:root{--bg-dark:#0f172a;--bg-accent:#1d4ed8;--text:#0f172a;--muted:#475569;--border:#dbe5f1;--panel:#fff;--panel-soft:#f8fafc}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,var(--bg-dark) 0,#111827 300px,#f1f5f9 300px)}a{color:#2563eb}.app-shell{max-width:1160px;margin:0 auto;padding:24px}.app-header{display:flex;justify-content:space-between;align-items:center;gap:14px;color:#fff;margin-bottom:20px}.brand-title{margin:0;font-size:30px}.brand-subtitle{margin:6px 0 0;color:#cbd5e1;font-size:14px}.card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:16px;box-shadow:0 12px 24px rgba(15,23,42,.08)}.card.soft{background:var(--panel-soft)}.grid{display:grid;grid-gap:14px;gap:14px}.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.auto-fit{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.pill-link{text-decoration:none;padding:8px 12px;border-radius:999px;border:1px solid var(--border);color:var(--text);background:#fff}.pill-link.active{background:var(--text);border-color:var(--text);color:#fff}button,input,textarea{font:inherit}input,select,textarea{border:1px solid #cbd5e1;border-radius:10px;padding:10px 12px;width:100%;background:#fff}button{border:1px solid #1d4ed8;border-radius:10px;padding:8px 12px;cursor:pointer;background:#2563eb;color:#fff}button.secondary{background:#fff}button.ghost,button.secondary{color:#1e293b;border-color:#cbd5e1}button.ghost{background:transparent}button:disabled{opacity:.5;cursor:not-allowed}.mixer-grid{display:grid;grid-gap:12px;gap:12px}.mixer-header{display:grid;grid-gap:10px;gap:10px;background:#0f172a;color:#e2e8f0;padding:12px;border-radius:12px}.timecode{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px}.stem-row{border:1px solid var(--border);border-radius:10px;padding:10px;display:grid;grid-gap:8px;gap:8px;background:#fff}.muted,small.muted{color:var(--muted)}@media (max-width:900px){.grid.cols-2{grid-template-columns:1fr}}