/* 断面工坊 SectionCraft — 浅色工作台主题 */
:root {
  --bg: #f1f2ed;
  --panel: #ffffff;
  --ink: #1f2937;
  --ink-2: #6b7280;
  --line: #e2e6ea;
  --accent: #356756;
  --accent-soft: #edf3ed;
  --accent-ink: #294e40;
  --danger: #d64541;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 4px 14px rgba(16, 24, 40, .06);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: "Microsoft YaHei", "微软雅黑", "Segoe UI", system-ui, sans-serif;
  font-size: 13px;
  color: var(--ink);
  background: var(--bg);
  user-select: none;
}
button { font-family: inherit; color: inherit; }
svg { pointer-events: none; }

#app { display: flex; flex-direction: column; height: 100vh; }

/* 小程序开机页先于设计脚本出现，进度由真实的素材加载回调更新。 */
#road-boot { display:none; }
html.miniapp-boot #road-boot {
  position:fixed; inset:0; z-index:1000; display:flex; align-items:center; justify-content:center;
  padding:24px; background:linear-gradient(155deg,#eef6f0 0%,#f8faf6 48%,#e7f0ec 100%);
  transition:opacity .36s ease,visibility .36s ease;
}
html.miniapp-boot #road-boot.is-ready { opacity:0; visibility:hidden; pointer-events:none; }
.road-boot-card { width:min(100%,400px); text-align:center; color:#29483d; }
.road-boot-scene { height:126px; display:flex; justify-content:center; align-items:center; overflow:hidden; }
.road-boot-road {
  position:relative; width:270px; height:88px; overflow:hidden; border:7px solid #91aa9c;
  border-radius:16px; background:#44585d; transform:rotate(-12deg);
  box-shadow:0 18px 34px #28473c2a;
}
.road-boot-road::before,.road-boot-road::after {
  content:''; position:absolute; left:-45px; width:360px; height:3px;
  background:repeating-linear-gradient(90deg,#f5f8f3 0 26px,transparent 26px 45px);
  animation:road-boot-drive 1s linear infinite;
}
.road-boot-road::before { top:22px; }
.road-boot-road::after { bottom:22px; }
.road-boot-road span { position:absolute; left:0; right:0; top:calc(50% - 1px); height:2px; background:#e2cb83; }
.road-boot-brand { margin-top:7px; font-size:25px; font-weight:700; letter-spacing:.5px; }
.road-boot-brand span { display:block; margin-top:3px; color:#819990; font-size:12px; font-weight:500; letter-spacing:1.4px; }
.road-boot-title { margin:29px 0 8px; font-size:17px; font-weight:600; }
.road-boot-status { min-height:23px; color:#668076; font-size:13px; }
.road-boot-progress { width:100%; height:6px; margin:24px auto 8px; overflow:hidden; border-radius:9px; background:#dce9df; }
.road-boot-progress span { display:block; width:0; height:100%; border-radius:9px; background:#168568; transition:width .18s ease; }
.road-boot-count { color:#769086; font-size:12px; font-variant-numeric:tabular-nums; }
.road-boot-retry { margin-top:17px; padding:9px 18px; border:1px solid #a7c9b8; border-radius:7px; background:#fff; color:#28694f; cursor:pointer; }
.road-boot-retry[hidden] { display:none; }
@keyframes road-boot-drive { to { transform:translateX(45px); } }
@media(prefers-reduced-motion:reduce) {
  .road-boot-road::before,.road-boot-road::after { animation:none; }
  .road-boot-progress span,#road-boot { transition:none !important; }
}

/* ═══════════ 顶部应用栏 ═══════════ */
#app-bar {
  flex: none; height: 52px;
  display: flex; align-items: center; gap: 8px;
  padding: 0 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 8px; margin-right: 14px; }
.brand-logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.brand-logo svg { width: 20px; height: 20px; }
.brand-name { font-weight: 700; font-size: 15px; white-space: nowrap; }
.brand-name em { font-style: normal; font-weight: 400; font-size: 11px; color: var(--ink-2); margin-left: 2px; }
#save-state { color: #d97706; font-weight: bold; font-size: 12px; }
#app-version { font-size: 10px; color: var(--ink-2); white-space: nowrap; }

