:root {
  --rf-primary: #faa51d;
  --rf-primary-dark: #5e1828;
  --rf-accent: #e8a0aa;
  --rf-bg: #282831;
  --rf-card: #ffffff;
  --rf-text: #222;
  --rf-muted: #707070;
  --rf-border: #dedede;
  --rf-success: #177245;
  --rf-danger: #b42318;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  background: var(--rf-bg);
  color: var(--rf-text);
}

.rf-wrap {
  width: min(820px, 100%);
  margin: 0 auto;
  padding: 24px 14px 50px;
}

.rf-form {
  display: grid;
  gap: 20px;
}

.rf-card {
  background: var(--rf-card);
  border: 1px solid var(--rf-border);
  border-radius: 14px;
  padding: 26px;
  box-shadow: 0 8px 24px rgba(0,0,0,.06);
}

.rf-card-head {
  margin-bottom: 22px;
}

.rf-card-head h2 {
  margin: 0 0 6px;
  font-size: 23px;
  line-height: 1.2;
}

.rf-card-head p {
  margin: 0;
  color: var(--rf-muted);
  font-size: 14px;
}

.rf-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.rf-name-row {
  grid-template-columns: 1fr 1fr;
}

.rf-field label,
.rf-donation label {
  display: block;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 7px;
}

.rf-field label span {
  color: var(--rf-primary);
}

.rf-field input,
.rf-field select,
.rf-money-input input {
  width: 100%;
  min-height: 46px;
  border: 1px solid #cfcfcf;
  border-radius: 8px;
  padding: 11px 13px;
  font-size: 15px;
  background: #fff;
  outline: none;
  transition: border .15s, box-shadow .15s;
}

.rf-field input:focus,
.rf-field select:focus,
.rf-money-input input:focus {
  border-color: var(--rf-primary);
  box-shadow: 0 0 0 3px rgba(122,32,52,.10);
}

.rf-memberships {
  display: grid;
  gap: 8px;
}

.rf-membership {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr auto;
  gap: 10px;
  align-items: center;
  border: 1px solid var(--rf-border);
  border-radius: 9px;
  padding: 13px 14px;
  cursor: pointer;
  transition: border .15s, background .15s;
}

.rf-membership:hover {
  border-color: var(--rf-accent);
  background: #fffafb;
}

.rf-membership input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.rf-check {
  width: 19px;
  height: 19px;
  border: 2px solid #aaa;
  border-radius: 50%;
  display: block;
  position: relative;
}

.rf-membership input:checked + .rf-check {
  border-color: var(--rf-primary);
}

.rf-membership input:checked + .rf-check::after {
  content: "";
  position: absolute;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--rf-primary);
  top: 3px;
  left: 3px;
}

.rf-membership-name {
  font-size: 14px;
  line-height: 1.35;
}

.rf-membership-price {
  font-weight: 700;
  white-space: nowrap;
  font-size: 14px;
}

.rf-divider {
  height: 1px;
  background: var(--rf-border);
  margin: 24px 0 16px;
}

.rf-invoice-title {
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: 12px;
}

.rf-invoice-line {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 0;
  font-size: 15px;
}

.rf-invoice-line strong {
  white-space: nowrap;
}

.rf-donation {
  margin-top: 12px;
}

.rf-money-input {
  display: grid;
  grid-template-columns: 54px 1fr;
}

.rf-money-input span {
  display: grid;
  place-items: center;
  border: 1px solid #cfcfcf;
  border-right: 0;
  border-radius: 8px 0 0 8px;
  background: #f6f6f6;
  font-size: 12px;
  font-weight: 700;
}

.rf-money-input input {
  border-radius: 0 8px 8px 0;
}

.rf-total {
  margin-top: 12px;
  padding-top: 16px;
  border-top: 2px solid var(--rf-text);
  font-size: 18px;
}

.rf-total strong {
  color: var(--rf-primary);
}

.rf-button {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: 9px;
  background: var(--rf-primary);
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  margin-top: 22px;
  transition: background .15s, transform .05s;
}

.rf-button:hover { background: var(--rf-primary-dark); }
.rf-button:active { transform: translateY(1px); }
.rf-button:disabled { opacity: .7; cursor: wait; }

.rf-spinner {
  display: none;
  width: 17px;
  height: 17px;
  border: 2px solid rgba(255,255,255,.45);
  border-top-color: #fff;
  border-radius: 50%;
  vertical-align: middle;
  animation: rfspin .7s linear infinite;
}

.rf-button.loading .rf-button-text { display: none; }
.rf-button.loading .rf-spinner { display: inline-block; }

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

.rf-secure-note {
  margin: 12px 0 0;
  text-align: center;
  color: var(--rf-muted);
  font-size: 12px;
}

.rf-message {
  display: none;
  margin-top: 18px;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 14px;
}

.rf-message.show { display: block; }
.rf-message.error {
  background: #fff0ef;
  color: var(--rf-danger);
  border: 1px solid #f1c2bd;
}
.rf-message.success {
  background: #edf9f1;
  color: var(--rf-success);
  border: 1px solid #b8dfc5;
}

@media (max-width: 620px) {
  .rf-card { padding: 20px 16px; }
  .rf-name-row { grid-template-columns: 1fr; }
  .rf-membership { grid-template-columns: 25px 1fr; }
  .rf-membership-price {
    grid-column: 2;
    font-size: 13px;
    margin-top: -5px;
  }
}