:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --text-color: #2c3e50;
  --light-bg: #f5f6fa;
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
}

/* Header & Navigation */
header {
  background-color: white;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
}

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

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

nav a:hover {
  color: var(--secondary-color);
}

/* Mobile Menu Styles */
.mobile-menu-toggle {
  display: none;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.5rem;
  position: absolute;
  right: 1rem;
  top: 1rem;
  z-index: 1001;
  color: var(--primary-color);
}

.mobile-menu-toggle i {
  font-size: 1.5rem;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  nav ul {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: white;
    padding: 80px 2rem 2rem;
    box-shadow: -2px 0 5px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
    z-index: 1000;
  }

  nav ul.active {
    display: flex;
    right: 0;
  }

  nav ul li {
    margin: 1rem 0;
  }

  .overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }

  .overlay.active {
    display: block;
  }
}

/* Hero Section */
#hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 600px;
  z-index: 1;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2rem;
  background-color: var(--secondary-color);
  color: white;
  text-decoration: none;
  border-radius: 5px;
  transition: transform 0.3s, background-color 0.3s;
}

.cta-button:hover {
  transform: translateY(-2px);
  background-color: #2980b9;
}

/* Services Section */
#services {
  padding: 5rem 5%;
  background-color: white;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  padding: 2rem;
  background-color: var(--light-bg);
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s;
}

.service-card:hover {
  transform: translateY(-5px);
}

.service-card i {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.services-introduction {
  max-width: 800px;
  margin: 0 auto 3rem;
  text-align: center;
}

.service-details {
  margin-top: 1.5rem;
  text-align: left;
  padding: 1rem;
  background: rgba(255,255,255,0.7);
  border-radius: 5px;
}

.service-details ul, 
.service-details ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.service-details li {
  margin-bottom: 0.5rem;
}

.additional-services {
  margin-top: 4rem;
  padding: 2rem;
  background: var(--light-bg);
  border-radius: 10px;
}

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

.additional-service {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.methodology-overview {
  margin-top: 4rem;
  text-align: center;
}

.methodology-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.success-stories {
  margin-top: 4rem;
}

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

.story {
  background: var(--light-bg);
  padding: 1.5rem;
  border-radius: 8px;
  text-align: left;
}

/* Expertise Section */
#expertise {
  padding: 5rem 5%;
  background-color: var(--light-bg);
}

.expertise-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.expertise-text ul {
  list-style: none;
}

.expertise-text li {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  position: relative;
}

.expertise-text li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
}

.skill-meter {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.skill {
  background-color: white;
  padding: 1rem;
  border-radius: 5px;
}

.progress-bar {
  height: 8px;
  background-color: #eee;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: var(--secondary-color);
  animation: fillProgress 1.5s ease-out forwards;
}

.expertise-introduction {
  max-width: 800px;
  margin: 0 auto 3rem;
  text-align: center;
}

.certification-details {
  margin-left: 1.5rem;
  font-size: 0.9em;
  color: #666;
  margin-top: 0.5rem;
}

.expertise-domains {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.domain {
  background: var(--light-bg);
  padding: 1.5rem;
  border-radius: 8px;
}

.domain h4 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.domain ul {
  margin-left: 1.5rem;
}

.skill-details {
  margin-top: 1rem;
  font-size: 0.9em;
  background: white;
  padding: 1rem;
  border-radius: 5px;
  display: none;
}

.skill:hover .skill-details {
  display: block;
}

.technologies-mastered {
  margin-top: 4rem;
  background: var(--light-bg);
  padding: 2rem;
  border-radius: 10px;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.tech-category {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.tech-category h4 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.publications-research {
  margin-top: 4rem;
}

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

.publication {
  background: var(--light-bg);
  padding: 1.5rem;
  border-radius: 8px;
}

.publication h4 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

/* Methodology Section */
#methodologie {
  padding: 5rem 5%;
  background-color: white;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.timeline-item {
  text-align: center;
  position: relative;
}

.timeline-content {
  background-color: var(--light-bg);
  padding: 2rem;
  border-radius: 10px;
  position: relative;
}

.timeline-content h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.methodology-introduction {
  max-width: 800px;
  margin: 0 auto 3rem;
  text-align: center;
}

.framework-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.framework-item {
  background: var(--light-bg);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.framework-item h4 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.framework-item ul {
  list-style-type: none;
}

.framework-item li {
  margin-bottom: 0.8rem;
  padding-left: 1.5rem;
  position: relative;
}

.framework-item li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
}

.timeline-details {
  background: white;
  padding: 1.5rem;
  margin-top: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.timeline-details h4 {
  color: var(--secondary-color);
  margin: 1rem 0 0.5rem;
}

.timeline-details ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.duration {
  font-style: italic;
  color: #666;
  margin-top: 1rem;
}

.qa-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.qa-item {
  background: var(--light-bg);
  padding: 1.5rem;
  border-radius: 8px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.metric {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.metric h4 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

/* Contact Section */
#contact {
  padding: 5rem 5%;
  background-color: var(--light-bg);
}

.contact-container {
  max-width: 600px;
  margin: 3rem auto 0;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input,
textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-family: inherit;
}

textarea {
  height: 150px;
  resize: vertical;
}

/* Ajout pour la marge des pages secondaires */
#services, #expertise, #methodologie, #contact {
  padding-top: 120px;
}

/* Parcours */
.parcours-header {
  background: var(--light-bg);
  padding: 3rem 5%;
  margin-bottom: 3rem;
}

.profile-container {
  display: flex;
  align-items: center;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.profile-photo-container {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  overflow: hidden;
  border: 5px solid white;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-intro {
  flex: 1;
}

.profile-intro h1 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.profile-intro .subtitle {
  font-size: 1.2rem;
  color: var(--secondary-color);
}

