/* =========================================================
   features.css — 對話框與各項新功能的外觀
   （版面與基本元件在 app.css，畫布在 circuit.css）
   ========================================================= */

/* hidden 屬性一律勝過元件自己的 display（否則 display:flex 的面板藏不起來） */
[hidden]{display:none !important}

/* ---------- 主要按鈕 ---------- */
.btn.primary{background:var(--accent);border-color:var(--accent);color:#08111f;font-weight:700}
.btn.primary:hover{background:#6db3ff;border-color:#6db3ff}
.btn .bi{margin-right:5px;font-size:13px;line-height:1}
.btn.wide{width:100%;margin-top:8px;padding:10px}

/* ---------- 對話框 ---------- */
.dlg-back{
  position:fixed;inset:0;z-index:200;
  background:rgba(4,7,13,.62);backdrop-filter:blur(2px);
  display:flex;align-items:center;justify-content:center;padding:18px;
  opacity:0;transition:opacity .16s;
}
.dlg-back.show{opacity:1}
.dlg{
  width:min(520px,100%);min-width:0;max-height:min(86vh,760px);   /* min-width:0：內容再寬也不會把視窗撐出螢幕 */
  display:flex;flex-direction:column;
  background:var(--panel);border:1px solid var(--line);border-radius:14px;
  box-shadow:0 24px 60px rgba(0,0,0,.55);
  transform:translateY(8px);transition:transform .16s;
  user-select:text;-webkit-user-select:text;
}
.dlg.wide{width:min(860px,100%)}
.dlg-back.show .dlg{transform:none}
.dlg-hd{display:flex;align-items:center;gap:10px;padding:14px 16px 10px;border-bottom:1px solid var(--line-soft)}
.dlg-hd h2{margin:0;font-size:15px;font-weight:700;flex:1;letter-spacing:.3px}
.dlg-x{
  width:32px;height:32px;border-radius:8px;border:1px solid transparent;
  background:transparent;color:var(--txt-dim);cursor:pointer;font-size:14px;
}
.dlg-x:hover{background:var(--panel-2);border-color:var(--line);color:var(--txt)}
.dlg-bd{padding:14px 16px 16px;overflow:auto;-webkit-overflow-scrolling:touch}
.dlg-note{margin:0 0 12px;color:var(--txt-dim);line-height:1.6;font-size:13px}
.dlg-warn{margin:0 0 12px;padding:9px 11px;border-radius:8px;font-size:12.5px;line-height:1.6;
  background:rgba(255,194,71,.08);border:1px solid rgba(255,194,71,.28);color:var(--hot-soft)}
.dlg-meta{margin:8px 0 0;font-size:11.5px;color:var(--txt-faint)}
.dlg-meta .warn,.dlg-bd .warn{color:var(--hot)}
.dlg-row{display:flex;gap:8px;align-items:stretch}
.dlg-input,.dlg-area{
  flex:1;min-width:0;background:#0e1422;color:var(--txt);
  border:1px solid var(--line);border-radius:8px;padding:8px 10px;
  font:12px/1.5 ui-monospace,"Cascadia Mono",Consolas,monospace;
}
.dlg-area{width:100%;resize:vertical;min-height:74px}
.dlg-input:focus,.dlg-area:focus{outline:none;border-color:var(--accent)}
.dlg-sec{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line)}
.dlg-sec h3{margin:0 0 10px;font-size:13px;font-weight:700;color:var(--txt)}
.dlg-opts{display:flex;flex-wrap:wrap;gap:8px 16px;margin:0 0 10px}
.dlg-opts label{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--txt-dim);cursor:pointer;min-height:28px}
.dlg-opts input{accent-color:var(--accent);width:16px;height:16px}
.dlg-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:12px;flex-wrap:wrap}

/* ---------- 手機：對話框改成底部面板、按鈕加大 ---------- */
@media (max-width:640px){
  .dlg-back{align-items:flex-end;padding:0}
  .dlg,.dlg.wide{width:100%;max-height:88vh;border-radius:16px 16px 0 0;border-bottom:0;transform:translateY(24px)}
  .dlg .btn{min-height:40px}
  .dlg-row{flex-direction:column}
  .dlg-x{width:40px;height:40px}
}

/* ---------- 嵌入模式 ---------- */
/* 注意：#app 是 grid，隱藏欄位不能用 display:none（會讓後面的欄位整排前移），
   一律改成欄寬 0 + visibility:hidden */
body.embed #topbar{display:none}
body.embed #app{height:100vh;grid-template-columns:0 0 minmax(0,1fr) 0 var(--right-w)}
body.embed .splitter{visibility:hidden;overflow:hidden}
body.embed #empty-hint p{font-size:13px}
#embed-open{
  position:absolute;top:10px;right:10px;z-index:12;
  display:flex;align-items:center;gap:6px;
  padding:6px 10px;border-radius:8px;text-decoration:none;
  font-size:12px;font-weight:600;color:var(--txt-dim);
  background:rgba(20,27,43,.92);border:1px solid var(--line);
  transition:.14s;
}
#embed-open:hover{color:var(--txt);border-color:var(--accent)}
#embed-open .logo{color:var(--hot);text-shadow:var(--glow)}
#embed-open .arr{color:var(--accent)}
/* 窄的 iframe（或手機）：右側面板收起來，只留畫布 */
@media (max-width:640px){
  body.embed #app{grid-template-columns:0 0 minmax(0,1fr) 0 0}
  body.embed #truth-panel{visibility:hidden;overflow:hidden;padding:0;border:0;min-width:0}
}

/* ---------- 唯讀：藏起所有會改電路的控制項 ---------- */
body.ro #mode-bar button[data-mode],
body.ro #mode-bar .bar-sep,
body.ro #btn-undo,body.ro #btn-redo,body.ro #btn-clear,
body.ro .comp .comp-tools,body.ro .comp .resize-handle{display:none}
body.ro #canvas{cursor:grab}
body.ro .comp{cursor:default}
body.ro .comp.SWITCH,body.ro .comp.CLOCK,body.ro .comp.LED{cursor:pointer}

/* ---------- 對話框裡的小表單 ---------- */
.dlg-select,.dlg-num{
  background:#0e1422;color:var(--txt);border:1px solid var(--line);border-radius:6px;
  padding:4px 6px;font:inherit;font-size:12.5px;
}
.dlg-num{width:74px}
.dlg-select:focus,.dlg-num:focus{outline:none;border-color:var(--accent)}

/* =========================================================
   版面固定欄位
   #app 的子元素各自指定 grid-column：這樣任何一欄被隱藏、
   改成浮動抽屜，其他欄都不會跟著位移。
   ========================================================= */
#palette{grid-column:1;grid-row:1}
.splitter[data-side="left"]{grid-column:2;grid-row:1}
#stage{grid-column:3;grid-row:1}
.splitter[data-side="right"]{grid-column:4;grid-row:1}
#truth-panel{grid-column:5;grid-row:1}

/* 觸控：畫布上的手勢自己處理，不讓瀏覽器拿去捲動頁面 */
#canvas,#palette .pal-item,#mode-bar,#zoom-ctl{touch-action:none}
#mode-bar button{white-space:nowrap}
/* 手指比滑鼠粗：接腳的感應圈放大 */
@media (pointer:coarse){
  /* 長按只出現我們自己的選單（ui/canvas.js）：iPhone／iPad 不要跳出系統的放大鏡、分享選單，也不要選到字 */
  body{-webkit-touch-callout:none}
  #truth-panel{user-select:none;-webkit-user-select:none}
  #truth-panel input,#truth-panel textarea{user-select:text;-webkit-user-select:text}
  .comp .hit{r:15px}
  #mode-bar button{min-height:36px}
  #zoom-ctl button{width:34px;height:34px}
}
/* 平板（觸控、側邊欄版面）：元件幾乎佔滿整個元件庫，不讓瀏覽器捲動的話手指幾乎滑不動。
   改成上下滑＝捲動元件庫，往右拖＝把元件拉到畫布（瀏覽器接手捲動時，ui/canvas.js 會取消這次拖曳） */
@media (pointer:coarse) and (min-width:761px){
  #palette .pal-item{touch-action:pan-y}
  #palette{overscroll-behavior:contain}
}

