/* ============================================================
   虚拟接线仿真系统 — 全局样式
   ============================================================ */
:root {
  --body-bg: #1a1a2e;
  --library-bg: #f8f9fa;
  --library-width: 220px;
  --toolbar-height: 44px;
  --drop-highlight: rgba(74,144,217,0.18);
  --text-primary: #222;
  --danger: #e74c3c;
  /* 主题色（App 启动时按主配置注入；默认 = 当前视觉） */
  --panel-bg: #eef0f2;
  --term-hover-fill: rgba(74,144,217,0.4);
  --term-hover-ring: rgba(74,144,217,0.4);
  --term-hover-probe: rgba(74,144,217,0.15);
  --term-hover-probed: rgba(74,144,217,0.45);
  --term-selected-fill: rgba(255,107,107,0.55);
  --term-selected-ring: rgba(255,107,107,0.4);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overscroll-behavior: none;   /* 手机端禁用下拉刷新 / 橡皮筋连带滚动 */
}

body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--body-bg);
  height: 100vh; height: 100dvh;   /* dvh：手机浏览器地址栏收起/展开时高度自适应 */
  width: 100%; max-width: 100vw;
  display: flex; flex-direction: column;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;   /* 长按不弹系统菜单（长按 = 右键，由 touch.js 接管） */
  overscroll-behavior: none;
}

/* ---- 工具栏 ---- */
.toolbar {
  height: var(--toolbar-height);
  background: #2d2d44;
  display: flex; align-items: center;
  padding: 0 12px; gap: 11px;   /* 标准间距（窄屏另有覆盖）：右侧"作者 | 开源地址 | 二次开发"署名要一屏可见 */
  flex-shrink: 0;
  border-bottom: 1px solid #3d3d54;
  /* 内容超出 → 横向滚动：body 是 overflow:hidden，否则右侧按钮/署名会被直接裁掉、点不到 */
  overflow-x: auto; overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.toolbar::-webkit-scrollbar { display: none; }
/* 标签永不竖排：flex 压缩会把"导线色"挤成一列字，必须 nowrap（放不下就让工具栏横向滚动） */
.toolbar label, .toolbar .picker-label, .toolbar .brand { white-space: nowrap; }
.toolbar .picker-label { color: #aaa; font-size: 11px; }
.toolbar .brand {
  color: #fff; font-size: 15px; font-weight: 600;
  letter-spacing: 1px; margin-right: 8px;
}
.toolbar .sep { width: 1px; height: 22px; background: #4a4a6a; }
/* 窗口不够宽时收起最左侧标题，优先保证右侧功能按钮与署名完整可见：
   标题只是装饰，署名被裁掉才是真问题（浏览器标签页仍有完整标题）。
   ⚠️ 阈值必须留足余量：本机实测整行含标题 1735px，但不同系统/浏览器字体度量不同，
   用户在 1740~1850px 的窗口里署名尾部仍被裁 → 按 1900px 收（约 165px 余量）。
   标题后的分隔竖线一起收起，否则行首会留一根孤零零的竖线 */
@media (max-width: 1899px) { .toolbar .brand, .toolbar .brand + .sep { display: none; } }
.toolbar label {
  color: #aaa; font-size: 12px;
  display: flex; align-items: center; gap: 6px;
}
.toolbar input[type="number"] {
  width: 50px; padding: 4px 6px;
  border: 1px solid #555; border-radius: 4px;
  background: #3d3d54; color: #ddd;
  font-size: 13px; text-align: center; font-family: inherit;
}
.toolbar input[type="number"]:focus { outline: none; border-color: #4a90d9; }
/* iOS 风格开关（线槽/敷设模式切换） */
.toolbar .switch-row {
  display: inline-flex; align-items: center; gap: 6px;
  cursor: pointer; user-select: none; padding: 2px 0;
}
.toolbar .switch-row .switch-label {
  color: #ddd; font-size: 12px; min-width: 52px; text-align: right;
}
.toolbar .switch-row .switch {
  width: 36px; height: 20px; border-radius: 10px;
  background: #666; position: relative; transition: background .2s;
  flex-shrink: 0;
}
.toolbar .switch-row .switch .knob {
  width: 16px; height: 16px; border-radius: 50%; background: #fff;
  position: absolute; top: 2px; left: 2px; transition: left .2s;
  box-shadow: 0 1px 2px rgba(0, 0, 0, .35);
}
.toolbar .switch-row.on .switch { background: #4a90d9; }
.toolbar .switch-row.on .knob { left: 18px; }
/* hover 展开工具组（清除 / 排故） */
.toolbar .tool-group { position: relative; display: inline-block; }
.toolbar .tool-group .group-menu {
  display: none; position: absolute; top: 100%; left: 0;
  background: #3d3d54; border: 1px solid #4a4a6a; border-radius: 8px;
  padding: 6px; box-shadow: 0 4px 12px rgba(0, 0, 0, .45);
  /* z-index 要压过竖屏提示条(10005)/万用表(10000)/告警栈(10001)：
     手机上菜单正好开在提示条下面，否则第一项被"知道了"按钮挡死点不到 */
  z-index: 10010;
  white-space: nowrap; gap: 6px; flex-direction: column; align-items: stretch;
}
.toolbar .tool-group.open .group-menu { display: flex; }   /* 点击展开（触屏无 hover；fixed 定位不被工具栏裁切） */
.toolbar .tool-group .group-menu .btn-sm { width: 100%; }
.toolbar .tool-group .group-menu .btn-sm.active { background: #4a90d9; color: #fff; }
.toolbar .btn-sm {
  padding: 5px 12px; border: 1px solid #555; border-radius: 4px;
  background: #3d3d54; color: #ccc; font-size: 12px;
  cursor: pointer; font-family: inherit;
  transition: all 0.12s; white-space: nowrap;
}
.toolbar .btn-sm:hover { background: #4d4d6a; }
.toolbar .btn-sm.active,
.toolbar .btn-sm.always-on { background: #4a90d9; border-color: #4a90d9; color: #fff; }
.toolbar .info-text { color: #888; font-size: 11px; margin-left: auto; }

