/* ==========================================================================
   Rubikon Club — Checkout Page Styles
   ========================================================================== */

/* ---------- Page Layout ---------- */
.checkout-page {
  padding: 100px 0 120px;
  min-height: 100vh;
}

.checkout-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  transition: color .2s var(--ease);
}
.checkout-back:hover {
  color: var(--color-accent);
}

.checkout-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: 32px;
}

.checkout-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

@media (min-width: 768px) {
  .checkout-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 32px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .checkout-layout {
    grid-template-columns: 1fr 400px;
  }
}

.checkout-main {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---------- Checkout Card ---------- */
.checkout-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

@media (min-width: 768px) {
  .checkout-card { padding: 32px; }
}

.checkout-card__label {
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-dim);
  margin-bottom: 20px;
}

.checkout-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

/* ---------- Order Summary ---------- */
.checkout-order {
  margin-bottom: 24px;
}

.checkout-order__route {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.checkout-order__city {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
}

.checkout-order__arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.checkout-order__details {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  color: var(--color-text-muted);
}

.checkout-order__sep {
  color: var(--color-text-dim);
  font-size: .7rem;
}

.checkout-order__price {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.checkout-order__price-label {
  font-size: .9rem;
  color: var(--color-text-muted);
}

.checkout-order__price-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

/* ---------- Bonus Card ---------- */
.checkout-card--bonus {
  border-color: rgba(255,198,0,.15);
}

.checkout-bonus__available {
  font-size: .85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.checkout-bonus__available strong {
  color: var(--color-accent);
}

/* ---------- Toggle Switch ---------- */
.checkout-toggle {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
  flex-shrink: 0;
  cursor: pointer;
}

.checkout-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.checkout-toggle__slider {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--color-bg-card-alt);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: all .3s var(--ease);
}

.checkout-toggle__slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-text-muted);
  transition: all .3s var(--ease);
}

.checkout-toggle input:checked + .checkout-toggle__slider {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.checkout-toggle input:checked + .checkout-toggle__slider::before {
  transform: translateX(24px);
  background: #010B13;
}

/* ---------- Bonus Body (collapsible) ---------- */
.checkout-bonus__body {
  margin-top: 24px;
  overflow: hidden;
  transition: max-height .4s var(--ease), opacity .3s var(--ease), margin .3s var(--ease);
}

.checkout-bonus__body--hidden {
  max-height: 0 !important;
  opacity: 0;
  margin-top: 0;
}

/* ---------- Quick Buttons ---------- */
.checkout-bonus__quick {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.checkout-bonus__quick-btn {
  flex: 1;
  padding: 10px 8px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-card-alt);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s var(--ease);
  text-align: center;
}

.checkout-bonus__quick-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.checkout-bonus__quick-btn--active {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- Input Row ---------- */
.checkout-bonus__input-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.checkout-bonus__input-label {
  font-size: .875rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.checkout-bonus__input-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg-card-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  transition: border-color .2s var(--ease);
}

.checkout-bonus__input-wrap:focus-within {
  border-color: var(--color-accent);
}

.checkout-bonus__input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  width: 80px;
  text-align: right;
  -moz-appearance: textfield;
}

.checkout-bonus__input::-webkit-inner-spin-button,
.checkout-bonus__input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.checkout-bonus__input-currency {
  font-size: .85rem;
  color: var(--color-text-dim);
  flex-shrink: 0;
}

/* ---------- Savings Message ---------- */
.checkout-bonus__savings {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(76, 175, 80, .08);
  border: 1px solid rgba(76, 175, 80, .15);
  border-radius: var(--radius-sm);
  font-size: .875rem;
  color: #4CAF50;
  transition: all .3s var(--ease);
}

.checkout-bonus__savings strong {
  color: #4CAF50;
}

/* ---------- Summary Sidebar ---------- */
.checkout-sidebar {
  position: relative;
}

@media (min-width: 768px) {
  .checkout-sidebar {
    position: sticky;
    top: 100px;
  }
}

.checkout-card--summary {
  border-color: rgba(255,198,0,.12);
}

.checkout-summary__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  font-size: .9rem;
  color: var(--color-text-muted);
}

.checkout-summary__row--discount {
  color: #4CAF50;
}

.checkout-summary__row--total {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 14px 0 0;
}

.checkout-summary__row--total span:last-child {
  font-size: 1.4rem;
  color: var(--color-accent);
}

.checkout-summary__divider {
  height: 1px;
  background: var(--color-border);
  margin: 4px 0;
}

.checkout-summary__cashback {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 12px 16px;
  background: var(--color-accent-dim);
  border-radius: var(--radius-sm);
  font-size: .8rem;
  color: var(--color-text-muted);
}

.checkout-summary__cashback strong {
  color: var(--color-accent);
}

.checkout-summary__cashback svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

/* ---------- Pay Button ---------- */
.checkout-pay-btn {
  width: 100%;
  margin-top: 24px;
  padding: 16px 32px;
  font-size: 1.05rem;
}

/* ---------- Sticky Mobile Bottom Bar ---------- */
.checkout-sticky {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(13, 24, 32, .95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-border);
  transform: translateY(100%);
  transition: transform .3s var(--ease);
}

.checkout-sticky--visible {
  transform: translateY(0);
}

.checkout-sticky__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.checkout-sticky__label {
  font-size: .75rem;
  color: var(--color-text-dim);
}

.checkout-sticky__amount {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-accent);
}

.checkout-sticky__btn {
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .checkout-sticky {
    display: none;
  }
}

/* ---------- Free ticket highlight ---------- */
.checkout-summary__row--total span:last-child.is-free {
  position: relative;
}

.checkout-summary__row--total span:last-child.is-free::after {
  content: 'Безкоштовно!';
  display: block;
  font-size: .85rem;
  font-weight: 700;
  color: #4CAF50;
  margin-top: 4px;
  animation: free-pulse 1.5s ease-in-out 2;
}

@keyframes free-pulse {
  0%, 100% { text-shadow: none; }
  50% { text-shadow: 0 0 12px rgba(76, 175, 80, .4); }
}

/* ---------- Smooth transitions ---------- */
.checkout-card,
.checkout-bonus__savings,
.checkout-summary__row--discount {
  transition: all .3s var(--ease);
}

.checkout-summary__row--discount.hidden {
  display: none;
}

/* ---------- Loading State ---------- */
.checkout-state {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 100px;
}
.checkout-loading {
  text-align: center;
}
.checkout-loading__spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 20px;
}
.checkout-loading__text {
  font-size: .95rem;
  color: var(--color-text-muted);
}

/* ---------- Error State ---------- */
.checkout-error {
  text-align: center;
  max-width: 400px;
  margin: 0 auto;
}
.checkout-error__icon {
  color: var(--color-warning);
  margin-bottom: 20px;
}
.checkout-error__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.checkout-error__message {
  font-size: .9rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}