/* =================================================================
   Universal Unit Converter - style.css
   Premium modern UI with dark mode support
   ================================================================= */

/* ─── Google Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* ─── CSS Custom Properties ─── */
:root {
    /* Brand */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-primary-glow: rgba(99,102,241,0.25);
    --color-secondary: #8b5cf6;
    --color-accent: #ec4899;

    /* Extended Palette */
    --color-ocean: #06b6d4;
    --color-forest: #10b981;
    --color-sunset: #f59e0b;
    --color-crimson: #ef4444;
    --color-rose: #f43f5e;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 40%, #6366f1 100%);
    --gradient-card: linear-gradient(145deg, rgba(99,102,241,0.06) 0%, rgba(139,92,246,0.03) 100%);
    --gradient-shimmer: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.08) 50%, transparent 100%);

    /* Semantic */
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-info: #06b6d4;

    /* Light Theme Surfaces */
    --bg-page: #f0f2ff;
    --bg-surface: #ffffff;
    --bg-surface-2: #f8faff;
    --bg-surface-3: #eef0ff;
    --bg-surface-4: #e8eaff;
    --bg-nav: rgba(255,255,255,0.88);
    --bg-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #6366f1 100%);

    --text-primary: #1a1f36;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    --text-on-primary: #ffffff;

    --border-color: rgba(99,102,241,0.12);
    --border-color-2: rgba(99,102,241,0.2);
    --border-radius-sm: 8px;
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-2xl: 32px;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 8px rgba(99,102,241,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(99,102,241,0.1), 0 2px 8px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 40px rgba(99,102,241,0.14), 0 4px 12px rgba(0,0,0,0.06);
    --shadow-xl: 0 24px 64px rgba(99,102,241,0.18), 0 8px 24px rgba(0,0,0,0.08);
    --shadow-primary: 0 8px 24px rgba(99,102,241,0.35);
    --shadow-glow: 0 0 0 3px rgba(99,102,241,0.2);
    --shadow-card: 0 2px 16px rgba(99,102,241,0.08), 0 1px 4px rgba(0,0,0,0.04);
    --shadow-card-hover: 0 16px 48px rgba(99,102,241,0.18), 0 4px 16px rgba(0,0,0,0.08);

    --nav-height: 68px;
    --mobile-nav-height: 64px;
    --transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.42s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.38s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-page: #0c0e1a;
    --bg-surface: #13152a;
    --bg-surface-2: #181b31;
    --bg-surface-3: #1e2140;
    --bg-surface-4: #252848;
    --bg-nav: rgba(13,15,26,0.96);
    --bg-hero: linear-gradient(135deg, #1a1d2e 0%, #252840 50%, #1e2235 100%);

    --text-primary: #eef0ff;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;

    --border-color: rgba(99,102,241,0.15);
    --border-color-2: rgba(99,102,241,0.25);

    --shadow-sm: 0 1px 8px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.2);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5), 0 4px 16px rgba(0,0,0,0.3);
    --shadow-card: 0 2px 20px rgba(0,0,0,0.4), 0 1px 4px rgba(0,0,0,0.2);
    --shadow-card-hover: 0 16px 48px rgba(0,0,0,0.6), 0 4px 16px rgba(99,102,241,0.15);
}

/* ─── Reset & Base ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── App Loading Screen ─── */
#app-loader {
    position: fixed;
    inset: 0;
    background: var(--color-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    gap: 20px;
    transition: opacity 0.2s ease;
}

#app-loader.fade-out { opacity: 0; pointer-events: none; }

.loader-logo {
    font-size: 3rem;
    color: white;
    animation: loader-pulse 1s ease-in-out infinite alternate;
}

.loader-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(255,255,255,0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

.loader-text { color: rgba(255,255,255,0.8); font-size: 0.9rem; letter-spacing: 0.05em; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes loader-pulse { to { transform: scale(1.1); } }

/* ─── Navbar ─── */
.uuc-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    height: var(--nav-height);
    transition: var(--transition);
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 20px;
    max-width: 1320px;
    margin: 0 auto;
    gap: 16px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: var(--color-primary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: var(--shadow-primary);
}

.brand-name {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    line-height: 1.1;
}

.brand-tagline {
    font-size: 0.65rem;
    color: var(--text-secondary);
    font-weight: 400;
    display: block;
}

.navbar-nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0 14px;
    height: 38px;
    border-radius: var(--border-radius-full);
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    background: none;
    border: none;
    white-space: nowrap;
    line-height: 1;
}

.nav-link-item i {
    font-size: 0.95rem;
}

.nav-link-item:hover {
    color: var(--color-primary);
    background: var(--bg-surface-3);
}

.nav-link-item.active {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.12);
    font-weight: 700;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle-btn, .icon-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.theme-toggle-btn:hover, .icon-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(99,102,241,0.08);
    transform: translateY(-1px);
}

/* ─── Mobile Bottom Nav ─── */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1029;
    background: var(--bg-nav);
    border-top: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
    height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
}

.mobile-nav-inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
}

.mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 0.68rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    min-width: 56px;
}

.mobile-nav-item i { font-size: 1.2rem; }

.mobile-nav-item.active {
    color: var(--color-primary);
}

.mobile-nav-item.active i {
    transform: translateY(-2px);
}

/* ─── Main Layout ─── */
.app-content {
    min-height: calc(100vh - var(--nav-height));
    padding-bottom: calc(var(--mobile-nav-height) + 20px);
}

@media (min-width: 768px) {
    .app-content { padding-bottom: 20px; }
}

/* ─── Toast Notifications ─── */
#toast-container {
    position: fixed;
    top: calc(var(--nav-height) + 12px);
    right: 16px;
    z-index: 9000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 320px;
}

.uuc-toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    font-size: 0.88rem;
    color: var(--text-primary);
    transform: translateX(120%);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    min-width: 240px;
}

.uuc-toast.show { transform: translateX(0); }

.uuc-toast i { font-size: 1.1rem; flex-shrink: 0; }

.uuc-toast span { flex: 1; font-weight: 500; }

.uuc-toast-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    font-size: 1rem;
    padding: 0;
    line-height: 1;
}

.uuc-toast-close:hover { color: var(--text-primary); }

/* ─── Hero Section ─── */
.hero-section {
    background: var(--bg-hero);
    position: relative;
    overflow: hidden;
    padding: 36px 0 24px;
}

.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
    animation: float 6s ease-in-out infinite;
}

.hero-shape-1 {
    width: 400px; height: 400px;
    background: white;
    top: -100px; right: -80px;
    animation-delay: 0s;
}

.hero-shape-2 {
    width: 250px; height: 250px;
    background: white;
    bottom: -80px; left: -60px;
    animation-delay: 2s;
}

.hero-shape-3 {
    width: 150px; height: 150px;
    background: rgba(255,255,255,0.5);
    top: 40%; left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-content { position: relative; z-index: 1; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--border-radius-full);
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 900;
    color: white;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.85);
    margin-bottom: 36px;
    line-height: 1.6;
}

.hero-search-wrapper { max-width: 540px; margin: 0 auto 28px; }

.hero-search-box {
    position: relative;
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: visible;
}

.hero-search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary);
    font-size: 1.1rem;
    pointer-events: none;
}

.hero-search-input {
    width: 100%;
    padding: 16px 20px 16px 50px;
    border: none;
    outline: none;
    font-size: 1rem;
    font-family: inherit;
    background: transparent;
    color: #1a1f36;
    border-radius: var(--border-radius-lg);
}

.hero-search-input::placeholder { color: #9ca3af; }

.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    border: 1px solid #e5e7eb;
    overflow: hidden;
    display: none;
    z-index: 100;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    width: 100%;
    border: none;
    background: white;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.search-result-item:hover { background: #f8faff; }

.search-result-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.search-result-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.search-result-text strong { font-size: 0.9rem; color: #1a1f36; }
.search-result-text small { font-size: 0.75rem; color: #6b7280; }
.search-result-text mark { background: #fef9c3; border-radius: 2px; padding: 0 2px; }

.search-result-arrow { color: #9ca3af; font-size: 0.8rem; }
.search-no-results { padding: 20px; text-align: center; color: #9ca3af; font-size: 0.9rem; }

.hero-quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

.quick-link-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    background: rgba(255,255,255,0.18);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--border-radius-full);
    color: white;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(8px);
}

.quick-link-chip:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* ─── Stats Bar ─── */
.stats-section { padding: 0; background: var(--bg-surface); border-bottom: 1px solid var(--border-color); }

.stats-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0;
    padding: 16px 20px;
    max-width: 1320px;
    margin: 0 auto;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4px 32px;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label { font-size: 0.75rem; color: var(--text-secondary); font-weight: 500; margin-top: 3px; }

.stat-divider { width: 1px; height: 36px; background: var(--border-color); }

/* ─── Sections ─── */
.section-wrapper { padding: 40px 0; }

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 6px;
}

.section-link {
    font-size: 0.88rem;
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
}

.section-link:hover { text-decoration: underline; }

/* ─── Category Grid ─── */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 14px;
}

/* ─── Category Card ─── */
.category-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(12px);
}

.category-card.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.4s ease, transform 0.4s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.category-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.category-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.category-card-body { flex: 1; min-width: 0; }

.category-card-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.category-card-meta { font-size: 0.75rem; color: var(--text-tertiary); margin: 2px 0 0; }

.category-card-arrow {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    flex-shrink: 0;
}

.fav-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
    flex-shrink: 0;
    padding: 0;
    color: var(--text-tertiary);
    font-size: 1rem;
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
    border-radius: 50%;
}

.fav-btn:hover { color: #f59e0b; transform: scale(1.2); }
.fav-btn.active { color: #f59e0b; }

/* ─── Features Section ─── */
.features-section {
    background: var(--bg-surface-2);
    padding: 28px 0;
    border-top: 1px solid var(--border-color);
}

.feature-card {
    padding: 18px 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    transition: var(--transition);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.feature-desc { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.5; margin: 0; }

/* ─── Converter Page ─── */
.converter-page { padding: 24px 0 40px; }

.converter-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.converter-breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.converter-breadcrumb a:hover { text-decoration: underline; }

.converter-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.converter-card-header {
    padding: 24px;
    background: linear-gradient(135deg, var(--cat-color, #6366f1) 0%, color-mix(in srgb, var(--cat-color, #6366f1) 70%, #000) 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.converter-header-left { display: flex; align-items: center; gap: 14px; }

.converter-category-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    background: rgba(255,255,255,0.2) !important;
    color: white !important;
}

.converter-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: white;
    margin: 0;
    line-height: 1.2;
}

.converter-subtitle {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.75);
    margin: 4px 0 0;
}

.converter-header-actions { display: flex; gap: 8px; }

.fav-btn-lg {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.85);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.fav-btn-lg:hover, .fav-btn-lg.active {
    color: #fbbf24;
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.5);
}

.icon-btn.fav-btn-lg { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.3); color: white; }

.converter-card-body { padding: 28px; }

.converter-group { margin-bottom: 8px; }

.converter-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.converter-input-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.converter-select {
    flex: 0 0 auto;
    min-width: 160px;
    max-width: 200px;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 16 16'%3E%3Cpath fill='%236b7280' d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.converter-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.converter-input {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 500;
    transition: var(--transition);
    min-width: 0;
}

.converter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    background: var(--bg-surface);
}

.converter-input::placeholder { color: var(--text-tertiary); font-size: 0.9rem; }

/* ─── Swap Button ─── */
.converter-swap-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}

.converter-swap-line {
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.converter-swap-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.converter-swap-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: rotate(180deg);
    box-shadow: var(--shadow-primary);
}

