/* ===== CSS VARIABLES ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #161620;
    --bg-hover: #1e1e2e;
    --bg-elevated: #222230;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --accent-soft: rgba(99, 102, 241, 0.1);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --shadow-glow-lg: 0 0 40px var(--accent-glow);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --tap-target: 44px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-top: env(safe-area-inset-top, 0px);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: var(--bg-primary); color: var(--text-primary); min-height: 100dvh;
    min-height: calc(var(--vh, 1vh) * 100); line-height: 1.6; overflow-x: hidden;
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
    touch-action: manipulation; accent-color: var(--accent);
}

.bg-mesh {
    position: fixed; inset: 0; z-index: -1; opacity: 0.4;
    background: radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    animation: meshPulse 8s ease-in-out infinite alternate; pointer-events: none; will-change: opacity, transform;
}
@keyframes meshPulse { 0% { opacity: 0.3; transform: scale(1); } 100% { opacity: 0.5; transform: scale(1.05); } }

.bg-grid { position: fixed; inset: 0; z-index: -1; opacity: 0.03;
    background-image: linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px; pointer-events: none;
}
.bg-particles { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; contain: strict; }
.particle { position: absolute; border-radius: 50%; opacity: 0; animation: particleFloat linear infinite; will-change: transform, opacity; }
@keyframes particleFloat { 0% { opacity: 0; transform: translateY(100vh) scale(0); } 10% { opacity: 0.6; } 90% { opacity: 0.6; } 100% { opacity: 0; transform: translateY(-10vh) scale(1); } }

.app-container { max-width: 1200px; margin: 0 auto; padding: 24px; min-height: 100dvh; min-height: calc(var(--vh, 1vh) * 100); display: flex; flex-direction: column; }

.header { text-align: center; padding: 40px 0 32px; animation: fadeInDown 0.6s ease-out; }
.logo { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.logo-icon { width: 48px; height: 48px; background: linear-gradient(135deg, var(--accent), #8b5cf6); border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 24px; box-shadow: var(--shadow-glow); animation: logoPulse 2s ease-in-out infinite; flex-shrink: 0; will-change: box-shadow; }
@keyframes logoPulse { 0%, 100% { box-shadow: var(--shadow-glow); } 50% { box-shadow: var(--shadow-glow-lg); } }
.logo-text { font-size: clamp(20px, 5vw, 28px); font-weight: 700; background: linear-gradient(135deg, var(--text-primary), var(--accent-hover)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; letter-spacing: -0.5px; }
.header-subtitle { color: var(--text-secondary); font-size: clamp(13px, 3vw, 16px); max-width: 500px; margin: 0 auto; padding: 0 16px; }

.input-section { max-width: 800px; margin: 0 auto 32px; width: 100%; animation: fadeInUp 0.6s ease-out 0.1s both; padding: 0 4px; }
.input-wrapper { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 6px; display: flex; gap: 8px; transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base); box-shadow: var(--shadow-md); position: relative; }
.input-wrapper:focus-within { border-color: var(--accent); box-shadow: var(--shadow-glow), var(--shadow-md); transform: translateY(-1px); }
.input-icon { display: flex; align-items: center; justify-content: center; width: 44px; color: var(--text-muted); font-size: 18px; transition: color var(--transition-fast); flex-shrink: 0; }
.input-wrapper:focus-within .input-icon { color: var(--accent); }
.url-input { flex: 1; background: transparent; border: none; outline: none; color: var(--text-primary); font-size: 15px; padding: 14px 0; font-family: inherit; min-width: 0; }
.url-input::placeholder { color: var(--text-muted); }
.input-hints { display: flex; gap: 20px; justify-content: center; margin-top: 12px; padding: 0 8px; flex-wrap: wrap; }
.hint-item { font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; transition: color var(--transition-fast); }
.hint-item i { font-size: 11px; }

.btn-primary { background: linear-gradient(135deg, var(--accent), #8b5cf6); color: white; border: none; padding: 14px 32px; border-radius: var(--radius-lg); font-size: 15px; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; gap: 8px; transition: transform var(--transition-base), box-shadow var(--transition-base); white-space: nowrap; position: relative; overflow: hidden; min-height: var(--tap-target); justify-content: center; flex-shrink: 0; will-change: transform; }
.btn-primary::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, transparent, rgba(255,255,255,0.2), transparent); transform: translateX(-100%); transition: transform 0.5s ease; }
.btn-primary:hover::before { transform: translateX(100%); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow), var(--shadow-md); }
.btn-primary:active { transform: translateY(0) scale(0.98); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border); padding: 10px 20px; border-radius: var(--radius-md); font-size: 14px; font-weight: 500; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast); text-decoration: none; position: relative; overflow: hidden; min-height: var(--tap-target); justify-content: center; will-change: transform; }
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn-secondary:active { transform: translateY(0) scale(0.98); }
.btn-load-more { padding: 12px 32px; gap: 8px; }
.btn-load-more i { transition: transform var(--transition-fast); }
.btn-load-more:hover i { transform: translateY(2px); }
.load-more-wrapper { text-align: center; margin-top: 24px; }