/* 颜色选择器成组：flex 压缩会把色块挤成竖排（5 个导线色被挤成 2 列 3 行、"气管色"贴上来），
   必须 flex-shrink:0 + 内部横向排布，放不下就让工具栏横向滚动，绝不压缩色块 */
.toolbar .color-picker {
  display: inline-flex; align-items: center; gap: 5px;
  flex-shrink: 0; white-space: nowrap; margin-right: 3px;
}
.toolbar .color-picker .color-swatch { flex: 0 0 auto; }
/* 署名行同样不换行（换行会撑破 34px 工具栏） */
.toolbar .author-info { white-space: nowrap; flex-shrink: 0; }

/* 颜色选择器 */
.color-swatch {
  display: inline-block; width: 18px; height: 18px;
  border-radius: 3px; border: 2px solid transparent;
  cursor: pointer; vertical-align: middle;
  transition: border-color 0.12s;
}
.color-swatch:hover { border-color: #fff; }
.color-swatch.active { border-color: #fff; box-shadow: 0 0 6px rgba(255,255,255,0.5); }

/* ---- 主区域 ---- */
.main { flex: 1; display: flex; min-height: 0; }

/* 配电盘区域 */
.panel-wrapper {
  flex: 1; background: #bcc0c5;
  overflow: auto; position: relative; padding: 0;
}
.panel { position: relative; margin: 0 auto; background: var(--panel-bg, #eef0f2); }
.wire-duct { box-sizing: border-box; }
.wire-duct.horizontal { width: 100%; }
.wire-duct.vertical { position: absolute; height: auto; }
.panel.no-duct .wire-duct { display: none; }
.panel-row { position: relative; transition: background 0.2s; }
.panel-row.drag-over {
  background: var(--drop-highlight);
  outline: 2px dashed #4a90d9; outline-offset: -2px; z-index: 1;
}
#wireCanvas { position: absolute; top: 0; left: 0; pointer-events: none; z-index: 5; }

