/*
 * User manual reader.
 *
 * Standalone rather than an extension of the portal shell: the manual is read
 * by people who are not signed in (it is linked from the signup page), and the
 * portal shell needs a user, a menu and a permission set to render at all.
 *
 * Palette tokens mirror the portal's own so a reader who set dark mode there
 * sees the same page here.
 */

:root, [data-theme="light"] {
  --um-bg: #f6f7f9;
  --um-surface: #ffffff;
  --um-surface-alt: #f1f3f6;
  --um-border: #e2e5ea;
  --um-border-strong: #cdd2da;
  --um-text: #1f2430;
  --um-text-muted: #5c6472;
  --um-primary: #0d9488;
  --um-primary-soft: rgba(13, 148, 136, 0.10);
  --um-code-bg: #f4f5f7;
  --um-shadow: 0 1px 3px rgba(16, 24, 40, 0.06);
}

[data-theme="dark"] {
  --um-bg: #12151b;
  --um-surface: #1a1e26;
  --um-surface-alt: #222731;
  --um-border: #2c323d;
  --um-border-strong: #3a4150;
  --um-text: #e6e9ef;
  --um-text-muted: #a2abbb;
  --um-primary: #2dd4bf;
  --um-primary-soft: rgba(45, 212, 191, 0.12);
  --um-code-bg: #222731;
  --um-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

/* Section headings are linked from the contents panel; without this they land
   underneath the sticky bar. */
html { scroll-padding-top: 5rem; }

body {
  margin: 0;
  background: var(--um-bg);
  color: var(--um-text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.um-sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap; border: 0;
}

.um-skip {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--um-primary); color: #fff;
  padding: 0.6rem 1rem; border-radius: 0 0 8px 0; text-decoration: none;
}
.um-skip:focus { left: 0; }

/* ---------------------------------------------------------------- topbar -- */

.um-topbar {
  position: sticky; top: 0; z-index: 30;
  background: var(--um-surface);
  border-bottom: 1px solid var(--um-border);
  box-shadow: var(--um-shadow);
}

.um-topbar-inner {
  display: flex; align-items: center; gap: 0.75rem;
  max-width: 100rem; margin: 0 auto;
  padding: 0.7rem 1.25rem;
}

.um-brand {
  display: flex; align-items: center; gap: 0.6rem;
  color: var(--um-text); text-decoration: none;
  font-size: 0.95rem; letter-spacing: -0.01em;
  margin-inline-end: auto;
}
.um-brand i { color: var(--um-primary); font-size: 1.05rem; }
.um-brand strong { font-weight: 700; }

.um-topbar-actions { display: flex; align-items: center; gap: 0.5rem; }

.um-btn, .um-icon-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  border: 1px solid var(--um-border-strong);
  background: var(--um-surface);
  color: var(--um-text);
  border-radius: 8px;
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem; font-weight: 600;
  text-decoration: none; cursor: pointer;
  font-family: inherit;
}
.um-btn:hover, .um-icon-btn:hover {
  border-color: var(--um-primary);
  color: var(--um-primary);
}
.um-icon-btn { padding: 0.45rem 0.6rem; }

.um-nav-toggle {
  display: none;
  border: 1px solid var(--um-border-strong);
  background: var(--um-surface); color: var(--um-text);
  border-radius: 8px; padding: 0.45rem 0.65rem; cursor: pointer;
}

/* ----------------------------------------------------------------- shell -- */

.um-shell {
  display: grid;
  grid-template-columns: 17rem minmax(0, 1fr) 15rem;
  gap: 2rem;
  max-width: 100rem;
  margin: 0 auto;
  padding: 1.75rem 1.25rem 4rem;
  align-items: start;
}

/* --------------------------------------------------------------- sidebar -- */

.um-sidebar {
  position: sticky; top: 4.4rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  padding-inline-end: 0.4rem;
}

