/* ============================================================================
 * Gesso Lite docs — shared styles
 * Mirrors the application's aesthetic: black/white/hairline minimal, with
 * accent orange (#c25410) and a small set of utility classes.
 * ========================================================================= */

:root {
  --gl-ink: #0a0a0a;
  --gl-paper: #ffffff;
  --gl-mute: #6b6b6b;
  --gl-soft: #f4f4f2;
  --gl-line: #1a1a1a;
  --gl-hairline: rgba(10, 10, 10, 0.12);
  --gl-accent: #c25410;
  --gl-accent-soft: #fdf1e6;
  color-scheme: light;
}

[data-theme="dark"] {
  --gl-ink: #f0f0ee;
  --gl-paper: #0a0a0a;
  --gl-mute: #888783;
  --gl-soft: #181816;
  --gl-line: #f0f0ee;
  --gl-hairline: rgba(240, 240, 238, 0.16);
  --gl-accent: #d97a40;
  --gl-accent-soft: #2a1c10;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--gl-paper);
  color: var(--gl-ink);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--gl-hairline);
  padding-bottom: 1px;
  transition: border-color 120ms ease;
}
a:hover {
  border-bottom-color: var(--gl-ink);
}

a.gl-accent-link {
  color: var(--gl-accent);
  border-bottom-color: rgba(194, 84, 16, 0.3);
}
a.gl-accent-link:hover {
  border-bottom-color: var(--gl-accent);
}

.gl-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 64px 32px;
}

.gl-eyebrow {
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gl-mute);
  font-weight: 500;
  margin: 0 0 12px;
}

.gl-title {
  font-size: 56px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0 0 12px;
}

.gl-tagline {
  font-size: 22px;
  color: var(--gl-mute);
  font-weight: 400;
  margin: 0 0 32px;
  letter-spacing: -0.005em;
}

.gl-h1 {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 0 0 8px;
}

.gl-h2 {
  font-size: 22px;
  font-weight: 500;
  margin: 56px 0 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--gl-line);
  letter-spacing: -0.01em;
}

.gl-h3 {
  font-size: 17px;
  font-weight: 500;
  margin: 32px 0 8px;
  letter-spacing: -0.005em;
}

.gl-lede {
  font-size: 17px;
  line-height: 1.7;
  color: var(--gl-ink);
  margin: 0 0 24px;
}

.gl-prose p {
  margin: 0 0 16px;
}

.gl-prose ul, .gl-prose ol {
  margin: 0 0 16px;
  padding-left: 24px;
}
.gl-prose li {
  margin: 0 0 6px;
}

.gl-prose code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--gl-soft);
  padding: 1px 6px;
  border-radius: 2px;
}

.gl-prose pre {
  background: var(--gl-soft);
  padding: 16px 18px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
  border-left: 2px solid var(--gl-hairline);
  margin: 16px 0 24px;
}
.gl-prose pre code {
  background: transparent;
  padding: 0;
  font-size: inherit;
}

.gl-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 32px 0 56px;
}

.gl-btn {
  display: inline-block;
  padding: 12px 18px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--gl-line);
  background: transparent;
  color: var(--gl-ink);
  text-decoration: none;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
.gl-btn:hover {
  background: var(--gl-ink);
  color: var(--gl-paper);
  border-color: var(--gl-ink);
}

.gl-btn-accent {
  background: var(--gl-accent);
  color: var(--gl-paper);
  border-color: var(--gl-accent);
}
.gl-btn-accent:hover {
  background: transparent;
  color: var(--gl-accent);
}

.gl-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin: 24px 0;
}

.gl-feature {
  padding: 0;
}
.gl-feature-title {
  font-size: 15px;
  font-weight: 500;
  margin: 0 0 6px;
}
.gl-feature-body {
  font-size: 14px;
  color: var(--gl-mute);
  line-height: 1.6;
  margin: 0;
}

.gl-roles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin: 24px 0;
}
.gl-role h3 {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 12px;
  color: var(--gl-mute);
}
.gl-role ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.gl-role li {
  font-size: 14px;
  margin: 0 0 6px;
  padding: 6px 0;
  border-bottom: 0.5px solid var(--gl-hairline);
}

.gl-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px 32px;
  margin: 24px 0;
}
.gl-stack-item {
  padding: 0;
}
.gl-stack-name {
  font-size: 13px;
  font-weight: 500;
  margin: 0 0 2px;
}
.gl-stack-detail {
  font-size: 12px;
  color: var(--gl-mute);
  margin: 0;
}

.gl-footer {
  margin-top: 96px;
  padding-top: 32px;
  border-top: 1px solid var(--gl-hairline);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--gl-mute);
}
.gl-footer-tagline {
  font-style: italic;
  font-size: 13px;
  color: var(--gl-ink);
}

.gl-theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  background: transparent;
  border: 0.5px solid var(--gl-hairline);
  padding: 6px 12px;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gl-mute);
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  transition: border-color 120ms ease;
}
.gl-theme-toggle:hover {
  border-color: var(--gl-ink);
}

.gl-back {
  display: inline-block;
  font-size: 12px;
  color: var(--gl-mute);
  margin-bottom: 24px;
  letter-spacing: 0.04em;
  border-bottom-color: transparent;
}
.gl-back:hover {
  border-bottom-color: var(--gl-mute);
}

.gl-callout {
  background: var(--gl-accent-soft);
  border-left: 2px solid var(--gl-accent);
  padding: 14px 16px;
  margin: 16px 0 24px;
  font-size: 14px;
  line-height: 1.6;
}

@media (max-width: 600px) {
  .gl-shell { padding: 40px 20px; }
  .gl-title { font-size: 38px; }
  .gl-tagline { font-size: 18px; }
  .gl-h1 { font-size: 26px; }
  .gl-h2 { font-size: 19px; }
  .gl-grid-2,
  .gl-roles,
  .gl-stack {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .gl-theme-toggle {
    top: 16px;
    right: 16px;
  }
}