:root {
  /* Palette */
  --palette-charcoal: #353e43;
  --palette-teal: #436a6b;
  --palette-steel: #91a0bd;
  --palette-plum: #61617a;

  /* Page */
  --bg: linear-gradient(150deg, rgba(145, 160, 189, 0.22) 0%, #ffffff 55%, rgba(97, 97, 122, 0.14) 100%);
  --card-bg: #ffffff;
  --card-border: rgba(53, 62, 67, 0.1);
  --card-shadow: 0 20px 45px -20px rgba(53, 62, 67, 0.22);
  --text-primary: var(--palette-charcoal);
  --text-secondary: var(--palette-plum);
  --accent: var(--palette-teal);
  --accent-hover: var(--palette-charcoal);
  --success: var(--palette-teal);
  --error: #9a3b3b;
  --radius: 16px;
  --disabled-bg: rgba(145, 160, 189, 0.28);
  --disabled-text: var(--palette-steel);
}

/* Payment Elements custom properties are set as an inline style attribute
   directly on #payment-container in index.html (the element passed to
   paymentElement.mount()) — the SDK does not appear to pick them up from
   an external stylesheet rule targeting the same element. */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text-primary);
}

.page {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--palette-steel);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 28px;
}

.card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
}

.card-header h1 {
  font-size: 20px;
  margin: 0;
}

.amount-group {
  display: flex;
  align-items: baseline;
  gap: 5px;
}

.amount {
  font-size: 28px;
  font-weight: 700;
}

.amount-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}

#payment-container {
  min-height: 120px;
}

.pay-button {
  width: 100%;
  margin-top: 20px;
  padding: 14px 20px;
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}

.pay-button:hover:not(:disabled) {
  background: var(--accent-hover);
}

.pay-button:active:not(:disabled) {
  transform: scale(0.99);
}

.pay-button:disabled {
  background: var(--disabled-bg);
  color: var(--disabled-text);
  cursor: not-allowed;
}

/*.status {
  margin-top: 14px;
  font-size: 14px;
  min-height: 18px;
}*/

.status.error {
  color: var(--error);
}

.status.info {
  color: var(--text-secondary);
}

.status.success {
  color: var(--success);
}

.footnote {
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
}

/* Return page */
.result-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 16px;
}

.result-icon.success {
  background: rgba(67, 106, 107, 0.12);
  color: var(--success);
}

.result-icon.error {
  background: rgba(154, 59, 59, 0.12);
  color: var(--error);
}

.result-icon.pending {
  background: rgba(53, 62, 67, 0.1);
  color: var(--accent);
}

.result-title {
  text-align: center;
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 6px;
}

.result-detail {
  text-align: center;
  font-size: 14px;
  color: var(--text-secondary);
  margin: 0;
}

.result-ref {
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 18px;
  word-break: break-all;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(53, 62, 67, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 520px) {
  body {
    padding: 0;
    align-items: stretch;
    justify-content: flex-start;
    min-height: 100dvh;
  }

  .page {
    max-width: 100%;
    min-height: 100dvh;
    gap: 0;
  }

  .brand {
    padding: 20px 24px 16px;
  }

  .card {
    flex: 1;
    border-radius: 0;
    border: none;
    box-shadow: none;
    padding: 20px 24px;
  }

  .footnote {
    padding: 16px 24px 20px;
  }
}