/* ===== Tactical OS V2.6 - Cyberpunk Command Center ===== */

/* --- CSS Variables --- */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1428;
    --bg-card: #111832;
    --bg-card-hover: #161e3d;
    --border-color: #1a2340;
    --border-glow: #1e2a4a;

    --text-primary: #e8eaf0;
    --text-secondary: #8892b0;
    --text-muted: #5a6380;

    --neon-red: #ff4757;
    --neon-orange: #ff9f43;
    --neon-yellow: #feca57;
    --neon-green: #00d2d3;
    --neon-cyan: #0abde3;
    --neon-blue: #3742fa;
    --neon-purple: #a855f7;

    --neon-red-glow: rgba(255, 71, 87, 0.15);
    --neon-orange-glow: rgba(255, 159, 67, 0.15);
    --neon-yellow-glow: rgba(254, 202, 87, 0.15);
    --neon-green-glow: rgba(0, 210, 211, 0.15);
    --neon-cyan-glow: rgba(10, 189, 227, 0.15);
    --neon-purple-glow: rgba(168, 85, 247, 0.15);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --nav-height: 70px;
    --header-height: 56px;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* --- App Container --- */
.app-container {
    position: relative;
    max-width: 100%;
    min-height: 100vh;
    overflow: hidden;
}

/* --- Ambient Glow --- */
.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: var(--neon-purple);
    top: -100px;
    right: -100px;
    animation: glowPulse 8s ease-in-out infinite;
}

.glow-2 {
    width: 350px;
    height: 350px;
    background: var(--neon-cyan);
    bottom: 20%;
    left: -100px;
    animation: glowPulse 10s ease-in-out infinite reverse;
}

.glow-3 {
    width: 300px;
    height: 300px;
    background: var(--neon-green);
    top: 40%;
    right: -80px;
    animation: glowPulse 12s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.06; transform: scale(1); }
    50% { opacity: 0.12; transform: scale(1.1); }
}

/* --- Header --- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    height: var(--header-height);
    background: rgba(10, 14, 26, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.title {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-primary);
}

.title .version {
    color: var(--neon-green);
    font-size: 0.8rem;
}

.subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.date-display {
    color: var(--neon-green);
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.live-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--neon-green);
    letter-spacing: 2px;
}

.live-dot {
    width: 8px;
    height: 8px;
    background: var(--neon-green);
    border-radius: 50%;
    animation: livePulse 2s ease-in-out infinite;
    box-shadow: 0 0 8px var(--neon-green);
}

@keyframes livePulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--neon-green); }
    50% { opacity: 0.4; box-shadow: 0 0 2px var(--neon-green); }
}

/* --- Main Content --- */
.main-content {
    position: relative;
    z-index: 1;
    padding-bottom: calc(var(--nav-height) + 16px);
}

/* --- Page System --- */
.page {
    display: none;
    padding: 16px;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Page Header Bar --- */
.page-header-bar {
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 4px;
}

.page-title.green { color: var(--neon-green); }
.page-title.cyan { color: var(--neon-cyan); }
.page-title.purple { color: var(--neon-purple); }
.page-title.orange { color: var(--neon-orange); }

.page-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --- Data Cards --- */
.data-cards-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}

.data-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s, transform 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

a.data-card {
    text-decoration: none;
    color: inherit;
}

.data-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-glow);
}

.data-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
}

.card-vix { border-color: rgba(255, 71, 87, 0.25); }
.card-vix::before { background: linear-gradient(90deg, var(--neon-red), transparent); }
.card-fng { border-color: rgba(255, 159, 67, 0.25); }
.card-fng::before { background: linear-gradient(90deg, var(--neon-orange), transparent); }
.card-usdtwd { border-color: rgba(0, 210, 211, 0.25); }
.card-usdtwd::before { background: linear-gradient(90deg, var(--neon-green), transparent); }

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.card-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.card-vix .card-label { color: var(--neon-red); }
.card-fng .card-label { color: var(--neon-orange); }
.card-usdtwd .card-label { color: var(--neon-green); }

.card-icon {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.card-value {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.card-change {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
}

.card-change.positive { color: var(--neon-green); }
.card-change.negative { color: var(--neon-red); }
.card-change.neutral { color: var(--text-muted); }

/* --- Section Cards --- */
.section-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s;
}

