/* LISN Plan v0.2 — 对标 MTPro Layout Designer 的专业工具布局
   行1 菜单栏 / 行2 工具栏 / 左产品目录树 / 中 3D 场景 / 右三页签(属性/结构/订单) / 底状态栏 */
:root {
  --bg: #10151e;
  --panel: #1a2230;
  --panel2: #202a3c;
  --panel3: #26324a;
  --line: #2a3446;
  --txt: #d7deea;
  --dim: #8a94a8;
  --acc: #f5a623;
  --acc-dim: rgba(245,166,35,.14);
  --blue: #4a90d9;
  --ok: #4ade80;
  --warn: #f87171;
  --radius: 8px;
  --menu-h: clamp(34px, 3.8vh, 42px);
  --tool-h: clamp(38px, 4.4vh, 48px);
  --status-h: clamp(24px, 2.8vh, 30px);
  --left-w: clamp(230px, 20vw, 290px);
  --right-w: clamp(250px, 22vw, 330px);
  font-size: clamp(12.5px, 1vw + 0.42rem, 14.5px);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg); color: var(--txt); overflow: hidden;
}
#app { display: flex; flex-direction: column; height: 100dvh; }

/* ══ 行1: 菜单栏 ══ */
.menubar {
  height: var(--menu-h); flex: none;
  display: flex; align-items: center; gap: clamp(8px, 1.2vw, 18px);
  padding: 0 clamp(8px, 1.2vw, 16px);
  background: var(--panel); border-bottom: 1px solid var(--line);
  position: relative; z-index: 60;
}
.brand { display: flex; align-items: center; gap: clamp(5px, .6vw, 9px); }
.brand-mark {
  width: clamp(20px, 2vw, 26px); height: clamp(20px, 2vw, 26px);
  border-radius: 6px; background: var(--acc); color: #141a24;
  font-weight: 800; font-size: clamp(12px, 1.2vw, 16px);
  display: grid; place-items: center;
}
.brand-name { font-size: clamp(13px, 1.2vw, 16px); font-weight: 700; }
.brand-name em { font-style: normal; color: var(--acc); }
.menus { display: flex; height: 100%; }
.menu {
  position: relative; display: flex; align-items: center;
  padding: 0 clamp(8px, .9vw, 14px); cursor: pointer; font-size: clamp(12px, .95vw, 14px);
  color: var(--txt); height: 100%; user-select: none;
}
.menu:hover { background: var(--panel3); }
.dropdown {
  display: none; position: absolute; top: 100%; left: 0; min-width: clamp(160px, 15vw, 220px);
  background: var(--panel2); border: 1px solid var(--line); border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 10px 28px rgba(0,0,0,.45); padding: 4px; z-index: 100;
}
.menu:hover .dropdown, .menu.open .dropdown { display: block; }
.dropdown a {
  display: block; padding: clamp(5px, .7vh, 8px) clamp(10px, 1vw, 14px);
  color: var(--txt); text-decoration: none; font-size: clamp(12px, .95vw, 13.5px);
  border-radius: 5px;
}
.dropdown a:hover { background: var(--acc-dim); color: var(--acc); }
.menubar-right { margin-left: auto; display: flex; align-items: center; gap: clamp(6px, .8vw, 12px); }
.proj { color: var(--dim); font-size: clamp(11px, .9vw, 13px); }
.save-state { font-size: clamp(10px, .8vw, 12px); color: var(--dim); }
.save-state.saved { color: var(--ok); }