/* 手機才用得到的元件：元件列的分類標籤、最下面的切換列、空畫布的手機版提示 */
.pal-tabs,#m-nav,#empty-hint .eh-narrow{display:none}
@media (max-width:760px){
  #empty-hint p[data-i18n="stage.empty"]{display:none}
  #empty-hint .eh-narrow{display:block}
}

/* =========================================================
   手機／窄螢幕（≤760px）：上下排
     畫布（佔滿剩下的高度）
     表格（選了真值表／時序圖…才出現，佔下半部，上面還看得到電路）
     元件列（分類標籤＋可以左右滑的元件，往上拖到畫布；表格出現時藏起來）
     切換列（電路｜真值表｜時序圖｜布林式｜卡諾圖）
   右欄「展開」＝顯示表格，沿用桌機的收合狀態（ui/layout.js）；左欄的收合在手機上沒有作用。
   嵌入模式（body.embed）不用這一套。
   ========================================================= */
@media (max-width:760px){
  #topbar{gap:8px;padding:0 8px}
  #topbar .btn{padding:8px 10px}

  body:not(.embed) #app,body:not(.embed) #app.no-left,body:not(.embed) #app.no-right{
    grid-template-columns:minmax(0,1fr) !important;
    grid-template-rows:minmax(0,1fr) auto auto auto;
    height:calc(100vh - 52px);height:calc(100dvh - 52px);   /* 手機瀏覽器的網址列會縮放，用 dvh 才不會被切掉 */
  }
  body:not(.embed) .splitter{display:none}
  body:not(.embed) #stage{grid-column:1;grid-row:1}

  /* 表格 */
  body:not(.embed) #truth-panel{
    grid-column:1;grid-row:2;height:min(50vh,460px);min-height:0;
    border-left:0;border-top:1px solid var(--line);box-shadow:0 -10px 30px rgba(0,0,0,.35);
  }
  body:not(.embed) #app.no-right #truth-panel{display:none}
  body:not(.embed) .panel-tabs{display:none}

  /* 元件列 */
  body:not(.embed) #palette,body:not(.embed) #app.no-left #palette{
    grid-column:1;grid-row:3;visibility:visible;overflow:hidden;
    min-height:122px;                    /* 元件列的高度先留好：內容是程式產生的，不留的話畫布會被擠一下 */
    display:flex;flex-direction:column;padding:0;
    border-right:0;border-top:1px solid var(--line);
  }
  body:not(.embed) #app:not(.no-right) #palette{display:none}
  .pal-tabs{display:flex;gap:6px;overflow-x:auto;padding:8px 10px 2px;scrollbar-width:none}
  .pal-tabs::-webkit-scrollbar,#palette .pal-list::-webkit-scrollbar{display:none}
  .pal-tab{
    flex:none;padding:6px 12px;border-radius:999px;cursor:pointer;white-space:nowrap;
    background:var(--panel-2);border:1px solid var(--line);color:var(--txt-dim);
    font:600 12.5px/1.2 inherit;
  }
  .pal-tab.on{background:var(--accent);border-color:var(--accent);color:#08111f}
  #palette .pal-group{display:none;border:0}
  #palette .pal-group.m-on{display:block}
  #palette .pal-head{display:none}
  #palette .pal-group .pal-list{
    display:flex;flex-direction:row;gap:8px;overflow-x:auto;padding:8px 10px 10px;scrollbar-width:none;
  }
  #palette .pal-item{
    flex:none;width:78px;flex-direction:column;gap:3px;padding:6px 4px 5px;
    touch-action:pan-x;                  /* 左右滑＝捲動元件列；往上拖＝拖到畫布 */
  }
  #palette .pal-item:hover{transform:none}
  #palette .pal-item .gsvg{width:48px;height:30px}
  #palette .pal-item .nm{font-size:11px;text-align:center;max-width:72px;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  #palette .pal-item .nm small{display:none}
  #palette .pal-combo .combo-thumb{width:60px;height:34px}

  /* 切換列 */
  body:not(.embed) #m-nav{
    display:flex;grid-column:1;grid-row:4;background:var(--panel);border-top:1px solid var(--line);
    padding:4px 4px calc(4px + env(safe-area-inset-bottom));
  }
  #m-nav button{
    flex:1;min-width:0;min-height:37px;  /* 文字是程式填的，先留好高度 */background:none;border:0;border-radius:8px;cursor:pointer;
    padding:9px 2px;font:600 12.5px/1.2 inherit;color:var(--txt-faint);white-space:nowrap;
  }
  #m-nav button.on{color:var(--accent);background:rgba(78,161,255,.12)}

  #mode-bar{left:10px;transform:none;bottom:10px}
  #mode-bar .lb{display:none}
  #mode-bar button{padding:7px 10px}
  #mode-bar button .ic{font-size:15px}
  /* 縮放鈕改成直排、疊在播放列上方右側，兩者才不會搶同一塊位置 */
  #zoom-ctl{right:10px;bottom:64px;flex-direction:column}
  #zoom-val{display:none}
  #status-bar{bottom:62px}
}

/* ---------- 範例庫 ---------- */
.ex-h{margin:16px 0 8px;font-size:11.5px;font-weight:700;letter-spacing:.8px;color:var(--txt-faint);text-transform:uppercase}
.ex-h:first-of-type{margin-top:4px}
.ex-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}
.ex-card{
  display:flex;align-items:center;gap:12px;text-align:left;
  background:var(--panel-2);border:1px solid var(--line-soft);border-radius:10px;
  padding:10px 12px;cursor:pointer;transition:.14s;min-height:64px;
}
.ex-card:hover{border-color:var(--accent);background:#1d2942;transform:translateY(-1px)}
.ex-card:active{transform:none}
.ex-ic{flex:none;width:56px;height:40px;display:flex;align-items:center;justify-content:center}
.ex-ic .gsvg{max-width:56px;max-height:40px;width:auto;height:auto}
.ex-tx{display:flex;flex-direction:column;gap:3px;min-width:0}
.ex-tx b{font-size:13px;color:var(--txt)}
.ex-tx span{font-size:11.5px;line-height:1.45;color:var(--txt-dim)}
@media (max-width:640px){ .ex-grid{grid-template-columns:1fr} }

/* ---------- 本機存檔 ---------- */
.dlg-label{display:block;font-size:12px;color:var(--txt-dim);margin:0 0 6px}
#stage.file-over::after{
  content:"";position:absolute;inset:10px;z-index:50;pointer-events:none;
  border:2px dashed var(--accent);border-radius:14px;background:rgba(78,161,255,.07);
}

/* ---------- 布林式轉電路 ---------- */
.b2c{padding:10px 12px 12px;border-bottom:1px solid var(--line-soft);background:rgba(78,161,255,.035)}
.b2c > label{display:block;font-size:12px;font-weight:700;color:var(--txt);margin-bottom:7px}
.b2c-row{display:flex;gap:6px}
#b2c-in{
  flex:1;min-width:0;background:#0e1422;color:var(--txt);border:1px solid var(--line);border-radius:7px;
  padding:7px 9px;font:14px/1.3 ui-monospace,"Cascadia Mono",Consolas,monospace;
}
#b2c-in:focus{outline:none;border-color:var(--accent)}
.b2c-keys{display:flex;flex-wrap:wrap;gap:4px;margin:7px 0 0}
.b2c-keys button{
  min-width:30px;height:28px;padding:0 6px;border-radius:6px;cursor:pointer;
  background:var(--panel-2);border:1px solid var(--line-soft);color:var(--txt-dim);
  font:14px ui-monospace,Consolas,monospace;
}
.b2c-keys button:hover{color:var(--txt);border-color:var(--accent)}
#b2c-preview{margin-top:8px;font-size:12px;line-height:1.55;min-height:18px}
#b2c-preview .bl-eq{margin:2px 0}
#b2c-preview .dim{color:var(--txt-faint)}
.b2c-err{display:block;color:#ff9c9c}
.b2c-src{display:block;margin-top:3px;font:12px ui-monospace,Consolas,monospace;color:var(--txt-dim);white-space:pre-wrap;word-break:break-all}
.b2c-src mark{background:rgba(255,90,90,.35);color:#fff;border-radius:2px;outline:1px solid #ff6b6b}
.b2c-opts{display:flex;flex-wrap:wrap;gap:4px 14px;margin-top:6px}
.b2c-opts label{display:flex;align-items:center;gap:5px;font-size:11.5px;color:var(--txt-dim);cursor:pointer;min-height:24px}
.b2c-opts input{accent-color:var(--accent)}
@media (pointer:coarse){
  #b2c-in{font-size:16px}                 /* iOS：小於 16px 會自動放大頁面 */
  .b2c-keys button{min-width:38px;height:36px}
}
body.ro .b2c{display:none}

