/* d2ha — Documentation pages
   On top of style.css: sidebar, "On this page", callouts, tables, previous/next.
*/

.docs-shell {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) 190px;
  gap: 48px;
  padding-top: 104px;
  align-items: start;
}

/* --- Sidebar --- */
.docs-sidebar {
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  padding-bottom: 24px;
  scrollbar-width: thin;
}

.docs-sidebar .group + .group { margin-top: 22px; }

.docs-sidebar .group-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--brand-soft);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 6px 12px;
}

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

.docs-sidebar a {
  display: block;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
}

.docs-sidebar a:hover { color: var(--text); background: rgba(255, 255, 255, 0.04); }

.docs-sidebar a[aria-current="page"] {
  color: var(--text);
  background: rgba(0, 181, 133, 0.12);
  box-shadow: inset 2px 0 0 var(--brand);
}

.menu-toggle { display: none; }

.nav-links a[aria-current="page"] { color: var(--text); }

/* --- Content --- */
.docs-content { min-width: 0; max-width: 760px; padding-bottom: 24px; }

.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dim);
  margin-bottom: 14px;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--text); }

.docs-content h1 { font-size: clamp(2rem, 4.2vw, 2.8rem); margin-bottom: 16px; }

.docs-content .lead { max-width: none; margin-bottom: 32px; }

.docs-content h2 {
  font-size: 1.55rem;
  margin: 52px 0 14px;
  padding-top: 4px;
  scroll-margin-top: 88px;
}

.docs-content h3 {
  font-size: 1.1rem;
  margin: 30px 0 10px;
  scroll-margin-top: 88px;
}

.docs-content h2 + h3 { margin-top: 18px; }

.docs-content p,
.docs-content li { font-size: 0.97rem; }

.docs-content li { color: var(--muted); margin-bottom: 6px; }

.docs-content ul,
.docs-content ol { margin: 0 0 18px; padding-left: 22px; }

.docs-content li > ul,
.docs-content li > ol { margin: 6px 0 0; }

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

.docs-content p a,
.docs-content li a,
.docs-content td a,
.callout a {
  color: var(--brand-soft);
  border-bottom: 1px solid rgba(52, 211, 153, 0.35);
  transition: border-color 0.2s;
}

.docs-content p a:hover,
.docs-content li a:hover,
.docs-content td a:hover,
.callout a:hover { border-color: var(--brand-soft); }

.docs-content pre { margin: 0 0 20px; }

.code-wrap { position: relative; }

.code-wrap .copy {
  position: absolute;
  top: 8px;
  right: 8px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
  background: rgba(7, 11, 10, 0.85);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 3px 9px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s, border-color 0.2s;
}

.code-wrap:hover .copy,
.code-wrap .copy:focus-visible { opacity: 1; }

.code-wrap .copy:hover { color: var(--text); border-color: var(--border-hover); }

@media (hover: none) {
  .code-wrap .copy { opacity: 1; }
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.8em;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
}

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  margin: 0 0 22px;
  border: 1px solid var(--border);
  border-radius: 12px;
}

.docs-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.docs-content th,
.docs-content td {
  text-align: left;
  vertical-align: top;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.docs-content th {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  white-space: nowrap;
}

.docs-content td { color: var(--muted); }

.docs-content tr:last-child td { border-bottom: none; }

.docs-content td:first-child { color: var(--text); }

/* --- Callouts --- */
.callout {
  margin: 0 0 22px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid rgba(0, 181, 133, 0.25);
  background: rgba(0, 181, 133, 0.06);
  font-size: 0.93rem;
  color: var(--muted);
}

.callout p { font-size: inherit; margin: 0; }
.callout p + p { margin-top: 8px; }

.callout-title {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-soft);
  margin-bottom: 4px;
}

.callout.warning { border-color: rgba(254, 188, 46, 0.3); background: rgba(254, 188, 46, 0.06); }
.callout.warning .callout-title { color: #febc2e; }

