:root {
    /* --- Dark Theme (Default) --- */
    --bg-main: #0a0b10;
    --sticky-bg: rgba(10, 11, 16, 0.95);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent: #5b5dfa;
    --accent-glow: rgba(91, 93, 250, 0.3);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --portal-card: rgba(255, 255, 255, 0.03);
    --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    --blur: 12px;
}

.light-theme {
    /* --- Light Theme --- */
    --bg-main: #f0f2f5;
    --sticky-bg: rgba(240, 242, 245, 0.95);
    --glass-bg: rgba(0, 0, 0, 0.03);
    --glass-border: rgba(0, 0, 0, 0.08);
    --accent: #3b5bdb;
    --accent-glow: rgba(59, 91, 219, 0.15);
    --text-primary: #111111;
    --text-secondary: #444444;
    --portal-card: #ffffff;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
}

/* --- Global Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', 'Vazirmatn', sans-serif;
}

html,
body {
    overflow: visible;
    /* Support sticky */
}

body {
    background: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
    background-image: radial-gradient(circle at 20% 30%, rgba(91, 93, 250, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(91, 93, 250, 0.05) 0%, transparent 40%);
}

.light-theme body {
    background-image: none;
}

/* --- Navigation --- */
.top-nav {
    position: fixed;
    top: 2rem;
    right: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    z-index: 1100;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--accent);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.4rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    backdrop-filter: blur(var(--blur));
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--accent);
}

.login-btn {
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--accent);
    border-radius: 50px;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.login-btn:hover {
    background: var(--accent);
    color: white;
}

/* --- Toggle Components (Shared Styles) --- */
.custom-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.toggle-track {
    width: 36px;
    height: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    position: relative;
    transition: all 0.3s;
}

.toggle-thumb {
    width: 14px;
    height: 14px;
    background: var(--text-primary);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

.custom-toggle input:checked+.toggle-track {
    background: var(--accent);
    border-color: var(--accent);
}

.custom-toggle input:checked+.toggle-track .toggle-thumb {
    left: 18px;
    background: white;
}

.toggle-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* --- Header & Search --- */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 4rem;
    margin-top: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, #aaa);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.light-theme h1 {
    background: linear-gradient(to right, var(--accent), #111);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.sticky-wrapper {
    position: sticky !important;
    top: 0;
    z-index: 1000;
    background: var(--sticky-bg);
    backdrop-filter: blur(25px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1.5rem 0;
    margin-bottom: 2rem;
}

.search-box {
    position: relative;
    display: flex;
    gap: 12px;
}

input[type="text"] {
    flex: 1;
    padding: 1.2rem 1.5rem;
    font-size: 1.1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    color: var(--text-primary);
    transition: all 0.3s;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.search-btn {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0 2rem;
    border-radius: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

/* --- Control Bar --- */
.control-bar {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
    align-items: center;
}

.format-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.format-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
}

.format-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* --- Results --- */
.video-card {
    background: var(--portal-card);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
}

.match-score {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.summary-box {
    background: rgba(91, 93, 250, 0.03);
    border-right: 3px solid var(--accent);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.summary-title {
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

/* --- Portal Specific --- */
.portal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.portal-card {
    background: var(--portal-card);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    position: relative;
    box-shadow: var(--card-shadow);
}

.status-badge {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    font-size: 0.7rem;
    padding: 0.2rem 0.8rem;
    border-radius: 50px;
    background: var(--glass-bg);
    color: var(--text-secondary);
}

.active-badge {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
}

/* --- Highlight Mark --- */
.highlight-mark {
    background: rgba(91, 93, 250, 0.2);
    color: var(--text-primary);
    padding: 0 4px;
    border-radius: 4px;
    border-bottom: 2px solid var(--accent);
    font-weight: 500;
}

.light-theme .highlight-mark {
    background: rgba(255, 215, 0, 0.3);
}

/* --- Utils --- */
.moon-icon {
    display: none;
}

.light-theme .moon-icon {
    display: block;
}

.light-theme .sun-icon {
    display: none;
}

footer {
    text-align: center;
    margin-top: 4rem;
    color: var(--text-secondary);
    font-size: 0.8rem;
    padding-bottom: 2rem;
}

/* --- Results Sections & Collapsing --- */
.results-section {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--glass-border);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-title::after {
    content: '▼';
    font-size: 0.8rem;
    transition: transform 0.3s;
}

.collapsed .section-title::after {
    transform: rotate(-90deg);
}

.collapsed .section-content {
    display: none;
}

/* --- Video Actions & Watch Button --- */
.video-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
}

.watch-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: white;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.watch-btn svg {
    width: 20px;
    height: 20px;
}

.watch-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px var(--accent-glow);
}

/* --- Format Toggle Logic --- */
[data-format="short"] .summary-box {
    display: none;
}

/* --- Confidence Colors --- */
.conf-high {
    color: #22c55e !important;
}

.conf-med {
    color: #eab308 !important;
}

.conf-low {
    color: #ef4444 !important;
}

/* --- Skeleton Loader --- */
.skeleton-loader {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.skeleton-card {
    height: 150px;
    background: linear-gradient(90deg, var(--glass-bg) 25%, var(--glass-border) 50%, var(--glass-bg) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 20px;
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* --- Notices & Errors --- */
.correction-notice,
.fallback-notice,
.fast-mode-notice {
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--glass-border);
}

.error-box {
    background: rgba(239, 68, 68, 0.05);
    border: 1px solid #ef4444 !important;
}