@import url('https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400;6..72,500;6..72,600;6..72,700&family=Libre+Franklin:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --fe-wine: #7b2733;
  --fe-wine-deep: #5e1f2b;
  --fe-ink: #2b2521;
  --fe-shadow: 0 16px 40px rgba(43, 31, 20, 0.16);
  --fe-shadow-soft: 0 8px 22px rgba(43, 31, 20, 0.1);
  --fe-radius: 16px;
}

html[data-theme="dark"] {
  --fe-wine: #dd94a0;
  --fe-wine-deep: #e3a6b0;
  --fe-ink: #ece0cb;
  --fe-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  --fe-shadow-soft: 0 8px 22px rgba(0, 0, 0, 0.28);
}

body {
  --font-stack: 'Libre Franklin', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-stack--monospace: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-stack--headings: 'Newsreader', Georgia, 'Times New Roman', serif;
}

.content {
  background:
    radial-gradient(900px 380px at 12% -10%, rgba(123, 39, 51, 0.09), transparent 62%),
    radial-gradient(720px 320px at 92% 0%, rgba(196, 146, 64, 0.08), transparent 58%);
}

.fe-home .content {
  background:
    radial-gradient(1100px 520px at 18% -18%, rgba(123, 39, 51, 0.14), transparent 58%),
    radial-gradient(900px 420px at 88% -8%, rgba(196, 146, 64, 0.12), transparent 52%),
    var(--color-background-primary);
}

h1, h2, h3, h4, h5, h6, .sidebar-brand-text {
  font-family: var(--font-stack--headings);
  font-weight: 600;
  letter-spacing: -0.01em;
}
h1 { font-size: 2.8rem; line-height: 1.06; font-weight: 700; margin-bottom: 0.5rem; }
h2 {
  font-size: 1.75rem;
  margin-top: 2.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--color-background-border);
}
h3 { font-size: 1.3rem; }

article { line-height: 1.72; }

/* —— Site nav —— */
.fe-topnav {
  position: sticky;
  top: 0;
  z-index: 12;
  margin: 0 -0.4rem 1.35rem;
  padding: 0.55rem 0.4rem 0.7rem;
  background: var(--color-background-primary);
  border-bottom: 1px solid var(--color-background-border);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--color-background-primary) 80%, transparent);
}
.fe-topnav-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.1rem 0;
}
.fe-topnav-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 0.34rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--color-background-border);
  background: var(--color-background-secondary);
  color: var(--color-foreground-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none !important;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.fe-topnav-link:hover {
  color: var(--color-brand-primary);
  border-color: color-mix(in srgb, var(--color-brand-primary) 45%, var(--color-background-border));
  transform: translateY(-1px);
}
.fe-topnav-link.is-current {
  background: var(--fe-wine);
  border-color: var(--fe-wine);
  color: #f7efdc;
}
html[data-theme="dark"] .fe-topnav-link.is-current {
  color: #211b19;
}
html[data-theme="dark"] .fe-metric,
html[data-theme="dark"] .fe-jump-card,
html[data-theme="dark"] .fe-card,
html[data-theme="dark"] .fe-explorer {
  background: #322824;
  border-color: #4a3c36;
}
html[data-theme="dark"] .fe-metric-value,
html[data-theme="dark"] .fe-jump-kicker {
  color: #f0b4bc;
}
html[data-theme="dark"] .fe-jump-card strong {
  color: #f3e6d2;
}
html[data-theme="dark"] .fe-jump-card span:last-child,
html[data-theme="dark"] .fe-metric-label {
  color: #cbbba4;
}

@media (max-width: 67em) {
  .fe-topnav { top: var(--header-height, 3rem); }
}

/* —— Hero —— */
.fe-hero-img,
.fe-fig,
img.fe-fig,
.figure img {
  width: 100%;
  max-width: 960px;
  display: block;
  border-radius: var(--fe-radius);
  border: 1px solid var(--color-background-border);
  box-shadow: var(--fe-shadow);
  margin: 0.4rem auto 1.6rem;
}
.fe-hero-img {
  box-shadow: 0 18px 48px rgba(43, 31, 20, 0.28);
}

