/* SPDX-License-Identifier: AGPL-3.0-only
   The mimux.dev "correspondence" shell: warm paper, warm ink, one vermilion
   accent, an airmail stripe across the top. Fonts are copied into ./fonts/ by
   scripts/docs.sh from www/src/fonts — nothing here is loaded off a network. */

@font-face {
  font-family: "Inter";
  src: url("./fonts/inter-var.woff2") format("woff2");
  font-weight: 100 900;
  font-display: optional;
}
@font-face {
  font-family: "Bricolage Grotesque";
  src: url("./fonts/bricolage-var.woff2") format("woff2");
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("./fonts/jbm-400.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

:root {
  --paper: oklch(96.5% 0.012 85);
  --paper-2: oklch(93% 0.018 83);
  --card: oklch(98.8% 0.006 90);
  --ink: oklch(25% 0.02 50);
  --ink-mid: oklch(41% 0.018 50);
  --ink-soft: oklch(49% 0.016 50);
  --accent: oklch(52% 0.19 31);
  --accent-bright: oklch(58% 0.19 32);
  --post: oklch(48% 0.11 262);
  --rule: oklch(25% 0.02 50 / 0.15);
  --display: "Bricolage Grotesque", "Inter", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

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

html { -webkit-text-size-adjust: 100%; }
html, body { margin: 0; padding: 0; background: var(--paper); }
body {
  font-family: "Inter", ui-sans-serif, system-ui, sans-serif;
  color: var(--ink);
  line-height: 1.65;
  overflow-wrap: break-word;
}

/* The envelope edge. */
body::before {
  content: "";
  display: block;
  height: 7px;
  background: repeating-linear-gradient(-45deg,
    var(--accent-bright) 0 14px,
    var(--paper) 14px 26px,
    var(--post) 26px 40px,
    var(--paper) 40px 52px);
}

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 60;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
}

/* --- masthead ------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--rule);
  background: oklch(96.5% 0.012 85 / 0.92);
  backdrop-filter: blur(8px);
}
.site-header nav {
  max-width: 82rem;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
}
.brand img { border-radius: 6px; }
.brand span {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-size: 1.125rem;
}
.brand small {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  border: 1px solid oklch(58% 0.19 32 / 0.5);
  border-radius: 4px;
  padding: 0.2rem 0.45rem;
  rotate: -2deg;
}
.site-header ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
  font-weight: 500;
}
.site-header ul a {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color 150ms ease;
}
.site-header ul a:hover { color: var(--ink); }
.site-header ul a.cta {
  color: var(--paper);
  background: var(--ink);
  box-shadow: 2px 2px 0 oklch(25% 0.02 50 / 0.22);
  margin-left: 0.35rem;
}
.site-header ul a.cta:hover { background: var(--accent); }
@media (max-width: 640px) {
  .site-header ul a { padding: 0.5rem 0.5rem; }
  .site-header ul .hide-sm { display: none; }
}

/* --- page frame ---------------------------------------------------------- */

.layout {
  max-width: 82rem;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: 2.5rem;
  align-items: start;
}
.content { min-width: 0; }

.sidebar {
  position: sticky;
  top: 5rem;
  padding: 2rem 0 3rem;
  font-size: 0.9rem;
  max-height: calc(100vh - 6rem);
  overflow-y: auto;
}
.sidebar .nav-group {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  margin: 1.5rem 0 0.5rem;
}
.sidebar .nav-group:first-child { margin-top: 0; }
.sidebar ul {
  list-style: none;
  margin: 0 0 0.25rem;
  padding: 0;
  border-left: 1px solid var(--rule);
}
.sidebar li { margin: 0; }
.sidebar a {
  display: block;
  padding: 0.3rem 0.75rem;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--ink-mid);
  text-decoration: none;
}
.sidebar a:hover { color: var(--ink); background: oklch(25% 0.02 50 / 0.04); }
.sidebar a.here {
  color: var(--accent);
  font-weight: 600;
  border-left-color: var(--accent);
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  .sidebar {
    position: static;
    max-height: none;
    padding: 1rem 0 0;
    border-bottom: 1px solid var(--rule);
    display: flex;
    gap: 1.25rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
  }
  .sidebar .nav-group { display: none; }
  .sidebar ul {
    display: flex;
    gap: 0.25rem;
    border-left: 0;
    margin: 0;
  }
  .sidebar a {
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: 0.35rem 0.6rem;
  }
  .sidebar a.here { border-left: 0; border-bottom-color: var(--accent); }
}

