:root{--bg: #0b0d12;--surface: #14171f;--surface-2: #1c202b;--border: #262b38;--text: #e7e9ee;--text-dim: #9aa1b2;--accent: #6d8dff}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.muted{color:var(--text-dim);font-size:13px}.app{max-width:1280px;margin:0 auto;padding:24px 20px 60px}.header h1{margin:0 0 6px;letter-spacing:-.02em}.header p{max-width:680px;margin:0 0 20px}.layout{display:flex;gap:20px;flex-wrap:wrap;align-items:flex-start}.canvas-wrap{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px;flex:1 1 600px}.canvas-wrap canvas{width:100%;height:auto;border-radius:8px;display:block;cursor:crosshair}.loading{padding:60px 0;text-align:center;color:var(--text-dim)}.sidebar{flex:0 0 300px;display:flex;flex-direction:column;gap:14px}.panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px}.panel h3{margin:0 0 10px;font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-dim);display:flex;align-items:center;gap:8px}.stat-row{display:flex;justify-content:space-between;padding:4px 0;font-size:14px;border-top:1px solid var(--border)}.stat-row:first-of-type{border-top:none}.controls{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}.btn{background:var(--accent);color:#05070d;border:none;border-radius:8px;padding:8px 14px;font-weight:600;cursor:pointer}.btn-ghost{background:transparent;color:var(--text-dim);border:1px solid var(--border);border-radius:8px;padding:8px 12px;cursor:pointer}.btn-ghost.active{color:var(--text);border-color:var(--accent)}.speed-group{display:flex;gap:4px}.legend{display:flex;gap:14px;margin-top:6px;font-size:12px;color:var(--text-dim)}.legend i{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:5px}.hue-swatch{width:12px;height:12px;border-radius:50%;display:inline-block}.weight-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:2px}.weight-cell{aspect-ratio:1;border-radius:2px}