body {
  font-family: 'Roboto', 'Lato', Arial, sans-serif;
  background: #f8fafc;
  color: #2c3e50;
  line-height: 1.6;
}

/* Couleurs scientifiques */
.bg-primary {
  background: linear-gradient(135deg, #1565c0, #1976d2) !important;
}

.text-primary {
  color: #1565c0 !important;
}

.border-primary {
  border-color: #1565c0 !important;
}

/* Sidebar */
.sidebar {
  background: linear-gradient(180deg, #1565c0 0%, #1976d2 100%);
  color: white;
  min-height: 100vh;
  padding: 2rem 1rem;
  box-shadow: 2px 0 10px rgba(0,0,0,0.1);
}

.sidebar-content {
  position: sticky;
  top: 2rem;
}

.sidebar .card {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(10px);
}

.sidebar .card-body {
  color: white;
}

.sidebar .text-primary {
  color: #ffd600 !important;
}

.sidebar .btn-outline-primary {
  border-color: rgba(255,255,255,0.3);
  color: white;
}

.sidebar .btn-outline-primary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
}

/* Navigation */
.navbar-dark .navbar-nav .nav-link.active, 
.navbar-dark .navbar-nav .nav-link:hover {
  color: #ffd600;
  background: rgba(255,255,255,0.1);
  border-radius: 5px;
}

/* Contenu principal */
.main-content {
  padding: 2rem;
  background: #fff;
  min-height: 100vh;
}

/* Cartes et stats */
.card {
  border-radius: 1rem;
  box-shadow: 0 4px 15px rgba(21,101,192,0.1);
  border: 1px solid #e3eaf3;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(21,101,192,0.15);
}

.stat-card {
  background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
  border-radius: 1rem;
  box-shadow: 0 4px 15px rgba(21,101,192,0.1);
  padding: 1.5rem 0.5rem;
  margin-bottom: 1rem;
  border: 1px solid #e3eaf3;
}

/* Timeline (about) */
.timeline {
  position: relative;
  margin-left: 1rem;
  margin-bottom: 1rem;
}

.timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.timeline-marker {
  position: absolute;
  left: -1rem;
  top: 0.3rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: #1565c0;
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px #1565c0;
}

/* Publication list */
.publication-list .card {
  border-left: 4px solid #1565c0;
  margin-bottom: 1.2rem;
}

/* Blockquote */
.blockquote {
  border-left: 4px solid #1565c0;
  background: linear-gradient(135deg, #f1f7fd 0%, #e3f2fd 100%);
  font-size: 1.1rem;
  border-radius: 0.5rem;
}

/* Icônes scientifiques */
.scientific-icon {
  background: linear-gradient(135deg, #1565c0, #1976d2);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.5rem;
}

/* Boutons */
.btn-primary {
  background: linear-gradient(135deg, #1565c0, #1976d2);
  border: none;
  border-radius: 0.5rem;
  padding: 0.5rem 1.5rem;
  transition: all 0.3s;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0d47a1, #1565c0);
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(21,101,192,0.3);
}

.btn-outline-primary {
  border-color: #1565c0;
  color: #1565c0;
  border-radius: 0.5rem;
}

.btn-outline-primary:hover {
  background: #1565c0;
  border-color: #1565c0;
}

/* Social links */
.social-links .btn {
  margin-bottom: 0.5rem;
  border-radius: 0.5rem;
}

/* Responsive */
@media (max-width: 767px) {
  .display-5, .display-6 {
    font-size: 2rem;
  }
  .stat-card {
    padding: 1rem 0.2rem;
  }
  .sidebar {
    min-height: auto;
    padding: 1rem;
  }
  .main-content {
    padding: 1rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card {
  animation: fadeInUp 0.6s ease-out;
}

/* Footer */
footer {
  background: linear-gradient(135deg, #eceff1 0%, #cfd8dc 100%) !important;
  color: #263238;
  border-top: 1px solid #b0bec5;
}