:root { --gap: 10px; --canvas-h: 620px; --border:#e5e7eb; }
.wrap { display: grid; grid-template-columns: 360px 1fr; gap: var(--gap); align-items: start; }
@media (max-width: 767px) { .wrap { grid-template-columns: 1fr; } }
.controls { display:flex; flex-wrap:wrap; gap:var(--gap); align-items:center; margin-bottom:var(--gap); }
.btn { padding:10px 14px; border:none; border-radius:10px; background:#0ea5a0; color:#fff; cursor:pointer; }
.search { flex:1; min-width:200px; padding:8px 10px; border:1px solid var(--border); border-radius:8px; }
.sidebar { border:1px solid var(--border); border-radius:12px; padding:8px; overflow-y:auto; max-height: var(--canvas-h); background:#fff; }
.sidebar details { border:1px solid var(--border); border-radius:10px; padding:6px; margin:6px 0; background:#f9fafb; }
.sidebar summary { font-weight:700; cursor:pointer; }
.muscle { display:block; width:100%; text-align:left; padding:8px 10px; border-radius:8px; background:#fff; margin-top:6px; border:1px solid var(--border); cursor:pointer; }
.muscle:hover { background:#eef2ff; }
.muscle.active { background:#2563eb; color:#fff; border-color:#2563eb; }
.grid { display:grid; grid-template-columns: 1fr; gap: var(--gap); }
@media (min-width: 768px) { .grid { grid-template-columns: repeat(3, minmax(0,1fr)); } }
.canvas { position:relative; width:100%; height: var(--canvas-h); background:#f3f4f6; border-radius:12px; overflow:hidden; }
.canvas img { position:absolute; inset:0; width:100%; height:100%; object-fit:contain; }
.badge { position:absolute; top:8px; left:8px; background:#fff; border:1px solid var(--border); padding:4px 8px; border-radius:8px; font-size:12px; }
.mobile-only { display:none; }
@media (max-width: 767px) { .mobile-only { display:flex; gap:8px; } }
.select { padding:8px 10px; border:1px solid var(--border); border-radius:8px; }
.label { white-space:nowrap; }