/* ---------- 卡諾圖 ---------- */
#km-view{overflow:auto}
#km-info{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;
  padding:10px 12px;border-bottom:1px solid var(--line-soft);font-size:12px;color:var(--txt-dim)}
.km-outs{display:flex;gap:4px;flex-wrap:wrap}
.km-outs button{min-width:34px;height:26px;padding:0 8px;border-radius:6px;cursor:pointer;font-weight:700;
  background:var(--panel-2);border:1px solid var(--line-soft);color:var(--txt-dim)}
.km-outs button.on{background:var(--hot);border-color:var(--hot);color:#2a1c02}
.km-edit{display:flex;align-items:center;gap:5px;cursor:pointer}
.km-edit input{accent-color:var(--accent)}
#km-body{padding:12px}
.km-wrap{display:flex;justify-content:center;overflow-x:auto}
.km-svg{max-width:100%;height:auto;user-select:none}
.km-diag{stroke:var(--line);stroke-width:1}
.km-ax{fill:var(--accent);font-size:11px;font-weight:700}
.km-code{fill:var(--txt-faint);font:11px ui-monospace,Consolas,monospace;text-anchor:middle}
.km-cell rect{fill:#0e1422;stroke:var(--line);stroke-width:1}
.km-cell.one rect{fill:rgba(255,194,71,.10)}
.km-cell .km-v{fill:var(--txt-faint);font:600 15px ui-monospace,Consolas,monospace;text-anchor:middle}
.km-cell.one .km-v{fill:var(--hot)}
.km-cell.dc .km-v{fill:var(--txt-dim)}
.km-cell .km-m{fill:#3d4a66;font-size:8.5px;text-anchor:end}
.km-cell.edited rect{stroke:var(--accent);stroke-dasharray:3 2}
#km-view:has(#km-edit:checked) .km-cell{cursor:pointer}
#km-view:has(#km-edit:checked) .km-cell:hover rect{fill:#18233a}
.km-grp{fill:color-mix(in srgb,var(--c) 10%,transparent);stroke:var(--c);stroke-width:2;pointer-events:none;transition:.12s}
.km-grp.on{fill:color-mix(in srgb,var(--c) 26%,transparent);stroke-width:3}
.km-res{margin-top:12px}
.km-sum{font:11.5px ui-monospace,Consolas,monospace;color:var(--txt-faint);margin:4px 0 8px}
.km-terms{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:3px}
.km-terms li{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:6px;cursor:pointer;font-size:13px}
.km-terms li .sw{width:12px;height:12px;border-radius:4px;border:2px solid var(--c);flex:none}
.km-terms li .m{margin-left:auto;font-size:11px;color:var(--txt-faint)}
.km-terms li.on,.km-terms li:hover{background:color-mix(in srgb,var(--c) 14%,transparent)}
.km-note{font-size:11.5px;color:var(--txt-faint);line-height:1.6;margin:10px 0 0}
@media (pointer:coarse){ .km-outs button{height:34px;min-width:40px} }

/* ---------- 訊號傳遞動畫 ---------- */
#mode-bar #btn-prop.on{background:#7c5cff;color:#fff;font-weight:700}
#prop-hud{
  position:absolute;top:12px;left:50%;transform:translateX(-50%);z-index:11;
  padding:6px 12px;border-radius:8px;font-size:12px;color:var(--txt-dim);
  background:rgba(20,27,43,.94);border:1px solid #4a3d8f;white-space:nowrap;
  pointer-events:none;
}
#prop-hud b{color:#b8a8ff}
#prop-hud .warn{color:var(--hot)}
.comp.prop-hit .body,.comp.prop-hit .sw-body,.comp.prop-hit .led-ring{
  stroke:#a58bff !important;stroke-width:3 !important;
  filter:drop-shadow(0 0 6px rgba(165,139,255,.9));
}
.wire-g.prop-hit .wire{stroke-width:4.5 !important;filter:drop-shadow(0 0 4px rgba(165,139,255,.85))}
@media (max-width:760px){ #prop-hud{top:8px;font-size:11px;max-width:92%;white-space:normal;text-align:center} }
body.embed #prop-hud{top:48px}

/* ---------- 關卡挑戰 ---------- */
#ch-bar{
  position:absolute;top:10px;left:10px;right:10px;z-index:12;
  display:flex;align-items:center;gap:8px 14px;flex-wrap:wrap;
  padding:8px 10px 8px 12px;border-radius:10px;
  background:rgba(22,30,48,.96);border:1px solid #6b5a2a;box-shadow:0 8px 24px rgba(0,0,0,.4);
}
#ch-bar .ch-t{display:flex;align-items:baseline;gap:8px;min-width:0;flex:1 1 260px}
#ch-bar .ch-t b{color:var(--hot);font-size:13.5px;white-space:nowrap}
#ch-bar .ch-p{color:var(--txt-dim);font-size:12px;overflow:hidden;text-overflow:ellipsis}
#ch-bar .ch-meta{font-size:11.5px;color:var(--txt-faint)}
.ch-parts{color:var(--accent)}
#ch-bar .ch-btns{display:flex;gap:6px;margin-left:auto}
body.in-challenge #prop-hud{top:64px}
body.in-challenge .b2c{opacity:.45;pointer-events:none}
.ch-card{align-items:flex-start}
.ch-lv{flex:none;font-size:8px;letter-spacing:1px;color:var(--hot);padding-top:4px;width:44px}
.ch-lv i{font-style:normal;color:#2b3450}
.ch-card .ch-parts{font-size:11px}
.ch-got{flex:none;margin-left:auto;color:#2f3a55;font-size:13px;letter-spacing:1px}
.ch-got.has{color:var(--hot)}
.ch-result{text-align:center;padding:6px 0 4px}
.ch-stars{font-size:34px;letter-spacing:6px;color:var(--hot);text-shadow:var(--glow)}
.ch-result p{color:var(--txt-dim);margin:8px 0 0;line-height:1.6}
.ch-why{margin:0 0 12px;padding-left:18px;color:var(--txt-dim);line-height:1.8;font-size:13px}
.ch-table{overflow:auto;max-height:50vh}
.tt-mini{border-collapse:collapse;font:12.5px ui-monospace,Consolas,monospace;margin:0 auto}
.tt-mini th,.tt-mini td{padding:4px 10px;text-align:center;border-bottom:1px solid var(--line-soft)}
.tt-mini th{color:var(--txt-dim);font-weight:700}
.tt-mini .divider{border-left:1px solid var(--line)}
.tt-mini td.one{color:var(--hot);font-weight:700}
.tt-mini th.got{color:var(--accent)}
.tt-mini tr.bad td{background:rgba(255,90,90,.12)}
.ch-form{display:grid;gap:10px}
.ch-form label{display:grid;gap:5px;font-size:12px;color:var(--txt-dim)}
.ch-form .ch-inline{display:flex;align-items:center;gap:8px}
.ch-form fieldset{border:1px solid var(--line-soft);border-radius:8px;padding:8px 10px}
.ch-form legend{font-size:12px;color:var(--txt-dim);padding:0 4px}
.ch-fromcirc{display:flex;justify-content:flex-end;margin-top:-4px}
.ch-err{color:#ff9c9c;font-size:12.5px;min-height:1em;margin:8px 0 0}
@media (max-width:760px){
  #ch-bar{top:6px;left:6px;right:6px;padding:6px 8px}
  #ch-bar .ch-p{display:none}
  #ch-bar .ch-meta{flex-basis:100%;order:3}
}

