/* ===== Studio3D 编辑器样式（深色主题） ===== */
/* 🔴 弹窗挂 document.body，变量必须定义在 :root（不能只在 .s3d-root），否则弹窗背景全透明 */
:root{--s-bg:#15181f;--s-panel:#1d212c;--s-panel2:#232838;--s-line:#2c3242;--s-txt:#c7cdd9;--s-dim:#8b93a7;--s-acc:#6366f1;--s-acc2:#a855f7;--s-ok:#22c55e;--s-warn:#f59e0b;--s-bad:#ef4444;}
.s3d-root{
  display:flex;flex-direction:column;height:calc(100vh - 56px);min-height:520px;background:var(--s-bg);color:var(--s-txt);
  font-family:"Plus Jakarta Sans","PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:13px;}
/* 顶栏 */
.s3d-topbar{display:flex;align-items:center;gap:10px;padding:8px 12px;background:var(--s-panel);border-bottom:1px solid var(--s-line);flex:0 0 auto;}
.s3d-left{display:flex;align-items:center;gap:8px;}
.s3d-title{background:var(--s-panel2);border:1px solid var(--s-line);color:var(--s-txt);border-radius:8px;padding:6px 10px;width:200px;font-size:13px;outline:none;}
.s3d-title:focus{border-color:var(--s-acc);}
.s3d-mid{flex:1;display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.s3d-right{display:flex;align-items:center;}
.s3d-hint{color:var(--s-dim);font-size:11px;white-space:nowrap;}
.s3d-sep{width:1px;height:22px;background:var(--s-line);margin:0 4px;}
.s3d-seg{display:inline-flex;background:var(--s-panel2);border:1px solid var(--s-line);border-radius:8px;overflow:hidden;}
.s3d-seg button{background:transparent;border:none;color:var(--s-dim);width:34px;height:32px;cursor:pointer;font-size:15px;}
.s3d-seg button.active{background:linear-gradient(135deg,var(--s-acc),var(--s-acc2));color:#fff;}
/* 按钮 */
.s3d-btn{background:var(--s-panel2,#232838);border:1px solid var(--s-line,#2c3242);color:var(--s-txt,#c7cdd9);border-radius:8px;padding:6px 10px;cursor:pointer;font-size:12.5px;transition:.15s;white-space:nowrap;height:32px;}
.s3d-btn:hover{border-color:var(--s-acc,#6366f1);color:#fff;}
.s3d-btn.ghost{background:transparent;}
.s3d-btn.primary{background:linear-gradient(135deg,var(--s-acc,#6366f1),var(--s-acc2,#a855f7));border:none;color:#fff;font-weight:700;}
.s3d-btn.primary:hover{filter:brightness(1.1);}
.s3d-btn.on{background:var(--s-acc,#6366f1);color:#fff;border-color:var(--s-acc,#6366f1);}
.s3d-btn:disabled{opacity:.45;cursor:not-allowed;}
.s3d-sel{height:32px;padding:4px 6px;background:var(--s-panel2,#232838);border:1px solid var(--s-line,#2c3242);color:var(--s-txt,#c7cdd9);border-radius:8px;}
/* 三栏布局 */
.s3d-body{flex:1;display:flex;min-height:0;}
/* 🔴 左侧栏滚动根因：.s3d-sec 默认 flex-shrink:1 会把各分区压扁（建模/骨骼按钮网格被挤切），
   导致总高不溢出、滚动条不出、看不到全部功能。修法：侧栏 overflow-y:auto + 分区 flex-shrink:0 保持自然高度 */
.s3d-side{width:300px;flex:0 0 300px;background:var(--s-panel);overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;gap:10px;padding:10px;min-height:0;scrollbar-width:thin;scrollbar-color:var(--s-line,#2c3242) transparent;}
.s3d-side.left{border-right:1px solid var(--s-line);}
.s3d-side.right{border-left:1px solid var(--s-line);}
.s3d-side.right{padding-bottom:20px;} /* 末段字段完整可见 */
.s3d-sec{background:var(--s-panel2);border:1px solid var(--s-line);border-radius:10px;padding:9px 10px;position:relative;flex-shrink:0;}
.s3d-sec.grow{flex:1 1 auto;display:flex;flex-direction:column;min-height:160px;overflow:hidden;}
.s3d-sec-title{font-size:12px;font-weight:700;color:#e6e9f1;margin-bottom:8px;display:flex;align-items:center;gap:6px;}
.s3d-sec-title .s3d-cnt{color:var(--s-dim);font-weight:500;font-size:11px;}
/* 添加网格按钮 */
.s3d-addgrid{display:grid;grid-template-columns:1fr 1fr;gap:6px;}
.s3d-addgrid button{background:var(--s-panel);border:1px solid var(--s-line);color:var(--s-txt);border-radius:7px;padding:7px 6px;cursor:pointer;font-size:12px;text-align:left;transition:.15s;}
