.button {
  align-items: center;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  font-weight: 700;
  gap: var(--space-2);
  justify-content: center;
  line-height: 1.2;
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button:active:not(:disabled) {
  transform: translateY(0);
}

.button:disabled,
.button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.52;
}

.button-primary {
  background: var(--brand-crimson);
  color: var(--text-on-dark);
}

.button-primary:hover:not(:disabled) {
  background: var(--brand-crimson-hover);
}

.button-secondary {
  background: transparent;
  border-color: var(--border-on-dark);
  color: var(--text-on-dark);
}

.button-secondary:hover:not(:disabled),
.button-ghost:hover:not(:disabled) {
  background: var(--ink-800);
}

.button-ghost {
  background: transparent;
  color: var(--text-on-dark-muted);
}

.button-danger {
  background: var(--status-danger);
  color: var(--text-on-dark);
}

.button-loading {
  cursor: wait;
  position: relative;
}

.button-loading::before,
.loading-spinner {
  animation: ds-spin 700ms linear infinite;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-right-color: transparent;
  content: "";
  height: 16px;
  width: 16px;
}

.icon {
  fill: none;
  flex: 0 0 auto;
  height: 20px;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
  width: 20px;
}

.icon-compact {
  height: 16px;
  width: 16px;
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field + .field {
  margin-top: var(--space-4);
}

.field-label {
  color: var(--text-on-dark);
  font-size: var(--text-sm);
  font-weight: 700;
}

.field-control {
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-sm);
  color: var(--text-on-dark);
  min-height: 44px;
  padding: var(--space-3) var(--space-4);
  width: 100%;
}

.field-control:hover:not(:disabled) {
  border-color: var(--border-on-dark);
}

.field-control:focus-visible {
  border-color: var(--brand-gold);
}

.field-control:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.field-hint,
.field-error {
  font-size: var(--text-xs);
  margin: 0;
  min-height: 1.5em;
}

.field-hint {
  color: var(--text-on-dark-muted);
}

.field-error {
  color: var(--status-danger);
}

.segmented-control,
.tabs {
  display: flex;
  gap: var(--space-1);
}

.segmented-control {
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  padding: var(--space-1);
}

.segmented-control button,
.tab {
  background: transparent;
  border: 0;
  color: var(--text-on-dark-muted);
  cursor: pointer;
  min-height: 44px;
  padding: var(--space-2) var(--space-4);
}

.segmented-control button[aria-selected="true"] {
  background: var(--ink-800);
  border-radius: var(--radius-sm);
  color: var(--text-on-dark);
  font-weight: 700;
}

.tabs {
  border-bottom: 1px solid var(--ink-700);
}

.tab {
  border-bottom: 2px solid transparent;
}

.tab[aria-selected="true"] {
  border-bottom-color: var(--brand-gold);
  color: var(--text-on-dark);
  font-weight: 700;
}

.dialog-backdrop {
  align-items: center;
  background: rgb(0 0 0 / 65%);
  display: flex;
  inset: 0;
  justify-content: center;
  padding: var(--space-4);
  position: fixed;
  z-index: 50;
}

.dialog-card {
  background: var(--ink-850);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  max-height: calc(100dvh - var(--space-8));
  max-width: var(--modal-width);
  overflow-y: auto;
  padding: var(--space-6);
  width: 100%;
}

.status {
  align-items: center;
  border: 1px solid currentColor;
  border-radius: 999px;
  display: inline-flex;
  font-size: var(--text-xs);
  font-weight: 700;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2);
}

.status::before {
  background: currentColor;
  border-radius: 50%;
  content: "";
  height: 7px;
  width: 7px;
}

.status-success { color: var(--status-success); }
.status-warning { color: var(--status-warning); }
.status-danger { color: var(--status-danger); }
.status-info { color: var(--status-info); }

.tooltip {
  display: inline-flex;
  position: relative;
}

.tooltip-content {
  background: var(--ink-800);
  border: 1px solid var(--border-on-dark);
  border-radius: var(--radius-sm);
  bottom: calc(100% + var(--space-2));
  box-shadow: var(--shadow-panel);
  color: var(--text-on-dark);
  font-size: var(--text-xs);
  left: 50%;
  max-width: 240px;
  opacity: 0;
  padding: var(--space-2) var(--space-3);
  pointer-events: none;
  position: absolute;
  transform: translate(-50%, var(--space-1));
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast);
  width: max-content;
  z-index: 20;
}

.tooltip:hover .tooltip-content,
.tooltip:focus-within .tooltip-content {
  opacity: 1;
  transform: translate(-50%, 0);
}

.empty-state,
.loading-state {
  align-items: center;
  border: 1px dashed var(--ink-700);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  justify-content: center;
  min-height: 176px;
  padding: var(--space-6);
  text-align: center;
}

.empty-state p,
.loading-state p {
  color: var(--text-on-dark-muted);
  margin: 0;
  max-width: 52ch;
}

.skeleton {
  animation: ds-pulse 1.4s ease-in-out infinite alternate;
  background: var(--ink-800);
  border-radius: var(--radius-sm);
  height: 14px;
  width: 100%;
}

@keyframes ds-spin {
  to { transform: rotate(360deg); }
}

@keyframes ds-pulse {
  to { opacity: 0.45; }
}

@media (prefers-reduced-motion: reduce) {
  .button:hover:not(:disabled) {
    transform: none;
  }
}

/* Development-only component reference page. */
.component-reference {
  padding-block: var(--space-12);
}

.component-reference main {
  display: grid;
  gap: var(--space-12);
}

.component-reference section {
  border-top: 1px solid var(--ink-700);
  padding-top: var(--space-6);
}

.component-reference h1,
.component-reference h2 {
  font-family: var(--font-display);
}

.component-reference h1 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}

.component-reference h2 {
  font-size: var(--text-xl);
}

.preview {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.preview-column {
  display: grid;
  gap: var(--space-4);
  max-width: var(--content-form);
}

.dialog-preview {
  position: relative;
}