/* ============================================================
   HERO SECTION
   Animated gradient background, headline, tagline, CTAs,
   and bouncing scroll-down indicator.

   NOTE: .section--hero base layout (min-block-size, display flex,
   align-items, padding-block-start) is defined in layout.css.
   This file handles visual appearance only.
   ============================================================ */

/* Animated gradient background */
.section--hero {
  background: linear-gradient(
    -45deg,
    var(--color-brand-primary),
    var(--color-brand-primary-dark),
    var(--color-brand-accent),
    var(--color-brand-primary-light)
  );
  background-size: 400% 400%;
  animation: hero-gradient 12s ease infinite;
  color: var(--color-text-inverse);
  position: relative;
}

/* Content block — centered, max-width constrained */
.hero__content {
  text-align: center;
  max-inline-size: 800px;
  margin-inline: auto;
}

/* Headline */
.hero__headline {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-block-end: var(--space-6);
  color: var(--color-text-inverse);
}

/* Tagline */
.hero__tagline {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-relaxed);
  margin-block-end: var(--space-10);
  color: var(--color-text-inverse);
  opacity: 0.9;
}

/* CTA button row */
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: center;
}

/* Secondary button override for hero (white outline on gradient) */
.hero__actions .btn--secondary {
  color: var(--color-text-inverse);
  border-color: var(--color-text-inverse);
  background-color: transparent;
}

.hero__actions .btn--secondary:hover {
  background-color: rgba(255, 255, 255, 0.15);
}

/* ============================================================
   GRADIENT ANIMATION
   ============================================================ */

@keyframes hero-gradient {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ============================================================
   SCROLL-DOWN INDICATOR
   ============================================================ */

.scroll-indicator {
  position: absolute;
  inset-block-end: var(--space-8);
  inset-inline-start: 50%;
  transform: translateX(-50%);
  color: var(--color-text-inverse);
  opacity: 0.7;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(10px); }
}

/* ============================================================
   REDUCED MOTION
   Honour OS-level preference — disable all animations.
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .section--hero {
    animation: none;
  }

  .scroll-indicator {
    animation: none;
  }
}