/* ══ 行2: 工具栏 ══ */
.toolbar {
  height: var(--tool-h); flex: none;
  display: flex; align-items: center; gap: clamp(4px, .5vw, 8px);
  padding: 0 clamp(8px, 1.2vw, 16px);
  background: var(--panel); border-bottom: 1px solid var(--line);
}
.tb-group { display: flex; align-items: center; gap: 3px; }
.tb-sep { width: 1px; height: 60%; background: var(--line); margin: 0 4px; }
.tb-btn {
  min-width: clamp(28px, 2.6vw, 34px); height: clamp(24px, 2.4vh, 30px);
  background: var(--panel2); border: 1px solid var(--line); color: var(--txt);
  border-radius: 6px; cursor: pointer; font-size: clamp(12px, 1vw, 15px);
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 clamp(6px, .6vw, 9px);
}
.tb-btn:hover { background: var(--panel3); }
.tb-btn.active { border-color: var(--acc); color: var(--acc); background: var(--acc-dim); }
.tb-btn.toggle:not(.active) { opacity: .45; }
.tb-snap-step {
  display: inline-flex; align-items: center; gap: 4px; color: var(--dim);
  font-size: clamp(10px, .85vw, 12px); margin-left: 4px;
}
.tb-snap-step input {
  width: clamp(38px, 3.4vw, 48px); background: var(--panel2); border: 1px solid var(--line);
  border-radius: 5px; color: var(--acc); padding: 2px 4px; font-size: clamp(10px, .85vw, 12px);
  font-family: Consolas, monospace;
}
.tb-right { margin-left: auto; }
.btn {
  border: 1px solid var(--line); background: var(--panel2); color: var(--txt);
  padding: clamp(4px, .55vh, 7px) clamp(10px, 1.1vw, 15px);
  border-radius: 7px; cursor: pointer; font-size: clamp(12px, .95vw, 13.5px);
}
.btn:hover { background: var(--panel3); }
.btn.primary { background: var(--acc); border-color: var(--acc); color: #141a24; font-weight: 600; }
.btn.primary:hover { background: #ffb638; }
.btn.ghost { background: transparent; }
.btn.wide { width: 100%; margin-top: 6px; }

/* ══ 主区 ══ */
.workspace { flex: 1; display: flex; min-height: 0; }
.panel { background: var(--panel); display: flex; flex-direction: column; min-height: 0; flex: none; }
.panel.left  { width: var(--left-w);  border-right: 1px solid var(--line); }
.panel.right { width: var(--right-w); border-left: 1px solid var(--line); }
.panel-head {
  padding: clamp(7px, 1vh, 11px) clamp(9px, 1vw, 14px);
  font-size: clamp(11.5px, .95vw, 13.5px); font-weight: 600; color: var(--dim);
  letter-spacing: .05em; border-bottom: 1px solid var(--line); flex: none;
  display: flex; align-items: center; gap: 6px;
}
.panel-head.sub { border-top: 1px solid var(--line); margin-top: clamp(6px, 1vh, 12px); }
.ph-badge {
  background: var(--panel3); border-radius: 8px; padding: 1px 7px;
  font-size: clamp(9.5px, .8vw, 11px); color: var(--acc); font-family: Consolas, monospace;
}

