/* Auto-rotating crossfade hero for the homepage.
   Pure CSS — four full-window shots fade between each other on a 24s cycle
   (6s per slide). Indicator dots highlight the active slide in sync. */

.hero {
  max-width: 940px;
  margin: 1.5rem auto 2rem;
}

.hero-slides {
  position: relative;
  aspect-ratio: 1280 / 800;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.38);
}

.hero-slides img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  animation: heroFade 30s infinite;
}

.hero-slides img:nth-child(1) { animation-delay: 0s; }
.hero-slides img:nth-child(2) { animation-delay: 6s; }
.hero-slides img:nth-child(3) { animation-delay: 12s; }
.hero-slides img:nth-child(4) { animation-delay: 18s; }
.hero-slides img:nth-child(5) { animation-delay: 24s; }

@keyframes heroFade {
  0%   { opacity: 0; }
  1.7% { opacity: 1; }   /* fade in  (~0.5s) */
  18%  { opacity: 1; }   /* hold     (~5s)   */
  21%  { opacity: 0; }   /* fade out (~1s)   */
  100% { opacity: 0; }
}

.hero-dots {
  display: flex;
  justify-content: center;
  gap: 9px;
  margin-top: 12px;
}

.hero-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--md-default-fg-color--lighter);
  animation: heroDot 30s infinite;
}

.hero-dots span:nth-child(1) { animation-delay: 0s; }
.hero-dots span:nth-child(2) { animation-delay: 6s; }
.hero-dots span:nth-child(3) { animation-delay: 12s; }
.hero-dots span:nth-child(4) { animation-delay: 18s; }
.hero-dots span:nth-child(5) { animation-delay: 24s; }

@keyframes heroDot {
  0%, 21%, 100% { background: var(--md-default-fg-color--lighter); }
  1.7%, 18%     { background: var(--md-accent-fg-color); }
}

/* Respect reduced-motion: drop the animation, show the first slide static. */
@media (prefers-reduced-motion: reduce) {
  .hero-slides img { animation: none; }
  .hero-slides img:nth-child(1) { opacity: 1; }
  .hero-dots span { animation: none; }
  .hero-dots span:nth-child(1) { background: var(--md-accent-fg-color); }
}

/* Download page: one card per platform. */

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0 2rem;
}

.download-card {
  padding: 1.25rem 1.25rem 1rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 10px;
  background: var(--md-code-bg-color);
}

.download-card h3 {
  margin-top: 0;
}

.download-card .md-button {
  display: block;
  text-align: center;
  margin: 0.4rem 0 0;
}