.loading-container { display: none; text-align: center; padding: 60px 20px; animation: fadeIn 0.3s ease; }
.loading-container.active { display: block; }
.loading-animation { position: relative; width: 80px; height: 80px; margin: 0 auto 24px; }
.spinner-ring { position: absolute; inset: 0; border: 3px solid transparent; border-top-color: var(--accent); border-radius: 50%; animation: spin 1s linear infinite; will-change: transform; }
.spinner-ring--2 { inset: 8px; border-top-color: #8b5cf6; animation: spin 1.5s linear infinite reverse; }
.spinner-ring--3 { inset: 16px; border-top-color: #a78bfa; animation: spin 2s linear infinite; }
.loading-text { color: var(--text-secondary); font-size: 16px; font-weight: 500; }
.loading-subtext { color: var(--text-muted); font-size: 13px; margin-top: 8px; }
.loading-progress { width: min(200px, 60vw); height: 3px; background: var(--bg-tertiary); border-radius: var(--radius-full); margin: 20px auto 0; overflow: hidden; }
.loading-progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), #8b5cf6); border-radius: var(--radius-full); transition: width 0.3s ease; animation: loadingProgress 2s ease-in-out infinite; }
@keyframes loadingProgress { 0% { width: 0%; opacity: 1; } 50% { width: 70%; opacity: 1; } 100% { width: 100%; opacity: 0; } }

.error-container { display: none; background: rgba(239, 68, 68, 0.08); border: 1px solid rgba(239, 68, 68, 0.2); border-radius: var(--radius-md); padding: 20px 24px; margin: 20px auto; max-width: 800px; animation: shake 0.5s ease; align-items: center; gap: 12px; position: relative; }
.error-container.active { display: flex; }
.error-icon { font-size: 24px; flex-shrink: 0; color: var(--error); }
.error-title { font-weight: 600; color: var(--error); margin-bottom: 4px; }
.error-message { color: var(--text-secondary); font-size: 14px; }
.error-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 16px; padding: 4px; margin-inline-start: auto; transition: color var(--transition-fast), background var(--transition-fast); min-width: var(--tap-target); min-height: var(--tap-target); display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); }
.error-close:hover { color: var(--error); background: rgba(239,68,68,0.1); }

.video-card { display: none; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-xl); overflow: hidden; margin-top: 24px; animation: fadeInUp 0.5s ease-out; box-shadow: var(--shadow-lg); contain: layout style paint; }
.video-card.active { display: block; }

.player-wrapper { position: relative; background: #000; aspect-ratio: 16/9; overflow: hidden; user-select: none; -webkit-user-select: none; touch-action: none; contain: layout style paint; }
video { width: 100%; height: 100%; display: block; object-fit: contain; }

.player-loader { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; background: rgba(0,0,0,0.4); z-index: 15; }
.player-loader.active { display: flex; }
.player-loader-spinner { width: 48px; height: 48px; border: 3px solid rgba(255,255,255,0.1); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; will-change: transform; }

.big-play-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 80px; height: 80px; display: flex; align-items: center; justify-content: center; color: white; font-size: 32px; cursor: pointer; opacity: 0; transition: opacity var(--transition-base); z-index: 10; pointer-events: none; }
.player-wrapper.paused .big-play-btn { opacity: 1; pointer-events: all; }
.big-play-ring { position: absolute; inset: 0; background: rgba(99, 102, 241, 0.9); border-radius: 50%; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base); will-change: transform; }
.big-play-btn:hover .big-play-ring { transform: scale(1.1); background: var(--accent); box-shadow: 0 0 40px var(--accent-glow); }
.big-play-btn:active .big-play-ring { transform: scale(0.95); }
.big-play-btn i { position: relative; z-index: 1; margin-inline-start: 4px; }

.close-player-btn { position: absolute; top: 16px; inset-inline-end: 16px; background: rgba(0, 0, 0, 0.5); border: 1px solid rgba(255, 255, 255, 0.1); color: white; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 20; font-size: 18px; transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); opacity: 0; pointer-events: none; }
.player-wrapper:hover .close-player-btn, .player-wrapper.paused .close-player-btn { opacity: 1; pointer-events: all; }
.close-player-btn:hover { background: rgba(239, 68, 68, 0.9); border-color: rgba(239, 68, 68, 1); transform: scale(1.1); box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4); }
.close-player-btn:active { transform: scale(0.95); }

.player-overlay { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: space-between; padding: 16px; background: linear-gradient(transparent 40%, rgba(0,0,0,0.7) 100%); opacity: 0; transition: opacity var(--transition-base); pointer-events: none; z-index: 5; }
.player-wrapper:hover .player-overlay, .player-wrapper.paused .player-overlay, .player-overlay.active { opacity: 1; pointer-events: all; }