#viewport.empty-workspace { background: #fff; }
#viewport.empty-workspace #gl-canvas { display: none !important; }
#empty-workspace { position: absolute; inset: 0; display: grid; place-items: center; z-index: 2; pointer-events: none; }
#empty-workspace[hidden] { display: none; }
.empty-start { max-width: 540px; padding: 32px; text-align: center; color: #87969a; }
.empty-kicker { display: inline-block; margin-bottom: 13px; padding: 6px 12px; border-radius: 20px; background: #e8f3eb; color: #316450; font-size: 12px; font-weight: 600; }
.empty-start p { margin: 0 0 10px; font-size: 24px; font-weight: 650; color: #29483d; }
.empty-start small { display: block; margin-bottom: 25px; color: #70867c; font-size: 13px; line-height: 1.7; }
.empty-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; pointer-events: auto; }
.empty-actions button { padding: 11px 18px; border: 1px solid #dce7e3; border-radius: 7px; background: #f7faf9; color: #315851; font: inherit; font-size: 13px; cursor: pointer; }
.empty-actions button.primary { background: #157b62; border-color: #157b62; color: #fff; font-weight: 650; box-shadow: 0 4px 12px #157b6233; }
.empty-actions button.primary:hover { background: #0c6a54; border-color: #0c6a54; }
.empty-actions button:hover { border-color: #168d7e; background: #edf7f3; }

.bar-group { display: flex; align-items: center; gap: 2px; }
.bar-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  min-width: 52px; height: 44px; padding: 4px 8px;
  border: none; border-radius: 7px; background: transparent; cursor: pointer;
  color: var(--ink); font-size: 11px;
}
.bar-btn svg { width: 19px; height: 19px; stroke: currentColor; stroke-width: 1.7; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.bar-btn:hover { background: var(--accent-soft); color: var(--accent-ink); }
.bar-btn:active { transform: translateY(1px); }
.bar-btn.slim { min-width: 38px; }
.bar-sep { width: 1px; height: 26px; background: var(--line); margin: 0 6px; flex: none; }
.bar-flex { flex: 1; }

/* 顶栏下拉 */
.dropdown-host { position: relative; }
.dropdown {
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 90;
  min-width: 190px; padding: 6px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 1px;
}
.dropdown[hidden] { display: none; }
.dropdown .dd-title {
  font-size: 11px; color: var(--ink-2); padding: 6px 10px 3px; letter-spacing: 1px;
}
.dropdown button {
  display: flex; justify-content: space-between; align-items: center; gap: 14px;
  padding: 7px 10px; border: none; border-radius: 6px;
  background: transparent; cursor: pointer; text-align: left; font-size: 13px;
}
.dropdown button:hover { background: var(--accent-soft); color: var(--accent-ink); }
.dropdown kbd {
  font-family: inherit; font-size: 10px; color: var(--ink-2);
  background: var(--bg); border: 1px solid var(--line); border-radius: 4px; padding: 1px 5px;
}

/* ═══════════ 参数条 ═══════════ */
#param-bar {
  flex: none; height: 38px;
  display: flex; align-items: center; gap: 8px;
  padding: 0 16px;
  background: #f7f9fa;
  border-bottom: 1px solid var(--line);
}
#param-bar label { color: var(--ink-2); white-space: nowrap; }
#param-bar input {
  width: 88px; height: 26px; padding: 0 8px;
  border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); color: var(--ink); font-size: 13px;
}
#param-bar input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
#param-bar input.invalid { border-color: var(--danger); box-shadow: 0 0 0 2px #fdecec; }
.pb-static { min-width: 44px; font-weight: 600; }
.pb-unit { color: var(--ink-2); margin-left: -4px; }
.pb-btn {
  display: flex; align-items: center; gap: 4px;
  height: 26px; padding: 0 10px; margin-left: 8px;
  border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); cursor: pointer; font-size: 12px;
}
.pb-btn svg { width: 15px; height: 15px; stroke: currentColor; stroke-width: 1.7; fill: none; }
.pb-btn:hover { border-color: var(--accent); color: var(--accent-ink); background: var(--accent-soft); }

