* { margin: 0; padding: 0; box-sizing: border-box; }

/* Light theme (default) */
:root {
    /* Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-card: #ffffff;
    --bg-hover: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-muted: #888888;
    --accent-green: #059669;
    --accent-blue: #2563eb;
    --accent-purple: #7c3aed;
    --accent-pink: #db2777;
    --accent-red: #dc2626;
    --border: #e0e0e0;
    --border-color: #e0e0e0;

    /* Material Design Elevation (light) */
    --shadow-1: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-2: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.07), 0 3px 6px rgba(0,0,0,0.05);
    --shadow-hover: 0 8px 16px rgba(0,0,0,0.1), 0 3px 6px rgba(0,0,0,0.08);

    /* Material Design Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Dark theme - auto from system preference */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f0f0f;
        --bg-secondary: #171717;
        --bg-card: #1f1f1f;
        --bg-hover: #2a2a2a;
        --text-primary: #f5f5f5;
        --text-secondary: #a3a3a3;
        --text-muted: #737373;
        --accent-green: #10b981;
        --accent-blue: #3b82f6;
        --accent-purple: #8b5cf6;
        --accent-pink: #ec4899;
        --accent-red: #ef4444;
        --border: #2e2e2e;
        --border-color: #2e2e2e;
        --shadow-1: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
        --shadow-2: 0 4px 6px rgba(0,0,0,0.25), 0 2px 4px rgba(0,0,0,0.2);
        --shadow-3: 0 10px 20px rgba(0,0,0,0.25), 0 3px 6px rgba(0,0,0,0.15);
        --shadow-hover: 0 8px 16px rgba(0,0,0,0.35), 0 3px 6px rgba(0,0,0,0.25);
    }
}

/* Manual override: force dark */
[data-theme="dark"] {
    --bg-primary: #0f0f0f;
    --bg-secondary: #171717;
    --bg-card: #1f1f1f;
    --bg-hover: #2a2a2a;
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;
    --accent-green: #10b981;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    --accent-red: #ef4444;
    --border: #2e2e2e;
    --border-color: #2e2e2e;
    --shadow-1: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
    --shadow-2: 0 4px 6px rgba(0,0,0,0.25), 0 2px 4px rgba(0,0,0,0.2);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.25), 0 3px 6px rgba(0,0,0,0.15);
    --shadow-hover: 0 8px 16px rgba(0,0,0,0.35), 0 3px 6px rgba(0,0,0,0.25);
}

/* Manual override: force light */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-card: #ffffff;
    --bg-hover: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-muted: #888888;
    --accent-green: #059669;
    --accent-blue: #2563eb;
    --accent-purple: #7c3aed;
    --accent-pink: #db2777;
    --accent-red: #dc2626;
    --border: #e0e0e0;
    --border-color: #e0e0e0;
    --shadow-1: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-2: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-3: 0 10px 20px rgba(0,0,0,0.07), 0 3px 6px rgba(0,0,0,0.05);
    --shadow-hover: 0 8px 16px rgba(0,0,0,0.1), 0 3px 6px rgba(0,0,0,0.08);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Inline nav in header */
.site-header .header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.site-header .header-nav a {
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.site-header .header-nav a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.site-header .header-nav a.active {
    background: var(--accent-blue);
    color: white;
}

.header-sep {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.nav-home:hover, .nav-link:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.nav-external {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.15s;
}

.nav-external:hover {
    color: var(--text-primary);
    text-decoration: none;
}

.logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-left: 0.5rem;
    text-decoration: none;
}

.logo:hover {
    text-decoration: none;
}

.tagline {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-left: 0.5rem;
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Theme toggle button (monetary style) */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.theme-toggle-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.theme-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: background 0.2s;
}

.theme-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: transform 0.2s, background 0.2s;
}

/* Toggle active state for manual dark mode */
[data-theme="dark"] .theme-switch {
    background: #3b82f6;
    border-color: #3b82f6;
}

[data-theme="dark"] .theme-switch::after {
    transform: translateX(20px);
    background: white;
}

/* Toggle active state for system dark mode (when no manual override) */
@media (prefers-color-scheme: dark) {
    html:not([data-theme="light"]) .theme-switch {
        background: #3b82f6;
        border-color: #3b82f6;
    }

    html:not([data-theme="light"]) .theme-switch::after {
        transform: translateX(20px);
        background: white;
    }
}

.theme-toggle:hover .theme-switch {
    border-color: var(--text-muted);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-green);
}