/* ---------- 雲端、班級、作業 ---------- */
.cl-btn .av{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;
  background:var(--accent);color:#08111f;font-weight:800;font-size:11px;margin-right:6px}
.cl-btn.in{padding-left:6px}
.cl-btn .nm{max-width:90px;overflow:hidden;text-overflow:ellipsis;display:inline-block;vertical-align:bottom}
.cl-back{background:none;border:0;color:var(--accent);cursor:pointer;font-size:12.5px;padding:0 0 10px}
.cl-loading{color:var(--txt-faint);padding:20px 0;text-align:center}
.cl-list{margin:0 0 12px;padding-left:20px;line-height:1.8;color:var(--txt-dim);font-size:13px}
.cl-user{display:flex;align-items:center;gap:12px;padding:4px 0 14px}
.cl-user div{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}
.cl-user div span{font-size:12px;color:var(--txt-faint)}
.av.big{width:40px;height:40px;border-radius:50%;background:var(--accent);color:#08111f;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}
.cl-plan{padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700;color:var(--hot);border:1px solid rgba(255,194,71,.4)}
.cl-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:8px}
.cl-tile{display:flex;flex-direction:column;gap:4px;align-items:flex-start;text-align:left;cursor:pointer;
  padding:12px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line-soft);transition:.14s}
.cl-tile:hover{border-color:var(--accent)}
.cl-tile .ic{font-size:20px}
.cl-tile b{font-size:13.5px}
.cl-tile span{font-size:11.5px;color:var(--txt-dim);line-height:1.5}
.cl-form{display:grid;gap:10px;max-width:360px}
.cl-form label{display:grid;gap:5px;font-size:12px;color:var(--txt-dim)}
.cl-providers{display:grid;gap:6px;max-width:320px}
.cl-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0 0 10px;font-size:12.5px;color:var(--txt-dim)}
.cl-bar .dlg-input{flex:1;min-width:140px;font-size:13px}
.grow{flex:1}
.cl-h{margin:14px 0 6px;font-size:12px;color:var(--txt-faint);letter-spacing:.5px}
.cl-rows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.cl-rows li{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:8px 10px;border-radius:8px;
  background:var(--panel-2);border:1px solid var(--line-soft)}
.cl-rows li.cur{border-color:var(--accent)}
.cl-rows .dim,.dlg .dim{color:var(--txt-faint);font-size:12px}
.cl-rows code,.dlg-meta code{font:12px ui-monospace,Consolas,monospace;color:var(--hot);letter-spacing:1px}
.cl-score{font-weight:800;color:#ff9c9c}
.cl-score.ok{color:#5fd38d}
.cl-lock{font-size:11px;color:var(--hot);border:1px solid rgba(255,194,71,.35);border-radius:999px;padding:2px 8px}
.cl-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:8px;margin-bottom:10px}
.cl-stat{padding:10px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line-soft);display:flex;flex-direction:column;gap:2px}
.cl-stat b{font-size:20px;color:var(--txt)}
.cl-stat span{font-size:11.5px;color:var(--txt-faint)}
.cl-heat{border-collapse:separate;border-spacing:3px;font-size:12px}
.cl-heat th{font-weight:600;color:var(--txt-dim);padding:3px 6px;text-align:left;white-space:nowrap;max-width:120px;overflow:hidden;text-overflow:ellipsis}
.cl-heat td{min-width:44px;height:30px;text-align:center;border-radius:5px;background:#101725;color:var(--txt-faint);font-weight:700;position:relative}
.cl-heat td.p{background:rgba(95,211,141,.22);color:#8ff0b5}
.cl-heat td.m{background:rgba(255,194,71,.18);color:var(--hot)}
.cl-heat td.f{background:rgba(255,90,90,.18);color:#ff9c9c}
.cl-heat td i{position:absolute;top:-3px;right:-2px;font-size:9px;font-style:normal}
.cl-plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:8px}
.cl-pl{display:flex;flex-direction:column;gap:8px;padding:12px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line-soft)}
.cl-pl.cur{border-color:var(--hot)}
.cl-pl ul{margin:0;padding-left:16px;font-size:12px;color:var(--txt-dim);line-height:1.6;flex:1}
.cl-pay{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:12px;font-size:12.5px;color:var(--txt-dim)}
.cl-pay label{display:flex;align-items:center;gap:6px}
.cl-inv .dlg-input{width:150px;flex:none}
#ch-bar.asg{border-color:#2f5d8f}
.ch-tag{font-size:10.5px;font-weight:800;color:#08111f;background:var(--accent);border-radius:4px;padding:1px 6px}
.ch-score{font-size:46px;font-weight:800;color:var(--txt)}
.ch-score small{font-size:16px;color:var(--txt-faint);margin-left:2px}
.ch-result.ok .ch-score{color:#5fd38d}
@media (max-width:760px){ .cl-btn .nm{display:none} .cl-btn.in{padding:6px} .cl-btn .av{margin:0} }
body.embed #btn-account{display:none}

/* ---------- 匯流排與記憶體 ---------- */
.comp .stub.bus{stroke-width:4.5}
.comp .pin-w{fill:var(--accent);font-size:8.5px;font-weight:700;text-anchor:middle}
.comp .bus-val{fill:var(--hot);font:700 13px ui-monospace,Consolas,monospace;text-anchor:middle}
.comp .bus-val.big{font-size:15px}
.comp .bus-val.small{fill:var(--txt-faint);font-size:10px;font-weight:600}
.comp.BUS_IN{cursor:pointer}
.wire-g.bus .wire{stroke-width:5}
.wire-g.bus .wire-flow{stroke-width:5}
.wire-g .bus-label{fill:var(--txt-faint);font:700 9.5px ui-monospace,Consolas,monospace;text-anchor:middle;pointer-events:none}
.wire-g.bus.on .bus-label{fill:var(--hot)}
.tm-trace.bus{fill:none;stroke:var(--accent);stroke-width:1.6}
.tm-busv{fill:var(--txt);font:600 9.5px ui-monospace,Consolas,monospace}
.mem-grid{display:grid;grid-template-columns:repeat(var(--cols),minmax(0,1fr));gap:6px;margin-bottom:12px}
.mem-cell{display:flex;align-items:center;gap:6px;background:#0e1422;border:1px solid var(--line-soft);border-radius:6px;padding:3px 6px}
.mem-cell span{font:11px ui-monospace,Consolas,monospace;color:var(--txt-faint);min-width:1.4em}
.mem-cell input{width:100%;min-width:0;background:transparent;border:0;color:var(--hot);font:600 13px ui-monospace,Consolas,monospace;text-align:right}
.mem-cell input:focus{outline:none}
.mem-cell:focus-within{border-color:var(--accent)}
@media (max-width:640px){ .mem-grid{--cols:4 !important} }

