:root{color-scheme:light;--bg: #f4f6ec;--panel: #fcfcf7;--line: #cfd8bc;--text: #1f2a18;--muted: #516248;--drop: #d3e9af}*{box-sizing:border-box}body{margin:0;font-family:Avenir Next,Segoe UI,sans-serif;background:radial-gradient(circle at top left,#edf6d6 0%,var(--bg) 48%,#f8f2df 100%);color:var(--text)}.app-shell{max-width:1280px;margin:0 auto;padding:16px;min-height:100vh;display:grid;gap:12px;grid-template-rows:auto auto auto 1fr auto auto auto auto}.topbar{display:flex;justify-content:space-between;align-items:flex-end;gap:16px}.brand h1{margin:0;font-size:1.4rem}.brand p{margin:4px 0 0;color:var(--muted)}.import-group{display:flex;gap:8px;align-items:center}.toolbar,.waveform-panel,.statusbar{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px}.toolbar{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.view-controls{justify-content:space-between;gap:16px}.view-controls-left{display:inline-flex;gap:8px;flex-wrap:wrap;align-items:center}.format-controls{margin-left:auto;display:inline-flex;gap:8px;flex-wrap:wrap;align-items:center}.format-controls-title{font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}label{display:inline-flex;gap:6px;align-items:center;font-size:.9rem}input[type=text],input[type=number],select{min-width:120px;padding:6px;border:1px solid var(--line);border-radius:6px;background:#fff}input[type=number]{width:88px;min-width:88px}button,input[type=file]{border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--text);padding:7px 10px;cursor:pointer}button:hover{border-color:#95a777}button:active{transform:translateY(1px)}button:disabled{opacity:.45;cursor:not-allowed}.time-readout{margin-left:auto;display:inline-flex;gap:6px;align-items:center;font-variant-numeric:tabular-nums}.waveform-panel{padding:0;overflow:hidden}#waveformCanvas{display:block;width:100%;height:min(52vh,420px);background:linear-gradient(180deg,#fbfbf6,#eef4dc);cursor:crosshair;touch-action:none}body.drop-active #waveformCanvas{box-shadow:inset 0 0 0 3px var(--drop)}.statusbar{display:flex;justify-content:space-between;gap:8px;font-size:.9rem;color:var(--muted)}@media(max-width:860px){.topbar{flex-direction:column;align-items:flex-start}.view-controls{justify-content:flex-start}.format-controls,.time-readout{margin-left:0}.statusbar{flex-direction:column}}