/**
 * Join Form Module — RFDD.org (S3 Membership)
 * Sporty neon signup card, matches login-modal / sponsor-form aesthetic.
 */
.join {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 20px 60px;
}

.join__card {
  width: 100%;
  max-width: 440px;
  background: var(--rfdd-dark-card);
  border: 1px solid var(--rfdd-border);
  border-radius: var(--rfdd-radius-lg);
  padding: 40px 32px;
  box-shadow: var(--rfdd-glow-green);
  position: relative;
  overflow: hidden;
}
.join__card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--rfdd-gradient-wide);
}

.join__header { text-align: center; margin-bottom: 28px; }
.join__logo {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  font-family: var(--rfdd-font-display);
  font-size: 28px;
  color: var(--rfdd-dark);
  background: var(--rfdd-gradient);
  border-radius: 16px;
  box-shadow: var(--rfdd-glow-green);
}
.join__title { font-size: clamp(28px, 5vw, 38px); margin-bottom: 8px; }
.join__subtitle { color: var(--rfdd-text-secondary); font-size: 15px; }

.join__form { display: flex; flex-direction: column; }

.join__label {
  font-family: var(--rfdd-font-nav);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--rfdd-text-secondary);
  margin: 16px 0 6px;
}

.join__input {
  width: 100%;
  padding: 13px 15px;
  background: var(--rfdd-dark-surface);
  border: 1px solid var(--rfdd-border);
  border-radius: var(--rfdd-radius-sm);
  color: var(--rfdd-text-primary);
  font-family: var(--rfdd-font-body);
  font-size: 15px;
  transition: border-color var(--rfdd-transition), box-shadow var(--rfdd-transition);
}
.join__input:focus {
  outline: none;
  border-color: var(--rfdd-border-hover);
  box-shadow: 0 0 0 3px rgba(57, 255, 20, 0.12);
}
.join__input::placeholder { color: var(--rfdd-text-muted); }

.join__handle-wrap { position: relative; display: flex; align-items: center; }
.join__handle-at {
  position: absolute;
  left: 15px;
  color: var(--rfdd-neon-green);
  font-weight: 600;
  pointer-events: none;
}
.join__input--handle { padding-left: 30px; }

.join__hint { font-size: 12px; color: var(--rfdd-text-muted); margin-top: 6px; }

.join__check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 20px 0 4px;
  font-size: 13px;
  color: var(--rfdd-text-secondary);
  cursor: pointer;
  line-height: 1.4;
}
.join__check input {
  width: 18px;
  height: 18px;
  margin-top: 1px;
  accent-color: var(--rfdd-neon-green);
  flex-shrink: 0;
}

.join__submit {
  margin-top: 22px;
  padding: 14px;
  border: none;
  border-radius: var(--rfdd-radius-sm);
  background: var(--rfdd-gradient);
  color: var(--rfdd-dark);
  font-family: var(--rfdd-font-nav);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--rfdd-transition), box-shadow var(--rfdd-transition);
}
.join__submit:hover:not(:disabled) { transform: translateY(-1px); box-shadow: var(--rfdd-glow-green); }
.join__submit:disabled { opacity: 0.6; cursor: not-allowed; }

.join__toggle { text-align: center; margin-top: 20px; font-size: 14px; color: var(--rfdd-text-secondary); }
.join__toggle a { margin-left: 6px; font-weight: 600; }

.join__note {
  text-align: center;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--rfdd-border);
  font-size: 12px;
  color: var(--rfdd-text-muted);
}

.join__error,
.join__notice {
  display: none;
  padding: 11px 14px;
  border-radius: var(--rfdd-radius-sm);
  font-size: 14px;
  margin-bottom: 4px;
}
.join__error {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #fca5a5;
}
.join__notice {
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid var(--rfdd-border-hover);
  color: var(--rfdd-neon-green);
}