/* ---------- 狀態機設計器 ---------- */
.fsm-io{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin-bottom:10px;font-size:12.5px;color:var(--txt-dim)}
.fsm-io label{display:flex;align-items:center;gap:6px}
.fsm-io .dlg-input{width:120px;flex:none;font-size:13px}
.fsm-io input[type=radio]{accent-color:var(--accent)}
.fsm-main{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:12px}
.fsm-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:6px}
.fsm-tools .btn.on{background:var(--accent);color:#08111f;border-color:var(--accent)}
.fsm-tools .dim{font-size:11.5px}
.fsm-svg{width:100%;height:auto;background:#0b111c;border:1px solid var(--line-soft);border-radius:10px;touch-action:none;user-select:none}
.fsm-st circle{fill:#16213a;stroke:var(--accent);stroke-width:2;cursor:grab}
.fsm-st.on circle{stroke:var(--hot);stroke-width:3}
.fsm-st.link circle{stroke:#5fd38d;stroke-dasharray:4 3}
.fsm-st text{fill:var(--txt);font-size:13px;font-weight:700;text-anchor:middle;pointer-events:none}
.fsm-st text.o{fill:var(--hot);font-size:10px}
.fsm-tr{fill:none;stroke:#7d8cb0;stroke-width:1.6}
.fsm-tr.init{stroke:var(--txt-dim)}
.fsm-arh{fill:#7d8cb0}
.fsm-lbl{fill:var(--txt-dim);font:11px ui-monospace,Consolas,monospace;text-anchor:middle;paint-order:stroke;stroke:#0b111c;stroke-width:3px}
.fsm-right{max-height:380px;overflow:auto}
.fsm-right h3{margin:4px 0 6px;font-size:12px;color:var(--txt-faint)}
.fsm-rows{list-style:none;margin:0 0 6px;padding:0;display:flex;flex-direction:column;gap:4px}
.fsm-rows li{display:flex;align-items:center;gap:6px;flex-wrap:wrap;background:var(--panel-2);border:1px solid var(--line-soft);border-radius:7px;padding:4px 6px}
.fsm-rows .dlg-input{flex:none;font-size:12.5px;padding:4px 6px}
.fsm-name{width:62px}
.fsm-cond{width:84px}
.fsm-rows .dlg-select{max-width:74px}
.fsm-rows .btn.ico{margin-left:auto;padding:3px 7px;font-size:11px}
.fsm-rows input[type=radio]{accent-color:var(--hot)}
.fsm-ob{display:flex;align-items:center;gap:3px;font-size:11.5px;color:var(--txt-dim)}
.fsm-ob input{accent-color:var(--hot)}
.fsm-prev{margin-top:12px;padding-top:10px;border-top:1px dashed var(--line);font-size:13px}
.fsm-enc{font-size:12px;color:var(--txt-dim);margin-bottom:6px;display:flex;flex-wrap:wrap;gap:4px 10px}
.fsm-code{font-family:ui-monospace,Consolas,monospace}
.fsm-code b{color:var(--txt)}
.fsm-err,.fsm-warn{margin:0 0 8px;padding-left:18px;font-size:12.5px;line-height:1.7}
.fsm-err{color:#ff9c9c}
.fsm-warn{color:var(--hot)}
@media (max-width:760px){ .fsm-main{grid-template-columns:1fr} .fsm-right{max-height:none} }
/* 四個步驟（features/fsm.js） */
.fsm-steps{display:flex;gap:6px;margin-bottom:10px;flex-wrap:wrap}
.fsm-step{display:flex;align-items:center;gap:7px;padding:6px 12px 6px 6px;border-radius:999px;cursor:pointer;
  background:var(--panel-2);border:1px solid var(--line);color:var(--txt-dim);font:600 12.5px system-ui,sans-serif}
.fsm-step span{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;
  background:#0f1522;border:1px solid var(--line);font-size:11px}
.fsm-step.on{border-color:var(--accent);color:var(--txt)}
.fsm-step.on span{background:var(--accent);border-color:var(--accent);color:#08111f}
.fsm-step.done span{background:#1f4a33;border-color:#5fd38d;color:#5fd38d}
.fsm-right h3{margin:10px 0 6px}
.fsm-right h3:first-child{margin-top:0}
.fsm-tpl{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.fsm-types{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.fsm-type{display:flex;flex-direction:column;gap:2px;padding:8px 10px;border-radius:8px;cursor:pointer;
  background:var(--panel-2);border:1px solid var(--line);font-size:12px;color:var(--txt-dim);line-height:1.5}
.fsm-type input{display:none}
.fsm-type b{font-size:13px;color:var(--txt)}
.fsm-type.on{border-color:var(--accent);background:rgba(78,161,255,.1)}
.fsm-field{display:flex;align-items:center;gap:8px;margin:6px 0;font-size:12.5px;color:var(--txt-dim)}
.fsm-field .dlg-input{flex:1;font-size:13px}
.fsm-rows li.on{border-color:var(--hot)}
.fsm-init{display:flex;align-items:center;gap:3px;font-size:11.5px;color:var(--txt-dim)}
.fsm-init input{accent-color:var(--hot)}
.fsm-chips{flex-basis:100%;display:flex;gap:4px;flex-wrap:wrap;padding-top:2px}
.fsm-chips button{padding:2px 9px;border-radius:6px;cursor:pointer;background:#0f1522;border:1px solid var(--line);
  color:var(--hot);font:12px ui-monospace,Consolas,monospace}
.fsm-chips button:hover{border-color:var(--hot)}
.fsm-now{margin:0 0 8px;padding:6px 10px;border-radius:7px;font-size:12.5px;background:var(--panel-2);color:var(--txt-dim);border:1px dashed var(--line)}
.fsm-now.on{border-color:#5fd38d;color:var(--txt)}
.fsm-hit{fill:none;stroke:transparent;stroke-width:14;cursor:pointer}
.fsm-tg.on .fsm-tr{stroke:var(--hot);stroke-width:2.4}
.fsm-tg.on .fsm-lbl{fill:var(--hot)}
.fsm-lbl.start{font-size:10px;fill:var(--txt-faint)}
.fsm-svg.linking .fsm-st circle{cursor:crosshair}
.fsm-svghint{margin:4px 2px 0}
.fsm-dlg .dlg-actions [hidden]{display:none}

.pro-tag{font-size:8.5px;font-weight:800;letter-spacing:.5px;color:#08111f;background:var(--hot);border-radius:3px;padding:1px 4px;margin-left:3px;vertical-align:1px}

/* ---------- 即時協作 ---------- */
#collab-bar{
  position:absolute;top:10px;right:10px;z-index:12;display:flex;align-items:center;gap:8px;
  padding:5px 6px 5px 10px;border-radius:10px;background:rgba(20,27,43,.95);border:1px solid #2f5d8f;font-size:12px;
}
#collab-bar .cb-t{color:var(--txt-dim);white-space:nowrap}
.cb-dot{width:8px;height:8px;border-radius:50%;background:var(--txt-faint)}
.cb-dot.online{background:#5fd38d;box-shadow:0 0 6px #5fd38d}
.cb-dot.connecting{background:var(--hot)}
.cb-avs{display:flex}
.cb-av{width:22px;height:22px;border-radius:50%;margin-left:-5px;border:2px solid #141b2b;
  background:var(--c);color:#08111f;font-weight:800;font-size:11px;display:flex;align-items:center;justify-content:center}
.cb-av:first-child{margin-left:0}
.peer-cursor{position:absolute;left:0;top:0;z-index:40;pointer-events:none;transition:transform .08s linear}
.peer-cursor svg path{fill:var(--c);stroke:#08111f;stroke-width:1}
.peer-cursor span{position:absolute;left:14px;top:14px;white-space:nowrap;font-size:11px;font-weight:700;
  color:#08111f;background:var(--c);border-radius:4px;padding:1px 5px}
body.in-challenge #collab-bar{top:64px}
@media (max-width:760px){ #collab-bar .cb-t{display:none} }

/* ---------- 品牌：Norro（NOR 閘，兩個輸入都是 0 時輸出的小圓圈亮起） ---------- */
.brand{display:flex;align-items:center;gap:7px;color:inherit;text-decoration:none;border-radius:8px}
a.brand[href]:hover .brand-logo .gate{fill:rgba(255,194,71,.32)}
a.brand[href]:hover b{color:var(--hot)}
.brand b{font-size:15px;letter-spacing:1px}
.brand-logo{width:30px;height:22px;flex:none;overflow:visible}
.brand-logo .pin{fill:none;stroke:var(--hot);stroke-width:1.8;stroke-linecap:round}
.brand-logo .gate{fill:rgba(255,194,71,.18);stroke:var(--hot);stroke-width:2.2;stroke-linejoin:round;
  filter:drop-shadow(0 0 3px rgba(255,194,71,.6))}
.brand-logo .led{fill:#ffe3a1;filter:drop-shadow(0 0 3px #ffc247) drop-shadow(0 0 7px rgba(255,170,40,.8))}
#embed-open .brand-logo{width:21px;height:17px}

