.checkout-page {
    max-width: 1320px;
    margin: 0 auto;
    padding: 28px 18px 120px;
}

.checkout-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 26px;
}

    .checkout-header h2 {
        font-weight: 800;
        margin: 0;
    }

.checkout-back-btn {
    color: #1f2937;
    font-size: 28px;
    text-decoration: none;
}

.checkout-ssl {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #198754;
    font-weight: 700;
}

.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 24px;
    align-items: flex-start;
}

.checkout-main {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.checkout-card {
    background: #fff;
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
    border: 1px solid #eef2f7;
}

    .checkout-card h3 {
        font-size: 22px;
        font-weight: 800;
        margin-bottom: 18px;
    }

.checkout-warning {
    display: flex;
    gap: 12px;
    align-items: center;
    background: #fff4e8;
    color: #e87513;
    font-weight: 700;
}

.checkout-card-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.checkout-edit-link {
    color: #f97316;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.checkout-address-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkout-address-card {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 16px;
    cursor: pointer;
    transition: 0.2s;
}

    .checkout-address-card:hover {
        border-color: #198754;
        box-shadow: 0 8px 20px rgba(25, 135, 84, 0.08);
    }

    .checkout-address-card input {
        margin-top: 5px;
        accent-color: #198754;
    }

.checkout-address-top {
    display: flex;
    align-items: center;
    gap: 10px;
}

    .checkout-address-top strong {
        font-size: 17px;
    }

    .checkout-address-top span {
        background: #eaf7ef;
        color: #198754;
        font-size: 12px;
        padding: 4px 8px;
        border-radius: 999px;
        font-weight: 700;
    }

.checkout-address-content p {
    margin: 4px 0;
    color: #475569;
}

.checkout-address-content small {
    color: #64748b;
}

.checkout-empty-address {
    border: 1px dashed #cbd5e1;
    border-radius: 16px;
    padding: 18px;
    background: #f8fafc;
}

.checkout-form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.checkout-field-full {
    grid-column: 1 / -1;
}

.checkout-field label {
    font-weight: 700;
    margin-bottom: 6px;
    display: block;
}

.checkout-field .form-control {
    border-radius: 12px;
    min-height: 46px;
}

.checkout-payment-option,
.checkout-installment-option,
.checkout-check,
.checkout-contract {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    cursor: pointer;
}

    .checkout-payment-option input,
    .checkout-installment-option input {
        width: 20px;
        height: 20px;
        accent-color: #198754;
    }

.checkout-check {
    margin-top: 14px;
    color: #475569;
}

.checkout-contract {
    background: #fff;
    border-radius: 18px;
    padding: 20px;
    border: 1px solid #eef2f7;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.checkout-summary {
    position: sticky;
    top: 110px;
}

.checkout-summary-card {
    background: #fff;
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
    border: 1px solid #eef2f7;
}

    .checkout-summary-card h3 {
        font-weight: 800;
        margin-bottom: 20px;
    }

.checkout-summary-row,
.checkout-summary-total {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

    .checkout-summary-total strong {
        font-size: 20px;
    }

.checkout-submit-desktop {
    margin-top: 16px;
    min-height: 48px;
    border-radius: 12px;
    font-weight: 700;
}

.checkout-mobile-bar {
    display: none;
}

@media (max-width: 991px) {
    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .checkout-summary {
        display: none;
    }

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

    .checkout-mobile-bar {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 9999;
        background: #ffffff;
        display: grid;
        grid-template-columns: 38% 62%;
        border-top: 1px solid #e5e7eb;
        box-shadow: 0 -8px 24px rgba(0,0,0,0.12);
    }

        .checkout-mobile-bar div {
            padding: 12px 16px;
        }

        .checkout-mobile-bar span {
            display: block;
            font-size: 13px;
            color: #64748b;
        }

        .checkout-mobile-bar strong {
            font-size: 15px;
        }

        .checkout-mobile-bar button {
            border: none;
            background: #198754;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
}

@media (max-width: 576px) {
    .checkout-page {
        padding: 18px 12px 100px;
    }

    .checkout-header h2 {
        font-size: 24px;
    }

    .checkout-ssl span {
        display: none;
    }

    .checkout-card {
        padding: 18px;
        border-radius: 16px;
    }

        .checkout-card h3 {
            font-size: 20px;
        }

    .checkout-address-card {
        padding: 14px;
    }
}