body {
    background: linear-gradient(135deg, #7b1f1f, #a52a2a);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.login-card {
    width: 100%;
    max-width: 420px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    background: #ffffff;
}

.brand {
    font-weight: 700;
    color: #7b1f1f;
    letter-spacing: 1px;
}

.login-card p {
    font-size: 14px;
}

.btn-danger {
    background-color: #7b1f1f;
    border-color: #7b1f1f;
}

.btn-danger:hover {
    background-color: #5e1717;
    border-color: #5e1717;
}