.checkout-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 75% 12%, rgba(20, 119, 255, .12), transparent 28rem),
    var(--bg);
}
.checkout-main { padding: 74px 0 110px; }
.checkout-heading { max-width: 700px; margin-bottom: 34px; }
.checkout-heading h1 { margin: 7px 0 12px; font: 700 clamp(2.25rem,5vw,4rem)/1.02 'Space Grotesk',sans-serif; letter-spacing: -.055em; }
.checkout-heading > p:last-child { color: var(--muted); }
.checkout-layout { display: grid; grid-template-columns: minmax(0,1.65fr) minmax(310px,.75fr); gap: 24px; align-items: start; }
.cart-panel,.order-summary,.success-card {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(18,35,58,.92), rgba(8,20,36,.96));
  box-shadow: 0 30px 80px rgba(0,0,0,.22);
}
.cart-panel { min-height: 430px; border-radius: 22px; overflow: hidden; }
.panel-heading { display: flex; justify-content: space-between; gap: 20px; padding: 23px 26px; border-bottom: 1px solid var(--line); }
.panel-heading h2,.order-summary h2 { font: 700 1.12rem 'Space Grotesk',sans-serif; }
.panel-heading span { color: var(--muted-2); font-size: .82rem; }
.checkout-message { min-height: 0; color: #ffd5a1; padding: 0 26px; font-size: .84rem; }
.checkout-message:not(:empty) { padding-top: 16px; }
.cart-item {
  display: grid;
  grid-template-columns: 82px minmax(180px,1fr) auto minmax(110px,auto);
  gap: 17px; align-items: center; position: relative;
  padding: 22px 26px; border-bottom: 1px solid var(--line);
}
.cart-item img { width: 82px; height: 82px; object-fit: cover; border: 1px solid var(--line); border-radius: 14px; background: #0b1e35; }
.cart-item-copy { display: grid; gap: 4px; }
.cart-item-copy span { color: var(--cyan); font-size: .67rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.cart-item-copy strong { font: 700 1rem 'Space Grotesk',sans-serif; }
.cart-item-copy small { color: var(--muted-2); font-size: .74rem; }
.quantity-control { display: inline-grid; grid-template-columns: 34px 38px 34px; align-items: center; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.quantity-control button { width: 34px; height: 38px; border: 0; color: white; background: var(--surface-2); cursor: pointer; font-size: 1rem; }
.quantity-control button:hover { background: rgba(42,134,255,.22); }
.quantity-control span { text-align: center; font-size: .8rem; font-weight: 800; }
.cart-item-price { text-align: right; font: 700 .92rem 'Space Grotesk',sans-serif; }
.remove-item { grid-column: 4; justify-self: end; border: 0; color: #ff9d9d; background: none; cursor: pointer; font-size: .72rem; }
.empty-cart { min-height: 370px; padding: 70px 24px; text-align: center; }
.empty-cart > span { display: block; color: var(--cyan); font-size: 3rem; margin-bottom: 14px; }
.empty-cart h2 { font: 700 1.45rem 'Space Grotesk',sans-serif; }
.empty-cart p { color: var(--muted); margin: 8px 0 24px; }
.order-summary { position: sticky; top: 96px; padding: 27px; border-radius: 22px; }
.order-summary h2 { margin: 6px 0 23px; }
.summary-row,.summary-total { display: flex; justify-content: space-between; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: .84rem; }
.summary-row strong { color: var(--text); }
.summary-total { margin-top: 3px; color: var(--text); font: 700 1rem 'Space Grotesk',sans-serif; }
.summary-total strong { color: white; font-size: 1.25rem; }
.price-status { min-height: 38px; margin: 16px 0 10px; color: var(--muted-2); font-size: .74rem; line-height: 1.45; }
.checkout-button { width: 100%; justify-content: center; }
.checkout-button:disabled { opacity: .52; cursor: not-allowed; filter: saturate(.5); }
.stripe-trust { display: flex; gap: 11px; margin-top: 18px; padding: 14px; border: 1px solid var(--line); border-radius: 13px; background: rgba(3,13,25,.35); }
.lock-symbol { color: var(--cyan); font-size: 1.45rem; }
.stripe-trust p { display: grid; gap: 3px; margin: 0; }
.stripe-trust strong { font-size: .75rem; }
.stripe-trust small { color: var(--muted-2); font-size: .66rem; line-height: 1.4; }
.activation-mini { display: flex; align-items: center; gap: 10px; margin-top: 14px; color: var(--muted); font-size: .7rem; line-height: 1.4; }
.activation-mini .notice-icon { width: 32px; height: 32px; flex: 0 0 32px; font-size: .67rem; }
.success-main { display: grid; min-height: calc(100vh - 80px); place-items: center; padding: 80px 20px; }
.success-card { width: min(680px,100%); padding: clamp(32px,7vw,68px); border-radius: 28px; text-align: center; }
.success-icon { display: grid; place-items: center; width: 76px; height: 76px; margin: 0 auto 24px; border: 1px solid rgba(69,226,185,.5); border-radius: 50%; color: #77f1ca; background: rgba(34,193,151,.12); font-size: 2rem; }
.success-icon.warning { color: #ffd08e; border-color: rgba(255,178,76,.5); background: rgba(255,178,76,.1); }
.success-card h1 { margin: 8px 0 13px; font: 700 clamp(2rem,6vw,3.4rem)/1.04 'Space Grotesk',sans-serif; letter-spacing: -.05em; }
.success-card > p { color: var(--muted); }
.success-details { display: grid; gap: 0; margin: 28px 0; border: 1px solid var(--line); border-radius: 15px; text-align: left; overflow: hidden; }
.success-details div { display: flex; justify-content: space-between; gap: 20px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.success-details div:last-child { border-bottom: 0; }
.success-details dt { color: var(--muted-2); }
.success-details dd { color: white; text-align: right; overflow-wrap: anywhere; }
.success-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
.success-note { margin-top: 24px; font-size: .68rem; }
@media (max-width: 820px) {
  .checkout-main { padding-top: 46px; }
  .checkout-layout { grid-template-columns: 1fr; }
  .order-summary { position: static; }
}
@media (max-width: 600px) {
  .checkout-heading { margin-bottom: 24px; }
  .cart-item { grid-template-columns: 66px 1fr auto; gap: 12px; padding: 18px; }
  .cart-item img { width: 66px; height: 66px; }
  .quantity-control { grid-column: 2; justify-self: start; }
  .cart-item-price { grid-column: 3; grid-row: 1 / span 2; align-self: end; max-width: 100px; font-size: .78rem; }
  .remove-item { grid-column: 2; justify-self: start; }
  .panel-heading { padding: 20px 18px; }
  .checkout-message { padding-left: 18px; padding-right: 18px; }
  .order-summary { padding: 22px 19px; }
}