/* Self-hosted typography + cobalt + magenta palette for mkdocs-material.
 *
 * Typography: mkdocs.yml has theme.font: false to disable mkdocs-material's
 * Google Fonts auto-load. Satoshi (body) is pulled from Fontshare; JetBrains
 * Mono (code) from Google Fonts. Both bind to mkdocs-material's
 * --md-text-font / --md-code-font CSS variables in :root below.
 *
 * Satoshi was selected via /impeccable typeset (flagshipsyst-x00) as the
 * cobalt-friendly Inter replacement. Geometric humanist with technical
 * confidence — pairs naturally with JetBrains Mono and reads sharp on the
 * pure-black canvas the cobalt + magenta palette demands.
 */

@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&display=swap');

/* ─── Brand-shared variables (apply to BOTH schemes) ─────────
 * Cobalt + magenta accents and the typography stack are constant
 * across dark and light. Only the surface ramp inverts.
 */
:root {
  --md-text-font: "Satoshi", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --md-code-font: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
  --md-primary-fg-color:             #2D5BFF;
  --md-primary-fg-color--light:      #3B82F6;
  --md-primary-fg-color--dark:       #0050E0;
  --md-accent-fg-color:              #FF1FE7;
  --md-accent-fg-color--transparent: rgba(255, 31, 231, 0.1);
  --md-typeset-a-color:              #2D5BFF;
  --md-typeset-mark-color:           rgba(255, 31, 231, 0.25);
}

/* ─── Dark scheme (slate, primary) — pure black + cobalt + magenta */
[data-md-color-scheme="slate"] {
  --md-default-bg-color:        #000000;
  --md-default-bg-color--light: #0a0a14;
  --md-default-fg-color:        #e0e0ee;
  --md-default-fg-color--light: #9aa3bf;
  --md-code-bg-color:           #0a0a14;
  --md-code-fg-color:           #e0e0ee;
  --md-footer-bg-color:         #0a0a14;
  --md-footer-bg-color--dark:   #000000;
}

/* ─── Light scheme (default) — bone-white + cobalt + magenta
 * Surface palette mirrors DESIGN.md's Day-* tokens. Cobalt and
 * magenta saturate against bone-white as deliberately as they do
 * against pure black; only the neutral ramp inverts.
 */
[data-md-color-scheme="default"] {
  --md-default-bg-color:        #fafaf7;   /* bone-white (Operator White) */
  --md-default-bg-color--light: #f1f1ea;   /* Day Surface */
  --md-default-fg-color:        #07090f;   /* Bridge Black on light */
  --md-default-fg-color--light: #4a5266;   /* Day Mute Slate */
  --md-code-bg-color:           #f1f1ea;
  --md-code-fg-color:           #07090f;
  --md-footer-bg-color:         #f1f1ea;
  --md-footer-bg-color--dark:   #e6e6dd;
}

/* Tighter type, brighter accent links. */
.md-typeset a:hover {
  color: var(--md-accent-fg-color);
  text-decoration: underline wavy var(--md-accent-fg-color);
}

/* Magenta border on focused/active elements. */
.md-search__input:focus,
.md-tabs__link--active {
  border-bottom-color: var(--md-accent-fg-color);
}

/* Code-block accents */
.md-typeset code {
  border: 1px solid rgba(45, 91, 255, 0.3);
  background: var(--md-code-bg-color);
}

/* Admonitions get a cobalt left border by default, magenta for warnings. */
.md-typeset .admonition,
.md-typeset details {
  border-left-color: var(--md-primary-fg-color);
}
.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-left-color: var(--md-accent-fg-color);
}

/* Header matches the prompt's grey separator. */
.md-header {
  background: var(--md-default-bg-color--light);
  border-bottom: 1px solid #6b7280;
}

/* Selection highlight. */
::selection {
  background: var(--md-accent-fg-color);
  color: #000000;
}

/* ─── Page hero (deep pages: tagline + figure) ─────────────────
 * Auto-styles the first paragraph after the page H1 as a tagline,
 * and the first image-paragraph as a hero figure. No per-page
 * markdown changes needed for pages that already follow the
 * "H1 → intro paragraph → figure" rhythm.
 */
.md-content h1 + p {
  font-size: 1.125rem;
  line-height: 1.55;
  color: var(--md-default-fg-color--light);
  max-width: 65ch;
  margin: 0.5rem 0 2rem 0;
  font-weight: 400;
  letter-spacing: -0.005em;
}
.md-content h1 + p + p > img:only-child {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0 auto 2.5rem auto;
  border: 1px solid #1c2238;
}
[data-md-color-scheme="default"] .md-content h1 + p + p > img:only-child {
  border-color: #d8d8cd;
}

/* ─── Front-page hero block ───────────────────────────────── */
.cobalt-hero-tagline {
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 0.5rem 0 2.5rem 0;
  max-width: 64ch;
  color: var(--md-default-fg-color);
}
.cobalt-hero-tagline strong {
  font-weight: 700;
  color: #2D5BFF;
}
.cobalt-hero-palette {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 0 0 2.5rem 0;
  border: 1px solid #2D5BFF;
}