.tb-error {
  position: absolute; top: 94px; left: 50%; transform: translateX(-50%);
  background: #fdecec; color: var(--danger); border: 1px solid #f3b8b5;
  padding: 4px 16px; border-radius: 7px; z-index: 50; font-size: 12px;
  box-shadow: var(--shadow);
}

/* ═══════════ 中部 ═══════════ */
#mid { display: flex; flex: 1; min-height: 0; position: relative; }

/* 左侧元素库 */
#element-dock {
  width: 208px; flex: none;
  display: flex; flex-direction: column;
  background: var(--panel);
  border-right: 1px solid var(--line);
  z-index: 20;
}
.dock-head {
  flex: none; padding: 10px 14px 8px;
  font-weight: 700; font-size: 13px;
  border-bottom: 1px solid var(--line);
}
.dock-hint { display: block; font-weight: 400; font-size: 11px; color: var(--ink-2); margin-top: 2px; }
.dock-scroll { flex: 1; overflow-y: auto; padding: 8px 10px 16px; }
.dock-scroll::-webkit-scrollbar { width: 8px; }
.dock-scroll::-webkit-scrollbar-thumb { background: #d3d9de; border-radius: 4px; }
.dock-group { margin-top: 10px; }
.dock-label {
  font-size: 11px; color: var(--ink-2); letter-spacing: 2px;
  padding: 0 2px 6px;
}
.dock-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.el-btn {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 9px 4px 7px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fbfcfd; cursor: grab; font-size: 11.5px; color: var(--ink);
}
.el-btn svg { width: 22px; height: 22px; stroke: var(--accent-ink); stroke-width: 1.6; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.el-btn:hover { border-color: var(--accent); background: var(--accent-soft); box-shadow: var(--shadow); }
.el-btn:active { cursor: grabbing; transform: scale(.97); }
.ug-btn { min-height:37px; padding:7px 3px; color:#426879; background:#f7fbfc; cursor:pointer; }
#underground-panel { position:absolute;right:14px;top:14px;width:340px;max-height:calc(100% - 28px);overflow:auto;
  background:rgba(255,255,255,.97);border:1px solid #c9d9df;border-radius:12px;box-shadow:0 9px 28px rgba(30,55,65,.18);
  z-index:35;color:#31444d;font-size:12px;padding:12px;box-sizing:border-box; }
#underground-panel[hidden] { display:none; }
.ug-title { display:flex;justify-content:space-between;align-items:center;font-size:15px;font-weight:700;margin-bottom:9px; }
.ug-title button,.ug-actions button,.ug-list button { background:#fff;border:1px solid #d2dfe3;border-radius:6px;padding:4px 7px;cursor:pointer;color:#325d6e; }
.ug-list { display:grid;grid-template-columns:1fr 1fr;gap:5px;margin:10px 0; }
.ug-list button { display:flex;align-items:center;gap:8px;text-align:left;min-height:34px;overflow:hidden; }
.ug-list-code { font-size:10px;color:#7e929c;flex:none; }
.ug-list-name { overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#395563; }
.ug-list button.on { background:#e8f5f6;border-color:#65a6ae; }
.ug-row { display:flex;align-items:center;gap:7px;margin:7px 0; }
.ug-row label { width:88px;flex:none;color:#526872; }
.ug-row input,.ug-row select { flex:1;min-width:0;height:27px;border:1px solid #cddadf;border-radius:5px;background:white;padding:2px 5px;box-sizing:border-box; }
.ug-row input[type=checkbox] { flex:none;width:16px;height:16px; }
.ug-actions { display:flex;gap:5px;flex-wrap:wrap;margin:10px 0; }
.ug-warnings { background:#fff9ee;border:1px solid #eddcba;border-radius:7px;padding:7px;color:#795d29; }
.ug-warnings button { display:block;border:0;background:none;color:inherit;text-align:left;padding:3px;cursor:pointer;font-size:12px; }
.ug-note { color:#70818a;font-size:11px;line-height:1.5; }
.ug-section { font-size:11px;font-weight:600;color:#8497a0;padding-top:13px;margin:13px 0 8px;border-top:1px solid #e5ecef;letter-spacing:.5px; }
.ug-row input[type=color] { flex:none;width:38px;height:28px;padding:3px;cursor:pointer;border-radius:6px; }
.ug-color-value { flex:1;font-size:10px;letter-spacing:.3px;color:#889ba5; }
.ug-small-btn,.ug-reset-labels { color:#648491;background:#f6f9fa;border:1px solid #dce5e9;border-radius:5px;cursor:pointer;font-size:11px;padding:4px 8px; }
.ug-reset-labels { margin:7px 0; }
.ug-inline-edit { position:absolute;width:240px;height:32px;box-sizing:border-box;background:#fff;border:1px solid #6c9dac;border-radius:6px;padding:4px 9px;box-shadow:0 3px 12px #324f6520;color:#344d59;z-index:60;font:12px 'Microsoft YaHei'; }

