/* Nines Docs — sidebar layout, prose typography, responsive collapse */

/* ─── Docs shell ─── */
.docs-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: calc(100vh - 4rem);
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  gap: 3rem;
  align-items: start;
}

/* ─── Sidebar ─── */
.docs-nav {
  position: sticky;
  top: 2rem;
  padding: 1.5rem 0;
}

/* Reset global nav rule (flex + padding) inside the docs sidebar. */
.docs-nav nav {
  display: block;
  max-width: none;
  margin: 0;
  padding: 0;
  gap: 0;
  height: auto;
  align-items: initial;
  justify-content: initial;
}

.docs-nav-section {
  margin-bottom: 1.5rem;
}

.docs-nav-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 0.75rem 0.5rem;
  display: block;
}

.docs-nav-link {
  display: block;
  padding: 0.3rem 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: var(--radius-xs);
  transition: color 0.15s, background 0.15s;
  line-height: 1.5;
}

.docs-nav-link:hover {
  color: var(--text);
  background: var(--surface-2);
}

.docs-nav-link.active {
  color: var(--accent);
  background: var(--accent-dim);
}

/* ─── Content area ─── */
.docs-content {
  min-width: 0;
  padding: 1.5rem 0;
}

/* Reset global header rule (border-bottom) inside the docs content area. */
.docs-content header {
  border-bottom: none;
}

/* ─── Prose typography ─── */
.docs-content h1 {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 1rem;
}

.docs-content .docs-lead {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 60ch;
}

.docs-content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
}

.docs-content h2:first-of-type {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.docs-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}

.docs-content h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 1.25rem;
  margin-bottom: 0.4rem;
}

.docs-content p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1rem;
  max-width: 70ch;
}

.docs-content ul,
.docs-content ol {
  color: var(--text-secondary);
  line-height: 1.75;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  max-width: 70ch;
}

.docs-content li {
  margin-bottom: 0.25rem;
}

.docs-content a {
  color: var(--accent);
  text-decoration: none;
}

.docs-content a:hover {
  text-decoration: underline;
}

.docs-content code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.1em 0.4em;
  color: var(--accent);
}

.docs-content pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
}

.docs-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.docs-content strong {
  color: var(--text);
  font-weight: 600;
}

/* ─── Landing page cards ─── */
.docs-sections {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.docs-section-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.docs-section-card h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-top: 0;
  padding-top: 0;
  border-top: none;
  margin-bottom: 0.5rem;
}

.docs-section-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  max-width: none;
}

.docs-section-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-section-card ul li {
  margin-bottom: 0.25rem;
}

.docs-section-card ul li a {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  text-decoration: none;
}

.docs-section-card ul li a:hover {
  color: var(--accent);
}

/* ─── Table ─── */
.docs-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0 1.5rem;
  font-size: 0.875rem;
}

.docs-content th {
  text-align: left;
  padding: 0.625rem 0.875rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
}

.docs-content td {
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* ─── Mobile sidebar toggle ─── */
.docs-sidebar-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.625rem 1rem;
  color: var(--text);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  cursor: pointer;
  width: 100%;
  text-align: left;
  margin-bottom: 1rem;
}

.docs-sidebar-toggle-icon {
  font-size: 1rem;
  line-height: 1;
}

.docs-nav-mobile-wrapper {
  display: contents;
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .docs-shell {
    grid-template-columns: 1fr;
    padding: 1rem;
    gap: 0;
  }

  .docs-sidebar-toggle {
    display: flex;
  }

  .docs-nav {
    position: static;
    margin-bottom: 1.5rem;
  }

  .docs-nav-mobile-wrapper {
    display: none;
  }

  .docs-nav-mobile-wrapper.open {
    display: block;
  }

  .docs-sections {
    grid-template-columns: 1fr;
  }
}