.stat-card.purple::before {
    background: var(--accent-purple);
}

.stat-card.blue::before {
    background: var(--accent-blue);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Period Tabs (Today/Week/Month) */
.period-tabs-container {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: 0.5rem;
    width: fit-content;
    border: 1px solid var(--border);
}

.period-tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 0.375rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.period-tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.period-tab-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
}

[data-theme="dark"] .period-tab-btn.active {
    background: #f5f5f5;
    color: #0a0a0a;
}

.period-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.period-content.active {
    display: block;
}

/* Trending Section */
.trending-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.trending-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.trending-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-card);
    border-radius: 0.375rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.trending-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.trending-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.trend-pill {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: 0.625rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.trend-pill:hover {
    border-color: var(--accent-green);
    transform: translateY(-2px);
}

.trend-badge {
    background: var(--accent-green);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.trend-badge.down {
    background: var(--accent-red);
}

.rank-shift {
    font-size: 0.7rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.rank-shift.up {
    color: var(--accent-green);
}

.rank-shift.down {
    color: var(--accent-red);
}

.trend-group {
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
    margin-left: 0.25rem;
}

.trend-group-prefix {
    font-size: 0.7rem;
    color: var(--accent-blue);
    font-weight: 500;
    margin-right: 0.25rem;
}

.trend-group-prefix::after {
    content: '/';
    margin-left: 0.25rem;
    color: var(--text-muted);
}

.trending-summary {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.trending-summary ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.trending-summary li {
    padding: 0.25rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.trending-summary li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
}

/* Top Repos Section */
.top-repos-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.section-icon {
    font-size: 1.5rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.top-repos-summary {
    margin-bottom: 1.25rem;
    padding: 1rem;
    background: var(--bg-primary);
    border-radius: 0.75rem;
    border-left: 3px solid var(--accent-green);
}

.top-repos-summary ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.top-repos-summary li {
    padding: 0.35rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.top-repos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    padding-top: 4px;  /* Room for hover lift effect */
}

.top-repo-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    word-break: break-word;
}

.top-repo-meta {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
}

.top-repo-meta .lang {
    color: var(--accent-blue);
}

.top-repo-meta .stars {
    color: var(--text-muted);
}

.top-repo-meta .stars-gained {
    color: #f97316;
    font-weight: 600;
    font-size: 0.8rem;
}

.repo-activity {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.repo-bullets {
    margin: 0.5rem 0 0 1rem;
    padding: 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}
.repo-bullets li {
    margin-bottom: 0.2rem;
}

.top-repo-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.4;
}

.top-repo-abstract {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.5;
    margin-top: 0.5rem;
}

.top-repo-link {
    text-decoration: none;
    display: block;
}

.top-repo-link:hover {
    text-decoration: none;
}

.top-repo-link:hover .top-repo-name,
.top-repo-link:hover .top-repo-desc {
    text-decoration: none;
}

.top-repo-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-1);
}

.top-repo-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* GitHub language sections */
.gh-category {
    margin-bottom: 1.25rem;
}

.gh-cat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.75rem;
    background: var(--bg-primary);
    border-radius: 0.375rem;
}

.gh-cat-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.gh-cat-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 0.2rem 0.5rem;
    border-radius: 1rem;
}

.gh-repos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 0.75rem;
}

.gh-repo-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.75rem;
    transition: all 0.2s ease;
}

.gh-repo-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.gh-repo-link {
    text-decoration: none;
    display: block;
}

.gh-repo-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.gh-repo-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.gh-repo-meta .stars-gained {
    color: #f97316;
    font-weight: 600;
}

.gh-repo-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

.see-all-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 0.5rem 1.25rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.see-all-btn:hover {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

.repo-extras {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.repo-extra-item {
    display: block;
    padding: 0.4rem 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.repo-extra-item:hover {
    color: var(--accent-blue);
}

.extra-type {
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
    margin-right: 0.5rem;
    font-weight: 500;
}

.extra-type.issue {
    background: #fef3c7;
    color: #92400e;
}

.extra-type.disc {
    background: #dbeafe;
    color: #1e40af;
}

.issue-label {
    font-size: 0.65rem;
    padding: 0.1rem 0.3rem;
    border-radius: 0.2rem;
    background: var(--bg-secondary);
    color: var(--text-muted);
    margin-left: 0.25rem;
}

/* Collapsible sections */
.section-header.clickable {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.collapsible .section-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapsible .section-content.expanded {
    max-height: none;
}

.section-header .expand-icon {
    transition: transform 0.3s ease;
    color: var(--text-muted);
}

