/* --- Styles Globaux --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* --- Conteneur Principal (pour les formulaires et les pages de bienvenue) --- */
.container {
    background-color: #ffffff;
    padding: 2rem 2.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

h1, h2 {
    margin-bottom: 1.5rem;
    color: #0056b3;
}

p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

/* --- Styles des Formulaires --- */
form div {
    margin-bottom: 1rem;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

input[type="radio"] {
    margin-right: 0.5rem;
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease-in-out;
}

button:hover {
    background-color: #0056b3;
}

/* --- Liens et Messages --- */
a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Pour le message d'erreur de login.php */
.error-message {
    background-color: #f8d7da;
    color: #721c24;
    padding: 0.75rem;
    border: 1px solid #f5c6cb;
    border-radius: 5px;
    margin-bottom: 1rem;
    text-align: center;
}

/* Pour le message de succès de register.php */
.success-message {
     background-color: #d4edda;
    color: #155724;
    padding: 0.75rem;
    border: 1px solid #c3e6cb;
    border-radius: 5px;
    margin-bottom: 1rem;
    text-align: center;
}