:root {
  color-scheme: light dark;

  /* Palette: slate blue (firm/trustworthy) + dusty rose (warmth/reassurance)
     + teal (clarity/action) + warm taupe (grounding), on a cream base.
     "Gentle but firm" — bold blue header, soft cream body, energetic teal
     CTAs, rose as the one purely decorative/interactive touch. */
  --bg: #faf8f4;
  --bg-raised: #f5f1e8;
  --fg: #333333;
  --fg-muted: #6b6560;
  --border: #e5ddd0;

  --slate: #4a6fa5;
  --rose: #d9a9b0;
  --teal: #009688;
  --taupe: #b19a75;

  --heading: var(--slate);
  --accent: var(--slate);
  --accent-fg: #ffffff;
  /* Darkened from --teal: #009688 white-on-teal was 3.67:1, fails WCAG AA
     (needs 4.5:1) for button-label-sized text. This hits 4.90:1. */
  --cta: #007f73;
  --cta-fg: #ffffff;

  --radius: 0.5rem;
  --max-width: 42rem;

  --font-heading: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-body: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-accent: "Source Code Pro", "Courier New", monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1917;
    --bg-raised: #262220;
    --fg: #f0ebe3;
    --fg-muted: #a89e92;
    --border: #3a352f;

    --slate: #8fa8d1;
    --rose: #e6c3ca;
    --teal: #2dd4c4;
    --taupe: #cbb190;

    --heading: var(--slate);
    --accent: var(--slate);
    --accent-fg: #14161a;
    --cta: var(--teal);
    --cta-fg: #0f1115;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  line-height: 1.6;
  background: var(--bg);
  color: var(--fg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a { color: var(--accent); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--cta);
  color: var(--cta-fg);
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
  left: 0;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--heading);
  line-height: 1.25;
}

code, kbd, .accent-text {
  font-family: var(--font-accent);
}

/* Header: the "firm leadership" statement — solid, confident, warm text
   rather than stark white, with a rose touch on interaction. */
header.site {
  background: var(--slate);
}
header.site .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
header.site .brand {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--bg);
  text-decoration: none;
}
header.site nav {
  display: flex;
  gap: 1.5rem;
}
header.site nav a {
  color: var(--bg);
  opacity: 0.85;
  text-decoration: none;
  font-size: 0.95rem;
}
/* Rose as text color here would be ~2.5:1 against the blue header — too
   low-contrast to read. Keep the text legible, use rose as an underline
   instead so the "gentle" accent doesn't cost readability. */
header.site nav a:hover {
  opacity: 1;
  text-decoration: underline;
  text-decoration-color: var(--rose);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
/* The default --cta focus ring is only ~1:1 against this header's own
   background — swap in the header's own text color, already proven at
   4.82:1 against slate blue. */
header.site a:focus-visible {
  outline-color: var(--bg);
}

main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 1.5rem;
  width: 100%;
}

/* Footer: grounding warm-taupe band bookending the blue header. */
footer.site {
  background: var(--bg-raised);
  border-top: 1px solid var(--taupe);
  margin-top: 2rem;
}
footer.site .inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--fg-muted);
}
footer.site nav {
  display: flex;
  gap: 1.25rem;
}
footer.site nav a {
  color: var(--slate);
  text-decoration: none;
}
/* Same reasoning as the header nav: rose text on this background is
   ~1.8:1, nearly invisible. Underline instead of recoloring. */
footer.site nav a:hover {
  text-decoration: underline;
  text-decoration-color: var(--rose);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  background: var(--cta);
  color: var(--cta-fg);
  text-decoration: none;
  font-weight: 600;
  border: none;
  font-size: 1rem;
  cursor: pointer;
}
.btn:hover { opacity: 0.9; }

/* Explicit, high-contrast focus ring everywhere — the default browser
   outline can get lost against the colored header/footer bands. */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--cta);
  outline-offset: 2px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}
input, textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--fg);
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 1.25rem;
}
input:focus, textarea:focus {
  outline: 2px solid var(--cta);
  outline-offset: 1px;
}

.field-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Course landing pages (layouts/courses/single.html) */
.course-hero {
  text-align: center;
}
.course-subhead {
  font-style: italic;
  color: var(--fg-muted);
  margin-top: 0;
}
.course-value-prop {
  font-size: 1.05rem;
  margin: 1.5rem 0;
}
.course-social-proof {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--fg-muted);
}
.enroll-form {
  max-width: 24rem;
  margin: 1.5rem auto;
  text-align: left;
}
.enroll-status {
  text-align: center;
}

.course-credibility,
.course-curriculum {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin: 3rem 0;
}
.course-bullets {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
.course-bullets li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
}
.course-bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cta);
  font-weight: 700;
}
.course-curriculum-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}
.course-curriculum-list li {
  margin-bottom: 1rem;
}
.course-day-label {
  font-family: var(--font-heading);
  color: var(--cta);
  font-weight: 700;
}
.course-repeat-cta {
  text-align: center;
  margin-top: 3rem;
}