.section-header.collapsed .expand-icon {
    transform: rotate(-90deg);
}

/* Compact language cards grid */
.lang-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .lang-cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .lang-cards-grid {
        grid-template-columns: 1fr;
    }
}

.lang-card {
    background: var(--bg-card);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-1);
}

.lang-card:hover {
    background: var(--bg-card);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.lang-card.active {
    background: var(--bg-card);
    border-color: var(--accent);
}

.lang-card-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.lang-card-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.lang-card-stars {
    color: #f97316;
}

.lang-details-container {
    margin-top: 0.5rem;
}

.lang-details {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.lang-details-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.close-details {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
}

.close-details:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Group sections */
.group-section {
    margin-bottom: 1rem;
}

.group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.group-header:hover {
    background: var(--bg-card);
    border-color: var(--text-muted);
}

.group-header.expanded {
    border-radius: 0.375rem 0.375rem 0 0;
    border-bottom-color: transparent;
}

.group-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.group-indicator {
    width: 4px;
    height: 40px;
    border-radius: 2px;
}

.group-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.group-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.group-count {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-green);
}

.expand-icon {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: transform 0.2s ease;
}

.group-header.expanded .expand-icon {
    transform: rotate(180deg);
}

/* Group details */
.group-details {
    display: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-top: none;
    border-radius: 0 0 0.375rem 0.375rem;
    padding: 1.25rem;
}

.group-details.expanded {
    display: block;
}

.group-summary {
    background: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    border-left: 3px solid var(--accent-blue);
}

.summary-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.summary-list li {
    position: relative;
    padding-left: 1.25rem;
    margin-bottom: 0.5rem;
}

.summary-list li:last-child {
    margin-bottom: 0;
}

.summary-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-green);
}

/* Category grid */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}

.cat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-1);
}

.cat-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.cat-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.cat-id {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.cat-name {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.cat-trend {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
}

.cat-trend.up {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.cat-trend.down {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

.cat-trend.stable {
    background: rgba(107, 114, 128, 0.15);
    color: var(--text-muted);
}

.cat-count {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.cat-summary {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.cat-summary ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cat-summary li {
    position: relative;
    padding-left: 1rem;
    margin-bottom: 0.35rem;
}

.cat-summary li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-size: 0.75rem;
}

.sparkline {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 24px;
}

.spark-bar {
    flex: 1;
    background: linear-gradient(to top, var(--accent-blue), var(--accent-purple));
    border-radius: 2px;
    min-height: 3px;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.cat-card:hover .spark-bar {
    opacity: 1;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 100;
    padding: 2rem;
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 1rem;
    max-width: 700px;
    width: 100%;
    margin-top: 3rem;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(-20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-summary {
    background: var(--bg-primary);
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.8;
    border-left: 3px solid var(--accent-green);
}

.paper-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

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

.paper-title {
    color: var(--accent-green);
    font-weight: 500;
    font-size: 0.95rem;
    line-height: 1.5;
    text-decoration: none;
    display: block;
    transition: color 0.2s;
}

a.paper-title:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

a.paper-title::after {
    content: ' ↗';
    font-size: 0.8em;
    opacity: 0.6;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer a {
    color: var(--text-secondary);
    text-decoration: none;
}

footer a:hover {
    color: var(--accent-green);
}

/* Today's Pulse Section - prominent hero area */
.pulse-section {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.pulse-header {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pulse-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.pulse-title::before {
    content: '⚡';
    margin-right: 0.4rem;
}

/* Pulse categories grid - 2 column layout */
.pulse-categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

/* Category card - grouped container */
.pulse-category-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 4px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-1);
    transition: all var(--transition-normal);
}

.pulse-category-card:hover {
    box-shadow: var(--shadow-2);
}

/* Source-colored left borders */
.pulse-category-card.reddit { border-left-color: #ff4500; }
.pulse-category-card.github { border-left-color: var(--accent-green); }
.pulse-category-card.academia { border-left-color: var(--accent-purple); }
.pulse-category-card.industry { border-left-color: var(--accent-blue); }
.pulse-category-card.hn { border-left-color: #ff6600; }
.pulse-category-card.hf { border-left-color: #fbbf24; }
.pulse-category-card.research { border-left-color: var(--accent-purple); }
.pulse-category-card.china { border-left-color: #ef4444; }

/* Category header - clickable link to full page */
.pulse-category-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    transition: background var(--transition-fast);
}

