.demo-section {
  background:
    radial-gradient(circle at 80% 12%, rgba(73, 214, 200, 0.14), transparent 34%),
    var(--white);
}

.demo-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(420px, 1fr);
  gap: 56px;
  align-items: center;
}

.demo-intro > p:not(.eyebrow) {
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.6;
}

.demo-points {
  display: grid;
  gap: 10px;
  padding: 0;
  margin: 26px 0 0;
  list-style: none;
}

.demo-points li {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--ink-soft);
  font-weight: 700;
}

.demo-points li::before {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--teal);
  content: "";
  flex: 0 0 auto;
}

.demo-shell {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #eef5f7;
  box-shadow: var(--shadow);
}

.demo-header {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 16px 18px;
  color: var(--white);
  background: #102c3f;
}

.demo-avatar {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: var(--cyan);
  font-weight: 900;
}

.demo-header strong,
.demo-header span {
  display: block;
}

.demo-header span {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
}

.demo-log {
  min-height: 278px;
  max-height: 360px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  padding: 20px;
  scroll-behavior: smooth;
}

.demo-message {
  width: fit-content;
  max-width: 86%;
  margin: 0;
  padding: 11px 14px;
  border-radius: 14px 14px 14px 4px;
  color: var(--ink);
  background: var(--white);
  box-shadow: 0 5px 16px rgba(11, 36, 54, 0.08);
  line-height: 1.5;
}

.demo-message.is-user {
  align-self: flex-end;
  border-radius: 14px 14px 4px 14px;
  color: var(--white);
  background: var(--teal-dark);
}

.demo-controls {
  padding: 16px 18px 18px;
  border-top: 1px solid var(--line);
  background: var(--white);
}

.demo-controls-label {
  display: block;
  margin-bottom: 10px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 800;
}

.demo-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.demo-suggestion {
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid rgba(14, 136, 122, 0.35);
  border-radius: 999px;
  color: var(--teal-dark);
  background: rgba(24, 183, 164, 0.07);
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
}

.demo-suggestion:hover,
.demo-suggestion:focus-visible {
  border-color: var(--teal-dark);
  background: rgba(24, 183, 164, 0.15);
}

.demo-suggestion:focus-visible {
  outline: 3px solid rgba(73, 214, 200, 0.34);
  outline-offset: 2px;
}

.demo-suggestion:disabled {
  opacity: 0.58;
  cursor: default;
}

.demo-note {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.45;
}

.demo-next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

@media (max-width: 980px) {
  .demo-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .demo-layout,
  .demo-intro {
    width: 100%;
  }

  .demo-log {
    min-height: 300px;
    padding: 16px;
  }

  .demo-message {
    max-width: 92%;
  }

  .demo-suggestions {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  .demo-log {
    scroll-behavior: auto;
  }
}