:root{--spotify-green: #1DB954;--spotify-black: #191414;--spotify-white: #FFFFFF;--spotify-gray: #535353;--spotify-light-gray: #B3B3B3}.device-status{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;margin:1rem 0;background:#ffffff0d;border-radius:8px;border:1px solid rgba(255,255,255,.1);font-size:.9rem}.device-status .status-label{font-weight:600;color:#ffffffb3}.retry-device-btn{margin-left:auto;padding:.4rem .8rem;background:#1db954cc;color:#fff;border:none;border-radius:4px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s ease}.retry-device-btn:hover{background:#1db954;transform:scale(1.05)}.retry-device-btn:active{transform:scale(.98)}.device-status.status-initializing #deviceStatusText{color:orange}.device-status.status-connecting #deviceStatusText{color:#4a9eff;animation:pulse 1.5s ease-in-out infinite}.device-status.status-ready #deviceStatusText{color:#1db954;font-weight:600}.device-status.status-active #deviceStatusText{color:#1ed760;font-weight:600}.device-status.status-error #deviceStatusText{color:#f44336}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,var(--spotify-green) 0%,var(--spotify-black) 100%);color:var(--spotify-white);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}#app{width:100%;max-width:600px}.container{background:#ffffff0d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:20px;padding:40px;box-shadow:0 8px 32px #0000004d}h1{font-size:3rem;text-align:center;margin-bottom:10px;font-weight:700}.tagline{text-align:center;font-size:1.2rem;color:var(--spotify-light-gray);margin-bottom:30px}.info-card{background:#ffffff14;border-radius:12px;padding:24px;margin-bottom:30px}.info-card h2{font-size:1.5rem;margin-bottom:16px;color:var(--spotify-green)}.info-card ol{list-style-position:inside;line-height:1.8}.info-card li{margin-bottom:8px}.auth-section{text-align:center;margin:30px 0;display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center}.btn-primary{background:var(--spotify-green);color:var(--spotify-white);border:none;padding:16px 48px;font-size:1.1rem;font-weight:700;border-radius:500px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px #1db95466}.btn-primary:hover{background:#1ed760;transform:scale(1.05);box-shadow:0 6px 16px #1db95499}.btn-primary:active{transform:scale(.98)}.btn-secondary{background:#ffffff1a;color:var(--spotify-white);border:2px solid var(--spotify-white);padding:12px 32px;font-size:.95rem;font-weight:600;border-radius:500px;cursor:pointer;transition:all .3s ease;margin-left:12px}.btn-secondary:hover{background:#fff3;transform:scale(1.05)}.btn-secondary:active{transform:scale(.98)}.requirements{background:#0003;border-radius:12px;padding:20px;border-left:4px solid var(--spotify-green)}.requirements p{margin-bottom:12px;font-weight:600}.requirements ul{list-style-position:inside;color:var(--spotify-light-gray);line-height:1.8}.requirements li{margin-bottom:6px}@media(max-width:768px){.container{padding:30px 20px}h1{font-size:2.5rem}.tagline{font-size:1rem}.btn-primary{padding:14px 36px;font-size:1rem}.btn-secondary{padding:10px 24px;font-size:.9rem;margin-left:0}.auth-section{flex-direction:column}}.playlist-input-section{margin:2rem 0}.playlist-input-section label{display:block;margin-bottom:.5rem;font-weight:500}.playlist-input{width:100%;padding:.75rem;font-size:1rem;border:2px solid #ccc;border-radius:4px;margin-bottom:1rem;box-sizing:border-box}.playlist-input:focus{outline:none;border-color:#1db954}.error-message{background-color:#f8d7da;color:#721c24;padding:1rem;border-radius:4px;margin:1rem 0;border:1px solid #f5c6cb}.table-container{overflow-x:auto;margin:1rem 0}#tracksTable{width:100%;border-collapse:collapse;background:#fff;box-shadow:0 2px 4px #0000001a}#tracksTable th{background-color:#1db954;color:#fff;padding:1rem;text-align:left;font-weight:600}#tracksTable td{padding:.75rem 1rem;border-bottom:1px solid #eee;color:#333}#tracksTable tbody tr:hover{background-color:#f5f5f5}#tracksTable tbody tr:last-child td{border-bottom:none}.navigation{display:flex;gap:1rem;margin-top:2rem}.navigation button{flex:1}.editable-cell{width:100%;padding:.5rem;font-size:1rem;border:1px solid transparent;border-radius:4px;background:transparent;color:#333;font-family:inherit;transition:all .2s ease}.editable-cell:hover{border-color:#d0d0d0;background:#1db9540d}.editable-cell:focus{outline:none;border-color:#1db954;background:#fff;box-shadow:0 0 0 2px #1db9541a}.editable-cell.multi-artist{background:#fef3cd}.editable-cell.multi-artist:hover{background:#fff3cd;border-color:#ffc107}.editable-cell.multi-artist:focus{background:#fff9e6;border-color:#ffc107;box-shadow:0 