.lab-body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  padding-bottom: 2rem;
}

.lab-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(5,5,8,.92);
  position: sticky;
  top: 0;
  z-index: 40;
}

.lab-header-actions { margin-left: auto; display: flex; gap: 0.4rem; flex-wrap: wrap; }

.lab-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

.lab-field {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-size: 0.68rem;
  color: var(--text-muted);
}

.lab-field input[type="range"] { width: 90px; }

.lab-import { cursor: pointer; margin-left: auto; }

.lab-drop {
  margin: 1rem 1.25rem;
  padding: 2rem;
  border: 1px dashed rgba(212,175,55,.35);
  border-radius: var(--radius-lg);
  text-align: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.lab-drop.drag { border-color: var(--gold); background: var(--gold-soft); color: var(--gold); }

.lab-timeline {
  margin: 0 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  min-height: 220px;
}

.lab-track {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0,0,0,.35);
  overflow: hidden;
}

.lab-track.active { border-color: var(--gold); }

.lab-track-head {
  display: flex;
  justify-content: space-between;
  padding: 0.35rem 0.65rem;
  font-size: 0.78rem;
  background: rgba(139,61,204,.12);
}

.lab-track canvas {
  display: block;
  width: 100%;
  height: 72px;
  cursor: pointer;
}

.lab-inspector {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: min(300px, calc(100vw - 2rem));
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  z-index: 30;
  box-shadow: 0 16px 40px rgba(0,0,0,.45);
}

.lab-inspector h3 { font-family: var(--font-accent); margin-bottom: 0.5rem; }
.lab-inspector label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 0.55rem;
}
.lab-inspector input {
  padding: 0.4rem 0.55rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
}
.lab-inspector-row { display: flex; gap: 0.35rem; flex-wrap: wrap; margin-top: 0.35rem; }
.lab-muted { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.75rem; }
.lab-shortcuts { margin-top: 0.85rem; font-size: 0.7rem; color: var(--text-muted); line-height: 1.4; }

@media (max-width: 800px) {
  .lab-inspector { position: static; width: auto; margin: 1rem; }
  .lab-header-actions .btn-sm:nth-child(n+3) { display: none; }

  .lab-header {
    flex-wrap: wrap;
    padding-top: max(0.75rem, env(safe-area-inset-top));
  }

  .lab-header-actions {
    width: 100%;
    margin-left: 0;
    justify-content: flex-start;
  }

  .lab-toolbar {
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }

  .lab-field input[type="range"] { width: 72px; }

  .lab-drop,
  .lab-timeline {
    margin-left: 1rem;
    margin-right: 1rem;
  }

  .lab-track canvas { height: 64px; }

  .lab-import { margin-left: 0; width: 100%; text-align: center; }
}

@media (max-width: 480px) {
  .lab-header-actions .btn { width: 100%; justify-content: center; }
  .lab-shortcuts { display: none; }
}