/* ========================================================================
   Green University — Interactive Modules
   AI Smart Search · Research Showcase · Scroll Storytelling
   ======================================================================== */

/* ========== 1. AI SMART SEARCH — Suggestions Dropdown ========== */
.grnu-header__search {
  position: relative;
}

.grnu-header__search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.5rem;
  background: var(--grnu-white);
  border-radius: var(--grnu-radius-sm);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  max-height: 320px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.25s var(--grnu-ease), transform 0.25s var(--grnu-ease), visibility 0.25s;
  z-index: 1100;
}

.grnu-header__search-suggestions.grnu-header__search-suggestions--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.grnu-search-suggestion__category {
  padding: 0.5rem 1rem;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--grnu-text-muted);
  background: var(--grnu-bg);
}

.grnu-search-suggestion__item {
  display: block;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  color: var(--grnu-text);
  text-decoration: none;
  transition: background 0.2s;
  border-bottom: 1px solid var(--grnu-border);
}

.grnu-search-suggestion__item:last-child { border-bottom: none; }

.grnu-search-suggestion__item:hover,
.grnu-search-suggestion__item:focus-visible {
  background: rgba(15, 106, 68, 0.06);
  color: var(--grnu-primary);
}

.grnu-search-suggestion__item strong { color: var(--grnu-primary); }

.grnu-search-suggestion__empty {
  padding: 1.5rem 1rem;
  text-align: center;
  font-size: 0.9375rem;
  color: var(--grnu-text-muted);
}

/* ========== 2. RESEARCH & INNOVATION — Modern Cards ========== */
.grnu-research-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.grnu-research-showcase__card {
  background: var(--grnu-white);
  border-radius: var(--grnu-radius);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.35s var(--grnu-ease), box-shadow 0.35s var(--grnu-ease);
  text-decoration: none;
  color: inherit;
  display: block;
  border: 1px solid var(--grnu-border);
}

.grnu-research-showcase__card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(15, 106, 68, 0.15);
}

.grnu-research-showcase__media {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.grnu-research-showcase__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--grnu-ease);
}

.grnu-research-showcase__card:hover .grnu-research-showcase__media img {
  transform: scale(1.05);
}

.grnu-research-showcase__body {
  padding: 1.5rem;
}

.grnu-research-showcase__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  color: var(--grnu-text);
  transition: color 0.25s;
}

.grnu-research-showcase__card:hover .grnu-research-showcase__title { color: var(--grnu-primary); }

.grnu-research-showcase__desc {
  font-size: 0.9375rem;
  color: var(--grnu-text-muted);
  line-height: 1.55;
  margin: 0 0 1rem;
}

.grnu-research-showcase__link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--grnu-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap 0.25s, transform 0.25s;
}

.grnu-research-showcase__card:hover .grnu-research-showcase__link { gap: 0.5rem; }

.grnu-research-showcase__link::after {
  content: '→';
}

@media (max-width: 768px) {
  .grnu-research-showcase { grid-template-columns: 1fr; }
}

/* ========== 3. APPLE-STYLE SCROLL STORYTELLING ========== */
.grnu-story-section {
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: var(--grnu-section-padding) 0;
  position: relative;
  overflow: hidden;
}

.grnu-story-section:nth-child(even) { background: var(--grnu-bg); }

.grnu-story-section__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.grnu-story-section:nth-child(even) .grnu-story-section__inner {
  direction: rtl;
}

.grnu-story-section:nth-child(even) .grnu-story-section__content,
.grnu-story-section:nth-child(even) .grnu-story-section__media { direction: ltr; }

.grnu-story-section__content {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--grnu-ease), transform 0.8s var(--grnu-ease);
}

.grnu-story-section.grnu-story-section--visible .grnu-story-section__content {
  opacity: 1;
  transform: translateY(0);
}

.grnu-story-section__media {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.8s var(--grnu-ease) 0.15s, transform 0.8s var(--grnu-ease) 0.15s;
}

.grnu-story-section.grnu-story-section--visible .grnu-story-section__media {
  opacity: 1;
  transform: scale(1);
}

.grnu-story-section__media-inner {
  border-radius: var(--grnu-radius);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.12);
}

.grnu-story-section__media img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: bottom;
}

.grnu-story-section__title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--grnu-text);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.grnu-story-section__desc {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--grnu-text-muted);
  margin: 0;
}

@media (max-width: 992px) {
  .grnu-story-section__inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .grnu-story-section:nth-child(even) .grnu-story-section__inner { direction: ltr; }
}

@media (max-width: 576px) {
  .grnu-story-section { min-height: auto; padding: 4rem 0; }
}

/* ========== 4. MICRO ANIMATIONS ========== */
.grnu-btn {
  transition: transform 0.25s var(--grnu-ease), box-shadow 0.25s var(--grnu-ease), background 0.25s var(--grnu-ease);
}

.grnu-btn:active { transform: translateY(-1px) scale(0.98); }

.grnu-faculty-card,
.grnu-campus-card,
.grnu-news-card {
  transition: transform 0.35s var(--grnu-ease), box-shadow 0.35s var(--grnu-ease);
}

.grnu-faculty-card:hover,
.grnu-campus-card:hover {
  box-shadow: var(--grnu-shadow-hover);
}