/* kdbl brand palette — mirrors the main site (https://kdbl.co.uk) design
   tokens: a dark navy surface with an indigo → violet → pink brand gradient,
   Inter body text, and Space Grotesk for display headings. Token values are
   copied verbatim from the main site's css/styles.css :root. */

@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
  --kdbl-navy-950: #07090f;
  --kdbl-navy-900: #0a0e1a;
  --kdbl-navy-850: #0d1322;
  --kdbl-navy-800: #111a2e;
  --kdbl-brand-blue:   #4f6bed;
  --kdbl-brand-indigo: #6366f1;
  --kdbl-brand-violet: #8b5cf6;
  --kdbl-brand-pink:   #d36fdc;
  --kdbl-primary-light: #8aa0ff;
  --kdbl-gradient: linear-gradient(120deg, var(--kdbl-brand-blue), var(--kdbl-brand-violet) 45%, var(--kdbl-brand-pink));

  /* Material "primary" = header / nav background. Keep it dark navy in BOTH
     colour schemes so the white KDBL wordmark always sits on brand navy,
     exactly like the main-site navbar. */
  --md-primary-fg-color:        var(--kdbl-navy-900);
  --md-primary-fg-color--light: var(--kdbl-navy-800);
  --md-primary-fg-color--dark:  var(--kdbl-navy-950);
  --md-primary-bg-color:        #f4f6fc;
  --md-primary-bg-color--light: #f4f6fc;

  /* Indigo interactive accent (links / hover / focus). */
  --md-accent-fg-color:         var(--kdbl-brand-indigo);
}

/* Light scheme: light reading surface, indigo links beneath the navy header. */
[data-md-color-scheme="default"] {
  --md-typeset-a-color: var(--kdbl-brand-indigo);
  --md-accent-fg-color: var(--kdbl-brand-violet);
}

/* Dark scheme: navy surface + light ink, lighter-indigo links — matches the
   main site's dark-only look. */
[data-md-color-scheme="slate"] {
  --md-default-bg-color:          var(--kdbl-navy-900);
  --md-default-fg-color:          #f4f6fc;
  --md-default-fg-color--light:   #aab2cb;
  --md-default-fg-color--lighter: #767e99;
  --md-primary-fg-color:          var(--kdbl-navy-900);
  --md-typeset-a-color:           var(--kdbl-primary-light);
  --md-accent-fg-color:           var(--kdbl-brand-violet);
  --md-code-bg-color:             var(--kdbl-navy-850);
  --md-footer-bg-color:           var(--kdbl-navy-950);
}

/* Display font for headings + the header title, mirroring the main site's
   Space Grotesk --font-display. Body copy stays Inter (set in mkdocs.yml). */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3,
.md-header__title {
  font-family: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Brand-gradient page title, echoing the main site's gradient wordmark. */
.md-typeset h1 {
  background: var(--kdbl-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
/* Keep the permalink (¶) anchor legible — it must not inherit the clip. */
.md-typeset h1 .headerlink {
  -webkit-text-fill-color: var(--md-default-fg-color--lighter);
  color: var(--md-default-fg-color--lighter);
}

/* Brand hairline under the header, echoing the main-site navbar. */
.md-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 1px 0 rgba(99, 102, 241, 0.18);
}

/* Responsive media embeds (YouTube / Vimeo iframes) — wrap in
   <div class="video-embed"> in Markdown. See index.md for the pattern. */
.video-embed {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  max-width: 100%;
  border-radius: 0.5rem;
  margin: 1rem 0;
}
.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}