/* 左: 产品目录树 */
.cat-search { padding: clamp(5px, .8vh, 9px) clamp(9px, 1vw, 14px); flex: none; }
.cat-search input {
  width: 100%; background: var(--panel2); border: 1px solid var(--line);
  border-radius: 6px; color: var(--txt); padding: clamp(4px, .55vh, 7px) clamp(8px, .8vw, 11px);
  font-size: clamp(11px, .9vw, 12.5px);
}
.cat-search input:focus { outline: none; border-color: var(--acc); }
.cat-tree { flex: 1; overflow-y: auto; padding: clamp(3px, .5vh, 6px) clamp(4px, .5vw, 7px); }
.cat-group { margin-bottom: 2px; }
.cat-group-head {
  display: flex; align-items: center; gap: 6px;
  padding: clamp(4px, .6vh, 7px) clamp(6px, .7vw, 10px);
  color: var(--dim); font-size: clamp(11px, .9vw, 13px); font-weight: 600;
  cursor: pointer; border-radius: 6px; user-select: none;
}
.cat-group-head:hover { background: var(--panel2); color: var(--txt); }
.cat-group-head .tri { transition: transform .15s ease; font-size: 9px; }
.cat-group.open .cat-group-head .tri { transform: rotate(90deg); }
.cat-group-body { display: none; }
.cat-group.open .cat-group-body { display: block; }
.cat-item {
  display: flex; align-items: center; gap: clamp(6px, .7vw, 10px);
  padding: clamp(5px, .7vh, 9px) clamp(8px, .9vw, 13px) clamp(5px, .7vh, 9px) clamp(16px, 1.8vw, 24px);
  border-radius: 6px; cursor: grab; user-select: none;
  border: 1px solid transparent;
}
.cat-item:hover { background: var(--panel2); border-color: var(--line); }
.cat-item.pending { opacity: .55; }
.cat-item.pending .cat-ico::after { background: repeating-linear-gradient(45deg, #4a5878 0 4px, transparent 4px 8px); }
.cat-item.pending .cat-spec { color: #6b7688; }
.cat-item:active { cursor: grabbing; }
.cat-item.dragging { opacity: .5; }
.cat-ico {
  width: clamp(26px, 2.5vw, 34px); height: clamp(26px, 2.5vw, 34px);
  border-radius: 6px; flex: none; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #2b3a55, #1f2940);
}
.cat-ico::after { content: ""; position: absolute; }
.ci-roller::after { left: 20%; right: 20%; top: 34%; height: 32%; background: repeating-linear-gradient(90deg, #f5a623 0 3px, transparent 3px 8px); }
.ci-belt::after { left: 15%; right: 15%; top: 40%; height: 22%; background: #6b7a94; border-radius: 2px; }
.ci-lift::after { left: 40%; right: 40%; top: 18%; bottom: 18%; background: #6b7a94; border-radius: 2px; }
.ci-turn::after { border: 3px solid #6b7a94; border-radius: 50%; inset: 22%; border-left-color: transparent; }
.ci-work::after { left: 15%; right: 15%; top: 30%; bottom: 30%; background: #6b7a94; border-radius: 3px; }
.ci-acc::after { left: 26%; right: 26%; top: 26%; bottom: 26%; background: #6b7a94; border-radius: 50%; }
.cat-meta { min-width: 0; flex: 1; }
.cat-name { font-size: clamp(11.5px, .95vw, 13.5px); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cat-spec { font-size: clamp(9.5px, .8vw, 11px); color: var(--dim); margin-top: 1px; font-family: Consolas, monospace; }
.panel-foot {
  padding: clamp(5px, .8vh, 9px) clamp(9px, 1vw, 14px); border-top: 1px solid var(--line);
  color: var(--dim); font-size: clamp(10px, .82vw, 11.5px); flex: none;
}

/* 中: 视口 */
.viewport { flex: 1; position: relative; min-width: 0; background: var(--bg); }
.viewport canvas { display: block; }
.vp-hud {
  position: absolute; top: clamp(6px, 1vh, 10px); left: clamp(8px, 1vw, 13px); right: clamp(8px, 1vw, 13px);
  display: flex; justify-content: space-between; align-items: flex-start; pointer-events: none;
}
.hud-chip {
  background: rgba(16,21,30,.85); border: 1px solid var(--line); border-radius: 7px;
  padding: clamp(3px, .5vh, 6px) clamp(8px, .9vw, 12px);
  font-family: Consolas, monospace; font-size: clamp(10.5px, .85vw, 12.5px);
}
.hud-views { display: flex; gap: 4px; pointer-events: auto; }
.view-btn {
  background: rgba(16,21,30,.85); border: 1px solid var(--line); color: var(--dim);
  border-radius: 6px; padding: clamp(2px, .4vh, 5px) clamp(7px, .8vw, 11px);
  cursor: pointer; font-size: clamp(10.5px, .85vw, 12.5px);
}
.view-btn:hover { color: var(--txt); }
.view-btn.active { color: var(--acc); border-color: var(--acc); }
.vp-axis {
  position: absolute; left: clamp(8px, 1vw, 13px); bottom: clamp(8px, 1.2vh, 13px);
  font-family: Consolas, monospace; font-size: clamp(9px, .75vw, 11px); color: var(--dim);
  background: rgba(16,21,30,.75); border: 1px solid var(--line); border-radius: 5px;
  padding: 2px 7px;
}
.vp-empty {
  position: absolute; inset: 0; display: grid; place-content: center; gap: 6px;
  text-align: center; color: var(--dim); pointer-events: none;
}
.vp-empty[hidden] { display: none; }
.vp-empty p { color: var(--txt); font-size: clamp(14px, 1.3vw, 18px); }
.vp-empty span { font-size: clamp(11px, .9vw, 13px); }
.empty-dot { width: clamp(38px, 3.8vw, 52px); height: clamp(38px, 3.8vw, 52px); margin: 0 auto 8px; border-radius: 50%; border: 2px dashed var(--line); }

