:root {
  --primary-color: #2E7D32;
  --secondary-color: #4CAF50;
  --accent-color: #81C784;
  --background-dark: #121212;
  --background-darker: #0A0A0A;
  --surface-dark: #1E1E1E;
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0B0;
  --text-summary: #718096;
  --border-color: #333333; }

body {
  background-color: var(--background-dark) !important;
  color: var(--text-primary) !important; }

.navbar {
  background-color: var(--background-darker) !important;
  border-bottom: 1px solid var(--border-color); }
  .navbar .navbar-brand {
    color: var(--primary-color) !important;
    font-weight: 700; }
  .navbar .navbar-nav .nav-link {
    color: var(--text-primary) !important;
    transition: color 0.3s ease; }
    .navbar .navbar-nav .nav-link:hover {
      color: var(--secondary-color) !important; }

.hero-title {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800; }

.card, .block {
  background-color: var(--surface-dark) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease; }
  .card:hover, .block:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(46, 125, 50, 0.2); }

.project-card {
  background: linear-gradient(145deg, var(--surface-dark), #252525);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease; }
  .project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(46, 125, 50, 0.3);
    border-color: var(--primary-color); }
  .project-card .project-image {
    position: relative;
    overflow: hidden; }
    .project-card .project-image::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(45deg, rgba(46, 125, 50, 0.1), rgba(76, 175, 80, 0.1));
      opacity: 0;
      transition: opacity 0.3s ease; }
    .project-card .project-image:hover::after {
      opacity: 1; }

.publication-item {
  background-color: var(--surface-dark);
  border-left: 4px solid var(--primary-color);
  padding: 1.5rem;
  margin-bottom: 1rem;
  border-radius: 0 8px 8px 0; }
  .publication-item .publication-title {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem; }
  .publication-item .publication-authors {
    color: var(--text-secondary);
    font-style: italic; }
  .publication-item .publication-venue {
    color: var(--secondary-color);
    font-weight: 500; }

.person-card {
  background: var(--surface-dark);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color); }
  .person-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 25px rgba(46, 125, 50, 0.2);
    border-color: var(--secondary-color); }
  .person-card .person-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid var(--primary-color);
    margin: 0 auto 1rem;
    overflow: hidden; }
    .person-card .person-avatar img {
      width: 100%;
      height: 100%;
      object-fit: cover; }
  .person-card .person-name {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem; }
  .person-card .person-role {
    color: var(--secondary-color);
    font-weight: 500;
    margin-bottom: 1rem; }

.news-item {
  background-color: var(--surface-dark);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease; }
  .news-item:hover {
    transform: translateX(8px);
    border-color: var(--primary-color);
    box-shadow: -4px 0 15px rgba(46, 125, 50, 0.2); }
  .news-item .news-date {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 0.9rem; }
  .news-item .news-title {
    color: var(--text-primary);
    font-weight: 600;
    margin: 0.5rem 0; }
  .news-item .news-excerpt {
    color: var(--text-secondary);
    line-height: 1.6; }

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border: none;
  border-radius: 8px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  transition: all 0.3s ease; }
  .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 125, 50, 0.4); }

.btn-outline {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background: transparent;
  border-radius: 8px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  transition: all 0.3s ease; }
  .btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px); }

.footer {
  background-color: var(--background-darker) !important;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary); }
  .footer a {
    color: var(--secondary-color);
    transition: color 0.3s ease; }
    .footer a:hover {
      color: var(--accent-color); }

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px); }
  to {
    opacity: 1;
    transform: translateY(0); } }

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out; }

@media (max-width: 768px) {
  .person-card {
    padding: 1.5rem; }
  .project-card {
    margin-bottom: 2rem; }
  .hero-title {
    font-size: 2.5rem; } }

::-webkit-scrollbar {
  width: 8px; }

::-webkit-scrollbar-track {
  background: var(--background-dark); }

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px; }

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color); }