/* Research page — layered hero, motion, card interactions */

@keyframes research-fade-up {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes research-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.research-page__hero {
  position: relative;
  overflow: hidden;
}

.research-page__hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 85% 55% at 15% 15%, rgba(255, 253, 246, 0.14) 0%, transparent 52%),
    radial-gradient(ellipse 55% 45% at 92% 88%, rgba(184, 134, 11, 0.22) 0%, transparent 48%);
  pointer-events: none;
}

.research-page__hero-inner {
  position: relative;
  z-index: 1;
  max-width: 38rem;
  margin: 0 auto;
}

.research-page__hero-inner > * {
  opacity: 0;
  animation: research-fade-up 0.65s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.research-page__hero-inner > *:nth-child(1) {
  animation-delay: 0.05s;
}

.research-page__hero-inner > *:nth-child(2) {
  animation-delay: 0.14s;
}

.research-page__hero-inner > *:nth-child(3) {
  animation-delay: 0.24s;
}

.research-page__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.4rem 0.95rem;
  margin: 0 0 1rem;
  border-radius: 999px;
  background: rgba(255, 253, 246, 0.14);
  border: 1px solid rgba(255, 253, 246, 0.28);
  color: rgba(255, 253, 246, 0.95);
}

.research-page__eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 12px rgba(184, 134, 11, 0.75);
}

.research-page__hero .static-hero__title {
  font-size: clamp(1.85rem, 4.2vw, 2.5rem);
  line-height: 1.12;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.15);
}

.research-page__hero .static-hero__lead {
  font-size: clamp(1rem, 1.25vw, 1.1rem);
  line-height: 1.45;
  max-width: 28rem;
  margin-left: auto;
  margin-right: auto;
}

/* Intro strip */
.research-page__intro {
  position: relative;
  padding: 1.35rem 1.5rem;
  margin-bottom: 2.25rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(107, 142, 35, 0.08) 0%, rgba(245, 238, 220, 0.55) 100%);
  border: 1px solid rgba(224, 216, 192, 0.85);
  box-shadow: 0 12px 40px -28px rgba(46, 50, 16, 0.35);
  transition: box-shadow 0.35s ease, transform 0.35s ease;
}

.research-page__intro:hover {
  box-shadow: 0 18px 48px -22px rgba(46, 50, 16, 0.42);
  transform: translateY(-2px);
}

.research-page__intro p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.65;
}

.research-page__intro a {
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid rgba(107, 142, 35, 0.35);
  transition: color 0.2s, border-color 0.2s;
}

.research-page__intro a:hover {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-dark);
}

/* Featured invention card */
.research-page__feature {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(46, 50, 16, 0.95) 0%, rgba(76, 90, 28, 0.92) 60%, rgba(120, 87, 4, 0.88) 100%);
  color: #fffdf6;
  text-decoration: none;
  overflow: hidden;
  box-shadow: 0 24px 56px -28px rgba(46, 50, 16, 0.55);
  transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.35s ease;
}

.research-page__feature::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 55% 50% at 90% 90%, rgba(184, 134, 11, 0.35) 0%, transparent 60%);
  pointer-events: none;
}

.research-page__feature:hover {
  transform: translateY(-4px);
  box-shadow: 0 32px 64px -24px rgba(46, 50, 16, 0.65);
}

.research-page__feature-text {
  position: relative;
  z-index: 1;
}

.research-page__feature-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 253, 246, 0.16);
  border: 1px solid rgba(255, 253, 246, 0.28);
  color: rgba(255, 253, 246, 0.95);
  margin-bottom: 0.85rem;
}

.research-page__feature h3 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 800;
  line-height: 1.22;
  margin: 0 0 0.65rem;
  color: #fffdf6;
}

.research-page__feature p {
  margin: 0 0 0.95rem;
  font-size: 0.93rem;
  line-height: 1.65;
  color: rgba(255, 253, 246, 0.88);
}

.research-page__feature-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  transition: transform 0.25s ease, color 0.25s ease;
}

.research-page__feature:hover .research-page__feature-cta {
  transform: translateX(4px);
  color: #f3c66a;
}

.research-page__feature-media {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  box-shadow: 0 18px 40px -22px rgba(0, 0, 0, 0.5);
}

.research-page__feature-media .research-page__thumb-frame {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
}

@media (min-width: 820px) {
  .research-page__feature {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 2rem;
    padding: 1.75rem 1.85rem;
    align-items: center;
  }
}

/* Section rhythm */
.research-page .research-page__section {
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: research-fade-in 0.75s ease forwards;
  animation-fill-mode: both;
}

.research-page .research-page__section:nth-of-type(1) {
  animation-delay: 0.12s;
}

.research-page .research-page__section:nth-of-type(2) {
  animation-delay: 0.2s;
}

