:root{--bg-grad-1: #0f0f0f;--bg-grad-2: #1a1a1a;--panel-bg: rgba(255,255,255,.05);--panel-border: rgba(255,255,255,.1);--accent: #4ecdc4;--accent-alt: #44a08d;--accent-glow: rgba(78,205,196,.4);--accent-subtle: rgba(78,205,196,.1);--accent-subtle-drag: rgba(78,205,196,.2);--text: #ffffff;--text-muted: #888888;--text-secondary: #dddddd;--font-ui: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;--font-mono: "Courier New", monospace;--debug-bg: rgba(0,0,0,.8);--debug-border: #333333;--upload-audio: #4ecdc4;--upload-svg: #da70d6;--upload-svg-bg: rgba(218,112,214,.05);--status-success: #4ecdc4;--status-error: #ff4444;--status-info: #ffc107;--section-border-left: #4ecdc4}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-ui);background:radial-gradient(ellipse at 50% 0%,#0e1620,#080a0d 60%);color:var(--text);min-height:100vh;display:flex;align-items:stretch;-webkit-tap-highlight-color:transparent}.app{flex:1;display:flex;flex-direction:column;align-items:center;padding-bottom:36px}.app-header{width:100%;max-width:600px;display:flex;align-items:center;justify-content:space-between;padding:24px 24px 0}.logo{height:52px;width:auto;mix-blend-mode:screen;filter:drop-shadow(0 0 8px var(--accent-glow));opacity:.9}.skin-switcher{display:flex;align-items:center;gap:10px}.skin-dot{width:14px;height:14px;border-radius:50%;background:var(--dot);border:2px solid transparent;cursor:pointer;transition:transform .15s,border-color .15s,box-shadow .15s;box-shadow:0 0 6px color-mix(in srgb,var(--dot) 50%,transparent)}.skin-dot:hover{transform:scale(1.3)}.skin-dot.active{border-color:#ffffffd9;transform:scale(1.15);box-shadow:0 0 0 3px #00000080,0 0 8px var(--dot)}.disc-section{flex:1;display:flex;align-items:center;justify-content:center;padding:28px 24px 8px}.disc-wrap{position:relative;width:min(480px,calc(100vw - 48px));height:min(480px,calc(100vw - 48px));cursor:pointer}.disc-wrap canvas{display:block;width:100%;height:100%;border-radius:50%;cursor:grab}.disc-wrap canvas:active{cursor:grabbing}.drop-overlay{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;pointer-events:none;transition:opacity .3s;border:1.5px dashed rgba(255,255,255,.18);background:#00000073}.drop-overlay.hidden{opacity:0;pointer-events:none}.drop-icon{font-size:2em;opacity:.7;margin-bottom:4px}.drop-title{font-size:14px;font-weight:700;color:#ffffffe6;letter-spacing:.06em;text-shadow:0 1px 8px rgba(0,0,0,.8)}.drop-sub{font-size:11px;color:#ffffff8c;text-shadow:0 1px 4px rgba(0,0,0,.8)}.disc-wrap.dragover .drop-overlay{border-color:var(--accent);background:#4ecdc40a}.app-controls{width:100%;max-width:600px;padding:16px 24px 0;display:flex;flex-direction:column;gap:10px}.transport{display:flex;align-items:center;gap:8px}.play-wrap{position:relative;flex-shrink:0;width:42px;height:42px}.play-ring{position:absolute;top:-6px;right:-6px;bottom:-6px;left:-6px;border-radius:50%;border:2px solid transparent;border-top-color:var(--accent);border-right-color:var(--accent);opacity:0;pointer-events:none;transition:opacity .5s;filter:drop-shadow(0 0 4px var(--accent))}.play-wrap.playing .play-ring{opacity:.9;animation:ring-spin 1.4s linear infinite}@keyframes ring-spin{to{transform:rotate(360deg)}}.play-btn{width:42px;height:42px;border-radius:50%;background:var(--accent);border:none;color:#000;font-size:15px;cursor:pointer;width:100%;height:100%;display:inline-flex;align-items:center;justify-content:center;transition:transform .1s,box-shadow .15s;box-shadow:0 0 16px var(--accent-glow)}.play-btn:hover:not(:disabled){transform:scale(1.06);box-shadow:0 0 24px var(--accent-glow)}.play-btn:active:not(:disabled){transform:scale(.94)}.play-btn:disabled{background:#333;color:#666;box-shadow:none;cursor:not-allowed}.play-wrap.playing .play-btn{box-shadow:inset 0 2px 6px #00000073,0 0 20px var(--accent-glow);transform:scale(.95)}.time-display{font-family:var(--font-mono);font-size:15px;color:var(--accent);letter-spacing:.04em;margin-right:auto;padding-left:4px}.t-sep{opacity:.4}.action-btn{font-family:var(--font-ui);font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--accent);background:transparent;border:1px solid rgba(78,205,196,.28);border-radius:8px;padding:8px 13px;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s;white-space:nowrap}.action-btn:hover:not(:disabled){background:var(--accent-subtle);border-color:#4ecdc48c;box-shadow:0 0 8px var(--accent-glow)}.action-btn:active:not(:disabled){transform:translateY(1px)}.action-btn:disabled{color:#444;border-color:#2a2a2a;cursor:not-allowed}.action-btn.loading{animation:pulse 1.2s ease-in-out infinite}.action-btn.pulse{animation:encode-pulse 1.8s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.5}50%{opacity:1}}@keyframes encode-pulse{0%,to{border-color:#4ecdc447;box-shadow:none}50%{border-color:var(--accent);box-shadow:0 0 12px var(--accent-glow)}}.speed-row{display:flex;align-items:center;gap:10px}.ctrl-label{font-size:10px;font-weight:700;letter-spacing:.12em;color:var(--text-muted);text-transform:uppercase;min-width:40px}.ctrl-slider{flex:1;height:3px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#ffffff1a;border-radius:2px;outline:none;cursor:pointer}.ctrl-slider::-webkit-slider-thumb{-webkit-appearance:none;width:13px;height:13px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 2px #0006,0 0 6px var(--accent-glow);cursor:pointer}.ctrl-slider::-moz-range-thumb{width:13px;height:13px;border-radius:50%;border:none;background:var(--accent);cursor:pointer}.ctrl-value{font-family:var(--font-mono);font-size:12px;color:var(--accent);min-width:26px;text-align:right}.text-btn{background:none;border:none;color:var(--text-muted);font-size:11px;cursor:pointer;padding:0 4px;margin-left:auto;text-decoration:underline;text-underline-offset:3px;transition:color .15s}.text-btn:hover{color:var(--text-secondary)}input[type=file]{display:none}.status-line{font-size:11px;letter-spacing:.04em;color:var(--text-muted);min-height:16px;transition:color .2s}.status-line.success{color:var(--status-success)}.status-line.error{color:var(--status-error)}.status-line.info{color:var(--status-info)}@media(max-width:520px){.app-header{padding:16px 16px 0}.disc-section{padding:20px 16px 8px}.app-controls{padding:12px 16px 0}.transport{gap:6px;flex-wrap:wrap}.time-display{font-size:13px}.action-btn{padding:7px 10px;font-size:10px}}