*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0f13;--surface: #1a1a24;--surface2: #22222f;--border: #2e2e3e;--accent: #7c6fcd;--accent-hover: #9d91e0;--accent-light: rgba(124, 111, 205, .15);--text: #e8e8f0;--text-muted: #888899;--danger: #e05555;--danger-hover: #e87070;--success: #4caf7d;--warning: #f0a040;--radius: 10px;--radius-sm: 6px}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}.page{max-width:900px;margin:0 auto;padding:20px 16px 60px}.page-wide{max-width:1100px;margin:0 auto;padding:20px 16px 60px}.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;gap:12px}.header h1{font-size:1.5rem;font-weight:700;color:var(--text)}.header-sub{font-size:.9rem;color:var(--text-muted);margin-top:2px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}button{font-family:inherit;cursor:pointer;border:none;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;transition:background .15s,opacity .15s}.btn-primary{background:var(--accent);color:#fff;padding:10px 20px}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface2);color:var(--text);padding:10px 20px;border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border)}.btn-danger{background:var(--danger);color:#fff;padding:10px 20px}.btn-danger:hover:not(:disabled){background:var(--danger-hover)}.btn-icon{background:transparent;color:var(--text-muted);padding:6px 8px;font-size:1rem;border-radius:var(--radius-sm)}.btn-icon:hover{background:var(--surface2);color:var(--danger)}.progress-bar-track{background:var(--surface2);border-radius:999px;height:8px;overflow:hidden;margin-top:8px}.progress-bar-fill{height:100%;border-radius:999px;transition:width .4s ease}input[type=text],input[type=password],input[type=number]{font-family:inherit;font-size:1rem;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:10px 14px;width:100%;outline:none;transition:border-color .15s}input:focus{border-color:var(--accent)}input::placeholder{color:var(--text-muted)}.participants-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}.participant-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;cursor:pointer;text-decoration:none;color:inherit;display:block;transition:border-color .15s,transform .1s}.participant-card:hover{border-color:var(--accent);transform:translateY(-2px)}.participant-card.complete{border-color:var(--success)}.participant-name{font-size:1.1rem;font-weight:600;margin-bottom:8px}.participant-count{font-size:.85rem;color:var(--text-muted);margin-bottom:6px}.song-list{display:flex;flex-direction:column;gap:8px;margin-top:16px}.song-item{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px}.song-item-thumb{width:44px;height:44px;border-radius:4px;object-fit:cover;flex-shrink:0;background:var(--surface2)}.song-item-thumb-placeholder{width:44px;height:44px;border-radius:4px;background:var(--surface2);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0;color:var(--text-muted)}.song-item-info{flex:1;min-width:0}.song-item-title{font-weight:600;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song-item-artist{font-size:.8rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.song-number{font-size:.8rem;color:var(--text-muted);font-weight:600;min-width:24px;text-align:right}.search-section{position:relative}.search-results{display:flex;flex-direction:column;gap:8px;margin-top:10px}.yt-result{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px;cursor:pointer;transition:border-color .15s}.yt-result:hover{border-color:var(--accent);background:var(--surface2)}.yt-result img{width:80px;height:56px;object-fit:cover;border-radius:4px;flex-shrink:0;background:var(--surface2)}.yt-result-info{flex:1;min-width:0}.yt-result-title{font-size:.88rem;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.yt-result-channel{font-size:.78rem;color:var(--text-muted);margin-top:2px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;display:flex;align-items:center;justify-content:center;z-index:1000;padding:16px}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;max-width:560px;width:100%;max-height:90vh;overflow-y:auto}.modal h2{font-size:1.1rem;margin-bottom:14px}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}.modal-video{width:100%;aspect-ratio:16/9;border-radius:var(--radius-sm);border:none;margin-bottom:14px}.modal-song-info{margin-bottom:12px}.modal-song-info strong{display:block;font-size:1rem;margin-bottom:2px}.modal-song-info span{font-size:.88rem;color:var(--text-muted)}.banner{padding:12px 16px;border-radius:var(--radius-sm);font-size:.9rem;margin-bottom:14px}.banner-warning{background:#f0a04026;border:1px solid rgba(240,160,64,.4);color:var(--warning)}.banner-success{background:#4caf7d26;border:1px solid rgba(76,175,125,.4);color:var(--success)}.banner-info{background:var(--accent-light);border:1px solid rgba(124,111,205,.3);color:var(--accent-hover)}.reveal-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin-bottom:12px;transition:border-color .15s}.reveal-card-main{display:flex;align-items:center;gap:12px;padding:14px}.reveal-card-thumb{width:72px;height:52px;object-fit:cover;border-radius:4px;flex-shrink:0;background:var(--surface2)}.reveal-card-thumb-placeholder{width:72px;height:52px;background:var(--surface2);border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0}.reveal-card-info{flex:1;min-width:0}.reveal-card-title{font-weight:700;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reveal-card-artist{font-size:.85rem;color:var(--text-muted)}.reveal-card-participants{padding:0 14px 14px;animation:slideDown .25s ease}.participant-chip{display:inline-block;background:var(--accent-light);border:1px solid rgba(124,111,205,.3);color:var(--accent-hover);padding:4px 12px;border-radius:999px;font-size:.85rem;font-weight:600;margin:4px 4px 4px 0}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{color:var(--danger);font-size:.88rem;margin-top:8px}a{color:var(--accent-hover);text-decoration:none}a:hover{text-decoration:underline}.text-muted{color:var(--text-muted)}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mt-20{margin-top:20px}.mt-24{margin-top:24px}.gap-10{gap:10px}.flex{display:flex}.flex-center{display:flex;align-items:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.flex-col{display:flex;flex-direction:column}.w-full{width:100%}hr.divider{border:none;border-top:1px solid var(--border);margin:20px 0}.btn-logout{background:transparent;color:var(--text-muted);padding:8px 14px;border:1px solid var(--border);font-size:.85rem}.btn-logout:hover{background:var(--surface2);color:var(--text)}.search-disabled-msg{text-align:center;padding:20px;color:var(--success);font-size:1rem;font-weight:600;background:#4caf7d1a;border:1px solid rgba(76,175,125,.3);border-radius:var(--radius);margin-top:12px}@media (max-width: 480px){.header h1{font-size:1.2rem}.participants-grid{grid-template-columns:repeat(2,1fr)}.modal{padding:16px}.modal-actions{flex-direction:column-reverse}.modal-actions button{width:100%}}