*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-deep: #08071a;--bg-mid: #0e0c28;--glass-bg: rgba(255, 255, 255, .055);--glass-border: rgba(255, 255, 255, .1);--glass-hover: rgba(255, 255, 255, .08);--accent-purple: #8b5cf6;--accent-violet: #a78bfa;--accent-cyan: #22d3ee;--accent-pink: #ec4899;--accent-glow: rgba(139, 92, 246, .45);--text-primary: #f1f0ff;--text-secondary: #a0a0c8;--text-muted: #636388;--success: #34d399;--error: #f87171;--warning: #fbbf24;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-xl: 28px;--shadow-glow: 0 0 40px rgba(139, 92, 246, .25), 0 0 80px rgba(34, 211, 238, .1);--shadow-card: 0 8px 32px rgba(0, 0, 0, .5), 0 2px 8px rgba(0, 0, 0, .3);--shadow-btn: 0 4px 24px rgba(139, 92, 246, .5);--font: "Plus Jakarta Sans", system-ui, sans-serif;--transition: .25s cubic-bezier(.4, 0, .2, 1)}html{scroll-behavior:smooth}body{font-family:var(--font);background:var(--bg-deep);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}.bg-canvas{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;overflow:hidden;pointer-events:none}.blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.35;animation:floatBlob 12s ease-in-out infinite alternate}.blob-1{width:600px;height:600px;background:radial-gradient(circle,#7c3aed,#4f46e5);top:-200px;left:-150px;animation-duration:14s}.blob-2{width:500px;height:500px;background:radial-gradient(circle,#0891b2,#0e7490);bottom:-150px;right:-100px;animation-duration:10s;animation-delay:-4s}.blob-3{width:350px;height:350px;background:radial-gradient(circle,#db2777,#9d174d);top:50%;left:55%;animation-duration:16s;animation-delay:-8s;opacity:.2}@keyframes floatBlob{0%{transform:translate(0) scale(1)}50%{transform:translate(30px,-40px) scale(1.05)}to{transform:translate(-20px,20px) scale(.97)}}.app{position:relative;z-index:1;min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:60px 20px 100px}.container{width:100%;max-width:720px}.header{text-align:center;margin-bottom:56px}.logo{display:inline-flex;align-items:center;gap:12px;margin-bottom:20px}.logo-icon{width:52px;height:52px;background:linear-gradient(135deg,var(--accent-purple),var(--accent-cyan));border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-btn);font-size:26px;animation:logoPulse 3s ease-in-out infinite}@keyframes logoPulse{0%,to{box-shadow:0 0 24px #8b5cf680}50%{box-shadow:0 0 48px #8b5cf6cc,0 0 80px #22d3ee4d}}.logo-text{font-size:2rem;font-weight:800;background:linear-gradient(90deg,var(--accent-violet),var(--accent-cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:-.5px}.tagline{font-size:1rem;color:var(--text-secondary);line-height:1.6}.badge-row{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:16px;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 12px;border-radius:99px;font-size:.72rem;font-weight:600;letter-spacing:.3px;border:1px solid var(--glass-border);background:var(--glass-bg);color:var(--text-secondary)}.badge.green{color:var(--success);border-color:#34d3994d;background:#34d39914}.badge.purple{color:var(--accent-violet);border-color:#a78bfa4d;background:#a78bfa14}.badge.cyan{color:var(--accent-cyan);border-color:#22d3ee4d;background:#22d3ee14}.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-xl);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:var(--shadow-card),var(--shadow-glow);padding:32px;transition:box-shadow var(--transition)}.glass-card:hover{box-shadow:var(--shadow-card),0 0 60px #8b5cf64d,0 0 120px #22d3ee1f}.input-section{margin-bottom:12px}.input-label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.8px;margin-bottom:10px}.input-row{display:flex;gap:10px;align-items:stretch}.url-input{flex:1;padding:14px 18px;background:#ffffff0f;border:1px solid var(--glass-border);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font);font-size:.95rem;outline:none;transition:border-color var(--transition),background var(--transition),box-shadow var(--transition)}.url-input::placeholder{color:var(--text-muted)}.url-input:focus{border-color:var(--accent-purple);background:#8b5cf614;box-shadow:0 0 0 3px #8b5cf62e,0 0 20px #8b5cf626}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border:none;border-radius:var(--radius-md);font-family:var(--font);font-size:.92rem;font-weight:700;cursor:pointer;transition:all var(--transition);white-space:nowrap;-webkit-user-select:none;user-select:none}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.btn-primary{background:linear-gradient(135deg,var(--accent-purple) 0%,#6d28d9 50%,var(--accent-cyan) 150%);background-size:200% 200%;color:#fff;box-shadow:var(--shadow-btn);animation:shimmerBtn 4s linear infinite}@keyframes shimmerBtn{0%{background-position:0% 0%}50%{background-position:100% 100%}to{background-position:0% 0%}}.btn-primary:not(:disabled):hover{box-shadow:0 6px 36px #8b5cf6b3;transform:translateY(-1px)}.btn-secondary{background:var(--glass-bg);color:var(--text-secondary);border:1px solid var(--glass-border)}.btn-secondary:not(:disabled):hover{background:var(--glass-hover);color:var(--text-primary);border-color:#ffffff2e}.btn-success{background:linear-gradient(135deg,#059669,#10b981);color:#fff;box-shadow:0 4px 24px #10b98173}.btn-success:not(:disabled):hover{box-shadow:0 6px 36px #10b981a6;transform:translateY(-1px)}.btn-icon{font-size:1.1em}.divider{height:1px;background:linear-gradient(90deg,transparent,var(--glass-border),transparent);margin:28px 0}.video-card{animation:fadeSlideUp .4s cubic-bezier(.16,1,.3,1) both}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.video-meta{display:flex;gap:20px;align-items:flex-start;margin-bottom:24px}.video-thumbnail-wrap{position:relative;flex-shrink:0;border-radius:var(--radius-md);overflow:hidden;box-shadow:0 4px 20px #00000080}.video-thumbnail{width:140px;height:90px;object-fit:cover;display:block;border-radius:var(--radius-md)}.shorts-badge{position:absolute;top:6px;left:6px;background:linear-gradient(135deg,#ec4899,#9d174d);color:#fff;font-size:.65rem;font-weight:800;padding:2px 8px;border-radius:99px;letter-spacing:.5px;text-transform:uppercase}.video-info{flex:1;min-width:0}.video-title{font-size:1.05rem;font-weight:700;color:var(--text-primary);line-height:1.4;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.video-author{font-size:.82rem;color:var(--accent-violet);font-weight:600;margin-bottom:10px}.video-stats{display:flex;gap:12px;flex-wrap:wrap}.stat{display:inline-flex;align-items:center;gap:4px;font-size:.75rem;color:var(--text-muted)}.format-section-label{font-size:.8rem;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.8px;margin-bottom:14px}.format-tabs{display:flex;gap:6px;margin-bottom:16px;background:#00000040;border-radius:var(--radius-md);padding:4px}.format-tab{flex:1;padding:8px;font-family:var(--font);font-size:.8rem;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition);background:transparent;color:var(--text-muted)}.format-tab.active{background:linear-gradient(135deg,var(--accent-purple),#6d28d9 80%);color:#fff;box-shadow:0 2px 12px #8b5cf666}.format-tab:not(.active):hover{background:var(--glass-hover);color:var(--text-secondary)}.format-list{display:flex;flex-direction:column;gap:8px;max-height:280px;overflow-y:auto;padding-right:4px}.format-list::-webkit-scrollbar{width:4px}.format-list::-webkit-scrollbar-track{background:transparent}.format-list::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:99px}.format-item{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#ffffff0a;border:1px solid var(--glass-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition)}.format-item:hover{background:#8b5cf61a;border-color:#8b5cf659;transform:translate(3px)}.format-item.selected{background:#8b5cf629;border-color:var(--accent-purple);box-shadow:0 0 0 1px #8b5cf64d}.format-radio{width:18px;height:18px;border-radius:50%;border:2px solid var(--glass-border);flex-shrink:0;transition:all var(--transition);display:flex;align-items:center;justify-content:center}.format-item.selected .format-radio{border-color:var(--accent-purple);background:var(--accent-purple);box-shadow:0 0 8px #8b5cf699}.format-item.selected .format-radio:after{content:"";width:6px;height:6px;border-radius:50%;background:#fff}.format-label-text{flex:1;font-size:.88rem;color:var(--text-secondary)}.format-item.selected .format-label-text{color:var(--text-primary);font-weight:600}.format-size{font-size:.75rem;color:var(--text-muted)}.download-actions{display:flex;gap:10px;margin-top:24px}.download-actions .btn{flex:1}.status-banner{display:flex;align-items:center;gap:12px;padding:14px 18px;border-radius:var(--radius-md);margin-top:16px;font-size:.88rem;font-weight:600;animation:fadeSlideUp .3s ease both}.status-banner.loading{background:#8b5cf61f;border:1px solid rgba(139,92,246,.3);color:var(--accent-violet)}.status-banner.error{background:#f871711a;border:1px solid rgba(248,113,113,.3);color:var(--error)}.status-banner.success{background:#34d3991a;border:1px solid rgba(52,211,153,.3);color:var(--success)}.spinner{width:18px;height:18px;border:2px solid rgba(167,139,250,.3);border-top-color:var(--accent-violet);border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}.hint{text-align:center;padding:32px 0;color:var(--text-muted);font-size:.88rem}.hint-icon{font-size:3rem;display:block;margin-bottom:12px;opacity:.5}.footer{margin-top:60px;text-align:center;color:var(--text-muted);font-size:.78rem}.footer a{color:var(--accent-violet);text-decoration:none}@media (max-width: 520px){.app{padding:36px 14px 80px}.glass-card{padding:20px}.video-meta{flex-direction:column}.video-thumbnail{width:100%;height:180px}.input-row,.download-actions{flex-direction:column}}