/* Variables CSS */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #1f2937;
  --text-light: #6b7280;
  --background: #ffffff;
  --card: #1f2937;
  --card-text: #f9fafb;
  --card-text-light: #d1d5db;
  --border: #374151;
  --radius: 8px;
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
  background-image: url('background.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 100vh;
  background-attachment: scroll;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
  position: relative;
  z-index: 1;
}

/* ===== EN-TÊTE CORRIGÉ ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 0;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background-color: rgba(31, 41, 55, 0.95);
  z-index: 100;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  min-height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.logo img {
  height: 45px;
  width: auto;
  border-radius: var(--radius);
  object-fit: contain;
}

.logo-text {
  font-weight: 700;
  color: #f9fafb;
  font-size: 1rem;
}

.logo .muted {
  color: #d1d5db;
  font-size: 0.85rem;
}

/* Navigation desktop */
.main-nav {
  display: flex;
  gap: 20px;
}

.main-nav a {
  text-decoration: none;
  color: #f9fafb;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s;
  padding: 8px 12px;
  border-radius: var(--radius);
}

.main-nav a:hover {
  color: var(--primary);
  background-color: rgba(255, 255, 255, 0.1);
}

/* Bouton menu mobile */
.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #f9fafb;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius);
  background-color: rgba(255, 255, 255, 0.1);
  min-width: 44px;
  min-height: 44px;
}

/* ===== STYLES RESPONSIVE ===== */

/* Tablettes */
@media (max-width: 1000px) {
  .menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: rgba(31, 41, 55, 0.98);
    backdrop-filter: blur(15px);
    flex-direction: column;
    padding: 20px;
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav a {
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    font-size: 1rem;
  }

  .main-nav a:last-child {
    border-bottom: none;
  }
}

/* Mobiles */
@media (max-width: 768px) {
  header {
    padding: 12px 0;
    min-height: 65px;
  }

  .logo img {
    height: 40px;
  }

  .logo-text {
    font-size: 0.9rem;
  }

  .logo .muted {
    font-size: 0.8rem;
  }

  .main-nav {
    top: 65px;
  }
}

/* Petits mobiles */
@media (max-width: 480px) {
  .logo {
    gap: 8px;
  }

  .logo img {
    height: 35px;
  }

  .logo-text {
    font-size: 0.85rem;
  }

  .logo .muted {
    font-size: 0.75rem;
  }
}

/* ===== RESTE DU STYLE (inchangé) ===== */

.muted {
  color: var(--text-light);
}

/* Section Hero */
.hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 40px 0;
  gap: 30px;
  flex-direction: column;
}

.hero-left {
  flex: 1;
  width: 100%;
}

.hero h1 {
  font-size: 1.8rem;
  line-height: 1.3;
  margin-bottom: 20px;
  color: #1f2937;
  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.hero-actions {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-direction: column;
  align-items: flex-start;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  background-color: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  transition: background-color 0.2s, transform 0.2s;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-align: center;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn:hover, .btn:focus {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

.learn-more {
  align-self: center;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
  text-shadow: 0 1px 1px rgba(255, 255, 255, 0.8);
  padding: 10px 0;
}

.learn-more:hover, .learn-more:focus {
  color: var(--primary);
}

.hero-right {
  width: 100%;
  max-width: 100%;
}

/* Grille et cartes */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 20px;
}

.card {
  background-color: rgba(31, 41, 55, 0.95);
  color: var(--card-text);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(55, 65, 81, 0.8);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  background-color: rgba(31, 41, 55, 0.98);
}

.card h3 {
  margin-bottom: 12px;
  color: #f9fafb;
  font-size: 1.1rem;
}

.card .muted {
  color: var(--card-text-light);
  font-size: 0.9rem;
}

.summary-list {
  margin-top: 8px;
  padding-left: 18px;
}

.summary-list li {
  margin-bottom: 8px;
  font-size: 0.9rem;
}

/* Projets */
.projects {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 20px;
}

.project {
  background-color: rgba(31, 41, 55, 0.95);
  color: var(--card-text);
  padding: 18px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(5px);
  border: 1px solid rgba(55, 65, 81, 0.8);
  transition: transform 0.2s, background-color 0.2s;
}

.project:hover {
  transform: translateY(-3px);
  background-color: rgba(31, 41, 55, 0.98);
}

.project strong {
  color: #f9fafb;
  font-size: 1.1rem;
}

.project .muted {
  color: var(--card-text-light);
  font-size: 0.9rem;
}

.partners-grid {
  grid-template-columns: 1fr;
  text-align: center;
}

/* Sections */
section {
  background-color: rgba(255, 255, 255, 0.8);
  margin: 15px -15px;
  padding: 30px 15px;
  border-radius: var(--radius);
  backdrop-filter: blur(3px);
}

.hero {
  background: none;
  margin: 0;
  padding: 40px 0;
}

/* Contact */
.contact-card {
  background-color: rgba(31, 41, 55, 0.95);
  color: var(--card-text);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-top: 20px;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(55, 65, 81, 0.8);
}

.contact-card .muted {
  color: var(--card-text-light);
}

.contact-info {
  margin-top: 20px;
}

.contact-info p {
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.contact-info a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
  padding: 4px 0;
  display: inline-block;
}

.contact-info a:hover {
  color: #60a5fa;
  text-decoration: underline;
}

/* Carte dans la section hero */
.hero .card {
  background-color: rgba(31, 41, 55, 0.95);
  color: var(--card-text);
}

.hero .card h3 {
  color: #f9fafb;
}

.hero .card .muted {
  color: var(--card-text-light);
}

/* Pied de page */
footer {
  padding: 30px 0;
  margin-top: 40px;
  border-top: 1px solid var(--border);
  text-align: center;
  background-color: rgba(31, 41, 55, 0.95);
  backdrop-filter: blur(5px);
  color: var(--card-text);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-brand {
  font-weight: 700;
  color: #f9fafb;
  font-size: 0.9rem;
}

.footer-contact {
  font-size: 0.8rem;
  color: var(--card-text-light);
  line-height: 1.4;
}

footer a {
  color: var(--card-text-light);
  text-decoration: none;
  transition: color 0.2s;
  padding: 2px 4px;
}

footer a:hover, footer a:focus {
  color: var(--primary);
}

/* Accessibilité */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary);
  color: white;
  padding: 12px;
  text-decoration: none;
  border-radius: 0 0 4px 4px;
  z-index: 1000;
  transition: top 0.2s;
  font-size: 0.9rem;
}

.skip-link:focus {
  top: 0;
}

a:focus, button:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Animations */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive pour desktop */
@media (min-width: 768px) {
  .hero {
    flex-direction: row;
    padding: 60px 0;
  }
  
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .hero-actions {
    flex-direction: row;
  }
  
  .grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .projects {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  section {
    margin: 20px -20px;
    padding: 40px 20px;
  }
}

@media (min-width: 1000px) {
  .menu-btn {
    display: none;
  }
  
  .main-nav {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    flex-direction: row;
    padding: 0;
    background: none;
    backdrop-filter: none;
    box-shadow: none;
  }
  
  .main-nav a {
    padding: 8px 12px;
    border-bottom: none;
    font-size: 0.9rem;
  }
  
  .grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .projects {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
  
  .partners-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  body {
    background-attachment: fixed;
  }
}