.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 520px);
  background: var(--paper);
  color: var(--ink);
}

.auth-story {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 48px;
  background: var(--surface-1);
  border-right: 1px solid var(--rule);
  overflow: hidden;
}

.auth-story::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid var(--hairline-soft);
  border-radius: 18px;
  pointer-events: none;
}

.auth-brand {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-mark {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  font: 700 15px/1 var(--font-display);
}

.auth-brand strong {
  display: block;
  font: 700 18px/1.1 var(--font-display);
}

.auth-brand span,
.auth-copy p,
.auth-foot {
  color: var(--ink-3);
}

.auth-copy {
  position: relative;
  max-width: 470px;
}

.auth-copy h1 {
  margin: 0 0 14px;
  font: 700 48px/1.02 var(--font-display);
  letter-spacing: 0;
}

.auth-copy p {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-md);
  line-height: 1.55;
}

.auth-panel {
  display: grid;
  align-items: center;
  padding: 48px;
  background: var(--paper);
}

.auth-card {
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
}

.auth-card h2 {
  margin: 0 0 6px;
  font: 700 26px/1.1 var(--font-display);
}

.auth-card > p {
  margin: 0 0 24px;
  color: var(--ink-3);
  font-size: var(--fs-sm);
}

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

.auth-field {
  display: grid;
  gap: 6px;
}

.auth-field label {
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--ink-2);
  text-transform: uppercase;
}

.auth-error {
  margin: 0 0 14px;
  padding: 10px 12px;
  border: 1px solid var(--danger-line);
  border-radius: var(--radius-sm);
  color: var(--danger);
  background: var(--danger-bg);
  font-size: var(--fs-sm);
}

.auth-meta {
  margin-top: 20px;
  color: var(--ink-4);
  font-size: var(--fs-xs);
}

@media (max-width: 860px) {
  .auth-shell {
    grid-template-columns: 1fr;
  }
  .auth-story {
    min-height: 220px;
    padding: 28px;
  }
  .auth-copy h1 {
    font-size: 34px;
  }
  .auth-panel {
    padding: 28px;
  }
}