.checkout-page{
    background:#f8fafc;
    padding:80px 7%;
}

.checkout-container{
    max-width:900px;
    margin:auto;
}

.checkout-header{
    text-align:center;
    margin-bottom:40px;
}

.checkout-header h1{
    font-size:42px;
    color:#0f172a;
    margin-bottom:10px;
}

.checkout-header p{
    color:#64748b;
}

.checkout-card{
    background:white;
    padding:35px;
    border-radius:20px;
    margin-bottom:30px;
    box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

.checkout-card h2{
    margin-bottom:25px;
    color:#0f172a;
}

.form-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
}

.full-width{
    grid-column:span 2;
}

.form-group{
    display:flex;
    flex-direction:column;
}

.form-group label{
    margin-bottom:8px;
    font-weight:600;
}

.form-group input{
    padding:14px;
    border:1px solid #d1d5db;
    border-radius:10px;
    font-size:15px;
}

.checkout-item{
    display:flex;
    justify-content:space-between;
    padding:12px 0;
    border-bottom:1px solid #e5e7eb;
}

.summary-row{
    display:flex;
    justify-content:space-between;
    padding:14px 0;
}

.total-row{
    border-top:2px solid #e5e7eb;
    margin-top:10px;
    font-size:22px;
    font-weight:700;
}

.payment-btn{
    width:100%;
    border:none;
    background:#d4af37;
    color:#0f172a;
    padding:18px;
    margin-top:25px;
    border-radius:12px;
    font-size:18px;
    font-weight:700;
    cursor:pointer;
}

.payment-btn:hover{
    opacity:0.9;
}

@media(max-width:768px){

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

    .full-width{
        grid-column:span 1;
    }

}

.field-error{
    color:#ef4444;
    font-size:13px;
    margin-top:6px;
    font-weight:500;
}

.form-group input{
    transition:0.3s ease;
}

.form-group input:focus{
    outline:none;
    border-color:#d4af37;
}

#paymentMessage{
    display:none;
    margin-top:20px;
    padding:14px;
    border-radius:10px;
    background:#dcfce7;
    border:1px solid #22c55e;
    color:#15803d;
    text-align:center;
    font-weight:600;
    font-size:16px;
}