.s3d-addgrid button:hover{border-color:var(--s-acc);background:#2a3043;color:#fff;}
/* 视口 */
.s3d-viewport{flex:1;position:relative;min-width:0;background:#0f1117;overflow:hidden;}
#s3d-canvas{display:block;width:100%;height:100%;}
.s3d-status{position:absolute;left:10px;bottom:10px;font-size:11px;color:var(--s-dim);background:rgba(0,0,0,.45);padding:4px 9px;border-radius:6px;pointer-events:none;}
.s3d-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;color:var(--s-dim);background:rgba(15,17,23,.85);}
.s3d-spin{width:34px;height:34px;border:3px solid var(--s-line);border-top-color:var(--s-acc);border-radius:50%;animation:s3dspin 1s linear infinite;}
@keyframes s3dspin{to{transform:rotate(360deg);}}
.s3d-modebadge{position:absolute;top:10px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--s-acc),var(--s-acc2));color:#fff;padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600;box-shadow:0 4px 14px rgba(99,102,241,.4);}
.s3d-sculpt-panel{position:absolute;left:50%;bottom:48px;transform:translateX(-50%);display:flex;align-items:center;gap:14px;background:rgba(29,33,44,.96);border:1px solid var(--s-line);border-radius:12px;padding:10px 14px;box-shadow:0 8px 28px rgba(0,0,0,.5);z-index:20;flex-wrap:wrap;justify-content:center;max-width:90%;}
.s3d-sculpt-brushes{display:inline-flex;gap:6px;}
.s3d-sculpt-brushes button{background:var(--s-panel2);border:1px solid var(--s-line);color:var(--s-txt);border-radius:7px;padding:6px 12px;cursor:pointer;font-size:12px;}
.s3d-sculpt-brushes button.on{background:linear-gradient(135deg,var(--s-acc),var(--s-acc2));color:#fff;border-color:transparent;font-weight:700;}
.s3d-sculpt-sliders{display:inline-flex;gap:14px;}
.s3d-sculpt-sliders label{display:flex;flex-direction:column;font-size:11px;color:var(--s-dim);gap:3px;width:130px;}
.s3d-sculpt-sliders label .val{color:var(--s-acc2);font-weight:700;font-size:11px;}
.s3d-sculpt-sliders input[type=range]{width:100%;accent-color:var(--s-acc);cursor:pointer;}
/* 场景树 */
.s3d-tree{overflow-y:auto;flex:1;font-size:12px;}
.s3d-trow{display:flex;align-items:center;gap:6px;padding:4px 6px;border-radius:6px;cursor:pointer;}
.s3d-trow:hover{background:#2a3043;}
.s3d-trow.sel{background:linear-gradient(90deg,rgba(99,102,241,.35),transparent);box-shadow:inset 2px 0 0 var(--s-acc);}
.s3d-tcheck{width:14px;}
.s3d-ticon{width:18px;text-align:center;}
.s3d-tname{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.s3d-tstat{color:var(--s-dim);font-size:10px;}
.s3d-tacts{display:none;gap:2px;}
.s3d-trow:hover .s3d-tacts{display:flex;}
.s3d-tacts button{background:transparent;border:none;cursor:pointer;font-size:12px;padding:1px 3px;border-radius:4px;}
.s3d-tree-empty{color:var(--s-dim);font-size:12px;text-align:center;padding:18px 6px;line-height:1.7;}
/* 图层 */
.s3d-layer-row{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:5px 2px;font-size:12px;}
.s3d-layer-row label{display:flex;align-items:center;gap:5px;flex:1;cursor:pointer;}
.s3d-layer-row button{background:transparent;border:1px solid var(--s-line);color:var(--s-dim);border-radius:5px;padding:2px 6px;font-size:11px;cursor:pointer;}
.s3d-layer-row button:hover{color:#fff;border-color:var(--s-acc);}
.s3d-addgrid input.s3d-in{width:100%;}
/* 检查器面板 */
.s3d-panel-empty{color:var(--s-dim);font-size:12px;padding:14px 4px;text-align:center;}
#s3d-panel-body{flex:1 1 auto;overflow-y:auto;min-height:0;}
.s3d-fld{display:flex;flex-direction:column;gap:4px;margin-bottom:10px;}
