.auth-shell {
  min-height: 100vh;
  padding: 0;
  background:
    radial-gradient(circle at 85% 12%, rgba(48, 189, 246, .11), transparent 28rem),
    radial-gradient(circle at 12% 82%, rgba(23, 178, 166, .12), transparent 26rem),
    var(--brand-soft-gray);
}

.auth-page {
  display: grid;
  width: 100%;
  min-height: 100vh;
  grid-template-rows: auto 1fr auto;
  align-items: center;
  padding: 1.25rem clamp(1rem, 4vw, 3rem);
}

.auth-topbar {
  width: min(100%, 1180px);
  margin: 0 auto;
}

.auth-topbar a,
.auth-footer a,
.auth-return a,
.field-label-row a {
  color: var(--brand-muted);
  font-size: .78rem;
  font-weight: 700;
  text-decoration: none;
}

.auth-topbar a:hover,
.auth-footer a:hover,
.auth-return a:hover,
.field-label-row a:hover {
  color: var(--brand-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.auth-card {
  width: min(100%, 450px);
  margin: 2rem auto;
  padding: clamp(1.75rem, 6vw, 3rem);
  border: 1px solid var(--brand-border);
  border-radius: 12px;
  background: var(--brand-surface);
  box-shadow: 0 24px 70px rgba(13, 27, 42, .10);
}

.auth-brand {
  margin-bottom: 2.4rem;
}

.auth-brand .brand-logo-horizontal {
  width: min(174px, 60vw);
}

.auth-card h1 {
  margin-bottom: .75rem;
  font-size: clamp(2rem, 7vw, 2.65rem);
}

.auth-intro {
  color: var(--brand-muted);
  font-size: .92rem;
  line-height: 1.6;
}

.auth-form {
  gap: 1.1rem;
  margin-top: 1.7rem;
}

.auth-form label > span:not(.field-label-row),
.field-label-row > span,
.field-label-row > label {
  color: var(--brand-navy);
  font-size: .78rem;
  font-weight: 780;
}

.field-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .4rem;
}

.field-label-row > span,
.field-label-row > label {
  margin: 0;
}

.field-label-row a {
  color: var(--brand-teal);
}

.auth-form input {
  min-height: 48px;
  border-color: #9AA8B7;
  border-radius: 5px;
  padding: .75rem .8rem;
}

.auth-form input:hover {
  border-color: #718292;
}

.auth-submit {
  min-height: 48px;
  margin-top: .2rem;
  font-size: .92rem;
}

.auth-alert,
.auth-notice {
  margin-top: 1.3rem;
  border-radius: 6px;
  font-size: .84rem;
  line-height: 1.5;
}

.auth-notice {
  padding: .85rem .95rem;
  border: 1px solid #A8DAD5;
  background: #EDFAF8;
  color: #245B57;
}

.auth-return {
  margin: 1.4rem 0 0;
  text-align: center;
}

.auth-success-action {
  margin: 1.4rem 0 0;
}

.auth-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: .45rem .8rem;
  color: var(--brand-muted);
  font-size: .74rem;
  text-align: center;
}

@media (max-width: 520px) {
  .auth-page {
    min-height: 100svh;
    padding: 1rem;
  }

  .auth-topbar {
    padding: .25rem 0;
  }

  .auth-card {
    margin: 1.5rem auto;
    padding: 1.6rem;
    border-radius: 9px;
  }

  .auth-brand {
    margin-bottom: 1.9rem;
  }

  .auth-footer span:first-child,
  .auth-footer span[aria-hidden="true"] {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .auth-card {
    scroll-behavior: auto;
  }
}