body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(145deg, #fff7e6, #ffe0b3, #ffd180, #ffe9cc);
      padding: 50px;
      margin: 0;
    }

    h2 {
      color: #d35400;
      text-align: center;
      font-size: 36px;
      margin-bottom: 40px;
    }

    .lesson-list {
      max-width: 800px;
      margin: auto;
    }

    .lesson {
      background-color: rgba(255, 255, 255, 0.9);
      border-left: 6px solid #f39c12;
      padding: 20px;
      margin: 10px 0;
      border-radius: 12px;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .lesson:hover {
      transform: translateX(5px);
      box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    }

    .lesson a {
      text-decoration: none;
      color: #e67e22;
      font-size: 20px;
      font-weight: bold;
      display: block;
    }
.bouton-retour:hover {
  background-color: #880e4f;
}
/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color:#fcc880 ;
  padding: 15px 30px;
  font-family: 'Segoe UI', sans-serif;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  display: flex;
  justify-content: center; /* باش كلشي يكون وسط */
  align-items: center;
  z-index: 1000;
  gap: 40px;
}

/* Logo وسط */
.navbar .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #ff4800;
  text-decoration: none;
  letter-spacing: 2px;
}

/* قائمة الروابط */
.navbar nav {
  flex-grow: 1;
}

.navbar .nav-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.navbar .nav-links li a {
  font-size: 1rem;
  color: #333;
  text-decoration: none;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 6px;
  transition: background 0.3s, color 0.3s;
}

.navbar .nav-links li a:hover {
  background-color: #ffe0b2;
  color: #d35400;
}


.navbar .cta-button {
  background: #ff9800;
  color: white;
  padding: 8px 18px;
  border-radius: 20px;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  transition: background 0.3s ease;
}

.navbar .cta-button:hover {
  background: #e67e22;
}

body {
  padding-top: 80px;
}