/* 画布 */
#viewport { flex: 1; position: relative; min-width: 0; background: #dfe6ec; overflow: hidden; }
#gl-canvas, #svg-overlay, #dom-overlay {
  position: absolute; inset: 0; width: 100%; height: 100%;
}
#svg-overlay { pointer-events: none; }
#dom-overlay { pointer-events: none; }
#dom-overlay > * { pointer-events: auto; }
#viewport.dragging { cursor: grabbing; }
#viewport.inserting { cursor: copy; }

/* ═══════════ 对话框 ═══════════ */
#dialog-host { position: fixed; inset: 0; pointer-events: none; z-index: 100; }
.dialog {
  position: absolute; pointer-events: auto;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  box-shadow: 0 10px 40px rgba(16, 24, 40, .18);
  min-width: 320px; overflow: hidden;
}
.dialog-title {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 16px;
  background: #f7f9fa; border-bottom: 1px solid var(--line);
  cursor: move; font-weight: 700; font-size: 14px;
}
.dialog-close { cursor: pointer; padding: 0 4px; color: var(--ink-2); font-size: 15px; }
.dialog-close:hover { color: var(--danger); }
.dialog-body { padding: 16px 18px 6px; }
.dialog-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.dialog-row label { min-width: 64px; color: var(--ink-2); }
.dialog-row input[type=text], .dialog-row input[type=number], .dialog-row select {
  flex: 1; height: 28px; padding: 0 8px;
  border: 1px solid var(--line); border-radius: 6px; background: var(--panel);
  font-size: 13px;
}
.dialog-row input:focus, .dialog-row select:focus { outline: none; border-color: var(--accent); }
.dialog-row input[type=range] { flex: 1; accent-color: var(--accent); }
.dialog-row input[type=color] { width: 40px; height: 26px; border: 1px solid var(--line); border-radius: 5px; background: none; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 10px 18px 16px; }
.dialog-actions button {
  min-width: 72px; height: 30px; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--line); background: var(--panel); font-size: 13px;
}
.dialog-actions button:hover { border-color: var(--accent); color: var(--accent-ink); }
.dialog-actions button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.dialog-actions button.primary:hover { background: var(--accent-ink); color: #fff; }
.type-btns { display: flex; gap: 6px; }
.type-btns button {
  flex: 1; height: 30px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--panel); cursor: pointer;
}
.type-btns button:hover { border-color: var(--accent); }
.type-btns button.selected { background: var(--accent); color: #fff; border-color: var(--accent); }
.new-road-dialog .dialog-row { min-width:0; }
.new-road-dialog .dialog-row label { flex-shrink:0; }
.new-road-dialog .dialog-row input,.new-road-dialog .dialog-row select { min-width:0; }
