/* Singreybuilds — Legal documents stylesheet
 * Editorial Swiss minimalism. Light warm ground, EB Garamond display,
 * Lato body, IBM Plex Mono for legal-meta marginalia. Two-column reader
 * layout on desktop, stacked single column on mobile.
 *
 * Design lineage: GOV.UK, Stripe legal, the Economist masthead — typed
 * not styled, hierarchy not gradient.
 */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=IBM+Plex+Mono:wght@400;500&family=Lato:wght@300;400;700&display=swap');

:root {
  /* Palette — warm off-white ground, deep ink, burnt sienna accent.
   * Deliberately not pure white (avoids the corporate AI default), and
   * deliberately not the game's gothic dark — this is the studio surface. */
  --bg: #f6f3ea;
  --bg-card: #fbf8ee;
  --ink: #1a1815;
  --ink-soft: #4d4944;
  --ink-muted: #8a857c;
  --rule: #ddd5be;
  --rule-soft: #ebe4cc;
  --accent: #b04a1f;
  --accent-strong: #8e3812;
  --highlight: #fff4d9;

  /* Type scale — moderate ratio for editorial reading */
  --fs-tiny: 0.7rem;
  --fs-mono: 0.78rem;
  --fs-small: 0.875rem;
  --fs-base: 1.0625rem;
  --fs-md: 1.25rem;
  --fs-lg: 1.5625rem;
  --fs-xl: 2rem;
  --fs-display: clamp(2.4rem, 5.4vw + 1rem, 3.6rem);

  /* Spacing scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;
  --sp-9: 96px;

  --rule-line: 1px solid var(--rule);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Lato', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: var(--fs-base);
  line-height: 1.65;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--ink);
  color: var(--bg);
}

a {
  color: inherit;
}

/* ---------- LAYOUT ----------------------------------------------------- */

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

.skip-link {
  position: absolute;
  left: var(--sp-4);
  top: -48px;
  background: var(--ink);
  color: var(--bg);
  padding: var(--sp-2) var(--sp-4);
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-small);
  text-decoration: none;
  z-index: 50;
}
.skip-link:focus {
  top: var(--sp-3);
}

/* ---------- MASTHEAD --------------------------------------------------- */

.masthead {
  border-bottom: var(--rule-line);
  padding: var(--sp-5) 0;
  margin-bottom: var(--sp-7);
}

.masthead .page {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-5);
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--ink);
  font-family: 'EB Garamond', serif;
  font-weight: 500;
  font-size: var(--fs-md);
  letter-spacing: -0.005em;
}
.brand .mark {
  font-style: italic;
}
.brand .slash {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
  border: 1px solid var(--rule);
  padding: 1px 6px 2px;
  border-radius: 2px;
}

.site-nav {
  display: flex;
  gap: var(--sp-5);
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.site-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}
.site-nav a:hover,
.site-nav a[aria-current='page'] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- INTRO BLOCK ------------------------------------------------ */

.intro {
  margin-bottom: var(--sp-6);
}

.eyebrow {
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin: 0 0 var(--sp-3);
}

h1.display {
  font-family: 'EB Garamond', serif;
  font-weight: 500;
  font-size: var(--fs-display);
  line-height: 1.04;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 0 0 var(--sp-4);
}
h1.display em {
  font-style: italic;
  font-weight: 400;
  color: var(--ink-soft);
}

.lede {
  font-family: 'EB Garamond', serif;
  font-weight: 400;
  font-size: var(--fs-md);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 0 var(--sp-5);
}

/* Meta strip — formal "this document" stamp */
.meta-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--sp-4);
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  border-top: var(--rule-line);
  border-bottom: var(--rule-line);
  padding: var(--sp-4) 0;
}
.meta-bar dt {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
  font-size: var(--fs-tiny);
  margin-bottom: var(--sp-1);
}
.meta-bar dd {
  margin: 0;
  color: var(--ink);
  font-size: var(--fs-small);
}
.meta-bar a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
}
.meta-bar a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- TWO-COLUMN BODY ------------------------------------------- */

.reader {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--sp-7);
  margin-top: var(--sp-7);
}
@media (max-width: 880px) {
  .reader {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
  }
}

/* TOC — sticky aside on desktop, inline strip on mobile */
.toc {
  position: sticky;
  top: var(--sp-5);
  align-self: start;
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  border-left: var(--rule-line);
  padding-left: var(--sp-4);
}
@media (max-width: 880px) {
  .toc {
    position: static;
    border-left: none;
    border-top: var(--rule-line);
    border-bottom: var(--rule-line);
    padding: var(--sp-4) 0;
  }
}
.toc-label {
  display: block;
  font-size: var(--fs-tiny);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--ink-muted);
  margin-bottom: var(--sp-3);
}
.toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: section;
}
.toc li {
  counter-increment: section;
  padding: 3px 0;
  display: flex;
  gap: var(--sp-3);
  align-items: baseline;
}
.toc li::before {
  content: counter(section, decimal-leading-zero);
  flex-shrink: 0;
  color: var(--ink-muted);
  font-size: var(--fs-tiny);
  letter-spacing: 0.05em;
  width: 1.6em;
}
.toc a {
  text-decoration: none;
  color: var(--ink-soft);
  line-height: 1.45;
  transition: color 180ms ease;
}
.toc a:hover {
  color: var(--accent);
}