.top-bar { display: flex; align-items: center; justify-content: center; padding: 8px 4px; transform: translateY(-10px); opacity: 0; transition: transform var(--transition-base), opacity var(--transition-base); pointer-events: none; }
.player-wrapper:hover .top-bar, .player-wrapper.paused .top-bar { transform: translateY(0); opacity: 1; }
.top-bar-title { font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.9); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 80%; text-align: center; text-shadow: 0 1px 4px rgba(0,0,0,0.5); }

.center-controls { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); display: flex; align-items: center; gap: 24px; opacity: 0; transition: opacity var(--transition-base); pointer-events: none; }
.player-wrapper.paused .center-controls { opacity: 1; pointer-events: all; }
.center-btn { background: rgba(0,0,0,0.5); border: 1px solid rgba(255,255,255,0.1); color: white; width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 18px; transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); min-width: var(--tap-target); min-height: var(--tap-target); will-change: transform; }
.center-btn:hover { background: rgba(99, 102, 241, 0.8); border-color: var(--accent); transform: scale(1.1); }
.center-btn:active { transform: scale(0.95); }
.center-btn--play { width: 64px; height: 64px; font-size: 24px; background: rgba(99, 102, 241, 0.9); border-color: var(--accent); }
.center-btn--play:hover { background: var(--accent); box-shadow: 0 0 30px var(--accent-glow); }

.progress-container { position: relative; width: 100%; height: 32px; margin-bottom: 4px; cursor: pointer; display: flex; align-items: center; padding: 12px 0; margin-top: auto; touch-action: none; }
.progress-bar { width: 100%; height: 6px; background: rgba(255,255,255,0.2); border-radius: var(--radius-full); position: relative; transition: height var(--transition-fast); overflow: visible; }
.progress-container:hover .progress-bar { height: 8px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--accent), #8b5cf6); border-radius: var(--radius-full); width: 0%; position: relative; transition: width 0.1s linear; }
.progress-handle { position: absolute; inset-inline-end: -10px; top: 50%; transform: translateY(-50%) scale(0); width: 20px; height: 20px; background: white; border-radius: 50%; box-shadow: 0 0 10px rgba(0,0,0,0.5), 0 0 0 4px var(--accent-glow); transition: transform var(--transition-fast); will-change: transform; }
.progress-container:hover .progress-handle, .progress-container.dragging .progress-handle { transform: translateY(-50%) scale(1); }
.progress-buffered { position: absolute; top: 0; inset-inline-start: 0; height: 100%; background: rgba(255,255,255,0.15); border-radius: var(--radius-full); width: 0%; pointer-events: none; }
.progress-tooltip { position: absolute; top: -44px; transform: translateX(-50%); background: var(--bg-secondary); padding: 6px 12px; border-radius: var(--radius-sm); font-size: 12px; opacity: 0; border: 1px solid var(--border); pointer-events: none; color: var(--text-primary); font-weight: 500; white-space: nowrap; transition: opacity var(--transition-fast); box-shadow: var(--shadow-md); }
.progress-container:hover .progress-tooltip, .progress-container.dragging .progress-tooltip { opacity: 1; }
.progress-chapters { position: absolute; top: 0; inset-inline-start: 0; inset-inline-end: 0; height: 100%; pointer-events: none; }
.chapter-marker { position: absolute; top: 0; bottom: 0; width: 2px; background: rgba(255,255,255,0.3); transition: background var(--transition-fast); }
.chapter-marker:hover { background: var(--accent); }

.controls-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 0 4px; min-height: var(--tap-target); }
.controls-left, .controls-right { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.control-btn { background: none; border: none; color: white; font-size: 16px; cursor: pointer; padding: 8px; border-radius: var(--radius-sm); transition: background var(--transition-fast), transform var(--transition-fast); display: flex; align-items: center; justify-content: center; width: var(--tap-target); height: var(--tap-target); position: relative; min-width: var(--tap-target); min-height: var(--tap-target); will-change: transform; }
.control-btn:hover { background: rgba(255,255,255,0.15); transform: scale(1.1); }
.control-btn:active { transform: scale(0.95); }
.control-btn.skip-btn { font-size: 14px; }
.control-btn.skip-btn span { position: absolute; font-size: 9px; font-weight: 700; bottom: 4px; }
.control-btn.skip-btn.skip-back span { inset-inline-start: 6px; }
.control-btn.skip-btn.skip-forward span { inset-inline-end: 6px; }
.control-btn.play-btn { font-size: 18px; width: var(--tap-target); height: var(--tap-target); }
.time-display { color: rgba(255,255,255,0.9); font-size: 13px; font-family: 'Inter', ui-monospace, monospace; margin-inline-start: 8px; font-variant-numeric: tabular-nums; white-space: nowrap; }

