.auth-shell {
  display: grid;
  width: var(--container);
  min-height: 100vh;
  margin: 0 auto;
  padding: 140px 0 56px;
  place-items: center;
}

.auth-card {
  display: grid;
  width: min(760px, 100%);
  gap: 26px;
  padding: clamp(22px, 4vw, 34px);
  border: var(--border-width) solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--panel-background);
  box-shadow: var(--shadow-hard);
}

.auth-card h1 {
  margin-bottom: 12px;
}

.auth-lead {
  margin-bottom: 0;
  font-size: 1.12rem;
}

.auth-tabs {
  display: flex;
  gap: 10px;
  border-bottom: 4px solid var(--color-ink);
}

.auth-tab {
  min-height: 48px;
  margin-bottom: -4px;
  padding: 0 18px;
  border: var(--border-width-heavy) solid var(--color-ink);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--card-background-accent);
  color: var(--color-ink);
  font: 900 0.9rem var(--font-body);
  text-transform: uppercase;
}

.auth-tab:nth-child(2) {
  background: var(--card-background-secondary);
}

.auth-tab.is-active {
  background: var(--card-background-strong);
  color: var(--color-cream);
}

.auth-form {
  display: grid;
  gap: 20px;
}

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

.social-login {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.social-login a {
  display: grid;
  min-height: 48px;
  place-items: center;
  border: var(--border-width) solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--card-background-secondary);
  box-shadow: 4px 4px 0 var(--color-ink);
  font-weight: 900;
  text-transform: uppercase;
}

.social-login a:nth-child(2) {
  background: var(--card-background-accent);
}

.social-login a:nth-child(3) {
  background: var(--color-ink);
  color: var(--color-cream);
}

.social-login a:nth-child(4) {
  background: var(--card-background-strong);
  color: var(--color-cream);
}

:root[data-theme="classic"] .social-login a:nth-child(3),
:root[data-theme="classic"] .social-login a:nth-child(4) {
  color: #ffffff;
}

.auth-message {
  min-height: 24px;
  margin: 0;
  color: var(--color-violet);
  font-weight: 900;
}

.account-details {
  display: grid;
  gap: 12px;
  padding: 18px;
  border: var(--border-width) solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--card-background-secondary);
}

.account-avatar {
  width: 132px;
  aspect-ratio: 1;
  object-fit: contain;
  border: var(--border-width) solid var(--color-ink);
  border-radius: 50%;
  background: var(--panel-background);
  box-shadow: 5px 5px 0 var(--color-ink);
}

.account-details[hidden] {
  display: none;
}

.account-details p {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin: 0;
}

.account-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.profile-form {
  display: grid;
  gap: 20px;
  padding: 20px;
  border: var(--border-width) solid var(--color-ink);
  border-radius: var(--radius-sm);
  background: var(--card-background-accent);
  box-shadow: 6px 6px 0 var(--color-ink);
}

@media (max-width: 680px) {
  .social-login,
  .auth-tabs {
    grid-template-columns: 1fr;
  }

  .social-login {
    grid-template-columns: 1fr 1fr;
  }
}

.auth-tab:nth-child(3) {
  background: var(--card-background);
}

@media (max-width: 680px) {
  .auth-tabs {
    flex-wrap: wrap;
    border-bottom-width: 0;
  }

  .auth-tab {
    flex: 1 1 100%;
    margin-bottom: 0;
    border-radius: var(--radius-sm);
  }
}