.s3d-fld>label{font-size:11px;color:var(--s-dim);font-weight:600;display:flex;align-items:center;justify-content:space-between;}
.s3d-fld>label .val{color:var(--s-acc2);font-weight:700;font-size:11px;}
.s3d-fldrow{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px;margin-bottom:10px;}
.s3d-fldrow .s3d-fld{margin-bottom:0;}
.s3d-in{background:var(--s-panel);border:1px solid var(--s-line);color:var(--s-txt);border-radius:7px;padding:6px 8px;font-size:12.5px;outline:none;width:100%;}
.s3d-in:focus{border-color:var(--s-acc);}
.s3d-in.num{font-family:ui-monospace,monospace;}
.s3d-fld input[type=color]{height:30px;padding:2px;cursor:pointer;border:1px solid var(--s-line);border-radius:6px;background:var(--s-panel);}
.s3d-fld input[type=range]{width:100%;accent-color:var(--s-acc);cursor:pointer;margin:2px 0;}
.s3d-fld.chk{flex-direction:row;align-items:center;justify-content:space-between;flex-direction:row;}
.s3d-fld.chk>label{font-size:12px;color:var(--s-txt);}
.s3d-sub{font-size:11px;font-weight:700;color:var(--s-acc2);margin:8px 0 6px;text-transform:uppercase;letter-spacing:.04em;}
.s3d-presets{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:10px;}
.s3d-chip{background:var(--s-panel);border:1px solid var(--s-line);color:var(--s-txt);border-radius:14px;padding:4px 10px;font-size:11px;cursor:pointer;}
.s3d-chip:hover{border-color:var(--s-acc);color:#fff;}
/* 视图菜单 / 模态 */
.s3d-viewmenu{position:absolute;top:48px;left:50%;transform:translateX(-50%);display:flex;gap:4px;background:var(--s-panel);border:1px solid var(--s-line);border-radius:10px;padding:6px;z-index:30;box-shadow:0 8px 30px rgba(0,0,0,.5);}
.s3d-viewmenu button{background:var(--s-panel2);border:1px solid var(--s-line);color:var(--s-txt);border-radius:7px;padding:6px 10px;cursor:pointer;font-size:12px;}
.s3d-viewmenu button:hover{border-color:var(--s-acc);color:#fff;}
.s3d-modal-mask{position:fixed;inset:0;background:rgba(8,10,15,.72);display:flex;align-items:center;justify-content:center;z-index:9999;backdrop-filter:blur(3px);animation:s3dFadeIn .16s ease;}
/* 🔴 弹窗双保险：var() 带 fallback 实色，即使变量丢失也不透明；弹窗挂 body 取不到 .s3d-root 变量 */
.s3d-modal{background:var(--s-panel,#1d212c);border:1px solid var(--s-line,#2c3242);border-radius:14px;padding:18px;width:340px;max-width:92vw;max-height:86vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.65);color:var(--s-txt,#c7cdd9);animation:s3dPopIn .18s cubic-bezier(.2,.9,.3,1.2);}
/* 标题栏 sticky：长内容滚动时标题恒在顶部（UI 规范） */
.s3d-modal-title{position:sticky;top:-18px;margin:-18px -18px 14px;padding:12px 18px;font-size:15px;font-weight:700;color:#fff;background:linear-gradient(180deg,#242a3a 0%,#1d212c 100%);border-bottom:1px solid var(--s-line,#2c3242);border-radius:14px 14px 0 0;z-index:2;}
.s3d-modal-title::before{content:'';display:inline-block;width:4px;height:14px;background:linear-gradient(180deg,var(--s-acc,#6366f1),var(--s-acc2,#a855f7));border-radius:2px;margin-right:8px;vertical-align:-1px;}
.s3d-modal .s3d-fld{margin-bottom:10px;}
.s3d-modal .s3d-fld label{color:var(--s-dim,#8b93a7);}
.s3d-modal .s3d-in{background:var(--s-panel2,#232838);border:1px solid var(--s-line,#2c3242);color:var(--s-txt,#c7cdd9);border-radius:8px;padding:8px 10px;font-size:12px;width:100%;box-sizing:border-box;}
.s3d-modal .s3d-in:focus{outline:none;border-color:var(--s-acc,#6366f1);}
/* 弹窗内按钮行（横排、等宽） */
.s3d-modal-actions{display:flex;gap:8px;margin-top:14px;}
.s3d-modal-actions .s3d-btn{flex:1;margin-top:0 !important;width:auto !important;}
.s3d-modal-msg{font-size:13px;line-height:1.7;color:var(--s-txt,#c7cdd9);white-space:pre-wrap;word-break:break-word;}