.converter-swap-btn.spinning { animation: spin-once 0.4s ease; }

@keyframes spin-once { to { transform: rotate(180deg); } }

/* ─── Result Display ─── */
.result-display {
    background: linear-gradient(135deg, rgba(99,102,241,0.06), rgba(139,92,246,0.06));
    border: 2px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    text-align: center;
    margin: 20px 0;
    animation: result-appear 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes result-appear {
    from { opacity: 0; transform: scale(0.95) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.result-equation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.eq-from, .eq-to {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

.eq-to { color: var(--color-primary); }

.eq-unit {
    font-size: 0.65em;
    font-weight: 500;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    margin-left: 2px;
}

.eq-equals {
    font-size: 1.8rem;
    color: var(--text-tertiary);
    font-weight: 300;
}

/* ─── Action Buttons ─── */
.converter-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 18px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background: var(--bg-surface-2);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    flex: 1;
    justify-content: center;
    min-width: 80px;
}

.action-btn:hover {
    background: var(--bg-surface-3);
    border-color: var(--border-color-2);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.action-btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.action-btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

.action-btn-danger:hover {
    background: rgba(239,68,68,0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* ─── Currency Notice ─── */
.currency-notice {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 16px;
    background: rgba(245,158,11,0.08);
    border: 1px solid rgba(245,158,11,0.2);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    color: #92400e;
    margin-top: 16px;
}

[data-theme="dark"] .currency-notice { color: #fcd34d; }
.currency-notice i { color: #f59e0b; flex-shrink: 0; margin-top: 1px; }

/* ─── Reference Card ─── */
.reference-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.reference-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.reference-card-header:hover { background: var(--bg-surface-2); }

.reference-title { font-size: 0.95rem; font-weight: 600; margin: 0; color: var(--text-primary); }

.ref-toggle-icon { color: var(--text-tertiary); transition: transform 0.3s ease; }

.reference-card-body { padding: 0 20px 20px; }

.ref-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.ref-table th {
    padding: 10px 12px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-bottom: 2px solid var(--border-color);
}

.ref-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.ref-table tbody tr:hover { background: var(--bg-surface-2); }

.ref-table tbody tr:last-child td { border-bottom: none; }

.ref-result { font-family: 'JetBrains Mono', monospace; font-weight: 500; color: var(--color-primary); }

code {
    background: var(--bg-surface-3);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.82rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--color-secondary);
}

/* ─── Sidebar ─── */
.sidebar-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.sidebar-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-card-title {
    font-size: 0.92rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.sidebar-clear-btn {
    background: none;
    border: none;
    color: var(--color-danger);
    font-size: 0.8rem;
    cursor: pointer;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.sidebar-clear-btn:hover { background: rgba(239,68,68,0.1); }

.sidebar-card-body { padding: 8px; max-height: 320px; overflow-y: auto; }

/* Custom scrollbar */
.sidebar-card-body::-webkit-scrollbar { width: 4px; }
.sidebar-card-body::-webkit-scrollbar-track { background: transparent; }
.sidebar-card-body::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

/* ─── History Items ─── */
.history-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 32px 16px;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    text-align: center;
}

.history-empty i { font-size: 1.5rem; }

.history-item {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 12px;
    border-radius: var(--border-radius-sm);
    border: none;
    background: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.history-item:hover { background: var(--bg-surface-2); }

.history-values {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--text-primary);
    flex: 1;
    min-width: 0;
    flex-wrap: wrap;
}

.history-from { color: var(--text-secondary); }
.history-to { color: var(--color-primary); font-weight: 600; }
.history-values i { color: var(--text-tertiary); font-size: 0.75rem; }
.history-time { font-size: 0.72rem; color: var(--text-tertiary); white-space: nowrap; flex-shrink: 0; }

/* ─── Other Converters List ─── */
.sidebar-other-list { padding: 8px; }

.other-converter-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--border-radius-sm);
    border: none;
    background: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.other-converter-item:hover { background: var(--bg-surface-2); }

.other-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.other-name { flex: 1; font-size: 0.88rem; font-weight: 500; color: var(--text-primary); }

.other-arrow { color: var(--text-tertiary); font-size: 0.8rem; }

/* ─── Page Header ─── */
.page-header { margin-bottom: 28px; }

.page-title {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.page-subtitle { font-size: 0.9rem; color: var(--text-secondary); margin: 0; }

/* ─── Empty State ─── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 36px 20px;
    gap: 12px;
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-tertiary);
    margin-bottom: 8px;
    opacity: 0.5;
}

.empty-state h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); margin: 0; }
.empty-state p { font-size: 0.9rem; color: var(--text-secondary); margin: 0 0 8px; max-width: 320px; }

/* ─── History Page ─── */
.history-page-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-page-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.history-page-item:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary-light); transform: translateX(4px); }

.history-page-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.history-page-content { flex: 1; min-width: 0; }
.history-page-category { font-size: 0.75rem; font-weight: 700; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }
.history-page-values { display: flex; align-items: center; gap: 8px; margin-top: 4px; flex-wrap: wrap; }

.hp-from { font-size: 1rem; font-weight: 600; color: var(--text-primary); font-family: 'JetBrains Mono', monospace; }
.hp-to { font-size: 1rem; font-weight: 700; color: var(--color-primary); font-family: 'JetBrains Mono', monospace; }
.hp-arrow { color: var(--text-tertiary); font-size: 0.9rem; }
.hp-from em, .hp-to em { font-style: normal; font-size: 0.75em; color: var(--text-secondary); margin-left: 2px; }

.history-page-meta { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; color: var(--text-tertiary); font-size: 0.8rem; flex-shrink: 0; }

/* ─── Search Page ─── */
.search-page-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 16px 20px;
    margin-bottom: 28px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.search-page-box:focus-within { border-color: var(--color-primary); box-shadow: var(--shadow-glow); }

.search-page-icon { font-size: 1.2rem; color: var(--text-tertiary); flex-shrink: 0; }

.search-page-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1.05rem;
    font-family: inherit;
    color: var(--text-primary);
}

.search-page-input::placeholder { color: var(--text-tertiary); }

/* ─── About Page ─── */
.about-hero { padding: 24px 0 16px; }

.about-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    margin: 0 auto 20px;
    box-shadow: var(--shadow-primary);
}

.about-card {
    padding: 28px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    height: 100%;
    box-shadow: var(--shadow-sm);
}

.about-card-icon {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.about-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; color: var(--text-primary); }
.about-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }

.about-list { list-style: none; padding: 0; margin: 12px 0 0; display: flex; flex-direction: column; gap: 8px; }
.about-list li { display: flex; align-items: center; gap: 8px; font-size: 0.88rem; color: var(--text-secondary); }

.supported-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

.supported-tag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: var(--border-radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid;
}

.shortcuts-list { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }

.shortcut-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    padding: 4px 8px;
    background: var(--bg-surface-3);
    border: 1px solid var(--border-color-2);
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: 0 2px 0 var(--border-color);
}

.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 12px; }

.tech-tag {
    padding: 6px 14px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius-full);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ─── Settings Page ─── */
.settings-list { display: flex; flex-direction: column; gap: 20px; }

.settings-group {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.settings-group-title {
    padding: 14px 20px 10px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface-2);
}

.settings-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.settings-item:last-child { border-bottom: none; }

.settings-item-info { display: flex; align-items: center; gap: 14px; }

.settings-item-icon { font-size: 1.2rem; color: var(--color-primary); width: 20px; text-align: center; }

.settings-item-label { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.settings-item-desc { font-size: 0.78rem; color: var(--text-secondary); margin-top: 2px; }

.settings-switch { cursor: pointer; width: 48px !important; height: 26px !important; }

.settings-select {
    padding: 7px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    cursor: pointer;
}

/* ─── QR Modal ─── */
.uuc-modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    color: var(--text-primary);
}

.uuc-modal .modal-header { border-color: var(--border-color); }
.uuc-modal .modal-footer { border-color: var(--border-color); }
.uuc-modal .btn-close { filter: var(--bs-btn-close-filter); }

.qr-container {
    display: flex;
    justify-content: center;
}

.qr-image {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 8px solid white;
}

.qr-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

/* ─── Footer ─── */
.uuc-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
    margin-top: 40px;
}

.footer-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 20px;
    list-style: none;
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
}

.footer-links a:hover { color: var(--color-primary); }

.footer-copy { font-size: 0.8rem; color: var(--text-tertiary); }

/* ─── Animations ─── */
.animate-fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fade-in-up 0.6s cubic-bezier(0.34, 1.2, 0.64, 1) forwards;
}

@keyframes fade-in-up {
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Bootstrap Overrides ─── */
.btn-primary { background-color: var(--color-primary); border-color: var(--color-primary); font-weight: 600; }
.btn-primary:hover { background-color: var(--color-primary-dark); border-color: var(--color-primary-dark); }

.form-check-input:checked { background-color: var(--color-primary); border-color: var(--color-primary); }

/* ─── Responsive ─── */
@media (max-width: 991.98px) {
    .navbar-nav-links { display: none; }
    .mobile-nav { display: block; }
}

@media (max-width: 767.98px) {
    .hero-section { padding: 50px 0 40px; }
    .hero-title { font-size: 2rem; }
    .stats-bar { gap: 0; }
    .stat-item { padding: 4px 16px; }
    .converter-input-row { flex-direction: column; }
    .converter-select { max-width: 100%; }
    .category-grid { grid-template-columns: 1fr 1fr; }
    .converter-actions { gap: 6px; }
    .action-btn { font-size: 0.78rem; padding: 8px 10px; }
    .converter-card-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 479.98px) {
    .category-grid { grid-template-columns: 1fr; }
    .stat-divider { display: none; }
    .stats-bar { flex-wrap: wrap; gap: 8px; }
}

/* ─── Print ─── */
@media print {
    .uuc-navbar, .mobile-nav, #toast-container, .converter-actions { display: none !important; }
    .converter-card { box-shadow: none; border: 1px solid #ccc; }
}

/* ─── Accessibility ─── */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* ─── Selection ─── */
::selection { background: rgba(99,102,241,0.2); color: var(--text-primary); }

/* ─── PWA / Safe Area ─── */
@supports (padding: max(0px)) {
    .mobile-nav { padding-bottom: max(6px, env(safe-area-inset-bottom)); }
}

/* ═══════════════════════════════════════════════════════════════════════
   CATEGORIES PAGE — Premium Edition
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Page Wrapper ─── */
.cat-page { min-height: 100vh; }

/* ─── Categories Hero ─── */
.cat-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4c1d95 70%, #5b21b6 100%);
    padding: 24px 0 20px;
}

[data-theme="dark"] .cat-hero {
    background: linear-gradient(135deg, #0f0e1a 0%, #1a1734 40%, #221640 70%, #281544 100%);
}

.cat-hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.cat-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
}

.cat-orb-1 { width: 500px; height: 500px; background: #818cf8; top: -200px; right: -100px; animation: float 8s ease-in-out infinite; }
.cat-orb-2 { width: 300px; height: 300px; background: #c084fc; bottom: -100px; left: -60px; animation: float 10s ease-in-out infinite reverse; }
.cat-orb-3 { width: 200px; height: 200px; background: #38bdf8; top: 30%; left: 40%; animation: float 6s ease-in-out infinite 2s; }

.cat-hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.cat-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--border-radius-full);
    color: rgba(255,255,255,0.9);
    font-size: 0.82rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
    margin-bottom: 12px;
}

.cat-hero-title {
    font-size: clamp(1.6rem, 4vw, 2.5rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 10px;
    letter-spacing: -0.025em;
}

.cat-hero-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,0.75);
    margin: 0;
}

.cat-hero-stats {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}

.cat-stat-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--border-radius);
    color: rgba(255,255,255,0.9);
    font-size: 0.88rem;
    backdrop-filter: blur(8px);
}

