/* hero-molecules.css — Scientific Hero Section carousel
 * Owns: .shm-* classes for molecule card carousel on homepage
 * Does NOT own: tokens.css variables, layout.ejs
 */

.shm-hero {
  position: relative;
  padding: var(--space-3xl) var(--space-lg);
  background: var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
  overflow: hidden;
  contain: layout style;
}

.shm-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.shm-eyebrow {
  font: var(--text-label);
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin: 0;
}

/* ── Skeleton loader ───────────────────────────────────────────── */
.shm-skeleton {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  padding: 0 var(--space-md);
}

.shm-skeleton__card {
  min-width: 280px;
  height: 220px;
  border-radius: var(--radius-card);
  background: linear-gradient(110deg, var(--bg-card) 30%, var(--bg-surface) 50%, var(--bg-card) 70%);
  background-size: 200% 100%;
  animation: shm-shimmer 1.5s ease infinite;
  border: 1px solid var(--border-subtle);
}

@keyframes shm-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Carousel container ────────────────────────────────────────── */
.shm-carousel {
  position: relative;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.shm-carousel[data-loaded="true"] {
  opacity: 1;
}

.shm-track {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: var(--space-sm) var(--space-md);
  outline: none;
}

.shm-track::-webkit-scrollbar {
  display: none;
}

/* ── Card ──────────────────────────────────────────────────────── */
.shm-card {
  flex: 0 0 auto;
  min-width: 280px;
  max-width: 320px;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid rgba(201, 169, 110, 0.06);
  border-radius: var(--radius-card);
  scroll-snap-align: start;
  transition: border-color var(--transition), box-shadow var(--transition);
  contain: layout style;
}

.shm-card:hover {
  border-color: var(--border);
  box-shadow: var(--shadow-card-hover);
}

.shm-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}

.shm-card__category {
  font: var(--text-xs);
  font-family: var(--font-body);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.shm-card__confidence {
  font: var(--text-xs);
  font-family: var(--font-body);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-chip);
  letter-spacing: 0.04em;
}

.shm-card__confidence--high {
  background: rgba(76, 175, 80, 0.15);
  color: #81c784;
}

.shm-card__confidence--medium {
  background: rgba(255, 183, 77, 0.15);
  color: #ffb74d;
}

.shm-card__confidence--experimental {
  background: rgba(158, 158, 158, 0.15);
  color: #bdbdbd;
}

.shm-card__title {
  font: var(--text-h3);
  font-family: var(--font-headline);
  color: var(--text);
  margin: 0 0 var(--space-sm);
  font-weight: 600;
}

.shm-card__sensory {
  font: var(--text-sm);
  font-family: var(--font-body);
  color: var(--text-dim);
  margin: 0 0 var(--space-md);
  line-height: 1.5;
}

.shm-card__source {
  margin-bottom: var(--space-sm);
}

.shm-card__source-pill {
  font: var(--text-xs);
  font-family: var(--font-body);
  color: var(--text-muted);
  background: rgba(201, 169, 110, 0.08);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.shm-card__ingredients {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.shm-card__ing-pill {
  font: var(--text-xs);
  font-family: var(--font-body);
  color: var(--accent);
  background: rgba(201, 169, 110, 0.06);
  border: 1px solid var(--border-subtle);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.shm-card__ing-pill:hover {
  background: rgba(201, 169, 110, 0.12);
  border-color: var(--border);
}

/* ── Navigation arrows ─────────────────────────────────────────── */
.shm-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--accent);
  font-size: 1.4rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  z-index: 2;
  min-height: var(--tap-min);
  min-width: var(--tap-min);
}

.shm-nav:hover {
  background: var(--bg-surface);
  border-color: var(--border-hover);
}

.shm-nav--prev {
  left: 4px;
}

.shm-nav--next {
  right: 4px;
}

/* ── Dots ──────────────────────────────────────────────────────── */
.shm-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.shm-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--text-disabled);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.shm-dot--active {
  background: var(--accent);
  transform: scale(1.3);
}

/* ── CTA ──────────────────────────────────────────────────────── */
.shm-cta {
  display: block;
  text-align: center;
  margin-top: var(--space-xl);
  font: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
}

.shm-cta:hover {
  color: var(--accent-hover);
}

/* ── Reduced motion ────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .shm-skeleton__card {
    animation: none;
  }
  .shm-carousel {
    opacity: 1;
    transition: none;
  }
  .shm-card {
    transition: none;
  }
  .shm-track {
    scroll-behavior: auto;
  }
  .shm-dot {
    transition: none;
  }
  .shm-nav {
    transition: none;
  }
}

/* ── Responsive: 375px (small mobile) ──────────────────────────── */
@media (max-width: 480px) {
  .shm-hero {
    padding: var(--space-xl) var(--space-md);
  }
  .shm-card {
    min-width: 260px;
    max-width: 280px;
    padding: var(--space-md);
  }
  .shm-skeleton__card {
    min-width: 260px;
    height: 200px;
  }
  .shm-nav {
    display: none;
  }
}

/* ── Responsive: 768px (tablet) ────────────────────────────────── */
@media (min-width: 768px) {
  .shm-hero {
    padding: var(--space-3xl) var(--space-xl);
  }
  .shm-track {
    padding: var(--space-sm) var(--space-xl);
  }
  .shm-card {
    min-width: 300px;
    max-width: 340px;
  }
}

/* ── Responsive: 1280px+ (desktop) ─────────────────────────────── */
@media (min-width: 1280px) {
  .shm-hero {
    padding: var(--space-4xl) var(--space-2xl);
  }
  .shm-track {
    padding: var(--space-sm) var(--space-2xl);
    justify-content: center;
  }
}

/* ── Responsive: 1440px+ (wide desktop) ────────────────────────── */
@media (min-width: 1440px) {
  .shm-track {
    max-width: 1360px;
    margin: 0 auto;
  }
}