/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --blue: #0066B3;
  --blue-dark: #004A82;
  --blue-light: #E8F4FD;
  --orange: #F5A623;
  --orange-dark: #D4891A;
  --red: #C0392B;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.3s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

/* ===== UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--gray-500);
  margin-bottom: 48px;
  max-width: 600px;
}

.section-subtitle.centered {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-title.centered {
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
}

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

.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn-outline {
  background: transparent;
  color: var(--blue);
  border: 2px solid var(--blue);
}

.btn-outline:hover {
  background: var(--blue);
  color: var(--white);
}

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

.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-1px);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

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

.logo img {
  height: 40px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition);
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue);
  transition: width var(--transition);
}

.nav a:hover,
.nav a.active {
  color: var(--blue);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

/* Pas de soulignement ni changement de couleur sur le bouton Contact */
.nav a.btn:hover,
.nav a.btn.active {
  color: var(--white);
}

.nav a.btn::after,
.nav a.btn:hover::after,
.nav a.btn.active::after {
  display: none;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  transition: all var(--transition);
}

/* ===== LANGUAGE SWITCH ===== */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-500);
  letter-spacing: 0.02em;
}

.lang-switch a {
  color: var(--gray-500);
  text-transform: uppercase;
  transition: color var(--transition);
  padding: 2px 0;
}

.lang-switch a:hover {
  color: var(--blue);
}

.lang-switch a.active {
  color: var(--blue);
}

.lang-switch .sep {
  color: var(--gray-300);
}

.nav .lang-switch a::after,
.nav .lang-switch a:hover::after,
.nav .lang-switch a.active::after {
  display: none;
}

/* ===== HERO ===== */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--blue-light) 0%, var(--white) 50%, var(--gray-50) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,166,35,0.08) 0%, transparent 70%);
}

.hero .container {
  position: relative;
}

.hero-content {
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: 24px;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
}

.hero h1 {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.hero h1 .highlight {
  color: var(--blue);
}

.hero p {
  font-size: 1.25rem;
  color: var(--gray-500);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== SERVICES SECTION ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--blue);
  transform: scaleX(0);
  transition: transform var(--transition);
}

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

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--blue);
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.service-card p {
  color: var(--gray-500);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.service-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.tag {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: 50px;
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* ===== PROJECTS / REALISATIONS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

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

.project-image {
  height: 200px;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.project-image.mescalories {
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
}

.project-image.parcourselu {
  background: linear-gradient(135deg, var(--blue-light) 0%, #D1E8FF 100%);
}

.project-body {
  padding: 24px;
}

.project-body h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.project-body p {
  color: var(--gray-500);
  font-size: 0.9375rem;
  margin-bottom: 16px;
  line-height: 1.7;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--blue);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: gap var(--transition);
}

.project-link:hover {
  gap: 10px;
}

/* ===== STATS ===== */
.stats {
  background: var(--blue);
  color: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h3 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 4px;
}

.stat-item p {
  font-size: 0.9375rem;
  opacity: 0.8;
}

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
  color: var(--white);
  text-align: center;
}

.cta h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta p {
  font-size: 1.125rem;
  opacity: 0.7;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== CONTACT FORM ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--gray-900);
}

.contact-info p {
  color: var(--gray-500);
  margin-bottom: 32px;
  line-height: 1.7;
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  flex-shrink: 0;
}

.contact-detail-icon svg {
  width: 20px;
  height: 20px;
}

.contact-detail-text h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 2px;
}

.contact-detail-text p {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 0;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  color: var(--gray-800);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 179, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ===== ABOUT ===== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.about-text p {
  color: var(--gray-500);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-image {
  background: linear-gradient(135deg, var(--blue-light) 0%, var(--gray-100) 100%);
  border-radius: var(--radius-lg);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.value-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  text-align: center;
}

.value-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--blue-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--blue);
}

.value-icon svg {
  width: 24px;
  height: 24px;
}

.value-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.value-card p {
  color: var(--gray-500);
  font-size: 0.9375rem;
}

/* ===== PAGE HEADER ===== */
.page-header {
  padding: 140px 0 60px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1.125rem;
  color: var(--gray-500);
  max-width: 600px;
}

/* ===== SERVICES DETAIL ===== */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 48px 0;
  border-bottom: 1px solid var(--gray-200);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail:nth-child(even) {
  direction: rtl;
}

.service-detail:nth-child(even) > * {
  direction: ltr;
}

.service-detail-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 12px;
}

.service-detail-content p {
  color: var(--gray-500);
  line-height: 1.8;
  margin-bottom: 16px;
}

.service-detail-content ul {
  list-style: none;
}

.service-detail-content ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--gray-600);
  font-size: 0.9375rem;
  margin-bottom: 8px;
}

.service-detail-content ul li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  flex-shrink: 0;
}

.service-detail-visual {
  background: linear-gradient(135deg, var(--blue-light) 0%, var(--gray-100) 100%);
  border-radius: var(--radius-lg);
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  margin-top: 16px;
  max-width: 300px;
}

.footer-brand .logo img {
  height: 32px;
}

.footer h4 {
  color: var(--white);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.footer ul li {
  margin-bottom: 10px;
}

.footer ul li a {
  color: var(--gray-300);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer ul li a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-detail {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .service-detail:nth-child(even) {
    direction: ltr;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
  }

  .nav.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero p {
    font-size: 1.0625rem;
  }

  .section-title {
    font-size: 1.625rem;
  }

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

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .page-header h1 {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.875rem;
  }

  .section {
    padding: 56px 0;
  }

  .container {
    padding: 0 16px;
  }
}