.cat-stat-pill i { font-size: 1rem; color: #fbbf24; }
.cat-stat-pill strong { font-weight: 800; font-size: 1rem; }

/* ─── Controls Bar ─── */
.cat-controls-bar {
    position: sticky;
    top: var(--nav-height);
    z-index: 100;
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 14px 0 0;
}

.cat-controls-inner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 14px;
    flex-wrap: wrap;
}

/* Search */
.cat-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 200px;
}

.cat-search-icon {
    position: absolute;
    left: 14px;
    color: var(--text-tertiary);
    font-size: 0.95rem;
    pointer-events: none;
}

.cat-search-input {
    width: 100%;
    padding: 10px 40px 10px 40px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition);
}

.cat-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.cat-search-clear {
    position: absolute;
    right: 12px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: none;
    background: var(--text-tertiary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    transition: var(--transition);
}

.cat-search-clear:hover { background: var(--color-danger); }

/* Sort */
.cat-sort-wrap { flex-shrink: 0; }

.cat-sort-select {
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    cursor: pointer;
    transition: var(--transition);
}

.cat-sort-select:focus { outline: none; border-color: var(--color-primary); }

/* View Toggle */
.cat-view-toggle {
    display: flex;
    gap: 2px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 3px;
    flex-shrink: 0;
}

.cat-view-btn {
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: var(--transition);
}

.cat-view-btn:hover { color: var(--color-primary); background: var(--bg-surface); }

.cat-view-btn.active {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

/* Filter Tabs & Scroll Navigation */
.cat-filter-nav-wrap {
    position: relative;
    display: flex !important;
    align-items: center !important;
    gap: 8px;
    width: 100%;
    margin-top: 14px;
}

.cat-filter-scroll-btn {
    width: 36px !important;
    height: 36px !important;
    border-radius: 50% !important;
    border: 1px solid var(--border-color) !important;
    background: var(--bg-surface) !important;
    color: var(--text-primary) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer;
    flex-shrink: 0 !important;
    font-size: 0.95rem !important;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    z-index: 5;
    padding: 0 !important;
}

.cat-filter-scroll-btn:hover {
    background: var(--color-primary) !important;
    color: white !important;
    border-color: var(--color-primary) !important;
    box-shadow: 0 4px 12px rgba(99,102,241,0.35) !important;
    transform: scale(1.1) !important;
}

.cat-filter-tabs {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 2px;
    -webkit-overflow-scrolling: touch;
}

.cat-filter-tabs::-webkit-scrollbar { display: none; }

.cat-filter-tab {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
    font-family: inherit;
    position: relative;
    bottom: -1px;
}

.cat-filter-tab i { font-size: 0.85rem; }

.cat-filter-tab:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(99,102,241,0.06);
}

.cat-filter-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    box-shadow: 0 2px 12px rgba(99,102,241,0.35);
}

.cat-filter-count {
    background: rgba(255,255,255,0.25);
    padding: 1px 7px;
    border-radius: var(--border-radius-full);
    font-size: 0.72rem;
    font-weight: 700;
}

.cat-filter-tab:not(.active) .cat-filter-count {
    background: var(--bg-surface-3);
    color: var(--text-secondary);
}

/* ——— Section Header ——— */
.cat-featured-section {
    padding: 18px 0 0;
}

.cat-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 8px;
}

.cat-section-title {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cat-section-title h2 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
}

.cat-section-title i { font-size: 1.1rem; }

.cat-section-sub { font-size: 0.85rem; color: var(--text-tertiary); margin: 0; }

.cat-result-count {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-tertiary);
    padding: 4px 12px;
    background: var(--bg-surface-3);
    border-radius: var(--border-radius-full);
}

/* ─── Featured Cards ─── */
.cat-featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
    margin-bottom: 40px;
}

.cat-featured-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 22px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    cursor: default;
    opacity: 0;
    transform: translateY(12px);
}

.cat-featured-card.visible {
    opacity: 1;
    transform: none;
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.cat-featured-card:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.12), 0 0 0 1px var(--cat-color, #6366f1)40;
    border-color: var(--cat-color, #6366f1);
    transform: translateY(-4px);
}

.cat-fc-glow {
    position: absolute;
    top: -30px;
    right: -30px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--cat-color, #6366f1) 0%, transparent 70%);
    opacity: 0.08;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.cat-featured-card:hover .cat-fc-glow { opacity: 0.18; }

.cat-fc-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 14px;
}

.cat-fc-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.cat-fc-fav {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-surface-2);
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
}

.cat-fc-fav:hover { color: #f59e0b; border-color: #f59e0b; }
.cat-fc-fav.active { color: #f59e0b; border-color: #f59e0b; background: rgba(245,158,11,0.1); }

.cat-fc-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 6px;
}

.cat-fc-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0 0 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cat-fc-units {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 16px;
}

.cat-unit-chip {
    padding: 3px 9px;
    background: var(--bg-surface-3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.cat-unit-more {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.cat-fc-footer {
    display: flex;
    gap: 8px;
}

.cat-fc-quick {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 14px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius);
    color: var(--color-primary);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    flex: 1;
    justify-content: center;
}

.cat-fc-quick:hover {
    background: var(--color-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}

.cat-fc-open {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    background: var(--cat-color, #6366f1);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.cat-fc-open:hover { opacity: 0.9; transform: translateX(2px); }

/* ─── Premium Grid Cards ─── */
.cat-premium-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
    padding-bottom: 40px;
}

.cat-grid-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transform: translateY(10px);
}

.cat-grid-card.visible {
    opacity: 1;
    transform: none;
    transition: opacity 0.4s ease, transform 0.4s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.cat-grid-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--cat-color, #6366f1);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.cat-grid-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--cat-color, #6366f1);
    transform: translateY(-3px);
}

.cat-grid-card:hover::before { opacity: 1; }

.cat-gc-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.cat-gc-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cat-gc-badges {
    flex: 1;
    display: flex;
    justify-content: flex-start;
    padding-left: 4px;
}

.cat-gc-fav {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.cat-gc-fav:hover { color: #f59e0b; transform: scale(1.2); }
.cat-gc-fav.active { color: #f59e0b; }

.cat-gc-body { flex: 1; }

.cat-gc-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 5px;
}

.cat-gc-desc {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0 0 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cat-gc-unit-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.cat-unit-pill {
    padding: 2px 8px;
    background: var(--bg-surface-3);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.cat-unit-pill-count {
    background: rgba(99,102,241,0.1);
    border-color: rgba(99,102,241,0.2);
    color: var(--color-primary);
}

.cat-gc-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.cat-gc-quick-btn {
    width: 34px;
    height: 34px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(99,102,241,0.2);
    background: rgba(99,102,241,0.08);
    color: var(--color-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.cat-gc-quick-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}

.cat-gc-open-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.cat-gc-open-btn:hover {
    background: var(--cat-color, #6366f1);
    border-color: var(--cat-color, #6366f1);
    color: white;
}

/* ─── Badges ─── */
.cat-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.cat-badge-popular { background: rgba(245,158,11,0.15); color: #d97706; border: 1px solid rgba(245,158,11,0.3); }
.cat-badge-new { background: rgba(16,185,129,0.15); color: #059669; border: 1px solid rgba(16,185,129,0.3); }

/* ─── Tags ─── */
.cat-tag {
    display: inline-flex;
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    font-size: 0.68rem;
    font-weight: 600;
    background: var(--bg-surface-3);
    color: var(--text-tertiary);
    border: 1px solid var(--border-color);
    text-transform: capitalize;
}

/* ─── List View ─── */
.cat-list-view {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding-bottom: 40px;
}

.cat-list-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    opacity: 0;
    transform: translateX(-8px);
}

.cat-list-item.visible {
    opacity: 1;
    transform: none;
    transition: opacity 0.4s ease, transform 0.4s ease, box-shadow 0.2s, border-color 0.2s;
}

.cat-list-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
    transform: translateX(4px);
}

.cat-li-left { display: flex; align-items: flex-start; gap: 14px; flex: 1; min-width: 0; }

.cat-li-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cat-li-info { flex: 1; min-width: 0; }

.cat-li-top {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.cat-li-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.cat-li-tags { display: flex; gap: 4px; flex-wrap: wrap; }

.cat-li-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin: 0 0 8px;
    line-height: 1.4;
}

.cat-li-units {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    align-items: center;
}

.cat-li-unit {
    padding: 2px 8px;
    background: var(--bg-surface-3);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 0.72rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-secondary);
}

.cat-li-unit-more {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 600;
}

.cat-li-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.cat-li-count {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.78rem;
    color: var(--text-tertiary);
    font-weight: 600;
    white-space: nowrap;
}

.cat-li-fav {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-surface-2);
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: var(--transition);
}

.cat-li-fav:hover { color: #f59e0b; border-color: #f59e0b; }
.cat-li-fav.active { color: #f59e0b; border-color: #f59e0b; background: rgba(245,158,11,0.08); }

.cat-li-quick {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius-sm);
    background: rgba(99,102,241,0.08);
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.cat-li-quick:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.cat-li-open {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 14px;
    border: none;
    border-radius: var(--border-radius-sm);
    background: var(--color-primary);
    color: white;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.cat-li-open:hover { background: var(--color-primary-dark); }

/* ─── Compact View ─── */
.cat-compact-view {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
    gap: 8px;
    padding-bottom: 40px;
}

.cat-compact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transform: scale(0.95);
}

.cat-compact-item.visible {
    opacity: 1;
    transform: none;
    transition: opacity 0.35s ease, transform 0.35s ease, box-shadow 0.2s, border-color 0.2s;
}

.cat-compact-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.cat-ci-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    position: relative;
}

.cat-compact-dot {
    position: absolute;
    top: -3px;
    right: -3px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 2px solid var(--bg-surface);
}

.cat-ci-body { flex: 1; min-width: 0; }

.cat-ci-name {
    font-size: 0.83rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cat-ci-count { font-size: 0.7rem; color: var(--text-tertiary); }

.cat-ci-arrow { font-size: 0.8rem; flex-shrink: 0; }

/* ─── Quick Convert Panel (Drawer) ─── */
.quick-convert-panel {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: stretch;
    justify-content: flex-end;
}

.qcp-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.quick-convert-panel.open .qcp-backdrop { opacity: 1; }

.qcp-drawer {
    position: relative;
    z-index: 1;
    width: 420px;
    max-width: 100vw;
    background: var(--bg-surface);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -8px 0 40px rgba(0,0,0,0.15);
}

.quick-convert-panel.open .qcp-drawer { transform: translateX(0); }

/* QCP Header */
.qcp-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface-2);
    position: sticky;
    top: 0;
    z-index: 1;
}

.qcp-title-area { display: flex; align-items: center; gap: 12px; }

.qcp-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
}

.qcp-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: var(--transition);
}

.qcp-close:hover { background: var(--color-danger); border-color: var(--color-danger); color: white; }

/* QCP Body */
.qcp-body { padding: 24px; flex: 1; }

.qcp-row {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 4px;
}

.qcp-select {
    padding: 12px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.qcp-select:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--shadow-glow); }

.qcp-input {
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
}

.qcp-input:focus { outline: none; border-color: var(--color-primary); box-shadow: var(--shadow-glow); }

.qcp-result {
    padding: 14px 16px;
    background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.08));
    border: 2px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-primary);
    min-height: 52px;
    display: flex;
    align-items: center;
    letter-spacing: -0.02em;
}

.qcp-swap-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}

.qcp-line { flex: 1; height: 1px; background: var(--border-color); }

.qcp-swap {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.qcp-swap:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    transform: rotate(180deg);
}

