.auth-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(212, 175, 55, 0.12), transparent 32%),
    radial-gradient(circle at bottom right, rgba(4, 21, 37, 0.1), transparent 34%),
    var(--surface);
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: var(--space-5);
}

.auth-card {
  width: min(100%, 540px);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(4, 21, 37, 0.08);
  border-radius: 28px;
  box-shadow: var(--shadow-ambient);
  padding: 42px;
  backdrop-filter: blur(10px);
}

.auth-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--primary);
  margin-bottom: 28px;
}

.auth-brand-mark {
  width: auto;
  height: 46px;
}

.auth-brand-text {
  font-family: var(--font-academic);
  font-size: 1.9rem;
  font-weight: 500;
}

.auth-kicker {
  color: var(--gold-amber);
  margin-bottom: 12px;
}

.auth-title {
  margin-bottom: 12px;
}

.auth-copy {
  color: rgba(4, 21, 37, 0.72);
  margin-bottom: 22px;
}

.auth-google {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.auth-google-label {
  color: var(--gold-amber);
}

.auth-google-button {
  min-height: 44px;
}

.auth-google-copy {
  color: rgba(4, 21, 37, 0.62);
  font-family: var(--font-precision);
  font-size: 0.9rem;
  line-height: 1.5;
}

.auth-google-error {
  background: rgba(115, 92, 0, 0.08);
  border: 1px solid rgba(115, 92, 0, 0.18);
  color: var(--gold-amber);
  border-radius: 16px;
  padding: 10px 12px;
  font-family: var(--font-precision);
  font-size: 0.9rem;
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 8px 0 18px;
  color: rgba(4, 21, 37, 0.46);
  font-family: var(--font-precision);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(4, 21, 37, 0.1);
}

.auth-alert {
  background: rgba(115, 92, 0, 0.08);
  border: 1px solid rgba(115, 92, 0, 0.18);
  color: var(--gold-amber);
  border-radius: 16px;
  padding: 12px 14px;
  margin-bottom: 18px;
  font-family: var(--font-precision);
  font-size: 0.92rem;
}

.auth-form {
  display: grid;
  gap: 16px;
}

.auth-field {
  display: grid;
  gap: 8px;
}

.auth-field input {
  width: 100%;
  border: 1px solid rgba(4, 21, 37, 0.12);
  border-radius: 16px;
  background: var(--surface-white);
  color: var(--primary);
  font-family: var(--font-precision);
  font-size: 0.98rem;
  padding: 14px 16px;
}

.auth-field input:focus {
  outline: none;
  border-color: rgba(4, 21, 37, 0.36);
  box-shadow: 0 0 0 4px rgba(4, 21, 37, 0.08);
}

.auth-submit {
  justify-content: center;
  margin-top: 8px;
}

.auth-hint {
  margin-top: 18px;
  font-family: var(--font-precision);
  font-size: 0.9rem;
  color: rgba(4, 21, 37, 0.65);
}

.auth-hint code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

@media (max-width: 640px) {
  .auth-shell {
    padding: var(--space-3);
  }

  .auth-card {
    padding: 28px 22px;
    border-radius: 22px;
  }

  .auth-brand-text {
    font-size: 1.55rem;
  }
}