.research-page .research-page__section:nth-of-type(3) {
  animation-delay: 0.28s;
}

.research-page .research-page__section:nth-of-type(4) {
  animation-delay: 0.36s;
}

.research-page .static-section h2 {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: clamp(1.2rem, 2vw, 1.35rem);
  padding-bottom: 0.35rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid rgba(107, 142, 35, 0.35);
}

/* Category cards + AI thumbnails */
.research-page .research-page__category-grid {
  gap: 1.25rem;
}

.research-page .research-page__category-card {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.research-page .research-page__category-card::before {
  display: none;
}

.research-page .values-card {
  position: relative;
  overflow: hidden;
  transition:
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.35s ease,
    border-color 0.25s ease;
  border-color: rgba(224, 216, 192, 0.95);
}

.research-page .values-card:not(.research-page__category-card)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.research-page .values-card:hover {
  transform: translateY(-5px);
  box-shadow:
    0 20px 44px -24px rgba(46, 50, 16, 0.45),
    0 0 0 1px rgba(107, 142, 35, 0.12);
  border-color: rgba(107, 142, 35, 0.35);
}

.research-page .values-card:not(.research-page__category-card):hover::before {
  opacity: 1;
}

.research-page__thumb-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(107, 142, 35, 0.18) 0%, rgba(245, 238, 220, 0.55) 100%);
}

.research-page__thumb {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.03);
  transition:
    opacity 0.55s ease,
    transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.research-page__thumb.is-loaded {
  opacity: 1;
}

.research-page__category-card:hover .research-page__thumb.is-loaded {
  transform: scale(1.07);
}

.research-page__category-head {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 1rem 1.25rem 0;
}

.research-page__category-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(107, 142, 35, 0.14);
  color: var(--color-primary-dark);
  transition:
    background 0.3s ease,
    color 0.25s ease,
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.research-page__category-card:hover .research-page__category-icon {
  background: rgba(107, 142, 35, 0.24);
  color: var(--color-primary);
  transform: scale(1.06);
}

.research-page .research-page__category-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  flex: 1;
  color: var(--color-primary-dark);
  transition: color 0.25s ease;
}

.research-page .research-page__category-card:hover h3 {
  color: var(--color-primary);
}

.research-page .research-page__category-card > p {
  padding: 0.55rem 1.25rem 1.25rem;
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Current research pillars */
.research-page__pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
  gap: 1rem;
}

.research-page__pillar {
  position: relative;
  padding: 1.15rem 1.25rem 1.25rem 1.35rem;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  transition:
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.35s ease,
    border-color 0.25s ease;
}

.research-page__pillar::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  bottom: 1rem;
  width: 3px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-primary));
}

.research-page__pillar:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px -18px rgba(46, 50, 16, 0.4);
  border-color: rgba(107, 142, 35, 0.4);
}

.research-page__pillar-head {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.55rem;
}

.research-page__pillar-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(107, 142, 35, 0.12);
  color: var(--color-primary);
  transition:
    background 0.3s ease,
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.research-page__pillar:hover .research-page__pillar-icon {
  background: rgba(107, 142, 35, 0.22);
  transform: scale(1.06);
}

.research-page__pillar-label {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.research-page__pillar p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

/* Upcoming note */
.research-page__note {
  padding: 1.25rem 1.35rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 253, 246, 0.95) 0%, rgba(248, 241, 222, 0.9) 100%);
  border: 1px dashed rgba(107, 142, 35, 0.45);
  transition: border-color 0.3s ease, background 0.3s ease;
}

.research-page__note:hover {
  border-color: rgba(107, 142, 35, 0.65);
  background: linear-gradient(180deg, #fffdf6 0%, #f5eedc 100%);
}

.research-page__note p {
  margin: 0 0 0.85rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--color-text);
}

.research-page__note p:last-child {
  margin-bottom: 0;
}

/* Footer links */
.research-page__footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.research-page__footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-primary-dark);
  text-decoration: none;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(107, 142, 35, 0.35);
  background: rgba(255, 253, 246, 0.65);
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.research-page__footer-links a:hover {
  transform: translateY(-2px);
  background: rgba(107, 142, 35, 0.12);
  border-color: var(--color-primary);
  box-shadow: 0 8px 20px -12px rgba(46, 50, 16, 0.35);
}

@media (prefers-reduced-motion: reduce) {
  .research-page__hero-inner > *,
  .research-page .research-page__section,
  .research-page .values-card,
  .research-page__pillar,
  .research-page__intro {
    animation: none !important;
    opacity: 1 !important;
    transition: none !important;
  }

  .research-page .values-card:hover,
  .research-page__pillar:hover,
  .research-page__intro:hover,
  .research-page__footer-links a:hover {
    transform: none;
  }

  .research-page__thumb {
    opacity: 1 !important;
    transform: none !important;
  }
}