body, html {
    height: 100%;
    background: linear-gradient(to right, #0066cc, #003366);
    color: white;
}
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}
.login-card {
    width: 100%;
    max-width: 400px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
}
.login-card .card-title {
    font-size: 24px;
    font-weight: bold;
}
.input-field input[type="text"], .input-field input[type="password"] {
    color: white;
}
.input-field .prefix {
    color: white;
}
.input-field input[type="text"]:focus + label, .input-field input[type="password"]:focus + label {
    color: #ffeb3b;
}
.input-field input[type="text"]:focus, .input-field input[type="password"]:focus {
    border-bottom: 1px solid #ffeb3b;
    box-shadow: 0 1px 0 0 #ffeb3b;
}
.btn-custom {
    background-color: #ffeb3b;
    color: #003366;
    font-weight: bold;
}
.btn-custom:hover {
    background-color: #ffd700;
}
.card-action a {
    color: #ffeb3b;
}