/* QCP Equation */
.qcp-equation {
    text-align: center;
    padding: 12px;
    background: var(--bg-surface-2);
    border-radius: var(--border-radius);
    margin: 16px 0;
    font-size: 0.9rem;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.qcp-eq-from { color: var(--text-secondary); font-family: 'JetBrains Mono', monospace; font-weight: 600; }
.qcp-eq-sign { color: var(--text-tertiary); font-size: 1.1rem; }
.qcp-eq-to { color: var(--color-primary); font-family: 'JetBrains Mono', monospace; font-weight: 800; font-size: 1rem; }

/* QCP Actions */
.qcp-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.qcp-action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 11px 16px;
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.qcp-copy {
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.qcp-copy:hover { background: var(--bg-surface-3); color: var(--text-primary); }

.qcp-open {
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    color: white;
}

.qcp-open:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-primary); }

/* QCP Table */
.qcp-table-section {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.qcp-table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-surface-2);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
    user-select: none;
}

.qcp-table-header:hover { background: var(--bg-surface-3); color: var(--text-primary); }

.qcp-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.qcp-table td {
    padding: 9px 14px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.qcp-table tbody tr:last-child td { border-bottom: none; }
.qcp-table tbody tr:hover { background: var(--bg-surface-2); }

.qcp-table-active td { background: rgba(99,102,241,0.06) !important; }
.qcp-table-active td:first-child { font-weight: 700; color: var(--color-primary); }

.qcp-table-val {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    color: var(--color-primary);
}

/* Results area padding */
.cat-results-area { padding-top: 8px; }

/* Container spacing for the categories page */
.cat-page .container { padding-top: 28px; padding-bottom: 0; }
.cat-featured-section .container { padding-top: 0; }

/* ─── Responsive ─── */
@media (max-width: 991.98px) {
    .cat-hero-stats { flex-direction: row; flex-wrap: wrap; }
    .cat-stat-pill { flex: 1; min-width: 120px; }
    .qcp-drawer { width: 380px; }
}

@media (max-width: 767.98px) {
    .cat-hero { padding: 32px 0 24px; }
    .cat-hero-inner { flex-direction: column; }
    .cat-hero-stats { flex-direction: row; width: 100%; }
    .cat-stat-pill { flex: 1; justify-content: center; padding: 8px 10px; }
    .cat-controls-inner { flex-wrap: wrap; }
    .cat-search-wrap { flex: 1 0 100%; order: -1; }
    .cat-featured-grid { grid-template-columns: 1fr 1fr; }
    .cat-premium-grid { grid-template-columns: 1fr 1fr; }
    .cat-list-item { flex-wrap: wrap; }
    .cat-li-right { width: 100%; justify-content: flex-end; padding-top: 8px; border-top: 1px solid var(--border-color); }
    .qcp-drawer { width: 100%; }
    .cat-hero-title { font-size: 1.6rem; }
}

@media (max-width: 479.98px) {
    .cat-featured-grid { grid-template-columns: 1fr; }
    .cat-premium-grid { grid-template-columns: 1fr; }
    .cat-compact-view { grid-template-columns: 1fr 1fr; }
}

/* ═══════════════════════════════════════════════════════════════════════
   MINI METER CALCULATOR PAGE — Premium Edition
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Page ─── */
.mm-page { min-height: 100vh; }

/* ─── Hero ─── */
.mm-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #064e3b 0%, #065f46 40%, #047857 70%, #059669 100%);
    padding: 52px 0 40px;
}

[data-theme="dark"] .mm-hero {
    background: linear-gradient(135deg, #022c22 0%, #04352b 40%, #044035 70%, #065040 100%);
}

.mm-hero-bg { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }

.mm-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.25;
}

.mm-orb-1 { width: 600px; height: 600px; background: #34d399; top: -250px; right: -150px; animation: float 9s ease-in-out infinite; }
.mm-orb-2 { width: 300px; height: 300px; background: #6ee7b7; bottom: -120px; left: -60px; animation: float 11s ease-in-out infinite reverse; }

.mm-hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    flex-wrap: wrap;
}

.mm-hero-left { flex: 1; min-width: 260px; }

.mm-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 18px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--border-radius-full);
    color: rgba(255,255,255,0.95);
    font-size: 0.82rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
    margin-bottom: 14px;
}

.mm-hero-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 900;
    color: #fff;
    line-height: 1.08;
    margin-bottom: 12px;
    letter-spacing: -0.025em;
}

.mm-hero-sub {
    font-size: 1rem;
    color: rgba(255,255,255,0.78);
    margin: 0 0 18px;
    max-width: 520px;
    line-height: 1.55;
}

.mm-hero-features { display: flex; flex-wrap: wrap; gap: 8px; }

.mm-hf-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 13px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: var(--border-radius-full);
    color: rgba(255,255,255,0.9);
    font-size: 0.78rem;
    font-weight: 600;
}

.mm-hf-chip i { color: #6ee7b7; font-size: 0.82rem; }

/* Hero stats */
.mm-hero-right {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
}

.mm-hero-stat-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    min-width: 220px;
}

.mm-hs-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius);
    background: rgba(255,255,255,0.15);
    color: #6ee7b7;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.mm-hs-label { font-size: 0.75rem; color: rgba(255,255,255,0.65); font-weight: 500; margin-bottom: 3px; }
.mm-hs-value { font-size: 1.05rem; font-weight: 800; color: #fff; letter-spacing: -0.01em; }

/* ─── Main layout ─── */
.mm-main { padding-top: 32px; padding-bottom: 60px; }

.mm-layout {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 28px;
    align-items: start;
}

.mm-form-col { display: flex; flex-direction: column; gap: 16px; }

/* Sticky result column */
.mm-result-col { }
.mm-result-sticky { position: sticky; top: calc(var(--nav-height) + 20px); display: flex; flex-direction: column; gap: 16px; }

/* ─── Tip bar ─── */
.mm-tip-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(99,102,241,0.08);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius);
    font-size: 0.84rem;
    color: var(--text-secondary);
}

.mm-tip-bar i { color: var(--color-primary); flex-shrink: 0; }
.mm-tip-bar span { flex: 1; }
.mm-tip-close { background: none; border: none; color: var(--text-tertiary); cursor: pointer; padding: 0 4px; font-size: 1.1rem; line-height: 1; flex-shrink: 0; }
.mm-tip-close:hover { color: var(--color-danger); }

/* ─── Cards ─── */
.mm-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease;
}

.mm-card:focus-within { box-shadow: var(--shadow-md); }

.mm-card-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.mm-card-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, #059669, #047857);
    color: white;
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    flex-shrink: 0;
}

.mm-badge-optional { background: linear-gradient(135deg, #6366f1, #8b5cf6); }

.mm-card-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 4px;
}

.mm-card-sub { font-size: 0.82rem; color: var(--text-secondary); margin: 0; }

.mm-optional-tag {
    margin-left: auto;
    padding: 3px 10px;
    background: rgba(16,185,129,0.12);
    border: 1px solid rgba(16,185,129,0.25);
    border-radius: var(--border-radius-full);
    font-size: 0.68rem;
    font-weight: 800;
    color: #059669;
    letter-spacing: 0.04em;
    flex-shrink: 0;
}

/* ─── Fields ─── */
.mm-field-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.mm-field { display: flex; flex-direction: column; gap: 7px; }

.mm-label {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Inputs */
.mm-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.mm-input {
    flex: 1;
    padding: 12px 56px 12px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
}

.mm-input:focus {
    outline: none;
    border-color: #059669;
    box-shadow: 0 0 0 3px rgba(5,150,105,0.12);
}

.mm-input::placeholder { color: var(--text-tertiary); font-weight: 400; }

.mm-input-unit {
    position: absolute;
    right: 14px;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-tertiary);
    pointer-events: none;
    background: var(--bg-surface-2);
    padding: 2px 0;
}

/* Full-width input override */
.mm-field > .mm-input {
    padding: 12px 14px;
}

/* Selects */
.mm-select-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.mm-select {
    width: 100%;
    padding: 12px 40px 12px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    transition: var(--transition);
}

.mm-select:focus { outline: none; border-color: #059669; box-shadow: 0 0 0 3px rgba(5,150,105,0.12); }
.mm-select-arrow { position: absolute; right: 13px; font-size: 0.78rem; color: var(--text-tertiary); pointer-events: none; }

/* Tooltip */
.mm-tooltip-btn {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    transition: color 0.2s;
}

.mm-tooltip-btn:hover { color: var(--color-primary); }

.mm-tooltip-popup {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-nav);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 10px 14px;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.5;
    box-shadow: var(--shadow-lg);
    z-index: 500;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.mm-tooltip-popup.visible { opacity: 1; transform: none; }

/* Live price per unit inline indicator */
.mm-ppu-display {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    padding: 10px 16px;
    background: rgba(5,150,105,0.08);
    border: 1px solid rgba(5,150,105,0.2);
    border-radius: var(--border-radius);
    font-size: 0.88rem;
    color: #047857;
    font-weight: 500;
    animation: var(--animation-fade-in);
}

[data-theme="dark"] .mm-ppu-display { color: #34d399; background: rgba(52,211,153,0.08); border-color: rgba(52,211,153,0.2); }
.mm-ppu-display i { font-size: 1rem; }
.mm-ppu-display strong { font-weight: 800; }

/* ─── Mode toggle ─── */
.mm-mode-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.mm-mode-info { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 180px; }

.mm-mode-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    background: rgba(5,150,105,0.1);
    color: #059669;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.mm-mode-title { font-size: 0.88rem; font-weight: 700; color: var(--text-primary); margin-bottom: 2px; }
.mm-mode-sub { font-size: 0.76rem; color: var(--text-tertiary); }

.mm-mode-toggle {
    display: flex;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 3px;
    gap: 3px;
    flex-shrink: 0;
}

.mm-mode-btn {
    padding: 8px 16px;
    border: none;
    border-radius: 7px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.mm-mode-btn:hover { color: #059669; }

.mm-mode-btn.active {
    background: #059669;
    color: white;
    box-shadow: 0 2px 8px rgba(5,150,105,0.3);
}

/* Readings calculated result */
.mm-readings-result {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 10px 14px;
    background: rgba(5,150,105,0.08);
    border: 1px solid rgba(5,150,105,0.2);
    border-radius: var(--border-radius);
    font-size: 0.86rem;
    color: #047857;
    animation: var(--animation-fade-in);
}

[data-theme="dark"] .mm-readings-result { color: #34d399; }
.mm-readings-result i { color: #059669; font-size: 1rem; }

/* ─── Usage bar ─── */
.mm-usage-bar {
    margin-top: 18px;
    padding: 16px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    animation: var(--animation-fade-in);
}

.mm-ub-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.mm-ub-track {
    height: 10px;
    background: var(--bg-surface-3);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    display: flex;
    margin-bottom: 12px;
}

.mm-ub-fill {
    height: 100%;
    background: linear-gradient(90deg, #059669, #10b981);
    border-radius: var(--border-radius-full);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.mm-ub-legend {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 0.77rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.mm-ub-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.mm-ub-dot-primary { background: #059669; }
.mm-ub-dot-secondary { background: var(--bg-surface-3); border: 2px solid var(--border-color); }

/* ─── Multi sub-meter ─── */
.mm-add-meter-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(99,102,241,0.1);
    border: 1px solid rgba(99,102,241,0.2);
    border-radius: var(--border-radius);
    color: var(--color-primary);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
    flex-shrink: 0;
}

.mm-add-meter-btn:hover { background: var(--color-primary); color: white; box-shadow: 0 4px 14px rgba(99,102,241,0.3); }

