/* Material Design 3 Card Component
 * ==========================================================================
 * MD3 Cards are containers for related content and actions
 * Reference: https://m3.material.io/components/cards
 */

/* Base Card
 * -------------------------------------------------------------------------- */

.card {
  /* Structure */
  display: flex;
  flex-direction: column;
  position: relative; /* Positioning context for dropdowns, badges, etc. */

  /* Container surface (Level 2) */
  /* background: var(--color-bg--container); */
  color: var(--color-ink--container);

  /* Appearance */
  border-radius: 12px;
  /* border: 1px solid var(--color-border--light); */
  box-shadow: none; /* Default: outlined card */

  /* Spacing */
  padding: 0;
  overflow: hidden;

  /* Interaction */
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Card Variants
 * -------------------------------------------------------------------------- */

/* Card with menu - allows dropdown overflow */
.card--has-menu {
  overflow: visible;
}

/* Elevated Card - higher emphasis */
.card--elevated {
  border: none;
  box-shadow:
    0 1px 2px 0 oklch(0 0 0 / 0.3),
    0 1px 3px 1px oklch(0 0 0 / 0.15);
}

.card--elevated:hover {
  box-shadow:
    0 2px 4px 0 oklch(0 0 0 / 0.3),
    0 4px 6px 2px oklch(0 0 0 / 0.15);
}

/* Filled Card - colored background */
.card--filled {
  border: none;
  background: var(--color-bg--surface);
  box-shadow: none;
}

/* Outlined Card (default) - lower emphasis */
.card--outlined {
  border: 1px solid var(--color-border--light);
  box-shadow: none;
}

/* Interactive Card - clickable/selectable */
.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  background: oklch(from var(--color-bg--container) calc(l * 0.95) c h);
}

.card--interactive:active {
  background: oklch(from var(--color-bg--container) calc(l * 0.9) c h);
}

.card--interactive:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Action Card - entire card clickable via stretched link */
.card--action {
  position: relative;
  cursor: pointer;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.card--action:hover {
  background: oklch(from var(--color-bg--container) calc(l * 0.95) c h);
}

.card--action:has(.coverall:hover) {
  transform: translateY(-2px);
}

.card--action.card--elevated:has(.coverall:hover) {
  box-shadow:
    0 4px 8px 0 oklch(0 0 0 / 0.3),
    0 6px 12px 2px oklch(0 0 0 / 0.15);
}

/* Coverall link pattern - stretches link to cover entire parent */
.coverall {
  position: static;
}

.coverall::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: var(--layer-base);
}

/* Ensure parent of coverall has position relative */
.coverall:not(:root) {
  /* Triggers parent positioning context */
}

*:has(> .coverall) {
  position: relative;
}

/* Ensure other interactive elements stay above coverall */
.card--action button,
.card--action a:not(.coverall),
.card--action [role="button"] {
  position: relative;
  z-index: var(--layer-decorative);
}

/* Selected state */
.card--selected {
  border-color: var(--color-primary);
  background: var(--color-bg--primary-container);
  color: var(--color-ink--primary-container);
}

/* Card Elements
 * -------------------------------------------------------------------------- */

/* Card Media (image/video) */
.card__media {
  position: relative;
  width: 100%;
  overflow: hidden;

  /* Default 16:9 aspect ratio */
  aspect-ratio: 16 / 9;

  /* Reset spacing */
  margin: 0;
  padding: 0;
}

.card__media img,
.card__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Media variants */
.card__media--square {
  aspect-ratio: 1;
}

.card__media--wide {
  aspect-ratio: 21 / 9;
}

.card__media--portrait {
  aspect-ratio: 3 / 4;
}

/* Card Header */
.card__header {
  display: flex;
  align-items: flex-start;
  padding: 1rem;
  gap: 1rem;
}

.card__header--dense {
  padding: 0.75rem;
}

/* Card Avatar (for header) */
.card__avatar {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-bg--primary-container);
  color: var(--color-ink--primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
}

/* Card Header Text */
.card__header-text {
  flex: 1;
  min-width: 0; /* Enable text truncation */
}

.card__headline {
  font-size: var(--font-size-small);
  font-weight: 500;
  line-height: 1.5;
  margin: 0 0 0.125rem;
}

.card__subhead {
  font-size: var(--font-size-x-small);
  line-height: 1.25;
  opacity: 0.7;
  margin: 0;
}

/* Card Content */
.card__content {
  padding: 1rem;
  flex: 1;
}

.card__content--dense {
  padding: 0.75rem;
}

/* Remove top padding if content follows media */
.card__media + .card__content {
  padding-top: 0.75rem;
}

/* Card Title (when in content) */
.card__title {
  font-size: var(--font-size-medium);
  font-weight: 500;
  line-height: 1.6;
  margin: 0 0 0.5rem;
}

/* Card Supporting Text */
.card__supporting-text {
  font-size: var(--font-size-x-small);
  line-height: 1.5;
  opacity: 0.8;
  margin: 0;
}

