:root{--bg: #0a0a0f;--surface: #14141f;--surface2: #1e1e2e;--border: #2a2a3e;--text: #e8e8f0;--text-dim: #8888a0;--accent: #4488ff;--accent-glow: rgba(68, 136, 255, .3);--yellow: #ffcc00;--yellow-dim: rgba(255, 204, 0, .2);--red: #ff4444;--green: #44cc66;--orange: #ff8844;--purple: #aa66ff;--cyan: #44ddff;--mono: "SF Mono", "Fira Code", "Cascadia Code", monospace;--sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden;font-family:var(--sans);background:var(--bg);color:var(--text);user-select:none;-webkit-user-select:none}body{display:flex;flex-direction:column}.mono{font-family:var(--mono)}.hidden{display:none!important}#viz-container{flex:1;position:relative;background:#000;overflow:hidden;min-height:200px}#spectrogram-canvas,#overlay-canvas{position:absolute;top:0;left:0;width:100%;height:100%}#overlay-canvas{z-index:2;cursor:crosshair}#zoom-controls{position:absolute;top:12px;right:12px;z-index:3;display:flex;gap:6px}#zoom-controls button{width:36px;height:36px;border:1px solid var(--border);border-radius:50%;background:#14141fcc;backdrop-filter:blur(8px);color:var(--text);font-size:16px;cursor:pointer;transition:all .15s}#zoom-controls button:hover{background:var(--surface2);border-color:var(--accent)}#analyzing-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#000000b3;backdrop-filter:blur(4px);z-index:5}.analysis-progress{display:flex;flex-direction:column;align-items:center;gap:12px;width:320px}.analysis-progress span{color:var(--text);font-size:13px;font-weight:500}.progress-track{width:100%;height:6px;background:var(--border);border-radius:3px;overflow:hidden}.progress-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--cyan));border-radius:3px;transition:width .3s ease}#status-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:var(--surface);border-top:1px solid var(--border);gap:24px;flex-wrap:wrap}#loop-status{display:flex;flex-direction:column;gap:2px}#loop-label{font-weight:600;font-size:14px}#time-display{font-size:18px;color:var(--text-dim)}#tempo-section{display:flex;align-items:center;gap:10px;background:var(--surface2);padding:6px 12px;border-radius:10px}#bpm-display{display:flex;flex-direction:column;align-items:flex-end;gap:1px}#bpm-value{font-size:18px;font-weight:700}#bpm-display .label{font-size:10px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px}.tap-button{width:48px;height:48px;border-radius:50%;border:none;background:var(--orange);color:#fff;font-weight:700;font-size:12px;cursor:pointer;transition:transform .1s,opacity .1s}.tap-button:active{transform:scale(.9);opacity:.8}#btn-save-bpm{width:32px;height:32px;border-radius:50%;border:none;background:var(--green);color:#fff;font-size:16px;cursor:pointer}#beats-control{display:flex;align-items:center;gap:4px}#beats-control button{width:24px;height:24px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:14px;cursor:pointer}#beats-display{font-weight:700;font-size:13px;min-width:30px;text-align:center}.accent-btn{padding:4px 10px;border:1px solid var(--cyan);border-radius:6px;background:transparent;color:var(--cyan);font-weight:700;font-size:11px;letter-spacing:.5px;cursor:pointer;transition:all .15s}.accent-btn:hover{background:#44ddff1a}.accent-btn:disabled{opacity:.4;cursor:default}#controls{display:flex;flex-direction:column;gap:10px;padding:10px 16px;background:var(--bg)}.control-row{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}.row-label{font-size:11px;font-weight:700;color:var(--text-dim);letter-spacing:1px}.btn-group{display:flex;gap:8px}.nav-btn,.scale-btn{width:56px;height:56px;border:1px solid var(--border);border-radius:12px;background:var(--surface2);color:var(--text);font-size:22px;cursor:pointer;transition:all .15s}.nav-btn:hover,.scale-btn:hover{background:var(--surface);border-color:var(--accent)}.nav-btn:disabled,.scale-btn:disabled{opacity:.3;cursor:default}.scale-btn{background:#4488ff26;font-weight:700}.speed-btn{padding:6px 