/*
 * The guide's stylesheet. The colors follow the reader's light or dark
 * preference, and match the Haddock theme in ../haddock/hmssql.css.
 */

:root {
  color-scheme: light dark;

  --bg: #ffffff;
  --bg-soft: #f7f6fb;
  --bg-code: #f6f5fa;
  --bg-hover: #efedf6;
  --bg-current: #ebe6fa;
  --border: #e3e0ec;
  --border-strong: #cfcadc;
  --text: #24212f;
  --muted: #615c72;
  --faint: #8a859a;
  --heading: #17141f;
  --accent: #5e5184;
  --link: #5b3fb0;
  --link-hover: #3f2690;
  --mark: #fff0a0;
  --mark-text: #24212f;
  --shadow: 0 10px 30px rgba(30, 20, 60, 0.14), 0 2px 6px rgba(30, 20, 60, 0.08);

  --hl-kw: #a2337f;
  --hl-con: #2b59a8;
  --hl-str: #2d7a3a;
  --hl-num: #b0530b;
  --hl-com: #737083;
  --hl-op: #8c3a6b;
  --hl-glyph: #7a4bc2;
  --hl-pragma: #127a78;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --topbar: 3.5rem;
  --sidebar: 17.5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18171d;
    --bg-soft: #1e1d25;
    --bg-code: #22212a;
    --bg-hover: #2a2833;
    --bg-current: #322c47;
    --border: #312f3b;
    --border-strong: #464352;
    --text: #dddbe5;
    --muted: #a19eb0;
    --faint: #7f7b8e;
    --heading: #f1eff8;
    --accent: #b9aee6;
    --link: #c4b0ff;
    --link-hover: #e0d6ff;
    --mark: #5c4f16;
    --mark-text: #fff5cc;
    --shadow: 0 12px 34px rgba(0, 0, 0, 0.5), 0 2px 6px rgba(0, 0, 0, 0.4);

    --hl-kw: #f07fbf;
    --hl-con: #8fb8ff;
    --hl-str: #9fd88e;
    --hl-num: #f5a97f;
    --hl-com: #8a8699;
    --hl-op: #e59ac7;
    --hl-glyph: #c3a6ff;
    --hl-pragma: #6fd1c8;
  }
}

/* Page structure ----------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--bg);
  scroll-padding-top: calc(var(--topbar) + 1rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; text-underline-offset: 0.18em; }

.skip {
  position: absolute;
  left: -100vw;
}
.skip:focus {
  left: 1rem;
  top: 0.75rem;
  z-index: 100;
  padding: 0.4rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
  height: var(--topbar);
  padding: 0 1.25rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  flex: none;
  width: calc(var(--sidebar) - 2.5rem);
  color: var(--heading);
}
.brand:hover { color: var(--heading); text-decoration: none; }
.brand-name { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand-sub { color: var(--faint); font-size: 0.95rem; }

.toplinks {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
  font-size: 0.93rem;
  white-space: nowrap;
}
.toplinks a { color: var(--muted); }
.toplinks a:hover { color: var(--link); text-decoration: none; }

.nav-toggle {
  display: none;
  flex: none;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0.45rem;
  margin-left: -0.5rem;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--text);
  cursor: pointer;
}
.nav-toggle:hover { background: var(--bg-hover); }
.nav-toggle svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }

.layout {
  display: flex;
  align-items: flex-start;
}

.sidebar {
  position: sticky;
  top: var(--topbar);
  flex: none;
  width: var(--sidebar);
  height: calc(100vh - var(--topbar));
  height: calc(100dvh - var(--topbar));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.25rem 0.75rem 3rem 1rem;
  border-right: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 0.92rem;
}

.content {
  flex: 1;
  min-width: 0;
  padding: 2.25rem 2.5rem 4rem;
}

.prose, .pager, .page-footer {
  max-width: 46rem;
  margin-left: auto;
  margin-right: auto;
}

/* The tree ------------------------------------------------------------------ */

.tree, .on-page {
  list-style: none;
  margin: 0;
  padding: 0;
}

.tree-section {
  margin: 1.4rem 0 0.35rem 0.6rem;
  color: var(--faint);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tree a {
  display: block;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  color: var(--text);
}
.tree a:hover { background: var(--bg-hover); text-decoration: none; }
.tree a[aria-current="page"] {
  background: var(--bg-current);
  color: var(--heading);
  font-weight: 600;
}

.on-page {
  margin: 0.25rem 0 0.5rem 0.95rem;
  padding-left: 0.5rem;
  border-left: 1px solid var(--border-strong);
}
.on-page a {
  padding: 0.18rem 0.6rem;
  color: var(--muted);
  font-size: 0.86rem;
}
.on-page a.active { color: var(--link); }

/* The page's text ------------------------------------------------------------ */

