.checkout-page,
.checkout-confirmation {
    --checkout-yellow: #ffd400;
    --checkout-red: #d90000;
    --checkout-black: #111;
    --checkout-cream: #fff8de;
}

.checkout-page {
    width: min(1180px, calc(100% - 40px));
    margin: 42px auto 82px;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(380px, .85fr);
    align-items: start;
    gap: 42px;
}
.checkout-explanation { padding: clamp(28px, 5vw, 54px); border: 6px solid var(--checkout-black); background: var(--checkout-yellow); box-shadow: 12px 12px 0 var(--checkout-red); }
.checkout-kicker { color: var(--checkout-red); font: 900 1rem 'Oswald', sans-serif; letter-spacing: .06em; }
.checkout-explanation h1 { margin: 10px 0 18px; font: 400 clamp(3.5rem, 7vw, 6rem)/.86 'Bebas Neue', sans-serif; }
.checkout-course-name { margin: 0; font: 900 1.35rem 'Oswald', sans-serif; }
.checkout-access-note { margin-top: 18px; padding: 14px; border-left: 6px solid var(--checkout-red); background: var(--checkout-cream); }
.checkout-access-note strong,
.checkout-access-note span { display: block; }
.checkout-access-note span { margin-top: 3px; }
.checkout-steps { margin: 28px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; list-style: none; }
.checkout-steps li { min-height: 92px; padding: 13px; border: 3px solid var(--checkout-black); background: var(--checkout-cream); display: flex; align-items: center; gap: 12px; box-sizing: border-box; font-weight: 750; }
.checkout-steps strong { width: 38px; height: 38px; border-radius: 50%; background: var(--checkout-red); color: #fff; display: grid; place-items: center; flex: 0 0 auto; font: 900 1.2rem 'Oswald', sans-serif; }
.checkout-stop-warning { margin: 26px 0 0; padding: 15px; border: 4px solid var(--checkout-black); background: var(--checkout-red); color: #fff; font: 900 1.05rem 'Oswald', sans-serif; text-align: center; }

.checkout-box { padding: 30px; border: 5px solid var(--checkout-black); background: #fff; box-shadow: 9px 9px 0 var(--checkout-black); position: sticky; top: 112px; }
.checkout-price-summary { margin-bottom: 24px; padding-bottom: 20px; border-bottom: 4px solid var(--checkout-black); text-align: center; }
.checkout-price-summary > span { display: block; color: var(--checkout-red); font: 900 1rem 'Oswald', sans-serif; }
.checkout-price-summary > strong { display: block; color: var(--checkout-black); font: 400 4rem 'Bebas Neue', sans-serif; }
.price-breakdown,
.coupon-message { margin: 8px 0 16px; color: #444; font-weight: 700; text-align: center; }
.checkout-field { margin-bottom: 16px; }
.checkout-field label { display: block; margin-bottom: 6px; font-weight: 850; }
.checkout-field input,
.discount-group input { width: 100%; min-height: 48px; padding: 11px 12px; border: 3px solid var(--checkout-black); border-radius: 0; background: var(--checkout-cream); box-sizing: border-box; font: 600 1rem 'Inter', sans-serif; }
.discount-group { margin: 22px 0 8px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.discount-group input { text-transform: uppercase; }
.discount-group button { padding: 10px 16px; border: 3px solid var(--checkout-black); background: var(--checkout-yellow); color: var(--checkout-black); font: 900 1rem 'Oswald', sans-serif; cursor: pointer; }
.discount-group button:hover { background: var(--checkout-black); color: var(--checkout-yellow); }
.checkout-create-reference,
.checkout-whatsapp { width: 100%; min-height: 56px; padding: 14px 18px; border: 4px solid var(--checkout-black); background: var(--checkout-red); color: #fff; box-shadow: 5px 5px 0 var(--checkout-black); display: flex; align-items: center; justify-content: center; box-sizing: border-box; font: 900 1.25rem 'Oswald', sans-serif; text-align: center; text-decoration: none; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease; }
.checkout-create-reference:hover,
.checkout-whatsapp:hover { transform: translate(2px, 2px); box-shadow: 3px 3px 0 var(--checkout-black); }
.checkout-trust-copy { margin: 18px 0 0; color: #555; font-size: .86rem; font-weight: 650; line-height: 1.5; text-align: center; }
.checkout-error,
.field-validation-error { color: #a00000; font-weight: 750; }

.checkout-confirmation { width: min(1080px, calc(100% - 40px)); margin: 42px auto 82px; display: grid; grid-template-columns: 1fr 1fr; gap: 34px; align-items: start; }
.confirmation-ticket,
.confirmation-payment { padding: clamp(28px, 4vw, 44px); border: 5px solid var(--checkout-black); background: var(--checkout-cream); box-shadow: 9px 9px 0 var(--checkout-black); }
.confirmation-ticket { background: var(--checkout-yellow); }
.confirmation-stamp { display: inline-block; padding: 7px 12px; border: 3px solid var(--checkout-black); background: var(--checkout-red); color: #fff; font: 900 1rem 'Oswald', sans-serif; transform: rotate(-2deg); }
.confirmation-ticket h1,
.confirmation-payment h2 { margin: 18px 0 12px; font: 400 clamp(2.8rem, 5vw, 4.5rem)/.9 'Bebas Neue', sans-serif; }
.confirmation-ticket > p { font-weight: 750; line-height: 1.5; }
.purchase-reference { display: block; margin: 24px 0; padding: 16px; border: 4px dashed var(--checkout-black); background: #fff; overflow-wrap: anywhere; font: 900 1.8rem monospace; text-align: center; letter-spacing: .08em; }
.confirmation-ticket dl { margin: 0; display: grid; grid-template-columns: minmax(120px, max-content) 1fr; gap: 12px 18px; }
.confirmation-ticket dt { font-weight: 900; }
.confirmation-ticket dd { margin: 0; overflow-wrap: anywhere; }
.confirmation-payment > span { color: var(--checkout-red); font: 900 1rem 'Oswald', sans-serif; }
.payment-owner { font-weight: 800; }
.confirmation-payment ul { margin: 24px 0; padding: 0; display: grid; gap: 12px; list-style: none; }
.confirmation-payment li { padding: 14px; border-left: 6px solid var(--checkout-red); background: #fff; }
.confirmation-payment li strong,
.confirmation-payment li span { display: block; }
.confirmation-payment li span { margin-top: 5px; overflow-wrap: anywhere; font-weight: 650; }
.checkout-whatsapp { background: #168f3b; }
.confirmation-activation { margin: 20px 0 0; padding: 14px; border: 3px solid var(--checkout-red); font-weight: 850; line-height: 1.5; text-align: center; }

@media (max-width: 900px) {
    .checkout-page,
    .checkout-confirmation { grid-template-columns: 1fr; }
    .checkout-box { position: static; }
}

@media (max-width: 560px) {
    .checkout-page,
    .checkout-confirmation { width: min(100% - 24px, 1180px); margin-top: 20px; }
    .checkout-explanation,
    .checkout-box,
    .confirmation-ticket,
    .confirmation-payment { padding: 24px 18px; box-shadow: 7px 7px 0 var(--checkout-black); }
    .checkout-steps { grid-template-columns: 1fr; }
    .discount-group { grid-template-columns: 1fr; }
    .discount-group button { min-height: 48px; }
    .confirmation-ticket dl { grid-template-columns: 1fr; gap: 4px; }
    .confirmation-ticket dd { margin-bottom: 10px; }
}