/* 元器件卡片 */
.component-card {
  position: absolute; display: inline-flex;
  flex-direction: column; align-items: center;
  cursor: grab; background: transparent;
  padding: 4px 6px 2px; border: 2px solid transparent;
  border-radius: 4px; transition: border-color 0.15s;
  top: 50%; transform: translateY(-50%);
}
.component-card:hover { border-color: rgba(74,144,217,0.4); }
.component-card.wired,
.component-card.wired:hover { cursor: grab; border-color: transparent; }
.component-card.wired .del-btn { display: none !important; }
.component-card.dragging-in-row {
  cursor: grabbing; border-color: #4a90d9; z-index: 10;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
/* v3 图像层：SVG 拉伸填满（viewBox 与器件 size 一致，坐标对齐端子）；pointer-events:none 不挡端子/热区点击 */
.component-card .comp-img-layer { pointer-events: none; }
.component-card .comp-img-layer svg { display: block; width: 100%; height: 100%; }
/* 占位元素：撑起卡片宽高（图像层 absolute 脱离文档流，需占位防卡片坍缩） */
.component-card .comp-img-holder { pointer-events: none; flex-shrink: 0; }
/* 参数显示标签（params display 属性 overlay）：布局内联，字体/颜色等样式可由 display.class 引用的 CSS 类控制 */
.component-card .comp-text-label { font-family: inherit; }
.component-card .comp-text-label.pneu-pressure {
  font-size: 22px;
  font-weight: bold;
  color: #1a3d5c;
  text-shadow: 1px 0 0 #fff, -1px 0 0 #fff, 0 1px 0 #fff, 0 -1px 0 #fff;   /* 白色描边（图片上更清晰） */
}
.component-card .comp-text-label.speed-label {
  font-size: 22px;
  font-weight: bold;
  color: #e74c3c;
  text-shadow: 1px 0 0 #fff, -1px 0 0 #fff, 0 1px 0 #fff, 0 -1px 0 #fff;   /* 白色描边 */
}
/* 堵转提示（params display.class 引用，显示在原转速读数位置）：纯红粗体白描边 */
.component-card .comp-text-label.stall-label {
  font-weight: bold;
  color: #e74c3c;
  text-shadow: 1px 0 0 #fff, -1px 0 0 #fff, 0 1px 0 #fff, 0 -1px 0 #fff;   /* 白色描边 */
}
/* 按钮钮帽配色（image 内 SVG 元素的 class，params.classBind 注入：参数值即 class 名） */
.cap-red    { fill: #e74c3c; }
.cap-yellow { fill: #f1c40f; }
.cap-blue   { fill: #3498db; }
.cap-green  { fill: #2ecc71; }
.cap-white  { fill: #ecf0f1; }
.cap-black  { fill: #34495e; }
/* 器件标牌（黄底黑字标签，params display.class 引用）：名称等 text 参数图上叠加 */
.component-card .comp-text-label.yellow-plate {
  background: #ffef00;
  color: #222;
  padding: 1px 3px;
  font-weight: 600;
}
/* 器件标牌（红底白字标签） */
.component-card .comp-text-label.red-plate {
  background: #e74c3c;
  color: #fff;
  padding: 1px 3px;
  font-weight: 600;
}
/* 空文本标签（如未填名称）不显示 */
.component-card .comp-text-label:empty { display: none; }
.component-card .comp-label {
  color: #555; margin-top: 2px; text-align: center;
  max-width: 120px; min-width: 30px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  border: 1px solid transparent; border-radius: 2px;
  padding: 1px 4px; cursor: text; background: transparent;
}
.component-card .comp-label:hover { border-color: #ccc; }
.component-card .comp-label:focus {
  outline: none; border-color: #4a90d9;
  background: rgba(255,255,255,0.9);
  white-space: normal; overflow: visible; z-index: 5;
}
.component-card .del-btn {
  position: absolute; top: -10px; right: -10px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--danger); color: #fff;
  border: none; font-size: 13px; line-height: 22px;
  text-align: center; cursor: pointer;
  display: none; z-index: 2;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.component-card:hover .del-btn { display: block; }
.component-card .del-btn:hover { background: #c0392b; }

/* 拖动悬浮面板（万用表/排故）期间：禁用盘上导线/热区/端子的悬停光标与高亮效果 */
body.panel-dragging .comp-zone { cursor: default !important; }
body.panel-dragging .term-dot { cursor: default !important; }
body.panel-dragging .term-dot:hover { background: transparent !important; }

