body {
    background: linear-gradient(135deg, #69bf64, #46a341);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
}
.login-card h2 {
    font-weight: 600;
    color: #488545;
}
.form-control:focus {
    border-color: #69bf64;
    box-shadow: 0 0 0 0.2rem rgba(37,99,235,0.25);
}
.btn-primary {
    background-color: #69bf64;
    border: none;
}
.btn-primary:hover {
    background-color: #69bf64;
}