/* ──────────────────────────────────────
   Card-Form — PCI DSS CDE payment form
   Vanilla CSS, no frameworks
   ────────────────────────────────────── */

:root {
  --color-bg: #f5f5f7;
  --color-card: #ffffff;
  --color-primary: #1a73e8;
  --color-primary-hover: #1557b0;
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-border: #d1d5db;
  --color-border-focus: #1a73e8;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --transition: 0.2s ease;
}

/* ── Reset ── */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── Base ── */

html {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ── Pages ── */

.page {
  width: 100%;
  max-width: 480px;
}

/* ── Card container ── */

.card {
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 24px;
}

/* ── Logo ── */

.logo {
  text-align: center;
  margin-bottom: 24px;
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 1px;
}

/* ── Payment info ── */

.payment-info {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.payment-merchant {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}

.payment-amount {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
}

/* ── Form ── */

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.form-input-wrap {
  position: relative;
}

.form-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 16px; /* Prevents iOS zoom */
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-card);
  transition: border-color var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.form-input.input-error {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

.form-input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-input-card {
  padding-right: 56px;
}

/* ── Cardholder name — uppercase ── */

.form-input-cardholder {
  text-transform: uppercase;
}

/* ── Card brand icon ── */

.brand-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 24px;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.brand-visa { background-image: url('../img/visa.svg'); }
.brand-mastercard { background-image: url('../img/mastercard.svg'); }
.brand-uzcard { background-image: url('../img/uzcard.png'); }
.brand-humo { background-image: url('../img/humo.png'); }

/* Brand out of scope hint (BIN not in supportedBrands) */
.brand-out-of-scope {
  opacity: 0.3;
  filter: grayscale(100%);
}

/* ── Row (expiry + cvv) ── */

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group {
  flex: 1;
}

/* ── CVV mask ── */

.form-input-cvv {
  -webkit-text-security: disc;
  font-family: monospace;
  letter-spacing: 4px;
}

/* ── Field errors ── */

.field-error {
  font-size: 12px;
  color: var(--color-error);
  margin-top: 4px;
}

/* ── Form inline error ── */

.form-error {
  font-size: 14px;
  color: var(--color-error);
  background: var(--color-error-bg);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  text-align: center;
}

/* ── Pay button ── */

.pay-btn {
  width: 100%;
  height: 52px;
  margin-top: 8px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.pay-btn:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.pay-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* ── Spinner ── */

.spinner {
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.spinner-large {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
}

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

/* ── Secure badge ── */

.secure-badge {
  text-align: center;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.secure-badge-text {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.secure-badge-desc {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

/* ── Card brands footer ── */

.card-brands {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 16px;
}

.card-brands img {
  height: 24px;
  opacity: 0.5;
}

/* ── Brand hint text ── */

.brand-hint {
  text-align: center;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 6px;
}

/* ── Loading page ── */

.loading-container {
  text-align: center;
  padding: 40px 24px;
}

.loading-container .spinner-large {
  margin: 24px auto 0;
}

/* ── Processing page ── */

.processing-container {
  text-align: center;
  padding: 40px 24px;
}

.processing-container .spinner-large {
  margin: 24px auto 16px;
}

.processing-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ── Error page ── */

.error-container {
  text-align: center;
  padding: 40px 24px;
}

.error-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.error-text {
  font-size: 16px;
  color: var(--color-text);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* ── Secondary button (scope mismatch, etc.) ── */

.secondary-btn {
  display: inline-block;
  padding: 12px 32px;
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-primary);
  font-size: 15px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
}

.secondary-btn:hover {
  background: var(--color-primary);
  color: #ffffff;
}

/* ── 3DS iframe (removed — redirect-only model) ── */

/* ── Responsive ── */

@media (max-width: 520px) {
  .card {
    padding: 24px 16px;
    border-radius: var(--radius-sm);
  }

  .payment-amount {
    font-size: 24px;
  }
}