:root {
  --green: #4cad49;
  --green-hover: #3d9f3a;
  --text: #101828;
  --muted: #667085;
  --border: #d0d5dd;
  --border-focus: rgba(76,173,73,.55);
  --focus-ring: rgba(76,173,73,.15);
  --bg: #ffffff;
  --radius: 10px;
}

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

body {
  margin: 0;
  background: transparent;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

.referral-form {
  max-width: 560px;
  margin: 0 auto;
  padding: 24px 16px;
}

.referral-form h2 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--text);
}

.referral-form .form-subtitle {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 24px;
  line-height: 1.5;
}

.form-section-label {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--green);
  margin: 24px 0 12px;
  padding-bottom: 8px;
  border-bottom: 0.5px solid #e4e7ec;
}

.form-section-label:first-of-type {
  margin-top: 0;
}

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

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

.form-group.full {
  grid-column: 1 / -1;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 5px;
}

.form-group label .required {
  color: #d92d20;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-family: inherit;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #98a2b3;
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23667085' stroke-width='1.67' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}

.form-consent input[type="checkbox"] {
  margin-top: 2px;
  accent-color: var(--green);
}

.form-submit-btn {
  width: 100%;
  padding: 12px 24px;
  background: var(--green);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}

.form-submit-btn:hover {
  background: var(--green-hover);
}

.form-submit-btn:disabled {
  opacity: .6;
  cursor: not-allowed;
}

.form-success {
  text-align: center;
  padding: 48px 16px;
}

.form-success .check-icon {
  width: 56px;
  height: 56px;
  background: rgba(76,173,73,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.form-success h3 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
}

.form-success p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
}

.form-error {
  background: #fffbfa;
  border: 1px solid #fda29b;
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 16px;
  color: #7a271a;
  font-size: 13px;
  display: none;
}

.form-error.visible {
  display: block;
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .referral-form {
    padding: 16px 12px;
  }
}