.volume-container { display: flex; align-items: center; position: relative; }
.volume-slider-wrapper { width: 0; overflow: hidden; transition: width var(--transition-base); }
.volume-container:hover .volume-slider-wrapper, .volume-container.active .volume-slider-wrapper { width: 80px; }
.volume-track { width: 80px; height: 4px; background: rgba(255,255,255,0.3); border-radius: var(--radius-full); position: relative; cursor: pointer; margin: 0 8px; }
.volume-fill { height: 100%; width: 100%; background: white; border-radius: var(--radius-full); pointer-events: none; }
.volume-handle { position: absolute; inset-inline-end: -6px; top: 50%; transform: translateY(-50%); width: 12px; height: 12px; background: white; border-radius: 50%; box-shadow: 0 0 6px rgba(0,0,0,0.3); pointer-events: none; }

.player-quality-badge, .speed-indicator { color: rgba(255,255,255,0.9); font-size: 12px; font-weight: 600; padding: 4px 8px; border-radius: 4px; cursor: pointer; transition: background var(--transition-fast); white-space: nowrap; }
.player-quality-badge { background: rgba(99, 102, 241, 0.8); }
.player-quality-badge:hover, .speed-indicator:hover { background: var(--accent); }

.settings-panel { position: absolute; bottom: 60px; inset-inline-end: 16px; background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px; width: 240px; z-index: 30; opacity: 0; pointer-events: none; transform: translateY(10px); transition: opacity var(--transition-fast), transform var(--transition-fast); box-shadow: var(--shadow-lg); max-height: 60vh; overflow-y: auto; overscroll-behavior: contain; }
.settings-panel.active { opacity: 1; pointer-events: all; transform: translateY(0); }
.settings-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font-weight: 600; font-size: 14px; }
.settings-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 14px; transition: color var(--transition-fast), background var(--transition-fast); min-width: var(--tap-target); min-height: var(--tap-target); display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); }
.settings-close:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.settings-section { margin-bottom: 16px; }
.settings-section:last-child { margin-bottom: 0; }
.settings-label { font-size: 12px; color: var(--text-muted); margin-bottom: 10px; font-weight: 500; }
.speed-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.speed-option { background: var(--bg-tertiary); border: 1px solid var(--border); color: var(--text-secondary); padding: 6px 4px; border-radius: var(--radius-sm); font-size: 12px; cursor: pointer; transition: border-color var(--transition-fast), color var(--transition-fast); text-align: center; min-height: var(--tap-target); display: flex; align-items: center; justify-content: center; }
.speed-option:hover { border-color: var(--accent); color: var(--text-primary); }
.speed-option.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-hover); font-weight: 600; }

.toggle-switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; cursor: pointer; inset: 0; background: var(--bg-tertiary); border-radius: var(--radius-full); transition: background var(--transition-fast), border-color var(--transition-fast); border: 1px solid var(--border); }
.toggle-slider::before { content: ''; position: absolute; height: 18px; width: 18px; inset-inline-start: 2px; bottom: 2px; background: white; border-radius: 50%; transition: transform var(--transition-fast); box-shadow: var(--shadow-sm); }
.toggle-switch input:checked + .toggle-slider { background: var(--accent); border-color: var(--accent); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); }

.video-info { padding: 24px; }
.info-header { display: flex; gap: 20px; margin-bottom: 20px; }
.poster-wrapper { position: relative; width: 160px; flex-shrink: 0; border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 16/9; }
.poster-thumb { width: 100%; height: 100%; object-fit: contain; background: #000; display: block; }
.poster-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity var(--transition-fast); cursor: pointer; }
.poster-wrapper:hover .poster-overlay { opacity: 1; }
.poster-overlay i { font-size: 32px; color: white; }
.info-text { flex: 1; min-width: 0; }
.video-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; line-height: 1.3; overflow-wrap: break-word; word-break: break-word; }
.video-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 10px; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; color: var(--text-secondary); font-size: 14px; }
.meta-badge.quality { padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; background: rgba(99, 102, 241, 0.15); border: 1px solid var(--accent); color: var(--accent-hover); }
.meta-badge.duration { padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; background: rgba(16, 185, 129, 0.15); border: 1px solid var(--success); color: var(--success); }
.video-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.video-tag { font-size: 11px; color: var(--text-muted); background: var(--bg-tertiary); padding: 3px 10px; border-radius: var(--radius-full); border: 1px solid var(--border); }

.quality-section { margin-top: 20px; }
.section-label { font-size: 13px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; margin-bottom: 12px; display: flex; justify-content: space-between; align-items: center; }
.section-sublabel { font-size: 11px; color: var(--text-muted); text-transform: none; font-weight: 400; }
.quality-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
.quality-option { position: relative; background: var(--bg-tertiary); border: 2px solid transparent; border-radius: var(--radius-md); padding: 14px 10px; cursor: pointer; transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast); text-align: center; min-height: var(--tap-target); display: flex; flex-direction: column; align-items: center; justify-content: center; will-change: transform; }
.quality-option:hover { background: var(--bg-hover); border-color: var(--border-hover); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.quality-option.active { border-color: var(--accent); background: var(--accent-soft); box-shadow: 0 0 0 1px var(--accent-glow); }
.quality-option .q-label { font-weight: 600; font-size: 14px; margin-bottom: 4px; }
.quality-option .q-source { font-size: 11px; color: var(--text-muted); }
.quality-option .q-badge { position: absolute; top: -1px; inset-inline-end: 8px; background: var(--accent); color: white; font-size: 10px; font-weight: 700; padding: 2px 6px; border-radius: 0 0 6px 6px; }
.action-bar { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 16px; border-top: 1px solid var(--border); margin-top: 20px; }