.fe-lede {
  font-size: 1.22rem;
  line-height: 1.6;
  color: var(--color-foreground-secondary);
  max-width: 46rem;
}
.fe-lede::first-letter {
  font-family: var(--font-stack--headings);
  font-weight: 700;
  font-size: 3.3rem;
  line-height: 0.78;
  float: left;
  padding: 0.12rem 0.6rem 0 0;
  color: var(--color-brand-primary);
}

.fe-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 0.2rem 0 1.35rem;
  padding: 0;
}
.fe-chips li {
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  background: color-mix(in srgb, var(--color-brand-primary) 10%, var(--color-background-secondary));
  border: 1px solid color-mix(in srgb, var(--color-brand-primary) 22%, var(--color-background-border));
  border-radius: 999px;
  padding: 0.32rem 0.72rem;
  animation: fe-chip-in 0.5s ease both;
}
.fe-chips li:nth-child(2) { animation-delay: 0.06s; }
.fe-chips li:nth-child(3) { animation-delay: 0.12s; }
.fe-chips li:nth-child(4) { animation-delay: 0.18s; }

.fe-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
  margin: 0.4rem 0 1.8rem;
}
.fe-metric {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-background-border);
  border-radius: 14px;
  padding: 0.95rem 1.05rem 1.05rem;
  box-shadow: var(--fe-shadow-soft);
  position: relative;
  overflow: hidden;
  animation: fe-chip-in 0.55s ease both;
}
.fe-metric:nth-child(2) { animation-delay: 0.07s; }
.fe-metric:nth-child(3) { animation-delay: 0.14s; }
.fe-metric::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--fe-wine);
}
.fe-metric-value {
  display: block;
  font-family: var(--font-stack--headings);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--color-brand-primary);
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.fe-metric-label {
  display: block;
  margin-top: 0.28rem;
  font-size: 0.82rem;
  color: var(--color-foreground-muted);
}

/* —— Jump cards —— */
.fe-jump {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.85rem;
  margin: 0.2rem 0 2rem;
}
.fe-jump-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-height: 8.4rem;
  padding: 1rem 1.05rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--color-background-border);
  background: var(--color-background-secondary);
  box-shadow: var(--fe-shadow-soft);
  text-decoration: none !important;
  color: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  animation: fe-chip-in 0.55s ease both;
}
.fe-jump-card:nth-child(1) { animation-delay: 0.04s; }
.fe-jump-card:nth-child(2) { animation-delay: 0.08s; }
.fe-jump-card:nth-child(3) { animation-delay: 0.12s; }
.fe-jump-card:nth-child(4) { animation-delay: 0.16s; }
.fe-jump-card:nth-child(5) { animation-delay: 0.2s; }
.fe-jump-card:nth-child(6) { animation-delay: 0.24s; }
.fe-jump-card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--color-brand-primary) 40%, var(--color-background-border));
  box-shadow: 0 16px 32px rgba(123, 39, 51, 0.14);
}
.fe-jump-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
}
.fe-jump-card strong {
  font-family: var(--font-stack--headings);
  font-size: 1.18rem;
  font-weight: 650;
  color: var(--color-foreground-primary);
}
.fe-jump-card span:last-child {
  font-size: 0.9rem;
  color: var(--color-foreground-muted);
  line-height: 1.45;
}

/* —— News timeline —— */
.fe-news {
  list-style: none;
  margin: 0.6rem 0 1.4rem;
  padding: 0;
}
.fe-news-item {
  position: relative;
  padding: 0.85rem 0 0.95rem 1.25rem;
  border-left: 2px solid color-mix(in srgb, var(--color-brand-primary) 35%, var(--color-background-border));
}
.fe-news-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 1.15rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fe-wine);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-brand-primary) 16%, transparent);
}
.fe-news-date {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  margin-bottom: 0.2rem;
}
.fe-news-item p { margin: 0.15rem 0 0; }

.fe-inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin: 0.3rem 0 1.6rem;
  font-size: 0.95rem;
}

