.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at top right, rgba(58, 122, 122, 0.12), transparent 34%),
    linear-gradient(180deg, #f9fafb 0%, #eef4f4 100%);
}

.auth-card {
  width: min(100%, 640px);
  padding: 26px;
  border-radius: 18px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--gaiah-medium);
  font-size: 0.9rem;
  font-weight: 800;
  text-decoration: none;
}

.back-link:hover {
  color: var(--gaiah-deep-teal);
}

.brand-link {
  display: block;
  margin-bottom: 18px;
  color: var(--gaiah-primary);
  font-size: 2rem;
  font-weight: 900;
  text-decoration: none;
}

.auth-heading h1 {
  margin: 0 0 8px;
  color: var(--gaiah-primary);
  font-size: 1.8rem;
}

.auth-heading p {
  margin: 0 0 20px;
  color: var(--gaiah-medium);
  font-weight: 700;
  line-height: 1.7;
}

.auth-form {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.auth-form label {
  display: grid;
  gap: 7px;
  color: var(--gaiah-medium);
  font-size: 0.9rem;
  font-weight: 850;
}

.auth-form input {
  min-height: 46px;
  padding: 11px 13px;
  border: 1px solid var(--gaiah-border);
  border-radius: 12px;
  background: #fff;
  color: var(--gaiah-primary);
  font: inherit;
}

.auth-form input:focus {
  outline: 0;
  border-color: var(--gaiah-teal);
  box-shadow: 0 0 0 3px rgba(58, 122, 122, 0.12);
}

.submit-button {
  width: 100%;
  margin-top: 6px;
}

.auth-links {
  display: grid;
  gap: 9px;
  margin-top: 18px;
  text-align: center;
}

.auth-links a {
  color: var(--gaiah-deep-teal);
  font-size: 0.92rem;
  font-weight: 850;
  text-decoration: none;
}

.auth-links a:hover {
  text-decoration: underline;
}

@media (max-width: 640px) {
  .auth-shell {
    padding: 14px;
  }

  .auth-card {
    padding: 20px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }
}