/* =========================================================
   starkOS — shared stylesheet
   Terminal-boot-screen inspired, warm dark theme.
   No external fonts, no build step — pure static CSS.
   ========================================================= */

:root {
  --bg: #0c0d0f;
  --bg-panel: #131519;
  --bg-panel-hover: #181b20;
  --border: #24272d;
  --border-soft: #1b1e23;

  --text: #ece6d9;
  --text-muted: #8b8579;
  --text-faint: #55524a;

  --accent: #d3a24e;
  --accent-dim: #a8813d;
  --accent-wash: rgba(211, 162, 78, 0.1);

  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", "Fira Mono", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Roboto, Helvetica, Arial, sans-serif;

  --maxw: 960px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Faint scanline / vignette texture on the body, kept very subtle */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at top, rgba(211, 162, 78, 0.05), transparent 55%);
  z-index: 0;
}

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

a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

h1, h2, h3 {
  font-family: var(--sans);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 0 0 0.5em;
}

h1 {
  font-size: 2.1rem;
}

p {
  color: var(--text);
  max-width: 90ch;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ---------- Nav ---------- */

.site-nav {
  border-bottom: 1px solid var(--border-soft);
  background: rgba(12, 13, 15, 0.9);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-family: var(--mono);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
  border-color: var(--border);
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
  border-color: var(--accent-dim);
}

.nav-links li.lang-switch {
  margin-left: 8px;
  padding-left: 20px;
  border-left: 1px solid var(--border);
}

.nav-links li.lang-switch a {
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
}

.nav-links li.lang-switch a:hover {
  color: var(--accent);
  border-color: var(--accent-dim);
  text-decoration: none;
}

/* ---------- Page header / terminal prompt eyebrow ---------- */

.page-head {
  padding: 64px 0 20px;
}

.prompt {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 14px;
}

.prompt .cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--accent);
  margin-left: 4px;
  animation: blink 1.1s steps(1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .prompt .cursor {
    animation: none;
  }
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.page-head .lede {
  color: var(--text-muted);
  margin-top: 8px;
}

/* ---------- Downloads table ---------- */

.table-wrap {
  border: 1px solid var(--border);
  background: var(--bg-panel);
  margin-bottom: 20px;
  overflow-x: auto;
}

table.downloads {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

table.downloads thead th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 600;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

table.downloads tbody td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.95rem;
  vertical-align: middle;
}

table.downloads tbody tr:last-child td {
  border-bottom: none;
}

table.downloads tbody tr:hover {
  background: var(--bg-panel-hover);
}

table.downloads tbody tr.is-pending {
  color: var(--text-faint);
}

table.downloads tbody tr.is-pending td {
  color: var(--text-faint);
}

.version-tag {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 2px 8px;
  display: inline-block;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 8px 14px;
  background: transparent;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn:hover {
  background: var(--accent);
  color: #14110a;
  text-decoration: none;
}

.pending-label {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.note {
  font-size: 0.9rem;
  color: var(--text-muted);
  border-left: 2px solid var(--border);
  padding-left: 14px;
  max-width: 80ch;
}

/* ---------- Wiki layout ---------- */

.wiki-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 40px;
  padding-bottom: 80px;
  align-items: start;
}

.wiki-nav {
  border: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 8px;
  position: sticky;
  top: 88px;
}

.wiki-nav-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 10px 12px 6px;
}

.wiki-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.wiki-nav li a,
.wiki-nav li.disabled {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
  border-left: 2px solid transparent;
}

.wiki-nav li a:hover {
  color: var(--text);
  background: var(--bg-panel-hover);
  text-decoration: none;
}

.wiki-nav li a[aria-current="page"] {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-wash);
}

.wiki-nav li.disabled {
  color: var(--text-faint);
  cursor: default;
}

.wiki-nav li.disabled .soon {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  border: 1px solid var(--border);
  padding: 1px 6px;
  white-space: nowrap;
}

.wiki-main h1 {
  margin-bottom: 0.4em;
}

.wiki-main .lede {
  color: var(--text-muted);
  margin-bottom: 32px;
}

.start-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.start-links li {
  border: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 20px;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.start-links li:hover {
  background: var(--bg-panel-hover);
  border-color: var(--accent-dim);
}

.start-links a {
  display: block;
  color: var(--text);
  font-weight: 600;
}

.start-links a:hover {
  text-decoration: none;
  color: var(--accent);
}

.start-links p {
  margin: 6px 0 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ---------- Hero ---------- */

.hero {
  padding: 96px 0 72px;
}

.hero h1 {
  font-size: 2.6rem;
  max-width: 16ch;
}

.hero .lede {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
}

.hero-actions .btn.filled {
  background: var(--accent);
  color: #14110a;
}

.hero-actions .btn.filled:hover {
  background: var(--accent-dim);
  color: #14110a;
}

/* ---------- Card grid (index preview sections) ---------- */

.section-label {
  font-family: var(--mono);
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin: 0 0 64px;
}

.card {
  display: block;
  border: 1px solid var(--border);
  background: var(--bg-panel);
  padding: 24px;
  color: var(--text);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  background: var(--bg-panel-hover);
  border-color: var(--accent-dim);
  text-decoration: none;
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: var(--text);
}

.card:hover h3 {
  color: var(--accent);
}

.card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  max-width: none;
}

/* ---------- Numbered lists (principles / install steps) ---------- */

.numbered-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.numbered-list > li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--border-soft);
}

.numbered-list > li:last-child {
  border-bottom: none;
}

.list-num {
  font-family: var(--mono);
  font-size: 1.3rem;
  color: var(--accent);
  line-height: 1.4;
}

.numbered-list h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.numbered-list p {
  color: var(--text-muted);
  margin: 0;
  max-width: 80ch;
}

.numbered-list pre {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 16px 18px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.7;
  margin: 14px 0 0;
}

.numbered-list pre .sh {
  color: var(--accent);
}

/* ---------- Generic data table (reused by requirements table) ---------- */

table.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 480px;
}

table.data-table thead th {
  text-align: left;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 600;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

table.data-table tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.92rem;
}

table.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 28px 0;
  margin-top: 40px;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer p {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  margin: 0;
}

.site-footer a {
  color: var(--text-faint);
}

.site-footer a:hover {
  color: var(--accent);
}

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  .site-nav .container {
    height: auto;
    flex-direction: column;
    align-items: flex-start;
    padding-top: 16px;
    padding-bottom: 16px;
    gap: 12px;
  }

  .nav-links {
    gap: 18px;
    flex-wrap: wrap;
  }

  .page-head {
    padding: 40px 0 28px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .wiki-layout {
    grid-template-columns: 1fr;
  }

  .wiki-nav {
    position: static;
  }

  .start-links {
    grid-template-columns: 1fr;
  }

  table.downloads {
    min-width: 480px;
  }

  .hero {
    padding: 56px 0 48px;
  }

  .hero h1 {
    font-size: 2rem;
    max-width: none;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .numbered-list > li {
    grid-template-columns: 36px 1fr;
  }
}