.pulse-category-header:hover {
    background: var(--bg-hover);
}

.pulse-category-icon {
    font-size: 1rem;
}

.pulse-category-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.pulse-category-arrow {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.pulse-category-header:hover .pulse-category-arrow {
    transform: translateX(3px);
}

/* Items container */
.pulse-category-items {
    padding: 0.5rem;
}

/* Individual item - clickable link */
.pulse-item {
    display: block;
    position: relative;
    padding: 0.75rem;
    padding-right: 2rem; /* Space for external link indicator */
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background var(--transition-fast);
    margin-bottom: 0.25rem;
}

.pulse-item:last-child {
    margin-bottom: 0;
}

.pulse-item:hover {
    background: var(--bg-hover);
}

.pulse-item-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 0.25rem;
    transition: color var(--transition-fast);
}

/* Visual link indicator on hover */
.pulse-item:hover .pulse-item-title {
    color: var(--text-secondary);
}

/* External link indicator */
.pulse-item::after {
    content: '↗';
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    font-size: 0.7rem;
    color: var(--text-muted);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.pulse-item:hover::after {
    opacity: 1;
}

.pulse-item-score {
    display: inline-block;
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.35rem;
    font-weight: 500;
}

.pulse-item-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 0.35rem;
}

.pulse-item-bullets {
    margin: 0;
    padding: 0 0 0 0.75rem;
    font-size: 0.7rem;
    color: var(--text-secondary);
    line-height: 1.5;
    border-left: 2px solid var(--border);
}

.pulse-item-bullets li {
    margin-bottom: 0.2rem;
    padding-left: 0.2rem;
}

.pulse-item-bullets li:last-child {
    margin-bottom: 0;
}

/* Responsive: stack on mobile */
@media (max-width: 768px) {
    .pulse-categories-grid {
        grid-template-columns: 1fr;
    }

    .pulse-section {
        padding: 1rem;
    }
}

/* Social Trends Section - 8 items in 2-column grid */
.social-trends-section {
    margin-bottom: 1.25rem;
}

.social-trends-header {
    margin-bottom: 0.75rem;
}

.social-trends-title {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.social-trends-title:hover {
    color: var(--text-secondary);
}

.social-trends-title .pulse-category-arrow {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.social-trends-title:hover .pulse-category-arrow {
    transform: translateX(3px);
}

.social-trends-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.social-trend-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.social-trend-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-1);
}

.social-trend-icon {
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.social-trend-content {
    flex: 1;
    min-width: 0;
}

a.social-trend-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a.social-trend-title:hover {
    color: var(--accent-blue);
}

.social-trend-title {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.social-trend-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.social-trend-item .pulse-item-bullets {
    margin-top: 0.35rem;
    font-size: 0.7rem;
}

/* Trending One-liner for Search + Twitter */
.trending-oneliner {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    font-size: 0.8rem;
}

.trending-line {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.trending-label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 0.25rem;
    text-decoration: none;
    cursor: default;
}

.trending-label:hover {
    color: var(--text-secondary);
    text-decoration: none;
}

.trend-source {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-right: 0.75rem;
}

.trend-icon {
    font-size: 0.9rem;
}

.trend-link {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.trend-link:hover {
    color: var(--text-secondary);
    text-decoration: none;
}

.trend-text {
    color: var(--text-secondary);
}

.trend-bullet {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-style: italic;
    margin-left: 0.2rem;
}

/* Trending Grid Section - 2 columns for Search + Twitter */
.trending-grid-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    padding: 0.75rem 1rem;
}

.trending-header {
    margin-bottom: 0.6rem;
}

.trending-header .trending-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.trending-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.35rem 1rem;
    font-size: 0.8rem;
}

.trending-grid .trending-line {
    display: flex;
    align-items: flex-start;
    gap: 0.4rem;
}

/* Responsive: Social trends and trending grid */
@media (max-width: 768px) {
    .social-trends-grid {
        grid-template-columns: 1fr;
    }

    .trending-oneliner {
        padding: 0.6rem 0.75rem;
        font-size: 0.75rem;
    }

    .trending-grid {
        grid-template-columns: 1fr;
    }

    .trending-grid-section {
        padding: 0.6rem 0.75rem;
        font-size: 0.75rem;
    }

    .trend-source {
        margin-right: 0.5rem;
    }
}

/* Navigation Cards Grid */
.nav-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .nav-cards-grid {
        grid-template-columns: 1fr;
    }
}

.nav-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
    border-left: 4px solid var(--border);
}

.nav-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.nav-card.social { border-left-color: #ff4500; }
.nav-card.social:hover { background: rgba(255, 69, 0, 0.05); }