.new-road-dialog .type-btns { flex-wrap:wrap; }
.new-road-dialog .type-btns button { min-height:34px;height:auto;padding:6px 12px;white-space:nowrap; }
.quick-road-dialog .dialog-row { gap:10px;align-items:flex-start;margin-bottom:10px; }
.quick-road-dialog .dialog-row>label { flex:0 0 142px;line-height:30px; }
.quick-road-value { display:flex;align-items:center;gap:6px;flex:1;min-width:0; }
.quick-road-value input,.quick-road-value select { min-width:0;max-width:100%; }
.quick-road-value input[type=number] { width:80px;flex:1; }
.quick-road-families { flex-wrap:wrap; }
.quick-road-families button { min-height:32px;white-space:nowrap;padding:5px 10px; }
.quick-road-preview svg { display:block;width:100%;background:#f7faf7;border:1px solid var(--line);border-radius:6px; }
.quick-road-dialog [hidden] { display:none!important; }
.quick-road-advanced { border-top:1px solid var(--line);padding-top:8px;margin:8px 0; }
.quick-road-advanced summary { cursor:pointer;color:var(--accent-ink);padding:4px 0 12px; }
.railway-dialog .dialog-row { gap:12px;min-width:0; }
.railway-dialog .dialog-row>label { flex:0 0 158px;line-height:1.5; }
.railway-dialog .dialog-row>input:not([type=checkbox]),.railway-dialog .dialog-row>select { min-width:0;flex:1; }
.railway-create-dialog .dialog-row>label { flex-basis:116px; }
.railway-dialog .rail-template-row { display:block; }
.rail-template-row>label { display:block;margin-bottom:9px; }
.rail-template-grid { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px; }
.rail-template-card { display:flex;flex-direction:column;align-items:stretch;min-width:0;padding:9px 10px 11px;border:1px solid #ccdcd6;border-radius:9px;background:#f8fbf9;text-align:left;cursor:pointer;color:#294e48; }
.rail-template-card svg { display:block;width:100%;height:100px; }
.rail-template-title { font-size:13px;line-height:1.5;padding-top:4px; }
.rail-template-card:hover,.rail-template-card:focus-visible { outline:2px solid #85b9a6;outline-offset:1px; }
.rail-template-card[aria-pressed=true] { border:2px solid #357a64;padding:8px 9px 10px;background:#edf7f1; }
.railway-tabs { align-items:center;flex-wrap:wrap; }
.railway-tabs button { padding:6px 12px;border:1px solid #cfddd8;border-radius:6px;background:#f8fbf9;color:#315d52;cursor:pointer; }
.railway-tabs button.primary { background:#3d7866;color:white; }
.rail-advanced-toggle { margin-left:auto;display:flex;gap:4px;align-items:center;font-size:12px;color:#638078; }
@media(max-width:620px){.rail-template-grid{grid-template-columns:1fr}.railway-dialog .dialog-row>label{flex-basis:116px}.railway-dialog .dialog-title{font-size:13px}.railway-dialog .dialog-body{padding:12px}.new-road-dialog .dialog-body{padding:14px}.new-road-dialog .type-btns button{padding:6px 8px}}

