.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(rgba(47, 244, 229, .06) 1px, transparent 1px) 0 0 / 44px 44px,
    radial-gradient(circle at 80% 20%, rgba(255, 75, 95, .16), transparent 28rem),
    var(--ink);
}

.auth-shell {
  width: min(1040px, 100%);
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1fr);
  gap: 1rem;
  align-items: stretch;
}

.auth-brand {
  position: fixed;
  left: 28px;
  top: 24px;
}

.auth-offer {
  align-self: center;
  padding: clamp(1.25rem, 4vw, 2.4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(21, 26, 34, .92);
  box-shadow: var(--shadow);
}

.auth-offer h1 {
  margin-bottom: 1.5rem;
  font-size: clamp(2.4rem, 5vw, 4.8rem);
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.auth-form label {
  display: grid;
  gap: .45rem;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 800;
}

.auth-form input {
  min-height: 50px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 .95rem;
  background: #080a0e;
  color: var(--text);
  font: inherit;
}

.auth-form input:focus {
  outline: 2px solid rgba(47, 244, 229, .5);
  outline-offset: 2px;
}

.check-row {
  grid-template-columns: 20px 1fr;
  align-items: start;
}

.check-row input {
  min-height: 20px;
  margin-top: .2rem;
  accent-color: var(--cyan);
}

.form-msg {
  min-height: 1.4rem;
  margin: 0;
  color: var(--amber);
  font-weight: 800;
}

.auth-form.is-valid .form-msg {
  color: var(--green);
}

.auth-note {
  margin: 1.25rem 0 0;
  color: var(--muted);
}

.auth-note a {
  color: var(--cyan);
  font-weight: 900;
}

.auth-art {
  min-height: 620px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.auth-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(1.1) contrast(1.08);
}

@media (max-width: 820px) {
  .auth-shell {
    grid-template-columns: 1fr;
    padding-top: 62px;
  }

  .auth-brand {
    left: 18px;
    top: 18px;
  }

  .auth-art {
    min-height: 260px;
    order: -1;
  }
}