.mm-multi-tip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--bg-surface-2);
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.mm-extra-meter {
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 14px;
    margin-bottom: 10px;
    animation: var(--animation-fade-in);
}

.mm-em-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.mm-em-icon {
    width: 30px;
    height: 30px;
    border-radius: var(--border-radius-sm);
    background: rgba(99,102,241,0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.mm-em-name {
    flex: 1;
    padding: 7px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
}

.mm-em-name:focus { outline: none; border-color: var(--color-primary); }

.mm-em-remove {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    padding: 0;
    transition: color 0.2s;
}

.mm-em-remove:hover { color: var(--color-danger); }

/* ─── Action buttons ─── */
.mm-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.mm-calc-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 28px;
    background: linear-gradient(135deg, #059669, #047857);
    border: none;
    border-radius: var(--border-radius-lg);
    color: white;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(5,150,105,0.3);
    letter-spacing: 0.01em;
}

.mm-calc-btn:hover {
    background: linear-gradient(135deg, #047857, #065f46);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(5,150,105,0.4);
}

.mm-calc-btn:active { transform: translateY(0); }

.mm-reset-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.mm-reset-btn:hover { border-color: var(--color-danger); color: var(--color-danger); }

.mm-privacy-note {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.77rem;
    color: var(--text-tertiary);
    margin: 4px 0 0;
}

.mm-privacy-note i { color: #059669; }

/* ─── Result Placeholder ─── */
.mm-result-placeholder {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.mm-rp-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(5,150,105,0.1);
    color: #059669;
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.mm-rp-title { font-size: 1.1rem; font-weight: 800; color: var(--text-primary); margin: 0 0 6px; }
.mm-rp-sub { font-size: 0.85rem; color: var(--text-secondary); margin: 0 0 20px; }

.mm-rp-formula {
    text-align: left;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mm-formula-row { display: flex; flex-direction: column; gap: 4px; }
.mm-formula-label { font-size: 0.68rem; font-weight: 800; letter-spacing: 0.06em; color: var(--text-tertiary); text-transform: uppercase; }

.mm-rp-formula code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    color: #059669;
    background: rgba(5,150,105,0.08);
    padding: 3px 8px;
    border-radius: 5px;
    display: block;
}

[data-theme="dark"] .mm-rp-formula code { color: #34d399; }

/* ─── Receipt ─── */
.mm-receipt {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    animation: var(--animation-fade-in);
}

.mm-receipt-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 20px 22px 16px;
    border-bottom: 1px dashed var(--border-color);
}

.mm-receipt-brand { display: flex; align-items: center; gap: 12px; }

.mm-receipt-logo {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius);
    background: linear-gradient(135deg, #059669, #047857);
    color: white;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.mm-receipt-brand-name {
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    color: #059669;
    text-transform: uppercase;
}

.mm-receipt-doc-title { font-size: 1.1rem; font-weight: 800; color: var(--text-primary); }

.mm-receipt-meta { text-align: right; }
.mm-receipt-date { font-size: 0.8rem; color: var(--text-secondary); display: flex; align-items: center; gap: 5px; justify-content: flex-end; margin-bottom: 3px; }
.mm-receipt-id { font-size: 0.75rem; color: var(--text-tertiary); font-family: 'JetBrains Mono', monospace; }

.mm-receipt-billing-label {
    padding: 8px 22px;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    background: var(--bg-surface-2);
    border-bottom: 1px solid var(--border-color);
}

.mm-receipt-rows { padding: 16px 22px 4px; }

.mm-receipt-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.mm-receipt-row:last-child { border-bottom: none; }
.mm-receipt-row span:last-child { font-family: 'JetBrains Mono', monospace; text-align: right; white-space: nowrap; }

.mm-rr-period { color: var(--text-tertiary); font-size: 0.8rem; }

.mm-rr-highlight {
    background: rgba(5,150,105,0.05);
    margin: 0 -4px;
    padding: 8px 4px;
    border-radius: 6px;
    font-weight: 600;
    color: var(--text-primary);
}

.mm-rr-highlight span:last-child { color: #059669; }
[data-theme="dark"] .mm-rr-highlight span:last-child { color: #34d399; }

.mm-receipt-divider {
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--border-color) 0, var(--border-color) 6px, transparent 6px, transparent 12px);
    margin: 4px 0;
}

.mm-receipt-total {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    background: linear-gradient(135deg, #059669, #047857);
    margin-top: 4px;
}

.mm-rt-label { font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; color: rgba(255,255,255,0.8); text-transform: uppercase; }
.mm-rt-amount { font-size: 1.5rem; font-weight: 900; color: #fff; font-family: 'JetBrains Mono', monospace; letter-spacing: -0.02em; }

.mm-receipt-disclaimer {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 10px 22px;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    border-top: 1px solid var(--border-color);
}

.mm-receipt-footer-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border-color);
}

.mm-rf-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 12px 8px;
    background: none;
    border: none;
    border-right: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.76rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.mm-rf-btn:last-child { border-right: none; }
.mm-rf-btn:hover { background: var(--bg-surface-2); color: #059669; }
.mm-rf-btn i { font-size: 0.88rem; }

/* ─── History card ─── */
.mm-history-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.mm-history-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface-2);
}

.mm-history-title { font-size: 0.9rem; font-weight: 800; color: var(--text-primary); margin: 0; display: flex; align-items: center; gap: 7px; }
.mm-history-clear { background: none; border: none; font-size: 0.78rem; color: var(--color-danger); cursor: pointer; font-family: inherit; font-weight: 600; padding: 3px 8px; border-radius: 5px; transition: background 0.2s; }
.mm-history-clear:hover { background: rgba(239,68,68,0.08); }

.mm-history-list { max-height: 320px; overflow-y: auto; }

.mm-history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 18px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background 0.15s ease;
}

.mm-history-item:last-child { border-bottom: none; }
.mm-history-item:hover { background: var(--bg-surface-2); }

.mm-hi-left { display: flex; align-items: center; gap: 12px; flex: 1; }

.mm-hi-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--border-radius-sm);
    background: rgba(5,150,105,0.1);
    color: #059669;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.mm-hi-period { font-size: 0.82rem; font-weight: 700; color: var(--text-primary); margin-bottom: 2px; }
.mm-hi-detail { font-size: 0.78rem; color: var(--text-secondary); font-family: 'JetBrains Mono', monospace; }
.mm-hi-detail strong { color: #059669; }
.mm-hi-arrow { color: var(--text-tertiary); font-size: 0.8rem; }

/* ─── Print styles ─── */
@media print {
    .mm-hero, .mm-form-col, .mm-tip-bar, .mm-result-placeholder,
    .mm-receipt-footer-actions, .mm-history-card,
    .uuc-navbar, .mobile-nav, .app-footer { display: none !important; }
    .mm-layout { grid-template-columns: 1fr; }
    .mm-result-col { width: 100%; }
    .mm-result-sticky { position: static; }
    .mm-receipt { box-shadow: none; border: 1px solid #ccc; }
    .mm-receipt-total { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* ─── Responsive ─── */
@media (max-width: 1199.98px) {
    .mm-layout { grid-template-columns: 1fr 380px; }
}

@media (max-width: 991.98px) {
    .mm-layout { grid-template-columns: 1fr; }
    .mm-result-sticky { position: static; }
    .mm-hero-right { flex-direction: row; flex-wrap: wrap; width: 100%; }
    .mm-hero-stat-card { flex: 1; min-width: 160px; }
}

@media (max-width: 767.98px) {
    .mm-hero { padding: 36px 0 28px; }
    .mm-hero-inner { flex-direction: column; }
    .mm-field-grid { grid-template-columns: 1fr; }
    .mm-mode-card { flex-direction: column; align-items: flex-start; }
    .mm-actions { flex-direction: column; }
    .mm-calc-btn, .mm-reset-btn { width: 100%; justify-content: center; }
    .mm-receipt-footer-actions { grid-template-columns: 1fr 1fr; }
    .mm-rf-btn:nth-child(2) { border-right: none; }
    .mm-rf-btn:nth-child(3) { border-right: 1px solid var(--border-color); }
    .mm-rf-btn:nth-child(3), .mm-rf-btn:nth-child(4) { border-top: 1px solid var(--border-color); }
}

@media (max-width: 479.98px) {
    .mm-hero-stat-card { min-width: 100%; }
}

/* ═══════════════════════════════════════════════════════════════════════
   PREMIUM LIVE COMPARE GRID & KEYBOARD SHORTCUTS DIALOG
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Keyboard Shortcuts Dialog ─── */
.shortcuts-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.shortcuts-modal-overlay.visible { opacity: 1; }

.shortcuts-modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    width: 450px;
    max-width: 90vw;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.shortcuts-modal-overlay.visible .shortcuts-modal-card { transform: scale(1); }

.smc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: var(--bg-surface-2);
    border-bottom: 1px solid var(--border-color);
}

.smc-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.smc-title i { color: var(--color-primary); }

.smc-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.smc-close:hover { color: var(--color-danger); }

.smc-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.smc-row {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.smc-row kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-surface-3);
    border: 1px solid var(--border-color);
    border-bottom-width: 3px;
    border-radius: 6px;
    box-shadow: var(--shadow-sm);
}

.smc-row span { font-weight: 500; }

.smc-footer {
    padding: 12px 24px;
    background: var(--bg-surface-2);
    border-top: 1px solid var(--border-color);
    font-size: 0.76rem;
    color: var(--text-tertiary);
    text-align: center;
}

/* ─── Compare Search Filter ─── */
.compare-filter-row {
    display: flex;
    width: 100%;
}

.compare-search-wrap {
    position: relative;
    display: flex;
    align-items: center;
    flex: 1;
}

.search-grid-icon {
    position: absolute;
    left: 14px;
    color: var(--text-tertiary);
    font-size: 0.9rem;
    pointer-events: none;
}

.compare-search-input {
    width: 100%;
    padding: 10px 14px 10px 38px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-surface-2);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.88rem;
    transition: var(--transition);
}

.compare-search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

/* ─── Compare Cards Grid ─── */
.compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
    max-height: 480px;
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-width: thin;
}

.compare-card {
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.compare-card:hover {
    background: var(--bg-surface);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.compare-card.active {
    background: var(--bg-surface);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary);
}

.compare-card.active::after {
    content: 'Active';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--color-primary);
    color: white;
    font-size: 0.6rem;
    font-weight: 800;
    padding: 2px 8px;
    border-bottom-left-radius: var(--border-radius-sm);
    text-transform: uppercase;
}

.cc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
}

.cc-name {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cc-symbol {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 700;
    background: var(--bg-surface-3);
    color: var(--text-tertiary);
    padding: 1px 6px;
    border-radius: var(--border-radius-sm);
}

.cc-result {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
    word-break: break-all;
    line-height: 1.2;
}

.compare-card.active .cc-result { color: var(--color-primary); }

.cc-actions {
    display: flex;
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
    margin-top: auto;
}

.cc-copy-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 0.74rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0;
    transition: color 0.15s;
    font-family: inherit;
}

.cc-copy-btn:hover { color: var(--color-primary); }

.compare-empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 30px 20px;
    color: var(--text-tertiary);
}

.compare-empty-state i { font-size: 1.5rem; margin-bottom: 8px; display: block; }
.compare-empty-state p { font-size: 0.85rem; margin: 0; }

/* ─── Accent Color Palette Settings ─── */
.accent-palette-grid {
    display: flex;
    gap: 12px;
    margin-top: 4px;
}

.accent-color-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    padding: 0;
}

.accent-color-btn:hover {
    transform: scale(1.15);
}

.accent-color-btn.active {
    border-color: var(--text-primary);
    transform: scale(1.1);
}