.nav-card.code { border-left-color: var(--accent-green); }
.nav-card.code:hover { background: rgba(16, 185, 129, 0.05); }

.nav-card.research { border-left-color: var(--accent-purple); }
.nav-card.research:hover { background: rgba(139, 92, 246, 0.05); }

.nav-card-icon {
    font-size: 1.5rem;
}

.nav-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.nav-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-card-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.nav-card-arrow {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: transform 0.2s;
}

.nav-card:hover .nav-card-arrow {
    transform: translateX(4px);
    color: var(--text-primary);
}

/* Unified Header - shared across all pages */
.unified-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1rem;
    gap: 1rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    flex-shrink: 0;
}

.header-brand-icon {
    font-size: 1.1rem;
}

.header-brand-text {
    font-size: 1rem;
    font-weight: 600;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.header-nav a {
    padding: 0.35rem 0.6rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.header-nav a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.header-nav a.active {
    background: var(--accent-blue);
    color: white;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.header-external {
    padding: 0.35rem 0.6rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: all 0.15s;
}

.header-external:hover {
    color: var(--text-primary);
}

/* Material Design Toggle Switch */
.theme-toggle-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.theme-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    width: 44px;
    height: 24px;
    cursor: pointer;
    flex-shrink: 0;
}

.theme-switch input {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
    margin: 0;
    z-index: 1;
}

.theme-slider {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
}

.theme-slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    top: 3px;
    background-color: white;
    border-radius: 50%;
    transition: transform var(--transition-normal);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.theme-switch input:checked + .theme-slider {
    background-color: var(--accent-blue);
}

.theme-switch input:checked + .theme-slider::before {
    transform: translateX(20px);
}

.theme-switch:hover .theme-slider {
    background-color: var(--text-muted);
}

.theme-switch input:checked:hover + .theme-slider {
    background-color: #2563eb;
}

/* Region tabs for Social page */
.region-tabs-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.region-tabs {
    display: flex;
    gap: 0.5rem;
}

.region-tab {
    padding: 0.5rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-1);
}

.region-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    box-shadow: var(--shadow-2);
}

.region-tab.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: var(--shadow-2);
}

.region-tabs-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.region-content {
    display: none;
}

.region-content.active {
    display: block;
}

/* West sub-tabs (Reddit/HN/Google) */
.west-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.west-tab {
    padding: 0.5rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-1);
}

.west-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    box-shadow: var(--shadow-2);
}

.west-tab.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: var(--shadow-2);
}

.west-content {
    display: none;
}

.west-content.active {
    display: block;
}

/* Social page flat tabs */
.social-tabs-bar {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: 1.5rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}

.social-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.social-tab {
    padding: 0.5rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-1);
}

.social-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    box-shadow: var(--shadow-2);
}

.social-tab.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
    box-shadow: var(--shadow-2);
}

.social-panel {
    display: none;
}

.social-panel.active {
    display: block;
}

/* Legacy page-header support */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 1.25rem;
}

.page-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
}

.page-logo-icon {
    font-size: 1.25rem;
}

.page-logo-text {
    font-size: 1.1rem;
    font-weight: 600;
}

.page-nav {
    display: flex;
    gap: 0.25rem;
}

.page-nav a {
    padding: 0.4rem 0.75rem;
    border-radius: 0.375rem;
    text-decoration: none;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.page-nav a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.page-nav a.active {
    background: var(--accent-blue);
    color: white;
}

.page-stats {
    display: flex;
    gap: 1rem;
    padding: 0.5rem 0;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.page-stat strong {
    color: var(--text-primary);
}

.page-stat-date {
    margin-left: auto;
    color: var(--text-muted);
}

/* Top repos section for opensource page */
.top-repos-section {
    margin-bottom: 1.5rem;
}

.top-repos-title {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.top-repos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.5rem;
}

.top-repo-card {
    display: block;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.15s;
}

.top-repo-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-1px);
}

.top-repo-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.top-repo-stars {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.top-repo-stars .stars-gained {
    color: #22c55e;
    font-weight: 600;
}

.top-repo-desc {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* Expandable Sections (Accordion) */
.expandable-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}

.section-header:hover {
    background: var(--bg-tertiary);
}

.section-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-icon {
    font-size: 1.1rem;
}

.section-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.section-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: 0.2rem 0.5rem;
    border-radius: 1rem;
}

.section-toggle {
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--text-muted);
    width: 1.5rem;
    text-align: center;
}