/* 右: 三页签 */
.rtabs {
  display: flex; flex: none; border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.rtab {
  flex: 1; padding: clamp(6px, .9vh, 10px) 4px; background: none; border: none;
  border-bottom: 2px solid transparent; color: var(--dim); cursor: pointer;
  font-size: clamp(11.5px, .92vw, 13px);
}
.rtab:hover { color: var(--txt); }
.rtab.active { color: var(--acc); border-bottom-color: var(--acc); background: var(--acc-dim); }
.rtab-body { flex: 1; overflow-y: auto; display: flex; flex-direction: column; min-height: 0; }
.nosel { display: grid; place-content: center; gap: 5px; text-align: center; color: var(--dim); padding: 18px; }
.nosel p { color: var(--txt); font-size: clamp(12.5px, 1vw, 14px); }
.nosel span { font-size: clamp(10.5px, .85vw, 12px); }

/* 参数 */
.params { padding: clamp(6px, .9vh, 11px) clamp(9px, 1vw, 13px); display: flex; flex-direction: column; gap: clamp(8px, 1.2vh, 13px); }
.param .p-row { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 3px; }
.param label { font-size: clamp(11px, .9vw, 12.5px); color: var(--dim); }
.param output { font-family: Consolas, monospace; color: var(--acc); font-size: clamp(11.5px, 1vw, 14px); font-weight: 600; }
.param input[type="range"] {
  width: 100%; appearance: none; -webkit-appearance: none; height: 4px;
  background: var(--line); border-radius: 2px; outline: none; cursor: pointer;
}
.param input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: clamp(12px, 1.1vw, 15px); height: clamp(12px, 1.1vw, 15px);
  border-radius: 50%; background: var(--acc); border: 2px solid #141a24; box-shadow: 0 0 0 1px var(--acc);
}
.p-scale { display: flex; justify-content: space-between; color: var(--dim); font-size: clamp(9px, .75vw, 10.5px); margin-top: 2px; font-family: Consolas, monospace; }
.derived { margin: clamp(4px, .6vh, 8px) clamp(9px, 1vw, 13px); background: var(--panel2); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(6px, 1vh, 10px) clamp(8px, .9vw, 12px); display: flex; flex-direction: column; gap: 4px; }
.d-row { display: flex; justify-content: space-between; font-size: clamp(10.5px, .88vw, 12.5px); }
.d-row span { color: var(--dim); }
.d-row b { font-family: Consolas, monospace; font-weight: 600; }

/* 结构树 */
.struct { padding: clamp(4px, .6vh, 7px); }
.st-row {
  display: flex; align-items: center; gap: 7px;
  padding: clamp(4px, .6vh, 7px) clamp(8px, .9vw, 12px);
  border-radius: 6px; cursor: pointer; font-size: clamp(11px, .9vw, 13px);
  border: 1px solid transparent; user-select: none;
}
.st-row:hover { background: var(--panel2); }
.st-row.sel { background: var(--acc-dim); border-color: var(--acc); }
.st-ico { width: 8px; height: 8px; border-radius: 2px; background: var(--blue); flex: none; }
.st-row.sel .st-ico { background: var(--acc); }
.st-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.st-sub { color: var(--dim); font-family: Consolas, monospace; font-size: clamp(9.5px, .8vw, 11px); }
.st-del { color: var(--dim); cursor: pointer; padding: 0 4px; border-radius: 4px; }
.st-del:hover { color: var(--warn); background: rgba(248,113,113,.12); }

