.cus-container {
    max-width: 400px;
    margin: 2em auto;
    padding: 2em;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 18px 0 rgba(0,0,0,0.07), 0 0.5px 1.5px rgba(0,0,0,0.02);
    font-family: 'Segoe UI', Arial, sans-serif;
}
.cus-container h2 { margin-top: 0; color: #1976d2; }
.cus-section { margin-bottom: 1.5em; }
.cus-label { font-weight: bold; }
.cus-email { color: #333; }
.cus-form { margin-top: 1em; }
.cus-input {
    width: 100%;
    padding: 0.7em;
    margin-bottom: 1em;
    border: 1px solid #bdbdbd;
    border-radius: 6px;
    transition: border-color 0.3s;
    font-size: 1em;
}
.cus-input:focus { border-color: #1976d2; outline: none; }
.cus-btn {
    width: 100%;
    background: #1976d2;
    color: #fff;
    font-weight: bold;
    padding: 0.8em 0;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.2s;
}
.cus-btn:hover { background: #1565c0; }
.cus-alert {
    padding: 0.8em 1em;
    margin-bottom: 1em;
    border-radius: 6px;
    font-size: 1em;
}
.cus-alert-error {
    background: #ffebee;
    color: #c62828;
    border: 1px solid #ef9a9a;
}
.cus-alert-success {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #a5d6a7;
}
.cus-link {
    color: #1976d2;
    text-decoration: underline;
}
.cus-link:hover { color: #1565c0; }
.cus-logout {
    color: #c62828;
    text-decoration: none;
    font-weight: bold;
}
.cus-logout:hover { text-decoration: underline; }
@media (max-width: 500px) {
    .cus-container { max-width: 98%; padding: 1em; }
}