.accent-color-btn.active::before {
    content: '\F270'; /* Bootstrap check icon code */
    font-family: 'bootstrap-icons';
    color: white;
    font-size: 0.85rem;
    font-weight: 800;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* ─── Quick Calculator Drawer Widget ─── */
.calc-widget-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.calc-widget-overlay.visible { opacity: 1; }

.calc-widget-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    width: 330px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.calc-widget-overlay.visible .calc-widget-card { transform: translateY(0); }

.cwc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--bg-surface-2);
    border-bottom: 1px solid var(--border-color);
}

.cwc-title {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cwc-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-tertiary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.cwc-close:hover { color: var(--color-danger); }

.cwc-display {
    background: #0f172a;
    color: #38bdf8;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.7rem;
    font-weight: 700;
    padding: 20px;
    text-align: right;
    word-break: break-all;
    min-height: 78px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.cwc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-color);
    padding: 1px;
}

.cwc-btn {
    border: none;
    background: var(--bg-surface);
    height: 56px;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.1s ease;
}

.cwc-btn:hover { background: var(--bg-surface-3); }
.cwc-btn:active { background: var(--bg-surface-2); }

.cwc-btn-op {
    background: var(--bg-surface-2);
    color: var(--color-primary);
}

.cwc-btn-clear {
    color: var(--color-danger);
    background: var(--bg-surface-2);
}

.cwc-btn-back {
    color: var(--text-secondary);
    background: var(--bg-surface-2);
}

.cwc-btn-eq {
    background: var(--color-primary);
    color: white;
}
.cwc-btn-eq:hover { background: var(--color-primary-light); }

/* ─── SVG Activity Bar Chart ─── */
.chart-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.chart-canvas-wrap {
    width: 100%;
    overflow: hidden;
}

.chart-bg-bar {
    opacity: 0.45;
}

.chart-fill-bar {
    transition: width 0.8s ease-out;
}

.chart-stats-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding-left: 20px;
    border-left: 1px solid var(--border-color);
}

@media (max-width: 767.98px) {
    .chart-stats-info {
        padding-left: 0;
        border-left: none;
        border-top: 1px solid var(--border-color);
        padding-top: 20px;
        flex-direction: row;
        justify-content: space-around;
    }
}

.cs-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.cs-val {
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
}

.cs-lbl {
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-tertiary);
    letter-spacing: 0.05em;
}

.chart-empty-card {
    background: var(--bg-surface);
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 40px 20px;
    text-align: center;
    color: var(--text-tertiary);
}

.chart-empty-card i {
    font-size: 2.2rem;
    margin-bottom: 12px;
    display: block;
    color: var(--text-tertiary);
    opacity: 0.7;
}

.chart-empty-card p {
    font-size: 0.88rem;
    margin: 0;
}


/* ═══════════════════════════════════════════════════════════════════════
   MOBILE APP EXPERIENCE — Full Native-App Feel
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Mobile App Mode: Hide desktop navbar, use only bottom tab bar ─── */
@media (max-width: 991.98px) {

    /* Hide top desktop navbar entirely on mobile */
    .uuc-navbar {
        display: none !important;
    }

    /* App content: account for bottom nav */
    .app-content {
        padding-top: 0;
        padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom, 0px) + 20px);
    }
}

/* ─── Premium Bottom Tab Bar ─── */
@media (max-width: 991.98px) {
    .mobile-nav {
        display: flex !important;
        flex-direction: column;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1029;
        background: var(--bg-nav);
        border-top: 1px solid var(--border-color);
        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);
        padding-bottom: env(safe-area-inset-bottom, 0px);
        box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
    }

    .mobile-nav-inner {
        display: flex;
        justify-content: space-around;
        align-items: center;
        height: var(--mobile-nav-height);
        padding: 0 4px;
    }

    .mobile-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3px;
        flex: 1;
        height: 56px;
        border-radius: 12px;
        background: none;
        border: none;
        color: var(--text-tertiary);
        font-size: 0.65rem;
        font-weight: 500;
        cursor: pointer;
        transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
        text-decoration: none;
        position: relative;
        overflow: hidden;
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
        user-select: none;
        -webkit-user-select: none;
        letter-spacing: 0.01em;
    }

    .mobile-nav-item i {
        font-size: 1.35rem;
        transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
        display: block;
    }

    .mobile-nav-item span {
        font-size: 0.62rem;
        transition: all 0.15s ease;
        line-height: 1;
    }

    .mobile-nav-item:active {
        transform: scale(0.88);
    }

    .mobile-nav-item.active {
        color: var(--color-primary);
    }

    .mobile-nav-item.active i {
        transform: translateY(-2px) scale(1.12);
        filter: drop-shadow(0 2px 8px rgba(99,102,241,0.4));
    }

    .mobile-nav-item.active span {
        font-weight: 700;
    }

    /* Active tab pill indicator at top of tab */
    .mobile-nav-item.active::before {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 28px;
        height: 3px;
        background: var(--color-primary);
        border-radius: 0 0 3px 3px;
    }
}

/* ─── Mobile App Top Mini Header ─── */
.mobile-app-header {
    display: none;
}

@media (max-width: 991.98px) {
    .mobile-app-header {
        display: block;
        position: sticky;
        top: 0;
        z-index: 1028;
        background: var(--bg-nav);
        border-bottom: 1px solid var(--border-color);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }

    .mobile-header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        height: 56px;
        padding: 0 12px;
        gap: 8px;
    }

    .mobile-header-brand {
        display: flex;
        align-items: center;
        gap: 9px;
        text-decoration: none;
        flex: 1;
        min-width: 0;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    .mobile-header-brand .brand-icon {
        width: 34px;
        height: 34px;
        border-radius: 9px;
        font-size: 1rem;
        flex-shrink: 0;
    }

    .mobile-header-title {
        font-size: 1.05rem;
        font-weight: 700;
        color: var(--text-primary);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        line-height: 1.2;
    }

    .mobile-header-sub {
        font-size: 0.65rem;
        color: var(--text-tertiary);
        font-weight: 400;
        display: block;
        line-height: 1;
    }

    .mobile-header-actions {
        display: flex;
        align-items: center;
        gap: 4px;
        flex-shrink: 0;
    }

    .mobile-header-btn {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        border: none;
        background: var(--bg-surface-3);
        color: var(--text-secondary);
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1rem;
        transition: var(--transition);
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }

    .mobile-header-btn:active {
        transform: scale(0.90);
        background: rgba(99,102,241,0.15);
        color: var(--color-primary);
    }
}

/* ─── Touch Interaction Feedback ─── */
@media (max-width: 991.98px) {
    a, button, [role="button"] {
        -webkit-tap-highlight-color: transparent;
    }

    .category-card {
        cursor: pointer;
        transition: transform 0.15s ease, box-shadow 0.15s ease;
        touch-action: manipulation;
        -webkit-user-select: none;
        user-select: none;
    }

    .category-card:active {
        transform: scale(0.97);
    }

    .action-btn {
        touch-action: manipulation;
        min-height: 44px;
        -webkit-tap-highlight-color: transparent;
    }

    .action-btn:active {
        transform: scale(0.95);
    }

    .btn {
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .quick-link-chip {
        min-height: 44px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
    }

    .quick-link-chip:active {
        transform: scale(0.95);
    }

    /* iOS zoom prevention — all inputs must be 16px */
    select, .form-select, .converter-select {
        font-size: 16px !important;
        min-height: 48px;
    }

    input[type="text"],
    input[type="number"],
    input[type="search"],
    input[type="email"],
    textarea,
    .converter-input,
    .hero-search-input,
    .compare-search-input,
    .mm-input {
        font-size: 16px !important;
        min-height: 48px;
    }

    .converter-input {
        font-size: 1.25rem !important;
        padding: 14px 16px !important;
    }

    .history-item {
        min-height: 56px;
        padding: 14px 16px !important;
        touch-action: manipulation;
    }

    .history-item:active {
        background: var(--bg-surface-3) !important;
    }

    .search-result-item {
        min-height: 52px;
        padding: 12px 16px !important;
    }

    .mobile-nav-item {
        min-width: 44px;
        min-height: 44px;
    }
}

/* ─── Page Transition Animation ─── */
@keyframes page-fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 991.98px) {
    .app-content {
        animation: page-fade-in 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* ─── Mobile Hero & Card Improvements ─── */
@media (max-width: 767.98px) {
    .hero-section {
        padding: 32px 0 28px !important;
    }

    .hero-title {
        font-size: 1.9rem !important;
        line-height: 1.2 !important;
    }

    .hero-subtitle {
        font-size: 0.9rem !important;
        margin-bottom: 16px !important;
    }

    .hero-badge {
        font-size: 0.78rem !important;
        padding: 6px 14px !important;
        margin-bottom: 12px !important;
    }

    /* Quick links: horizontal scroll, hide scrollbar, fade right edge */
    .hero-quick-links {
        gap: 8px !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch !important;
        padding: 4px 0 8px !important;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
    }

    .hero-quick-links::-webkit-scrollbar { display: none !important; }

    /* Stats bar: horizontal scroll */
    .stats-bar {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        flex-wrap: nowrap !important;
    }

    .stats-bar::-webkit-scrollbar { display: none; }

    .stat-item {
        flex-shrink: 0 !important;
        padding: 12px 20px !important;
    }

    /* Category grid */
    .category-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 10px !important;
    }

    .category-card {
        padding: 14px 12px !important;
        border-radius: 14px !important;
    }

    .category-card-icon {
        width: 40px !important;
        height: 40px !important;
        border-radius: 10px !important;
        font-size: 1.1rem !important;
        margin-bottom: 8px !important;
    }

    .category-card-title {
        font-size: 0.88rem !important;
        font-weight: 600 !important;
    }

    .category-card-meta { font-size: 0.72rem !important; }
    .category-card-arrow { display: none !important; }

    .feature-card { padding: 18px 16px !important; }

    .section-wrapper { padding: 20px 0 !important; }
    .section-header { margin-bottom: 14px !important; }
    .section-title { font-size: 1.05rem !important; }

    /* Converter card */
    .converter-card {
        border-radius: 16px !important;
        margin-bottom: 12px !important;
    }

    .result-display {
        font-size: 1.6rem !important;
        padding: 14px 16px !important;
        border-radius: 12px !important;
    }

    /* Action buttons: 2-col grid */
    .converter-actions {
        display: grid !important;
        grid-template-columns: 1fr 1fr !important;
        gap: 8px !important;
    }

    .action-btn {
        justify-content: center !important;
        font-size: 0.82rem !important;
        padding: 10px 8px !important;
        border-radius: 10px !important;
    }

    /* Live compare grid */
    .compare-grid {
        grid-template-columns: 1fr 1fr !important;
        gap: 8px !important;
    }

    .compare-card { padding: 10px !important; }
    .cc-name { font-size: 0.72rem !important; }
    .cc-symbol { font-size: 0.7rem !important; }
    .cc-result { font-size: 0.95rem !important; margin: 6px 0 !important; }
    .cc-actions .cc-copy-btn { padding: 4px 6px !important; font-size: 0.68rem !important; }

    /* SVG charts */
    .chart-canvas-wrap {
        overflow-x: auto;
        overflow-y: hidden;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
    }

    .chart-canvas-wrap svg { min-width: 420px; }

    /* Settings */
    .accent-palette-grid {
        justify-content: center;
        width: 100%;
        gap: 12px !important;
    }

    .accent-color-btn { width: 32px !important; height: 32px !important; }

    /* Mini Meter */
    .mm-calculate-btn {
        width: 100% !important;
        min-height: 52px !important;
        font-size: 1rem !important;
        border-radius: 14px !important;
    }