/* 订单清单 */
.order-list { flex: 1; overflow-y: auto; padding: clamp(4px, .6vh, 7px) clamp(6px, .7vw, 10px); }
.ol-group { margin-bottom: clamp(6px, .9vh, 10px); }
.ol-gh {
  display: flex; justify-content: space-between; align-items: center;
  padding: 5px 6px; color: var(--dim); font-size: clamp(10.5px, .85vw, 12px);
  border-bottom: 1px solid var(--line);
}
.ol-gh b { color: var(--txt); font-family: Consolas, monospace; }
.ol-row {
  display: flex; align-items: center; gap: 7px;
  padding: clamp(3px, .5vh, 6px) 6px; font-size: clamp(10.5px, .88vw, 12.5px);
}
.ol-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ol-qty { font-family: Consolas, monospace; color: var(--acc); }
.ol-code { font-family: Consolas, monospace; color: var(--dim); font-size: clamp(9px, .75vw, 10.5px); }
.order-foot { flex: none; border-top: 1px solid var(--line); padding: clamp(7px, 1vh, 11px) clamp(9px, 1vw, 13px); }
.of-row { display: flex; justify-content: space-between; font-size: clamp(10.5px, .88vw, 12.5px); margin-bottom: 3px; }
.of-row span { color: var(--dim); }
.of-row b { font-family: Consolas, monospace; }
.of-hint { color: var(--dim); font-size: clamp(9.5px, .8vw, 11px); margin-top: 6px; text-align: center; }

/* ══ 状态栏 ══ */
.statusbar {
  height: var(--status-h); flex: none;
  display: flex; align-items: center; gap: clamp(8px, 1.3vw, 18px);
  padding: 0 clamp(8px, 1.2vw, 16px);
  background: var(--panel); border-top: 1px solid var(--line);
  font-size: clamp(10px, .82vw, 11.5px); color: var(--dim);
}
.st-item { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.st-item b { color: var(--txt); font-weight: 600; }
.st-item.mono { font-family: Consolas, monospace; }
.st-item.right { margin-left: auto; }

::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3a4660; }

/* ══ 右键上下文菜单 ══ */
.ctx-menu {
  position: fixed; z-index: 300; min-width: clamp(170px, 14vw, 220px);
  background: var(--panel2); border: 1px solid var(--line); border-radius: 8px;
  box-shadow: 0 12px 34px rgba(0,0,0,.5); padding: 4px;
}
.ctx-item {
  padding: clamp(5px, .7vh, 8px) clamp(9px, 1vw, 13px); border-radius: 5px;
  font-size: clamp(11.5px, .92vw, 13px); cursor: pointer; color: var(--txt);
}
.ctx-item:hover { background: var(--panel3); }
.ctx-item.primary { color: var(--acc); font-weight: 600; }
.ctx-item.danger:hover { background: rgba(248,113,113,.14); color: var(--warn); }
.ctx-sep { display: block; height: 1px; background: var(--line); margin: 4px 6px; }

/* ══ 模型查看弹窗 ══ */
.modal-mask {
  position: fixed; inset: 0; z-index: 200; background: rgba(6,9,14,.72);
  backdrop-filter: blur(3px); place-items: center; padding: clamp(12px, 3vw, 40px);
}
.modal {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  width: min(clamp(560px, 86vw, 1100px), 100%); height: min(clamp(420px, 78vh, 780px), 100%);
  display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 24px 70px rgba(0,0,0,.6);
}
.modal-head {
  flex: none; display: flex; align-items: center; gap: clamp(8px, 1.2vw, 16px);
  padding: clamp(8px, 1.2vh, 13px) clamp(12px, 1.6vw, 20px);
  border-bottom: 1px solid var(--line);
}
.modal-title { font-size: clamp(13px, 1.1vw, 16px); font-weight: 600; }
.modal-views { margin-left: auto; display: flex; gap: 4px; }
.modal-close {
  background: var(--panel2); border: 1px solid var(--line); color: var(--txt);
  width: clamp(24px, 2.4vw, 30px); height: clamp(24px, 2.4vw, 30px); border-radius: 6px;
  cursor: pointer; font-size: 13px;
}
.modal-close:hover { background: var(--panel3); color: var(--warn); }
.modal-body { flex: 1; min-height: 0; position: relative; }
.modal-body canvas { display: block; }
.modal-foot {
  flex: none; display: flex; justify-content: space-between; align-items: center;
  padding: clamp(6px, 1vh, 10px) clamp(12px, 1.6vw, 20px); border-top: 1px solid var(--line);
  color: var(--dim); font-size: clamp(10px, .85vw, 12px);
}
.mv-spec { font-family: Consolas, monospace; color: var(--txt); }

@media (max-width: 1000px) {
  .panel.left { display: none; }
  :root { --right-w: clamp(210px, 40vw, 280px); }
  .tb-snap-step { display: none; }
}