/* —— Existing card grids —— */
.fe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
  gap: 0.9rem;
  margin: 1.5rem 0;
}
.fe-card {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-background-border);
  border-radius: 12px;
  padding: 0.9rem 1.1rem;
  box-shadow: var(--fe-shadow-soft);
}
.fe-card h4 {
  font-family: var(--font-stack--headings);
  color: var(--color-brand-primary);
  margin: 0 0 0.5rem;
  font-size: 1.06rem;
}
.fe-card ul { list-style: none; margin: 0; padding: 0; }
.fe-card li {
  font-size: 0.92rem;
  padding: 0.16rem 0 0.16rem 1.35rem;
  position: relative;
  color: var(--color-foreground-muted);
}
.fe-card li.done { color: var(--color-foreground-primary); }
.fe-card li::before { content: "\25CB"; position: absolute; left: 0; color: var(--color-foreground-muted); }
.fe-card li.done::before { content: "\2713"; color: var(--color-brand-primary); font-weight: 700; }

.fe-explorer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.9rem;
  margin: 1.4rem 0;
}
.fe-explorer {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-background-border);
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
  box-shadow: var(--fe-shadow-soft);
}
.fe-explorer summary {
  cursor: pointer;
  color: var(--color-brand-primary);
  font-family: var(--font-stack--headings);
  font-size: 1.08rem;
  font-weight: 600;
  padding: 0.85rem 1rem;
}
.fe-explorer summary:hover { background: var(--color-background-hover); }
.fe-explorer[open] summary { border-bottom: 1px solid var(--color-background-border); }
.fe-explorer p { margin: 0; padding: 0.55rem 1rem; font-size: 0.92rem; }
.fe-explorer p + p { padding-top: 0; }
.fe-explorer code { font-size: 0.88em; }

/* —— Sidebar —— */
.sidebar-logo-container { margin: 0.7rem 0 0.4rem; }
.sidebar-logo {
  max-width: 100%;
  border-radius: 10px;
  border: 1px solid var(--color-background-border);
  box-shadow: 0 8px 26px rgba(43, 31, 20, 0.22);
  transition: transform 0.35s ease;
}
.sidebar-brand:hover .sidebar-logo { transform: translateY(-2px) rotate(-1.5deg); }
.sidebar-brand-text { font-size: 1.4rem; letter-spacing: 0; }

.sidebar-tree { line-height: 1.5; }
.sidebar-tree .reference { font-size: 0.92rem; }
.sidebar-tree .caption,
.sidebar-tree .caption-text,
.sidebar-tree p.caption {
  font-family: var(--font-stack) !important;
  font-size: 0.68rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-brand-primary) !important;
  margin-top: 1.15rem;
}
.sidebar-tree li.current-page > .reference,
.sidebar-tree .current-page > a {
  font-weight: 650;
}

.highlight { border-radius: 10px; border: 1px solid var(--color-background-border); }
code.literal { border-radius: 5px; padding: 0.1em 0.4em; border: 1px solid var(--color-background-border); }

a.reference { text-decoration: none; border-bottom: 1px solid transparent; }
a.reference:hover { border-bottom-color: currentColor; }

blockquote {
  border-left: 3px solid var(--color-brand-primary);
  font-style: italic;
  color: var(--color-foreground-secondary);
}

article table {
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: var(--fe-shadow-soft);
}
article table th {
  background: color-mix(in srgb, var(--color-brand-primary) 10%, var(--color-background-secondary));
}

.related-pages {
  margin-top: 2.4rem;
}

/* —— Motion —— */
.fe-reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fe-reveal.is-in {
  opacity: 1;
  transform: none;
}

@keyframes fe-hero-in {
  from { opacity: 0; transform: translateY(10px) scale(0.985); }
  to { opacity: 1; transform: none; }
}
@keyframes fe-chip-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
@keyframes fe-nav-in {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .fe-hero-img,
  .fe-chips li,
  .fe-topnav,
  .fe-reveal,
  .fe-jump-card,
  .sidebar-logo {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}