/* ====================================================
   releases.css — Release Notes page
   Extends the base index.css design tokens/system
   ==================================================== */

/* Ensure the HTML `hidden` attribute always wins,
   even when CSS sets display:flex on these elements */
[hidden] { display: none !important; }

/* ── Hero ─────────────────────────────────────────── */
.releases-hero {
  background: linear-gradient(
    180deg,
    rgba(59, 130, 246, 0.06) 0%,
    transparent 100%
  );
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  padding: 5rem var(--space-md) 3.5rem;
}

.releases-hero-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  animation: fadeSlideUp 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.releases-hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.25rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.releases-hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.65;
}

/* Meta bar */
.releases-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 0.25rem;
}

.releases-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.releases-meta-sep {
  color: var(--text-muted);
  font-size: 0.75rem;
  opacity: 0.5;
}

.releases-meta-link {
  color: var(--brand-blue);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

.releases-meta-link:hover {
  color: var(--brand-cyan);
}

/* ── Controls / Filter Bar ────────────────────────── */
.releases-controls-wrap {
  position: sticky;
  top: 72px;
  z-index: 40;
  background: rgba(10, 14, 26, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  padding: 0.85rem var(--space-md);
}

.releases-controls {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.search-wrap {
  position: relative;
  flex: 1;
  min-width: 200px;
}

.search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 0.6rem 0.9rem 0.6rem 2.4rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  border-color: rgba(59, 130, 246, 0.5);
  background: rgba(59, 130, 246, 0.05);
}

.filter-btn {
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
}

.filter-btn.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.4);
  color: var(--brand-blue);
}

/* ── Main Section / Layout ────────────────────────── */
.releases-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem var(--space-md) 5rem;
}

.releases-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2.5rem;
  align-items: start;
}

/* ── Timeline Feed ────────────────────────────────── */
.releases-feed {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* ── Release Card ─────────────────────────────────── */
.release-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
  animation: cardIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.release-card:hover {
  border-color: rgba(59, 130, 246, 0.28);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}

.release-card.is-latest {
  border-color: rgba(59, 130, 246, 0.35);
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.12),
              0 8px 40px rgba(59, 130, 246, 0.08);
}

/* Card Header */
.release-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  gap: 1rem;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.release-card-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.release-card.open .release-card-header {
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

.release-card-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.release-tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.release-tag-pill.tag-major {
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.35);
  color: #a78bfa;
}

.release-tag-pill.tag-minor {
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}

.release-tag-pill.tag-patch {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: #34d399;
}

.release-card.is-latest .release-tag-pill::before {
  content: '★ Latest · ';
}

.release-version {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.release-title {
  font-size: 0.9rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.release-card-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.release-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.release-toggle {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-base);
}

.release-card.open .release-toggle {
  transform: rotate(180deg);
  color: var(--brand-blue);
}

/* Card Body */
.release-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.38s cubic-bezier(0.22, 1, 0.36, 1);
}

.release-card.open .release-card-body {
  max-height: 1200px;
}

.release-card-content {
  padding: 1.5rem 1.5rem 1.75rem;
  max-height: 520px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(59, 130, 246, 0.4) transparent;
}

.release-card-content::-webkit-scrollbar {
  width: 5px;
}

.release-card-content::-webkit-scrollbar-track {
  background: transparent;
}

.release-card-content::-webkit-scrollbar-thumb {
  background: rgba(59, 130, 246, 0.4);
  border-radius: 999px;
}

.release-card-content::-webkit-scrollbar-thumb:hover {
  background: rgba(59, 130, 246, 0.7);
}

/* Notes markdown-like rendering */
.release-notes {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.75;
}

.release-notes p {
  margin-bottom: 0.75rem;
}

.release-notes h2,
.release-notes h3 {
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 700;
  margin: 1.25rem 0 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.release-notes h2::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 1em;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.release-notes ul {
  list-style: none;
  padding: 0;
  margin: 0.25rem 0 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.release-notes ul li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.1rem 0;
}

.release-notes ul li::before {
  content: '→';
  color: var(--brand-blue);
  font-weight: 600;
  flex-shrink: 0;
  margin-top: 0.05em;
}

.release-notes code {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 4px;
  padding: 0.1em 0.45em;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.82em;
  color: var(--brand-cyan);
}

.release-notes strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* No release notes fallback */
.no-notes {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  padding: 0.25rem 0;
}

/* Card Footer Links */
.release-card-footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  flex-wrap: wrap;
}

.release-gh-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.release-gh-link:hover {
  color: var(--brand-cyan);
  text-decoration: underline;
}

.release-commit {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: 'SFMono-Regular', Consolas, monospace;
  margin-left: auto;
}

/* ── Sidebar ──────────────────────────────────────── */
.releases-sidebar {
  position: sticky;
  top: calc(72px + 56px + 1.5rem); /* header + control bar + gap */
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.sidebar-card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.sidebar-card-value {
  font-size: 1.7rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}

.sidebar-card-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.sidebar-link:hover {
  color: var(--brand-blue);
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.06);
}

/* ── Skeleton Loaders ─────────────────────────────── */
.skeleton-group {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.skeleton-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.sk {
  border-radius: 6px;
  background: linear-gradient(
    90deg,
    rgba(255,255,255,0.05) 25%,
    rgba(255,255,255,0.1) 50%,
    rgba(255,255,255,0.05) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.sk-tag  { height: 22px; width: 80px; border-radius: 999px; }
.sk-title{ height: 20px; width: 55%; margin-top: 0.25rem; }
.sk-line { height: 14px; width: 90%; }
.sk-line.short { width: 60%; }

/* ── Empty / Error States ─────────────────────────── */
.releases-empty,
.releases-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 4rem var(--space-md);
  color: var(--text-muted);
  text-align: center;
}

.releases-empty svg,
.releases-error svg {
  opacity: 0.4;
}

.releases-error svg {
  color: #f97316;
}

.releases-empty p,
.releases-error p {
  font-size: 1rem;
  color: var(--text-secondary);
}

/* ── Responsive ───────────────────────────────────── */
@media (max-width: 860px) {
  .releases-layout {
    grid-template-columns: 1fr;
  }

  .releases-sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar-card {
    flex: 1;
    min-width: 140px;
  }

  .sidebar-links {
    flex-direction: row;
    flex-wrap: wrap;
    width: 100%;
  }

  .sidebar-link {
    flex: 1;
    justify-content: center;
    min-width: 160px;
  }
}

@media (max-width: 600px) {
  .releases-hero {
    padding: 3.5rem var(--space-md) 2.5rem;
  }

  .releases-hero h1 {
    font-size: 2.25rem;
  }

  .releases-controls-wrap {
    padding: 0.7rem var(--space-md);
  }

  .releases-controls {
    gap: 0.4rem;
  }

  .filter-btn {
    padding: 0.45rem 0.75rem;
    font-size: 0.75rem;
  }

  .release-card-header {
    padding: 1rem 1.1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .release-card-right {
    width: 100%;
    justify-content: space-between;
  }

  .release-card-content {
    padding: 1rem 1.1rem 1.25rem;
  }

  .release-commit {
    display: none;
  }
}