/* ─── Tile strip (above-the-fold screenshot row) ───────────
 * mkdocs/python-markdown sometimes wraps consecutive inline
 * children in a <p>; grid both the wrapper and any inner <p>
 * so the layout works under either rendering.
 */
.cobalt-tile-strip,
.cobalt-tile-strip > p {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  list-style: none;
  padding: 0;
}
.cobalt-tile-strip { margin: 2.5rem 0 4rem 0; }
.cobalt-tile-strip > p { margin: 0; }
.cobalt-tile {
  display: block;
  text-decoration: none;
  border: 1px solid #1c2238;
  background: #0a0a14;
  overflow: hidden;
  transition: border-color 200ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
}
.cobalt-tile:hover {
  border-color: #FF1FE7;
  transform: translateY(-2px);
}
.cobalt-tile:focus-visible {
  outline: 2px solid #FF1FE7;
  outline-offset: 2px;
}
/* Higher specificity than .md-typeset img so mkdocs-material's
 * `height: auto` doesn't defeat the aspect-ratio constraint. */
.md-typeset .cobalt-tile-img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #000000;
}
.cobalt-tile-label {
  display: block;
  padding: 10px 14px;
  font-family: var(--md-code-font);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: #2D5BFF;
  border-top: 1px solid #1c2238;
}

/* ─── Card grid (front-page nav: Where to next) ───────────
 * Same defensive double-selector as the tile strip — grid the
 * wrapper and any markdown-injected <p> so cards lay out as a
 * grid regardless of how the rendering pipeline groups them.
 */
.cobalt-cards,
.cobalt-cards > p {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  list-style: none;
  padding: 0;
}
.cobalt-cards { margin: 2rem 0 3rem 0; }
.cobalt-cards > p { margin: 0; }
@media (min-width: 600px) {
  .cobalt-cards,
  .cobalt-cards > p { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1080px) {
  .cobalt-cards,
  .cobalt-cards > p { grid-template-columns: repeat(4, 1fr); }
}
.cobalt-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  background: #0a0a14;
  border: 1px solid #1c2238;
  overflow: hidden;
  transition: border-color 200ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
}
.cobalt-card:hover {
  border-color: #FF1FE7;
  transform: translateY(-2px);
}
.cobalt-card:focus-visible {
  outline: 2px solid #FF1FE7;
  outline-offset: 2px;
}
/* Higher specificity than .md-typeset img — same reason as cobalt-tile-img. */
.md-typeset .cobalt-card-image {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: #000000;
  margin: 0;
  border-bottom: 1px solid #1c2238;
}
[data-md-color-scheme="default"] .md-typeset .cobalt-card-image {
  border-bottom-color: #d8d8cd;
}
.cobalt-card-stub {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 16 / 10;
  background: #000000;
  font-family: var(--md-code-font);
  font-size: 22px;
  font-weight: 700;
  color: #2D5BFF;
  letter-spacing: 0.04em;
  border-bottom: 1px solid #1c2238;
}
.cobalt-card-stub::before { content: "/ "; color: #5b657f; }
.cobalt-card-body {
  padding: 14px 18px;
}
.cobalt-card-title {
  display: block;
  font-family: var(--md-text-font);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: #fafaf7;
  margin: 0 0 6px 0;
}
.cobalt-card-hook {
  display: block;
  font-family: var(--md-text-font);
  font-size: 14px;
  line-height: 1.45;
  color: #9aa3bf;
  margin: 0;
}

/* Light-scheme overrides for tiles + cards */
[data-md-color-scheme="default"] .cobalt-tile,
[data-md-color-scheme="default"] .cobalt-card {
  background: #fafaf7;
  border-color: #d8d8cd;
}
[data-md-color-scheme="default"] .cobalt-tile-label,
[data-md-color-scheme="default"] .cobalt-card-image,
[data-md-color-scheme="default"] .cobalt-card-stub {
  border-color: #d8d8cd;
}
[data-md-color-scheme="default"] .cobalt-card-stub {
  background: #f1f1ea;
}
[data-md-color-scheme="default"] .cobalt-card-title {
  color: #07090f;
}
[data-md-color-scheme="default"] .cobalt-card-hook {
  color: #4a5266;
}

/* ─── Section spacing on the front page ─────────────────── */
.md-content h2 {
  margin-top: 4rem;
  padding-top: 0.5rem;
  border-top: 1px solid #1c2238;
}
[data-md-color-scheme="default"] .md-content h2 {
  border-top-color: #d8d8cd;
}
.md-content h1 + h2,
.md-content h1 + p + h2,
.md-content h1 + p + p + h2 {
  margin-top: 2rem;
  border-top: 0;
  padding-top: 0;
}

/* ─── Reduced motion ─────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .cobalt-tile,
  .cobalt-card {
    transition: border-color 100ms ease-out;
  }
  .cobalt-tile:hover,
  .cobalt-card:hover {
    transform: none;
  }
}