/* --- prose --------------------------------------------------------------- */

.prose {
  max-width: 48rem;
  padding: 2.5rem 0 4rem;
}
.prose > *:first-child { margin-top: 0; }

.prose h1 {
  font-family: var(--display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 0.75rem;
}
.prose h2 {
  font-family: var(--display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin: 3rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}
.prose h3 {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 2rem 0 0.5rem;
}
.prose h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin: 1.5rem 0 0.35rem;
}
.prose .lede {
  font-size: 1.15rem;
  color: var(--ink-mid);
  margin: 0 0 2rem;
}
.prose p, .prose ul, .prose ol { margin: 0 0 1rem; }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li { margin: 0.3rem 0; }
.prose li > ul, .prose li > ol { margin: 0.3rem 0; }

.prose a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
.prose a:hover { color: var(--ink); }

.prose strong { font-weight: 650; }

/* Ligatures off everywhere we show code: JetBrains Mono turns `--` and `<-`
   into single narrower glyphs, which breaks the column grid an ASCII diagram
   depends on. */
.prose code, .prose pre { font-variant-ligatures: none; }

.prose code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: oklch(25% 0.02 50 / 0.06);
  border-radius: 4px;
  padding: 0.1em 0.35em;
}
.prose pre {
  font-family: var(--mono);
  font-size: 0.8125rem;
  line-height: 1.6;
  background: var(--ink);
  color: oklch(93% 0.012 85);
  padding: 1rem 1.1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 0 0 1.25rem;
  box-shadow: 3px 3px 0 oklch(25% 0.02 50 / 0.18);
}
.prose pre code {
  background: none;
  padding: 0;
  font-size: inherit;
  color: inherit;
}
.prose pre.diagram {
  background: var(--card);
  color: var(--ink-mid);
  border: 1px solid var(--rule);
  box-shadow: none;
  font-size: 0.75rem;
}

.prose blockquote {
  margin: 0 0 1.25rem;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--card);
  color: var(--ink-mid);
}
.prose blockquote p:last-child { margin-bottom: 0; }

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1.25rem;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: var(--card);
}
.prose table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.875rem;
}
.prose th, .prose td {
  text-align: left;
  vertical-align: top;
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--rule);
}
.prose th {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  white-space: nowrap;
}
.prose tbody tr:last-child td { border-bottom: 0; }
.prose td code { white-space: nowrap; }

/* A card grid, used on the overview page. */
.cards {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.85rem;
}
.cards li { margin: 0; }
.cards a {
  display: block;
  height: 100%;
  padding: 1rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 150ms ease, transform 150ms ease;
}
.cards a:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  color: var(--ink);
}
.cards strong {
  display: block;
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.2rem;
}
.cards span {
  display: block;
  font-size: 0.875rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* A stamped label for "pro only" sections. */
.pro-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  border: 1px solid oklch(58% 0.19 32 / 0.5);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  vertical-align: middle;
  rotate: -2deg;
  margin-left: 0.4rem;
}

.note {
  margin: 0 0 1.25rem;
  padding: 0.85rem 1rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--post);
  border-radius: 0 8px 8px 0;
  font-size: 0.925rem;
  color: var(--ink-mid);
}
.note p:last-child { margin-bottom: 0; }
.note strong { color: var(--ink); }

/* --- footer -------------------------------------------------------------- */

.site-footer {
  max-width: 48rem;
  margin: 0;
  padding: 1.5rem 0 3rem;
  border-top: 1px solid var(--rule);
  font-size: 0.8125rem;
  color: var(--ink-soft);
}
.site-footer p { margin: 0 0 0.4rem; }
.site-footer a { color: var(--ink-mid); }
.site-footer code { font-family: var(--mono); font-size: 0.9em; }

/* --- Scalar, dressed in the house palette -------------------------------- */

.scalar-app {
  --scalar-font: "Inter", ui-sans-serif, system-ui, sans-serif;
  --scalar-font-code: var(--mono);
  --scalar-color-accent: var(--accent);
  --scalar-background-1: var(--paper);
  --scalar-background-2: var(--paper-2);
  --scalar-background-3: var(--card);
  --scalar-background-accent: oklch(58% 0.19 32 / 0.08);
  --scalar-color-1: var(--ink);
  --scalar-color-2: var(--ink-mid);
  --scalar-color-3: var(--ink-soft);
  --scalar-border-color: var(--rule);
}