:root{color-scheme:dark;--bg: #07090c;--fg: #e8eaed;--muted: #8b949e;--accent: #66b2ff;--accent-glow: rgba(102, 178, 255, .4);--border: #1e2329;--panel-bg: #0d1117;font-family:Inter,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--fg);overflow-x:hidden}#app{display:grid;grid-template-columns:380px 1fr;min-height:100vh}@media(max-width:900px){#app{grid-template-columns:1fr;grid-template-rows:auto 1fr}.sidebar{order:2;border-right:none!important;border-top:1px solid var(--border)}.canvas-container{order:1;height:50vh;position:sticky;top:0;z-index:10;background:var(--bg)}}.sidebar{background:var(--panel-bg);border-right:1px solid var(--border);padding:2rem;display:flex;flex-direction:column;gap:2rem;overflow-y:auto}header h1{font-size:1.5rem;font-weight:600;letter-spacing:-.01em;margin:0 0 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Devanagari",serif;font-size:.8rem;color:var(--muted)}.preset-label{font-size:.85rem;color:var(--fg);font-weight:500}.preset-tradition{font-size:.7rem;color:var(--accent);letter-spacing:.04em;text-transform:uppercase}.preset:hover .preset-label,.preset:hover .preset-tradition{color:#fff}.preset:hover{border-color:var(--accent);background:#1c2128}.preset:hover .preset-iast{color:#fff}.preset:hover .preset-deva{color:var(--fg)}.preset:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}.controls-section{display:flex;flex-direction:column;gap:1.5rem;margin-top:auto}.timeline-container{display:flex;flex-direction:column;gap:.5rem}.timeline-container 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input[type=range]{width:80px}.controls output{min-width:1.5rem;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:500}.playback button,#export-btn{font-family:inherit;font-size:.85rem;font-weight:500;padding:.4rem .8rem;border:1px solid var(--border);border-radius:6px;background:#161b22;color:var(--fg);cursor:pointer;transition:all .15s}.playback button:hover,#export-btn:hover{border-color:var(--accent);background:#1c2128;color:#fff}.playback button:focus-visible,#export-btn:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}.playback button:disabled,#export-btn:disabled{opacity:.5;cursor:not-allowed}.wave-toggle{display:flex;align-items:center;gap:.4rem;font-size:.85rem;color:var(--muted);cursor:pointer;-webkit-user-select:none;user-select:none}.wave-toggle 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