/* CONTENT — main reading column */
.content {
  min-width: 0;
}

.content h2 {
  font-family: 'EB Garamond', serif;
  font-weight: 500;
  font-size: var(--fs-xl);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: var(--sp-7) 0 var(--sp-3);
  padding-top: var(--sp-5);
  border-top: var(--rule-line);
  display: flex;
  align-items: baseline;
  gap: var(--sp-4);
}
.content h2:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}
.content h2 .num {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 400;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  flex-shrink: 0;
  padding-top: 0.25em;
}

.content p,
.content ul,
.content ol {
  max-width: 64ch;
  margin: 0 0 var(--sp-4);
}
.content ul,
.content ol {
  padding-left: var(--sp-5);
}
.content li {
  margin: var(--sp-2) 0;
}
.content a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: color 180ms ease, background 180ms ease;
}
.content a:hover {
  color: var(--accent);
  background: var(--highlight);
}
.content code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.92em;
  background: var(--highlight);
  border: 1px solid var(--rule-soft);
  padding: 0.05em 0.4em;
  border-radius: 2px;
}
.content em {
  font-style: italic;
}
.content strong {
  font-weight: 700;
}

/* Lang switch above title */
.lang-switch {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  color: var(--ink-muted);
  margin: 0 0 var(--sp-5);
  letter-spacing: 0.04em;
}
.lang-switch a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
}
.lang-switch a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- INDEX-PAGE BLOCKS ----------------------------------------- */

.docs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin: var(--sp-6) 0 var(--sp-7);
  border-top: var(--rule-line);
  border-bottom: var(--rule-line);
}
@media (max-width: 720px) {
  .docs-grid {
    grid-template-columns: 1fr;
  }
}

.doc-card {
  display: flex;
  flex-direction: column;
  padding: var(--sp-6) var(--sp-5);
  border-right: var(--rule-line);
  background: transparent;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: background 180ms ease;
}
.doc-card:last-child {
  border-right: none;
}
@media (max-width: 720px) {
  .doc-card {
    border-right: none;
    border-bottom: var(--rule-line);
  }
  .doc-card:last-child {
    border-bottom: none;
  }
}
.doc-card:hover {
  background: var(--bg-card);
}

.doc-card .card-num {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-tiny);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: var(--sp-3);
}
.doc-card h3 {
  font-family: 'EB Garamond', serif;
  font-weight: 500;
  font-size: var(--fs-lg);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 var(--sp-3);
}
.doc-card .card-desc {
  font-size: var(--fs-small);
  color: var(--ink-soft);
  line-height: 1.55;
  margin: 0 0 var(--sp-4);
  max-width: 36ch;
}
.doc-card .langs {
  display: flex;
  gap: var(--sp-3);
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  margin-top: auto;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--rule-soft);
  flex-wrap: wrap;
}
.doc-card .lang-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
  padding-bottom: 1px;
  transition: background 180ms ease;
}
.doc-card .lang-link:hover {
  background: var(--highlight);
}

.section-hed {
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
  margin: var(--sp-7) 0 var(--sp-3);
  padding-top: var(--sp-4);
  border-top: var(--rule-line);
}

.contact-block {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--sp-5);
  flex-wrap: wrap;
  padding: var(--sp-5) 0 var(--sp-7);
}
.contact-block .row {
  max-width: 38ch;
}
.contact-block h3 {
  font-family: 'EB Garamond', serif;
  font-weight: 500;
  font-size: var(--fs-lg);
  margin: 0 0 var(--sp-2);
}
.contact-block p {
  margin: 0;
  font-size: var(--fs-small);
  color: var(--ink-soft);
}
.contact-block .email {
  display: inline-block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-small);
  color: var(--ink);
  text-decoration: none;
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid var(--ink);
  background: transparent;
  letter-spacing: 0.02em;
  transition: background 180ms ease, color 180ms ease;
}
.contact-block .email:hover {
  background: var(--ink);
  color: var(--bg);
}

/* ---------- COLOPHON / FOOTER ---------------------------------------- */

.colophon {
  border-top: var(--rule-line);
  margin-top: var(--sp-9);
  padding: var(--sp-5) 0 var(--sp-7);
  font-family: 'IBM Plex Mono', monospace;
  font-size: var(--fs-mono);
  color: var(--ink-muted);
}
.colophon .page {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5) var(--sp-7);
  align-items: baseline;
}
.colophon .colophon-meta {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.colophon a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.colophon a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.colophon .back {
  margin-left: auto;
}

/* ---------- ACCESSIBILITY UTILITIES ---------------------------------- */

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

/* ---------- PRINT ----------------------------------------------------- */

@media print {
  body {
    background: white;
    color: black;
    font-size: 11pt;
  }
  .masthead .site-nav,
  .toc,
  .lang-switch,
  .colophon,
  .skip-link {
    display: none;
  }
  .reader {
    display: block;
  }
  .meta-bar {
    border-color: black;
  }
  a {
    color: black;
    border-bottom: none;
  }
  .content h2 {
    page-break-after: avoid;
  }
}