/**
 * ============================================================================
 * TALK SNIPPET STYLES - Makeability Lab
 * ============================================================================
 *
 * Styles for talk/presentation cards used across the site.
 *
 * ACCESSIBILITY:
 *   - All text colors meet WCAG 2.1 AA contrast requirements
 *   - Interactive elements have visible focus states
 *   - Links have hover states for discoverability
 *
 * DEPENDENCIES:
 *   - design-tokens.css must be loaded first
 *
 * STRUCTURE:
 *   .talk-card
 *   ├── .talk-thumbnail-container
 *   │   └── .talk-thumbnail-image
 *   └── .talk-info
 *       ├── .talk-title
 *       ├── .talk-venue
 *       ├── .talk-location
 *       ├── .talk-speakers
 *       └── .talk-download-links
 *
 * @version 2.0.0 - Refactored with design tokens
 * @author Makeability Lab
 * ============================================================================
 */


/* =============================================================================
   TALK CARD CONTAINER
   ============================================================================= */

.talk-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 320px;
  margin-bottom: var(--space-5);
}


/* =============================================================================
   TALK THUMBNAIL
   ============================================================================= */

.talk-thumbnail-container {
  position: relative;
  width: 100%;
  height: 180px;
  overflow: hidden;
  background-color: var(--color-bg-surface);
  border-radius: var(--border-radius-sm);
}

.talk-thumbnail-link {
  display: block;
  width: 100%;
  height: 100%;
}

.talk-thumbnail-link:focus {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

.talk-thumbnail-image {
  width: 100%;
  height: auto;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  object-fit: cover;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  transition: transform var(--transition-normal);
}

.talk-thumbnail-link:hover .talk-thumbnail-image {
  transform: translate(-50%, -50%) scale(1.03);
}

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .talk-thumbnail-image {
    transition: none;
  }
  
  .talk-thumbnail-link:hover .talk-thumbnail-image {
    transform: translate(-50%, -50%);
  }
}


/* =============================================================================
   TALK INFO
   ============================================================================= */

.talk-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-top: var(--space-2);
}


/* =============================================================================
   TALK TITLE
   ============================================================================= */

.talk-title {
  margin: 0 0 var(--space-1) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
}

.talk-title a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.talk-title a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.talk-title a:focus {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}


/* =============================================================================
   TALK VENUE & LOCATION
   ============================================================================= */

.talk-venue {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  /* Prevent long venue names from breaking grid layout */
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.talk-location {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}


/* =============================================================================
   TALK SPEAKERS
   ============================================================================= */

.talk-speakers {
  margin: 0 0 var(--space-2) 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.talk-speakers a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.talk-speakers a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.talk-speakers a:focus {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}


/* =============================================================================
   TALK DOWNLOAD LINKS
   =============================================================================
   Pill-style links matching publication download links.
   ============================================================================= */

.talk-download-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: var(--font-size-xxs);
}

.talk-download-links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-bg-surface);
  border-radius: var(--border-radius-full);
  color: var(--color-link);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.talk-download-links a:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-link-hover);
  text-decoration: none;
}

.talk-download-links a:focus {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

.talk-download-links a i {
  font-size: 0.95em;
}


/* =============================================================================
   RESPONSIVE GRID LAYOUT
   =============================================================================
   When used in a grid context (e.g., person page).
   ============================================================================= */

.talks-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

@media (max-width: 1200px) {
  .talks-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 992px) {
  .talks-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 576px) {
  .talks-grid {
    grid-template-columns: 1fr;
  }
}