/* Firefly DataScience — docs theme.
 *
 * Brand: cyan/teal = the classical/data core; amber firefly = the gated GenAI accelerator.
 * Boldness is spent in one place — amber appears ONLY in the `firefly` admonition that marks the
 * recurring thesis ("the LLM proposes; the classical engine decides"). Everything else is cyan.
 *
 * Typography: Maven Pro (display/headings/nav) · Inter (body, via theme.font) · JetBrains Mono
 * (code, via theme.font). Maven Pro is imported here and applied to headings only.
 */

@import url('https://fonts.googleapis.com/css2?family=Maven+Pro:wght@500;600;700;800&display=swap');

/* ---- Brand tokens --------------------------------------------------------------------------- */
:root {
  --ff-display: "Maven Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --ff-cyan: #06b6d4;
  --ff-cyan-deep: #0891b2;
  --ff-cyan-light: #67e8f9;
  --ff-cyan-xlight: #d6fbff;
  --ff-amber: #f6a821;
  --ff-sky-1: #06121a;
  --ff-sky-2: #0a1b22;
  --ff-sky-3: #071419;
}

/* Cyan accent for both schemes (primary is set to `cyan` in mkdocs.yml; we refine the accents). */
[data-md-color-scheme="default"] {
  --md-accent-fg-color: var(--ff-cyan-deep);
  --md-typeset-a-color: var(--ff-cyan-deep);
  --ff-card-bg: #ffffff;
  --ff-card-border: #cfe9ef;
  --ff-rule: linear-gradient(90deg, var(--ff-cyan-light), rgba(34, 211, 238, 0.05));
}
[data-md-color-scheme="slate"] {
  --md-accent-fg-color: var(--ff-cyan-light);
  --md-typeset-a-color: var(--ff-cyan-light);
  --md-default-bg-color: #0b1a20;
  --md-code-bg-color: #0a1820;
  --ff-card-bg: #0e2129;
  --ff-card-border: #1d3a44;
  --ff-rule: linear-gradient(90deg, var(--ff-cyan), rgba(34, 211, 238, 0.04));
}

/* ---- Typography ----------------------------------------------------------------------------- */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-typeset h4,
.md-typeset h5,
.md-typeset h6,
.md-header__title,
.md-nav__title,
.md-ellipsis {
  font-family: var(--ff-display);
  letter-spacing: -0.01em;
}
.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--md-default-fg-color);
}
.md-typeset h2 {
  font-weight: 700;
  margin-top: 2.4em;
  padding-bottom: 0.25em;
}
/* Signature: a short cyan accent rule under h2, echoing the banner's accent rule. */
.md-typeset h2::after {
  content: "";
  display: block;
  width: 2.4rem;
  height: 2.5px;
  margin-top: 0.45rem;
  border-radius: 2px;
  background: var(--ff-rule);
}
.md-typeset h3 { font-weight: 700; }
/* The header site-title carries the brand voice. */
.md-header__title { font-weight: 700; font-size: 1.05rem; }

/* ---- Hero (homepage) ------------------------------------------------------------------------ */
/* Visually-hidden but accessible — gives the homepage a real <h1> (so MkDocs doesn't inject a
 * redundant "Home" title) while the banner serves as the visual masthead. */
.firefly-sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.firefly-hero {
  margin: 0.4rem 0 2.2rem;
}
.firefly-hero img {
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 14px 40px -18px rgba(6, 182, 212, 0.55), 0 2px 0 rgba(255, 255, 255, 0.03) inset;
  display: block;
}
.firefly-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.3rem;
  align-items: center;
}
/* Primary CTA — filled cyan; secondary — outlined. */
.md-typeset .firefly-cta .md-button {
  border-radius: 9px;
  font-family: var(--ff-display);
  font-weight: 600;
  letter-spacing: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}
.md-typeset .firefly-cta .md-button--primary {
  background: var(--ff-cyan-deep);
  border-color: var(--ff-cyan-deep);
  color: #fff;
}
.md-typeset .firefly-cta .md-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px -10px rgba(6, 182, 212, 0.7);
  background: var(--ff-cyan);
  border-color: var(--ff-cyan);
  color: #fff;
}