/* 端子圆点 */
.term-dot {
  position: absolute; border-radius: 50%; cursor: pointer;
  z-index: 4; background: transparent;
  transition: background 0.15s, box-shadow 0.15s;
}
.term-dot:hover { background: var(--term-hover-fill, rgba(74,144,217,0.4)) !important; }
.term-dot.full { cursor: default; pointer-events: none; }
.fault-active .term-dot.full { pointer-events: auto; cursor: pointer; }
.term-dot.full:hover { background: transparent !important; }
/* 只可检测端子（isProbeOnly）：半透明空心标识，点击无效果（不可接线） */
.term-dot.probe-only {
  background: var(--term-hover-probe, rgba(74, 144, 217, 0.15)) !important;
}
.term-dot.selected {
  background: var(--term-selected-fill, rgba(255,107,107,0.55)) !important;
  box-shadow: 0 0 0 3px var(--term-selected-ring, rgba(255,107,107,0.4));
}
.term-dot.probed {
  background: var(--term-hover-probed, rgba(74,144,217,0.45)) !important;
  box-shadow: 0 0 0 3px var(--term-hover-ring, rgba(74,144,217,0.4));
}
/* 统一告警栈条目（引擎按 key 动态增删；背景色由告警类型内联指定） */
.alert-item {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 13px;
  color: #fff;
  white-space: nowrap;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.25);
}

/* 漏气端子标记：💨 漏气符号放大悬浮在气孔上，漏气时显示 + 呼吸闪烁（恢复自动消失） */
.term-dot.leak::after {
  content: '💨';
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  font-size: 36px; line-height: 1;
  pointer-events: none; z-index: 9;
  animation: leak-blink 0.9s ease-in-out infinite;
}
@keyframes leak-blink {
  0%, 100% { opacity: 1; transform: translate(-50%, -50%) scale(1); }
  50%      { opacity: 0.6; transform: translate(-50%, -50%) scale(1.3); }
}

/* 元件库 */
.library {
  width: var(--library-width); background: var(--library-bg);
  flex-shrink: 0; display: flex; flex-direction: column;
  border-left: 1px solid #ddd; overflow-y: auto;
}
.library .lib-header {
  padding: 14px 16px 10px; font-size: 13px; font-weight: 600;
  color: var(--text-primary); border-bottom: 1px solid #eee;
}
.library .lib-section { border-bottom: 1px solid #f0f0f0; }
.library .lib-section-title {
  font-size: 11px; color: #999; padding: 8px 16px 4px;
  text-transform: uppercase; letter-spacing: 1px;
}
/* 元件库：按分类横排（每类一行或多行，缩略图 + 名字，悬停缩略图显示完整 description） */
#libraryContent {
  padding: 10px 12px;
}
.library .lib-section { margin-bottom: 14px; }
.library .lib-section-title {
  font-size: 11px; color: #999; padding: 4px 0 8px;
  text-transform: uppercase; letter-spacing: 1px;
}
.lib-section .lib-cards {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.lib-card {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  flex: 1 1 0; min-width: 76px; padding: 10px 6px; cursor: grab; transition: background 0.12s;
  border-radius: 8px; position: relative;
}
.lib-card:hover { background: #eef4fb; }
.lib-card.dragging { opacity: 0.4; }
.lib-card.disabled { opacity: 0.35; cursor: not-allowed; pointer-events: none; }
.lib-card.disabled::after {
  content: "已放置"; position: absolute; right: 8px; top: 8px;
  font-size: 10px; color: #999; background: #eee;
  padding: 2px 8px; border-radius: 10px;
}
.lib-card .lib-thumb {
  position: relative;   /* absolute 定位参照（内部可能有 <div> 包裹，div 高度 auto 导致百分比高度失效） */
  width: 64px; height: 64px;
  border-radius: 6px; background: #fff;
  border: 1px solid #eee; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
/* contain 等比缩放：内容相对 thumb 定位居中，宽高哪个方向超出就按哪个方向压缩，图片完整显示在框内 */
.lib-card .lib-thumb svg,
.lib-card .lib-thumb img {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  margin: auto;
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  pointer-events: none;   /* 事件穿透：缩略图上按下也能拖拽（拖拽源 = card），悬停 title 由 thumb 承担 */
}
.lib-card .lib-name {
  font-size: 12px; color: var(--text-primary); font-weight: 500;
  text-align: center; line-height: 1.3;
  overflow: hidden; text-overflow: ellipsis; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}

