#tool-body {
  --mt-card: #ffffff;
  --mt-soft: #f7f8fb;
  --mt-text: #23262f;
  --mt-sub: #8a8f9c;
  --mt-border: #e9ebf1;
  --mt-primary: #4a6cf7;
  --mt-primary-soft: rgba(74, 108, 247, .08);
  --mt-right: #f65e5e;
  --mt-warn: #d03050;
  --mt-area: #fafbff;
  --mt-area-line: #eef1f8;
}
.theme-dark-mode #tool-body {
  --mt-card: #2b2d31;
  --mt-soft: #232529;
  --mt-text: #e8e9ec;
  --mt-sub: #9aa0ab;
  --mt-border: #3a3d44;
  --mt-primary-soft: rgba(110, 140, 255, .12);
  --mt-area: #202226;
  --mt-area-line: #2e3138;
}
#tool-body .mt-wrap {
  max-width: 1080px;
  margin: 0 auto;
  color: var(--mt-text);
}
#tool-body .mt-card {
  background: var(--mt-card);
  border: 1px solid var(--mt-border);
  border-radius: 14px;
  padding: 16px 18px;
  margin-bottom: 14px;
}
#tool-body .mt-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}
#tool-body .mt-title {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 700;
}
#tool-body .mt-title::before {
  content: '';
  width: 4px;
  height: 15px;
  border-radius: 2px;
  background: var(--mt-primary);
}
#tool-body .mt-note {
  font-size: 12px;
  color: var(--mt-sub);
  line-height: 1.7;
  margin-top: 12px;
}

/* Tab 切換：三個面板與畫板同屏 */
#tool-body .mt-tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--mt-border);
  margin-top: 14px;
}
#tool-body .mt-tab {
  background: none;
  border: 0;
  padding: 11px 18px;
  font-size: 14px;
  color: var(--mt-sub);
  cursor: pointer;
  position: relative;
}
#tool-body .mt-tab:hover { color: var(--mt-text); }
#tool-body .mt-tab.mt-on { color: var(--mt-primary); font-weight: 700; }
#tool-body .mt-tab.mt-on::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: -1px;
  height: 3px;
  border-radius: 2px;
  background: var(--mt-primary);
}
#tool-body .mt-panes { padding-top: 16px; }
#tool-body .mt-pane { display: none; }
#tool-body .mt-pane.mt-on { display: block; }

/* 通用按鈕 */
#tool-body .mt-btn-ghost {
  border: 1px solid var(--mt-border);
  background: transparent;
  color: var(--mt-sub);
  border-radius: 8px;
  padding: 6px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
#tool-body .mt-btn-ghost:hover { color: var(--mt-primary); border-color: var(--mt-primary); }
#tool-body .mt-btn-primary {
  border: 0;
  background: var(--mt-primary);
  color: #fff;
  border-radius: 8px;
  padding: 8px 22px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
#tool-body .mt-btn-primary:hover { opacity: .9; }

/* 測試區 */
#tool-body #mt-area {
  position: relative;
  height: 420px;
  height: clamp(240px, 30vh, 420px);
  border: 1px solid var(--mt-border);
  border-radius: 12px;
  background:
    radial-gradient(circle, var(--mt-area-line) 1px, transparent 1px) 0 0 / 24px 24px,
    var(--mt-area);
  overflow: hidden;
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
}
#tool-body #mt-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
#tool-body .mt-area-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  pointer-events: none;
  color: var(--mt-sub);
  font-size: 14px;
  transition: opacity .3s;
  text-align: center;
  padding: 0 16px;
}
#tool-body #mt-area.mt-acted .mt-area-hint { opacity: 0; }
#tool-body .mt-area-hint i { font-size: 30px; opacity: .5; }
#tool-body #mt-hold-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  display: none;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: var(--mt-primary);
  pointer-events: none;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .15);
}
#tool-body #mt-hold-badge.mt-right-hold { background: var(--mt-right); }
#tool-body #mt-hold-badge.mt-show { display: block; }
/* 非按住類事件（滾動 / 中鍵 / 側鍵）複用徽章做短暫回顯，中性深色底 */
#tool-body #mt-hold-badge.mt-neutral {
  background: rgba(20, 22, 26, .78);
  border: 1px solid rgba(255, 255, 255, .2);
}