    .mm-hero { padding: 28px 16px 24px !important; }
    .mm-hero-title { font-size: 1.6rem !important; }
    .mm-card { padding: 16px !important; }
    .mm-card-title { font-size: 1.05rem !important; }
    .mm-card-sub { font-size: 0.75rem !important; }

    /* Breadcrumb mobile */
    .converter-breadcrumb {
        padding: 10px 16px !important;
        font-size: 0.8rem !important;
        border-radius: 0 !important;
        margin-bottom: 0 !important;
    }
}

/* ─── Very Small Screens (< 375px) ─── */
@media (max-width: 374.98px) {
    .category-grid { gap: 8px !important; }
    .category-card { padding: 12px 10px !important; }
    .category-card-icon { width: 36px !important; height: 36px !important; }
    .mobile-nav-item { font-size: 0.58rem !important; }
    .mobile-nav-item i { font-size: 1.2rem !important; }
    .hero-title { font-size: 1.7rem !important; }
    .converter-actions { grid-template-columns: 1fr 1fr !important; }
    .action-btn { font-size: 0.76rem !important; padding: 9px 6px !important; }
}

/* ─── Small phone inputs and calculator ─── */
@media (max-width: 479.98px) {
    .calc-widget-card { width: 92vw !important; right: 4vw !important; }
    .cwc-btn { height: 48px !important; font-size: 1.05rem !important; }
    .cwc-display { font-size: 1.35rem !important; padding: 12px 14px !important; min-height: 56px !important; }
    .mm-receipt { padding: 18px 14px !important; }
    .mm-receipt-row { font-size: 0.8rem !important; padding: 6px 0 !important; }
    .mm-receipt-divider { margin: 8px 0 !important; }
}

/* ─── Smooth Scroll / Momentum ─── */
@media (max-width: 991.98px) {
    html { -webkit-overflow-scrolling: touch; }

    body {
        overflow-x: hidden;
        overscroll-behavior-y: contain;
        -webkit-overflow-scrolling: touch;
    }

    .hero-quick-links,
    .stats-bar,
    .chart-canvas-wrap {
        -webkit-overflow-scrolling: touch;
    }
}

/* ─── PWA Safe Area ─── */
@supports (padding: env(safe-area-inset-bottom)) {
    .mobile-nav {
        padding-bottom: env(safe-area-inset-bottom);
        height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
    }
}

/* ─── Toast position on mobile ─── */
@media (max-width: 991.98px) {
    #toast-container {
        top: 68px !important;
        right: 5% !important;
        left: 5% !important;
        width: 90% !important;
        max-width: 90% !important;
    }

    .uuc-toast {
        width: 100% !important;
        max-width: 100% !important;
        box-shadow: 0 10px 25px -5px rgba(0,0,0,0.15) !important;
    }
}

/* ─── Dark Mode Mobile Tweaks ─── */
@media (max-width: 991.98px) {
    [data-theme="dark"] .mobile-nav {
        background: rgba(26, 29, 46, 0.97);
        border-top-color: rgba(45, 49, 85, 0.8);
        box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
    }

    [data-theme="dark"] .mobile-app-header {
        background: rgba(26, 29, 46, 0.97);
        border-bottom-color: rgba(45, 49, 85, 0.8);
    }

    [data-theme="dark"] .mobile-header-btn {
        background: var(--bg-surface-2);
    }
}

/* ─── Hide footer on mobile (bottom nav replaces it) ─── */
@media (max-width: 991.98px) {
    .uuc-footer {
        display: none !important;
    }
}

/* =================================================================
   PREMIUM PROFESSIONAL STYLING OVERRIDES (v52 UPGRADE)
   ================================================================= */

/* Glassmorphism & Modern Soft Shadows */
.card, .settings-group, .stats-bar, .uuc-navbar, .mobile-app-header, .search-dropdown {
    backdrop-filter: blur(14px) saturate(190%) !important;
    -webkit-backdrop-filter: blur(14px) saturate(190%) !important;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
}

[data-theme="light"] .card, [data-theme="light"] .settings-group {
    background: rgba(255, 255, 255, 0.75) !important;
    border: 1px solid rgba(99, 102, 241, 0.08) !important;
    box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.08), 0 1px 3px rgba(99, 102, 241, 0.02) !important;
}

[data-theme="dark"] .card, [data-theme="dark"] .settings-group {
    background: rgba(26, 29, 46, 0.65) !important;
    border: 1px solid rgba(255, 255, 255, 0.04) !important;
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.35) !important;
}

/* High-End Card Hover Effects */
.category-card, .tool-card, .list-group-item {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
    position: relative;
    overflow: hidden;
}

.category-card:hover, .tool-card:hover {
    transform: translateY(-6px) scale(1.015) !important;
    border-color: var(--color-primary) !important;
    box-shadow: 0 22px 35px -10px rgba(99, 102, 241, 0.15) !important;
}

[data-theme="dark"] .category-card:hover, [data-theme="dark"] .tool-card:hover {
    box-shadow: 0 22px 45px -12px rgba(0, 0, 0, 0.5) !important;
}

/* Vibrant Hero Section Upgrades */
.hero-section {
    background: radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 45%),
                radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.12) 0%, transparent 45%),
                var(--bg-surface) !important;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 80px 0 60px !important;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    font-weight: 800;
}

/* Smooth Premium Buttons & Inputs */
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%) !important;
    border: none !important;
    box-shadow: 0 4px 15px var(--color-primary-glow) !important;
    transition: all 0.25s ease !important;
}

.btn-primary:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4) !important;
}

.form-control, .form-select {
    background: var(--bg-surface-2) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 12px !important;
    padding: 12px 18px !important;
    font-size: 0.95rem !important;
    transition: all 0.2s ease !important;
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 4px var(--color-primary-glow) !important;
    background: var(--bg-surface) !important;
}

/* Settings Colors Round Pills */
.accent-color-btn {
    width: 34px !important;
    height: 34px !important;
    border-radius: 50% !important;
    border: 3px solid var(--bg-surface) !important;
    box-shadow: 0 0 0 1px var(--border-color) !important;
    margin-right: 8px;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
}

.accent-color-btn:hover {
    transform: scale(1.22) !important;
}

.accent-color-btn.active {
    box-shadow: 0 0 0 2.5px var(--color-primary) !important;
    transform: scale(1.15) !important;
}

/* Micro-animations and highlights */
.animate-hover {
    transition: var(--transition);
}
.animate-hover:hover {
    transform: scale(1.08) !important;
    color: var(--color-primary) !important;
}



/* =================================================================
   PREMIUM v53 � ADVANCED DESIGN SYSTEM UPGRADE
   ================================================================= */

/* --- Custom Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-page); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { opacity: 0.8; }

/* --- Page Transition System --- */
#page-content {
    animation: pageSlideIn 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes pageSlideIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* --- Navbar Premium --- */
.uuc-navbar {
    backdrop-filter: blur(20px) saturate(200%) !important;
    -webkit-backdrop-filter: blur(20px) saturate(200%) !important;
    border-bottom: 1px solid var(--border-color) !important;
    box-shadow: 0 1px 24px rgba(99,102,241,0.08) !important;
    transition: var(--transition-slow) !important;
}

.brand-icon-wrap {
    background: var(--gradient-primary) !important;
    box-shadow: 0 4px 16px rgba(99,102,241,0.4) !important;
    transition: var(--transition-bounce) !important;
}
.brand-icon-wrap:hover { transform: scale(1.1) rotate(-4deg) !important; }
.brand-name { font-weight: 800 !important; letter-spacing: -0.03em; }

.nav-link {
    position: relative !important;
    font-weight: 500 !important;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 99px;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link:hover::after, .nav-link.active::after { transform: translateX(-50%) scaleX(1); }

/* --- Hero Section Premium Blobs --- */
.hero-section {
    position: relative;
    overflow: hidden;
    padding: 100px 0 80px !important;
    background: var(--bg-surface) !important;
}
.hero-section::before {
    content: '';
    position: absolute;
    top: -120px; left: -120px;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(99,102,241,0.18) 0%, transparent 70%);
    border-radius: 50%;
    animation: blobFloat 8s ease-in-out infinite alternate;
    pointer-events: none;
    z-index: 0;
}
.hero-section::after {
    content: '';
    position: absolute;
    bottom: -80px; right: -100px;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(139,92,246,0.14) 0%, transparent 70%);
    border-radius: 50%;
    animation: blobFloat 10s ease-in-out infinite alternate-reverse;
    pointer-events: none;
    z-index: 0;
}
@keyframes blobFloat {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(40px, 30px) scale(1.1); }
}
.hero-section .container { position: relative; z-index: 1; }

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem) !important;
    font-weight: 900 !important;
    line-height: 1.12 !important;
    letter-spacing: -0.04em !important;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--color-primary) 60%, var(--color-secondary) 100%) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
}
.hero-subtitle {
    font-size: 1.15rem !important;
    color: var(--text-secondary) !important;
    font-weight: 400 !important;
    line-height: 1.6 !important;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 99px;
    background: var(--gradient-primary);
    color: white;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    box-shadow: 0 4px 16px rgba(99,102,241,0.35);
    animation: pulse-badge 2.5s ease-in-out infinite;
}
@keyframes pulse-badge {
    0%, 100% { box-shadow: 0 4px 16px rgba(99,102,241,0.35); }
    50%       { box-shadow: 0 4px 24px rgba(99,102,241,0.6); }
}

.hero-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 12px;
    border-radius: 99px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-bounce);
}
.hero-chip:hover {
    background: rgba(99,102,241,0.08);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* --- Stats Bar Premium --- */
.stats-bar {
    border-radius: var(--border-radius-xl) !important;
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-card) !important;
    padding: 20px 32px !important;
    position: relative;
    overflow: hidden;
}
.stat-value {
    font-size: 1.8rem !important;
    font-weight: 900 !important;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    display: block;
}
.stat-label { font-size: 0.78rem !important; color: var(--text-tertiary) !important; font-weight: 600 !important; text-transform: uppercase; letter-spacing: 0.06em; }

/* --- Category Cards Premium --- */
.category-card {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-card) !important;
    transition: var(--transition-slow) !important;
    overflow: hidden !important;
    cursor: pointer;
}
.category-card:hover {
    transform: translateY(-6px) scale(1.018) !important;
    border-color: var(--color-primary) !important;
    box-shadow: var(--shadow-card-hover) !important;
}
.category-card-icon {
    border-radius: var(--border-radius) !important;
    width: 48px !important;
    height: 48px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 1.3rem !important;
    flex-shrink: 0 !important;
    transition: var(--transition-bounce) !important;
}
.category-card:hover .category-card-icon { transform: scale(1.12) rotate(-6deg) !important; }

/* --- Tool Cards Premium --- */
.tool-card {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-card) !important;
    transition: var(--transition-slow) !important;
    overflow: hidden !important;
}
.tool-card:hover {
    transform: translateY(-5px) scale(1.016) !important;
    border-color: var(--color-primary) !important;
    box-shadow: var(--shadow-card-hover) !important;
}

/* --- Feature Cards Premium --- */
.feature-card {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-card) !important;
    transition: var(--transition-slow) !important;
    padding: 28px 24px !important;
    text-align: center;
}
.feature-card:hover {
    transform: translateY(-5px) !important;
    border-color: var(--color-primary) !important;
    box-shadow: var(--shadow-card-hover) !important;
}
.feature-icon {
    width: 60px !important;
    height: 60px !important;
    border-radius: 16px !important;
    font-size: 1.5rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 auto 18px !important;
    transition: var(--transition-bounce) !important;
}
.feature-card:hover .feature-icon { transform: scale(1.12) rotate(-5deg) !important; }
.feature-title { font-size: 1.05rem !important; font-weight: 700 !important; margin-bottom: 8px !important; }
.feature-desc { color: var(--text-secondary) !important; font-size: 0.88rem !important; line-height: 1.6 !important; }

