/* ═══════════════════════════════════════════════
   DiagnosKit — Tunnel de commande
   ═══════════════════════════════════════════════ */

.checkout-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 35, 50, 0.55);
  backdrop-filter: blur(4px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s, visibility 0.3s;
}
.checkout-overlay.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.checkout-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -48%) scale(0.97);
  width: min(520px, calc(100vw - 32px));
  max-height: min(90vh, 720px);
  background: #fff;
  z-index: 1101;
  border-radius: var(--radius-xl, 16px);
  box-shadow: var(--shadow-xl, 0 20px 50px rgba(26, 35, 50, 0.2));
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.35s var(--ease-out, cubic-bezier(0.16, 1, 0.3, 1)), visibility 0.3s;
}
.checkout-panel.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.checkout-header {
  padding: 20px 24px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  border-bottom: 1px solid var(--gray-100);
}
.checkout-header h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0;
}
.checkout-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--gray-500);
  cursor: pointer;
  background: none;
  border: none;
  transition: all 0.15s;
}
.checkout-close:hover { background: var(--gray-100); color: var(--gray-900); }

.checkout-steps {
  display: flex;
  gap: 0;
  padding: 12px 24px 16px;
  border-bottom: 1px solid var(--gray-100);
  flex-shrink: 0;
}
.checkout-step-indicator {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-400);
}
.checkout-step-indicator span {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
}
.checkout-step-indicator.active { color: var(--blue-dark); }
.checkout-step-indicator.active span {
  background: var(--blue);
  color: #fff;
}
.checkout-step-indicator.done { color: var(--green-dark); }
.checkout-step-indicator.done span {
  background: var(--green-light);
  color: var(--green-dark);
}

.checkout-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}
.checkout-pane { display: none; flex-direction: column; gap: 16px; }
.checkout-pane.active { display: flex; }

.checkout-lead {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
  margin: 0 0 4px;
}

.checkout-summary {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.checkout-summary-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  background: var(--gray-100);
  border-radius: var(--radius-md);
  font-size: 13px;
}
.checkout-summary-item-name {
  font-weight: 600;
  color: var(--gray-900);
}
.checkout-summary-item-meta { color: var(--gray-500); font-size: 12px; margin-top: 2px; }
.checkout-summary-item-price {
  font-weight: 700;
  color: var(--green);
  white-space: nowrap;
}
.checkout-summary-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  margin-top: 4px;
  border-top: 2px solid var(--gray-100);
  font-size: 15px;
}
.checkout-summary-total strong {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--green);
}

.checkout-payment-card {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: var(--blue-light);
  border: 1px solid var(--blue-mid, #c2e8f6);
  border-radius: var(--radius-md);
}
.checkout-payment-icon { font-size: 28px; line-height: 1; flex-shrink: 0; }
.checkout-payment-card strong { display: block; font-size: 14px; color: var(--gray-900); margin-bottom: 4px; }
.checkout-payment-card p { font-size: 13px; color: var(--gray-600, var(--gray-500)); line-height: 1.5; margin: 0; }

.checkout-confirm-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--gray-700);
  line-height: 1.5;
  cursor: pointer;
}
.checkout-confirm-label input { margin-top: 3px; flex-shrink: 0; accent-color: var(--blue); }

.checkout-success {
  text-align: center;
  padding: 16px 0 8px;
}
.checkout-success-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  background: var(--green-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
}
.checkout-success h4 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 8px;
}
.checkout-success-num {
  font-size: 16px;
  color: var(--gray-700);
  margin: 0 0 12px;
}
.checkout-success-num strong {
  color: var(--blue-dark);
  font-family: monospace;
  font-size: 17px;
}
.checkout-success-text {
  font-size: 14px;
  color: var(--gray-500);
  line-height: 1.6;
  margin: 0;
}

.checkout-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.checkout-footer .btn-primary { margin-left: auto; }

.checkout-panel.success-mode .checkout-steps,
.checkout-panel.success-mode .checkout-footer { display: none; }

@media (max-width: 480px) {
  .checkout-step-indicator { font-size: 0; gap: 0; justify-content: center; }
  .checkout-step-indicator span { font-size: 11px; }
  .checkout-header,
  .checkout-body,
  .checkout-footer,
  .checkout-steps { padding-left: 16px; padding-right: 16px; }
}