/* 按鍵檢測 */
#tool-body .mt-keys {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
#tool-body .mt-key {
  border: 1px solid var(--mt-border);
  border-radius: 12px;
  padding: 12px 14px 10px;
  background: var(--mt-soft);
  transition: transform .06s, border-color .15s, background .15s, box-shadow .15s;
}
#tool-body .mt-key-top {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--mt-sub);
}
#tool-body .mt-key-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mt-border);
  transition: background .1s;
  flex: none;
}
#tool-body .mt-key-count {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.35;
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}
#tool-body .mt-key-extra {
  font-size: 12px;
  color: var(--mt-sub);
  font-variant-numeric: tabular-nums;
}
#tool-body .mt-key-extra b { color: var(--mt-warn); font-weight: 700; }
#tool-body .mt-key-extra.mt-ok { color: #18a058; }
#tool-body .mt-key-extra.mt-bad { color: var(--mt-warn); font-weight: 700; }
#tool-body .mt-fast {
  font-size: 11px;
  color: var(--mt-sub);
  font-weight: 600;
}
#tool-body .mt-log-btn {
  margin-left: auto;
  cursor: pointer;
  color: var(--mt-sub);
  opacity: .55;
  transition: color .15s, opacity .15s;
}
#tool-body .mt-log-btn:hover { color: var(--mt-primary); opacity: 1; }
#tool-body .mt-key.mt-down {
  border-color: var(--mt-primary);
  background: var(--mt-primary-soft);
  box-shadow: 0 3px 12px rgba(74, 108, 247, .18);
  transform: scale(.97);
}
#tool-body .mt-key.mt-down .mt-key-dot { background: var(--mt-primary); }

/* 雙擊閾值 */
#tool-body .mt-th {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--mt-sub);
}
#tool-body .mt-th-slider { width: 160px; }
#tool-body .mt-th b {
  color: var(--mt-primary);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

/* 實時數據格 */
#tool-body .mt-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
#tool-body .mt-cell {
  border: 1px solid var(--mt-border);
  border-radius: 12px;
  padding: 10px 14px;
  background: var(--mt-soft);
}
#tool-body .mt-cell-label {
  font-size: 12px;
  color: var(--mt-sub);
  display: flex;
  align-items: center;
  gap: 6px;
}
#tool-body .mt-cell-label i { width: 14px; text-align: center; }
#tool-body .mt-cell-val {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}
#tool-body .mt-cell-val small {
  font-size: 12px;
  font-weight: 600;
  color: var(--mt-sub);
  margin-left: 3px;
}
#tool-body .mt-cell-val.mt-accent { color: var(--mt-primary); }
#tool-body .mt-cell-val.mt-warnval { color: var(--mt-warn); }

/* CPS */
#tool-body .mt-chips {
  display: inline-flex;
  border: 1px solid var(--mt-border);
  border-radius: 8px;
  overflow: hidden;
}
#tool-body .mt-chip {
  padding: 6px 16px;
  font-size: 13px;
  cursor: pointer;
  background: transparent;
  border: 0;
  border-left: 1px solid var(--mt-border);
  color: var(--mt-sub);
}
#tool-body .mt-chip:first-child { border-left: 0; }
#tool-body .mt-chip.mt-on {
  background: var(--mt-primary);
  color: #fff;
  font-weight: 700;
}
#tool-body .mt-cps-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
#tool-body .mt-cps-left { display: flex; align-items: flex-end; gap: 28px; }
#tool-body .mt-cps-ctrl {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
#tool-body .mt-cps-ctrl #mt-cps-state { align-self: stretch; }
#tool-body .mt-cps-big {
  font-size: 40px;
  font-weight: 800;
  color: var(--mt-primary);
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
#tool-body .mt-cps-big small {
  font-size: 14px;
  font-weight: 600;
  color: var(--mt-sub);
  margin-left: 4px;
}
#tool-body .mt-cps-bestlabel {
  font-size: 12px;
  color: var(--mt-sub);
  margin-bottom: 2px;
}
#tool-body .mt-cps-best {
  font-size: 20px;
  font-weight: 800;
  color: var(--mt-text);
  font-variant-numeric: tabular-nums;
}
#tool-body #mt-cps-state {
  font-size: 13px;
  color: var(--mt-sub);
  line-height: 1.6;
  margin-top: 8px;
}
#tool-body #mt-cps-state.mt-run {
  color: var(--mt-primary);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

#tool-body .mt-foot {
  font-size: 12px;
  color: var(--mt-sub);
  text-align: center;
  padding: 2px 8px 6px;
}

@media (max-width: 900px) {
  #tool-body .mt-keys { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  #tool-body .mt-grid { grid-template-columns: repeat(2, 1fr); }
  #tool-body .mt-keys { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  #tool-body #mt-area { height: 260px; }
  #tool-body .mt-cps-flex { flex-direction: column; align-items: stretch; }
  #tool-body .mt-cps-left { justify-content: space-between; }
  #tool-body .mt-cps-ctrl { align-items: flex-start; }
  #tool-body .mt-tab { padding: 10px 12px; font-size: 13px; }
}