/* --- Screenshots --- */
.docs-shot { margin: 8px 0 28px; }
.docs-shot .window { box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.6); }
.docs-shot figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--dim);
  text-align: center;
  margin-top: 10px;
}
.docs-shot.phone img { display: block; max-width: 280px; margin: 0 auto; border-radius: 18px; }

/* --- Steps --- */
.steps { counter-reset: step; list-style: none; padding-left: 0 !important; }

.steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 40px;
  margin-bottom: 14px;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--brand-soft);
  background: rgba(0, 181, 133, 0.1);
  border: 1px solid rgba(0, 181, 133, 0.3);
}

.steps > li pre { margin: 10px 0 0; }

/* --- Cards of links (introduction) --- */
.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 22px;
}

.link-card {
  display: block;
  padding: 18px 20px;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.link-card:hover { border-color: var(--border-hover); background: var(--panel-hover); transform: translateY(-2px); }
.link-card strong { display: block; font-family: var(--font-display); margin-bottom: 4px; }
.link-card span { font-size: 0.88rem; color: var(--muted); }

/* --- Previous / next --- */
.pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.pager a {
  display: block;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  transition: border-color 0.2s, background 0.2s;
}

.pager a:hover { border-color: var(--border-hover); background: var(--panel-hover); }
.pager .next { text-align: right; grid-column: 2; }
.pager small {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.pager strong { font-family: var(--font-display); color: var(--text); }

.page-help {
  margin-top: 22px;
  font-size: 0.85rem;
  color: var(--dim);
}

.page-help a { color: var(--muted); border-bottom: 1px solid var(--border); }
.page-help a:hover { color: var(--text); }

/* --- On this page --- */
.docs-toc {
  position: sticky;
  top: 88px;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
  font-size: 0.82rem;
}

.docs-toc:empty { display: none; }

.docs-toc .toc-title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.docs-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }

.docs-toc a {
  display: block;
  padding: 4px 0 4px 12px;
  margin-left: -1px;
  border-left: 1px solid transparent;
  color: var(--dim);
  line-height: 1.4;
  transition: color 0.2s, border-color 0.2s;
}

.docs-toc a:hover { color: var(--text); }
.docs-toc a.active { color: var(--brand-soft); border-left-color: var(--brand-soft); }

.docs-shell + .footer { margin-top: 24px; }

/* --- Responsive --- */
@media (max-width: 1180px) {
  .docs-shell { grid-template-columns: 220px minmax(0, 1fr); gap: 40px; }
  .docs-toc { display: none; }
}

@media (max-width: 860px) {
  .docs-shell { grid-template-columns: minmax(0, 1fr); padding-top: 92px; }

  .menu-toggle { display: inline-flex; }

  /* Without JavaScript the menu is a list after the page; "Menu" jumps to it. */
  .docs-sidebar {
    position: static;
    max-height: none;
    order: 2;
    border-top: 1px solid var(--border);
    padding-top: 28px;
  }

  .docs-content { order: 1; }

  /* With JavaScript it is a drawer under the header. */
  .js .docs-sidebar {
    position: fixed;
    top: 64px;
    left: 0;
    bottom: 0;
    z-index: 90;
    width: min(300px, 84vw);
    padding: 20px 14px 32px;
    border-top: none;
    border-right: 1px solid var(--border);
    background: var(--bg);
    overflow-y: auto;
    transform: translateX(-105%);
    transition: transform 0.25s ease;
  }

  .js body.nav-open .docs-sidebar { transform: none; }

  .js body.nav-open::after {
    content: "";
    position: fixed;
    inset: 64px 0 0 0;
    z-index: 80;
    background: rgba(0, 0, 0, 0.5);
  }
}

@media (max-width: 640px) {
  .docs-content h2 { font-size: 1.35rem; margin-top: 44px; }
  .link-grid { grid-template-columns: minmax(0, 1fr); }
  .pager { grid-template-columns: minmax(0, 1fr); }
  .pager .next { grid-column: auto; }
}

@media (max-width: 420px) {
  .brand .by { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .js .docs-sidebar { transition: none; }
}