/* ---------- 聚光燈導覽 ---------- */
#guide{position:fixed;inset:0;z-index:1000;opacity:0;pointer-events:none;transition:opacity .2s}
#guide.show{opacity:1;pointer-events:auto}
#guide .g-block{position:absolute;inset:0}                       /* 導覽中擋住其他點擊 */
#guide .g-hole{
  position:absolute;border-radius:12px;pointer-events:none;
  box-shadow:0 0 0 200vmax rgba(3,6,12,.76), 0 0 0 2px var(--accent), 0 0 26px 6px rgba(78,161,255,.45);
  transition:left .3s cubic-bezier(.2,.8,.2,1), top .3s cubic-bezier(.2,.8,.2,1),
             width .3s cubic-bezier(.2,.8,.2,1), height .3s cubic-bezier(.2,.8,.2,1);
}
:is(#guide,#coach) .g-card,#coach .c-card{
  position:absolute;width:min(330px,calc(100vw - 16px));
  background:var(--panel);border:1px solid #35456b;border-radius:14px;padding:13px 16px 14px;
  box-shadow:0 18px 50px rgba(0,0,0,.6);transition:left .3s, top .3s;
}
:is(#guide,#coach) .g-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
:is(#guide,#coach) .g-count{font:800 11px ui-monospace,Consolas,monospace;letter-spacing:1px;color:var(--accent)}
:is(#guide,#coach) .g-skip{background:none;border:0;padding:4px 2px;color:var(--txt-faint);font-size:12px;cursor:pointer}
:is(#guide,#coach) .g-skip:hover{color:var(--txt)}
:is(#guide,#coach) .g-title{margin:0 0 6px;font-size:15.5px;color:var(--txt)}
:is(#guide,#coach) .g-text{margin:0;font-size:13px;line-height:1.7;color:var(--txt-dim)}
:is(#guide,#coach) .g-text b{color:var(--txt)}
/* ---------- 說明卡的示意圖（features/guide-art.js） ---------- */
.g-art{display:flex;justify-content:center;gap:8px;margin:2px 0 10px}
.g-art:not(.two) figure{flex:0 1 230px}
/* 有兩張圖的說明卡加寬一點，圖才不會太小 */
:is(#guide,#coach) .g-card:has(.g-art.two){width:min(410px,calc(100vw - 16px))}
.g-art figure{flex:1;min-width:0;margin:0;padding:6px 6px 5px;border-radius:9px;background:#0f1522;border:1px solid var(--line-soft)}
.g-art svg{display:block;width:100%;height:auto;aspect-ratio:160/100}
.g-art figcaption{margin-top:3px;font-size:11px;line-height:1.4;color:var(--txt-dim);text-align:center}
.g-art.two figcaption{font-size:10.5px}
.ga-t{fill:var(--txt);font-family:system-ui,-apple-system,"Segoe UI","Microsoft JhengHei",sans-serif;font-weight:600}
.ga-t.ga-dim{fill:var(--txt-faint);font-weight:500}.ga-t.ga-b{fill:var(--txt)}.ga-t.ga-hot{fill:var(--hot)}.ga-t.ga-acc{fill:var(--accent)}
.ga-t.ga-warn-t{fill:#ff8a7a}
.ga-box{fill:#1a2334;stroke:#6f86b8;stroke-width:1.4}
.ga-box.ga-mini{stroke-width:1.1}
.ga-sel{stroke:var(--hot)}
.ga-panel{fill:#141b2b;stroke:var(--line);stroke-width:1}
.ga-canvas{fill:#0b0f17;stroke:var(--line);stroke-width:1}
.ga-w{fill:none;stroke:#5d6b8a;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ga-w.on{stroke:var(--hot);filter:drop-shadow(0 0 2px rgba(255,194,71,.7))}
.ga-dash{stroke-dasharray:4 3}
.ga-bus{fill:none;stroke:#8fc4ff;stroke-width:4;stroke-linecap:round}
.ga-on{fill:var(--hot)}.ga-glow{filter:drop-shadow(0 0 4px rgba(255,194,71,.9))}
.ga-off{fill:#2a3550}
.ga-pin{fill:#1a2334;stroke:#8fa3cc;stroke-width:1.2}.ga-pin.on{fill:var(--hot);stroke:var(--hot)}.ga-pin.hot{stroke:var(--hot);stroke-width:2}
.ga-cur{fill:#fff;stroke:#0b0f17;stroke-width:1}
.ga-arrow{fill:none;stroke:var(--accent);stroke-width:1.8}.ga-ah{fill:var(--accent)}
.ga-grid{fill:none;stroke:var(--line);stroke-width:1}
.ga-row{fill:rgba(255,194,71,.16);stroke:rgba(255,194,71,.6);stroke-width:1}
.ga-tab{fill:#1a2334;stroke:var(--line);stroke-width:1}.ga-tab.on{fill:rgba(78,161,255,.22);stroke:var(--accent)}
.ga-selbox{fill:none;stroke:var(--accent);stroke-width:1.2;stroke-dasharray:3 2}
.ga-handle{fill:var(--accent);stroke:#0b0f17;stroke-width:1}
.ga-now{stroke:var(--hot);stroke-width:1.6;stroke-dasharray:3 2}
.ga-nowmark{fill:var(--hot)}
.ga-cell{fill:#141b2b;stroke:var(--line);stroke-width:1}
.ga-cell.ga-oncell{fill:rgba(255,194,71,.12);stroke:rgba(255,194,71,.6)}
.ga-bar{stroke:var(--hot);stroke-width:1.4;fill:none}
.ga-loop{fill:none;stroke-width:2}.ga-loop.a{stroke:var(--hot)}.ga-loop.b{stroke:#5fd38d}.ga-loop.c{stroke:#4ea1ff}
.ga-input{fill:#0b0f17;stroke:var(--accent);stroke-width:1.2}
.ga-warn{fill:rgba(255,107,107,.12);stroke:#ff8a7a;stroke-width:1.4;stroke-dasharray:3 2}
.ga-blink{animation:ga-blink 1s steps(1) infinite}
@keyframes ga-blink{50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.ga-blink{animation:none}}
:is(#guide,#coach) .g-text code{font:12px ui-monospace,Consolas,monospace;color:var(--hot)}
:is(#guide,#coach) .g-nav{display:flex;justify-content:flex-end;gap:8px;margin-top:12px}
:is(#guide,#coach) .g-prev,:is(#guide,#coach) .g-next{
  width:42px;height:42px;border-radius:10px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font:700 24px/1 system-ui,sans-serif;transition:.14s;
}
:is(#guide,#coach) .g-prev{background:var(--panel-2);border:1px solid var(--line);color:var(--txt)}
:is(#guide,#coach) .g-prev:hover:not(:disabled){border-color:var(--accent)}
:is(#guide,#coach) .g-prev:disabled{opacity:.28;cursor:default}
:is(#guide,#coach) .g-next{background:var(--accent);border:1px solid var(--accent);color:#08111f}
:is(#guide,#coach) .g-next:hover{background:#6db3ff}
:is(#guide,#coach) .g-next.done{background:var(--hot);border-color:var(--hot);color:#2a1c02;font-size:19px}
/* 要動手的步驟做到了才出現 ›；最後一步是「回到課程」＋「下一課 ›」 */
:is(#guide,#coach) .g-nav [hidden]{display:none}
#coach .g-next.wide{width:auto;padding:0 14px;font-size:14px}
#coach .g-map{margin-right:auto;height:42px;padding:0 12px;border-radius:10px;cursor:pointer;
  background:none;border:1px solid var(--line);color:var(--txt-dim);font:600 13px system-ui,sans-serif}
#coach .g-map:hover{border-color:var(--accent);color:var(--txt)}
#coach .c-card.ok .g-next:not(.done){animation:coach-next 1s ease-in-out infinite}
@keyframes coach-next{50%{box-shadow:0 0 0 5px rgba(78,161,255,.3)}}
/* 說明卡上有兩張圖時加寬 */
#coach .c-card:has(.g-art.two){width:min(410px,calc(100vw - 16px))}


/* ---------- 帶新手做第一個電路（features/lesson.js）：不變暗、不擋操作 ---------- */
#coach{position:fixed;inset:0;z-index:900;pointer-events:none}
#coach-ring{position:fixed;z-index:980;pointer-events:none;border-radius:12px;display:none;
  box-shadow:0 0 0 2px var(--hot), 0 0 22px 4px rgba(255,194,71,.45);
  animation:coach-pulse 1.6s ease-in-out infinite;transition:left .25s, top .25s, width .25s, height .25s}
@keyframes coach-pulse{50%{box-shadow:0 0 0 2px var(--hot), 0 0 34px 10px rgba(255,194,71,.28)}}
#coach .c-card{pointer-events:auto;position:fixed;border-color:rgba(255,194,71,.45)}
#coach .c-card.ok{border-color:#5fd38d;box-shadow:0 0 0 2px rgba(95,211,141,.5), 0 18px 50px rgba(0,0,0,.6)}
#coach .c-card.ok .g-title::after{content:' ✓';color:#5fd38d}
/* 看板娘諾拉的頭像：探出說明卡的左上角 */
#coach .c-card{padding-left:52px}
#coach .c-nora{position:absolute;left:-26px;top:-24px;width:68px;height:68px;border-radius:50%;overflow:hidden;
  background:radial-gradient(circle at 50% 35%, #2a3960, #151d2e 72%);border:2px solid rgba(255,194,71,.7);
  box-shadow:0 6px 18px rgba(0,0,0,.5)}
#coach .c-card.ok .c-nora{border-color:#5fd38d}

