/* ── Modern clean style ── */

/* Top accent */
body {
  border-top: 3px solid #111827;
}

/* Title */
.quarto-title h1.title {
  font-weight: 700;
  letter-spacing: -0.03em;
  color: #111827;
  font-size: 2.1rem;
}

.quarto-title .subtitle {
  font-style: normal;
  color: #6b7280;
  font-size: 1.02rem;
  font-weight: 400;
  line-height: 1.6;
  max-width: 640px;
}

/* ── Hero section (index page) ── */

.hero {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 2rem 2.2rem;
  margin: 1rem 0 2.5rem 0;
}

.hero-content {
  font-size: 1rem;
  line-height: 1.7;
  color: #4b5563;
  max-width: 720px;
}

.hero-content a {
  font-weight: 500;
}

.hero-badges {
  margin-top: 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.badge {
  display: inline-block;
  background: #111827;
  color: #f9fafb;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2em 0.65em;
  border-radius: 5px;
  letter-spacing: 0.01em;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── Documentation cards ── */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin: 1.2rem 0 2rem 0;
}

.doc-card {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 1.3rem 1.4rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.doc-card:hover {
  border-color: #9ca3af;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.doc-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 0.4rem;
  border: none;
  padding: 0;
}

.doc-card p {
  font-size: 0.9rem;
  color: #6b7280;
  line-height: 1.55;
  margin: 0;
}

/* ── Sidebar ── */

.sidebar-title {
  font-weight: 600;
  font-size: 0.92rem;
  color: #111827;
}

.sidebar-item .sidebar-item-text {
  font-size: 0.88rem;
}

.sidebar .sidebar-section .sidebar-item.active .sidebar-item-text {
  font-weight: 600;
  color: #111827;
}

/* ── Headings ── */

h1, h2, h3, h4 {
  color: #111827;
  font-weight: 600;
  letter-spacing: -0.01em;
}

h2 {
  border-bottom: 1px solid #e5e7eb;
  padding-bottom: 0.4rem;
  margin-top: 2.5rem;
}

h3 {
  margin-top: 2rem;
}

/* ── Links ── */

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* ── Code blocks ── */

pre.sourceCode {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 1rem 1.2rem;
  font-size: 0.85rem;
  line-height: 1.6;
}

code {
  color: #dc2626;
  background: #f3f4f6;
  padding: 0.12em 0.35em;
  border-radius: 4px;
  font-size: 0.87em;
}

pre code {
  color: inherit;
  background: none;
  padding: 0;
}

/* ── Tables ── */

table {
  font-size: 0.9rem;
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
}

thead {
  border-bottom: 2px solid #111827;
}

th {
  font-weight: 600;
  color: #111827;
  padding: 0.55rem 0.8rem;
  text-align: left;
}

td {
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid #e5e7eb;
}

tbody tr:hover {
  background: #f9fafb;
}

/* ── Callouts ── */

.callout {
  border-radius: 8px;
  margin: 1.5rem 0;
}

/* ── Mermaid diagrams ── */

.mermaid svg {
  max-width: 100%;
}

/* ── Block quotes ── */

blockquote {
  border-left: 3px solid #111827;
  padding-left: 1.2rem;
  color: #6b7280;
  font-style: italic;
  margin: 1.5rem 0;
}

/* ── Page footer ── */

.nav-footer {
  font-size: 0.84rem;
  color: #9ca3af;
  border-top: 1px solid #e5e7eb;
}

/* ── TOC ── */

.sidebar nav[role="doc-toc"] a {
  font-size: 0.86rem;
  color: #6b7280;
}

.sidebar nav[role="doc-toc"] a.active {
  color: #111827;
  font-weight: 600;
}

/* ── Math display ── */

.math.display {
  margin: 1.5rem 0;
  padding: 0.8rem 1rem;
  background: #f9fafb;
  border-radius: 6px;
}