/* ============================================
   LENA Release Notes - Custom Styles
   Timeline-based version history layout
   ============================================ */

/* ============================================
   Timeline Container
   ============================================ */
.release-notes-timeline {
  position: relative;
  padding-left: var(--space-8);
}

.release-notes-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--space-3);
  bottom: var(--space-3);
  width: 2px;
  background-color: color-mix(in srgb, var(--color-primary) 20%, transparent);
}

/* ============================================
   Version Card
   ============================================ */
.release-notes-card {
  position: relative;
  background-color: var(--bg-content);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--border-radius);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.release-notes-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.release-notes-card:last-child {
  margin-bottom: 0;
}

/* Timeline dot for each card */
.release-notes-card::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: calc(var(--space-6) + 0.6em);
  width: 10px;
  height: 10px;
  background-color: var(--color-primary);
  border: 2px solid var(--bg-content);
  border-radius: 50%;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--color-primary) 30%, transparent);
}

/* ============================================
   Card Header: Badge + Date
   ============================================ */
.release-notes-card__header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border-color);
}

/* ============================================
   Version Badge
   ============================================ */
.release-notes-version-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25em 0.75em;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: 9999px;
  line-height: 1.5;
  white-space: nowrap;
  text-decoration: none;
}

.release-notes-version-badge:hover {
  background-color: var(--color-primary-hover);
  color: #FFFFFF;
  text-decoration: none;
}

/* ============================================
   Date Display
   ============================================ */
.release-notes-date {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-family: var(--font-sans);
  white-space: nowrap;
}

/* ============================================
   Card Component List (summary tags like "Web Server, WAS")
   ============================================ */
.release-notes-card__components {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.release-notes-card__component-tag {
  display: inline-block;
  padding: 0.15em 0.6em;
  background-color: var(--bg-code);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
}

/* ============================================
   Card Body Content (Asciidoctor .doc-include)
   ============================================ */
.release-notes-card__body {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--text-primary);
}

/* Component section headings inside cards */
.release-notes-card__body h3,
.release-notes-card__body .doc-include h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin: var(--space-5) 0 var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-color);
}

.release-notes-card__body h3:first-child,
.release-notes-card__body .doc-include h3:first-child {
  margin-top: 0;
}

.release-notes-card__body h4,
.release-notes-card__body .doc-include h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin: var(--space-4) 0 var(--space-2);
}

/* Lists inside cards */
.release-notes-card__body ul,
.release-notes-card__body .doc-include ul,
.release-notes-card__body ol,
.release-notes-card__body .doc-include ol {
  padding-left: var(--space-5);
  margin: 0 0 var(--space-3);
}

.release-notes-card__body li,
.release-notes-card__body .doc-include li {
  margin-bottom: var(--space-1);
  color: var(--text-primary);
}

.release-notes-card__body p,
.release-notes-card__body .doc-include p {
  margin: 0 0 var(--space-3);
}

/* Code inside cards */
.release-notes-card__body code,
.release-notes-card__body .doc-include code {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  background-color: var(--bg-code);
  padding: 0.1em 0.35em;
  border-radius: var(--border-radius-sm);
}

/* ============================================
   Overview Page Layout (.release-notes-overview)
   ============================================ */
.release-notes-overview {
  max-width: 860px;
}

.release-notes-overview__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.02em;
}

.release-notes-overview__description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0 0 var(--space-10);
}

/* Overview cards are slightly more compact */
.release-notes-overview .release-notes-card {
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.release-notes-overview .release-notes-card__body {
  margin-top: var(--space-3);
}

/* "View details" link in overview cards */
.release-notes-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.release-notes-card__link:hover {
  color: var(--color-primary-hover);
  text-decoration: none;
}

.release-notes-card__link svg {
  transition: transform var(--transition-fast);
}

.release-notes-card__link:hover svg {
  transform: translateX(2px);
}

/* ============================================
   Detail Page Layout (.release-notes-detail)
   ============================================ */
.release-notes-detail {
  max-width: 860px;
}

.release-notes-detail__header {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.release-notes-detail__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.release-notes-detail__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.02em;
}

.release-notes-detail__description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

/* Navigation between versions */
.release-notes-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-color);
}

.release-notes-nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  text-decoration: none;
  color: var(--text-primary);
  max-width: 48%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.release-notes-nav__link:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.release-notes-nav__link--next {
  text-align: right;
  margin-left: auto;
}

.release-notes-nav__label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.release-notes-nav__version {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
}

/* ============================================
   Sidebar Date Display
   (small date shown below version link in sidebar)
   ============================================ */
.sidebar__release-date {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
  padding-left: calc(var(--space-4) + 1.25rem);
  padding-bottom: var(--space-1);
  margin-top: calc(-1 * var(--space-1));
  line-height: 1.2;
}

/* ============================================
   Dark Mode Overrides
   ============================================ */
:root[data-theme="dark"] .release-notes-timeline::before {
  background-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
}

:root[data-theme="dark"] .release-notes-card {
  background-color: var(--bg-content);
  border-color: var(--border-color);
  border-left-color: var(--color-primary);
}

:root[data-theme="dark"] .release-notes-card::before {
  border-color: var(--bg-content);
}

:root[data-theme="dark"] .release-notes-card__component-tag {
  background-color: var(--bg-code);
  border-color: var(--border-color);
  color: var(--text-secondary);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .release-notes-timeline::before {
    background-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
  }

  :root:not([data-theme]) .release-notes-card {
    background-color: var(--bg-content);
    border-color: var(--border-color);
    border-left-color: var(--color-primary);
  }

  :root:not([data-theme]) .release-notes-card::before {
    border-color: var(--bg-content);
  }

  :root:not([data-theme]) .release-notes-card__component-tag {
    background-color: var(--bg-code);
    border-color: var(--border-color);
    color: var(--text-secondary);
  }
}

/* ============================================
   Responsive: Mobile
   ============================================ */
@media (max-width: 768px) {
  /* Hide timeline line on mobile */
  .release-notes-timeline {
    padding-left: 0;
  }

  .release-notes-timeline::before {
    display: none;
  }

  /* Remove timeline dot on mobile */
  .release-notes-card::before {
    display: none;
  }

  /* Full-width cards, reduced padding */
  .release-notes-card {
    padding: var(--space-4);
    margin-bottom: var(--space-5);
  }

  .release-notes-overview .release-notes-card {
    padding: var(--space-4);
    margin-bottom: var(--space-4);
  }

  /* Stack badge and date vertically */
  .release-notes-card__header {
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-3);
  }

  .release-notes-version-badge {
    font-size: var(--font-size-xs);
  }

  /* Detail page responsive */
  .release-notes-detail__title {
    font-size: var(--font-size-2xl);
  }

  .release-notes-overview__title {
    font-size: var(--font-size-2xl);
  }

  .release-notes-nav {
    flex-direction: column;
  }

  .release-notes-nav__link {
    max-width: 100%;
  }

  .release-notes-nav__link--next {
    text-align: left;
    margin-left: 0;
  }
}