/* Variables CSS pour la cohérence */
:root {
  --primary-color: #1e293b;
  --secondary-color: #334155;
  --accent-color: #475569;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-accent: #f1f5f9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --gradient-primary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  --gradient-secondary: linear-gradient(135deg, #475569 0%, #64748b 100%);
  --gradient-accent: linear-gradient(135deg, #64748b 0%, #94a3b8 100%);
  --background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

/* Reset et base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* Typographie */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--primary-color);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-color);
  background-color: var(--bg-accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 4px;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background-color: var(--primary-color);
  transition: all 0.3s ease;
}

/* Section Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.8) 0%, rgba(248,250,252,0.9) 100%);
}

@keyframes float {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}

.hero-text {
  color: var(--text-primary);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  animation: slideInUp 1s ease-out;
  color: var(--primary-color);
}

.title-highlight {
  color: var(--primary-color);
}

.hero-subtitle {
  font-size: 1.3rem;
  font-weight: 500;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  animation: slideInUp 1s ease-out 0.2s both;
}

.hero-description {
  font-size: 1rem;
  margin-bottom: 2rem;
  color: var(--text-secondary);
  animation: slideInUp 1s ease-out 0.4s both;
}

.hero-tags {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  animation: slideInUp 1s ease-out 0.6s both;
}

.tag {
  background: var(--bg-primary);
  padding: 0.4rem 0.9rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 400;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.hero-cta {
  display: flex;
  gap: 1rem;
  animation: slideInUp 1s ease-out 0.8s both;
}

.btn {
  padding: 0.65rem 1.5rem;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--primary-color);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--secondary-color);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.hero-image {
  display: flex;
  justify-content: center;
  animation: slideInRight 1s ease-out 0.5s both;
}

.image-placeholder {
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  border: 3px solid rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.image-placeholder::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: rotate(45deg);
  transition: all 0.3s ease;
  opacity: 0;
}

.image-placeholder:hover::before {
  opacity: 1;
  animation: shimmer 1.5s ease-in-out;
}

@keyframes shimmer {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.image-placeholder:hover {
  transform: scale(1.05);
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.image-placeholder i {
  font-size: 4rem;
  color: white;
  margin-bottom: 1rem;
  z-index: 2;
  position: relative;
}

.image-placeholder p {
  color: white;
  font-weight: 500;
  z-index: 2;
  position: relative;
  text-align: center;
  font-size: 0.9rem;
}

/* Style pour une vraie photo (à utiliser quand vous ajouterez votre photo) */
.hero-image img {
  width: 350px;
  height: 500px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.3);
  transition: all 0.3s ease;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-image img:hover {
  transform: scale(1.05);
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Sections génériques */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Section À propos avec hero fusionné */
.about-hero {
  padding-top: 100px;
  padding-bottom: 4rem;
  background: var(--bg-secondary);
}

.about-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
}

.about-photo {
  position: relative;
}

.photo-wrapper {
  width: 180px;
  height: 180px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-primary);
  border: 3px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.photo-wrapper i {
  font-size: 4rem;
  color: var(--text-light);
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

.about-info h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.about-title {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}

.about-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all 0.3s ease;
  text-decoration: none;
}

.social-links a:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.social-links i {
  font-size: 1.3rem;
}

.bluesky-icon {
  width: 20px;
  height: 20px;
}

.about-tags {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Section À propos */
.about-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.about-text p {
  margin-bottom: 1.5rem;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stat {
  text-align: center;
  padding: 1.5rem;
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.stat:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--gradient-primary);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  padding-left: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--accent-color);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: var(--shadow-md);
}

.timeline-date {
  font-weight: 600;
  color: var(--accent-color);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.timeline-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.timeline-company {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.education {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-color);
}

.education-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.education-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.education-item i {
  font-size: 2rem;
  color: var(--accent-color);
}

.education-item h4 {
  margin-bottom: 0.25rem;
}

/* Publications */
.publications-grid {
  display: grid;
  gap: 2rem;
}

.publication-card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border-left: 4px solid var(--accent-color);
}

.publication-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.publication-year {
  display: inline-block;
  background: var(--bg-accent);
  color: var(--accent-color);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.publication-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.publication-journal {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.publication-links {
  display: flex;
  gap: 1rem;
}

.publication-link {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
}

.publication-link:hover {
  color: var(--secondary-color);
}

/* Boutons de section CTA */
.section-cta {
  text-align: center;
  margin-top: 3rem;
}

.section-cta .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-size: 1rem;
}

/* Projets */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.project-header h3 {
  font-size: 1.3rem;
  color: var(--primary-color);
}

