.signup-required { overflow: hidden; }
.signup-required #dashboard-shell { pointer-events: none; user-select: none; }
.signup-gate {
  position: fixed;
  inset: 0;
  z-index: 5200;
  display: grid;
  place-items: center;
  overflow-y: auto;
  padding: 24px 18px;
  background: rgba(24, 39, 31, .55);
}
.signup-gate[hidden] { display: none; }
.signup-card {
  width: min(460px, 100%);
  min-width: 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .22);
}
.signup-card h2 { margin: 8px 0 12px; font-size: 26px; line-height: 1.2; }
.signup-copy { margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.signup-card label { display: block; margin: 14px 0 6px; font-size: 13px; font-weight: 600; }
.signup-card input { width: 100%; min-width: 0; height: 44px; padding: 9px 11px; }
.signup-card button {
  width: 100%; min-height: 44px; margin-top: 22px; padding: 10px 14px;
  border: 1px solid var(--green); border-radius: 4px;
  background: var(--green); color: #fff; font-weight: 600;
}
.signup-card button:disabled { opacity: .7; cursor: wait; }
.signup-error { min-height: 18px; margin-top: 12px; color: #a33024; font-size: 13px; }
.signup-privacy { margin-top: 8px; color: var(--muted); font-size: 11px; line-height: 1.5; }
.signup-privacy a { text-decoration: underline; text-underline-offset: 2px; }
@media (max-width: 480px) { .signup-card { padding: 22px; } }
@media (max-height: 640px) { .signup-gate { align-items: start; } }