/**
 * Little Social - Dialog Component
 * Uses native HTML5 <dialog> with top-layer elevation,
 * accessible focus retention, and modal backdrops.
 */

dialog {
  background-color: var(--surface-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0;
  max-width: 580px;
  width: 90vw;
  box-shadow: var(--shadow-lg);
  margin: auto;
  overflow: hidden;
}

dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--surface-column-header);
}

.dialog-title {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
}

.dialog-body {
  padding: var(--space-4);
  max-height: 75vh;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.dialog-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--border-color);
  background-color: var(--surface-column-header);
}

/* Body without padding, for content that brings its own (e.g. the composer) */
.dialog-body.is-flush {
  padding: 0;
}

dialog .composer {
  border-bottom: none;
}

/* ==========================================================================
   Add Column Picker
   ========================================================================== */
.column-type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--space-2);
}

.column-type-option {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background-color: var(--surface-bg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.column-type-option:hover {
  background-color: var(--surface-card-hover);
}

.column-type-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
}

.column-type-option:has(input:focus-visible) {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

.column-type-option:has(input:checked) {
  border-color: var(--accent-primary);
  background-color: var(--accent-subtle);
}

.column-type-option:has(input:disabled) {
  opacity: 0.5;
  cursor: not-allowed;
}

.column-type-name {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
}

.column-type-name .icon {
  color: var(--accent-primary);
}

.column-type-desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-4);
}

.form-field[hidden] {
  display: none;
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-secondary);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

fieldset.column-type-grid {
  border: none;
  min-inline-size: 0;
}