/* Base Styles & Animations */
body {
  font-family: "Inter", sans-serif;
}

.hero-bg {
  background-image:
    linear-gradient(rgba(5, 46, 22, 0.8), rgba(5, 46, 22, 0.9)),
    url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?q=80&w=2072&auto=format&fit=crop");
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* SPA Page Transition */
.page-view {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease;
}

/* Marquee Animation */
@keyframes marquee {
  0% {
    transform: translateX(0%);
  }
  100% {
    transform: translateX(-50%);
  }
}

.marquee-wrapper {
  width: 100%;
  overflow: hidden;
  padding: 0;
}

.marquee-track {
  display: flex;
  gap: 2rem;
  padding: 1rem;
  animation: marquee 40s linear infinite;
  min-width: max-content;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@media (max-width: 640px) {
  .marquee-track {
    gap: 1rem;
    animation-duration: 25s;
  }
}

/* Partner Card Styling */
.partner-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: white;
  border: 2px solid transparent;
  border-radius: 0.75rem;
  /* box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08); */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 150px;
  cursor: pointer;
  flex-shrink: 0;
}

.partner-card:hover {
  /* border-color: #16a34a; */
  /* box-shadow: 0 8px 16px rgba(22, 163, 74, 0.15); */
  transform: translateY(-4px);
  /* background: linear-gradient(
    135deg,
    rgba(220, 252, 231, 0.5),
    rgba(187, 247, 208, 0.5)
  ); */
}

.partner-card .partner-logo {
  width: 4rem;
  height: 4rem;
  border-radius: 0.5rem;
  object-fit: contain;
  filter: grayscale(80%);
  opacity: 0.75;
  transition:
    filter 0.3s ease,
    opacity 0.3s ease;
}

.partner-card:hover .partner-logo {
  filter: grayscale(0%);
  opacity: 1;
}

.partner-card .partner-name {
  margin-top: 0.75rem;
  font-weight: 600;
  color: #374151;
  font-size: 0.75rem;
  text-align: center;
  display: block;
  transition: color 0.3s ease;
  line-height: 1.3;
}

.partner-card:hover .partner-name {
  color: #15803d;
}

@media (max-width: 640px) {
  .partner-card {
    min-width: 120px;
    padding: 1rem;
  }

  .partner-card .partner-logo {
    width: 3rem;
    height: 3rem;
  }

  .partner-card .partner-name {
    font-size: 0.65rem;
  }
}

.page-view.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Publication Card Hover */
.pub-card {
  transition: all 0.2s ease-in-out;
}

.pub-card:hover {
  transform: translateY(-2px);
  border-color: #bbf7d0;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Full-row expansion for active theme cards */
.theme-card:has(details[open]) {
  grid-column: 1 / -1;
  background-color: #f9fafb;
  border-color: #16a34a;
}

/* Multi-column grid for subthemes & papers when expanded */
.theme-card:has(details[open]) .accordion-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}