body.auth-screen-open {
  overflow: hidden;
}

.auth-screen {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: var(--nv-sp-8);
  background: var(--nv-bg);
}

.auth-screen[hidden] {
  display: none;
}

.auth-screen__shell {
  width: min(100%, 30rem);
  display: grid;
  gap: var(--nv-sp-6);
}

.auth-screen__brand {
  display: grid;
  justify-items: center;
  gap: var(--nv-sp-3);
  text-align: center;
}

.auth-screen__mark {
  width: 44px;
  height: 44px;
}

.auth-screen__name {
  margin: 0;
  font-family: var(--nv-font-display);
  font-size: clamp(2.25rem, 2rem + 0.8vw, 2.75rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--nv-text);
}

.auth-screen__tagline {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--nv-text-dim);
}

.auth-screen__card {
  background: var(--nv-surface);
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-md);
  padding: var(--nv-sp-6);
  display: grid;
  gap: var(--nv-sp-5);
  box-shadow: none;
  animation: nv-auth-rise var(--nv-ease-slow) ease both;
}

.auth-screen__tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--nv-sp-2);
}

.auth-screen__tab {
  min-height: 40px;
  padding: 0 var(--nv-sp-3);
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-sm);
  background: transparent;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--nv-text-muted);
  transition: background var(--nv-ease), border-color var(--nv-ease), color var(--nv-ease);
}

.auth-screen__tab[aria-selected="true"] {
  background: var(--moss);
  border-color: var(--moss);
  color: var(--paper);
}

.auth-screen__panel {
  display: grid;
  gap: var(--nv-sp-4);
}

.auth-screen__panel[hidden] {
  display: none;
}

.auth-screen__field {
  display: grid;
  gap: var(--nv-sp-2);
}

.auth-screen__label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--nv-text-dim);
}

.auth-screen__input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--nv-divider);
  border-radius: var(--nv-r-sm);
  background: var(--paper);
  padding: 0 var(--nv-sp-3);
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--nv-text);
}

/* Button visuals previously inherited from the old onboarding's
   .onboard-cta, folded in here when that flow was replaced. */
.auth-screen__submit {
  justify-content: center;
  width: 100%;
  min-height: 40px;
  padding: var(--nv-sp-2) var(--nv-sp-5);
  border-radius: var(--nv-r-md);
  background: var(--moss);
  color: var(--nv-text-on-accent);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  font-weight: 500;
  transition: opacity var(--nv-ease);
}

.auth-screen__submit:hover { opacity: 0.85; }

.auth-screen__submit:focus-visible {
  outline: none;
  box-shadow: none;
  border: 1px solid var(--ochre);
}

.auth-screen__submit:disabled {
  opacity: 0.6;
  cursor: wait;
}

.auth-screen__status {
  min-height: 22px;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--nv-text-dim);
}

@keyframes nv-auth-rise {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .auth-screen__card,
  .auth-screen__tab {
    animation: none;
    transition: none;
  }
}