.prose {
  font-size: 1.0625rem;
  line-height: 1.7;
  overflow-wrap: break-word;
}

.prose > :first-child { margin-top: 0; }

.eyebrow {
  margin: 0 0 0.4rem;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  color: var(--heading);
  line-height: 1.25;
  letter-spacing: -0.015em;
}
.prose h1 { margin: 0 0 1.25rem; font-size: 2.15rem; font-weight: 750; letter-spacing: -0.025em; }
.prose h2 {
  margin: 2.6rem 0 0.8rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
  font-size: 1.5rem;
  font-weight: 680;
}
.prose h3 { margin: 2rem 0 0.6rem; font-size: 1.2rem; font-weight: 650; }
.prose h4 { margin: 1.6rem 0 0.5rem; font-size: 1.05rem; font-weight: 650; }

.prose .anchor {
  margin-left: 0.45rem;
  color: var(--faint);
  font-weight: 400;
  opacity: 0;
  transition: opacity 0.12s;
}
.prose h2:hover .anchor, .prose h3:hover .anchor, .prose h4:hover .anchor, .prose .anchor:focus { opacity: 1; }
.prose .anchor:hover { color: var(--link); text-decoration: none; }

.prose p, .prose ul, .prose ol, .prose blockquote, .prose .table-wrap, .prose .code-block {
  margin: 0 0 1.1rem;
}
.prose ul, .prose ol { padding-left: 1.5rem; }
.prose li { margin: 0.3rem 0; }
.prose li > ul, .prose li > ol { margin: 0.3rem 0 0; }
.prose li::marker { color: var(--faint); }

.prose blockquote {
  padding: 0.2rem 1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.prose hr { border: 0; border-top: 1px solid var(--border); margin: 2rem 0; }
.prose strong { color: var(--heading); font-weight: 650; }

.prose code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  padding: 0.12em 0.36em;
  border-radius: 5px;
  background: var(--bg-code);
  border: 1px solid var(--border);
}

.prose h2 code, .prose h3 code, .prose h4 code {
  font-size: 0.9em;
  border-color: transparent;
}

.prose a.api code {
  color: var(--link);
  border-color: color-mix(in srgb, var(--link) 28%, var(--border));
}
.prose a.api:hover { text-decoration: none; }
.prose a.api:hover code {
  background: var(--bg-current);
  border-color: color-mix(in srgb, var(--link) 55%, var(--border));
}

/* Code blocks ---------------------------------------------------------------- */

.code-block {
  position: relative;
}

.code-block pre {
  margin: 0;
  padding: 0.95rem 1.1rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-code);
  font-size: 0.86rem;
  line-height: 1.6;
  tab-size: 4;
}

.code-block pre code {
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  font-size: inherit;
  color: var(--text);
}

.code-block a.api { color: inherit; text-decoration: underline dotted color-mix(in srgb, currentColor 45%, transparent); text-underline-offset: 0.22em; }
.code-block a.api:hover { color: var(--link); text-decoration-style: solid; }

.copy {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--bg);
  color: var(--muted);
  font: 0.75rem var(--font-sans);
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.12s;
}
.code-block:hover .copy, .copy:focus-visible { opacity: 1; }
.copy:hover { color: var(--text); border-color: var(--accent); }
@media (hover: none) { .copy { opacity: 1; } }

.hl-kw { color: var(--hl-kw); }
.hl-con { color: var(--hl-con); }
.hl-str { color: var(--hl-str); }
.hl-num { color: var(--hl-num); }
.hl-com { color: var(--hl-com); font-style: italic; }
.hl-op { color: var(--hl-op); }
.hl-glyph { color: var(--hl-glyph); }
.hl-pragma { color: var(--hl-pragma); }

/* Tables --------------------------------------------------------------------- */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  line-height: 1.5;
}
.prose th, .prose td {
  padding: 0.55rem 0.85rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
.prose th { background: var(--bg-soft); color: var(--heading); font-weight: 650; }
.prose tbody tr:last-child td { border-bottom: 0; }

/* Previous and next ---------------------------------------------------------- */

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 3rem;
}

.pager a {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.12s, background 0.12s;
}
.pager a:hover { border-color: var(--accent); background: var(--bg-soft); text-decoration: none; }
.pager .next { text-align: right; grid-column: 2; }
.pager-dir { color: var(--faint); font-size: 0.8rem; }
.pager .prev .pager-dir::before { content: "← "; }
.pager .next .pager-dir::after { content: " →"; }
.pager-title { color: var(--link); font-weight: 600; }

.page-footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
}
.page-footer a { color: var(--faint); }
.page-footer a:hover { color: var(--link); }

/* Search --------------------------------------------------------------------- */