/* ---- 元件库悬浮化（右上角按钮 + 悬浮面板 + tab） ---- */
.btn-library-fab {
  position: fixed; top: 60px; right: 16px; z-index: 10002;
  padding: 9px 16px; font-size: 14px; font-weight: 600;
  color: #fff; background: #4a90d9; border: 1px solid #357abd;
  border-radius: 22px; cursor: pointer;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25);
  transition: background 0.15s;
}
.btn-library-fab:hover { background: #5ba0e5; }
.btn-library-fab.active { background: #357abd; box-shadow: inset 0 2px 6px rgba(0,0,0,0.25); }
.library.library-floating {
  position: fixed; top: 108px; right: 16px; z-index: 10001;
  width: 380px; max-height: calc(100vh - 140px);
  background: #fff; border: 1px solid #ddd; border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  display: flex; flex-direction: column; overflow: hidden;
}
.library.library-floating .lib-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px; border-bottom: 1px solid #eee;
}
.library.library-floating .lib-close {
  background: none; border: none; color: #999;
  font-size: 20px; cursor: pointer; line-height: 1; padding: 0 4px;
}
.library.library-floating .lib-close:hover { color: #e74c3c; }
.lib-tabs { display: flex; gap: 4px; padding: 8px 12px 0; border-bottom: 1px solid #eee; }
.lib-tab {
  flex: 1; padding: 7px 0; font-size: 13px; text-align: center;
  background: none; border: none; border-bottom: 2px solid transparent;
  color: #888; cursor: pointer;
}
.lib-tab.active { color: #4a90d9; font-weight: 600; border-bottom-color: #4a90d9; }
#libraryContent, #libraryScenes { overflow-y: auto; padding: 10px 12px; }
/* 场景卡片 */
.lib-scene-card {
  display: flex; gap: 10px; align-items: center;
  padding: 10px; margin-bottom: 8px; border: 1px solid #eee;
  border-radius: 8px; cursor: grab; background: #fafcff;
  transition: background 0.12s, border-color 0.12s;
}
.lib-scene-card:hover { background: #eef4fb; border-color: #bcd8f5; }
.lib-scene-card.dragging { opacity: 0.4; }
.lib-scene-icon {
  width: 40px; height: 40px; border-radius: 8px; flex-shrink: 0;
  background: #e8f2fc; display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; color: #4a90d9;
}
.lib-scene-name { font-size: 13px; font-weight: 600; color: var(--text-primary); margin-bottom: 3px; }
.lib-scene-desc { font-size: 11px; color: #999; line-height: 1.4; }

/* Toast */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  padding: 10px 24px; border-radius: 8px;
  font-size: 13px; color: #fff; z-index: 10000;
  animation: toastIn 0.25s ease, toastOut 0.25s ease 1.8s forwards;
}
.toast.warn { background: #e67e22; }
.toast.info { background: #4a90d9; }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes toastOut {
  from { opacity: 1; }
  to   { opacity: 0; }
}

/* ---- 右上角作者信息（可点击跳转作者主页） & 左下角状态栏 ---- */
.toolbar .author-info {
  color: #888; font-size: 11px;
  margin-left: auto; white-space: nowrap;
  text-decoration: none; cursor: pointer;
}
.toolbar .author-info a { color: #888; text-decoration: none; }
.toolbar .author-info a:hover { color: #4a90d9; }
.status-bar {
  position: fixed; left: 12px; bottom: 22px; z-index: 9999;   /* 抬高：不压住页脚（教学演示说明 / 备案号） */
  background: rgba(0, 0, 0, 0.4); color: #ddd;
  font-size: 12px; padding: 2px 10px; border-radius: 4px;
  max-width: 60vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ---- 无线槽自由布局：无行，元件绝对定位 ---- */
.panel.free-layout .component-card { top: 0; transform: none; }