.parcours-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

.parcours-content section {
  margin-bottom: 4rem;
}

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

.timeline-education,
.experience-timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.education-item,
.experience-item,
.certification-item {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.education-item h3,
.experience-item h3,
.certification-item h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.institution,
.date {
  color: #666;
  font-style: italic;
  margin-bottom: 1rem;
}

.achievements,
.domains {
  margin-top: 1rem;
  margin-left: 1.5rem;
}

.achievements li,
.domains li {
  margin-bottom: 0.5rem;
}

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

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

.publication-item {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.publication-item h3 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
}

.publication-item ul {
  list-style: none;
}

.publication-item li {
  margin-bottom: 1.5rem;
}

.publication-item h4 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  nav ul {
    display: none;
  }
  
  .expertise-container {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    text-align: center;
  }
  
  .service-row,
  .methodology-steps,
  .stories-grid {
    grid-template-columns: 1fr;
  }
  
  .service-details {
    padding: 0.8rem;
  }
  
  .expertise-domains,
  .tech-grid,
  .publications-grid {
    grid-template-columns: 1fr;
  }
  
  .timeline-details {
    padding: 1rem;
  }
  
  .framework-grid,
  .qa-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  
  .profile-container {
    flex-direction: column;
    text-align: center;
  }

  .profile-photo-container {
    width: 200px;
    height: 200px;
    margin: 0 auto;
  }

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

/* Add new styles for Terms and Privacy pages */
.content-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 5%;
}

.last-updated {
  color: #666;
  font-style: italic;
  margin-bottom: 2rem;
}

.terms-section,
.privacy-section {
  margin-bottom: 3rem;
}

.terms-section h2,
.privacy-section h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.terms-section h3,
.privacy-section h3 {
  color: var(--secondary-color);
  margin: 1.5rem 0 1rem;
}

.terms-section p,
.privacy-section p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

.terms-section ul,
.privacy-section ul {
  margin: 1rem 0 1rem 2rem;
}

.terms-section li,
.privacy-section li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.terms-section a,
.privacy-section a {
  color: var(--secondary-color);
  text-decoration: none;
}

.terms-section a:hover,
.privacy-section a:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: white;
  padding: 3rem 5% 1rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  color: white;
  font-size: 1.5rem;
  transition: color 0.3s;
}

.footer-social a:hover {
  color: var(--secondary-color);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a {
  color: white;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-links a:hover {
  color: var(--secondary-color);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* Animations */
@keyframes fillProgress {
  from { width: 0; }
  to { width: var(--percent); }
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    gap: 2rem;
    text-align: center;
  }
  
  .footer-links {
    align-items: center;
  }
}

/* Enhanced Typography for Home Page */
.section-padding {
  padding: 5rem 5%;
}

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

.intro-text {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--text-color);
  text-align: center;
  max-width: 800px;
  margin: 2rem auto;
  position: relative;
  padding: 2rem;
  background: linear-gradient(to right, rgba(255,255,255,0.8), rgba(255,255,255,0.95), rgba(255,255,255,0.8));
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.key-stats {
  display: flex;
  justify-content: space-around;
  margin: 3rem 0;
  flex-wrap: wrap;
  gap: 2rem;
}

.stat-item {
  text-align: center;
  flex: 1;
  min-width: 200px;
  padding: 2rem;
  background: white;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transform: translateY(0);
  transition: transform 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-10px);
}

.stat-number {
  font-size: 3rem;
  font-weight: bold;
  color: var(--secondary-color);
  display: block;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--secondary-color), #2980b9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: white;
  padding: 2.5rem 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.feature-card i {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  display: block;
}

.feature-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.feature-card p {
  line-height: 1.6;
  color: #666;
}

.challenges-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
  margin-top: 3rem;
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.challenges-list, .solutions-list {
  list-style: none;
  padding: 0;
}

.challenges-list li, .solutions-list li {
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
}

.challenges-list li:before {
  content: "⚠️";
  position: absolute;
  left: 0;
}

.solutions-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-weight: bold;
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.insight-card {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.insight-card:hover {
  transform: translateY(-5px);
}

.insight-card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.read-more {
  display: inline-block;
  margin-top: 1rem;
  color: var(--secondary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.read-more:hover {
  color: var(--primary-color);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial-card {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  position: relative;
}

.testimonial-card:before {
  content: """;
  font-size: 4rem;
  color: var(--secondary-color);
  opacity: 0.2;
  position: absolute;
  top: 0;
  left: 1rem;
}

.client-info {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid #eee;
}

.client-name {
  display: block;
  font-weight: bold;
  color: var(--primary-color);
}

.client-position {
  font-size: 0.9rem;
  color: #666;
}

.cta-container {
  text-align: center;
  padding: 4rem 2rem;
  background: linear-gradient(135deg, var(--light-bg), white);
  border-radius: 15px;
  max-width: 800px;
  margin: 0 auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.cta-button.secondary {
  background-color: transparent;
  border: 2px solid var(--secondary-color);
  color: var(--secondary-color);
}

.cta-button.secondary:hover {
  background-color: var(--secondary-color);
  color: white;
}

/* Responsive Design Adjustments */
@media (max-width: 768px) {
  .key-stats {
    flex-direction: column;
  }
  
  .stat-item {
    width: 100%;
  }
  
  .challenges-content {
    grid-template-columns: 1fr;
  }
  
  .cta-buttons {
    flex-direction: column;
  }
  
  .feature-card,
  .insight-card,
  .testimonial-card {
    margin: 0 1rem;
  }
}

/* Animation for stats on scroll */
@keyframes countUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.stat-item.animate {
  animation: countUp 0.8s ease-out forwards;
}