.search {
  position: relative;
  flex: 1;
  max-width: 30rem;
}

.search input {
  width: 100%;
  height: 2.3rem;
  padding: 0 2.2rem 0 2.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-soft);
  color: var(--text);
  font: inherit;
  font-size: 0.93rem;
  outline: none;
  transition: border-color 0.12s, box-shadow 0.12s, background 0.12s;
}
.search input::placeholder { color: var(--faint); }
.search input:focus {
  border-color: var(--accent);
  background: var(--bg);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.search input::-webkit-search-cancel-button { display: none; }

.search-icon {
  position: absolute;
  left: 0.7rem;
  top: 50%;
  width: 1rem;
  height: 1rem;
  transform: translateY(-50%);
  fill: none;
  stroke: var(--faint);
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: none;
}

.search-key {
  position: absolute;
  right: 0.55rem;
  top: 50%;
  transform: translateY(-50%);
  padding: 0 0.4rem;
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--faint);
  font: 0.75rem/1.35 var(--font-mono);
  pointer-events: none;
}
.search input:focus ~ .search-key { display: none; }

.search-results {
  position: absolute;
  top: calc(100% + 0.4rem);
  left: 0;
  width: min(40rem, calc(100vw - 2rem));
  max-height: min(75vh, 40rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg);
  box-shadow: var(--shadow);
  font-size: 0.92rem;
}

.sr-group {
  margin: 0.5rem 0.6rem 0.3rem;
  color: var(--faint);
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sr-item, .sr-sub {
  display: block;
  padding: 0.45rem 0.65rem;
  border-radius: 8px;
  color: var(--text);
}
.sr-item:hover, .sr-sub:hover { text-decoration: none; }
.sr-item.selected, .sr-sub.selected { background: var(--bg-current); }

.sr-title { color: var(--heading); font-weight: 600; }
.sr-crumb { margin-left: 0.4rem; color: var(--faint); font-size: 0.8rem; font-weight: 400; }

.sr-sub {
  margin-left: 0.9rem;
  border-left: 2px solid var(--border);
  border-radius: 0 8px 8px 0;
}
.sr-heading { display: block; color: var(--link); font-weight: 550; }
.sr-snippet { display: block; color: var(--muted); font-size: 0.85rem; line-height: 1.45; }
.sr-item .sr-snippet { margin-top: 0.1rem; }

.sr-api { display: flex; align-items: baseline; gap: 0.6rem; }
.sr-api code { color: var(--link); font: 0.88rem var(--font-mono); }
.sr-module { color: var(--faint); font-size: 0.8rem; }

.search-results mark {
  padding: 0 0.1em;
  border-radius: 3px;
  background: var(--mark);
  color: var(--mark-text);
}

.sr-empty { padding: 0.8rem; color: var(--muted); }
.sr-hint { padding: 0.4rem 0.65rem 0.2rem; color: var(--faint); font-size: 0.75rem; border-top: 1px solid var(--border); margin-top: 0.4rem; }
.sr-hint kbd { font: 0.7rem var(--font-mono); padding: 0 0.3rem; border: 1px solid var(--border-strong); border-radius: 3px; }

/* Narrow screens ------------------------------------------------------------- */

@media (max-width: 1100px) {
  .content { padding: 2rem 2rem 4rem; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .brand { width: auto; }
  .brand-sub { display: none; }
  .toplinks { display: none; }
  .topbar { gap: 0.75rem; padding: 0 1rem; }
  .search { max-width: none; }
  .search-key { display: none; }
  .search-results { position: fixed; top: calc(var(--topbar) + 0.3rem); left: 0.75rem; right: 0.75rem; width: auto; }

  .sidebar {
    position: fixed;
    top: var(--topbar);
    left: 0;
    z-index: 15;
    width: min(20rem, 85vw);
    transform: translateX(-100%);
    visibility: hidden;
    transition: transform 0.2s ease, visibility 0.2s;
  }
  .nav-open .sidebar { transform: none; visibility: visible; box-shadow: var(--shadow); }
  .nav-open .layout::after {
    content: "";
    position: fixed;
    inset: var(--topbar) 0 0 0;
    z-index: 10;
    background: rgba(10, 8, 20, 0.35);
  }
  .sidebar .toplinks-mobile { display: block; }

  .content { padding: 1.5rem 1rem 3rem; }
  .prose { font-size: 1rem; }
  .prose h1 { font-size: 1.75rem; }
  .prose h2 { font-size: 1.3rem; }
  .code-block pre { font-size: 0.8rem; padding: 0.8rem 0.9rem; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}

.toplinks-mobile { display: none; margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.toplinks-mobile a { display: block; padding: 0.3rem 0.6rem; color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

@media print {
  .topbar, .sidebar, .pager, .page-footer, .copy { display: none; }
  .content { padding: 0; }
  .prose { max-width: none; }
}