.history-section { animation: fadeInUp 0.6s ease-out 0.2s both; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid rgba(255, 255, 255, 0.05); flex-wrap: wrap; gap: 12px; }
.section-title { font-size: 18px; font-weight: 600; display: flex; align-items: center; gap: 8px; line-height: 1; }
.section-title i { color: var(--accent); }
.btn-clear { background: rgba(239, 68, 68, 0.1); color: var(--error); border: 1px solid rgba(239, 68, 68, 0.2); padding: 6px 14px; border-radius: 20px; font-size: 12px; font-weight: 600; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px; line-height: 1; align-self: center; transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast); min-height: var(--tap-target); }
.btn-clear:hover { background: rgba(239, 68, 68, 0.2); border-color: rgba(239, 68, 68, 0.4); transform: translateY(-1px); }
.btn-clear:active { transform: scale(0.98); }
.btn-clear i { display: flex; align-items: center; font-size: 11px; }

.feed-tabs { display: flex; gap: 4px; background: var(--bg-tertiary); padding: 4px; border-radius: var(--radius-full); flex-shrink: 0; }
.feed-tab { background: none; border: none; color: var(--text-muted); padding: 6px 16px; border-radius: var(--radius-full); font-size: 13px; font-weight: 500; cursor: pointer; transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast); min-height: var(--tap-target); white-space: nowrap; }
.feed-tab:hover { color: var(--text-secondary); }
.feed-tab.active { background: var(--accent-soft); color: var(--accent-hover); box-shadow: var(--shadow-sm); }

.history-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.community-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.history-item, .community-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast); cursor: pointer; contain: layout style; }
.history-item { display: flex; gap: 12px; align-items: center; padding: 12px; }
.community-card { display: flex; flex-direction: column; }
.history-item:hover, .community-card:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.history-thumb { width: 90px; aspect-ratio: 16/9; object-fit: contain; background: #000; border-radius: var(--radius-sm); flex-shrink: 0; }
.history-info { flex: 1; min-width: 0; }
.history-title { font-size: 14px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.history-delete { color: var(--text-muted); padding: 4px; opacity: 0; transition: opacity 0.2s, color var(--transition-fast), background var(--transition-fast); background: none; border: none; cursor: pointer; font-size: 14px; min-width: var(--tap-target); min-height: var(--tap-target); display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); flex-shrink: 0; }
.history-item:hover .history-delete { opacity: 1; }
.history-delete:hover { color: var(--error); background: rgba(239,68,68,0.1); }

.community-thumb-wrapper { position: relative; width: 100%; aspect-ratio: 16/9; background: #000; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.community-thumb { width: 100%; height: 100%; object-fit: contain; transition: transform var(--transition-slow); will-change: transform; }
.community-card:hover .community-thumb { transform: scale(1.05); }
.community-play-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.3); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity var(--transition-fast); }
.community-card:hover .community-play-overlay { opacity: 1; }
.community-play-overlay i { font-size: 40px; color: white; text-shadow: 0 4px 8px rgba(0,0,0,0.5); transition: transform var(--transition-fast); will-change: transform; }
.community-card:hover .community-play-overlay i { transform: scale(1.1); }
.community-info { padding: 14px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.community-title { font-size: 14px; font-weight: 600; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
.community-stats { display: flex; justify-content: space-between; color: var(--text-muted); font-size: 12px; margin-top: auto; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.05); }
.like-btn { background: var(--bg-tertiary); border: none; color: var(--text-muted); padding: 6px 10px; border-radius: 20px; font-size: 12px; cursor: pointer; transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast); display: flex; gap: 6px; align-items: center; min-height: var(--tap-target); will-change: transform; }
.like-btn:hover, .like-btn.liked { color: #ef4444; background: rgba(239, 68, 68, 0.1); }
.like-btn.liked { animation: heartBeat 0.3s ease; }
@keyframes heartBeat { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.2); } }