/* --- CTA Strip --- */
.cta-strip {
    border-radius: var(--border-radius-xl);
    background: var(--gradient-primary);
    padding: 48px 40px;
    position: relative;
    overflow: hidden;
    text-align: center;
    box-shadow: var(--shadow-primary);
}
.cta-strip::before {
    content: '';
    position: absolute;
    top: -60px; right: -60px;
    width: 250px; height: 250px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    pointer-events: none;
}
.cta-strip h2, .cta-strip h3 { color: white !important; font-weight: 900 !important; position: relative; z-index: 1; }
.cta-strip p { color: rgba(255,255,255,0.82) !important; position: relative; z-index: 1; }
.cta-strip .btn-light {
    border-radius: 99px !important;
    font-weight: 700 !important;
    padding: 10px 28px !important;
    position: relative;
    z-index: 1;
    transition: var(--transition-bounce) !important;
}
.cta-strip .btn-light:hover { transform: translateY(-2px) scale(1.04) !important; box-shadow: 0 8px 24px rgba(0,0,0,0.2) !important; }

/* --- Premium Footer --- */
.uuc-footer {
    background: var(--bg-surface) !important;
    border-top: 1px solid var(--border-color) !important;
    padding: 56px 0 24px !important;
}
.footer-brand-title {
    font-size: 1.1rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.footer-brand-desc { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; margin-top: 10px; }
.footer-col-title { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-tertiary); margin-bottom: 16px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 0.88rem; color: var(--text-secondary); text-decoration: none; transition: var(--transition); display: inline-block; }
.footer-links a:hover { color: var(--color-primary); transform: translateX(3px); }
.footer-divider { border-color: var(--border-color) !important; margin: 36px 0 20px !important; opacity: 0.5; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-copy { font-size: 0.82rem; color: var(--text-tertiary); }
.footer-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 99px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* --- Trust Bar --- */
.trust-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    padding: 28px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin: 40px 0;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}
.trust-item i { font-size: 1.1rem; color: var(--color-primary); }

/* --- Swap Button --- */
.swap-btn {
    width: 44px !important;
    height: 44px !important;
    border-radius: 50% !important;
    background: var(--gradient-primary) !important;
    color: white !important;
    border: none !important;
    box-shadow: 0 4px 16px rgba(99,102,241,0.4) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer;
    transition: var(--transition-bounce) !important;
    font-size: 1.1rem !important;
}
.swap-btn:hover { transform: rotate(180deg) scale(1.12) !important; }

/* --- Hub Filter Pill Bar --- */
.hub-filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 99px;
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-bounce);
}
.hub-filter-pill:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}
.hub-filter-pill.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 16px rgba(99,102,241,0.35);
}

/* --- Animation Utilities --- */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.93); }
    to   { opacity: 1; transform: scale(1); }
}

.animate-fade-up { animation: fadeUp 0.4s cubic-bezier(0.4,0,0.2,1) both; }
.animate-fade-in { animation: fadeIn 0.4s ease both; }
.animate-scale-in { animation: scaleIn 0.35s cubic-bezier(0.34,1.56,0.64,1) both; }

.stagger-children > *:nth-child(1)  { animation-delay: 0.04s; }
.stagger-children > *:nth-child(2)  { animation-delay: 0.08s; }
.stagger-children > *:nth-child(3)  { animation-delay: 0.12s; }
.stagger-children > *:nth-child(4)  { animation-delay: 0.16s; }
.stagger-children > *:nth-child(5)  { animation-delay: 0.20s; }
.stagger-children > *:nth-child(6)  { animation-delay: 0.24s; }

/* --- Skeleton Loading --- */
.skeleton {
    background: linear-gradient(90deg, var(--bg-surface-3) 25%, var(--bg-surface-4) 50%, var(--bg-surface-3) 75%);
    background-size: 200% 100%;
    animation: skeleton-shine 1.4s ease infinite;
    border-radius: var(--border-radius);
}
@keyframes skeleton-shine {
    0%   { background-position: -200% center; }
    100% { background-position: 200% center; }
}

/* --- Gradient Text --- */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Badge Pill --- */
.badge-pill { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 99px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.04em; }
.badge-primary { background: rgba(99,102,241,0.12); color: var(--color-primary); border: 1px solid rgba(99,102,241,0.2); }
.badge-success { background: rgba(16,185,129,0.12); color: #10b981; border: 1px solid rgba(16,185,129,0.2); }
.badge-free  { background: linear-gradient(135deg, #10b981, #06b6d4); color: white; }

/* --- About Page --- */
.about-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    margin: 32px 0;
}
.about-stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition-slow);
}
.about-stat-card:hover { transform: translateY(-5px); border-color: var(--color-primary); box-shadow: var(--shadow-card-hover); }
.about-stat-num {
    font-size: 2rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
}
.about-stat-lbl { font-size: 0.82rem; color: var(--text-secondary); font-weight: 600; margin-top: 6px; display: block; }

/* --- Toast Premium --- */
.toast-notification {
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-xl) !important;
    border: 1px solid var(--border-color) !important;
    font-weight: 600 !important;
    backdrop-filter: blur(20px) !important;
}

/* --- Search Premium --- */
.search-dropdown {
    border-radius: var(--border-radius-lg) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-xl) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    overflow: hidden;
}
.search-result-item { transition: var(--transition) !important; }
.search-result-item:hover {
    background: var(--bg-surface-3) !important;
    transform: translateX(3px) !important;
}
.search-result-icon {
    width: 38px !important;
    height: 38px !important;
    border-radius: 10px !important;
    flex-shrink: 0 !important;
}

/* --- Section Sizing --- */
.section-wrapper { padding: 56px 0; }
.features-section { padding: 56px 0 72px; }
.section-title { font-size: clamp(1.5rem, 3vw, 2rem) !important; font-weight: 800 !important; letter-spacing: -0.02em !important; }
.section-subtitle { color: var(--text-secondary) !important; font-size: 1rem !important; margin-top: 8px; }

/* --- Responsive --- */
@media (max-width: 767px) {
    .hero-section { padding: 64px 0 48px !important; }
    .stats-bar { padding: 16px 20px !important; }
    .stat-value { font-size: 1.5rem !important; }
    .section-wrapper { padding: 40px 0; }
    .features-section { padding: 40px 0 48px; }
    .cta-strip { padding: 36px 24px; }
}


/* =================================================================
   ULTRA-PREMIUM HERO SEARCH SYSTEM (v59)
   ================================================================= */

.premium-hero-search {
    position: relative;
    background: var(--bg-surface) !important;
    border-radius: 20px !important;
    border: 2px solid var(--border-color) !important;
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.12), 0 2px 10px rgba(0, 0, 0, 0.05) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    display: flex;
    align-items: center;
    overflow: visible;
}

.premium-hero-search:hover {
    border-color: var(--color-primary) !important;
    box-shadow: 0 16px 50px rgba(99, 102, 241, 0.2), 0 4px 16px rgba(0, 0, 0, 0.08) !important;
    transform: translateY(-2px);
}

.premium-hero-search:focus-within {
    border-color: #6366f1 !important;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.25), 0 20px 60px rgba(99, 102, 241, 0.28) !important;
    transform: translateY(-2px);
}

.hero-search-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 8px;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.hero-search-input {
    width: 100% !important;
    padding: 18px 16px 18px 14px !important;
    border: none !important;
    outline: none !important;
    font-size: 1.05rem !important;
    font-weight: 500 !important;
    background: transparent !important;
    color: var(--text-primary) !important;
}

.hero-search-shortcut {
    margin-right: 12px;
    flex-shrink: 0;
}

.search-kbd {
    padding: 5px 10px;
    border-radius: 8px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: 0.76rem;
    font-weight: 700;
    font-family: inherit;
}

.search-dropdown {
    position: absolute !important;
    top: calc(100% + 12px) !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--bg-surface) !important;
    border-radius: 20px !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.2), 0 4px 20px rgba(99, 102, 241, 0.15) !important;
    backdrop-filter: blur(24px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(24px) saturate(180%) !important;
    overflow: hidden !important;
    z-index: 1000 !important;
    max-height: 480px;
    overflow-y: auto;
}

.search-result-item:hover {
    background: rgba(99, 102, 241, 0.08) !important;
    transform: translateX(4px);
}


/* =================================================================
   HERO STAT PILLS & ENHANCED SEARCH STYLING (v60)
   ================================================================= */

.hero-stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 99px;
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04) !important;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary) !important;
    transition: all 0.25s ease;
}

.hero-stat-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.12) !important;
    border-color: var(--color-primary) !important;
}

.hero-stat-pill i {
    font-size: 1.05rem;
}

.premium-hero-search {
    background: var(--bg-surface) !important;
    border: 2px solid var(--border-color) !important;
    border-radius: 20px !important;
    box-shadow: 0 14px 40px rgba(99, 102, 241, 0.12), 0 2px 10px rgba(0, 0, 0, 0.04) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.premium-hero-search:hover {
    border-color: #818cf8 !important;
    box-shadow: 0 18px 50px rgba(99, 102, 241, 0.22) !important;
    transform: translateY(-2px);
}

.premium-hero-search:focus-within {
    border-color: #6366f1 !important;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.22), 0 22px 64px rgba(99, 102, 241, 0.28) !important;
    transform: translateY(-2px);
}


/* =================================================================
   REFINED COMPACT HERO TEXT & ELEVATED SEARCH BAR (v61)
   ================================================================= */

.hero-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem) !important;
    font-weight: 900 !important;
    letter-spacing: -0.025em !important;
    line-height: 1.16 !important;
}

.hero-subtitle {
    font-size: 0.94rem !important;
    line-height: 1.55 !important;
    color: var(--text-secondary) !important;
    max-width: 500px !important;
}

.hero-badge {
    font-size: 0.76rem !important;
    font-weight: 700 !important;
    letter-spacing: 0.03em !important;
    padding: 5px 14px !important;
}

.premium-hero-search {
    background: var(--bg-surface) !important;
    border: 1.5px solid var(--border-color) !important;
    border-radius: 18px !important;
    box-shadow: 0 10px 32px rgba(99, 102, 241, 0.12), 0 2px 8px rgba(0, 0, 0, 0.04) !important;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.premium-hero-search .hero-search-icon-wrap {
    width: 42px !important;
    height: 42px !important;
    border-radius: 12px !important;
    font-size: 1.1rem !important;
    margin-left: 6px !important;
}

.premium-hero-search .hero-search-input {
    padding: 14px 14px 14px 12px !important;
    font-size: 0.98rem !important;
}

.premium-hero-search:hover {
    border-color: #818cf8 !important;
    box-shadow: 0 14px 40px rgba(99, 102, 241, 0.2) !important;
}

.premium-hero-search:focus-within {
    border-color: #6366f1 !important;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.22), 0 16px 50px rgba(99, 102, 241, 0.25) !important;
}




/* ─────────────────────────────────────────────
   Print Receipt Only for Mini Meter
   ───────────────────────────────────────────── */
@media print {
    body * {
        visibility: hidden !important;
    }
    #mm-receipt-card, #mm-receipt-card * {
        visibility: visible !important;
    }
    #mm-receipt-card .btn,
    #mm-receipt-card .row.g-2 {
        display: none !important;
    }
    #mm-receipt-card {
        position: absolute !important;
        left: 0 !important;
        top: 0 !important;
        width: 100% !important;
        max-width: 600px !important;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        background: #ffffff !important;
        color: #000000 !important;
    }
    #mm-receipt-card div[style*="background:linear-gradient"] {
        background: #0d9488 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
}