/* Base Layout & Micro-animations */
.pub-hero {
  position: relative;
  padding: 120px 0 80px;
  overflow: hidden;
}

.pub-hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle at center,
    rgba(var(--primary-rgb), 0.1) 0%,
    transparent 50%
  );
  pointer-events: none;
  z-index: 0;
}

.pub-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Search Bar Glassmorphism */
.search-wrapper {
  position: relative;
  max-width: 600px;
  margin: 0 auto 60px;
}

.search-input {
  width: 100%;
  padding: 20px 24px 20px 60px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 99px;
  color: var(--on-surface);
  font-size: 1.125rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(var(--primary-rgb), 0.5);
  box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
}

.search-icon {
  position: absolute;
  left: 24px;
  top: 50%;
  transform: translateY(-50%);
  color: rgba(255, 255, 255, 0.5);
  font-size: 1.5rem;
  pointer-events: none;
}

/* Article Cards */
.pub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 32px;
}

.pub-card {
  display: flex;
  flex-direction: column;
  padding: 32px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  text-decoration: none;
  color: inherit;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.pub-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #60a5fa, #3b82f6, #2563eb);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.pub-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

.pub-card:hover::before {
  transform: scaleX(1);
}

.pub-title {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: #f8fafc;
}

.pub-authors {
  font-size: 0.875rem;
  color: #94a3b8;
  margin-bottom: 24px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}

.pub-abstract {
  font-size: 0.9375rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 32px;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pub-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.read-more {
  font-size: 0.875rem;
  font-weight: 500;
  color: #60a5fa;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.3s ease;
}

.pub-card:hover .read-more {
  gap: 12px;
}

.read-more-icon {
  font-size: 1.125rem;
}

/* Load More Button */
.load-more-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 64px;
}

.btn-load-more {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 16px 40px;
  border-radius: 99px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(8px);
}

.btn-load-more:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.btn-load-more:active {
  transform: translateY(0);
}

.btn-load-more.hidden {
  display: none;
}

.loader {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

.loader-small {
  width: 16px;
  height: 16px;
  border-width: 2px;
  margin-left: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Header Gradients */
.text-gradient {
  background: linear-gradient(135deg, #f8fafc 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}