/* ==========================================================================
   Dominium — editorial ledger theme (Direction B)
   Reference lock: Midday (achromatic ledger) + Brex (precision, single accent)
   Preserve: true-white canvas, ink text, hairline borders, serif headings,
   0px cards, no shadows, single petrol accent, generous rhythm.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:opsz,wght@8..60,400;8..60,500;8..60,600&family=Inter:wght@400;500;600&display=swap');

:root {
  /* Surfaces */
  --dom-canvas:    #ffffff;
  --dom-band:      #f6f6f7;   /* cool near-white section band (not cream) */
  --dom-ink:       #121212;
  --dom-ink-soft:  #3a3a3c;
  --dom-muted:     #64655f;
  --dom-hairline:  #e0dfdb;
  --dom-hairline-strong: #cfceca;
  --dom-graphite:  #18181b;   /* primary action */
  --dom-accent:    #12665c;   /* petrol — links, active, key figures ONLY */
  --dom-accent-ink:#0e4f47;

  --dom-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --dom-sans:  "Inter", system-ui, -apple-system, sans-serif;

  --dom-maxw: 1160px;
}

/* ---- Map onto Material's token system (light only) ----------------------
   Note: theme palette primary=white keeps the header/tabs light with dark
   text. We deliberately do NOT override --md-primary-fg-color here, or the
   header background would go dark. Buttons/accents are styled explicitly. */
[data-md-color-scheme="default"] {
  --md-accent-fg-color:         var(--dom-accent);
  --md-accent-fg-color--transparent: rgba(18,102,92,.1);

  --md-default-bg-color:        var(--dom-canvas);
  --md-default-fg-color:        var(--dom-ink);
  --md-default-fg-color--light: var(--dom-muted);
  --md-default-fg-color--lighter: #9a9a94;

  --md-typeset-color:           var(--dom-ink);
  --md-typeset-a-color:         var(--dom-accent);
}

/* ---- Base typography ---------------------------------------------------- */
body, .md-typeset {
  font-family: var(--dom-sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.md-typeset {
  font-size: .78rem;
  line-height: 1.72;
  color: var(--dom-ink-soft);
}
.md-typeset p { max-width: 74ch; }

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  font-family: var(--dom-serif);
  color: var(--dom-ink);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
.md-typeset h1 {
  font-size: 2.15rem;
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 .9rem;
}
.md-typeset h2 {
  font-size: 1.5rem;
  line-height: 1.2;
  margin: 3rem 0 1rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--dom-hairline);
}
.md-typeset h3 { font-size: 1.12rem; margin: 1.8rem 0 .6rem; }
.md-typeset h1 + p, .md-typeset h2 + p { margin-top: .2rem; }

.md-typeset a { font-weight: 500; text-underline-offset: 2px; }
.md-typeset a:hover { color: var(--dom-accent-ink); }

/* ---- Header ------------------------------------------------------------- */
.md-header {
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(120%) blur(8px);
  color: var(--dom-ink);
  box-shadow: none;
  border-bottom: 1px solid var(--dom-hairline);
}
.md-header--shadow { box-shadow: none; }
.md-header__title { font-family: var(--dom-serif); font-weight: 600; letter-spacing: -0.01em; }
.md-header__button.md-logo { padding-right: .2rem; }
.md-search__form {
  background: var(--dom-band);
  border: 1px solid var(--dom-hairline);
  border-radius: 2px;
  box-shadow: none;
}
.md-search__input::placeholder { color: var(--dom-muted); }

/* Tabs */
.md-tabs {
  background: var(--dom-canvas);
  color: var(--dom-ink);
  border-bottom: 1px solid var(--dom-hairline);
}
/* All 9 items always visible: wrap to a second row instead of scrolling off. */
.md-tabs { height: auto; }
.md-tabs__list {
  flex-wrap: wrap;
  overflow: visible;
  row-gap: .1rem;
  padding: .25rem 0 .4rem;
}
.md-tabs__item { font-size: .66rem; letter-spacing: .005em; height: auto; white-space: nowrap; }
.md-tabs__link { opacity: .72; font-weight: 500; margin: .35rem .55rem .35rem 0; }
.md-tabs__link:hover,
.md-tabs__link--active { opacity: 1; color: var(--dom-ink); }

/* ---- Sidebar / nav ------------------------------------------------------ */
.md-nav { font-size: .7rem; }
.md-nav__title { color: var(--dom-muted); font-weight: 600; }
.md-nav__link--active,
.md-nav__link:focus,
.md-nav__link:hover { color: var(--dom-accent); }
.md-nav__item .md-nav__link--active { font-weight: 600; }

/* ---- Content width ------------------------------------------------------ */
.md-grid { max-width: var(--dom-maxw); }

/* ---- Buttons ------------------------------------------------------------ */
.md-typeset .md-button {
  border-radius: 999px;
  border: 1px solid var(--dom-hairline-strong);
  color: var(--dom-ink);
  background: var(--dom-canvas);
  font-weight: 500;
  padding: .5em 1.25em;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
  box-shadow: none;
}
.md-typeset .md-button:hover {
  background: var(--dom-band);
  border-color: var(--dom-ink);
  color: var(--dom-ink);
}
.md-typeset .md-button--primary {
  background: var(--dom-graphite);
  border-color: var(--dom-graphite);
  color: #fff;
}
.md-typeset .md-button--primary:hover {
  background: #000;
  border-color: #000;
  color: #fff;
}

