.tb-main {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.tb-intro {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(236, 72, 153, 0.06));
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 14px;
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
}
.tb-intro h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 0.75rem; }
.tb-intro p { color: var(--text); line-height: 1.9; font-size: 0.92rem; }
.tb-intro strong { color: var(--primary-light); }
.tb-intro code {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  color: #fbbf24;
  font-size: 0.88em;
}

.tb-layout {
  display: grid;
  grid-template-columns: 400px 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
}
.tb-form, .tb-output {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 1.75rem;
}
.tb-form h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 1.25rem; }
.tb-form .form-group { margin-bottom: 1rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}
/* 単元複数選択 */
.unit-picker {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.unit-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  min-height: 60px;
  max-height: 200px;
  overflow-y: auto;
}
.unit-chip {
  padding: 0.35rem 0.8rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--primary-light);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.unit-chip:hover {
  background: rgba(99, 102, 241, 0.2);
  transform: translateY(-1px);
}
.unit-chip.selected {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.unit-chip.selected::after {
  content: ' ✓';
  font-weight: 900;
}
.unit-hint {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  padding: 0.5rem;
}

.unit-selected-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.8rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.05));
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 8px;
  flex-wrap: wrap;
}
.usb-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 700;
}
#tbUnitSelectedTags {
  flex: 1;
  font-size: 0.82rem;
  color: var(--text);
  font-weight: 600;
  line-height: 1.5;
}
.usb-clear {
  padding: 0.25rem 0.7rem;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.25);
  color: var(--error);
  border-radius: 6px;
  font-size: 0.72rem;
  font-family: inherit;
  cursor: pointer;
  font-weight: 700;
}
.usb-clear:hover { background: rgba(239, 68, 68, 0.2); }

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}

/* Layout mode picker */
.layout-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.layout-opt { cursor: pointer; display: block; }
.layout-opt input { display: none; }
.layout-card {
  padding: 0.85rem 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border: 2px solid var(--panel-border);
  border-radius: 10px;
  transition: all 0.2s;
  text-align: center;
  height: 100%;
}
.layout-opt:hover .layout-card { border-color: rgba(99, 102, 241, 0.3); }
.layout-opt input:checked + .layout-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(236, 72, 153, 0.05));
  border-color: var(--primary);
}
.layout-emoji { font-size: 1.8rem; margin-bottom: 0.3rem; }
.layout-title { font-weight: 700; font-size: 0.85rem; margin-bottom: 0.3rem; }
.layout-desc { font-size: 0.72rem; color: var(--text-dim); line-height: 1.6; }
.layout-desc strong { color: var(--primary-light); font-weight: 700; }

.view-toolbar {
  margin-left: auto;
  display: flex;
  gap: 0.3rem;
}
.reveal-toolbar-btn {
  padding: 0.35rem 0.8rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--primary-light);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}
.reveal-toolbar-btn:hover { background: rgba(99, 102, 241, 0.2); }

.reveal-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(236, 72, 153, 0.08));
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--primary-light);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 1rem;
}
.reveal-btn:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.25), rgba(236, 72, 153, 0.12));
}
.reveal-btn .arrow { transition: transform 0.3s; display: inline-block; }
.reveal-btn.expanded .arrow { transform: rotate(180deg); }
.reveal-btn.expanded { background: rgba(99, 102, 241, 0.2); }
.reveal-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
  margin-top: 0;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  padding: 0 1rem;
}
.reveal-content.show {
  max-height: 3000px;
  padding: 1rem;
  margin-top: 0.5rem;
}
.reveal-section {
  margin: 0.75rem 0;
}
.reveal-section h4 {
  color: var(--accent) !important;
  font-size: 0.92rem !important;
  margin: 0.75rem 0 0.4rem !important;
}

.chapter-sep {
  margin: 3rem 0 2rem;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.05));
  border-radius: 12px;
  text-align: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-light);
  letter-spacing: 0.1em;
}

.answers-section-start {
  margin: 3rem 0 1.5rem;
  padding: 1.5rem 2rem;
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.12), rgba(99, 102, 241, 0.05));
  border: 2px solid rgba(236, 72, 153, 0.3);
  border-radius: 14px;
  text-align: center;
}
.answers-section-start h2 {
  border: none !important;
  background: none !important;
  color: var(--accent) !important;
  font-size: 1.6rem !important;
  margin: 0 !important;
  padding: 0 !important;
}
.answers-section-start p {
  margin-top: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.answer-block {
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
  border-left: 3px solid var(--accent);
  border-radius: 0 10px 10px 0;
}
.answer-block-title {
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  padding: 0.75rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
}
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--text);
  cursor: pointer;
  padding: 0.25rem;
}
.checkbox-item input { accent-color: var(--primary); }

.tb-cost { margin-top: 0.5rem; font-size: 0.78rem; color: var(--text-muted); }
.quality-badge {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.12), rgba(99, 102, 241, 0.06));
  border: 1px solid rgba(236, 72, 153, 0.3);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  font-size: 0.82rem;
  line-height: 1.7;
}
.quality-badge strong {
  display: block;
  color: var(--accent);
  margin-bottom: 0.2rem;
  font-size: 0.88rem;
}
.quality-badge span { color: var(--text-dim); }