.section-content {
    display: none;
    padding: 0 1.25rem 1.25rem;
}

.expandable-section.expanded .section-content {
    display: block;
}

.expandable-section.expanded .section-toggle {
    transform: rotate(0deg);
}

/* Section link cards - for navigating to separate pages */
.section-link-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    margin-bottom: 0.75rem;
    padding: 1rem 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: background 0.15s, transform 0.15s;
}

.section-link-card:hover {
    background: var(--bg-hover);
    transform: translateX(4px);
}

.section-link-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-link-card .section-icon {
    font-size: 1.25rem;
}

.section-link-card .section-title {
    font-weight: 600;
    font-size: 1rem;
}

.section-link-card .section-count {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-left: 0.5rem;
}

.section-link-arrow {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: transform 0.15s;
}

.section-link-card:hover .section-link-arrow {
    transform: translateX(4px);
    color: var(--accent-blue);
}

/* Mobile: all sections collapsed by default */
@media (max-width: 768px) {
    .expandable-section {
        margin-bottom: 0.5rem;
    }

    .expandable-section.expanded .section-content {
        display: block;
    }

    .section-header {
        padding: 0.875rem 1rem;
    }

    .section-content {
        padding: 0 1rem 1rem;
    }

    .pulse-section {
        padding: 1rem;
    }

    .pulse-badges {
        justify-content: center;
    }
}

/* Navigation */
.nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-home {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

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

.nav-links a.active {
    color: var(--text-primary);
    font-weight: 500;
}

@media (max-width: 768px) {
    .nav-bar {
        flex-direction: column;
        gap: 1rem;
    }
    .nav-links {
        gap: 1rem;
    }
}

/* Responsive - Tablet */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .stat-value {
        font-size: 1.75rem;
    }

    /* Period tabs (Today/Week/Month) - make scrollable */
    .period-tabs-container {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    .period-tabs-container::-webkit-scrollbar {
        display: none;
    }
    .period-tab-btn {
        padding: 0.625rem 1rem;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .trending-pills {
        flex-direction: column;
    }

    .cat-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .top-repos-grid {
        grid-template-columns: 1fr;
    }

    .group-right {
        gap: 1rem;
    }

    .group-count {
        font-size: 1.25rem;
    }

    .group-header {
        padding: 1rem;
    }

    .group-info h3 {
        font-size: 1rem;
    }

    /* Header responsive */
    .site-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .header-left {
        flex-wrap: wrap;
        gap: 0.25rem 0.5rem;
    }

    .tagline {
        display: none;
    }

    .last-updated {
        font-size: 0.75rem;
    }

    .header-right {
        width: 100%;
        justify-content: space-between;
    }

    /* Modal responsive */
    .modal {
        padding: 1rem;
    }

    .modal-content {
        width: 100%;
        max-width: none;
        border-radius: 0.5rem;
    }
}

/* Responsive - Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0.75rem;
    }

    .header-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .header-sep {
        display: none;
    }

    .nav-home, .nav-link, .logo {
        font-size: 0.85rem;
    }

    /* Stack stats vertically on small screens */
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    /* Period tabs - compact */
    .period-tabs-container {
        padding: 0.375rem;
        gap: 0.25rem;
    }

    .period-tab-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    .period-tab-btn .tab-count {
        padding: 0.15rem 0.4rem;
        font-size: 0.7rem;
    }

    /* Category grid */
    .cat-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .cat-card {
        padding: 1rem;
    }

    .cat-count {
        font-size: 1.5rem;
    }

    /* Group sections */
    .group-left {
        gap: 0.5rem;
    }

    .group-indicator {
        height: 30px;
    }

    .group-meta {
        font-size: 0.75rem;
    }

    /* Trending section */
    .trending-section,
    .top-repos-section {
        padding: 1rem;
    }

    .trend-pill {
        padding: 0.5rem 0.75rem;
        font-size: 0.8rem;
    }

    /* Highlights */
    .highlight-item {
        padding: 0.625rem;
    }

    .highlight-title {
        font-size: 0.8rem;
    }
}

/* Extra small screens */
@media (max-width: 360px) {
    .period-tab-btn .tab-count {
        display: none;
    }

    .period-tab-btn {
        padding: 0.5rem;
        font-size: 0.75rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .pulse-badge {
        padding: 0.375rem 0.625rem;
        font-size: 0.8rem;
    }
}

/* Trending Plates Grid (Research categories) */
.trending-plates-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.75rem;
    width: 100%;
}

.trending-plate {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.875rem;
    transition: all 0.2s ease;
}

