/* ==========================================================================
   Zim Zam Labs — Page CSS: INGREDIENTS
   Adds: ingredient feature spread (alternating left/right)
   Reuses: science-hero, chapter, pullquote-display, capture
   ========================================================================== */

/* science-hero base (page-science.css not loaded here) */
.science-hero {
  position: relative;
  background: var(--ink-800);
  color: var(--text-on-dark);
  overflow: hidden;
  padding-top: clamp(7rem, 5rem + 6vw, 10rem);
  padding-bottom: clamp(4.5rem, 3rem + 5vw, 7rem);
  text-align: center;
}
.science-hero__inner {
  padding-inline: var(--gutter);
}

/* Lead paragraph — constrain line length (page-science.css not loaded here) */
.science-hero__lead {
  max-width: 56ch;
  margin-inline: auto;
}

/* Hero quote variant */
.science-hero__quote {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: var(--text-body-lg);
  line-height: 1.5;
  color: var(--text-on-dark);
  max-width: 60ch;
  margin-inline: auto;
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--ink-line);
}
.science-hero__quote cite {
  display: block;
  margin-top: var(--space-sm);
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-400);
}

/* ==========================================================================
   INGREDIENT FEATURE — full-bleed alternating image/content spread
   ========================================================================== */
.ing-feature {
  position: relative;
  background: var(--cream-100);
  color: var(--text-on-cream);
  padding-block: var(--space-section);
  overflow: hidden;
}
.ing-feature--alt {
  background: var(--ink-900);
  color: var(--text-on-dark);
}
.ing-feature--alt::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 800px 600px at 20% 30%, rgba(78, 197, 232, 0.08), transparent 60%),
    radial-gradient(ellipse 700px 600px at 80% 80%, rgba(233, 196, 106, 0.07), transparent 55%);
  pointer-events: none;
}
.ing-feature--hero {
  background: var(--cream-50);
  padding-block: var(--space-section-lg);
  border-bottom: 1px solid var(--cream-400);
}

.ing-feature__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: center;
}
@media (max-width: 920px) {
  .ing-feature__inner { grid-template-columns: 1fr; gap: var(--space-xl); }
}
.ing-feature--reverse .ing-feature__inner { direction: rtl; }
.ing-feature--reverse .ing-feature__inner > * { direction: ltr; }
@media (max-width: 920px) {
  .ing-feature--reverse .ing-feature__inner { direction: ltr; }
}

/* Image side */
.ing-feature__image {
  position: relative;
  aspect-ratio: 4/4.4;
  max-height: 620px;
  background: var(--cream-200);
  border: 1px solid var(--cream-400);
  overflow: hidden;
}
.ing-feature--alt .ing-feature__image {
  background: var(--ink-700);
  border: 1px solid var(--ink-line);
}
.ing-feature__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: contrast(1.04) saturate(0.95);
}
.ing-feature--alt .ing-feature__image img {
  filter: brightness(0.92) contrast(1.08) saturate(0.9);
}
.ing-feature__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.25) 100%);
  pointer-events: none;
}
.ing-feature__image-tag {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  padding: 0.4rem 0.625rem;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--ink-line);
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-400);
  z-index: 2;
}

/* Content side */
.ing-feature__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}
.ing-feature__num {
  font-family: var(--font-mono);
  font-size: var(--text-label);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-700);
}
.ing-feature--alt .ing-feature__num { color: var(--gold-400); }

.ing-feature__name {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: 0.94;
  letter-spacing: -0.04em;
  color: var(--ink-900);
  font-variation-settings: "opsz" 144, "SOFT" 50, "WONK" 1;
  margin: 0;
  text-wrap: balance;
}
.ing-feature--alt .ing-feature__name { color: var(--cream-50); }
.ing-feature__name em {
  font-family: var(--font-italic);
  font-style: italic;
  color: var(--gold-600);
}
.ing-feature--alt .ing-feature__name em { color: var(--gold-400); }

.ing-feature__formula {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  color: var(--gold-700);
  letter-spacing: 0.04em;
  padding: 0.35rem 0.625rem;
  background: rgba(184, 135, 68, 0.08);
  border: 1px solid rgba(184, 135, 68, 0.35);
}
.ing-feature--alt .ing-feature__formula {
  color: var(--gold-400);
  background: rgba(233, 196, 106, 0.06);
  border-color: rgba(233, 196, 106, 0.25);
}
.ing-feature__formula sub { font-size: 0.78em; }
.ing-feature__formula sup { font-size: 0.78em; }

.ing-feature__role {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: var(--text-lead);
  line-height: 1.4;
  color: var(--ink-900);
  margin-top: var(--space-xs);
  margin-bottom: var(--space-md);
}
.ing-feature--alt .ing-feature__role { color: var(--cream-50); }

.ing-feature__body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--lh-prose);
  color: var(--text-on-cream-muted);
  max-width: 60ch;
}
.ing-feature--alt .ing-feature__body { color: var(--text-on-dark-muted); }
.ing-feature__body p { margin-bottom: var(--space-md); }
.ing-feature__body p.emphatic {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: var(--text-body-lg);
  color: var(--ink-900);
  padding-top: var(--space-sm);
  margin-top: var(--space-sm);
  border-top: 1px solid var(--cream-400);
}
.ing-feature--alt .ing-feature__body p.emphatic {
  color: var(--cream-50);
  border-top-color: var(--ink-line);
}

/* ==========================================================================
   MOBILE
   ========================================================================== */
@media (max-width: 640px) {
  .science-hero { padding-top: clamp(5rem, 3.5rem + 6vw, 7rem); padding-bottom: clamp(3rem, 2rem + 4vw, 5rem); }
  .science-hero__quote { font-size: clamp(1rem, 0.85rem + 0.8vw, 1.15rem); line-height: 1.6; padding-top: var(--space-sm); margin-top: var(--space-md); }
  .science-hero__quote cite { font-size: 0.75rem; }

  .ing-feature {
    padding-block: clamp(2.5rem, 1.5rem + 5vw, 4.5rem);
  }
  .ing-feature--hero { padding-block: clamp(2.5rem, 1.5rem + 5vw, 5rem); }
  .ing-feature__inner { gap: var(--space-lg); }
  .ing-feature__image { max-height: 480px; }
  .ing-feature__image-tag { font-size: 0.5625rem; padding: 0.3rem 0.5rem; }

  .ing-feature__num { font-size: 0.625rem; }
  .ing-feature__name {
    font-size: clamp(2rem, 1.5rem + 4vw, 2.75rem);
    line-height: 1;
  }
  .ing-feature__formula { font-size: 0.6875rem; padding: 0.25rem 0.5rem; }
  .ing-feature__role { font-size: 1.0625rem; margin-bottom: var(--space-sm); }
  .ing-feature__body { font-size: 1rem; }
  .ing-feature__body p.emphatic { font-size: 1.0625rem; }
}