/*
 * Domotion user manual styles.
 *
 * Single stylesheet, dark default with a light-mode override via
 * `prefers-color-scheme: light`. Layout: sticky topbar, two-column
 * (sidebar + content) above 880px, single-column below with a
 * collapsible sidebar.
 */

/* ── Tokens ── */

:root {
  color-scheme: dark;

  /* Surfaces */
  --bg:        #0d1117;
  --bg-soft:   #161b22;
  --bg-card:   #1a2029;
  --line:      #30363d;
  --line-soft: #21262d;

  /* Text */
  --fg:        #e6edf3;
  --fg-muted:  #8b949e;
  --fg-dim:    #6e7681;

  /* Accents */
  --accent:        #79b8ff;
  --accent-strong: #58a6ff;
  --accent-soft:   rgba(121, 184, 255, 0.15);
  --warn:          #d29922;
  --bad:           #ff7b72;
  --good:          #56d364;

  /* Type */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* Geometry */
  --topbar-h:   56px;
  --sidebar-w:  260px;
  --content-max: 760px;
  --radius:     6px;
  --radius-lg:  10px;
  --shadow-sm:  0 1px 0 rgba(0, 0, 0, 0.2);
}

@media (prefers-color-scheme: light) {
  :root {
    color-scheme: light;
    --bg:        #ffffff;
    --bg-soft:   #f6f8fa;
    --bg-card:   #ffffff;
    --line:      #d0d7de;
    --line-soft: #eaeef2;
    --fg:        #1f2328;
    --fg-muted:  #57606a;
    --fg-dim:    #6e7781;
    --accent:        #0969da;
    --accent-strong: #0860c4;
    --accent-soft:   rgba(9, 105, 218, 0.1);
    --shadow-sm:  0 1px 0 rgba(31, 35, 40, 0.04);
  }
}

/* ── Reset & base ── */

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -10000px;
  top: 8px;
  background: var(--accent);
  color: #000;
  padding: 8px 12px;
  border-radius: 4px;
  z-index: 100;
}
.skip-link:focus { left: 8px; }

/* ── Topbar ── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 16px;
  height: var(--topbar-h);
  padding: 0 20px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  font-weight: 600;
  font-size: 17px;
}
.brand:hover { text-decoration: none; color: var(--accent); }
.brand-logo {
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
}
.topnav {
  margin-left: auto;
  display: flex;
  gap: 18px;
  align-items: center;
  font-size: 14px;
}
.topnav a {
  color: var(--fg-muted);
  font-weight: 500;
}
.topnav a:hover { color: var(--fg); text-decoration: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 32px;
  height: 32px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 4px;
  cursor: pointer;
  padding: 5px 6px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--fg);
  border-radius: 2px;
}

/* ── Layout ── */

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  align-items: start;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Sidebar ── */

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  align-self: start;
  height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 24px 16px 24px 0;
  border-right: 1px solid var(--line-soft);
}
.sidebar nav { font-size: 14px; }
.nav-list { list-style: none; padding: 0; margin: 0; }
.nav-list .sec { margin-bottom: 18px; }
.nav-list .sec h3 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
  margin: 0 0 6px;
  padding: 0 12px;
}
.nav-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-list a {
  display: block;
  padding: 5px 12px;
  border-radius: 4px;
  color: var(--fg-muted);
  border-left: 2px solid transparent;
  margin-left: -2px;
}
.nav-list a:hover {
  color: var(--fg);
  background: var(--bg-soft);
  text-decoration: none;
}
.nav-list a.active {
  color: var(--fg);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 600;
}
.nav-list .home-link a { font-weight: 600; color: var(--fg); }

/* ── Content ── */

.content {
  min-width: 0; /* prevent grid blowout from <pre> */
  padding: 32px 16px 60px 32px;
}
.breadcrumb {
  font-size: 13px;
  color: var(--fg-muted);
  margin-bottom: 20px;
}
.breadcrumb .sep { margin: 0 6px; color: var(--fg-dim); }
.breadcrumb .current { color: var(--fg); }

.prose {
  max-width: var(--content-max);
}

.page-head { margin-bottom: 28px; }
.page-head h1 {
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 8px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.page-head .subtitle {
  font-size: 17px;
  color: var(--fg-muted);
  margin: 0;
  font-weight: 400;
}

/* Long-form prose */
.prose h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 40px 0 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line-soft);
}
.prose h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 28px 0 8px;
}
.prose h4 {
  font-size: 15px;
  font-weight: 600;
  margin: 20px 0 4px;
  color: var(--fg-muted);
}
.prose p { margin: 12px 0; }
.prose ul, .prose ol { margin: 12px 0; padding-left: 24px; }
.prose li { margin: 4px 0; }
.prose li > p { margin: 4px 0; }

.prose strong { color: var(--fg); font-weight: 600; }
.prose em { color: var(--fg); font-style: italic; }

.prose blockquote {
  margin: 16px 0;
  padding: 8px 16px;
  border-left: 3px solid var(--line);
  color: var(--fg-muted);
  background: var(--bg-soft);
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* ── Code ── */

