:root {
  color-scheme: light dark;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --surface-soft: #f7eee9;
  --text: #000f22;
  --muted: #667085;
  --border: #e5e7ec;
  --primary: #000f22;
  --primary-strong: #1b2436;
  --primary-contrast: #ffffff;
  --accent: #d4a386;
  --accent-strong: #925b3e;
  --success: #22a06b;
  --warning: #f59e0b;
  --danger: #e5484d;
  --info: #ff7ba6;
  --shadow: 0 12px 30px rgba(0, 15, 34, .07);
  --radius: 8px;
}

[data-theme="dark"] {
  --bg: #0c111d;
  --surface: #182033;
  --surface-soft: #1b2436;
  --text: #ffffff;
  --muted: #aeb7c6;
  --border: #283249;
  --primary: #d4a386;
  --primary-strong: #e4b99e;
  --primary-contrast: #000f22;
  --accent: #d4a386;
  --accent-strong: #e4b99e;
  --success: #22a06b;
  --warning: #f59e0b;
  --danger: #e5484d;
  --info: #ff7ba6;
  --shadow: 0 16px 36px rgba(0, 0, 0, .22);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Roboto, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.58;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 5;
  padding: 8px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.skip-link:focus { top: 12px; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 292px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 18px;
  background: #000f22;
  border-right: 1px solid #1b2436;
  overflow-y: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  overflow: hidden;
  background-color: #000f22;
  background-image: url("app_icon.png");
  background-position: center;
  background-size: cover;
  border: 1px solid rgba(212, 163, 134, .4);
  color: transparent;
  font-size: 0;
}

.brand-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand strong {
  display: block;
  color: #ffffff;
  font-size: 18px;
}

.brand span {
  display: block;
  color: #aeb7c6;
  font-size: 12px;
}

.top-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.icon-button,
.menu-button {
  min-width: 38px;
  min-height: 38px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font: inherit;
}

.sidebar .icon-button {
  border-color: #283249;
  background: #1b2436;
  color: #ffffff;
}

.menu-button { display: none; }

.search-box {
  position: relative;
  margin-bottom: 18px;
}

.search-box input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--text);
  font: inherit;
}

.sidebar .search-box input {
  border-color: #283249;
  background: #1b2436;
  color: #ffffff;
}

.sidebar .search-box input::placeholder {
  color: #aeb7c6;
}

.search-results {
  display: none;
  position: absolute;
  z-index: 4;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: 360px;
  overflow: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.search-results.active { display: block; }

.search-results a,
.search-empty {
  display: block;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.search-results small {
  display: block;
  color: var(--muted);
}

.nav-group {
  margin: 18px 0;
}

.nav-group-title {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.sidebar .nav-group-title {
  color: #aeb7c6;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--text);
  font-size: 14px;
  font-weight: 400;
}

.sidebar .nav-link {
  color: #ffffff;
}

.nav-link.active,
.nav-link:hover {
  background: var(--surface-soft);
  text-decoration: none;
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
  background: #d4a386;
  color: #000f22;
}

.content-wrap {
  min-width: 0;
}

.page-header {
  padding: 42px clamp(22px, 5vw, 68px) 22px;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--border);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 980px;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.04;
  letter-spacing: 0;
}

.lead {
  max-width: 900px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.page-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 34px;
  padding: 18px clamp(22px, 5vw, 68px) 54px;
}

main {
  min-width: 0;
}

.toc {
  position: sticky;
  top: 22px;
  align-self: start;
  padding: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.toc strong {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
}

.toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  font-size: 13px;
}

.section {
  margin: 0 0 22px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.section h2 {
  margin: 0 0 12px;
  font-size: 25px;
  letter-spacing: 0;
}

.section h3 {
  margin: 22px 0 8px;
  font-size: 17px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  padding: 16px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card h3 {
  margin-top: 0;
}

.meta-list {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.meta-list li {
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}

.note,
.warning,
.todo {
  margin: 16px 0;
  padding: 13px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-soft);
}

.warning { border-color: color-mix(in srgb, var(--warning) 45%, var(--border)); }
.todo { border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.mobile-bar {
  background: #000f22;
  color: #ffffff;
}

.mobile-bar .icon-button,
.mobile-bar .menu-button {
  border-color: #283249;
  background: #1b2436;
  color: #ffffff;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-soft);
}

code {
  padding: 2px 5px;
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 5px;
}

.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 24px;
}

.pager a {
  flex: 1;
  padding: 13px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 800;
}

.pager a:last-child { text-align: right; }

.footer {
  padding: 24px clamp(22px, 5vw, 68px) 38px;
  color: var(--muted);
  font-size: 13px;
}

.screenshot {
  margin: 20px 0 0;
}

.screenshot a {
  display: block;
  line-height: 0;
}

.screenshot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.screenshot figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.screenshot--mobile {
  max-width: 420px;
  margin-right: auto;
  margin-left: auto;
}

@media (max-width: 1020px) {
  .app-shell {
    display: block;
  }

  .menu-button { display: inline-grid; }

  .sidebar {
    position: fixed;
    z-index: 10;
    inset: 0 auto 0 0;
    width: min(88vw, 320px);
    transform: translateX(-103%);
    transition: transform .18s ease;
  }

  body.nav-open .sidebar {
    transform: translateX(0);
  }

  .page-grid {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    order: -1;
  }

  .mobile-bar {
    position: sticky;
    top: 0;
    z-index: 3;
    display: flex;
    justify-content: space-between;
    padding: 10px 12px;
    background: #000f22;
    border-bottom: 1px solid #283249;
  }
}

@media (min-width: 1021px) {
  .mobile-bar { display: none; }
}

@media (max-width: 760px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 18px;
  }

  .pager {
    flex-direction: column;
  }

  .pager a:last-child { text-align: left; }

  .screenshot--mobile {
    max-width: 340px;
  }
}