.um-filter { position: relative; margin-bottom: 1rem; }
.um-filter i {
  position: absolute; inset-inline-start: 0.75rem; top: 50%;
  transform: translateY(-50%);
  color: var(--um-text-muted); font-size: 0.8rem;
  pointer-events: none;
}
.um-filter input {
  width: 100%;
  padding: 0.5rem 0.75rem 0.5rem 2.1rem;
  border: 1px solid var(--um-border-strong);
  border-radius: 8px;
  background: var(--um-surface);
  color: var(--um-text);
  font: inherit; font-size: 0.85rem;
}
html[dir="rtl"] .um-filter input { padding: 0.5rem 2.1rem 0.5rem 0.75rem; }
.um-filter input:focus {
  outline: 2px solid var(--um-primary);
  outline-offset: 1px;
  border-color: var(--um-primary);
}

.um-nav-part { margin-bottom: 1.25rem; }

.um-nav-part-title {
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--um-text-muted);
  margin: 0 0 0.4rem;
  padding-inline-start: 0.6rem;
}

.um-nav-list { list-style: none; margin: 0; padding: 0; }

.um-nav-link {
  display: flex; align-items: baseline; gap: 0.55rem;
  padding: 0.35rem 0.6rem;
  border-radius: 7px;
  color: var(--um-text-muted);
  text-decoration: none;
  font-size: 0.855rem;
  line-height: 1.4;
  border-inline-start: 2px solid transparent;
}
.um-nav-link:hover { background: var(--um-surface-alt); color: var(--um-text); }
.um-nav-link.is-current {
  background: var(--um-primary-soft);
  color: var(--um-primary);
  font-weight: 650;
  border-inline-start-color: var(--um-primary);
}

.um-nav-num {
  flex-shrink: 0;
  min-width: 1.35rem;
  font-variant-numeric: tabular-nums;
  font-size: 0.75rem;
  color: var(--um-text-muted);
  font-weight: 600;
}
.um-nav-link.is-current .um-nav-num { color: var(--um-primary); }

.um-nav-index { margin-bottom: 1.1rem; font-weight: 600; }

.um-nav-empty {
  color: var(--um-text-muted); font-size: 0.85rem;
  padding: 0.5rem 0.6rem;
}

/* ------------------------------------------------------------------ main -- */

.um-main { min-width: 0; }

.um-doc {
  background: var(--um-surface);
  border: 1px solid var(--um-border);
  border-radius: 12px;
  box-shadow: var(--um-shadow);
  padding: 2.25rem 2.5rem 2.75rem;
}

.um-doc > *:first-child { margin-top: 0; }
.um-doc > *:last-child { margin-bottom: 0; }

.um-doc h1 {
  font-size: 1.85rem; font-weight: 750; line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  padding-bottom: 0.9rem;
  border-bottom: 2px solid var(--um-border);
}
.um-doc h2 {
  font-size: 1.25rem; font-weight: 700; line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.9rem;
  padding-top: 0.35rem;
}
.um-doc h3 { font-size: 1.03rem; font-weight: 680; margin: 1.9rem 0 0.7rem; }
.um-doc h4 { font-size: 0.94rem; font-weight: 680; margin: 1.5rem 0 0.55rem; }

.um-doc p { margin: 0 0 1rem; }
.um-doc strong { font-weight: 660; color: var(--um-text); }

.um-doc a { color: var(--um-primary); text-decoration: none; }
.um-doc a:hover { text-decoration: underline; }

.um-doc ul, .um-doc ol { margin: 0 0 1rem; padding-inline-start: 1.4rem; }
.um-doc li { margin-bottom: 0.35rem; }
.um-doc li > ul, .um-doc li > ol { margin-top: 0.35rem; }

.um-doc hr {
  border: 0; border-top: 1px solid var(--um-border);
  margin: 2.25rem 0;
}

.um-doc blockquote {
  margin: 0 0 1.15rem;
  padding: 0.75rem 1.1rem;
  border-inline-start: 3px solid var(--um-primary);
  background: var(--um-primary-soft);
  border-radius: 0 8px 8px 0;
  color: var(--um-text-muted);
}
.um-doc blockquote p:last-child { margin-bottom: 0; }