.trending-plate:hover {
    border-color: var(--text-muted);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.trending-plate-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.trending-plate-group {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.trending-plate-change {
    font-size: 0.8rem;
    font-weight: 600;
}

.trending-plate-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.trending-plate-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.trending-plate-cat {
    font-family: 'Monaco', 'Menlo', monospace;
    background: var(--bg-secondary);
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
}

.trending-plate-count {
    color: var(--text-secondary);
}

@media (max-width: 1200px) {
    .trending-plates-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .trending-plates-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .trending-plates-grid {
        grid-template-columns: 1fr;
    }
}

/* HN source styling for pulse */
.pulse-plate.hn { border-left-color: #ff6600; }
.pulse-plate.hn:hover { background: rgba(255, 102, 0, 0.03); }
.pulse-badge.hn:hover {
    border-color: #ff6600;
    color: #ff6600;
}

/* HuggingFace Papers source styling for pulse */
.pulse-plate.hf { border-left-color: #ffcc00; }
.pulse-plate.hf:hover { background: rgba(255, 204, 0, 0.03); }
.pulse-badge.hf:hover {
    border-color: #ffcc00;
    color: #b8860b;
}

/* HuggingFace Daily Papers Section */
.hf-papers-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
}

.hf-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.hf-icon {
    font-size: 1.25rem;
}

.hf-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.hf-badge {
    font-size: 0.7rem;
    background: #ffcc00;
    color: #1a1a1a;
    padding: 0.2rem 0.5rem;
    border-radius: 1rem;
    font-weight: 600;
    margin-left: auto;
}

.hf-section-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin: 0.75rem 0 0.5rem 0;
}

/* Top Highlighted Papers Grid */
.hf-papers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
}

.hf-paper-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.75rem;
    text-decoration: none;
    transition: all 0.2s ease;
    display: block;
}

.hf-paper-card:hover {
    background: var(--bg-hover);
    border-color: #ffcc00;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.hf-paper-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hf-paper-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.hf-upvotes {
    font-size: 0.75rem;
    font-weight: 600;
    color: #ff6600;
}

.hf-paper-org {
    font-size: 0.7rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
}

.hf-paper-summary {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.hf-paper-bullets {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin: 0;
    padding-left: 1rem;
}

.hf-paper-bullets li {
    margin-bottom: 0.25rem;
}

/* Tags */
.hf-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.hf-tag {
    font-size: 0.7rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: 0.2rem 0.5rem;
    border-radius: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.hf-tag-count {
    font-weight: 600;
    color: var(--text-muted);
}

/* All Papers List */
.hf-all-papers-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.hf-all-paper-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.5rem;
    border-radius: 0.25rem;
    text-decoration: none;
    transition: background 0.2s ease;
}

.hf-all-paper-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
}

.hf-all-paper-item .hf-upvotes {
    font-size: 0.7rem;
    font-weight: 600;
    color: #ff6600;
    min-width: 35px;
}

.hf-all-paper-title {
    font-size: 0.8rem;
    color: var(--text-primary);
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hf-all-paper-item .hf-paper-org {
    font-size: 0.65rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 0.1rem 0.3rem;
    border-radius: 0.2rem;
    white-space: nowrap;
}

/* Trending Categories Grid */
.hf-categories-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.hf-category-chip {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 2rem;
    padding: 0.4rem 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.hf-category-chip:hover {
    border-color: #ffcc00;
    background: rgba(255, 204, 0, 0.05);
}

.hf-cat-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.hf-cat-stats {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Academia & Industry Highlights Container */
.hf-highlights-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 0.75rem;
}

.hf-highlights-column {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.75rem;
}

.hf-column-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.hf-highlights-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.hf-highlight-item {
    display: block;
    padding: 0.5rem;
    border-radius: 0.375rem;
    text-decoration: none;
    transition: background 0.2s ease;
}

.hf-highlight-item:hover {
    background: var(--bg-secondary);
}

.hf-highlight-title {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 0.25rem;
}

.hf-highlight-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.hf-highlight-meta span:first-child {
    color: #ff6600;
    font-weight: 600;
}

.hf-authors, .hf-org {
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

/* Research Institutions Section (compact layout) */
.institutions-section .group-info h3 {
    font-size: 1.3rem;
    font-weight: 700;
}

.institutions-section .group-details {
    padding: 0.75rem;
}

.institutions-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.institution-column {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    box-shadow: var(--shadow-1);
}

