/* ─── Colibri Social Club – Membership Form ───────────────────────────────── */

:root {
  --csf-gold:      #c9a96e;
  --csf-gold-dk:   #b08a4e;
  --csf-dark:      #1a1a1a;
  --csf-mid:       #5a5550;
  --csf-muted:     #9b958e;
  --csf-border:    #e2ddd8;
  --csf-bg:        #faf8f5;
  --csf-white:     #ffffff;
  --csf-error:     #c0392b;
  --csf-success:   #2d7a47;
  --csf-radius:    3px;
  --csf-transition: 200ms ease;
}

.csf-wrapper {
  max-width: 620px;
  margin: 0 auto;
  padding: 0 16px 48px;
  font-family: 'Georgia', 'Times New Roman', serif;
  color: var(--csf-dark);
}

/* ─── Header ───────────────────────────────────────────────────────────────── */
.csf-header {
  text-align: center;
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--csf-border);
  margin-bottom: 36px;
}

.csf-eyebrow {
  display: block;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--csf-gold);
  margin-bottom: 12px;
}

.csf-title {
  margin: 0 0 10px;
  font-size: clamp(26px, 5vw, 38px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--csf-dark);
  letter-spacing: -.01em;
}

.csf-subtitle {
  margin: 0;
  font-size: 15px;
  color: var(--csf-muted);
  font-style: italic;
  line-height: 1.6;
}

/* ─── Section label ─────────────────────────────────────────────────────────── */
.csf-section-label {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--csf-gold);
  margin-bottom: 20px;
}

.csf-divider {
  border: none;
  border-top: 1px solid var(--csf-border);
  margin: 32px 0 28px;
}

/* ─── Fields ────────────────────────────────────────────────────────────────── */
.csf-field {
  margin-bottom: 22px;
}

.csf-field label {
  display: block;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--csf-mid);
  margin-bottom: 7px;
  text-transform: uppercase;
}

.csf-req  { color: var(--csf-gold); }
.csf-optional { color: var(--csf-muted); font-weight: 400; text-transform: none; font-style: italic; font-size: 12px; }

.csf-field input[type="text"],
.csf-field input[type="email"],
.csf-field input[type="url"],
.csf-field input[type="tel"] {
  width: 100%;
  box-sizing: border-box;
  padding: 13px 16px;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  color: var(--csf-dark);
  background: var(--csf-white);
  border: 1.5px solid var(--csf-border);
  border-radius: var(--csf-radius);
  outline: none;
  transition: border-color var(--csf-transition), box-shadow var(--csf-transition);
  -webkit-appearance: none;
}

.csf-field input:focus {
  border-color: var(--csf-gold);
  box-shadow: 0 0 0 3px rgba(201,169,110,.15);
}

.csf-field input.csf-invalid {
  border-color: var(--csf-error);
  box-shadow: 0 0 0 3px rgba(192,57,43,.12);
}

.csf-field input::placeholder { color: #c8c2bb; }

/* ─── Select ────────────────────────────────────────────────────────────────── */
.csf-select-wrap {
  position: relative;
}

.csf-select-wrap select {
  width: 100%;
  box-sizing: border-box;
  padding: 13px 44px 13px 16px;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  color: var(--csf-dark);
  background: var(--csf-white);
  border: 1.5px solid var(--csf-border);
  border-radius: var(--csf-radius);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--csf-transition), box-shadow var(--csf-transition);
}

.csf-select-wrap select:focus {
  border-color: var(--csf-gold);
  box-shadow: 0 0 0 3px rgba(201,169,110,.15);
}

.csf-select-arrow {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--csf-gold);
  pointer-events: none;
  line-height: 1;
}

/* ─── Radio cards ───────────────────────────────────────────────────────────── */
.csf-radio-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.csf-radio-card {
  cursor: pointer;
}

.csf-radio-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.csf-radio-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 16px 8px;
  border: 1.5px solid var(--csf-border);
  border-radius: var(--csf-radius);
  background: var(--csf-white);
  text-align: center;
  transition: border-color var(--csf-transition), background var(--csf-transition), box-shadow var(--csf-transition);
}

.csf-radio-card:hover .csf-radio-box {
  border-color: var(--csf-gold);
}

.csf-radio-card input:checked + .csf-radio-box {
  border-color: var(--csf-gold);
  background: #fdf8f1;
  box-shadow: 0 0 0 3px rgba(201,169,110,.15);
}

.csf-radio-num {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--csf-dark);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  line-height: 1;
  margin-bottom: 5px;
}

.csf-radio-card input:checked + .csf-radio-box .csf-radio-num {
  color: var(--csf-gold);
}

.csf-radio-desc {
  display: block;
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--csf-muted);
}

/* ─── Half-width fields ─────────────────────────────────────────────────────── */
.csf-field--half-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 0 !important;
}

.csf-field--half { margin-bottom: 22px !important; }

/* ─── Messages ──────────────────────────────────────────────────────────────── */
.csf-message {
  padding: 14px 18px;
  border-radius: var(--csf-radius);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 22px;
}

.csf-message--error {
  background: #fdf2f0;
  border: 1px solid #f5c6c1;
  color: var(--csf-error);
}

.csf-message--success {
  background: #f0faf4;
  border: 1px solid #a8dbb9;
  color: var(--csf-success);
}

/* ─── Submit button ─────────────────────────────────────────────────────────── */
.csf-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 28px;
  background: var(--csf-dark);
  color: var(--csf-white);
  border: none;
  border-radius: var(--csf-radius);
  font-family: 'Helvetica Neue', Arial, sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--csf-transition), transform 100ms ease;
  margin-top: 8px;
}

.csf-submit:hover:not(:disabled) {
  background: var(--csf-gold);
}

.csf-submit:active:not(:disabled) {
  transform: translateY(1px);
}

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

.csf-submit-spinner {
  display: inline-flex;
}

.csf-submit-spinner svg {
  width: 18px;
  height: 18px;
  animation: csf-spin 0.9s linear infinite;
}

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

/* ─── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .csf-header { padding: 32px 0 24px; }
  .csf-radio-group { grid-template-columns: 1fr 1fr 1fr; }
  .csf-field--half-wrap { grid-template-columns: 1fr; gap: 0; }
}