/* Inline code: the manual uses it for URLs and field names, so it has to stay
   readable at body size rather than shrink away. */
.um-doc code {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.855em;
  background: var(--um-code-bg);
  border: 1px solid var(--um-border);
  border-radius: 5px;
  padding: 0.1em 0.36em;
  word-break: break-word;
}

/* Fenced blocks hold ASCII diagrams and checklists. They must never widen the
   page, so they scroll inside their own box. */
.um-doc pre {
  background: var(--um-code-bg);
  border: 1px solid var(--um-border);
  border-radius: 9px;
  padding: 1rem 1.15rem;
  overflow-x: auto;
  margin: 0 0 1.2rem;
  line-height: 1.55;
}
.um-doc pre code {
  background: none; border: 0; padding: 0;
  font-size: 0.82rem; white-space: pre; word-break: normal;
}

/* Same rule for tables — many are wide reference grids. */
.um-doc table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 0 0 1.3rem;
  font-size: 0.875rem;
}
.um-doc thead th {
  text-align: start;
  background: var(--um-surface-alt);
  border-bottom: 2px solid var(--um-border-strong);
  padding: 0.6rem 0.8rem;
  font-weight: 680;
  white-space: nowrap;
}
.um-doc tbody td {
  border-bottom: 1px solid var(--um-border);
  padding: 0.6rem 0.8rem;
  vertical-align: top;
}
.um-doc tbody tr:last-child td { border-bottom: 0; }
.um-doc tbody tr:hover { background: var(--um-surface-alt); }

/* ----------------------------------------------------------------- pager -- */

.um-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.um-pager-link {
  display: flex; flex-direction: column; gap: 0.2rem;
  padding: 0.9rem 1.1rem;
  background: var(--um-surface);
  border: 1px solid var(--um-border);
  border-radius: 10px;
  text-decoration: none;
  box-shadow: var(--um-shadow);
}
.um-pager-link:hover { border-color: var(--um-primary); }
.um-pager-next { text-align: end; }
.um-pager-dir {
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--um-text-muted);
}
.um-pager-title { font-weight: 640; color: var(--um-text); font-size: 0.9rem; }

/* ------------------------------------------------------------------- toc -- */

.um-toc {
  position: sticky; top: 4.4rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
  font-size: 0.82rem;
}
.um-toc-title {
  font-size: 0.68rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--um-text-muted);
  margin: 0 0 0.5rem;
}
.um-toc ul { list-style: none; margin: 0; padding: 0; }
.um-toc li { margin: 0; }
.um-toc a {
  display: block;
  padding: 0.28rem 0.6rem;
  color: var(--um-text-muted);
  text-decoration: none;
  border-inline-start: 2px solid var(--um-border);
  line-height: 1.4;
}
.um-toc a:hover { color: var(--um-primary); border-inline-start-color: var(--um-primary); }

/* ---------------------------------------------------------- responsive --- */

@media (max-width: 1200px) {
  .um-shell { grid-template-columns: 16rem minmax(0, 1fr); }
  .um-toc { display: none; }
}

@media (max-width: 900px) {
  .um-shell { grid-template-columns: minmax(0, 1fr); gap: 0; padding-top: 1rem; }
  .um-nav-toggle { display: inline-flex; }
  .um-sidebar {
    display: none;
    position: static; max-height: none; overflow: visible;
    background: var(--um-surface);
    border: 1px solid var(--um-border);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1.25rem;
  }
  .um-sidebar.is-open { display: block; }
  .um-doc { padding: 1.5rem 1.25rem 1.75rem; border-radius: 10px; }
  .um-doc h1 { font-size: 1.5rem; }
  .um-pager { grid-template-columns: 1fr; }
  .um-pager-next { text-align: start; }
  .um-btn-label { display: none; }
}

/* ----------------------------------------------------------------- print -- */

@media print {
  .um-topbar, .um-sidebar, .um-toc, .um-pager, .um-skip { display: none !important; }
  .um-shell { display: block; padding: 0; max-width: none; }
  .um-doc { border: 0; box-shadow: none; padding: 0; }
  .um-doc pre, .um-doc table { break-inside: avoid; }
  .um-doc h2, .um-doc h3 { break-after: avoid; }
}