/* Landing try demo */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.lp-try-section {
  padding: 56px 0 64px;
  background: linear-gradient(180deg, #fff 0%, #ecfdf5 45%, #fff 100%);
}

.lp-try-wrap {
  max-width: 1080px;
  margin: 0 auto;
}

/* App shell mock — sidebar + 체험 모드 */
.lp-app-mock {
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr);
  min-height: 520px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
  text-align: left;
}

.lp-app-mock-sidebar {
  display: flex;
  flex-direction: column;
  padding: 16px 14px;
  background: #fafbfc;
  border-right: 1px solid #e2e8f0;
}

.lp-app-mock-section-label {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
}

.lp-app-mock-class-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  align-items: flex-start;
}

.lp-app-mock-select {
  flex: 1;
  min-width: 0;
  min-height: 44px;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  color: #1e293b;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
}

.lp-app-mock-child-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 220px;
  overflow-y: auto;
  margin-bottom: 12px;
  -webkit-overflow-scrolling: touch;
}

.lp-app-mock-child-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  background: #fff;
}

.lp-app-mock-child-chip.is-active {
  background: #4f46e5;
  border-color: #4f46e5;
  color: #fff;
}

.lp-app-mock-child-chip.is-active .lp-app-mock-child-text small {
  color: rgba(255, 255, 255, 0.88);
}

.lp-app-mock-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: #e2e8f0;
  border: 2px solid #e2e8f0;
}

.lp-app-mock-child-chip.is-active .lp-app-mock-avatar {
  border-color: rgba(255, 255, 255, 0.5);
}

.lp-app-mock-child-text {
  min-width: 0;
}

.lp-app-mock-child-text strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
}

.lp-app-mock-child-text small {
  display: block;
  font-size: 12px;
  color: #64748b;
}

.lp-app-mock-child-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: auto;
}

.lp-app-mock-sidebar-foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid #e2e8f0;
  font-size: 12px;
  line-height: 1.6;
  color: #64748b;
}

.lp-app-mock-btn {
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  border-radius: 12px;
  border: none;
  cursor: default;
}

.lp-app-mock-btn-primary {
  min-height: 44px;
  padding: 0 14px;
  color: #fff;
  background: #4f46e5;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}

.lp-app-mock-btn-ghost {
  min-height: 44px;
  padding: 0 14px;
  color: #475569;
  background: #fff;
  border: 1px solid #e2e8f0;
}

.lp-app-mock-child-actions .lp-app-mock-btn {
  width: 100%;
}

.lp-app-mock-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 16px 18px 20px;
  background: #fff;
}

.lp-app-mock-head {
  flex-shrink: 0;
}

.lp-app-mock-title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.35;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.lp-app-mock-sub {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.45;
  color: #64748b;
}

.lp-app-mock-chat {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 360px;
  margin-top: 12px;
  padding: 14px;
  background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
  border: 2px solid #c7d2fe;
  border-radius: 18px;
  box-shadow: 0 8px 28px rgba(79, 70, 229, 0.14);
}

.lp-app-mock-guide {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 4px 2px 14px;
}

.lp-app-mock-guide.is-hidden {
  display: none;
}

.lp-app-mock-guide-title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.02em;
}

.lp-app-mock-guide-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lp-app-mock-guide-item {
  width: 100%;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 12px;
  align-items: center;
  padding: 12px 14px;
  text-align: left;
  font: inherit;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.lp-app-mock-guide-item:hover:not(:disabled) {
  border-color: #a5b4fc;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.1);
}

.lp-app-mock-guide-item:disabled {
  opacity: 0.6;
  cursor: wait;
}

.lp-app-mock-guide-say {
  font-size: 14px;
  line-height: 1.45;
  color: #334155;
  font-weight: 600;
}

.lp-app-mock-guide-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 800;
  color: #94a3b8;
}

.lp-app-mock-guide-tag {
  font-size: 11px;
  font-weight: 800;
  color: #b45309;
  background: #fef3c7;
  padding: 5px 10px;
  border-radius: 999px;
  white-space: nowrap;
}

.lp-app-mock-compose {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-shrink: 0;
  margin-top: auto;
  padding: 12px;
  background: #fff;
  border: 1px solid #c7d2fe;
  border-radius: 14px;
  box-shadow: 0 2px 12px rgba(79, 70, 229, 0.08);
}

.lp-app-mock-compose textarea {
  flex: 1;
  min-height: 88px;
  max-height: 200px;
  resize: vertical;
  font-size: 16px;
  line-height: 1.5;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  background: #fff;
  font-family: inherit;
  color: #1e293b;
}

.lp-app-mock-compose textarea:focus {
  outline: none;
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.lp-app-mock-compose textarea::placeholder {
  color: #94a3b8;
}

.lp-app-mock-send {
  flex-shrink: 0;
  min-height: 48px;
  min-width: 72px;
  padding: 0 18px;
  cursor: pointer;
}

.lp-app-mock-send:disabled {
  opacity: 0.7;
  cursor: wait;
}

.lp-try-error {
  margin: 12px 0 0;
  font-size: 14px;
  color: #dc2626;
  text-align: center;
}

.lp-try-error.hidden {
  display: none !important;
}

/* Demo result cards — shown only after button click */
.landing-page .lp-demo-results[hidden] {
  display: none !important;
}

.landing-page .lp-demo-results {
  width: 100%;
  max-width: none;
  margin: 24px 0 0;
  display: grid;
  gap: 20px;
  text-align: left;
}

.landing-page .lp-demo-results-note {
  margin: 0;
  text-align: center;
  font-size: 14px;
  color: #0f766e;
  font-weight: 600;
}

.landing-page .lp-demo-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.landing-page .lp-demo-card {
  background: #ffffff;
  border: 1px solid #dbe5ee;
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  line-height: 1.7;
}

.landing-page .lp-demo-card--full {
  grid-column: 1 / -1;
}

.landing-page .lp-demo-card-title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 800;
  color: #0f766e;
}

.landing-page .lp-demo-card-body {
  margin: 0;
  color: #1f2937;
  font-size: 16px;
  white-space: pre-line;
  overflow-wrap: break-word;
  word-break: keep-all;
}

@media (max-width: 900px) {
  .lp-app-mock {
    grid-template-columns: 1fr;
  }

  .lp-app-mock-sidebar {
    border-right: none;
    border-bottom: 1px solid #e2e8f0;
  }

  .lp-app-mock-child-list {
    max-height: 160px;
  }
}

@media (max-width: 720px) {
  .lp-app-mock-guide-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .lp-app-mock-guide-meta {
    justify-self: start;
  }

  .landing-page .lp-demo-cards-grid {
    grid-template-columns: 1fr;
  }

  .landing-page .lp-demo-card--full {
    grid-column: auto;
  }
}