/* Markdown 목차(TOC) 생성 전용 스타일 */

nav { max-width: 1100px; }
main { max-width: 1100px; }

.options-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.7rem;
  align-items: center;
  margin-bottom: 0.85rem;
  padding: 0.6rem 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.opt-group {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.opt-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-sub);
  white-space: nowrap;
}

.opt-group select {
  padding: 0.32rem 0.5rem;
  font-size: 0.78rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}

.opt-chk {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--text);
  cursor: pointer;
  user-select: none;
}
.opt-chk input {
  accent-color: var(--primary);
  cursor: pointer;
}

.btn-sample, .btn-clear {
  padding: 0.35rem 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-sample:hover {
  border-color: var(--primary);
  color: var(--primary);
}
.btn-clear:hover {
  border-color: var(--error);
  color: var(--error);
}
.btn-sample {
  margin-left: auto;
}

/* 변환 그리드 */
.convert-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.pane {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  min-height: 460px;
}

.pane-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.85rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  gap: 0.5rem;
}

.pane-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-sub);
}

.pane-count {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  color: var(--text-sub);
}

.pane-actions {
  display: flex;
  gap: 0.35rem;
}

.btn-mini {
  padding: 0.28rem 0.65rem;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--surface);
  color: var(--text-sub);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-mini:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.pane-area {
  flex: 1;
  width: 100%;
  padding: 0.85rem 1rem;
  border: none;
  outline: none;
  resize: vertical;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--text);
  background: var(--surface);
  min-height: 420px;
}

.pane-area:focus {
  background: var(--bg);
}

@media (max-width: 800px) {
  .convert-grid { grid-template-columns: 1fr; }
  .pane { min-height: 280px; }
  .pane-area { min-height: 240px; }
  .btn-sample { margin-left: 0; }
}

@media (max-width: 480px) {
  .options-bar { padding: 0.5rem 0.6rem; }
  .opt-group select { font-size: 0.74rem; }
  .pane-area { font-size: 0.8rem; }
}