.demo-page {
  background: var(--bg);
}

.demo-hero,
.trial-shell,
.demo-notice {
  max-width: 1120px;
  margin: 0 auto;
}

.demo-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.68fr) minmax(280px, 0.32fr);
  gap: 24px;
  align-items: end;
  padding: clamp(56px, 8vw, 92px) 18px 30px;
}

.demo-hero h1 {
  max-width: 780px;
}

.demo-hero p:not(.eyebrow) {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.08rem;
  font-weight: 650;
}

.demo-hero aside {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 22px;
  box-shadow: var(--shadow);
}

.demo-hero aside span {
  display: block;
  color: var(--red);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.demo-hero aside strong {
  display: block;
  margin: 6px 0 8px;
  font-size: 1.35rem;
  line-height: 1.25;
}

.demo-hero aside p {
  margin: 0;
  color: var(--muted);
}

.trial-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.48fr) minmax(0, 0.52fr);
  gap: 18px;
  padding: 18px;
}

.trial-controls,
.trial-output,
.demo-notice {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.trial-controls,
.trial-output {
  min-height: 640px;
  padding: clamp(18px, 3vw, 28px);
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 18px;
}

.mode-tab,
.ghost-button {
  min-height: 42px;
  border: 1px solid var(--line-strong);
  background: var(--paper-2);
  color: var(--ink);
  font-weight: 900;
  cursor: pointer;
}

.mode-tab.active {
  border-color: var(--teal);
  background: var(--teal);
  color: #fffefa;
}

.trial-controls form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.trial-controls label {
  display: flex;
  flex-direction: column;
  gap: 7px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.trial-controls .wide {
  grid-column: 1 / -1;
}

.trial-controls input,
.trial-controls select,
.trial-controls textarea,
.trial-actions button {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  background: #fffefa;
  color: var(--ink);
  font: inherit;
}

.trial-controls select,
.trial-controls textarea {
  padding: 10px 11px;
}

.trial-controls textarea {
  resize: vertical;
}

.trial-actions {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
  gap: 10px;
}

.trial-actions button[type="submit"] {
  min-height: 48px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: #fffefa;
  font-weight: 900;
  cursor: pointer;
}

.output-heading {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.trial-output pre {
  min-height: 475px;
  max-height: 620px;
  overflow: auto;
  white-space: pre-wrap;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  background: #1f1d19;
  color: #fff7ea;
  font-size: 0.94rem;
  line-height: 1.75;
}

.output-tools {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

.output-tools .ghost-button {
  width: 150px;
}

#copy-status {
  color: var(--muted);
  font-weight: 800;
}

.demo-notice {
  margin-top: 18px;
  margin-bottom: 54px;
  padding: clamp(22px, 4vw, 34px);
}

.demo-notice h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  margin-bottom: 14px;
}

.demo-notice ul {
  margin: 0 0 22px;
  padding-left: 1.2em;
  color: var(--muted);
}

@media (max-width: 880px) {
  .demo-hero,
  .trial-shell,
  .trial-controls form {
    grid-template-columns: 1fr;
  }

  .trial-controls,
  .trial-output {
    min-height: 0;
  }
}

@media (max-width: 560px) {
  .mode-tabs,
  .trial-actions {
    grid-template-columns: 1fr;
  }
}