.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px); z-index: 9999; display: none; align-items: center; justify-content: center; padding: 20px; }
.modal-overlay.active { display: flex; }
.modal { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius-xl); max-width: 500px; width: 100%; max-height: 80vh; display: flex; flex-direction: column; animation: scaleIn 0.2s ease; box-shadow: var(--shadow-lg); overflow: hidden; }
.modal-header { padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
.modal-title { display: flex; align-items: center; gap: 8px; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 20px; cursor: pointer; transition: color var(--transition-fast), background var(--transition-fast); width: var(--tap-target); height: var(--tap-target); display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); }
.modal-close:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.modal-body { padding: 20px; overflow-y: auto; -webkit-overflow-scrolling: touch; overscroll-behavior: contain; }
.shortcut-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); align-items: center; gap: 12px; }
.shortcut-row:last-child { border-bottom: none; }
.shortcut-row span { color: var(--text-secondary); font-size: 14px; }
.key { background: var(--bg-tertiary); border: 1px solid var(--border); padding: 4px 10px; border-radius: 6px; font-size: 13px; font-family: ui-monospace, SFMono-Regular, 'SF Mono', Consolas, monospace; color: var(--text-primary); box-shadow: 0 2px 0 var(--border); white-space: nowrap; }

.toast-container { position: fixed; bottom: max(24px, var(--safe-bottom)); left: 50%; transform: translateX(-50%); z-index: 10000; display: flex; flex-direction: column; gap: 8px; width: calc(100% - 32px); max-width: 400px; pointer-events: none; }
.toast { background: var(--bg-secondary); border: 1px solid var(--border); padding: 14px 24px; border-radius: var(--radius-lg); font-size: 14px; font-weight: 500; display: flex; align-items: center; gap: 10px; box-shadow: var(--shadow-lg); animation: slideUp 0.3s ease; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); min-width: 280px; pointer-events: auto; width: 100%; }
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--error); }
.toast.warning { border-color: var(--warning); }
.toast.info { border-color: var(--info); }

.footer { text-align: center; padding: 40px 20px 20px; color: var(--text-muted); font-size: 13px; margin-top: auto; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px) translateX(-50%); } to { opacity: 1; transform: translateY(0) translateX(-50%); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-10px); } 75% { transform: translateX(10px); } }

@media (max-width: 1024px) {
    .controls-row { flex-wrap: wrap; justify-content: center; gap: 4px; }
    .controls-left, .controls-right { gap: 2px; }
    .volume-container .volume-slider-wrapper { width: 80px; }
    .community-grid { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

@media (max-width: 768px) {
    :root { --tap-target: 48px; }
    .app-container { padding: 12px; }
    .header { padding: 24px 0 20px; }
    .logo-icon { width: 40px; height: 40px; font-size: 20px; }
    .input-wrapper { flex-direction: column; padding: 12px; gap: 10px; }
    .input-icon { display: none; }
    .url-input { padding: 10px 4px; font-size: 16px; }
    .btn-primary { width: 100%; justify-content: center; padding: 14px; }
    .input-hints { gap: 12px; font-size: 11px; }
    .player-wrapper { aspect-ratio: 16/9; }
    .player-overlay { padding: 10px 8px 12px; }
    .big-play-btn { width: 64px; height: 64px; font-size: 24px; }
    .center-btn { width: 44px; height: 44px; font-size: 16px; }
    .center-btn--play { width: 56px; height: 56px; font-size: 20px; }
    .control-btn { width: var(--tap-target); height: var(--tap-target); font-size: 18px; padding: 10px; }
    .control-btn.play-btn { font-size: 18px; width: var(--tap-target); height: var(--tap-target); }
    .control-btn.skip-btn span { display: none; }
    .progress-container { height: 28px; padding: 10px 0; }
    .progress-bar { height: 5px; }
    .progress-container:hover .progress-bar { height: 6px; }
    .progress-handle { width: 18px; height: 18px; inset-inline-end: -9px; }
    .time-display { font-size: 11px; }
    .top-bar-title { font-size: 12px; max-width: 75%; }
    .close-player-btn { width: 40px; height: 40px; top: 8px; inset-inline-end: 8px; opacity: 1; pointer-events: all; background: rgba(0,0,0,0.6); }
    .player-quality-badge, .speed-indicator { font-size: 11px; padding: 3px 6px; }
    .video-info { padding: 16px; }
    .info-header { flex-direction: row; align-items: flex-start; gap: 12px; }
    .poster-wrapper { width: 100px; }
    .poster-overlay i { font-size: 24px; }
    .video-title { font-size: 16px; }
    .video-meta { gap: 8px; }
    .meta-item { font-size: 12px; }
    .meta-badge.quality, .meta-badge.duration { font-size: 11px; padding: 3px 8px; }
    .video-tags { display: none; }
    .quality-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .quality-option { padding: 12px 8px; }
    .quality-option .q-label { font-size: 13px; }
    .action-bar { justify-content: stretch; gap: 8px; }
    .action-bar .btn-secondary { flex: 1; justify-content: center; font-size: 13px; padding: 10px 12px; }
    .history-grid { grid-template-columns: 1fr; gap: 10px; }
    .community-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .section-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .feed-tabs { width: 100%; justify-content: center; }
    .feed-tab { flex: 1; text-align: center; padding: 8px 12px; }
    .history-item { padding: 10px; }
    .history-thumb { width: 80px; }
    .history-delete { opacity: 1; min-width: 36px; min-height: 36px; }
    .community-info { padding: 10px; gap: 8px; }
    .community-title { font-size: 13px; }
    .community-stats { font-size: 11px; padding-top: 8px; }
    .like-btn { padding: 4px 8px; font-size: 11px; }
    .modal { max-height: 85vh; margin: 0 8px; }
    .modal-header { padding: 16px; }
    .modal-body { padding: 16px; }
    .shortcut-row { padding: 10px 0; gap: 8px; }
    .shortcut-row span { font-size: 13px; }
    .key { font-size: 12px; padding: 3px 8px; }
    .toast-container { bottom: max(16px, var(--safe-bottom)); width: calc(100% - 24px); }
    .toast { min-width: unset; padding: 12px 16px; font-size: 13px; }
    .footer { padding: 24px 16px 16px; font-size: 12px; }
}

