/*
 * Shared chrome for the Fideo documentation section.
 * Design tokens match examples/index.html so the docs feel like the same site.
 */

:root {
  --background: hsl(240 10% 3.9%);
  --foreground: hsl(0 0% 98%);
  --card: hsl(240 6% 7%);
  --card-elevated: hsl(240 5% 10%);
  --muted: hsl(240 4% 13%);
  --muted-foreground: hsl(240 5% 64.9%);
  --border: hsl(240 4% 16%);
  --border-strong: hsl(240 4% 22%);
  --accent: #6cf2c0;
  --accent-foreground: hsl(160 60% 10%);
  --warn: #ffb454;
  --danger: #ff8b7a;
  --radius: 0.5rem;
  --nav-height: 56px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 24px); }

body {
  background: var(--background);
  color: var(--foreground);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-feature-settings: "cv11", "ss01", "ss03";
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

::selection { background: var(--accent); color: var(--accent-foreground); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre, kbd, .mono {
  font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
}

code:not(pre code) {
  padding: 1px 6px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--foreground);
  white-space: nowrap;
}

kbd {
  padding: 2px 7px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  font-size: 0.8em;
  color: var(--foreground);
}

/* ---------- top nav ---------- */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-height);
  background: hsla(240, 10%, 3.9%, 0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.top-nav-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 100%;
  padding: 0 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--foreground);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.brand-mark img { display: block; width: 16px; height: 16px; }
.brand .tag {
  padding: 1px 7px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted-foreground);
}
.top-nav-links {
  display: flex;
  gap: 18px;
  margin-left: auto;
  font-size: 13px;
}
.top-nav-links a { color: var(--muted-foreground); }
.top-nav-links a:hover { color: var(--foreground); text-decoration: none; }

.nav-toggle {
  display: none;
  padding: 6px 11px;
  background: var(--muted);
  color: var(--foreground);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

/* ---------- layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  gap: 48px;
  width: min(1280px, calc(100% - 40px));
  margin: 0 auto;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: var(--nav-height);
  max-height: calc(100vh - var(--nav-height));
  padding: 32px 0 48px;
  overflow-y: auto;
}
.sidebar-group + .sidebar-group { margin-top: 26px; }
.sidebar-title {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.sidebar ul { margin: 0; padding: 0; list-style: none; }
.sidebar li + li { margin-top: 1px; }
.sidebar a {
  display: block;
  padding: 6px 12px;
  border-left: 2px solid transparent;
  color: var(--muted-foreground);
  font-size: 13.5px;
}
.sidebar a:hover { color: var(--foreground); background: var(--card); text-decoration: none; }
.sidebar a[aria-current="page"] {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--card);
  font-weight: 500;
}

.content { min-width: 0; padding: 40px 0 96px; max-width: 900px; }

/* ---------- typography ---------- */
.page-kicker {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
h1 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 40px); line-height: 1.12; letter-spacing: -0.03em; }
h2 {
  margin: 56px 0 14px;
  padding-top: 8px;
  font-size: 23px;
  letter-spacing: -0.02em;
  scroll-margin-top: calc(var(--nav-height) + 20px);
}
h3 { margin: 32px 0 10px; font-size: 17px; letter-spacing: -0.01em; scroll-margin-top: calc(var(--nav-height) + 20px); }
h4 { margin: 24px 0 8px; font-size: 14.5px; letter-spacing: -0.005em; }
p { margin: 0 0 14px; color: var(--muted-foreground); }
.lede { font-size: 17px; color: var(--muted-foreground); margin-bottom: 28px; }
.content > p:last-child { margin-bottom: 0; }

ul.plain, ol.plain { margin: 0 0 16px; padding-left: 22px; color: var(--muted-foreground); }
ul.plain li, ol.plain li { margin-bottom: 8px; }
ul.plain b, ol.plain b { color: var(--foreground); font-weight: 600; }

hr { margin: 48px 0; border: 0; border-top: 1px solid var(--border); }

/* ---------- code ---------- */
.code {
  margin: 0 0 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.code-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted-foreground);
}
.code-head .lang {
  padding: 1px 7px;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 11px;
}
.code pre {
  margin: 0;
  padding: 15px 16px;
  font-size: 12.5px;
  line-height: 1.7;
  overflow-x: auto;
  color: var(--foreground);
}
.tk-kw { color: #c98aff; }
.tk-str { color: #6cf2c0; }
.tk-tag { color: #7ab8ff; }
.tk-attr { color: #ffb454; }
.tk-com { color: var(--muted-foreground); font-style: italic; }
.tk-num { color: #ff9d7a; }
.tk-fn { color: #7ab8ff; }