/* ---- Grid cards ----------------------------------------------------------------------------- */
.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li,
.md-typeset .grid > .card {
  border: 1px solid var(--ff-card-border);
  border-radius: 13px;
  padding: 1.05rem 1.15rem;
  background: var(--ff-card-bg);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}
.md-typeset .grid.cards > ul > li:hover,
.md-typeset .grid.cards > ol > li:hover,
.md-typeset .grid > .card:hover {
  /* Firefly glow on hover. */
  transform: translateY(-3px);
  border-color: var(--ff-cyan);
  box-shadow: 0 12px 30px -16px rgba(6, 182, 212, 0.6);
}
.md-typeset .grid.cards .twemoji,
.md-typeset .grid.cards :is(.lg, .xl) {
  color: var(--ff-cyan-deep);
}
[data-md-color-scheme="slate"] .md-typeset .grid.cards .twemoji {
  color: var(--ff-cyan-light);
}
.md-typeset .grid.cards > ul > li > hr {
  margin: 0.7rem 0;
  border-color: var(--ff-card-border);
}

/* ---- Code, tables, blockquotes -------------------------------------------------------------- */
.md-typeset pre > code {
  border-radius: 10px;
}
.md-typeset code {
  border-radius: 5px;
}
.md-typeset table:not([class]) {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--ff-card-border);
  box-shadow: none;
}
.md-typeset table:not([class]) th {
  background: rgba(6, 182, 212, 0.08);
  font-family: var(--ff-display);
  font-weight: 700;
}
.md-typeset table:not([class]) tr:hover {
  background: rgba(6, 182, 212, 0.04);
}
.md-typeset blockquote {
  border-left-color: var(--ff-cyan);
}

/* ---- Signature: the `firefly` admonition (amber lightbulb) ---------------------------------- *
 * Use `!!! firefly "…"` (or `??? firefly`) for the "LLM proposes; classical decides" insight.    */
:root {
  --md-admonition-icon--firefly: url('data:image/svg+xml;charset=utf-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M12 2A7 7 0 0 0 5 9c0 2.38 1.19 4.47 3 5.74V17a1 1 0 0 0 1 1h6a1 1 0 0 0 1-1v-2.26c1.81-1.27 3-3.36 3-5.74a7 7 0 0 0-7-7M9 21a1 1 0 0 0 1 1h4a1 1 0 0 0 1-1v-1H9z"/></svg>');
}
.md-typeset .admonition.firefly,
.md-typeset details.firefly {
  border-color: var(--ff-amber);
  box-shadow: 0 4px 18px -12px rgba(246, 168, 33, 0.6);
}
.md-typeset .firefly > .admonition-title,
.md-typeset .firefly > summary {
  background-color: rgba(246, 168, 33, 0.12);
}
.md-typeset .firefly > .admonition-title::before,
.md-typeset .firefly > summary::before {
  background-color: var(--ff-amber);
  -webkit-mask-image: var(--md-admonition-icon--firefly);
          mask-image: var(--md-admonition-icon--firefly);
}

/* ---- Footer / misc -------------------------------------------------------------------------- */
.md-footer-meta {
  background-color: var(--ff-sky-1);
}
.md-typeset hr {
  border-bottom-color: var(--ff-card-border);
}

/* ---- Quality floor: focus + reduced motion -------------------------------------------------- */
.md-typeset .firefly-cta .md-button:focus-visible,
.md-typeset .grid.cards > ul > li:focus-within {
  outline: 2px solid var(--ff-cyan);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  .md-typeset .firefly-cta .md-button,
  .md-typeset .grid.cards > ul > li,
  .md-typeset .grid.cards > ol > li {
    transition: none;
  }
  .md-typeset .firefly-cta .md-button:hover,
  .md-typeset .grid.cards > ul > li:hover {
    transform: none;
  }
}