/*
 * MATH-PROGRAMME public front door.
 *
 * These classes are intentionally unique to docs/index.md. The homepage does
 * not reuse the legacy frontispiece/programme-spine component stack, so its
 * layout has one stylesheet owner instead of depending on cross-file cascade.
 */

.home-hero {
  position: relative;
  left: 50%;
  width: 100vw;
  margin: -1.6rem 0 4rem -50vw;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 14%, color-mix(in srgb, var(--gcl-gold-300) 12%, transparent), transparent 24rem),
    var(--gc-paper-deep);
  border-top: 3px solid var(--gcl-gold-400);
  border-bottom: 1px solid var(--gc-rule);
}

.home-hero::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: max(1rem, calc((100vw - 72rem) / 2));
  width: 1px;
  background: linear-gradient(var(--gcl-gold-400), transparent 42%);
  content: "";
  opacity: 0.7;
  pointer-events: none;
}

.home-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 72rem;
  min-height: 34rem;
  margin: 0 auto;
  padding: clamp(4.5rem, 8vh, 6.5rem) clamp(1.4rem, 5vw, 4rem) 3rem;
}

.home-hero__eyebrow {
  max-width: 50rem;
  margin: 0 0 1.4rem !important;
  color: var(--gc-signal-dark);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.home-hero h1 {
  max-width: 13ch;
  margin: 0;
  color: var(--gc-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.93;
  text-wrap: balance;
}

.home-hero__thesis {
  max-width: 43rem;
  margin: 1.8rem 0 0 !important;
  color: var(--gc-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1.4 !important;
}

.home-hero__summary {
  max-width: 42rem;
  margin: 1rem 0 0 !important;
  color: var(--gc-muted);
  font-size: 0.96rem;
  line-height: 1.65 !important;
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 2rem;
}

.home-action {
  display: inline-flex;
  min-height: 2.9rem;
  padding: 0.72rem 1.05rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gcl-navy-900);
  color: var(--gcl-navy-900) !important;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none !important;
  text-transform: uppercase;
}

.home-action:hover {
  border-color: var(--gc-signal-dark);
  color: var(--gc-signal-dark) !important;
}

.home-action--primary {
  background: var(--gcl-navy-900);
  color: var(--gcl-parchment-50) !important;
}

.home-action--primary:hover {
  background: var(--gcl-navy-800);
  color: var(--gcl-parchment-50) !important;
}

.home-pipeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  margin-top: clamp(3rem, 7vh, 4.5rem);
  border-top: 1px solid var(--gc-rule);
  border-bottom: 1px solid var(--gc-rule);
}

.home-pipeline__stage {
  display: grid;
  min-width: 0;
  padding: 1rem 0.9rem;
  color: var(--gc-ink) !important;
  text-decoration: none !important;
}

.home-pipeline__stage:hover {
  background: color-mix(in srgb, var(--gc-signal) 9%, transparent);
}

.home-pipeline__number,
.home-pipeline__arrow {
  color: var(--gc-signal-dark);
  font-family: Georgia, "Times New Roman", serif;
}

.home-pipeline__number {
  font-size: 0.78rem;
}

.home-pipeline__name {
  margin-top: 0.25rem;
  color: var(--gcl-navy-900);
  font-size: clamp(0.82rem, 1.2vw, 1rem);
  font-weight: 850;
}

.home-pipeline__verb {
  margin-top: 0.22rem;
  color: var(--gc-muted);
  font-size: 0.73rem;
  line-height: 1.45;
}

.home-pipeline__arrow {
  align-self: center;
  padding: 0 0.2rem;
  font-size: 1.15rem;
}

[data-md-color-scheme="slate"] .home-action {
  border-color: var(--gcl-gold-300);
  color: var(--gcl-parchment-50) !important;
}

[data-md-color-scheme="slate"] .home-action--primary {
  background: var(--gcl-navy-950);
}

[data-md-color-scheme="slate"] .home-pipeline__name {
  color: var(--gcl-parchment-50);
}

@media (max-width: 760px) {
  .home-hero {
    border-top-width: 2px;
  }

  .home-hero::before {
    left: 0.8rem;
  }

  .home-hero__inner {
    min-height: 0;
    padding: 3.6rem 1.35rem 2.4rem;
  }

  .home-hero h1 {
    font-size: clamp(3rem, 15vw, 4.6rem);
    letter-spacing: -0.035em;
  }

  .home-pipeline {
    grid-template-columns: 1fr;
  }

  .home-pipeline__stage {
    padding: 0.9rem 0;
  }

  .home-pipeline__arrow {
    justify-self: start;
    padding: 0.15rem 0;
    transform: rotate(90deg);
  }
}

@media print {
  .home-hero {
    left: auto;
    width: auto;
    margin: 0 0 2rem;
    border-top-color: #000;
  }

  .home-hero__inner {
    min-height: 0;
    padding: 2rem 0;
  }

  .home-hero__actions {
    display: none;
  }
}