/* ---- Cards / admonitions: ledger paper, 0px, hairline, no shadow -------- */
.md-typeset .admonition,
.md-typeset details {
  border: 1px solid var(--dom-hairline);
  border-left-width: 1px;
  border-radius: 0;
  box-shadow: none;
  background: var(--dom-canvas);
  font-size: .74rem;
}
.md-typeset .admonition-title,
.md-typeset summary {
  background: var(--dom-band);
  font-family: var(--dom-sans);
  font-weight: 600;
  color: var(--dom-ink);
}
.md-typeset .admonition-title::before,
.md-typeset summary::before { background-color: var(--dom-accent); }
.md-typeset .admonition.tip > .admonition-title,
.md-typeset .admonition.note > .admonition-title { border: none; }

/* Tables — ledger */
.md-typeset table:not([class]) {
  border: 1px solid var(--dom-hairline);
  border-radius: 0;
  box-shadow: none;
  font-size: .72rem;
}
.md-typeset table:not([class]) th {
  background: var(--dom-band);
  color: var(--dom-ink);
  font-weight: 600;
}
.md-typeset table:not([class]) td { border-top: 1px solid var(--dom-hairline); }

/* Code */
.md-typeset code { background: var(--dom-band); border-radius: 2px; font-size: .82em; }

/* Horizontal rule as a fine ledger line */
.md-typeset hr { border-bottom: 1px solid var(--dom-hairline); }

/* ==========================================================================
   Landing components (used in index.md)
   ========================================================================== */
.dom-hero { padding: 1.4rem 0 .4rem; }
.dom-eyebrow {
  font-family: var(--dom-sans);
  font-size: .64rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dom-accent);
  margin: 0 0 1rem;
  display: flex;
  align-items: center;
  gap: .6rem;
}
.dom-eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--dom-accent);
  display: inline-block;
}
.md-typeset .dom-hero h1 {
  font-size: 2.7rem;
  line-height: 1.06;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}
.dom-lede {
  font-size: 1rem !important;
  line-height: 1.55;
  color: var(--dom-ink-soft);
  max-width: 60ch;
}
.dom-lede strong { color: var(--dom-ink); font-weight: 600; }

/* Status metric strip */
.dom-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--dom-hairline);
  border-radius: 0;
  margin: 2.2rem 0 1rem;
}
.dom-metric { padding: 1.1rem 1.2rem; border-left: 1px solid var(--dom-hairline); }
.dom-metric:first-child { border-left: 0; }
.dom-metric .fig {
  font-family: var(--dom-serif);
  font-size: 1.9rem;
  font-weight: 600;
  line-height: 1;
  color: var(--dom-ink);
  letter-spacing: -0.02em;
}
.dom-metric .fig .u { color: var(--dom-accent); }
.dom-metric .lbl {
  font-size: .64rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--dom-muted);
  margin-top: .5rem;
  line-height: 1.35;
}

/* Two-level / feature cards */
.dom-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--dom-hairline);
  margin: 1.4rem 0;
}
.dom-card { padding: 1.5rem 1.5rem; border-left: 1px solid var(--dom-hairline); }
.dom-card:first-child { border-left: 0; }
.md-typeset .dom-card h3 {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  display: flex; align-items: baseline; gap: .55rem;
}
.dom-card .no {
  font-family: var(--dom-sans);
  font-size: .62rem; font-weight: 700;
  letter-spacing: .1em;
  color: var(--dom-accent);
  border: 1px solid var(--dom-hairline-strong);
  border-radius: 999px;
  padding: .1rem .5rem;
}
.dom-card p { font-size: .74rem; margin: .4rem 0 0; }

/* Section index — navigation cards */
.dom-index { border-top: 1px solid var(--dom-hairline); margin-top: 1.2rem; }
.md-typeset .dom-index__row {
  display: grid;
  grid-template-columns: 1.6rem 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 1rem .2rem;
  border-bottom: 1px solid var(--dom-hairline);
  text-decoration: none;
  color: var(--dom-ink);
  transition: padding-left .18s ease;
}
.md-typeset .dom-index__row:hover { padding-left: .8rem; background: var(--dom-band); }
.dom-index__num { font-family: var(--dom-serif); color: var(--dom-accent); font-size: .9rem; }
.dom-index__body b { font-family: var(--dom-serif); font-size: 1rem; font-weight: 600; display: block; }
.dom-index__body span { font-size: .72rem; color: var(--dom-muted); display: block; margin-top: .15rem; }
.dom-index__go { color: var(--dom-muted); font-size: 1.1rem; }
.md-typeset .dom-index__row:hover .dom-index__go { color: var(--dom-accent); }

/* Signoff */
.dom-signoff {
  margin-top: 2.4rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--dom-hairline);
  font-family: var(--dom-serif);
  font-size: 1rem;
  color: var(--dom-ink);
}

/* ---- Footer ------------------------------------------------------------- */
.md-footer { background: var(--dom-canvas); color: var(--dom-muted); }
.md-footer-meta { background: var(--dom-canvas); border-top: 1px solid var(--dom-hairline); }
.md-footer-copyright, .md-footer__inner { color: var(--dom-muted); }
.dom-studio { color: var(--dom-muted); }
.dom-studio a { color: var(--dom-ink); font-weight: 600; text-decoration: none; border-bottom: 1px solid var(--dom-hairline-strong); }
.dom-studio a:hover { color: var(--dom-accent); border-color: var(--dom-accent); }

/* ---- Responsive --------------------------------------------------------- */
@media screen and (max-width: 720px) {
  .dom-metrics { grid-template-columns: repeat(2, 1fr); }
  .dom-metric:nth-child(3) { border-left: 0; }
  .dom-metric:nth-child(3), .dom-metric:nth-child(4) { border-top: 1px solid var(--dom-hairline); }
  .dom-cards { grid-template-columns: 1fr; }
  .dom-card { border-left: 0; }
  .dom-card + .dom-card { border-top: 1px solid var(--dom-hairline); }
  .md-typeset .dom-hero h1 { font-size: 2rem; }
}