html, body {
    height: 100%;
}
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f7f7fa;
    color: #222;
}

header {
    background: #2d6a4f;
    color: #fff;
    padding: 2rem 1rem 1rem 1rem;
    text-align: center;
}

nav {
    background: #40916c;
    padding: 0.5rem 0;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
}
nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.2s;
}
nav a:hover {
    color: #b7e4c7;
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    flex: 1 0 auto;
}
section {
    margin-bottom: 2rem;
}
h3 {
    color: #1b4332;
}
footer {
    background: #2d6a4f;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
    font-size: 0.95rem;
    flex-shrink: 0;
}

/* Ajout pour le sélecteur de langue */
.lang-toggle {
    margin: 1rem 0;
    text-align: center;
}
.lang-toggle button {
    background: #40916c;
    color: #fff;
    border: none;
    padding: 0.5rem 1.2rem;
    margin: 0 0.3rem;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.2s, color 0.2s;
}
.lang-toggle button:hover {
    background: #1b4332;
    color: #b7e4c7;
}