/* ---------- 模擬器裡的諾拉（features/nora-app.js）：畫布左下角，腰以下切在畫布底部 ---------- */
#nora-app{position:absolute;left:14px;bottom:0;width:118px;z-index:11;cursor:pointer;
  -webkit-tap-highlight-color:transparent;filter:drop-shadow(0 4px 10px rgba(0,0,0,.35))}
#nora-app[hidden]{display:none}
/* 操作列和諾拉放不下時的排法（features/nora-app.js 的 placeBar） */
#mode-bar{z-index:12}
#stage.mb-compact #mode-bar .lb{display:none}
#stage.mb-right #mode-bar{left:auto;right:14px;transform:none}
#nora-app.squeezed{visibility:hidden;pointer-events:none}
/* 對話框（nora/nora.js 內建的 .nora-bubble）：顏色配合模擬器，放在她頭的右邊 */
#nora-app{--nora-bubble-bg:var(--panel);--nora-bubble-fg:var(--txt);--nora-bubble-accent:var(--hot);--nora-bubble-max:250px;
  --nora-bubble-font:13px/1.6 system-ui,-apple-system,"Segoe UI","Microsoft JhengHei",sans-serif}
#nora-app .nora-bubble{left:84%;top:auto;bottom:64%;padding:9px 13px;box-shadow:0 10px 30px rgba(0,0,0,.45)}
#nora-app .nora-bubble::after{top:auto;bottom:14px}
@media (max-width:760px){ #nora-app{display:none} }

/* ---------- 使用說明 ---------- */
.hp-sec{border:1px solid var(--line-soft);border-radius:10px;margin-bottom:8px;background:var(--panel-2)}
.hp-sec summary{cursor:pointer;padding:10px 12px;font-weight:700;font-size:13.5px;list-style:none;display:flex;align-items:center;gap:8px}
.hp-sec summary::-webkit-details-marker{display:none}
.hp-sec summary::before{content:'▸';color:var(--txt-faint);transition:transform .15s;display:inline-block}
.hp-sec[open] summary::before{transform:rotate(90deg)}
.hp-sec ul{margin:0;padding:0 14px 12px 30px;line-height:1.85;font-size:13px;color:var(--txt-dim)}
.hp-sec li b{color:var(--txt)}
.hp-sec code{font:12px ui-monospace,Consolas,monospace;color:var(--hot)}
.hp-keys{margin:0 14px 12px;border-collapse:collapse;font-size:13px;color:var(--txt-dim)}
.hp-keys td{padding:4px 14px 4px 0;vertical-align:top}
kbd{display:inline-block;min-width:20px;padding:1px 6px;border-radius:5px;text-align:center;
  font:600 11.5px ui-monospace,Consolas,monospace;color:var(--txt);
  background:#0e1422;border:1px solid var(--line);border-bottom-width:2px}

/* 畫布變窄時（視窗小、或兩側面板拉寬）：播放列改靠左、再窄就只留圖示，
   才不會蓋到右下角的縮放鈕。用容器查詢，看的是畫布本身的寬度而不是視窗 */
#stage{container-type:inline-size}
@container (max-width:760px){ #mode-bar{left:12px;transform:none} }
@container (max-width:600px){ #mode-bar .lb{display:none} }
@container (max-width:480px){ #zoom-ctl{bottom:64px;flex-direction:column} #zoom-val{display:none} }

/* 自製 SVG 圖示（src/ui/icons.js）：大小跟著字級，顏色跟著文字 */
.svg-ic{width:1.25em;height:1.25em;flex:none;vertical-align:-.25em;
  fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.svg-ic .fill{fill:currentColor;stroke:none}

/* ---------- 元件說明（features/partinfo.js）：左邊元件清單、右邊說明 ---------- */
.pi{display:grid;grid-template-columns:168px minmax(0,1fr);gap:20px}
.pi-nav,.pi-doc{max-height:min(64vh,580px);overflow-y:auto}
.pi-nav{display:flex;flex-direction:column;gap:1px;padding-right:8px;border-right:1px solid var(--line)}
.pi-g{font-size:11px;color:var(--txt-faint);letter-spacing:.5px;margin:12px 0 4px 10px}
.pi-g:first-child{margin-top:2px}
.pi-it{text-align:left;background:none;border:0;color:var(--txt-dim);font:inherit;font-size:13px;
  padding:6px 10px;border-radius:6px;cursor:pointer}
.pi-it:hover{background:#1f2940;color:var(--txt)}
.pi-it.on{background:rgba(77,163,255,.16);color:var(--accent);font-weight:600}
.pi-doc{padding-right:6px}
.pi-hd{display:flex;align-items:center;gap:16px;margin-bottom:12px}
.pi-sym{width:136px;height:100px;flex:none;display:grid;place-items:center;
  background:#0e1422;border:1px solid var(--line);border-radius:10px}
.pi-sym .gsvg{max-width:116px;max-height:82px;width:auto;height:auto}
.pi-hd h3{margin:0 0 6px;font-size:18px}
.pi-grp{font-size:11.5px;color:var(--txt-faint);border:1px solid var(--line);border-radius:10px;padding:1px 8px}
.pi-doc p{margin:0;line-height:1.7;color:var(--txt-dim);font-size:13px}
.pi-doc .pi-what{font-size:14.5px;color:var(--txt)}
.pi-doc h4{font-size:12px;color:var(--txt-faint);letter-spacing:.5px;margin:18px 0 6px}
.pi-tt-wrap{overflow-x:auto}
.pi-tt{border-collapse:collapse;font-size:12.5px;font-variant-numeric:tabular-nums}
.pi-tt th,.pi-tt td{padding:4px 14px;text-align:center;border-bottom:1px solid var(--line);white-space:nowrap}
.pi-tt th{color:var(--txt-faint);font-weight:600}
.pi-tt .o{background:rgba(255,194,71,.05);color:var(--txt)}
.pi-tt td.one{color:var(--hot);font-weight:700}
.pi-doc .pi-note{font-size:12px;margin-top:6px}
.pi-oops{margin-top:18px;border:1px solid #6b3f22;background:rgba(255,150,60,.07);border-radius:8px;padding:10px 12px}
.pi-oops b{color:#ffb86b;font-size:12.5px}
.pi-doc .pi-oops p{margin-top:4px}
.ov{text-decoration:overline}
@media (max-width:760px){
  .pi{grid-template-columns:minmax(0,1fr);gap:12px}
  .pi-nav{flex-direction:row;overflow-x:auto;max-height:none;border-right:0;border-bottom:1px solid var(--line);
    padding:0 0 8px;scrollbar-width:none}
  .pi-g{display:none}
  .pi-it{flex:none;white-space:nowrap;padding:8px 12px}
  .pi-doc{max-height:none}
}

/* ---------- 元件縮圖（DL.paletteIcon）：和畫布上的元件同一套外框樣式 ---------- */
.comp.comp-ic{position:static;display:inline-flex;flex:none}
.comp-ic,.comp-ic *{pointer-events:none !important}
.pal-item:hover .comp-ic .body,.pal-item:hover .comp-ic .bubble,
#swapmenu .grid button:hover .comp-ic .body{stroke:#8598c2}
/* 小縮圖（側邊欄、換類型選單、範例庫）：線條不隨縮小變細、縮小後看不清的字和接點就不畫 */
:is(.pal-item,#swapmenu,.ex-ic) .comp-ic *{vector-effect:non-scaling-stroke}
:is(.pal-item,#swapmenu,.ex-ic) .comp-ic :is(.body,.bubble,.body-line){stroke:#7f93bd;stroke-width:1.5}
:is(.pal-item,#swapmenu,.ex-ic) .comp-ic .stub{stroke-width:1.5}
:is(.pal-item,#swapmenu,.ex-ic) .comp-ic :is(.glabel,.box-title,.pin-label,.pin-bar,.dot){display:none}

