body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    margin: 0;
    padding: 0;
}
.login-container, .portal-container {
    width: 90%;
    max-width: 500px;
    margin: 5% auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
input[type="text"], input[type="password"] {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    border-radius: 6px;
    border: 1px solid #ccc;
}
button {
    width: 100%;
    padding: 12px;
    background-color: #0055a5;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}
.error { color: red; }
.logo {
    max-height: 60px;
    float: right;
}
.logout {
    float: left;
    margin-top: 20px;
}
.sites-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
.site-card {
    background: #fff;
    border: 1px solid #ddd;
    padding: 10px;
    width: 220px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.site-card img {
    max-width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 6px;
}