.demo-page {
  min-height: calc(100vh - 68px);
}

/* --- Intro ------------------------------------------------------------------- */

.demo-intro {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
}

.demo-intro__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.demo-intro h1 {
  max-width: 22ch;
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  letter-spacing: -0.03em;
}

.demo-intro__lede {
  max-width: 56ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 1.05rem;
}

.synthetic-flag {
  flex: none;
  max-width: 30ch;
  margin: 0;
  padding: 12px 16px;
  border-left: 3px solid var(--amber);
  background: var(--amber-wash);
  color: var(--amber);
  font-size: 0.86rem;
  font-weight: 600;
}

/* --- Workspace ---------------------------------------------------------------- */

.demo-workspace {
  padding: 36px 0 24px;
}

.sample-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 22px;
}

.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) 56px minmax(0, 1fr);
  align-items: stretch;
}

.review-trace {
  width: 56px;
  margin-top: 180px;
  align-self: start;
  justify-self: center;
}

.review-document .facsimile__body {
  min-height: 380px;
  padding: 34px 38px;
}

.facsimile__foot {
  margin: 0;
  padding: 10px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: var(--bg);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 520;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* --- Review panel ---------------------------------------------------------------- */

.review-panel {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line-strong);
  background: var(--bg);
}

.review-panel__promise {
  margin: 0;
  padding: 12px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  background: var(--panel);
  font-size: 0.86rem;
  font-weight: 560;
}

.review-panel__body {
  flex: 1;
  padding: 22px;
}

.review-panel__state {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.review-corrected {
  color: var(--pine);
  font-size: 0.8rem;
  font-weight: 620;
}

.review-panel__action {
  margin: 0 0 20px;
  font-size: 1.35rem;
  font-weight: 660;
  letter-spacing: -0.02em;
}

.review-panel__facts {
  margin-top: 22px;
}

.review-panel .date-token > strong {
  font-size: 2.9rem;
}

.correction {
  display: grid;
  gap: 14px;
  margin-top: 22px;
  padding: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.correction__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.review-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px 22px;
  border-top: 1px solid var(--line);
}

/* --- Confirmed ---------------------------------------------------------------- */

.confirmed-panel {
  display: grid;
  justify-items: center;
  padding: 24px 0;
}

.confirmed-card {
  width: min(560px, 100%);
  padding: 28px 30px 30px;
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--pine);
  background: var(--bg);
  box-shadow: var(--shadow-paper);
}

.confirmed-card h2 {
  margin: 14px 0 10px;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}

.confirmed-card__summary {
  margin: 0 0 12px;
  color: var(--ink-2);
  font-size: 0.95rem;
}

.confirmed-card > p:not(.confirmed-card__summary) {
  margin: 0 0 22px;
  color: var(--ink-2);
  font-size: 0.98rem;
}

.confirmed-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* --- Next steps ---------------------------------------------------------------- */

.demo-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 56px;
  padding: 26px 0 4px;
  border-top: 2px solid var(--ink);
}

.demo-next h2 {
  margin: 0 0 8px;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.demo-next p {
  max-width: 58ch;
  margin: 0;
  color: var(--ink-2);
  font-size: 0.96rem;
}

.demo-next .button {
  flex: none;
}

/* --- Responsive ------------------------------------------------------------------ */

@media (max-width: 920px) {
  .demo-intro {
    padding: 40px 0 32px;
  }

  .demo-intro__inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }

  .review-layout {
    grid-template-columns: 1fr;
  }

  .review-trace {
    width: 2px;
    height: 40px;
    margin: -1px 0;
    justify-self: center;
  }

  .review-trace::before {
    top: -2px;
    left: -3.5px;
  }

  .review-trace::after {
    top: auto;
    right: auto;
    bottom: -2px;
    left: -3.5px;
  }

  .review-document .facsimile__body {
    min-height: 0;
    padding: 26px 24px;
  }

  .demo-next {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }
}

@media (max-width: 600px) {
  .sample-tabs {
    width: 100%;
  }

  .sample-tabs .chain-tab {
    flex: 1;
  }

  .review-actions {
    flex-direction: column;
  }

  .review-actions .button {
    width: 100%;
  }

  .confirmed-actions {
    flex-direction: column;
  }

  .confirmed-actions .button {
    width: 100%;
  }
}