@media (max-width: 480px) {
    .app-container { padding: 8px; }
    .header { padding: 16px 0 12px; }
    .logo-text { font-size: 20px; }
    .header-subtitle { font-size: 12px; }
    .input-hints { gap: 8px; font-size: 10px; }
    .input-wrapper { padding: 8px; border-radius: var(--radius-lg); }
    .url-input { font-size: 16px; padding: 8px 4px; }
    .btn-primary { padding: 12px; font-size: 14px; }
    .player-wrapper { border-radius: var(--radius-md); }
    .player-overlay { padding: 8px 6px 10px; }
    .big-play-btn { width: 56px; height: 56px; font-size: 20px; }
    .center-controls { gap: 16px; }
    .center-btn { width: 40px; height: 40px; font-size: 14px; }
    .center-btn--play { width: 52px; height: 52px; font-size: 18px; }
    .control-btn { width: 40px; height: 40px; font-size: 15px; padding: 6px; }
    .control-btn.play-btn { width: 40px; height: 40px; font-size: 16px; }
    .progress-container { height: 24px; padding: 8px 0; }
    .progress-bar { height: 4px; }
    .progress-container:hover .progress-bar { height: 5px; }
    .progress-handle { width: 16px; height: 16px; inset-inline-end: -8px; }
    .time-display { display: none; }
    .top-bar-title { font-size: 11px; max-width: 70%; }
    .close-player-btn { width: 36px; height: 36px; font-size: 16px; top: 6px; inset-inline-end: 6px; }
    .player-quality-badge, .speed-indicator { font-size: 10px; padding: 2px 5px; }
    #settingsBtn { display: none; }
    .video-info { padding: 12px; }
    .info-header { flex-direction: column; gap: 10px; }
    .poster-wrapper { width: 100%; max-width: 200px; aspect-ratio: 16/9; }
    .video-title { font-size: 15px; }
    .video-meta { gap: 6px; }
    .meta-item { font-size: 11px; }
    .meta-badge.quality, .meta-badge.duration { font-size: 10px; padding: 2px 6px; }
    .quality-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
    .quality-option { padding: 10px 6px; }
    .quality-option .q-label { font-size: 12px; }
    .quality-option .q-source { font-size: 10px; }
    .quality-option .q-badge { font-size: 9px; padding: 1px 4px; }
    .action-bar { gap: 6px; padding-top: 12px; margin-top: 16px; }
    .action-bar .btn-secondary { font-size: 12px; padding: 8px 10px; flex: 1; }
    .community-grid { grid-template-columns: 1fr; gap: 10px; }
    .history-item { padding: 10px; gap: 10px; }
    .history-thumb { width: 72px; }
    .history-title { font-size: 13px; }
    .history-meta { font-size: 11px; }
    .history-delete { min-width: 32px; min-height: 32px; font-size: 12px; }
    .community-card { border-radius: var(--radius-sm); }
    .community-info { padding: 10px; }
    .community-title { font-size: 13px; -webkit-line-clamp: 2; }
    .community-stats { font-size: 11px; }
    .like-btn { padding: 4px 8px; font-size: 11px; }
    .section-title { font-size: 16px; }
    .feed-tab { font-size: 12px; padding: 6px 10px; }
    .btn-clear { font-size: 11px; padding: 5px 10px; }
    .btn-load-more { padding: 10px 24px; font-size: 13px; }
    .modal { border-radius: var(--radius-lg); margin: 0 4px; }
    .modal-header { padding: 14px; }
    .modal-title { font-size: 16px; }
    .modal-body { padding: 14px; }
    .shortcut-row { padding: 8px 0; flex-direction: column; align-items: flex-start; gap: 6px; }
    .shortcut-row span:first-child { font-size: 12px; }
    .shortcut-keys { display: flex; gap: 4px; flex-wrap: wrap; }
    .key { font-size: 11px; padding: 2px 6px; }
    .toast-container { bottom: max(12px, var(--safe-bottom)); width: calc(100% - 16px); }
    .toast { padding: 10px 14px; font-size: 12px; gap: 8px; }
    .footer { padding: 20px 12px 12px; font-size: 11px; }
    .error-container { padding: 14px 16px; margin: 12px auto; }
    .error-icon { font-size: 20px; }
    .error-title { font-size: 14px; }
    .error-message { font-size: 12px; }
    .loading-animation { width: 60px; height: 60px; }
    .loading-text { font-size: 14px; }
    .loading-subtext { font-size: 12px; }
}

