/**
 * Project Entry Component
 *
 * Base styles for project entries used across timeline, featured, and other contexts.
 * Uses BEM naming: .project-entry, .project-entry__element, .project-entry--modifier
 *
 * Contexts can customize via CSS custom properties:
 *   --entry-accent: Accent color for stripe (default: --color-accent)
 *   --entry-bg: Background color (default: --color-surface)
 *   --entry-bg-hover: Hover background (default: --color-surface-soft)
 *   --entry-stripe-width: Left border width (default: 3px, set to 0 to hide)
 */

/* =============================================================================
   CSS CUSTOM PROPERTIES - Fluid typography and spacing
   ============================================================================= */

:root {
  /* Fluid typography */
  --entry-text-xs: clamp(0.65rem, 1.5vw, 0.7rem);
  --entry-text-sm: clamp(0.8rem, 1.8vw, 0.875rem);
  --entry-text-base: clamp(0.9rem, 2vw, 1rem);
  --entry-text-lg: clamp(1rem, 2.2vw, 1.125rem);
  --entry-text-xl: clamp(1.125rem, 2.5vw, 1.375rem);

  /* Fluid spacing */
  --entry-pad-sm: clamp(0.75rem, 2vw, 1rem);
  --entry-pad-md: clamp(1rem, 2.5vw, 1.25rem);
  --entry-pad-lg: clamp(1.25rem, 3vw, 1.5rem);

  /* Touch target */
  --entry-touch-min: 44px;
}

/* =============================================================================
   BASE ENTRY STYLES
   ============================================================================= */

.project-entry {
  /* Customizable properties with defaults */
  --entry-accent: var(--color-accent);
  --entry-bg: var(--color-surface);
  --entry-bg-hover: var(--color-surface-soft);
  --entry-stripe-width: 3px;

  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--entry-bg);
  border-radius: var(--radius-md);
  border-left: var(--entry-stripe-width) solid var(--entry-accent);
  transition: background var(--transition-fast);
}

.project-entry:hover {
  background: var(--entry-bg-hover);
}

/* Date */
.project-entry__date {
  font-size: var(--entry-text-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* Title */
.project-entry__title {
  font-size: var(--entry-text-base);
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
  line-height: var(--leading-snug);
}

/* Summary */
.project-entry__summary {
  font-size: var(--entry-text-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: var(--leading-relaxed);
}

/* External link indicator */
.project-entry__external {
  font-size: 0.75em;
  opacity: 0.5;
  margin-left: var(--space-1);
}

.project-entry:hover .project-entry__external {
  opacity: 0.8;
}

/* Media container */
.project-entry__media {
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.project-entry__media img,
.project-entry__media video {
  width: 100%;
  height: auto;
  display: block;
}

/* Video-specific styles */
.project-entry__video {
  background: var(--color-bg);
}

/* Fallback image (shown when media fails to load) */
.project-entry__media-fallback {
  width: 100%;
  height: auto;
  display: block;
}

/* Hide broken image icon while loading */
.project-entry__image:not(.loaded):not(.fallback) {
  background: var(--color-bg);
}

/* Icon (for small entries) */
.project-entry__icon {
  width: 16px;
  height: 16px;
  vertical-align: middle;
  margin-right: var(--space-2);
  border-radius: 3px;
  opacity: 0.8;
}

/* Tags */
.project-entry__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.project-entry__tags .tag {
  font-size: var(--entry-text-xs);
  padding: 2px 8px;
  background: var(--color-surface-soft);
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

/* CTA link */
.project-entry__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--entry-text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-3);
}

.project-entry__cta::after {
  content: "→";
  transition: transform var(--transition-fast);
}

.project-entry:hover .project-entry__cta::after {
  transform: translateX(4px);
}

/* Body container */
.project-entry__body {
  padding: var(--entry-pad-md) var(--entry-pad-lg) var(--entry-pad-lg);
}

/* =============================================================================
   LEVEL 1: LARGE - Image sandwich layout
   ============================================================================= */

.project-entry--large {
  --entry-stripe-width: 4px;
  overflow: hidden;
}

.project-entry--large .project-entry__header {
  padding: var(--entry-pad-md) var(--entry-pad-lg) var(--entry-pad-sm);
}

.project-entry--large .project-entry__date {
  margin-bottom: var(--space-1);
}

.project-entry--large .project-entry__title {
  font-size: var(--entry-text-xl);
}

