/**
 * @file
 * Global CSS utilities for AI module components.
 *
 * Uses Drupal core CSS custom properties for consistency across admin themes.
 * All classes prefixed with 'ai-' to prevent conflicts.
 */
:root {
  --ai-font-size-base: var(--font-size-base);
  --ai-font-size-s: var(--font-size-s);
  --ai-font-size-xs: var(--font-size-xs);
  --ai-font-size-xxs: var(--font-size-xxs);

  --ai-font-size-h1: var(--font-size-h1);
  --ai-font-size-h2: var(--font-size-h2);
  --ai-font-size-h3: var(--font-size-h3);
  --ai-font-size-h4: var(--font-size-h4);
  --ai-font-size-h5: var(--font-size-h5);
  --ai-font-size-h6: var(--font-size-h6);

  --ai-text-color-muted: var(--color-text-light);

  /* Icon size scale (used by .ai-icon and .ai-icon-button). */
  --ai-icon-size: 1.25rem;
  --ai-icon-size-lg: 2rem;
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */

/**
 * Font size utilities matching Drupal CSS variable names.
 */

.ai-font-size-base {
  font-size: var(--ai-font-size-base);
}

.ai-font-size-s {
  font-size: var(--ai-font-size-s);
}

.ai-font-size-xs {
  font-size: var(--ai-font-size-xs);
}

.ai-font-size-xxs {
  font-size: var(--ai-font-size-xxs);
}

/**
 * Color utility for muted/secondary text.
 */
.ai-text-muted {
  color: var(--ai-text-color-muted);
}

/**
 * Semantic class for description text.
 * Combines font-size, muted color, and optimized text wrapping for helper text.
 */
.ai-description {
  font-size: var(--ai-font-size-xs);
  line-height: 1.25;
  color: var(--ai-text-color-muted);
  hyphens: none;
  text-wrap: balance;
}

/**
 * Heading size overrides.
 * Use these to visually resize headings while keeping semantic HTML.
 * Maps to Drupal core --font-size-h* variables.
 */
.ai-heading-h1 {
  font-size: var(--ai-font-size-h1);
}

.ai-heading-h2 {
  font-size: var(--ai-font-size-h2);
}

.ai-heading-h3 {
  font-size: var(--ai-font-size-h3);
}

.ai-heading-h4 {
  font-size: var(--ai-font-size-h4);
}

.ai-heading-h5 {
  font-size: var(--ai-font-size-h5);
}

.ai-heading-h6 {
  font-size: var(--ai-font-size-h6);
}

/**
 * Select element width utilities.
 * Uses select.class for specificity over theme styles while remaining class-based.
 */
select.ai-select,
select.ai-select--narrow,
select.ai-select--wide {
  max-width: 200px;
}

select.ai-select--narrow {
  max-width: 150px;
}

select.ai-select--wide {
  max-width: 300px;
}

/* ==========================================================================
   Icon button (IconButton pattern)
   ========================================================================== */

/**
 * Base styles for icon-only button/link.
 * Follows IconButton pattern with subtle default border:
 * - Faint border by default for visibility
 * - Background appears on hover/active
 * - Clear focus ring for keyboard navigation
 *
 * Icon size matches Gin toolbar icons (20px optical).
 * Use with .ai-icon--* for the icon. Uses Gin CSS variables with fallbacks.
 */
.ai-icon-button {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: calc(var(--ai-icon-size) + 0.5rem);
  height: calc(var(--ai-icon-size) + 0.5rem);
  padding: 0.25rem;
  color: var(--gin-icon-color, var(--ai-text-color-muted));
  text-decoration: none;
  background-color: transparent;
  background-repeat: no-repeat;
  background-position: center;
  background-size: var(--ai-icon-size) var(--ai-icon-size);
  border: 1px solid var(--color-gray-200, rgba(0, 0, 0, 0.08));
  border-radius: var(--gin-border-m, 0.5rem);
  transition: background-color 0.15s var(--gin-easing, cubic-bezier(0.19, 1, 0.22, 1)),
              border-color 0.15s var(--gin-easing, cubic-bezier(0.19, 1, 0.22, 1));
  cursor: pointer;
}

/* Icon button states */
.ai-icon-button:hover {
  background-color: var(--color-gray-100, rgba(0, 0, 0, 0.06));
  border-color: var(--color-gray-200, rgba(0, 0, 0, 0.08));
}

.ai-icon-button:focus {
  outline: none;
}

.ai-icon-button:focus-visible {
  background-color: var(--color-gray-100, rgba(0, 0, 0, 0.06));
  outline: 2px solid var(--gin-color-focus, var(--color-focus, #007dfacc));
  outline-offset: 2px;
}

.ai-icon-button:active {
  background-color: var(--color-gray-200, rgba(0, 0, 0, 0.12));
  border-color: var(--color-gray-300, rgba(0, 0, 0, 0.15));
}

.ai-icon-button--lg {
  --ai-icon-size: var(--ai-icon-size-lg);
}

/**
 * Icon block - universal icon modifiers (BEM).
 * Icons are background-image only; use with a component that provides
 * size and background positioning (e.g. .ai-icon-button) or with .ai-icon
 * for standalone/inline use. Keeps icons reusable across contexts.
 */
.ai-icon {
  display: inline-block;
  flex-shrink: 0;
  width: var(--ai-icon-size);
  height: var(--ai-icon-size);
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
}

.ai-icon--lg {
  --ai-icon-size: var(--ai-icon-size-lg);
}

.ai-icon--provider {
  background-image: url('../icons/plugs.svg');
}

.ai-icon--model {
  background-image: url('../icons/cube.svg');
}

.ai-icon--external {
  background-image: url('../icons/external.svg');
}

.ai-icon--settings {
  background-image: url('../icons/gear.svg');
}

.ai-icon--supported {
  background-image: url('../icons/checkmark-circle.svg');
}

.ai-icon--not-supported {
  background-image: url('../icons/x-circle.svg');
}

.ai-icon--warning {
  background-image: url('../icons/warning.svg');
}

.ai-icon--option {
  background-image: url('../icons/option.svg');
}

.ai-icon--arrow-left-up {
  background-image: url('../icons/arrow-left-up.svg');
}

.ai-icon--cloud-arrow-down {
  background-image: url('../icons/cloud-arrow-down.svg');
}

.ai-icon--file {
  background-image: url('../icons/file.svg');
}

/* ==========================================================================
   Pills
   ========================================================================== */

/**
 * Pills.
 */
.ai-pill {
  font-size: var(--gin-font-size-xxs, .75rem);
  font-weight: var(--gin-font-weight-semibold, 600);
  display: inline-block;
  padding: .125em .75em;
  vertical-align: .125em;
  border: 1px solid transparent;
  border-radius: var(--gin-border-l, .75rem);
  color: var(--messages-fg-color);
  background: var(--messages-bg-color);
  text-transform: capitalize;
}

.ai-pill.light {
  color: var(--gin-status-text, white);
  background: var(--gin-status-bg, var(--color-gray-400));
}

.ai-pill.success {
  color: var(--gin-status-success-text, var(--messages-fg-color));
  background-color: var(--gin-status-success-bg, var(--messages--status-color));
}

.ai-pill.danger {
  color: var(--gin-status-danger-text, var(--messages-fg-color));
  background: var(--gin-status-danger-bg, var(--messages--error-color));
}

.ai-pill.warning {
  color: var(--gin-status-warning-text, var(--messages-fg-color));
  background: var(--gin-status-warning-bg, var(--messages--warning-color));
}