.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--fg);
  white-space: nowrap;
}
.prose pre {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  overflow-x: auto;
  margin: 16px 0;
  font-size: 13.5px;
  line-height: 1.55;
}
.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
  white-space: pre;
}

/* Inline syntax highlighting via class names. Tokens:
   .tk-k  keyword     .tk-s  string     .tk-n  number
   .tk-c  comment     .tk-f  function   .tk-t  type
   .tk-p  punctuation .tk-v  variable
*/
.tk-k { color: #ff7b72; }
.tk-s { color: #a5d6ff; }
.tk-n { color: #79c0ff; }
.tk-c { color: var(--fg-dim); font-style: italic; }
.tk-f { color: #d2a8ff; }
.tk-t { color: #ffa657; }
.tk-p { color: var(--fg-muted); }
.tk-v { color: var(--fg); }

@media (prefers-color-scheme: light) {
  .tk-k { color: #cf222e; }
  .tk-s { color: #0a3069; }
  .tk-n { color: #0550ae; }
  .tk-f { color: #8250df; }
  .tk-t { color: #953800; }
}

/* ── Tables ── */

.prose table {
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
  width: 100%;
}
.prose th, .prose td {
  border: 1px solid var(--line);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
.prose th {
  background: var(--bg-soft);
  font-weight: 600;
}

/* ── Callouts ── */

.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  margin: 18px 0;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-soft);
}
.callout .icon {
  font-size: 18px;
  line-height: 1.4;
}
.callout .body p:first-child { margin-top: 0; }
.callout .body p:last-child { margin-bottom: 0; }
.callout.note   { border-left: 3px solid var(--accent); }
.callout.warn   { border-left: 3px solid var(--warn); }
.callout.tip    { border-left: 3px solid var(--good); }
.callout.danger { border-left: 3px solid var(--bad); }

/* ── API page primitives ── */

.sig {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin: 16px 0;
  overflow-x: auto;
  white-space: pre;
}

.params { margin: 8px 0; }
.params .row {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(120px, 1.5fr) 3fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14px;
}
.params .row:last-child { border-bottom: none; }
.params .name {
  font-family: var(--font-mono);
  font-weight: 600;
}
.params .type {
  font-family: var(--font-mono);
  color: var(--accent-strong);
  font-size: 13px;
}
.params .desc { color: var(--fg-muted); }

/* ── Prev/next nav ── */

.prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 48px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}
.prev-next a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--fg);
}
.prev-next a:hover {
  text-decoration: none;
  border-color: var(--accent);
}
.prev-next .pn-next { text-align: right; }
.prev-next .pn-label { font-size: 12px; color: var(--fg-muted); }
.prev-next .pn-title { font-weight: 600; }

/* ── Footer ── */

.footer {
  border-top: 1px solid var(--line-soft);
  padding: 24px 20px;
  text-align: center;
  font-size: 13px;
  color: var(--fg-muted);
  margin-top: 40px;
}
.footer a { color: var(--fg-muted); }
.footer a:hover { color: var(--fg); }

/* ── Home page (no sidebar) ── */

body.home .layout {
  grid-template-columns: 1fr;
}
body.home .sidebar { display: none; }
body.home .content {
  padding: 32px 20px 60px;
  max-width: 1080px;
  margin: 0 auto;
}
body.home .prose { max-width: 100%; }

.hero {
  text-align: center;
  padding: 40px 20px 30px;
  margin-bottom: 30px;
}
.hero h1 {
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
  font-weight: 700;
}
.hero .tagline {
  font-size: 19px;
  color: var(--fg-muted);
  max-width: 640px;
  margin: 0 auto 24px;
}
.hero .cta {
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  color: var(--fg);
}
.btn:hover { text-decoration: none; border-color: var(--accent); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0d1117;
}
.btn.primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  margin: 24px 0;
}
.toc-card {
  display: block;
  padding: 18px 18px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: inherit;
}
.toc-card:hover {
  text-decoration: none;
  border-color: var(--accent);
  transform: translateY(-1px);
}
.toc-card h3 { margin: 0 0 4px; font-size: 16px; font-weight: 600; }
.toc-card p  { margin: 0 0 10px; font-size: 14px; color: var(--fg-muted); }
.toc-card ul { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.toc-card li { display: inline; color: var(--fg-muted); }
.toc-card li:not(:last-child)::after { content: " · "; color: var(--fg-dim); }

/* ── Mobile ── */

@media (max-width: 880px) {
  .layout { grid-template-columns: 1fr; padding: 0; }
  .sidebar {
    position: fixed;
    left: 0;
    top: var(--topbar-h);
    width: min(320px, 80vw);
    height: calc(100vh - var(--topbar-h));
    background: var(--bg);
    border-right: 1px solid var(--line);
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 180ms ease;
    padding: 20px 12px;
  }
  .sidebar.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .topnav { display: none; }
  .content { padding: 24px 16px 40px; }
  .hero h1 { font-size: 32px; }
  .hero .tagline { font-size: 16px; }
  .prev-next { grid-template-columns: 1fr; }
  .params .row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}