.project-entry--large .project-entry__media {
  margin: 0;
  border-radius: 0;
}

.project-entry--large .project-entry__media img,
.project-entry--large .project-entry__media video {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.project-entry--large .project-entry__body {
  padding: var(--entry-pad-md) var(--entry-pad-lg) var(--entry-pad-sm);
}

.project-entry--large .project-entry__summary {
  font-size: var(--entry-text-base);
}

/* Large card tags at bottom edge */
.project-entry--large .project-entry__tags {
  padding: 0 var(--entry-pad-lg) var(--entry-pad-lg);
}

/* =============================================================================
   LEVEL 2: MEDIUM - Side-by-side grid
   ============================================================================= */

.project-entry--medium {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto auto;
  grid-template-areas:
    "header media"
    "body media"
    "tags tags";
  gap: 0 var(--entry-pad-md);
  padding: var(--entry-pad-md);
  overflow: hidden;
}

.project-entry--medium .project-entry__header {
  grid-area: header;
  padding: 0;
}

.project-entry--medium .project-entry__date {
  margin-bottom: var(--space-1);
}

.project-entry--medium .project-entry__title {
  font-size: var(--entry-text-lg);
}

.project-entry--medium .project-entry__media {
  grid-area: media;
  width: clamp(100px, 18vw, 140px);
  height: clamp(70px, 12vw, 95px);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg);
  align-self: center;
}

.project-entry--medium .project-entry__media img,
.project-entry--medium .project-entry__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-entry--medium .project-entry__body {
  grid-area: body;
  margin: var(--space-2) 0 0 0;
  padding: 0;
}

/* Medium card tags at bottom edge */
.project-entry--medium .project-entry__tags {
  grid-area: tags;
  margin-top: var(--space-2);
}

/* =============================================================================
   LEVEL 3: SMALL - Inline with icon
   ============================================================================= */

.project-entry--small {
  padding: var(--entry-pad-sm);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--entry-pad-sm);
  min-height: var(--entry-touch-min);
}

.project-entry--small .project-entry__date {
  flex-shrink: 0;
  width: clamp(55px, 12vw, 70px);
}

.project-entry--small .project-entry__icon {
  width: clamp(28px, 5vw, 32px);
  height: clamp(28px, 5vw, 32px);
  border-radius: var(--radius-sm);
  opacity: 1;
  flex-shrink: 0;
  margin-right: 0;
}

.project-entry--small .project-entry__content {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--entry-pad-sm);
}

.project-entry--small .project-entry__title {
  font-size: var(--entry-text-sm);
  font-weight: 500;
}

.project-entry--small .project-entry__body,
.project-entry--small .project-entry__media {
  display: none;
}

/* Small card tags at bottom - full width */
.project-entry--small .project-entry__tags {
  width: 100%;
  margin-top: var(--space-2);
}

.project-entry--small .project-entry__tags .tag {
  font-size: 0.65rem;
  padding: 1px 6px;
}

/* =============================================================================
   RESPONSIVE
   ============================================================================= */

/* Narrow screens */
@media (max-width: 480px) {
  /* Medium: collapse to sandwich layout */
  .project-entry--medium {
    display: block;
    padding: 0;
  }

  .project-entry--medium .project-entry__header {
    padding: var(--entry-pad-sm) var(--entry-pad-md);
  }

  .project-entry--medium .project-entry__media {
    width: 100%;
    height: auto;
    border-radius: 0;
  }

  .project-entry--medium .project-entry__media img {
    aspect-ratio: 3 / 1;
  }

  .project-entry--medium .project-entry__body {
    padding: var(--entry-pad-sm) var(--entry-pad-md);
    margin: 0;
  }

  .project-entry--medium .project-entry__tags {
    padding: 0 var(--entry-pad-md) var(--entry-pad-md);
    margin: 0;
  }

  /* Small: stack date above content */
  .project-entry--small {
    flex-wrap: wrap;
  }

  .project-entry--small .project-entry__date {
    width: 100%;
    margin-bottom: calc(-1 * var(--entry-pad-sm) + 4px);
  }

  .project-entry--small .project-entry__content {
    width: 100%;
  }

  .project-entry--small .project-entry__title {
    white-space: normal;
  }
}

/* Small items: allow titles to wrap on all screen sizes */
.project-entry--small .project-entry__title {
  white-space: normal;
}

/* =============================================================================
   REVEAL ANIMATION
   ============================================================================= */

.project-entry.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.project-entry.reveal.is-visible,
.project-entry.reveal.show {
  opacity: 1;
  transform: translateY(0);
}