/* Mysatech payment – vanilla CSS, no Tailwind */
:root {
  --primary: #c41e3a;
  --primary-dark: #a31930;
  --primary-darker: #8b1528;
  --primary-focus: #e02445;
  --primary-muted: #b8a0a5;
  --bg-page: #f5f5f5;
  --bg-card: #ffffff;
  --text: #1a1a1a;
  --text-muted: #333333;
  --text-light: #666666;
  --border: #e5e5e5;
  --border-light: #eeeeee;
  --success: #2E6A34;
  --success-bg: #d4edda;
  --error: #a31930;
  --error-bg: #f8d7da;
  --secure-bg: rgba(196, 30, 58, 0.07);
  --secure-border: rgba(196, 30, 58, 0.15);
  --radius: 12px;
  --radius-lg: 16px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

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

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.screen {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.screen[hidden] {
  display: none !important;
}

.card {
  width: 100%;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card__header {
  padding: 16px;
  border-bottom: 1px solid var(--border-light);
  text-align: center;
}

.card__title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

/* Form */
.form {
  padding: 20px;
}

.form__section {
  margin-bottom: 20px;
}

.form__section-title {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.form__label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-light);
  margin-bottom: 4px;
}

.form__field {
  margin-bottom: 12px;
}

.form__field:last-child {
  margin-bottom: 0;
}

.form__input {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form__input::placeholder {
  color: #999;
}

.form__input:focus {
  border-color: var(--primary-focus);
  box-shadow: 0 0 0 2px rgba(196, 30, 58, 0.25);
}

.form__input.border-error {
  border-color: var(--error);
}

.form__amount-wrap {
  position: relative;
}

.form__amount-prefix {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-weight: 500;
  color: var(--text-light);
}

.form__input--amount {
  padding-left: 32px;
}

.form__quick-amounts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.quick-amount {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.quick-amount:hover {
  border-color: var(--primary-dark);
}

.quick-amount.is-selected {
  border-color: var(--primary-dark);
  background: var(--primary-dark);
  color: #fff;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form__error {
  margin: 4px 0 0;
  font-size: 0.75rem;
  color: var(--error);
  min-height: 1rem;
}

.form__error:empty {
  display: none;
}

.form__success-msg {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--success);
  padding: 8px 0;
}

.form__success-msg[hidden] {
  display: none;
}

.form__footer {
  padding-top: 8px;
}

.form__total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.form__total-label {
  font-size: 0.875rem;
  color: var(--text-light);
}

.form__total-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

/* Secure box */
.secure-box {
  display: flex;
  gap: 12px;
  padding: 12px;
  margin-bottom: 16px;
  background: var(--secure-bg);
  border: 1px solid var(--secure-border);
  border-radius: var(--radius);
}

.secure-box__icon {
  flex-shrink: 0;
  color: var(--primary);
  margin-top: 2px;
}

.secure-box__title {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary);
}

.secure-box__text {
  margin: 4px 0 0;
  font-size: 0.75rem;
  color: var(--text-light);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 20px;
  font-size: 1rem;
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s, box-shadow 0.2s;
}

.btn:focus {
  outline: none;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
}

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

.btn--primary:active:not(:disabled) {
  background: var(--primary-darker);
}

.btn--primary:focus-visible {
  box-shadow: 0 0 0 2px var(--bg-page), 0 0 0 4px var(--primary-focus);
}

.btn--primary:disabled {
  background: var(--primary-muted);
  color: #fff;
  cursor: not-allowed;
}

.btn--block {
  width: 100%;
}

.btn__icon {
  flex-shrink: 0;
}

.btn--secondary {
  background: #f0f0f0;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn--secondary:hover {
  background: #e5e5e5;
}

/* Result screens */
.result-content {
  padding: 20px;
}

.result-hero {
  text-align: center;
  margin-bottom: 20px;
}

.result-hero__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  margin-bottom: 12px;
}

.result-hero__icon--success {
  background: var(--success-bg);
  color: var(--success);
}

.result-hero__icon--failure {
  background: var(--error-bg);
  color: var(--error);
}

.result-hero__title {
  margin: 0 0 4px;
  font-size: 1.25rem;
  font-weight: 600;
}

.result-hero__title--success {
  color: var(--success);
}

.result-hero__title--failure {
  color: var(--error);
}

.result-hero__text {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-light);
}

.result-details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.result-details__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.02);
  border-bottom: 1px solid var(--border-light);
}

.result-details__row:last-child {
  border-bottom: none;
}

.result-details__row--error {
  background: var(--error-bg);
}

.result-details__label {
  font-size: 0.875rem;
  color: var(--text-light);
}

.result-details__value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

.result-details__value--amount {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-dark);
}

.result-details__value--error {
  font-weight: 600;
  color: var(--error);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.result-actions .btn {
  flex: 1;
  min-width: 120px;
}

/* Footer link */
.footer-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 16px;
  padding: 16px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

@media (min-width: 480px) {
  .footer-link {
    font-size: 13px;
  }
}

.footer-link:hover {
  color: var(--text);
}

.footer-link__muted {
  color: var(--primary-muted);
}

.footer-link__logo {
  width: 14px;
  height: 14px;
  vertical-align: middle;
  object-fit: contain;
}

.footer-link__brand {
  color: var(--success);
}