.btn {
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  color: var(--color-ink);
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 500;
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
}

.btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-strong);
}

.btn:active {
  transform: translateY(1px);
}

.btn.primary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
}

.btn.primary:hover {
  background-color: var(--color-accent-strong);
  border-color: var(--color-accent-strong);
  color: #ffffff;
}

.btn.ghost {
  background-color: transparent;
}

.btn.small {
  padding: 8px 14px;
  font-size: 0.9rem;
}

.tab {
  border: none;
  background: none;
  padding: 6px 4px;
  font-weight: 500;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tab:hover {
  color: var(--color-accent-strong);
}

.tab.active {
  color: var(--color-ink);
  border-color: var(--color-accent);
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.toggle input {
  appearance: none;
  width: 36px;
  height: 20px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface);
  position: relative;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.toggle input::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-accent);
  transition: transform var(--transition-fast);
}

.toggle input:checked {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.toggle input:checked::after {
  transform: translateX(16px);
}

.empty-state {
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border);
  background-color: var(--color-surface-alt);
  color: var(--color-muted);
  padding: var(--space-5);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.status.success {
  background-color: #e7f4ee;
  border-color: #c7e6d5;
  color: var(--color-success);
}

.status.error {
  background-color: #fdecea;
  border-color: #f7c3bd;
  color: var(--color-error);
}

.status.warning {
  background-color: #fff2e1;
  border-color: #f9d6a8;
  color: var(--color-warning);
}

.status.info {
  background-color: #eef2f6;
  border-color: #d7dee6;
  color: var(--color-muted);
}

.stat {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  padding: var(--space-3);
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: var(--space-1);
}

.tree {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tree-node {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  padding: var(--space-2) var(--space-3);
}

.tree-node summary {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  cursor: pointer;
  list-style: none;
}

.tree-node summary::-webkit-details-marker {
  display: none;
}

.tree-children {
  margin-top: var(--space-2);
  margin-left: var(--space-3);
  padding-left: var(--space-3);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.tree-leaf {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: #ffffff;
  padding: var(--space-2) var(--space-3);
}

.tree-key {
  font-weight: 600;
}

.tree-value {
  font-family: var(--font-mono);
}

.tree-meta {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
}

.analysis-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-alt);
  padding: var(--space-3);
}

.analysis-card-title {
  font-size: 0.82rem;
  color: var(--color-muted);
}

.analysis-card-value {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-top: var(--space-2);
}

.analysis-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.analysis-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  margin-top: var(--space-4);
}

.analysis-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.analysis-list-item {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.analysis-list-item:last-child {
  border-bottom: none;
}

.analysis-list-item.single {
  justify-content: flex-start;
}

#fileInput {
  display: none;
}