@media (max-height: 500px) and (orientation: landscape) {
    .header { padding: 12px 0 8px; }
    .logo-icon { width: 32px; height: 32px; font-size: 16px; }
    .logo-text { font-size: 18px; }
    .header-subtitle { display: none; }
    .input-section { margin-bottom: 16px; }
    .input-wrapper { padding: 6px; }
    .url-input { padding: 8px 4px; }
    .btn-primary { padding: 10px 20px; }
    .input-hints { display: none; }
    .player-overlay { padding: 8px; }
    .big-play-btn { width: 48px; height: 48px; font-size: 18px; }
    .center-btn { width: 36px; height: 36px; font-size: 14px; }
    .center-btn--play { width: 44px; height: 44px; font-size: 16px; }
    .control-btn { width: 36px; height: 36px; font-size: 14px; padding: 6px; }
    .progress-container { height: 20px; padding: 6px 0; }
    .time-display { font-size: 10px; }
    .top-bar-title { font-size: 11px; }
    .close-player-btn { width: 32px; height: 32px; font-size: 14px; }
}

@media (hover: none) and (pointer: coarse) {
    .close-player-btn { opacity: 1; pointer-events: all; }
    .control-btn { min-width: 44px; min-height: 44px; }
    .progress-handle { transform: translateY(-50%) scale(1); width: 22px; height: 22px; inset-inline-end: -11px; }
    .progress-bar { height: 6px; }
    .volume-container .volume-slider-wrapper { width: 60px; }
    .quality-option:active, .history-item:active, .community-card:active, .btn-secondary:active, .btn-primary:active, .feed-tab:active, .like-btn:active { transform: scale(0.97); opacity: 0.8; }
    .history-delete { opacity: 1; }
    .history-item:hover, .community-card:hover, .quality-option:hover { transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
    .bg-mesh { animation: none; }
    .particle { animation: none; opacity: 0.3; }
    .logo-icon { animation: none; }
    html { scroll-behavior: auto; }
}

@media (prefers-color-scheme: dark) { body { background: var(--bg-primary); } }

@media (prefers-contrast: high) {
    :root { --border: rgba(255, 255, 255, 0.25); --text-secondary: #b0c4de; --text-muted: #8899aa; }
    .progress-bar { background: rgba(255,255,255,0.4); }
    .control-btn { border: 1px solid rgba(255,255,255,0.3); }
}

@media print {
    .bg-mesh, .bg-grid, .bg-particles, .header, .input-section, .loading-container, .player-overlay, .big-play-btn, .close-player-btn, .action-bar, .history-section, .footer, .toast-container, .modal-overlay { display: none !important; }
    .video-card { display: block !important; border: 1px solid #000; box-shadow: none; }
    .player-wrapper { aspect-ratio: auto; height: auto; }
    video { max-height: 60vh; }
    body { background: white; color: black; }
}

@media (max-width: 768px), (max-height: 500px) and (orientation: landscape) {
    .volume-container, #pipBtn, #downloadPlayerBtn, #settingsBtn, .time-display { display: none; }
    .controls-row, .controls-left, .controls-right { flex-wrap: nowrap; }
    .controls-row { justify-content: space-between; padding-bottom: 4px; }
    .controls-left, .controls-right { gap: 6px; }
    .control-btn { width: 36px; height: 36px; min-width: 36px; padding: 4px; }
    .control-btn.play-btn { width: 40px; }
    .player-quality-badge, .speed-indicator { font-size: 11px; padding: 4px 6px; margin: 0; }
}

@media (hover: none) and (pointer: coarse) {
    .progress-handle { width: 16px; height: 16px; inset-inline-end: -8px; }
}

.player-wrapper.controls-hidden { cursor: none; }
.player-wrapper.controls-hidden .player-overlay, .player-wrapper.controls-hidden .close-player-btn, .player-wrapper.controls-hidden .top-bar { opacity: 0; pointer-events: none; }
.player-wrapper.controls-hidden .top-bar { transform: translateY(-10px); }

@media (max-width: 768px) {
    .info-header { align-items: center; }
    .poster-wrapper { width: 120px; min-width: 120px; border-radius: var(--radius-sm); }
}

@media (max-width: 480px) {
    .poster-wrapper { width: 100px; min-width: 100px; }
    .video-title { font-size: 15px; margin-bottom: 4px; }
    .meta-badge { padding: 3px 8px; font-size: 11px; }
}