.docs-layout {
  --docs-sidebar: 288px;
  min-height: 100vh;
}

.docs-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
}

.docs-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(100% - 32px, 1120px);
  margin: 0 auto;
  padding: 16px 0;
}

.docs-back {
  color: var(--muted);
  font-size: 0.95rem;
}

.docs-back:hover {
  color: var(--text);
}

.docs-header-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.docs-menu-btn {
  display: none;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

.docs-shell {
  display: grid;
  grid-template-columns: var(--docs-sidebar) 1fr;
  gap: 32px;
  width: min(100% - 32px, 1120px);
  margin: 0 auto;
  padding: 32px 0 64px;
}

.docs-sidebar {
  position: sticky;
  top: 72px;
  align-self: start;
  max-height: calc(100vh - 88px);
  overflow-y: auto;
}

.docs-sidebar nav {
  display: grid;
  gap: 4px;
}

.docs-sidebar a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.docs-sidebar a:hover {
  color: var(--text);
  background: var(--card);
  text-decoration: none;
}

.docs-sidebar a.is-active {
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
  font-weight: 500;
}

.docs-main {
  min-width: 0;
  max-width: 48rem;
}

.docs-section-intro {
  margin-bottom: 32px;
}

.docs-section-intro h1 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.docs-section-intro p {
  margin: 0;
  color: var(--muted);
}

.docs-guide-list {
  display: grid;
  gap: 12px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.docs-guide-list a {
  display: block;
  padding: 18px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
}

.docs-guide-list a:hover {
  border-color: var(--link);
  text-decoration: none;
}

.docs-guide-list strong {
  display: block;
  margin-bottom: 4px;
}

.docs-guide-list span {
  color: var(--muted);
  font-size: 0.95rem;
}

.docs-overlay {
  display: none;
}

@media (max-width: 900px) {
  .docs-menu-btn {
    display: inline-block;
  }

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

  .docs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 30;
    width: min(288px, 85vw);
    height: 100vh;
    max-height: none;
    padding: 72px 16px 24px;
    background: var(--bg);
    border-right: 1px solid var(--border);
    transform: translateX(-100%);
    transition: transform 0.2s ease;
  }

  .docs-sidebar.is-open {
    transform: translateX(0);
  }

  .docs-overlay.is-visible {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 25;
    background: rgba(0, 0, 0, 0.4);
  }
}