/* Global */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f0f2f5;
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
main {
    flex: 1;
    padding: 20px;
    max-width: 1000px;
    margin: auto;
}

/* Bannière */
header.banniere {
    background-color: #004466;
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
}
header.banniere h1 {
    font-size: 24px;
}
.userinfo {
    font-size: 14px;
}
.userinfo a {
    color: #aee4ff;
    text-decoration: none;
}
.userinfo a:hover {
    text-decoration: underline;
}

/* Footer */
footer.pied {
    background-color: #222;
    color: #ccc;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}

/* Login */
.login-container {
    background: white;
    padding: 30px;
    max-width: 400px;
    margin: 50px auto;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    border-radius: 8px;
}
.login-container h2 {
    text-align: center;
    margin-bottom: 20px;
}
.login-container label {
    display: block;
    margin: 10px 0 5px;
}
.login-container input[type="text"],
.login-container input[type="password"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
.login-container button {
    width: 100%;
    padding: 10px;
    background-color: #004466;
    color: white;
    border: none;
    border-radius: 5px;
    margin-top: 15px;
    cursor: pointer;
    font-size: 16px;
}
.login-container button:hover {
    background-color: #006699;
}
.error {
    background-color: #ffe0e0;
    color: #a00;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #a00;
}

/* Tableaux */
table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    margin-top: 20px;
    border: 1px solid #ccc;
}
th, td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}
th {
    background-color: #f4f4f4;
}

/* Responsive */
@media (max-width: 600px) {
    header.banniere, .userinfo {
        flex-direction: column;
        align-items: flex-start;
    }

    .login-container {
        margin: 20px;
    }
}