/* docbank: an archive desk at night. Deep ink surfaces, paper-warm details. */

:root {
  --md-text-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --md-code-font: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

[data-md-color-scheme="slate"] {
  --md-hue: 205;
  --db-bg: #0a0f14;
  --db-raised: #0e151c;
  --db-panel: #121b23;
  --db-panel-hover: #17232d;
  --db-border: #263541;
  --db-border-strong: #466170;
  --db-text: #e8edf0;
  --db-muted: #9aabb5;
  --db-paper: #e5c991;
  --db-accent: #79c9bc;
  --db-accent-bright: #a1e1d6;
  --md-default-bg-color: var(--db-bg);
  --md-default-fg-color: var(--db-text);
  --md-default-fg-color--light: #c2ccd1;
  --md-default-fg-color--lighter: #85959f;
  --md-primary-fg-color: var(--db-raised);
  --md-primary-fg-color--light: var(--db-panel);
  --md-primary-fg-color--dark: var(--db-bg);
  --md-primary-bg-color: var(--db-text);
  --md-accent-fg-color: var(--db-accent-bright);
  --md-typeset-a-color: var(--db-accent);
  --md-code-bg-color: #101820;
  /* Mermaid inherits accent/code variables this palette doesn't define;
     set the diagram colors explicitly. All pairs are WCAG-checked against
     the dark surface: node text 12.7:1, edge labels 8.1:1, borders 7.8:1. */
  --md-mermaid-node-bg-color: #1a292c;
  --md-mermaid-node-fg-color: var(--db-accent);
  --md-mermaid-edge-color: var(--db-muted);
  --md-mermaid-label-bg-color: var(--db-bg);
  --md-mermaid-label-fg-color: var(--db-text);
}

.md-header,
.md-tabs {
  background: color-mix(in srgb, var(--db-raised) 94%, transparent);
  border-bottom: 1px solid var(--db-border);
  backdrop-filter: blur(12px);
}

.md-typeset {
  font-size: 0.82rem;
}

.md-typeset a {
  color: var(--db-accent);
  text-decoration-thickness: 0.06em;
  text-underline-offset: 0.18em;
}

.md-typeset a:hover,
.md-nav__link:hover,
.md-nav__link--active {
  color: var(--db-accent-bright);
}

.md-nav__item .md-nav__link--active {
  background: rgba(121, 201, 188, 0.07);
  box-shadow: inset 2px 0 0 var(--db-accent);
}

.md-nav__item--section > .md-nav__link,
.md-nav__title {
  letter-spacing: 0.015em;
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4 {
  color: #f4f6f7;
  font-weight: 620;
  letter-spacing: -0.018em;
}

.md-typeset h1 {
  max-width: 24ch;
  margin-bottom: 0.65em;
  font-size: clamp(1.4rem, 3.5vw, 2.3rem);
  line-height: 1.1;
}

.md-typeset h2 {
  padding-bottom: 0.32em;
  border-bottom: 1px solid var(--db-border);
}

.md-typeset .eyebrow {
  margin: 0 0 0.8rem;
  color: var(--db-paper);
  font-family: var(--md-code-font);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.md-typeset .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.4rem 0 2rem;
}

.md-typeset .md-button {
  border-color: var(--db-border-strong);
  border-radius: 2px;
}

.md-typeset .md-button--primary {
  background: var(--db-accent);
  border-color: var(--db-accent);
  color: #07100f;
}

.md-typeset .md-button--primary:hover,
.md-typeset .md-button--primary:focus {
  background: var(--db-accent-bright);
  border-color: var(--db-accent-bright);
  color: #07100f;
}

.md-typeset .signal-grid,
.md-typeset .feature-grid {
  display: grid;
  gap: 0.8rem;
  margin: 1.4rem 0 2.2rem;
}

.md-typeset .signal-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.md-typeset .signal-grid section,
.md-typeset .feature-grid section {
  min-width: 0;
  padding: 1rem;
  background: linear-gradient(145deg, var(--db-panel), #0f171e);
  border: 1px solid var(--db-border);
  border-radius: 2px;
}

.md-typeset .signal-grid section {
  display: flex;
  flex-direction: column;
  gap: 0.38rem;
}

.md-typeset .signal-grid strong {
  color: var(--db-paper);
  font-family: var(--md-code-font);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.md-typeset .signal-grid span {
  color: var(--db-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.md-typeset .feature-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.md-typeset .feature-grid section:hover {
  background: var(--db-panel-hover);
  border-color: var(--db-border-strong);
}

.md-typeset .feature-grid h3 {
  margin: 0 0 0.42rem;
  color: var(--db-paper);
  font-size: 1rem;
}

.md-typeset .feature-grid p {
  margin: 0;
  color: var(--db-muted);
}

.md-typeset .admonition,
.md-typeset details {
  background: var(--db-panel);
  border-color: var(--db-border-strong);
  border-radius: 2px;
}

.md-typeset .admonition-title,
.md-typeset summary {
  background: rgba(229, 201, 145, 0.07);
}

.md-typeset table:not([class]) {
  border-collapse: collapse;
  font-size: 0.76rem;
}

.md-typeset table:not([class]) th {
  background: #15212a;
  color: var(--db-paper);
  font-weight: 650;
}

.md-typeset table:not([class]) th,
.md-typeset table:not([class]) td {
  padding: 0.58em 0.76em;
  border-color: var(--db-border);
  vertical-align: top;
}

.md-typeset table:not([class]) tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.016);
}

.md-typeset code:not(pre code) {
  padding: 0.1em 0.3em;
  background: var(--md-code-bg-color);
  border: 1px solid var(--db-border);
  border-radius: 2px;
}

.md-typeset .highlight pre,
.md-typeset .mermaid {
  background: #0e161d;
  border: 1px solid var(--db-border);
  border-radius: 2px;
}

.md-typeset .mermaid {
  padding: 1rem;
  overflow-x: auto;
}

::selection {
  background: #31564f;
  color: #ffffff;
}

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

@media (max-width: 50rem) {
  .md-typeset .signal-grid,
  .md-typeset .feature-grid {
    grid-template-columns: 1fr;
  }

  .md-typeset .hero-actions .md-button {
    width: 100%;
    text-align: center;
  }
}