/* ---- 十字工作台 3D 悬浮视窗（初始位置由 JS 设置，供 makeDraggable 拖动） ---- */
.table3d-window {
  position: fixed; width: 620px; height: 560px; z-index: 10050;
  background: #1e242b; border: 1px solid #2c3540; border-radius: 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .5);
  display: flex; flex-direction: column; overflow: hidden;
  user-select: none;
}
.table3d-title {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px; cursor: move; flex: none;
  color: #e6edf3; font-size: 13px; font-weight: 600;
  background: #232b33; border-bottom: 1px solid #2c3540;
}
.table3d-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table3d-close {
  background: none; border: none; color: #8b98a5; font-size: 18px;
  cursor: pointer; line-height: 1; padding: 0 6px; border-radius: 6px;
}
.table3d-close:hover { color: #fff; background: #d64550; }
.table3d-canvas-wrap { flex: 1; position: relative; min-height: 0; }
.table3d-canvas { display: block; width: 100%; height: 100%; cursor: grab; }
.table3d-canvas:active { cursor: grabbing; }
.table3d-hud {
  display: flex; align-items: center; gap: 18px;
  padding: 7px 14px; flex: none;
  background: #232b33; border-top: 1px solid #2c3540;
  font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums;
}
.table3d-hud .hud-x { color: #58a6ff; }
.table3d-hud .hud-y { color: #3fb950; }
.table3d-hint { margin-left: auto; font-size: 11px; color: #8b98a5; font-weight: 400; }

/* ============================================================
   移动端 / 触屏适配
   ------------------------------------------------------------
   · 触屏命中区放大、删除按钮常显（无 hover）
   · 工具栏单行横向滚动、悬浮面板贴边、元件库改底部抽屉
   · touch-action：可拖动元素禁用浏览器默认手势
   ============================================================ */

/* ---- 手势归属：拖动类元素上的触摸不再触发滚动/缩放手势 ---- */
.component-card,
.comp-zone,
.meter-probe,
.table3d-canvas,
.table3d-title,
#meterPanel,
#faultPanel { touch-action: none; }
.term-dot,
.component-card .comp-label,
.toolbar .btn-sm,
.lib-card,
.lib-scene-card,
button { touch-action: manipulation; }   /* 去掉双击缩放等待，轻点更跟手 */

/* ---- 触屏设备的命中区放大 ---- */
body.is-touch .term-dot { transform: scale(1.35); }              /* 圆点居中放大：更好点中，端子坐标不变 */
body.is-touch .component-card .del-btn { display: block; }        /* 没有 hover → 删除按钮常显 */

@media (hover: none) {
  .component-card .del-btn { display: block; }
  .component-card:hover { border-color: transparent; }
  .component-card .del-btn { width: 26px; height: 26px; line-height: 26px; font-size: 15px; }
  .lib-card { min-width: 84px; padding: 12px 6px; }
  .lib-card .lib-thumb { width: 72px; height: 72px; }
  .lib-card:active { background: #eef4fb; }
}

/* ---- 元件库"拿起待放置"高亮 ---- */
.lib-card.armed {
  background: #dcebfb;
  box-shadow: inset 0 0 0 2px #4a90d9;
}
.lib-scene-card.armed { background: #dcebfb; border-color: #4a90d9; box-shadow: inset 0 0 0 2px rgba(74,144,217,.45); }

/* ---- 放置提示条（元件库点选后） ---- */
.touch-place-hint {
  position: fixed; left: 50%; bottom: 76px; z-index: 10003;
  transform: translateX(-50%) translateY(16px);
  display: none; align-items: center; gap: 10px;
  max-width: calc(100vw - 24px);
  padding: 10px 12px 10px 16px; border-radius: 22px;
  background: rgba(74,144,217,.97); color: #fff; font-size: 13px;
  box-shadow: 0 6px 20px rgba(0,0,0,.35);
  transition: transform .18s ease, opacity .18s ease;
  opacity: 0; pointer-events: none;
}
.touch-place-hint.show { display: flex; opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.touch-place-hint .tph-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.touch-place-hint button {
  flex: none; border: none; border-radius: 14px; padding: 6px 12px;
  background: rgba(255,255,255,.22); color: #fff; font-size: 12px; font-family: inherit;
}