/* Card Actions */
.card__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  min-height: 52px;
}

.card__actions--end {
  justify-content: flex-end;
}

.card__actions--between {
  justify-content: space-between;
}

.card__actions--vertical {
  flex-direction: column;
  align-items: stretch;
}

/* Action groups within actions */
.card__action-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Icon buttons in actions */
.card__actions .button--icon-only {
  margin: -0.25rem 0; /* Compensate for button padding */
}

/* Divider between sections */
.card__divider {
  height: 1px;
  background: var(--color-border--light);
  margin: 0;
}

/* Card Grid Layout
 * -------------------------------------------------------------------------- */

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.card-grid--2-col {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.card-grid--3-col {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.card-grid--4-col {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

/* Card List Layout
 * -------------------------------------------------------------------------- */

.card-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Horizontal Card (for lists) */
.card--horizontal {
  flex-direction: row;
  overflow: visible;
}

.card--horizontal .card__media {
  width: 120px;
  height: auto;
  aspect-ratio: 1;
  flex-shrink: 0;
  border-radius: 12px 0 0 12px; /* Round only left corners */
  overflow: hidden;
}

.card--horizontal .card__content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Compact Card */
.card--compact {
  /* Tighter spacing throughout */
}

.card--compact .card__content {
  padding: 0.5rem;
}

.card--compact .card__actions {
  padding: 0.25rem 0.5rem;
  min-height: 40px;
}

/* Color Variants
 * -------------------------------------------------------------------------- */

.card--primary {
  background: var(--color-bg--primary-container);
  color: var(--color-ink--primary-container);
  border-color: transparent;
}

.card--secondary {
  background: var(--color-bg--secondary-container);
  color: var(--color-ink--secondary-container);
  border-color: transparent;
}

.card--tertiary {
  background: var(--color-bg--tertiary-container);
  color: var(--color-ink--tertiary-container);
  border-color: transparent;
}

/* Loading State
 * -------------------------------------------------------------------------- */

.card--loading {
  pointer-events: none;
}

.card--loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-bg--container);
  opacity: 0.7;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Disabled State
 * -------------------------------------------------------------------------- */

.card--disabled {
  opacity: 0.38;
  pointer-events: none;
}

/* Dark mode adjustments
 * -------------------------------------------------------------------------- */

[data-color-scheme="dark"] {
  .card--elevated {
    box-shadow:
      0 1px 3px 1px oklch(0 0 0 / 0.15),
      0 1px 2px 0 oklch(0 0 0 / 0.3);
  }

  .card--elevated:hover {
    box-shadow:
      0 2px 6px 2px oklch(0 0 0 / 0.15),
      0 2px 4px 0 oklch(0 0 0 / 0.3);
  }

  .card--interactive:hover {
    background: oklch(from var(--color-bg--container) calc(l * 1.05) c h);
  }

  .card--interactive:active {
    background: oklch(from var(--color-bg--container) calc(l * 1.1) c h);
  }
}

/* Responsive behavior
 * -------------------------------------------------------------------------- */

@media (max-width: 40em) {
  .card-grid {
    grid-template-columns: 1fr;
  }

  .card--horizontal {
    flex-direction: column;
  }

  .card--horizontal .card__media {
    width: 100%;
    aspect-ratio: 16 / 9;
  }
}

/* Examples of usage:
 * --------------------------------------------------------------------------
 *
 * Basic card with image:
 * <div class="card card--elevated">
 *   <div class="card__media">
 *     <img src="..." alt="...">
 *   </div>
 *   <div class="card__content">
 *     <h3 class="card__title">Card Title</h3>
 *     <p class="card__supporting-text">Supporting text</p>
 *   </div>
 *   <div class="card__actions">
 *     <button class="button button--text">Action</button>
 *   </div>
 * </div>
 *
 * Card with header avatar:
 * <div class="card">
 *   <div class="card__header">
 *     <div class="card__avatar">U</div>
 *     <div class="card__header-text">
 *       <h4 class="card__headline">Headline</h4>
 *       <p class="card__subhead">Subhead</p>
 *     </div>
 *   </div>
 *   <div class="card__content">
 *     <p class="card__supporting-text">Content here</p>
 *   </div>
 * </div>
 *
 * Interactive card:
 * <div class="card card--outlined card--interactive" tabindex="0">
 *   <div class="card__content">
 *     <h3 class="card__title">Clickable Card</h3>
 *   </div>
 * </div>
 *
 * Action card with coverall link:
 * <div class="card card--elevated card--action">
 *   <div class="card__content">
 *     <h3 class="card__title">
 *       <a href="/path" class="coverall">Card Title</a>
 *     </h3>
 *     <p class="card__supporting-text">Entire card is clickable</p>
 *   </div>
 *   <div class="card__actions">
 *     <!-- These buttons remain clickable above the coverall -->
 *     <button class="button button--icon-only">★</button>
 *   </div>
 * </div>
 */