.institution-column-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.institution-papers-list {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.institution-paper-item {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.375rem;
    border-radius: 0.25rem;
    text-decoration: none;
    transition: background 0.2s ease;
}

.institution-paper-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-purple);
}

.institution-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-blue);
}

.institution-paper-title {
    font-size: 0.8rem;
    color: var(--text-primary);
    line-height: 1.3;
}

/* Mobile Responsive: Stack layouts vertically */
@media (max-width: 1024px) {
    .hf-papers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hf-papers-section {
        padding: 0.75rem;
    }

    .hf-papers-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .hf-paper-card {
        padding: 0.625rem;
    }

    .hf-paper-title {
        font-size: 0.8rem;
        -webkit-line-clamp: 2;
    }

    .hf-paper-summary {
        -webkit-line-clamp: 2;
    }

    .hf-highlights-container {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .hf-highlights-column {
        padding: 0.625rem;
    }

    .institutions-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .institution-column {
        padding: 0.625rem;
    }

    .hf-categories-grid {
        gap: 0.375rem;
    }

    .hf-category-chip {
        padding: 0.3rem 0.5rem;
    }

    .hf-cat-name {
        font-size: 0.75rem;
    }

    .hf-cat-stats {
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    .hf-header {
        flex-wrap: wrap;
    }

    .hf-badge {
        font-size: 0.65rem;
    }

    .hf-highlight-title {
        font-size: 0.75rem;
    }

    .hf-highlight-meta {
        font-size: 0.65rem;
    }

    .institution-name {
        font-size: 0.7rem;
    }

    .institution-paper-title {
        font-size: 0.75rem;
    }
}

/* ========================================
   Conferences Section
   ======================================== */

.conf-section-content {
    padding: 1rem 0;
}

.conf-filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.conf-filter {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-1);
}

.conf-filter:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    box-shadow: var(--shadow-2);
}

.conf-filter.active {
    background: var(--accent-purple);
    border-color: var(--accent-purple);
    color: white;
    box-shadow: var(--shadow-2);
}

.conf-month {
    margin-bottom: 1.5rem;
}

.conf-month-header {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    border-left: 3px solid var(--accent-purple);
    padding-left: 0.75rem;
}

.conf-grid,
.conf-month-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.conf-card {
    display: block;
    padding: 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-1);
}

.conf-card:hover {
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.conf-card.past {
    opacity: 0.6;
}

.conf-card.past:hover {
    opacity: 0.8;
}

.conf-badges {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.conf-type, .conf-tier {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    color: white;
    text-transform: uppercase;
}

.conf-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.conf-full-name {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.conf-details {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.conf-dates {
    color: var(--text-secondary);
    font-weight: 500;
}

.conf-location {
    color: var(--text-muted);
}

.conf-location::before {
    content: "•";
    margin-right: 0.5rem;
}

.conf-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

.conf-deadline {
    color: var(--text-muted);
}

.conf-deadline.urgent {
    color: var(--accent-red);
    font-weight: 500;
}

.conf-deadline.passed {
    color: var(--text-muted);
    text-decoration: line-through;
}

.conf-papers {
    color: var(--text-muted);
}

.conf-past-section {
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.conf-past-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 0.5rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.conf-past-header:hover {
    color: var(--text-secondary);
}

.conf-past-toggle {
    font-size: 1.2rem;
    font-weight: 300;
}

.conf-past-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.conf-past-content.expanded {
    max-height: 2000px;
    margin-top: 1rem;
}

.conf-empty {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

@media (max-width: 640px) {
    .conf-grid,
    .conf-month-grid {
        grid-template-columns: 1fr;
    }

    .conf-filters {
        justify-content: center;
    }
}

/* Twitter regional trends */
.twitter-section .region-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.twitter-section .region-tab {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
}

.twitter-section .region-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.twitter-section .region-tab.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

.twitter-section .region-panel {
    display: block;
}

.twitter-section .region-panel.hidden {
    display: none;
}

.post-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light, rgba(128, 128, 128, 0.1));
}

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

.post-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    padding: 0.15rem 0.4rem;
    background: var(--bg-tertiary, rgba(128, 128, 128, 0.1));
    border-radius: var(--radius-sm, 4px);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

.post-title {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.post-title:hover {
    color: var(--accent-blue);
    text-decoration: underline;
}

.trend-bullets {
    margin: 0.4rem 0 0 2.5rem;
    padding: 0;
    list-style: disc;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.trend-bullets li {
    margin: 0.2rem 0;
    line-height: 1.4;
}

.hidden {
    display: none !important;
}