/* ---------- callouts ---------- */
.note {
  margin: 0 0 18px;
  padding: 13px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 13.5px;
  color: var(--muted-foreground);
}
.note.warn { border-left-color: var(--warn); }
.note.danger { border-left-color: var(--danger); }
.note strong { color: var(--foreground); font-weight: 600; }
.note :last-child { margin-bottom: 0; }

/* ---------- demos ----------
 * A demo is a signal on a bench: the player sits at a fixed, modest width on a
 * faint alignment grid, with a status strip underneath. Nothing here competes
 * with the code block it is paired with.
 */
.demo {
  margin: 0 0 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* A demo immediately followed by its code reads as one unit. */
.demo:has(+ .code) {
  margin-bottom: 0;
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  border-bottom: 0;
}
.demo:has(+ .code) + .code {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

.demo-stage {
  display: grid;
  justify-items: center;
  padding: 26px 22px;
  background-color: hsl(240 12% 2.5%);
  background-image:
    linear-gradient(hsl(240 6% 100% / 0.028) 1px, transparent 1px),
    linear-gradient(90deg, hsl(240 6% 100% / 0.028) 1px, transparent 1px);
  background-size: 26px 26px;
  background-position: center;
}
.demo-stage > * { width: 100%; max-width: 34rem; }
.demo-stage .demo-grid { max-width: 100%; }

.demo-stage.flush { padding: 0; background-image: none; }
.demo-stage.flush > * { max-width: 100%; }

/* Hairline between the signal and the bench it sits on. */
.demo-stage .fideo {
  border-radius: 6px;
  box-shadow: 0 0 0 1px hsl(0 0% 100% / 0.07);
}

.demo-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted-foreground);
}
.demo-foot > span:first-child::before {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 8px;
  vertical-align: middle;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.75;
  content: "";
}
.demo-foot .mono {
  color: var(--foreground);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.demo-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.bg-stage {
  position: relative;
  height: 300px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
/* The background player fills the stage rather than sitting in the grid flow,
   so the copy can be centred over it. */
.bg-stage .fideo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border-radius: 0;
  box-shadow: none;
}
.bg-stage .bg-copy {
  position: relative;
  z-index: 4;
  padding: 0 24px;
  text-align: center;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
}
.bg-stage .bg-copy h3 { margin: 0 0 6px; font-size: 26px; color: #fff; }
.bg-stage .bg-copy p { margin: 0; color: rgba(255, 255, 255, 0.82); }

/* ---------- tables ---------- */
.table-wrap {
  margin: 0 0 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table-head {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--muted-foreground);
}
.scroller { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { padding: 10px 16px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  white-space: nowrap;
}
tbody tr:last-child td { border-bottom: 0; }
td.mono, th.mono { font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace; font-size: 12.5px; }
td .type { color: #7ab8ff; font-size: 12.5px; font-family: ui-monospace, Menlo, monospace; }
td .default { color: var(--accent); font-size: 12.5px; font-family: ui-monospace, Menlo, monospace; }
td small { display: block; margin-top: 3px; color: var(--muted-foreground); font-size: 12px; }

/* ---------- controls ---------- */
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }
button.action {
  padding: 7px 13px;
  background: var(--muted);
  color: var(--foreground);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
button.action:hover { background: var(--card-elevated); border-color: var(--accent); }
button.action:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button.action[disabled] { opacity: 0.45; cursor: not-allowed; }
button.action[disabled]:hover { background: var(--muted); border-color: var(--border-strong); }
button.action[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }

.log {
  margin: 0 0 16px;
  padding: 12px 14px;
  max-height: 180px;
  overflow-y: auto;
  background: hsl(240 10% 2.5%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted-foreground);
}
.log div + div { margin-top: 2px; }
.log .ok { color: var(--accent); }
.log .warn { color: var(--warn); }

.readout {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  margin: 0 0 16px;
}
.readout .cell {
  padding: 10px 12px;
  background: var(--card-elevated);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.readout .cell .k { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted-foreground); }
.readout .cell .v {
  display: block;
  margin-top: 3px;
  font-family: ui-monospace, Menlo, monospace;
  font-size: 14px;
  color: var(--foreground);
}

/* ---------- page footer nav ---------- */
.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-top: 64px;
  padding-top: 26px;
  border-top: 1px solid var(--border);
}
.page-nav a {
  flex: 1 1 0;
  padding: 14px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--foreground);
}
.page-nav a:hover { border-color: var(--accent); text-decoration: none; }
.page-nav a.next { text-align: right; }
.page-nav .dir { display: block; font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted-foreground); }
.page-nav .label { display: block; margin-top: 3px; font-size: 14.5px; }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .layout { grid-template-columns: 1fr; gap: 0; }
  .nav-toggle { display: inline-block; }
  .top-nav-links { display: none; }
  .sidebar {
    position: static;
    max-height: none;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
  }
  .sidebar[hidden] { display: none; }
  .content { padding-top: 28px; }
}