* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Inter, system-ui, sans-serif;
}

body {
    background: #f9fafb;
    color: #111827;
}

/* NAVBAR */
.navbar {
    padding: 20px 60px;
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.logo h2 {
    color: #2563eb;
}

/* ORDER BOX */
.order {
    max-width: 520px;
    margin: 80px auto;
    padding: 40px;
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.08);
}

.order h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.desc {
    color: #6b7280;
    margin-bottom: 35px;
}

/* FORM */
.form-group {
    margin-bottom: 25px;
}

label {
    font-weight: 600;
    display: block;
    margin-bottom: 8px;
}

input, textarea {
    width: 100%;
    padding: 14px;
    border-radius: 14px;
    border: 1px solid #e5e7eb;
    font-size: 15px;
}

textarea {
    resize: none;
    height: 90px;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: #2563eb;
}

/* PAYMENT GRID */
.payment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.payment-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    border: 2px solid #e5e7eb;
    border-radius: 16px;
    cursor: pointer;
    font-weight: 600;
    color: #374151;
    transition: 0.3s;
}

.payment-card input {
    display: none;
}

.payment-card:hover {
    border-color: #2563eb;
    color: #2563eb;
}

.payment-card input:checked + span {
    color: #2563eb;
}

/* BUTTON */
.btn-submit {
    width: 100%;
    padding: 15px;
    border-radius: 30px;
    background: #2563eb;
    color: #ffffff;
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.btn-submit:hover {
    background: #1e40af;
}

/* FOOTER */
footer {
    text-align: center;
    color: #6b7280;
    margin-bottom: 30px;
}

/* RESPONSIVE */
@media (max-width: 600px) {
    .order {
        margin: 40px 20px;
        padding: 30px;
    }

    .payment-grid {
        grid-template-columns: 1fr;
    }
}