.section-card:hover {
    border-color: var(--border-glow);
}

.section-border {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
}

.border-green { background: linear-gradient(90deg, var(--neon-green), transparent); }
.border-yellow { background: linear-gradient(90deg, var(--neon-yellow), transparent); }
.border-orange { background: linear-gradient(90deg, var(--neon-orange), transparent); }
.border-cyan { background: linear-gradient(90deg, var(--neon-cyan), transparent); }
.border-purple { background: linear-gradient(90deg, var(--neon-purple), transparent); }
.border-red { background: linear-gradient(90deg, var(--neon-red), transparent); }
.border-multi { background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-green)); }

.section-header {
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.section-title.green { color: var(--neon-green); }
.section-title.yellow { color: var(--neon-yellow); }
.section-title.orange { color: var(--neon-orange); }
.section-title.cyan { color: var(--neon-cyan); }
.section-title.purple { color: var(--neon-purple); }
.section-title.red { color: var(--neon-red); }

/* --- Clickable Cards --- */
a.section-card {
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.clickable-card {
    cursor: pointer;
    transition: border-color 0.3s, transform 0.2s;
}

.clickable-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-glow);
}

/* Resource link cards */
a.resource-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

a.resource-link:hover {
    background: var(--bg-card-hover);
}

.resource-info-card {
    opacity: 0.7;
}

/* --- Macro Terminal Preview --- */
.macro-terminal {
    cursor: pointer;
}

.macro-data {
    display: flex;
    align-items: center;
    gap: 16px;
}

.macro-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.macro-label {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.macro-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--neon-green);
}

.macro-divider {
    width: 1px;
    height: 30px;
    background: var(--border-color);
}

.macro-arrow {
    margin-left: auto;
    font-size: 1.5rem;
    color: var(--neon-green);
    cursor: pointer;
    transition: transform 0.2s;
}

.macro-arrow:hover {
    transform: translateX(4px);
}

/* --- Motivation Card --- */
.motivation-content {
    padding: 4px 0;
}

.quote {
    font-size: 0.9rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 8px;
}

.quote-zh {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 8px;
}

.quote-author {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neon-yellow);
    letter-spacing: 1px;
}

/* --- History Card --- */
.history-main {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.history-year {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--neon-orange);
    line-height: 1;
    min-width: 60px;
}

.history-event {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 4px;
}

.history-event-zh {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* --- Trivia Card --- */
.trivia-content {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.trivia-fact {
    font-size: 0.85rem;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 4px;
}

.trivia-fact-zh {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
}

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

.filter-btn {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 8px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-card);
    color: var(--text-muted);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
}

.filter-btn:hover {
    border-color: var(--neon-green);
    color: var(--text-secondary);
}

.filter-btn.active {
    background: rgba(0, 210, 211, 0.1);
    border-color: var(--neon-green);
    color: var(--neon-green);
}

/* --- Video Cards --- */
.video-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.video-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
}

.video-card.channel-nicolas::before { background: var(--neon-green); }
.video-card.channel-alan::before { background: var(--neon-orange); }
.video-card.channel-alex::before { background: var(--neon-cyan); }

.video-card:hover {
    border-color: var(--border-glow);
    background: var(--bg-card-hover);
    transform: translateY(-1px);
}

.video-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
    gap: 8px;
}

.video-date {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    white-space: nowrap;
}

.video-channel-tag {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.tag-nicolas {
    background: rgba(0, 210, 211, 0.15);
    color: var(--neon-green);
    border: 1px solid rgba(0, 210, 211, 0.3);
}

.tag-alan {
    background: rgba(255, 159, 67, 0.15);
    color: var(--neon-orange);
    border: 1px solid rgba(255, 159, 67, 0.3);
}

.tag-alex {
    background: rgba(10, 189, 227, 0.15);
    color: var(--neon-cyan);
    border: 1px solid rgba(10, 189, 227, 0.3);
}

.video-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 8px;
}

.video-overview {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.video-tickers {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.ticker-badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    background: rgba(168, 85, 247, 0.12);
    color: var(--neon-purple);
    border: 1px solid rgba(168, 85, 247, 0.25);
}

.video-yt-link {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--neon-red);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: opacity 0.2s;
}

.video-yt-link:hover {
    opacity: 0.8;
}

/* --- Modal --- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    align-items: flex-end;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px 16px 0 0;
    width: 100%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 20px 20px 12px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-secondary);
    z-index: 1;
}

.modal-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    flex: 1;
    padding-right: 12px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--neon-red);
}

