/* Muscle labeler — dark layout */
.page-labeler {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.labeler-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.page-labeler .app {
  display: grid;
  grid-template-columns: 240px 1fr minmax(260px, 300px);
  flex: 1;
  min-height: 0;
  height: calc(100vh - var(--site-header-h));
}

.sidebar {
  background: var(--bg-muted);
  color: var(--text);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.sidebar-title {
  margin: 0;
  padding: 14px 14px 8px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-fg-dim);
}

.image-list {
  list-style: none;
  margin: 0;
  padding: 4px 8px 16px;
  overflow-y: auto;
  flex: 1;
}

.image-list::-webkit-scrollbar {
  width: 8px;
}

.image-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-muted);
}

.image-card {
  display: block;
  width: 100%;
  padding: 8px 10px;
  margin-bottom: 2px;
  text-align: left;
  font: inherit;
  font-size: 14px;
  line-height: 1.4;
  color: var(--text);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.1s ease;
}

.image-card:hover {
  background: var(--bg-hover);
}

.image-card:focus-visible {
  outline: 2px solid var(--color-fg-muted);
  outline-offset: 2px;
}

.image-card.active {
  background: var(--accent-muted);
  color: var(--text);
  font-weight: 500;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--app-accent) 40%, var(--color-border));
}

.main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--bg);
}

.main-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 48px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border-divider);
  background: var(--color-bg-page);
}

.main-title {
  margin: 0;
  font-family: var(--font-inter), system-ui, sans-serif;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text);
}

.toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 44px;
  padding: 0.45rem 0.85rem;
  font-family: var(--font-inter), system-ui, sans-serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-fg-soft);
  transition: all 120ms linear;
}

@media (min-width: 640px) {
  .btn {
    min-height: 0;
    padding: 0.5rem 1rem;
    font-size: 10px;
    letter-spacing: 0.2em;
  }
}

.btn:focus-visible {
  outline: 2px solid var(--color-fg-muted);
  outline-offset: 2px;
}

.btn-secondary:hover {
  border-color: var(--color-border-hover);
  color: var(--color-fg);
}

.btn-primary {
  border-color: var(--color-border);
  color: var(--color-fg-soft);
}

.btn-primary:hover {
  border-color: var(--color-border-hover);
  color: var(--color-fg);
}

.btn-danger {
  color: var(--color-error-text);
  border-color: var(--color-border-input-error);
}

.btn-danger:hover {
  border-color: var(--color-border-input-error-focus);
  color: var(--color-fg);
  background: var(--danger-bg);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.main-scroll {
  flex: 1;
  overflow: auto;
  padding: 18px 20px 28px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.image-stage {
  position: relative;
  display: inline-block;
  max-width: 100%;
  line-height: 0;
  background: var(--bg-deep);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-section);
}

#main-image {
  display: block;
  max-width: 100%;
  height: auto;
  vertical-align: top;
  cursor: crosshair;
  user-select: none;
  border-radius: var(--radius-sm);
}

.labels-overlay {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 2;
  border-radius: var(--radius-sm);
}

.label.label-pin {
  position: absolute;
  pointer-events: auto;
  cursor: grab;
  left: 0;
  top: 0;
  transform: translate(-50%, -100%);
  z-index: 3;
}

.label.label-pin:active {
  cursor: grabbing;
}

.label.label-pin.is-selected .label-pin-svg {
  filter: drop-shadow(0 0 8px var(--accent-ring));
}

.label-pin-svg {
  display: block;
  width: 38px;
  height: 48px;
  overflow: visible;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.5));
}

.label-pin-svg.label-pin-selected path {
  stroke: var(--accent-bright);
  stroke-width: 2.5;
}

.image-hint {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--color-fg-body);
  max-width: 44rem;
  padding: 10px 12px;
  background: var(--color-bg-page);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-section);
}

.image-hint.image-hint-neutral {
  background: var(--bg-muted);
  border-color: var(--border);
  color: var(--text-secondary);
}

.image-hint.image-hint-quiz {
  background: var(--accent-muted);
  border-color: color-mix(in srgb, var(--app-accent) 35%, var(--color-border-section));
  color: var(--color-fg);
}