@keyframes s3dFadeIn{from{opacity:0;}to{opacity:1;}}
@keyframes s3dPopIn{from{opacity:0;transform:scale(.94) translateY(8px);}to{opacity:1;transform:scale(1) translateY(0);}}
.s3d-import-list{display:flex;flex-direction:column;gap:6px;margin-bottom:12px;max-height:50vh;overflow-y:auto;}
.s3d-import-item{display:flex;flex-direction:column;align-items:flex-start;gap:2px;background:var(--s-panel2,#232838);border:1px solid var(--s-line,#2c3242);border-radius:8px;padding:9px 11px;cursor:pointer;color:var(--s-txt,#c7cdd9);text-align:left;}
.s3d-import-item:hover{border-color:var(--s-acc,#6366f1);background:#2a3043;}
.s3d-import-name{font-size:13px;font-weight:600;color:#fff;}
.s3d-import-sub{font-size:11px;color:var(--s-dim,#8b93a7);}
.s3d-modal .s3d-btn{width:100%;margin-top:8px;}
.s3d-modal .s3d-btn.ghost{margin-top:8px;}
/* 测量浮标（挂 body，须带 fallback 实色） */
.s3d-measure-lab{position:fixed;z-index:9998;background:var(--s-ok,#22c55e);color:#06210f;font-size:12px;font-weight:700;padding:3px 8px;border-radius:6px;pointer-events:none;box-shadow:0 3px 10px rgba(34,197,94,.4);}
/* 滚动条 */
.s3d-side::-webkit-scrollbar,.s3d-tree::-webkit-scrollbar,.s3d-modal::-webkit-scrollbar,.s3d-import-list::-webkit-scrollbar{width:8px;height:8px;}
.s3d-side::-webkit-scrollbar-thumb,.s3d-tree::-webkit-scrollbar-thumb,.s3d-modal::-webkit-scrollbar-thumb,.s3d-import-list::-webkit-scrollbar-thumb{background:var(--s-line,#2c3242);border-radius:4px;}
.s3d-side::-webkit-scrollbar-thumb:hover,.s3d-tree::-webkit-scrollbar-thumb:hover,.s3d-modal::-webkit-scrollbar-thumb:hover{background:#3a4156;}
/* 骨骼绑定工具条：让"套进去调整就行"可见（状态+一键动作） */
.s3d-bindbar{display:flex;flex-direction:column;gap:6px;margin:2px 0 2px;}
.s3d-bind-status{font-size:11px;color:var(--s-dim,#8b93a7);line-height:1.5;}
.s3d-bind-status.on{color:var(--s-ok,#22c55e);font-weight:600;}
.s3d-bind-actions{display:flex;gap:5px;flex-wrap:wrap;}
.s3d-mini{background:var(--s-panel,#1d212c);border:1px solid var(--s-line,#2c3242);color:var(--s-txt,#c7cdd9);border-radius:6px;padding:4px 8px;font-size:11px;cursor:pointer;white-space:nowrap;}
.s3d-mini:hover{border-color:var(--s-acc,#6366f1);color:#fff;}
.s3d-mini.on{border-color:var(--s-acc,#6366f1);color:#fff;}
/* 骨骼层级树（场景内查看/调整层次）：递归父子嵌套、选中高亮、单骨重置 */
.s3d-bonetree{display:flex;flex-direction:column;gap:1px;margin:8px 0 4px;max-height:34vh;overflow-y:auto;background:var(--s-panel,#1d212c);border:1px solid var(--s-line,#2c3242);border-radius:8px;padding:4px;}
.s3d-bonetree::-webkit-scrollbar{width:8px;}
.s3d-bonetree::-webkit-scrollbar-thumb{background:var(--s-line,#2c3242);border-radius:4px;}
.s3d-bonerow{display:flex;align-items:center;gap:6px;padding:4px 6px;border-radius:6px;cursor:pointer;color:var(--s-txt,#c7cdd9);font-size:12px;line-height:1.2;user-select:none;}
.s3d-bonerow:hover,.s3d-bonerow.hov{background:#262c3b;}
.s3d-bonerow.sel{background:rgba(34,211,238,.16);color:#eafdff;box-shadow:inset 0 0 0 1px rgba(34,211,238,.5);}
.s3d-bone-dot{width:8px;height:8px;border-radius:50%;background:var(--s-acc,#6366f1);flex:0 0 auto;box-shadow:0 0 0 2px rgba(99,102,241,.18);}
.s3d-bonerow.sel .s3d-bone-dot{background:var(--s-cyan,#22d3ee);box-shadow:0 0 0 2px rgba(34,211,238,.35);}
.s3d-bone-nm{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.s3d-bone-reset{background:transparent;border:none;color:var(--s-dim,#8b93a7);cursor:pointer;font-size:13px;padding:2px 4px;border-radius:5px;opacity:0;transition:opacity .12s;}
.s3d-bonerow:hover .s3d-bone-reset,.s3d-bonerow.sel .s3d-bone-reset{opacity:1;}
.s3d-bone-reset:hover{background:#313848;color:#fff;}