/* 风格对话框 */
.style-tabs { display: flex; gap: 4px; margin-bottom: 12px; }
.style-tabs button {
  padding: 6px 14px; border: 1px solid var(--line);
  border-radius: 7px; background: var(--panel); cursor: pointer;
}
.style-tabs button.selected { background: var(--accent); color: #fff; border-color: var(--accent); }
.thumb-list { display: flex; flex-direction: column; gap: 8px; max-height: 300px; overflow-y: auto; }
.thumb-item {
  border: 2px solid transparent; border-radius: 8px; cursor: pointer;
  padding: 3px; background: var(--bg);
}
.thumb-item.selected { border-color: var(--accent); }
.thumb-item canvas { display: block; width: 100%; border-radius: 5px; }
.thumb-item .thumb-label { text-align: center; padding: 3px 0 1px; color: var(--ink-2); }

/* 色板 */
.palette { display: grid; grid-template-columns: repeat(10, 22px); gap: 4px; }
.palette .swatch { width: 22px; height: 22px; border: 1px solid var(--line); cursor: pointer; border-radius: 5px; }
.palette .swatch:hover { outline: 2px solid var(--accent); }

/* ═══════════ 属性编辑浮层 ═══════════ */
.prop-box {
  position: absolute; display: flex; align-items: flex-start;
  pointer-events: auto; z-index: 40;
  font-size: 12px;
}
.prop-main {
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); padding: 10px 12px; min-width: 178px;
}
.prop-head {
  display: flex; align-items: center; justify-content: space-between;
  margin: -10px -12px 8px; padding: 8px 12px;
  background: #f7f9fa; border-bottom: 1px solid var(--line);
  border-radius: 10px 10px 0 0;
}
.prop-head .prop-name { font-weight: 700; }
.prop-row { display: flex; align-items: center; gap: 5px; margin-bottom: 6px; }
.prop-row label { min-width: 52px; color: var(--ink-2); }
.prop-row input[type=text] {
  width: 54px; height: 24px; text-align: center;
  border: 1px solid var(--line); border-radius: 6px;
}
.prop-row input[type=text]:focus { outline: none; border-color: var(--accent); }
.prop-row .pm-btn {
  width: 22px; height: 22px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); cursor: pointer; line-height: 1;
}
.prop-row .pm-btn:hover { border-color: var(--accent); color: var(--accent-ink); background: var(--accent-soft); }
.dir-arrow { font-size: 16px; cursor: pointer; padding: 0 4px; color: var(--accent-ink); }
.attach-icons { display: flex; gap: 5px; margin-top: 4px; }
.attach-icons .att-icon {
  width: 26px; height: 26px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); cursor: pointer; font-size: 13px;
}
.attach-icons .att-icon:hover { border-color: var(--accent); }
.attach-icons .att-icon.selected { background: var(--accent-soft); border-color: var(--accent); }

.prop-side {
  margin-left: 8px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow); min-width: 212px;
}
.prop-tabs { display: flex; gap: 3px; padding: 6px 8px 0; border-bottom: 1px solid var(--line); }
.prop-tabs button {
  padding: 4px 11px; border: 1px solid var(--line); border-bottom: none;
  border-radius: 6px 6px 0 0; background: #f2f4f6; cursor: pointer; font-size: 13px;
}
.prop-tabs button.selected { background: var(--panel); font-weight: 700; color: var(--accent-ink); }
.prop-tab-body { padding: 10px 12px; }
.styles-strip { display: flex; gap: 5px; overflow-x: auto; padding: 3px 0; max-width: 204px; }
.styles-strip .style-thumb {
  flex: none; width: 46px; height: 42px; border: 2px solid transparent; border-radius: 7px;
  background: var(--bg); cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.styles-strip .style-thumb.selected { border-color: var(--accent); }
.styles-strip .style-thumb canvas { max-width: 42px; max-height: 38px; }
.mini-row { display: flex; align-items: center; gap: 5px; margin-top: 6px; }
.mini-row label { min-width: 32px; color: var(--ink-2); }
.mini-row input[type=range] { flex: 1; accent-color: var(--accent); }
.mini-row select { height: 24px; border: 1px solid var(--line); border-radius: 5px; }
.tool-mini {
  width: 24px; height: 24px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel); cursor: pointer;
}
.tool-mini:hover { border-color: var(--accent); background: var(--accent-soft); }

/* ═══════════ SVG 标注/文字工具条 ═══════════ */
.dim-toolbar {
  position: absolute; display: flex; flex-direction: column; gap: 6px;
  pointer-events: auto; z-index: 35;
}
.dim-toolbar button {
  width: 40px; height: 40px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--panel); cursor: pointer; font-size: 20px;
  box-shadow: var(--shadow);
}
.dim-toolbar button:hover { border-color: var(--accent); background: var(--accent-soft); }
.dim-toolbar button[data-text-action] { font-size:11px; line-height:15px; padding:4px; white-space:normal; word-break:keep-all; }

.text-toolbar {
  position: absolute; display: flex; align-items: center; gap: 4px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 9px;
  box-shadow: var(--shadow); padding: 5px 7px;
  pointer-events: auto; z-index: 45; font-size: 12px;
}
.text-toolbar select { height: 24px; border: 1px solid var(--line); border-radius: 5px; }
.text-toolbar button {
  min-width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--panel); cursor: pointer; font-size: 16px;
}
.text-toolbar button:hover { border-color: var(--accent); }
.text-toolbar button.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.structure-list-row { display:flex;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--line); }
.structure-list-row span { flex:1;min-width:0;overflow-wrap:anywhere; }
.structure-list-row button { min-width:52px;min-height:34px; }
#edit-terrain[hidden] { display:none; }

