/* ==========================================================================
   Quartermaster — shared stylesheet
   Tokens taken from the original index.html so every page matches.
   ========================================================================== */

:root {
  --bg:          #050505;
  --grid:        rgba(255, 255, 255, 0.03);
  --text:        #E5E7EB;
  --text-muted:  #9CA3AF;
  --text-dim:    #6B7280;
  --white:       #FFFFFF;
  --green:       #34D399;
  --green-bg:    rgba(16, 185, 129, 0.10);
  --green-br:    rgba(16, 185, 129, 0.20);
  --blue:        #60A5FA;
  --red:         #EF4444;
  --rule:        rgba(255, 255, 255, 0.08);
  --panel:       rgba(255, 255, 255, 0.02);

  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  --wrap: 1100px;   /* nav, footer, wide layouts */
  --prose: 720px;   /* reading width */
}

/* --------------------------------------------------------------- base --- */

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 30px 30px;
  color: var(--text);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

main { flex: 1 0 auto; }

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Keyboard users must always be able to see where they are. */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--text);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { left: 0; }

.wrap  { max-width: var(--wrap);  margin: 0 auto; padding: 0 24px; }
.prose { max-width: var(--prose); margin: 0 auto; padding: 0 24px; }

.mono-accent { font-family: var(--mono); color: var(--blue); font-weight: 400; }

/* ---------------------------------------------------------------- nav --- */

.site-nav {
  border-bottom: 1px solid var(--rule);
  background: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 68px;
}

.nav-brand {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.4px;
}
.nav-brand:hover { text-decoration: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--text-muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--white); text-decoration: none; }
.nav-links a[aria-current="page"] { color: var(--white); }

/* ------------------------------------------------------------ buttons --- */

.cta-button {
  display: inline-block;
  padding: 14px 28px;
  background-color: var(--text);
  color: var(--bg);
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.2s, transform 0.1s;
}
.cta-button:hover { background-color: var(--white); text-decoration: none; }
.cta-button:active { transform: scale(0.98); }

.cta-button.small { padding: 9px 18px; font-size: 0.9rem; }

.ghost-button {
  display: inline-block;
  padding: 13px 27px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  color: var(--text);
  font-weight: 500;
  font-size: 1rem;
  transition: border-color 0.2s, background-color 0.2s;
}
.ghost-button:hover {
  border-color: var(--text-dim);
  background: var(--panel);
  text-decoration: none;
}

/* --------------------------------------------------------------- home --- */

.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: calc(100vh - 68px - 180px);
  padding: 80px 20px;
}

.hero .container { max-width: 700px; }

.status-badge {
  display: inline-flex;
  align-items: center;
  background-color: var(--green-bg);
  border: 1px solid var(--green-br);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--green);
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.dot {
  width: 8px;
  height: 8px;
  background-color: var(--green);
  border-radius: 50%;
  margin-right: 10px;
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%   { opacity: 1; }
  50%  { opacity: 0.3; }
  100% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .dot { animation: none; }
  html { scroll-behavior: auto; }
}

.hero h1 {
  font-size: 3.5rem;
  margin: 0 0 16px 0;
  letter-spacing: -1.5px;
  font-weight: 600;
  color: var(--white);
}

p.description {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.features {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 48px;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-dim);
}
.features span::before {
  content: '>';
  color: var(--green);
  margin-right: 6px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --------------------------------------------------------- page header --- */

.page-header {
  padding: 72px 0 40px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 48px;
}

.page-header h1 {
  font-size: 2.6rem;
  font-weight: 600;
  letter-spacing: -1px;
  color: var(--white);
  margin: 0 0 12px;
}

.page-header .lede {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--green);
  margin: 0 0 14px;
}
.eyebrow::before { content: '> '; }

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

.content { padding-bottom: 96px; }

.content h2 {
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.4px;
  margin: 56px 0 18px;
  scroll-margin-top: 90px;
}

.content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 36px 0 12px;
  scroll-margin-top: 90px;
}

.content p,
.content li {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.content p { margin: 0 0 18px; }

.content strong { color: var(--text); font-weight: 600; }

.content ul, .content ol { padding-left: 22px; margin: 0 0 20px; }
.content li { margin-bottom: 10px; }

.content hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 56px 0;
}

code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--text);
}

pre {
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.6;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 18px 20px;
  overflow-x: auto;
  color: var(--text);
}
pre code { background: none; border: 0; padding: 0; }

blockquote {
  margin: 0 0 24px;
  padding: 16px 20px;
  border-left: 2px solid var(--green);
  background: var(--panel);
  border-radius: 0 8px 8px 0;
}
blockquote p:last-child { margin-bottom: 0; }

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

.table-scroll { overflow-x: auto; margin: 0 0 24px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 480px;
}

th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  color: var(--text);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.3px;
  border-bottom-color: var(--text-dim);
}

td { color: var(--text-muted); line-height: 1.6; }

.tag-stop { color: var(--red); font-family: var(--mono); font-size: 0.85rem; }
.tag-warn { color: var(--green); font-family: var(--mono); font-size: 0.85rem; }

/* --------------------------------------------------------------- card --- */

.card {
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 24px 26px;
  background: var(--panel);
  margin: 0 0 20px;
}
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }

.link-list { list-style: none; padding: 0; margin: 0; }
.link-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  margin: 0;
}
.link-list li:last-child { border-bottom: 0; }
.link-list .label {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-dim);
  min-width: 90px;
  flex-shrink: 0;
}

.meta-line {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  margin: 0 0 40px;
}

/* --------------------------------------------------------- docs layout --- */

.docs-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

/* Grid children default to min-width:auto, which lets a wide <pre> or table
   stretch the whole track and push the page sideways on a phone. */
.docs-layout > * { min-width: 0; }

.toc {
  position: sticky;
  top: 92px;
  font-size: 0.9rem;
  border-left: 1px solid var(--rule);
  padding-left: 18px;
}

.toc p {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 0 0 14px;
}

.toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
.toc li { margin-bottom: 9px; }
.toc a { color: var(--text-muted); }
.toc a:hover { color: var(--white); text-decoration: none; }

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

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 36px 0 48px;
  flex-shrink: 0;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.footer-links {
  display: flex;
  gap: 22px;
  font-size: 0.9rem;
  flex-wrap: wrap;
}
.footer-links a { color: var(--text-muted); }
.footer-links a:hover { color: var(--white); text-decoration: none; }

.footer-brand {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-dim);
}

.disclaimer {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-dim);
  margin: 0;
  max-width: 760px;
}

/* --------------------------------------------------------------- math --- */

.katex { font-size: 1.04em; }
.katex-display {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 8px 0 12px;
  margin: 0 0 20px;
}

/* --------------------------------------------------------- responsive --- */

@media (max-width: 860px) {
  .docs-layout { grid-template-columns: 1fr; gap: 32px; }
  .toc {
    position: static;
    border-left: 0;
    border-bottom: 1px solid var(--rule);
    padding: 0 0 24px;
  }
  .toc ol { columns: 2; column-gap: 24px; }
}

@media (max-width: 680px) {
  .site-nav .wrap { height: auto; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
  .nav-links { gap: 18px; font-size: 0.9rem; width: 100%; }
  .hero h1 { font-size: 2.4rem; letter-spacing: -1px; }
  .page-header { padding-top: 48px; }
  .page-header h1 { font-size: 2rem; }
  p.description { font-size: 1.05rem; }
  .features { gap: 14px; font-size: 0.82rem; }
  .link-list li { flex-direction: column; gap: 4px; }
  .toc ol { columns: 1; }
}