/* Output */
.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.output-header h3 { font-size: 1.1rem; font-weight: 800; }
.output-actions {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}
.btn-secondary.btn-small {
  padding: 0.4rem 0.8rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--primary-light);
  border-radius: 6px;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-secondary.btn-small:hover { background: rgba(99, 102, 241, 0.2); }

.view-tabs {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--panel-border);
}
.view-tab {
  padding: 0.55rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.view-tab.active {
  color: var(--primary-light);
  border-bottom-color: var(--primary);
}

.tb-result {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 2rem;
  min-height: 600px;
  max-height: 800px;
  overflow-y: auto;
  line-height: 1.9;
}
.tb-placeholder {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}
.tb-placeholder p { line-height: 2; font-size: 0.95rem; }
.tb-placeholder code {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-size: 0.85em;
  color: #fbbf24;
}

/* Rendered view */
.tb-result.rendered { color: var(--text); }
.tb-result.rendered h1 {
  font-size: 1.8rem;
  font-weight: 900;
  margin: 0 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--primary);
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.tb-result.rendered h2 {
  font-size: 1.3rem;
  font-weight: 800;
  margin: 2rem 0 1rem;
  padding: 0.5rem 0 0.5rem 1rem;
  border-left: 4px solid var(--accent);
  background: rgba(99, 102, 241, 0.05);
  border-radius: 0 8px 8px 0;
}
.tb-result.rendered h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.5rem 0 0.75rem;
  color: var(--primary-light);
}
.tb-result.rendered h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1rem 0 0.5rem;
  color: var(--text);
}
.tb-result.rendered p { margin: 0.75rem 0; line-height: 1.9; }
.tb-result.rendered strong { color: var(--accent); font-weight: 700; }
.tb-result.rendered em { color: var(--primary-light); font-style: normal; font-weight: 500; }
.tb-result.rendered ul, .tb-result.rendered ol {
  margin: 0.75rem 0 0.75rem 1.75rem;
  line-height: 2;
}
.tb-result.rendered li { margin: 0.25rem 0; }
.tb-result.rendered blockquote {
  margin: 1rem 0;
  padding: 1rem 1.5rem;
  border-left: 4px solid var(--accent);
  background: rgba(236, 72, 153, 0.05);
  border-radius: 0 8px 8px 0;
  font-style: italic;
}
.tb-result.rendered table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
}
.tb-result.rendered th, .tb-result.rendered td {
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--panel-border);
  text-align: left;
}
.tb-result.rendered th {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-light);
  font-weight: 700;
}
.tb-result.rendered pre {
  background: rgba(0, 0, 0, 0.4);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  font-family: 'Inter', monospace;
  font-size: 0.85em;
  line-height: 1.7;
  white-space: pre-wrap;
}
.tb-result.rendered code {
  background: rgba(0, 0, 0, 0.3);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  color: #fbbf24;
  font-size: 0.88em;
}
.tb-result.rendered .tip-box {
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-left: 4px solid #0ea5e9;
  border-radius: 0 10px 10px 0;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.tb-result.rendered .tip-box::before {
  content: "💡 TIP ";
  font-weight: 800;
  color: #7dd3fc;
}
.tb-result.rendered .warn-box {
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid var(--warning);
  border-radius: 0 10px 10px 0;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}
.tb-result.rendered .warn-box::before {
  content: "⚠️ 注意 ";
  font-weight: 800;
  color: #fcd34d;
}

/* Raw views */
.tb-result.raw pre {
  margin: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
  font-family: 'Inter', monospace;
  font-size: 0.82rem;
  line-height: 1.8;
  white-space: pre-wrap;
  word-break: break-all;
}

/* reportlab section */
.reportlab-section {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 2rem;
}
.reportlab-section h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 1.5rem; }
.reportlab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.rl-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 1.25rem;
}
.rl-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--primary-light);
}
.rl-card h3 code {
  font-size: 0.88em;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  color: #fbbf24;
}
.rl-card p { color: var(--text-dim); font-size: 0.85rem; line-height: 1.8; margin-bottom: 0.75rem; }
.rl-card p code { background: rgba(0, 0, 0, 0.3); padding: 0.1rem 0.4rem; border-radius: 4px; color: #fbbf24; font-size: 0.85em; }
.rl-code {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid var(--panel-border);
  padding: 0.9rem 1rem;
  border-radius: 8px;
  font-family: 'Inter', monospace;
  font-size: 0.78rem;
  line-height: 1.7;
  color: #e5e7eb;
  white-space: pre-wrap;
  overflow-x: auto;
}

@media print {
  body > *:not(.tb-result) { display: none !important; }
  .tb-result {
    background: white !important;
    color: #111 !important;
    padding: 2cm !important;
    max-height: none !important;
  }
  .tb-result h1, .tb-result h2, .tb-result h3, .tb-result h4 { color: #111 !important; -webkit-text-fill-color: #111 !important; background: none !important; }
}

@media (max-width: 1024px) {
  .tb-layout { grid-template-columns: 1fr; }
  .reportlab-grid { grid-template-columns: 1fr; }
  .checkbox-grid { grid-template-columns: 1fr; }
}