0 0 2px #ffc10733}#tracksTable td{padding:.25rem .5rem}#tracksTable th{position:relative;-webkit-user-select:none;user-select:none}.column-resizer{position:absolute;top:0;right:0;width:5px;height:100%;cursor:col-resize;background:transparent;z-index:10}.column-resizer:hover{background:#ffffff4d}.column-resizer:active{background:#ffffff80}.pdf-action-section{margin:1.5rem 0;display:flex;justify-content:center}.pdf-action-section .btn-primary{min-width:200px}.scanner-section{margin:2rem 0;background:#0000004d;border-radius:12px;padding:20px;text-align:center}.qr-reader{max-width:500px;margin:0 auto;border-radius:12px;overflow:hidden;box-shadow:0 4px 12px #0000004d}.scanner-status{margin-top:1rem;padding:1rem;font-size:1.1rem;font-weight:500;color:var(--spotify-light-gray);border-radius:8px;background:#ffffff0d}.scanner-status.ready{color:var(--spotify-green);background:#1db9541a}.scanner-status.error{color:#ff6b6b;background:#ff6b6b1a}.scanner-actions{margin-top:2rem;text-align:center}.start-scanner-section{margin:2rem 0;text-align:center;padding:2rem;background:#0000004d;border-radius:12px}.player-box{margin:2rem 0;background:linear-gradient(135deg,#1db95426,#0006);border-radius:16px;padding:24px;box-shadow:0 8px 24px #0006;border:2px solid rgba(29,185,84,.3);animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.player-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:2px solid rgba(255,255,255,.1)}.player-header h3{font-size:1.3rem;color:var(--spotify-green);margin:0}.close-btn{background:#ffffff1a;border:none;color:var(--spotify-white);width:32px;height:32px;border-radius:50%;font-size:1.2rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.close-btn:hover{background:#fff3;transform:scale(1.1)}.player-content{display:flex;flex-direction:column;gap:1.5rem}.track-info{display:flex;gap:1rem;align-items:center}.track-image-container{flex-shrink:0}.track-image-container img{width:100px;height:100px;border-radius:8px;box-shadow:0 4px 12px #0000004d;object-fit:cover}.track-details{flex-grow:1;text-align:left}.track-details h4{font-size:1.2rem;margin:0 0 .5rem;color:var(--spotify-white);font-weight:600}.track-details p{font-size:1rem;margin:0;color:var(--spotify-light-gray)}.player-controls{display:flex;justify-content:center;align-items:center;gap:1rem;padding:1rem 0}.control-btn{background:#ffffff1a;border:2px solid rgba(255,255,255,.2);color:var(--spotify-white);width:48px;height:48px;border-radius:50%;font-size:1.2rem;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.control-btn:hover{background:#fff3;border-color:var(--spotify-green);transform:scale(1.05)}.control-btn.play-btn{width:56px;height:56px;background:var(--spotify-green);border-color:var(--spotify-green);font-size:1.5rem}.control-btn.play-btn:hover{background:#1ed760;transform:scale(1.1);box-shadow:0 4px 12px #1db95466}.progress-container{width:100%;height:6px;background:#ffffff1a;border-radius:3px;overflow:hidden}.progress-bar{height:100%;background:var(--spotify-green);width:0%;transition:width .1s linear;border-radius:3px}.time-display{display:flex;justify-content:space-between;font-size:.85rem;color:var(--spotify-light-gray)}.qr-view{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2rem;cursor:pointer;transition:transform .2s ease}.qr-code-image{max-width:300px;width:100%;height:auto;border-radius:12px;box-shadow:0 4px 12px #0000004d;background:#fff;padding:10px;margin-bottom:1.5rem}.qr-hint{margin-bottom:1rem;font-size:.9rem;color:var(--spotify-light-gray);text-align:center}.qr-play-btn{margin-top:0;cursor:pointer;z-index:10}.qr-play-btn:hover{transform:scale(1.1)}.track-info-view{transition:all .2s ease}.info-hint{margin-top:1rem;font-size:.9rem;color:var(--spotify-light-gray);text-align:center}.show-qr-btn{margin-top:1rem;padding:.75rem 1.5rem;background:#ffffff1a;border:2px solid rgba(255,255,255,.3);color:var(--spotify-white);font-size:.95rem;font-weight:600;border-radius:500px;cursor:pointer;transition:all .3s ease}.show-qr-btn:hover{background:#fff3;border-color:var(--spotify-green);transform:scale(1.05)}.show-qr-btn:active{transform:scale(.98)}@media(max-width:768px){.player-box{padding:20px}.track-info{flex-direction:column;text-align:center}.track-details{text-align:center}.track-image-container img{width:80px;height:80px}.player-controls{gap:.75rem}.control-btn{width:44px;height:44px}.control-btn.play-btn{width:52px;height:52px}.qr-code-image{max-width:250px}.qr-view{padding:1.5rem}}