/* Palette principale */
body {
    background-color: #f9fbff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #212529;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar personnalisée */
.navbar {
    background-color: #007bff; /* bleu clair */
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.3rem;
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: #e9ecef !important;
}

.navbar-nav .nav-link {
    color: white !important;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 0.375rem;
    margin: 0 0.25rem;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255,255,255,0.1);
    text-decoration: none;
}

.navbar-nav .nav-link.active {
    background-color: rgba(255,255,255,0.2);
    font-weight: 600;
}

/* Conteneur principal */
main.container {
    margin-top: 2rem;
    flex: 1;
}

/* Boutons */
.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #004999;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,123,255,0.3);
}

.btn-outline-light {
    transition: all 0.3s ease;
}

.btn-outline-light:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Formulaires */
form input,
form select,
form textarea {
    margin-bottom: 15px;
}

/* Titres */
h1, h2, h3 {
    color: #003366;
    font-weight: bold;
}

/* Tableaux et listes */
table {
    background-color: white;
    border: 1px solid #dee2e6;
    border-radius: 8px;
}

th {
    background-color: #e9f2ff;
    color: #003366;
}

footer {
    background: #f8f9fa;
    padding: 1.5rem 0;
    margin-top: auto;
    border-top: 1px solid #dee2e6;
    color: #6c757d;
}

footer .container {
    max-width: 1200px;
}

/* Améliorations responsive */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .navbar-nav .nav-link {
        text-align: center;
        margin: 0.25rem 0;
    }
    
    main.container {
        margin-top: 1rem;
    }
}

/* Focus pour l'accessibilité */
.nav-link:focus,
.btn:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* Carte d’accueil */
.card-acceuil {
    background-color: #0d6efd;
    color: white;
    padding: 60px 30px;
    text-align: center;
    border-radius: 20px;
    box-shadow: 0px 8px 24px rgba(0, 0, 0, 0.15);
}

.card-acceuil h1 {
    font-size: 2.8rem;
    font-weight: 700;
}

.card-acceuil p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}