14px;border:1px solid var(--border);border-radius:6px;background:transparent;color:var(--text);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}.speed-btn:hover{background:var(--surface2)}.speed-btn.active{background:var(--surface2);border-color:var(--accent);color:var(--accent)}.speed-btn:disabled{opacity:.3;cursor:default}.speed-btn[data-rate="0.75"]{border-color:var(--orange);color:var(--orange)}.speed-btn[data-rate="0.5"]{border-color:var(--red);color:var(--red)}.speed-btn[data-rate="0.25"]{border-color:var(--purple);color:var(--purple)}.transport-btn{width:48px;height:48px;border:none;border-radius:50%;background:var(--surface2);color:var(--text);font-size:20px;cursor:pointer}.play-btn{width:72px;height:72px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:28px;cursor:pointer;box-shadow:0 0 24px var(--accent-glow);transition:all .15s}.play-btn:hover{box-shadow:0 0 36px var(--accent-glow);transform:scale(1.05)}.play-btn.playing{background:var(--surface2);box-shadow:none}#volume-control{display:flex;align-items:center;gap:6px;font-size:14px}#volume-slider{-webkit-appearance:none;width:80px;height:4px;background:var(--border);border-radius:2px;outline:none}#volume-slider::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer}.loop-btn,.bar-btn,.save-btn,.list-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:56px;height:56px;border:2px solid transparent;border-radius:50%;background:var(--surface2);color:var(--text);font-size:10px;font-weight:700;cursor:pointer;gap:2px;transition:all .15s}.loop-btn .icon,.bar-btn .icon{font-size:20px}.save-btn .icon,.list-btn .icon{font-size:16px}.loop-btn.active{background:var(--yellow-dim);border-color:var(--yellow)}.bar-btn{background:#44cc6626}.save-btn{background:#aa66ff26}.list-btn{background:#4444ff26}#file-section{display:flex;justify-content:center;gap:12px;padding:8px 16px 12px;background:var(--bg)}.file-btn{padding:8px 20px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s}.file-btn:hover{background:var(--surface2);border-color:var(--accent)}dialog{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:12px;padding:24px;max-width:400px;width:90%}dialog::backdrop{background:#0009;backdrop-filter:blur(4px)}dialog h3{margin-bottom:8px;font-size:18px}dialog p{color:var(--text-dim);font-size:13px;margin-bottom:12px}dialog input[type=text]{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text);font-size:14px;outline:none}dialog input[type=text]:focus{border-color:var(--accent)}.dialog-buttons{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.dialog-buttons button{padding:6px 16px;border:1px solid var(--border);border-radius:6px;background:transparent;color:var(--text);cursor:pointer;font-size:13px}.dialog-buttons button:last-child{background:var(--accent);border-color:var(--accent);color:#fff}.dialog-close{display:block;margin:12px auto 0;padding:6px 20px;border:1px solid var(--border);border-radius:6px;background:transparent;color:var(--text);cursor:pointer}#loops-list{max-height:300px;overflow-y:auto}.loop-item{display:flex;align-items:center;justify-content:space-between;padding:10px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .1s}.loop-item:hover{background:var(--surface2)}.loop-item-info h4{font-size:14px;margin-bottom:2px}.loop-item-info span{font-size:11px;color:var(--text-dim);font-family:var(--mono)}.loop-item-actions{display:flex;gap:8px}.loop-item-actions button{border:none;background:transparent;color:var(--text-dim);font-size:18px;cursor:pointer}.loop-item-actions button:hover{color:var(--red)}.loop-item-actions button.play-loop:hover{color:var(--accent)}#drop-overlay{position:fixed;inset:0;background:#4488ff26;backdrop-filter:blur(8px);z-index:100;display:flex;align-items:center;justify-content:center}.drop-message{padding:24px 48px;border:3px dashed var(--accent);border-radius:16px;font-size:24px;font-weight:600;color:var(--accent)}