/* ---- 竖屏提示条（触屏 + 竖屏 + 窄屏） ---- */
.rotate-hint {
  position: fixed; left: 8px; right: 8px; top: calc(var(--toolbar-height) + 6px);
  z-index: 10005; display: none; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: 10px;
  background: rgba(45,45,68,.97); border: 1px solid #4a4a6a;
  color: #eee; font-size: 12px; box-shadow: 0 6px 20px rgba(0,0,0,.35);
  pointer-events: none;   /* 只是提示：不挡住下面的配电盘，只有"知道了"按钮可点 */
}
.rotate-hint button {
  margin-left: auto; flex: none; padding: 6px 12px;
  background: #3d3d54; border: 1px solid #555; border-radius: 6px;
  color: #ddd; font-size: 12px; font-family: inherit;
  pointer-events: auto;
}
.rotate-hint.hidden { display: none !important; }
@media (orientation: portrait) and (max-width: 860px) {
  body.is-touch .rotate-hint { display: flex; }
}

/* ---- 窄屏布局（手机 / 小窗）：工具栏横向滚动、面板贴边、元件库底部抽屉 ---- */
@media (max-width: 860px) {
  :root { --toolbar-height: 42px; }

  .toolbar { padding: 0 8px; gap: 8px; }
  .toolbar > * { flex-shrink: 0; }                    /* 窄屏一律横向滚动：不压缩，防文字换行 */
  .toolbar .brand, .toolbar label { white-space: nowrap; }
  .toolbar .brand { font-size: 13px; margin-right: 2px; }
  .toolbar .btn-sm { padding: 7px 12px; font-size: 13px; }
  .toolbar input[type="number"] { width: 56px; font-size: 16px; }   /* ≥16px：iOS 聚焦不自动放大 */
  .toolbar .switch-row .switch { width: 42px; height: 24px; border-radius: 12px; }
  .toolbar .switch-row .switch .knob { width: 20px; height: 20px; }
  .toolbar .switch-row.on .knob { left: 20px; }
  .toolbar .switch-row .switch-label { min-width: 46px; font-size: 12px; }
  .color-swatch { width: 22px; height: 22px; }
  .toolbar .tool-group .group-menu { max-height: 60vh; overflow-y: auto; }

  /* 元件库：底部抽屉（拇指可达），元件缩略图加大 */
  .library.library-floating {
    left: 0; right: 0; width: auto; top: auto; bottom: 0;
    max-height: 62vh;
    border-radius: 14px 14px 0 0;
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .btn-library-fab {
    top: auto; bottom: 46px; right: 12px;
    padding: 11px 18px; font-size: 15px;
  }

  /* 悬浮面板：不超出视口，可滚动 */
  #meterPanel, #faultPanel {
    max-width: calc(100vw - 16px);
    max-height: 58vh; overflow-y: auto;
  }
  .param-panel { max-width: calc(100vw - 16px); max-height: 70vh; overflow-y: auto; }

  /* 3D 视窗随视口收缩 */
  .table3d-window {
    width: calc(100vw - 16px);
    height: min(560px, 76vh);
  }
  .table3d-hud { gap: 12px; font-size: 12px; padding: 6px 10px; }
  .table3d-hint { display: none; }

  .status-bar { max-width: 52vw; font-size: 11px; left: 8px; bottom: 22px; }   /* 抬高：不压住页脚单行 */
  .alert-item { font-size: 12px; padding: 7px 14px; }
  footer { font-size: 10px; }
  .touch-place-hint { bottom: 100px; }
  /* 万用表面板贴在底部时会与右下角按钮重叠 → 测量期间先隐藏它 */
  body.meter-open .btn-library-fab { display: none; }
}

/* 页脚只剩"教学演示说明 | 备案号"两项（合计约 297px），320px 屏也单行放得下，不需要再拆两行 */

@media (max-width: 560px) {
  .toolbar .author-info { display: none; }   /* 极窄屏：让位给功能按钮（署名在窄屏工具栏里点不到，收起） */
}

/* 横屏手机（高度很小）：面板进一步压缩，避免遮挡配电盘 */
@media (max-height: 520px) {
  .library.library-floating { max-height: 76vh; }
  #meterPanel, #faultPanel { max-height: 72vh; }
  .table3d-window { height: 86vh; }
  .rotate-hint { display: none !important; }
}

/* 横屏手机 / 矮视口：元件库改右侧抽屉（底部抽屉在矮屏里几乎占满，挡住配电盘） */
@media (max-height: 520px) and (min-width: 600px) {
  .library.library-floating {
    left: auto; right: 0; top: 0; bottom: 0;
    width: min(430px, 52vw); max-height: none;
    border-radius: 14px 0 0 14px;
  }
}