.auth {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(37, 99, 235, 0.12), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(59, 130, 246, 0.1), transparent 55%),
    var(--bg);
}

.auth__panel {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.card {
  width: 100%;
  max-width: 380px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 34px 30px;
  box-shadow: var(--shadow);
}
.card__head { margin-bottom: 26px; }
.card__title { margin: 0 0 6px; font-size: 24px; font-weight: 700; }
.card__sub { margin: 0; color: var(--ink-3); font-size: 14px; }

.form { display: flex; flex-direction: column; gap: 18px; }
.form .btn--primary { margin-top: 4px; width: 100%; }

@media (max-width: 420px) {
  .auth { padding: 16px; }
  .card { padding: 28px 20px; border-radius: 14px; }
  .card__title { font-size: 22px; }
}