.image-hint.image-hint-success {
  background: var(--success-bg);
  border-color: rgba(107, 207, 156, 0.35);
  color: var(--text);
}

.quiz-feedback-banner {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.45;
  max-width: 44rem;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-muted);
  color: var(--text);
}

.quiz-feedback-ok {
  border-color: rgba(107, 207, 156, 0.4);
  background: var(--success-bg);
}

.quiz-feedback-bad {
  border-color: var(--danger-border);
  background: var(--danger-bg);
}

.quiz-feedback-warn {
  border-color: color-mix(in srgb, var(--app-accent) 45%, var(--color-border-section));
  background: color-mix(in srgb, var(--app-accent) 10%, var(--color-bg-page));
}

.quiz-feedback-neutral {
  border-color: var(--border);
  background: var(--bg-muted);
}

.quiz-miss {
  position: absolute;
  pointer-events: none;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 2px solid var(--danger);
  background: rgba(224, 112, 112, 0.2);
  z-index: 5;
  animation: quiz-miss-pop 0.65s ease-out forwards;
}

.quiz-miss::after {
  content: '×';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -54%);
  font-size: 18px;
  font-weight: 700;
  color: var(--danger);
  line-height: 1;
}

@keyframes quiz-miss-pop {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.65);
  }
  35% {
    opacity: 1;
  }
  100% {
    opacity: 0.9;
    transform: translate(-50%, -50%) scale(1);
  }
}

#main-image.image-quiz-mode {
  cursor: crosshair;
}

.btn-quiz-active {
  background: var(--accent-muted);
  border-color: var(--accent-ring);
  color: var(--accent-bright);
}

.panel {
  background: var(--bg-muted);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.panel-title {
  margin: 0;
  padding: 14px 14px 6px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-fg-dim);
}

.panel-hint {
  margin: 0;
  padding: 0 14px 10px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--text-tertiary);
}

.muscle-list {
  list-style: none;
  margin: 0;
  padding: 4px 10px 16px;
  overflow-y: auto;
  flex: 1;
}

.muscle-list::-webkit-scrollbar {
  width: 8px;
}

.muscle-list::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-muted);
}

.muscle-item {
  padding: 0;
  margin-bottom: 6px;
  margin-left: 0;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: var(--bg-elevated);
  transition:
    background 0.12s ease,
    border-color 0.12s ease,
    box-shadow 0.12s ease;
}

.muscle-item.is-selectable {
  cursor: pointer;
}

.muscle-item.is-selectable:hover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
}

.muscle-item.placed {
  border-color: rgba(107, 207, 156, 0.22);
}

.muscle-item.muscle-selected {
  border-color: color-mix(in srgb, var(--app-accent) 50%, var(--color-border));
  background: var(--accent-muted);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--app-accent) 35%, transparent);
}

.muscle-item .muscle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
}

.muscle-num {
  font-weight: 600;
  min-width: 1.6em;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}

.muscle-item.muscle-selected .muscle-num {
  color: var(--accent-bright);
}

.muscle-name-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.muscle-name {
  flex: 1;
  min-width: 0;
  color: var(--text);
  font-size: 14px;
}

.muscle-copy-btn {
  flex-shrink: 0;
  padding: 2px 7px;
  font: inherit;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text-secondary);
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  transition:
    background 0.1s ease,
    color 0.1s ease,
    border-color 0.1s ease;
}

.muscle-copy-btn:hover:not(:disabled) {
  background: var(--bg-elevated);
  color: var(--text);
  border-color: var(--border-strong);
}

.muscle-copy-btn:disabled {
  cursor: default;
  opacity: 0.85;
}

.muscle-status {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-tertiary);
}

.muscle-item.placed .muscle-status {
  color: var(--success);
}

.muscle-item.muscle-selected .muscle-status {
  color: var(--accent-bright);
  font-weight: 600;
}

@media (max-width: 900px) {
  .page-labeler .app {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    height: auto;
    min-height: calc(100vh - var(--site-header-h));
  }

  .sidebar .image-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .image-card {
    width: auto;
    flex: 1 1 140px;
  }
}