/* Reset et variables */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --secondary-color: #10b981;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.6;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  z-index: 1000;
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--primary-color);
}

.nav-logo {
  height: 50px;
  width: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.nav-logo:hover {
  transform: scale(1.05);
}

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

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--primary-color);
}

.nav-links a.active {
  color: var(--primary-color);
}

/* Language Selector */
.language-selector {
  margin-left: 1rem;
}

.language-select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: white;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.language-select:hover {
  border-color: var(--primary-color);
}

.language-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 8rem 2rem 6rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  overflow: hidden;
}

.hero-content {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  z-index: 1;
}

.hero-text {
  padding: 2rem;
  border-radius: 1rem;
  transition: all 0.4s ease;
  background-color: rgba(0, 0, 0, 0);
  backdrop-filter: blur(0px);
}

.hero-text:hover {
  background-color: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  opacity: 0.95;
}

.hero-location {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  opacity: 0.9;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-description {
  font-size: 1.15rem;
  max-width: 800px;
  line-height: 1.8;
  margin-bottom: 2rem;
  opacity: 0.95;
}

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

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 0.5rem;
  color: white;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
}

.hero-link:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

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

/* Experience Section */
.experience {
  padding: 6rem 2rem;
  background-color: var(--bg-secondary);
}

.timeline {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

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

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

.timeline-marker {
  position: absolute;
  left: -6px;
  top: 0;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--primary-color);
  border: 3px solid var(--bg-secondary);
}

.timeline-content {
  background-color: white;
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow);
}

.timeline-period {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.timeline-role {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.timeline-company {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-weight: 600;
}

.timeline-description {
  list-style: none;
  padding-left: 0;
}

.timeline-description li {
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  position: relative;
  color: var(--text-secondary);
}

.timeline-description li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

/* Projects Section */
.projects {
  padding: 6rem 2rem;
  background-color: var(--bg-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.project-card {
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.project-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.project-technologies {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  padding: 0.25rem 0.75rem;
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: 1rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.project-stats {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.project-stat {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.9rem;
}

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

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.project-link:hover {
  color: var(--primary-dark);
}

/* Skills Section */
.skills {
  padding: 6rem 2rem;
  background-color: var(--bg-secondary);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.skill-category {
  background-color: white;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
}

.skill-category-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

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

.skill-tag {
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  color: white;
  border-radius: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.certifications {
  max-width: 900px;
  margin: 0 auto;
  background-color: white;
  padding: 2rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
}

.certifications-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--text-primary);
  text-align: center;
}

.certifications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1rem;
}

.certification-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background-color: var(--bg-tertiary);
  border-radius: 0.5rem;
  transition: all 0.2s;
}

.certification-item:hover {
  background-color: var(--bg-secondary);
  transform: translateX(4px);
}

.certification-year {
  font-weight: 700;
  color: var(--primary-color);
  font-size: 1.1rem;
  min-width: 3rem;
}

.certification-name {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Contact Section */
.contact {
  padding: 6rem 2rem;
  background-color: var(--bg-primary);
}

.contact-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.contact-text {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 2rem;
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  min-width: 300px;
}

.contact-link:hover {
  border-color: var(--primary-color);
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.footer-text {
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.footer-subtext {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.9rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .certifications-grid {
    grid-template-columns: 1fr;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item {
    padding-left: 2rem;
  }

  .contact-link {
    min-width: auto;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 6rem 1rem 4rem;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .container {
    padding: 0 1rem;
  }

  .nav {
    padding: 1rem;
  }

  .nav-links {
    display: none;
  }
}

/* Blog Section */
.blog {
  padding: 6rem 2rem;
  background-color: var(--bg-primary);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.blog-card {
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-color);
}

.blog-card-header {
  margin-bottom: 1rem;
}

.blog-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.blog-card-title a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.2s;
}

.blog-card-title a:hover {
  color: var(--primary-color);
}

.blog-card-date {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.blog-card-excerpt {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  flex-grow: 1;
  line-height: 1.6;
}

.blog-card-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.blog-card-link:hover {
  color: var(--primary-dark);
}

.blog-loading,
.blog-empty,
.blog-error {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Blog Post */
.blog-post-section {
  padding: 6rem 2rem;
  background-color: var(--bg-primary);
  min-height: 100vh;
}

.blog-post {
  max-width: 800px;
  margin: 0 auto;
  background-color: white;
  padding: 3rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow);
}

.blog-post-header {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--border-color);
}

.blog-post-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.blog-post-date {
  color: var(--text-secondary);
  font-size: 1rem;
}

.blog-post-content {
  color: var(--text-primary);
  line-height: 1.8;
  font-size: 1.05rem;
}

.blog-post-content h1,
.blog-post-content h2,
.blog-post-content h3 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-weight: 700;
}

.blog-post-content h1 {
  font-size: 2rem;
}

.blog-post-content h2 {
  font-size: 1.75rem;
}

.blog-post-content h3 {
  font-size: 1.5rem;
}

.blog-post-content p {
  margin-bottom: 1.5rem;
}

.blog-post-content ul,
.blog-post-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.blog-post-content li {
  margin-bottom: 0.5rem;
}

.blog-post-content a {
  color: var(--primary-color);
  text-decoration: underline;
}

.blog-post-content a:hover {
  color: var(--primary-dark);
}

.blog-post-content code {
  background-color: var(--bg-tertiary);
  padding: 0.2rem 0.4rem;
  border-radius: 0.25rem;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

.blog-post-content pre {
  background-color: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.blog-post-content pre code {
  background-color: transparent;
  padding: 0;
}

.blog-post-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  color: var(--text-secondary);
  font-style: italic;
}

.blog-post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin: 1.5rem 0;
}

.blog-post-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border-color);
}

.blog-back-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.blog-back-link:hover {
  color: var(--primary-dark);
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-post {
    padding: 2rem 1.5rem;
  }

  .blog-post-title {
    font-size: 2rem;
  }
}

/* Blog Page */
.blog-page {
  padding: 8rem 0 4rem;
  min-height: 100vh;
}

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

.blog-loading,
.blog-empty,
.blog-error {
  text-align: center;
  padding: 3rem 0;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

.blog-post-section {
  padding: 8rem 0 4rem;
  min-height: 100vh;
}

/* CV Page */
.cv-page {
  padding: 8rem 0 4rem;
  min-height: 100vh;
}

.cv-content {
  margin-top: 1.5rem;
}

.cv-embed-container {
  width: 100%;
  background-color: var(--bg-secondary);
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.cv-iframe {
  width: 100%;
  height: 80vh;
  min-height: 600px;
  border: none;
  display: block;
}

.cv-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.cv-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.2s;
  box-shadow: var(--shadow);
}

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

.cv-download-btn svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2rem;
  }

  .cv-iframe {
    height: 70vh;
    min-height: 500px;
  }
}