/* Global styles */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background-color: #fff; /* Fond sombre */
    color: #fff;
}

/* Header */
header {
    background-color: #009999;
    padding: 20px 0;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

/* Navigation menu */
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center; /* Centrer horizontalement */
    align-items: center;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 1.2em;
    font-weight: bold;
    padding: 10px 20px;
    border-radius: 30px;
    transition: all 0.3s ease;
    display: block;
}

nav ul li a.nav-link:hover {
    background-color: #007777;
    color: #fff;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

nav ul li a.active {
    background-color: #005757;
    border-bottom: 3px solid #009999;
}

/* Effet de focus pour l'accessibilité */
nav ul li a:focus {
    outline: none;
    background-color: #005757;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* Main content */
main {
    padding: 20px 20px;
    max-width: 100%;
    margin: 20px auto;
    background: #fff;
    color: #333;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    flex: 1;
}

/* Footer */
footer {
    background-color: #222;
    padding: 25px 0;
    color: #ccc;
    text-align: center;
    font-size: 0.9em;
    margin-top: 30px;
}

footer img {
    width: 30px;
    height: 30px;
    margin-bottom: 15px;
}

footer p {
    margin: 0;
    font-size: 0.9em;
}

footer p a {
    color: #009999;
    text-decoration: none;
}

footer p a:hover {
    color: #007777;
}