/* Hero Section - Vibrant Gradient */
.hero-section {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  background: linear-gradient(120deg, #a1c4fd 0%, #c2e9fb 50%, #fbc2eb 100%);
  /* Alternative modern gradients - choose one: */
  /* Sunset: linear-gradient(120deg, #f093fb 0%, #f5576c 100%); */
  /* Ocean: linear-gradient(120deg, #89f7fe 0%, #66a6ff 100%); */
  /* Purple Rain: linear-gradient(120deg, #a8edea 0%, #fed6e3 100%); */
  /* Peachy: linear-gradient(120deg, #ff9a9e 0%, #fecfef 50%, #ffdde1 100%); */
  
  color: white;
  padding: 70px 20px;
  margin: -20px -15px 40px;
  border-radius: 0 0 12px 12px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.hero-content h2 {
  font-size: 2.5em;
  font-weight: 800;
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.hero-content .lead {
  font-size: 1.4em;
  font-weight: 600;
  margin-bottom: 15px;
  opacity: 0.95;
}

.hero-content p {
  font-size: 1.15em;
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto 35px;
  opacity: 0.9;
}

.profile-photo-container {
  margin-bottom: 30px;
  animation: fadeInDown 0.8s ease-out;
}

.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 5px solid white;
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
  object-fit: cover;
  transition: all 0.4s ease;
}

.profile-photo:hover {
  transform: scale(1.08) rotate(2deg);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}

.cta-buttons {
  margin-top: 30px;
}

.cta-buttons .btn {
  margin: 8px 12px;
  padding: 14px 35px;
  font-size: 1.1em;
  font-weight: 600;
  border-radius: 30px;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.btn-primary {
  background-color: white;
  color: #f5576c;
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.btn-outline {
  border: 2px solid white;
  color: white;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: white;
  color: #f5576c;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

/* News Section - Modern Design */
.news-section {
  margin: 50px 0;
  padding: 40px;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.news-section h2 {
  color: #2C3E50;
  font-size: 2em;
  font-weight: 800;
  margin-bottom: 30px;
  padding-bottom: 15px;
  border-bottom: 4px solid #f5576c;
  display: inline-block;
}

.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.news-list li {
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 10px;
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.news-list li:hover {
  transform: translateX(10px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.news-icon {
  font-size: 2em;
  flex-shrink: 0;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.news-content {
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
}

.news-date {
  font-weight: 700;
  color: #f5576c;
  font-size: 0.95em;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.news-item {
  color: #34495E;
  line-height: 1.7;
  font-size: 1.05em;
}

/* Research Highlights Section - Card Grid */
.research-highlights {
  margin: 60px 0;
}

.research-highlights h2 {
  color: #2C3E50;
  font-size: 2em;
  font-weight: 800;
  margin-bottom: 35px;
  padding-bottom: 15px;
  border-bottom: 4px solid #667eea;
  display: inline-block;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.highlight-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 35px 25px;
  border-radius: 12px;
  text-align: center;
  color: white;
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
}

.highlight-card:nth-child(2) {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.highlight-card:nth-child(3) {
  background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.highlight-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.highlight-icon {
  font-size: 4em;
  margin-bottom: 20px;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.highlight-card h3 {
  font-size: 1.5em;
  font-weight: 700;
  margin-bottom: 15px;
  color: white;
}

.highlight-card p {
  font-size: 1.05em;
  line-height: 1.6;
  opacity: 0.95;
  color: white;
}

/* Publications Page Enhancements */
.publication-item {
  margin-bottom: 35px;
  padding: 25px;
  background: white;
  border-left: 5px solid #f5576c;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
}

.publication-item:hover {
  box-shadow: 0 6px 25px rgba(0,0,0,0.15);
  transform: translateX(8px);
  border-left-color: #667eea;
}

.publication-title {
  font-size: 1.4em;
  font-weight: 700;
  color: #2C3E50;
  margin-bottom: 12px;
  line-height: 1.4;
}

.publication-authors {
  color: #7F8C8D;
  font-style: italic;
  margin-bottom: 10px;
  font-size: 1.05em;
}

.publication-venue {
  color: #f5576c;
  font-weight: 600;
  margin-bottom: 15px;
  font-size: 1.05em;
}

.publication-links a {
  display: inline-block;
  margin-right: 15px;
  padding: 8px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-decoration: none;
  border-radius: 20px;
  font-size: 0.95em;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.publication-links a:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Typography Improvements */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: #2C3E50;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Navigation Bar Polish */
.navbar {
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.4em;
}

/* Footer Improvements */
.footer {
  margin-top: 80px;
  padding: 40px 0;
  border-top: 3px solid #E9ECEF;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-content h2 {
    font-size: 1.8em;
  }
  
  .news-list li {
    flex-direction: row;
    align-items: flex-start;
  }
  
  .news-icon {
    font-size: 1.5em;
  }
  
  .highlight-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-buttons .btn {
    display: block;
    margin: 10px auto;
    max-width: 280px;
  }
}

/* Add smooth scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Fun hover effects for links */
a {
  transition: all 0.3s ease;
}

/* Badge/Tag styles for keywords */
.tag {
  display: inline-block;
  padding: 5px 12px;
  margin: 3px;
  background: linear-gradient(135deg, #667eea 0%, #764