body {
    background: linear-gradient(135deg, #e5dede, #dce2e3);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
}

.payment-card {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    max-width: 650px;
    width: 100%;
    padding: 2rem 2.5rem;
    transition: all 0.3s ease;
}

.payment-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.form-floating > label {
    color: #6c757d;
}

.section-title {
    font-weight: 600;
    color: #004aac;
    margin-bottom: 1.2rem;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 0.3rem;
}

.btn-gradient {
    background: linear-gradient(135deg, #004aac, #0066ff);
    border: none;
    color: white;
    padding: 0.75rem 2.5rem;
    border-radius: 10px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-gradient:hover {
    background: linear-gradient(135deg, #0066ff, #004aac);
    box-shadow: 0 4px 10px rgba(0, 74, 172, 0.4);
}

.secure-text {
    color: #6c757d;
    font-size: 0.9rem;
}

.logo img {
    max-width: 160px;
}