.project-links {
  display: flex;
  gap: 0.75rem;
}

.project-links a {
  color: var(--text-secondary);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.project-links a:hover {
  color: var(--accent-color);
  transform: scale(1.1);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tech-tag {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
}

/* Compétences */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.skill-category {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.skill-category:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.skill-category h3 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-size: 1.2rem;
}

.skill-category i {
  color: var(--accent-color);
  font-size: 1.3rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-item {
  background: var(--bg-accent);
  color: var(--accent-color);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
}

.skill-item:hover {
  transform: scale(1.05);
  background: var(--accent-color);
  color: white;
}

/* Responsabilités */
.responsibilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.responsibility-card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  border-left: 4px solid var(--accent-color);
}

.responsibility-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.responsibility-card h3 {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
  font-size: 1.2rem;
}

.responsibility-card i {
  color: var(--accent-color);
  font-size: 1.3rem;
}

.responsibility-card ul {
  list-style: none;
  padding: 0;
}

.responsibility-card li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.responsibility-card li:last-child {
  border-bottom: none;
}

.responsibility-card strong {
  color: var(--primary-color);
  font-weight: 600;
}

/* Contact */
.contact-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contact-content p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  background: white;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  font-weight: 500;
}

.contact-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: var(--accent-color);
}

.contact-link i {
  font-size: 1.2rem;
  color: var(--accent-color);
}

/* Footer */
.footer {
  background: var(--primary-color);
  color: white;
  text-align: center;
  padding: 2rem 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .about-stats {
    flex-direction: row;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    right: -100%;
    background: white;
    flex-direction: column;
    width: 100%;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
  }
  
  .nav-menu.active {
    right: 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-links {
    flex-direction: column;
    align-items: center;
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .about-stats {
    flex-direction: column;
  }
  
  .image-placeholder {
    width: 250px;
    height: 250px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  .hero-container {
    padding: 0 1rem;
  }
  
  .section {
    padding: 4rem 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .image-placeholder {
    width: 200px;
    height: 200px;
  }
  
  .image-placeholder i {
    font-size: 3rem;
  }
}

/* Animations avancées */
.section {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out forwards;
}

.section:nth-child(even) {
  animation-delay: 0.2s;
}

.section:nth-child(odd) {
  animation-delay: 0.1s;
}

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

/* Scroll Spy */
.nav-link.active {
  background: var(--bg-accent);
  color: var(--accent-color);
}

/* Smooth scrolling pour les ancres */
html {
  scroll-padding-top: 70px;
}

/* Hover effects pour les liens */
a {
  transition: all 0.3s ease;
}

/* Focus states pour l'accessibilité */
*:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Styles pour la page des publications */
.publications-section {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem;
}

.publications-section h2 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 2rem;
  text-align: center;
}

.publications-section h3 {
  font-size: 1.75rem;
  color: var(--secondary-color);
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.publication-list {
  list-style: none;
  padding: 0;
}

.publication-list li {
  margin-bottom: 1.5rem;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent-color);
  border-radius: 4px;
  line-height: 1.8;
  transition: all 0.3s ease;
}

.publication-list li:hover {
  background: var(--bg-primary);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.publication-list li strong {
  color: var(--primary-color);
  font-weight: 600;
}

.publication-list li em {
  color: var(--text-primary);
  font-style: italic;
}

.publication-list li a {
  color: var(--accent-color);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: 0.25rem;
}

.publication-list li a:hover {
  text-decoration: underline;
  color: var(--secondary-color);
}

/* Styles génériques pour les pages secondaires */
header {
  background: var(--bg-secondary);
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2rem;
}

header h1 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  text-align: center;
}

header p {
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 1.5rem;
}

header nav {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 0 1rem;
}

header nav a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: all 0.3s ease;
}

header nav a:hover {
  background: var(--bg-accent);
  color: var(--accent-color);
}

main {
  min-height: 60vh;
  padding: 2rem 1rem;
}

main h2 {
  font-size: 2rem;
  color: var(--primary-color);
  margin-bottom: 2rem;
}

main h3 {
  font-size: 1.5rem;
  color: var(--secondary-color);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

main ul {
  margin-left: 2rem;
}

main li {
  margin-bottom: 1rem;
  line-height: 1.8;
}

footer {
  background: var(--bg-secondary);
  padding: 2rem 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  margin-top: 4rem;
  color: var(--text-secondary);
}

footer p {
  margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .about-header {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }
  
  .photo-wrapper {
    margin: 0 auto;
  }
  
  .about-info h1 {
    font-size: 2rem;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .about-tags {
    justify-content: center;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .about-stats {
    flex-direction: row;
    gap: 1rem;
  }
}