:root {
  
  --primary-color: #1a3c5e;
  --primary-dark: #0f2538;
  --primary-light: #2d5a85;
  --accent-color: #007bff;
  
  
  --white: #ffffff;
  --gray-light: #f8f9fa;
  --gray-medium: #6c757d;
  --gray-dark: #343a40;
  --black: #000000;
  
  
  --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  
  
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth; 
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--gray-dark);
  background-color: var(--white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-light);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: var(--gray-medium);
  margin-bottom: var(--spacing-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem var(--spacing-md);
}


.logo a {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  letter-spacing: 1px;
}

.logo img {
  max-height: 50px;
  height: auto;
  width: auto;
  display: block;
}

.logo a:hover {
  color: var(--primary-light);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--gray-dark);
  font-weight: var(--font-weight-medium);
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--primary-color);
  background-color: var(--gray-light);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
  transition: var(--transition);
}

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?w=1600&h=900&fit=crop');
  background-size: cover;
  background-position: center;
  background-attachment: fixed; 
  color: var(--white);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 60, 94, 0.9), rgba(15, 37, 56, 0.8));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 0 var(--spacing-md);
  animation: fadeInUp 1s ease;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--white);
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-lg);
  font-weight: var(--font-weight-light);
  opacity: 0.95;
}

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-align: center;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
  background-color: #0056b3;
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

.btn-secondary {
  background-color: var(--primary-color);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  color: var(--white);
}

.btn-block {
  width: 100%;
  display: block;
}

.expertises {
  background-color: var(--gray-light);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.expertise-card {
  background-color: var(--white);
  padding: var(--spacing-md);
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
  border: 2px solid transparent;
}

.expertise-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  border-color: var(--primary-color);
}

.expertise-icon {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.expertise-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.expertise-card p {
  color: var(--gray-medium);
  font-size: 0.95rem;
  line-height: 1.5;
}

.about {
  background-color: var(--white);
}

.about-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.about-text {
  flex: 1;
}

.about-text h2 {
  text-align: left;
}

.about-text p {
  font-size: 1.05rem;
  color: var(--gray-dark);
  margin-bottom: var(--spacing-md);
}

.about-list {
  list-style: none;
  margin: var(--spacing-md) 0;
}

.about-list li {
  font-size: 1rem;
  color: var(--gray-dark);
  padding: 0.5rem 0;
  border-left: 3px solid var(--accent-color);
  padding-left: var(--spacing-sm);
  margin-bottom: 0.5rem;
}

.about-image {
  flex: 1;
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.realisations {
  background-color: var(--gray-light);
}

.realisation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.realisation-card {
  background-color: var(--white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
}

.realisation-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.realisation-image {
  height: 200px;
  overflow: hidden;
}

.realisation-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.realisation-card:hover .realisation-image img {
  transform: scale(1.1);
}

.realisation-content {
  padding: var(--spacing-md);
}

.realisation-content h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.realisation-content p {
  color: var(--gray-medium);
  font-size: 0.95rem;
}

.contact {
  background-color: var(--white);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--gray-light);
  border-radius: 10px;
  transition: var(--transition);
}

.contact-item:hover {
  background-color: #e9ecef;
  transform: translateX(5px);
}

.contact-icon {
  color: var(--primary-color);
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--primary-color);
}

.contact-item p {
  font-size: 0.95rem;
  color: var(--gray-medium);
  margin: 0;
}

.contact-form {
  background-color: var(--gray-light);
  padding: var(--spacing-md);
  border-radius: 10px;
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem;
  font-family: var(--font-family);
  font-size: 1rem;
  border: 2px solid #dee2e6;
  border-radius: 8px;
  transition: var(--transition);
  background-color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(26, 60, 94, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.footer {
  background-color: var(--primary-color);
  color: var(--white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-section h3,
.footer-section h4 {
  color: var(--white);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: 0.5rem;
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
}

.footer-section ul li a:hover {
  color: var(--white);
  padding-left: 5px;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

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

.footer-bottom a {
  color: rgba(255, 255, 255, 0.9);
}

.footer-bottom a:hover {
  color: var(--white);
  text-decoration: underline;
}

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

@media (max-width: 768px) {
  
  .nav-menu {
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    background-color: var(--white);
    flex-direction: column;
    align-items: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  
  .nav-menu.active {
    max-height: 400px;
    padding: var(--spacing-sm) 0;
  }
  
  .hamburger {
    display: flex;
  }
  
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  
  .about-content {
    flex-direction: column;
  }
  
  
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  
  
  .footer-content {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .expertise-grid,
  .realisation-grid {
    grid-template-columns: 1fr;
  }
}


/* ==============================
   PAGES LÉGALES (Mentions Légales & Politique de Confidentialité)
   ============================== */

.legal-page {
  background-color: var(--gray-light);
  min-height: 100vh;
  padding-top: 120px;
}

.legal-content {
  background-color: var(--white);
  padding: var(--spacing-lg);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  max-width: 900px;
  margin: 0 auto var(--spacing-lg);
}

.legal-section {
  margin-bottom: var(--spacing-lg);
}

.legal-section h2 {
  color: var(--primary-color);
  font-size: 1.75rem;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-color);
}

.legal-section h3 {
  color: var(--primary-dark);
  font-size: 1.35rem;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.legal-section h4 {
  color: var(--primary-dark);
  font-size: 1.15rem;
  margin-top: var(--spacing-sm);
  margin-bottom: 0.5rem;
  font-weight: var(--font-weight-medium);
}

.legal-section p {
  color: var(--gray-dark);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
  text-align: justify;
}

.legal-section ul {
  margin-left: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  list-style-type: disc;
}

.legal-section li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
  color: var(--gray-dark);
}

.legal-section a {
  color: var(--accent-color);
  text-decoration: underline;
}

.legal-section a:hover {
  color: var(--primary-light);
}

.legal-section strong {
  color: var(--primary-dark);
  font-weight: var(--font-weight-medium);
}

.legal-back {
  text-align: center;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

/* Responsive pour pages légales */
@media (max-width: 768px) {
  .legal-page {
    padding-top: 100px;
  }

  .legal-content {
    padding: var(--spacing-md);
  }

  .legal-section h2 {
    font-size: 1.5rem;
  }

  .legal-section h3 {
    font-size: 1.2rem;
  }

  .legal-section p {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .legal-content {
    padding: var(--spacing-sm);
  }

  .legal-section h2 {
    font-size: 1.3rem;
  }

  .legal-section ul {
    margin-left: var(--spacing-sm);
  }
}