body { font-family: Arial, sans-serif; background:#f7f7f7; margin:0; padding:0;}
.login-container, .home-container { max-width:500px; margin:50px auto; background:white; padding:20px; border-radius:10px; box-shadow:0 0 10px rgba(0,0,0,0.1);}
h2 { color:#333; text-align:center; }
input[type=text], input[type=password] { width:100%; padding:10px; margin:10px 0; border-radius:5px; border:1px solid #ccc; }
button { padding:10px 20px; background:#007bff; color:white; border:none; border-radius:5px; cursor:pointer; width:100%; margin-top:10px;}
button:hover { background:#0056b3; }
.categorie { background:#f0f0f0; padding:10px; margin-bottom:10px; border-radius:5px; }
.logout { display:inline-block; margin-top:20px; color:red; text-decoration:none;}
.error { color:red; text-align:center; }