/* Vidi docs — hand-rolled static site. Newsprint palette, fixed sidebar nav.
   No build step; edit and refresh. */

:root {
  --paper: #faf7f2;
  --paper-alt: #f3ede2;
  --ink: #1a1814;
  --ink-dim: #5a554c;
  --rule: #d8d1c4;
  --accent: #7a2f14;
  --accent-bg: rgba(122, 47, 20, 0.08);
  --code-bg: #efeae0;
  --nav-width: 240px;

  --font-serif: 'Iowan Old Style', 'Palatino Linotype', Palatino, Georgia, ui-serif, serif;
  --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', Menlo, 'JetBrains Mono', Consolas, monospace;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14120f;
    --paper-alt: #1b1813;
    --ink: #e8e3d8;
    --ink-dim: #9a9287;
    --rule: #2e2a23;
    --accent: #d67b58;
    --accent-bg: rgba(214, 123, 88, 0.14);
    --code-bg: #1d1a15;

    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 1rem; }

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'onum' 1, 'kern' 1, 'liga' 1;
}

a { color: var(--accent); text-decoration: underline; text-underline-offset: 0.12em; }
a:hover { text-decoration-thickness: 2px; }

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}
pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--code-bg);
  padding: 0.9rem 1rem;
  border-radius: 5px;
  overflow-x: auto;
}
pre code { background: none; padding: 0; font-size: 1em; }

kbd {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78em;
  background: var(--paper-alt);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.05rem 0.38rem;
  line-height: 1.3;
  min-width: 1.6em;
  text-align: center;
}

table {
  border-collapse: collapse;
  margin: 1.25em 0;
  font-size: 0.95em;
}
th, td {
  padding: 0.5em 0.75em;
  text-align: left;
  border-bottom: 1px solid var(--rule);
}
thead th { border-bottom: 2px solid var(--ink); }

/* -- Layout -------------------------------------------------------------- */

.layout {
  display: grid;
  grid-template-columns: var(--nav-width) minmax(0, 1fr);
  min-height: 100vh;
}

.nav {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 1.5rem 1rem 2rem 1.25rem;
  background: var(--paper-alt);
  border-right: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.875rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 1.25rem;
  text-decoration: none;
}
.brand img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}
.brand-name {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.nav h3 {
  margin: 1.25rem 0 0.4rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}
.nav h3:first-of-type { margin-top: 0; }

.nav ul { list-style: none; margin: 0; padding: 0; }
.nav li { margin: 0.05rem 0; }
.nav a {
  display: block;
  padding: 0.2rem 0.5rem;
  color: var(--ink);
  text-decoration: none;
  border-radius: 3px;
  line-height: 1.35;
}
.nav a:hover { background: var(--accent-bg); color: var(--accent); }
.nav .sub a { padding-left: 1.25rem; color: var(--ink-dim); font-size: 0.8125rem; }
.nav .sub a:hover { color: var(--accent); }

main {
  max-width: 76ch;
  padding: 3rem 2rem 6rem;
  margin: 0 auto;
}

section { padding: 1.5rem 0 2rem; border-top: 1px solid var(--rule); }
section:first-of-type { border-top: 0; padding-top: 0; }

h1, h2, h3 { font-family: var(--font-serif); color: var(--ink); line-height: 1.2; }
h1 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.25em;
}
h2 {
  font-size: 1.625rem;
  font-weight: 650;
  margin: 0 0 0.4em;
  padding-bottom: 0.25em;
  border-bottom: 1px solid var(--rule);
}
h3 { font-size: 1.2rem; margin-top: 1.75em; font-weight: 600; }
h4 {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  margin: 1.5em 0 0.5em;
}
p { margin: 0 0 0.9em; }
ul, ol { margin: 0 0 0.9em 1.5em; padding: 0; }
li + li { margin-top: 0.2em; }

.hero {
  padding: 3.25rem 0 2rem;
  border-top: 0;
}
.hero .eyebrow {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin: 0 0 0.4em;
}
.hero h1 { font-size: 3rem; margin-bottom: 0.4em; }
.hero .tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.375rem;
  color: var(--ink-dim);
  margin-bottom: 1.25rem;
  max-width: 42ch;
}

.etymology {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--ink-dim);
  border-left: 2px solid var(--rule);
  padding: 0.25rem 0 0.25rem 0.875rem;
  margin: 0 0 2rem;
  max-width: 60ch;
  line-height: 1.55;
}
.etymology strong {
  color: var(--ink);
  font-family: var(--font-serif);
  font-weight: 700;
}
.etymology .pron {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--ink);
  padding: 0 0.15em;
}
.etymology em {
  font-style: italic;
}

.hero-figure {
  margin: 0.5rem 0 2rem;
}
.hero-figure img {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin: 1.25rem 0 1.5rem;
}
.download-grid .card {
  padding: 0.875rem 1rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-alt);
}
.download-grid .card strong { display: block; margin-bottom: 0.25em; color: var(--ink); font-family: var(--font-ui); font-size: 0.95em; }
.download-grid .card span { color: var(--ink-dim); font-size: 0.85em; }

.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375em;
  padding: 0.55em 1em;
  background: var(--accent);
  color: var(--paper);
  border-radius: 5px;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}
.cta:hover { filter: brightness(1.05); color: var(--paper); text-decoration: none; }

figure {
  margin: 1.5em 0;
  text-align: center;
}
figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 6px;
}
figcaption {
  font-size: 0.85em;
  color: var(--ink-dim);
  margin-top: 0.4em;
  font-style: italic;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.5rem;
  padding: 0;
  list-style: none;
}
.feature-list li {
  padding: 0.9rem 1rem;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper-alt);
}
.feature-list strong { color: var(--ink); display: block; margin-bottom: 0.2em; font-family: var(--font-ui); font-size: 0.95em; }
.feature-list span { color: var(--ink-dim); font-size: 0.9em; }

.shortcut-table td:first-child, .shortcut-table th:first-child { white-space: nowrap; }
.shortcut-table td:first-child kbd { margin-right: 0.15em; }

.callout {
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-bg);
  border-radius: 0 4px 4px 0;
  margin: 1em 0;
  font-size: 0.95em;
}
.callout strong { color: var(--accent); }

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--ink-dim);
  font-size: 0.8125rem;
  font-family: var(--font-ui);
}
footer a { color: inherit; }

@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
  .nav {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding: 1rem 1.25rem;
  }
  main { padding: 1.5rem 1.25rem 4rem; }
}