/* 帮助面板 */
.help-panel { max-width: 470px; max-height: 70vh; overflow-y: auto; }
.help-panel h4 { margin: 10px 0 5px; color: var(--accent-ink); }
.help-panel table { border-collapse: collapse; width: 100%; font-size: 12px; }
.help-panel td { border: 1px solid var(--line); padding: 4px 9px; }

.plan-library-group{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:6px;padding:8px 0 12px;border-bottom:1px solid #dfe9e5}.plan-library-group h4{width:100%;margin:2px 0 4px;color:#41636a;font-size:13px}.plan-library-group button{flex:1 1 100px}

/* Local standards and backup entry. */
#tb-knowledge{border:1px solid #cdded8;border-radius:7px;background:#f0f6f3;color:#28635c;font-size:12px;padding:5px 9px;cursor:pointer;white-space:nowrap;}
#tb-knowledge:hover{background:#e1f0e9;border-color:#82b7a4;}

/* 地下设施配对净距：独立开关与颜色，点选时保持设施列表可见。 */
.ug-pair-list { display:flex;flex-direction:column;gap:5px;margin:8px 0; }
.ug-pair-row { display:flex;align-items:center;gap:7px; }
.ug-pair-row input { flex:none;width:16px;height:16px; }
.ug-pair-row button { flex:1;min-width:0;text-align:left;padding:6px 8px;background:#fff;border:1px solid #d2dfe3;border-radius:6px;cursor:pointer;color:#395563; }
.ug-pair-row button.on { background:#e8f5f6;border-color:#65a6ae; }
.ug-pick-status { margin:7px 0;padding:8px;background:#e8f5f6;border-radius:6px;color:#21666c;font-size:12px;line-height:1.5; }
.ug-distances .ug-row label { width:96px; }
.ug-actions button:disabled { opacity:.5;cursor:default; }

/* Stable bridge workspace navigation, shared by all detailed editors. */
.bridge-workspace-nav {display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:5px;padding:10px 16px;border-bottom:1px solid var(--line);flex-shrink:0;background:var(--panel)}
.bridge-workspace-nav button {font-size:12px;line-height:1.4;padding:8px 3px;white-space:normal;min-height:42px;border:1px solid var(--line);border-radius:6px;cursor:pointer;background:var(--panel)}
.bridge-workspace-nav button.primary {background:var(--accent);color:#fff}
.bridge-workspace-links {display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.bridge-workspace-links button {font-size:12px;padding:6px 9px;border:1px solid var(--line);border-radius:6px;background:var(--accent-soft);cursor:pointer}
.dim-toolbar button {width:66px;min-height:30px;height:auto;font-size:12px;line-height:1.4;padding:6px 3px;white-space:normal}
.dim-toolbar {gap:4px}

.dialog[data-bridge-workspace] [hidden] {display:none !important}

.bridge-workspace-location {display:flex;align-items:center;gap:10px;padding:5px 16px;height:34px;box-sizing:border-box;border-bottom:1px solid var(--line);font-size:12px;color:#718783;flex-shrink:0}
.bridge-workspace-location button {font-size:12px;padding:3px 12px;background:var(--panel);border:1px solid var(--line);border-radius:5px;cursor:pointer}
.bridge-workspace-location button:disabled {opacity:.4;cursor:default}
.tunnel-wizard-nav {display:flex;flex-wrap:wrap;gap:8px;padding:10px 16px;border-bottom:1px solid var(--line);flex-shrink:0}
.tunnel-wizard-nav button {padding:7px 10px;font-size:12px;border:1px solid var(--line);border-radius:6px;cursor:pointer;background:var(--panel)}
.tunnel-wizard-nav .primary {background:var(--accent);color:#fff}
.dim-toolbar {max-height:calc(100% - 12px);overflow-y:auto;padding:2px}

.quick-road-submodules{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:10px 12px;border:1px solid #d6e3dc;background:#f1f7f3;border-radius:6px;margin:10px 0}.quick-road-submodules>span{font-weight:700;color:#356451}.quick-road-submodules button{min-height:34px;white-space:normal}