.collider-debug-panel {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 19;
  display: none;
  flex-direction: column;
  width: min(300px, calc(100vw - 24px));
  max-height: min(68vh, calc(100% - 32px));
  border-radius: var(--radius-md);
  background: var(--color-bg-panel);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
  pointer-events: auto;
}

.collider-debug-panel.is-open {
  display: flex;
}

.cd-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.cd-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: rgba(120, 180, 255, 0.95);
}

.cd-close {
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}

.cd-close:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.cd-body {
  padding: 10px 12px 12px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cd-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cd-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.cd-btn {
  padding: 6px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-ui);
  color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.cd-btn:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.cd-btn.is-on {
  color: #fff;
  border-color: rgba(120, 180, 255, 0.8);
  background: rgba(60, 100, 160, 0.35);
}

.cd-range {
  width: 100%;
  accent-color: rgba(120, 180, 255, 0.9);
}

.cd-value {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.cd-layers {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cd-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}

.cd-check input {
  accent-color: rgba(120, 180, 255, 0.9);
}

.cd-check input:disabled + span {
  opacity: 0.45;
}

.cd-readout {
  font-family: var(--font-mono, 'Consolas', monospace);
  font-size: 0.68rem;
  line-height: 1.45;
  color: var(--color-text-muted);
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px;
  white-space: pre-wrap;
  min-height: 72px;
}

.cd-readout--ok {
  color: rgba(120, 200, 140, 0.95);
}

.cd-readout--blocked {
  color: rgba(220, 120, 120, 0.95);
}

.cd-hint {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  opacity: 0.8;
}