.modal-body {
    padding: 16px 20px 24px;
}

.modal-section {
    margin-bottom: 16px;
}

.modal-section-title {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--neon-green);
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.modal-section-title.orange { color: var(--neon-orange); }
.modal-section-title.cyan { color: var(--neon-cyan); }
.modal-section-title.purple { color: var(--neon-purple); }
.modal-section-title.yellow { color: var(--neon-yellow); }

.modal-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-key-points {
    list-style: none;
    padding: 0;
}

.modal-key-points li {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding: 6px 0 6px 16px;
    position: relative;
    border-bottom: 1px solid rgba(26, 35, 64, 0.5);
}

.modal-key-points li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--neon-green);
}

.modal-key-points li:last-child {
    border-bottom: none;
}

.modal-trend-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.modal-trend-item {
    background: rgba(15, 20, 40, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 12px;
}

.modal-trend-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.modal-trend-text {
    font-size: 0.8rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.modal-tickers-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.modal-ticker {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(15, 20, 40, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 6px 10px;
}

.modal-ticker-symbol {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-ticker-change {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
}

.modal-ticker-change.up { color: var(--neon-green); }
.modal-ticker-change.down { color: var(--neon-red); }

.modal-yt-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 71, 87, 0.12);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: 8px;
    padding: 10px 16px;
    color: var(--neon-red);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    letter-spacing: 1px;
}

.modal-yt-btn:hover {
    background: rgba(255, 71, 87, 0.2);
}

/* --- Wealth Page --- */
.wealth-section {
    margin-bottom: 12px;
}

.resource-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.resource-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: rgba(15, 20, 40, 0.4);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.resource-card:hover {
    background: rgba(15, 20, 40, 0.7);
    border-color: var(--border-glow);
}

.resource-icon {
    font-size: 1.5rem;
    min-width: 36px;
    text-align: center;
}

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

.resource-info h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.resource-info p {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.resource-arrow {
    font-size: 1.2rem;
    color: var(--text-muted);
    transition: transform 0.2s;
}

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

.resource-badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(168, 85, 247, 0.12);
    color: var(--neon-purple);
    border: 1px solid rgba(168, 85, 247, 0.25);
    white-space: nowrap;
}

/* --- Knowledge Expand --- */
.knowledge-expand {
    display: none;
    padding: 12px 16px;
    background: rgba(10, 14, 26, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-top: -4px;
    margin-bottom: 4px;
}

.knowledge-expand.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.knowledge-expand pre {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
}

/* --- Bottom Navigation --- */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    padding: 0 0 env(safe-area-inset-bottom, 0);
}

.nav-items {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: var(--nav-height);
    max-width: 500px;
    margin: 0 auto;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    cursor: pointer;
    padding: 8px 16px;
    transition: color 0.2s;
    position: relative;
}

.nav-icon {
    width: 20px;
    height: 20px;
    stroke-width: 1.5;
}

.nav-item:hover {
    color: var(--text-secondary);
}

.nav-item.active {
    color: var(--neon-green);
}

.nav-dot {
    display: none;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--neon-green);
    box-shadow: 0 0 6px var(--neon-green);
}

.nav-item.active .nav-dot {
    display: block;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- Responsive --- */
@media (min-width: 768px) {
    .main-content {
        max-width: 700px;
        margin: 0 auto;
    }

    .data-cards-row {
        gap: 16px;
    }

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

    .video-card {
        padding: 20px;
    }

    .modal-content {
        border-radius: 16px;
        margin-bottom: 40px;
        max-height: 80vh;
    }

    .modal-overlay {
        align-items: center;
    }
}

@media (max-width: 400px) {
    .card-value {
        font-size: 1.1rem;
    }

    .data-cards-row {
        gap: 6px;
    }

    .data-card {
        padding: 10px;
    }

    .video-title {
        font-size: 0.82rem;
    }
}

@media (min-width: 1024px) {
    .main-content {
        max-width: 800px;
    }

    .video-list {
        gap: 16px;
    }

    .modal-trend-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* --- Utility --- */
.hidden {
    display: none !important;
}

.text-green { color: var(--neon-green); }
.text-cyan { color: var(--neon-cyan); }
.text-orange { color: var(--neon-orange); }
.text-purple { color: var(--neon-purple); }
.text-red { color: var(--neon-red); }
.text-yellow { color: var(--neon-yellow); }

/* --- Loading Skeleton --- */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 0.85rem;
}