/* ---------- 卡諾圖：化簡方式切換（每種標出需要幾個閘） ---------- */
.km-forms{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;margin:0 0 12px;
  background:#0e1422;border:1px solid var(--line);border-radius:9px;padding:3px}
.km-forms button{display:flex;flex-direction:column;align-items:center;gap:1px;padding:6px 4px;
  border:0;border-radius:6px;background:none;color:var(--txt-dim);font:inherit;font-size:12px;cursor:pointer}
.km-forms button small{font-size:10.5px;color:var(--txt-faint)}
.km-forms button:hover{background:#1f2940;color:var(--txt)}
.km-forms button.on{background:var(--accent);color:#08111f;font-weight:700}
.km-forms button.on small{color:#08111f;opacity:.75}
.km-note{margin:8px 0 0;font-size:12px;line-height:1.6;color:var(--txt-faint)}
/* 反相的上劃線：所有排版過的布林式都要有（卡諾圖的圈清單、預覽…） */
.ovl{text-decoration:overline;text-decoration-thickness:1px}
/* 多輸出共用：開關＋合計閘數；共用的項加個小標籤 */
.km-share{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 10px;
  margin:-4px 0 12px;font-size:12px;color:var(--txt-dim)}
.km-share label{display:flex;align-items:center;gap:6px;cursor:pointer}
.km-share input{accent-color:var(--accent)}
.km-share span{font-size:11.5px;color:var(--txt-faint)}
.km-share span.good{color:#5fd38d}
.km-tag{font-size:10.5px;color:#5fd38d;border:1px solid rgba(95,211,141,.4);border-radius:8px;padding:0 6px;margin-left:6px;white-space:nowrap}

/* ---------- 頂列：logo（左）｜選單（正中間）｜分享與語言（右） ---------- */
#topbar{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:16px}
.brand{justify-self:start}
.menubar,.act-end{display:flex;align-items:center;gap:8px}
.act-end{justify-self:end;gap:10px}
.menubar > *,.act-end > *{flex:none}
.menu-btn .caret{display:inline-block;margin-left:6px;vertical-align:middle;opacity:.6;
  border:4px solid transparent;border-top-color:currentColor;border-bottom:0}
.menu-btn.open{background:#26314a;border-color:var(--accent);color:var(--txt)}
/* 下拉選單裡目前選中的項目（例如走線樣式）前面打勾 */
#ctxmenu button.on{color:var(--accent)}
/* 窄一點：選單只留圖示（滑鼠停留會顯示名稱） */
@media (max-width:980px){
  .menubar .lb,.act-end .lb,.brand b{display:none}
  .menubar .bi,.act-end .bi{margin-right:0}
}
/* 手機：按鈕只留圖示、不畫下拉箭頭，語言只留「切換到另一種」那一顆；還是放不下就可以左右滑動 */
@media (max-width:760px){
  #topbar{display:flex;gap:6px}
  #topbar .btn{padding:7px 8px}
  .menubar{flex:1;min-width:0;overflow-x:auto;scrollbar-width:none;padding:4px 0}
  .menubar::-webkit-scrollbar{display:none}
  .menubar,.act-end{gap:5px}
  .menu-btn .caret{display:none}
  #lang-sw .btn.on{display:none}
  #lang-sw .btn{border-radius:7px}
}

/* ---------- 教學文章、版本資訊（features/learn.js） ---------- */
.ar-body{font-size:13.5px;line-height:1.8;color:var(--txt-dim)}
.ar-body p{margin:0 0 12px}
.ar-body ol{margin:0 0 12px;padding-left:22px}
.ar-body li{margin:4px 0}
.ar-body b{color:var(--txt)}
.about-hd{font-size:20px;margin:2px 0 8px}
.about-v{font-size:13px;color:var(--accent);font-weight:600}
.about-log h4{margin:14px 0 4px;font-size:13px}
.about-log h4 .dim{font-weight:400;margin-left:6px}
.about-log ul{margin:0;padding-left:20px;font-size:12.5px;line-height:1.7;color:var(--txt-dim)}
.about-log details{margin-top:12px}
.about-log summary{cursor:pointer;font-size:12.5px;color:var(--txt-faint)}
.dlg-meta a{color:var(--accent)}

/* ---------- 自訂組合（features/combos.js）：側邊欄縮圖是方塊＋線 ---------- */
.combo-thumb{width:52px;height:32px;flex:none;overflow:visible}
.combo-thumb rect{fill:#1e2942;stroke:#7f93bd;stroke-width:1.5;vector-effect:non-scaling-stroke}
.combo-thumb .cw line{stroke:#5f7099;stroke-width:1.2;vector-effect:non-scaling-stroke}
.pal-item:hover .combo-thumb rect{stroke:#9fb0d4}
.pal-combo .nm small{display:block;font-size:10.5px;font-weight:500;color:var(--txt-faint);margin-top:1px}
#drag-ghost .combo-thumb{width:120px;height:78px}
@media (max-width:1280px){ .combo-thumb{width:44px;height:28px} }

/* 教學的示範動畫：淡淡的元件圖示／發光小點＋游標，位置由 lesson.js 的動畫控制 */
#coach-ghost{position:fixed;z-index:975;left:0;top:0;display:none;pointer-events:none;will-change:transform,opacity}
#coach-ghost .c-icon{position:absolute;left:0;top:0;transform:translate(-50%,-50%);filter:drop-shadow(0 0 8px rgba(255,194,71,.55))}
#coach-ghost .c-icon .gsvg{width:58px;height:36px}                 /* 實際大小由 lesson.js 依畫布縮放設定 */
#coach-ghost.wire .c-icon{width:12px;height:12px;border-radius:50%;background:var(--hot);
  box-shadow:0 0 0 4px rgba(255,194,71,.25), 0 0 14px 4px rgba(255,194,71,.7)}
#coach-ghost .c-hand{position:absolute;left:4px;top:2px;width:22px;height:22px;color:#fff;
  filter:drop-shadow(0 1px 3px rgba(0,0,0,.8))}
#coach-ghost .c-hand .svg-ic{width:22px;height:22px;stroke:#0b0f17;stroke-width:1.4}
#coach-ghost .c-hand .svg-ic .fill{fill:#fff}
#coach-ghost:is(.tap,.tap2) .c-hand{left:-4px;top:-2px}
#coach-ghost:is(.tap,.tap2)::before{content:'';position:absolute;left:-18px;top:-18px;width:36px;height:36px;border-radius:50%;
  border:2px solid rgba(255,194,71,.7)}

/* ---------- 學習：課程地圖（features/course.js） ---------- */
.lm-hd{display:flex;align-items:center;gap:14px;margin:2px 0 6px;padding:12px 14px;border-radius:12px;
  background:linear-gradient(135deg,rgba(78,161,255,.12),rgba(255,194,71,.08));border:1px solid var(--line-soft)}
.lm-nora{flex:none;width:64px;height:64px;border-radius:50%;overflow:hidden;
  background:radial-gradient(circle at 50% 35%, #2a3960, #151d2e 72%);border:2px solid rgba(255,194,71,.7)}
.lm-hi{flex:1;min-width:0}
.lm-hi p{margin:0 0 8px;font-size:13.5px;line-height:1.6;color:var(--txt)}
.lm-bar{height:6px;border-radius:3px;background:var(--panel-2);overflow:hidden}
.lm-bar i{display:block;height:100%;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--hot))}
.lm-prog{display:block;margin-top:4px;font-size:11.5px;color:var(--txt-faint)}
.lm-ch h3{display:flex;align-items:center;gap:8px;margin:16px 0 8px;font-size:13px;color:var(--txt)}
.lm-chn{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:6px;
  background:var(--panel-2);border:1px solid var(--line);font:700 11px ui-monospace,Consolas,monospace;color:var(--accent)}
.lm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}
.lm-card{position:relative;display:flex;align-items:flex-start;gap:10px;padding:10px 12px;text-align:left;cursor:pointer;
  border-radius:10px;border:1px solid var(--line);background:var(--panel-2);color:var(--txt);font:inherit;
  transition:border-color .14s, background .14s, transform .14s}
.lm-card:hover{border-color:var(--accent);background:#1d2942;transform:translateY(-1px)}
.lm-card:active{transform:none}
.lm-no{flex:none;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;
  background:#0f1522;border:1px solid var(--line);font:700 12px ui-monospace,Consolas,monospace;color:var(--txt-dim)}
.lm-tx{display:flex;flex-direction:column;gap:2px;min-width:0}
.lm-tx b{font-size:13.5px}
.lm-tx span{font-size:12px;line-height:1.5;color:var(--txt-dim)}
.lm-card.done .lm-no{background:#1f4a33;border-color:#5fd38d;color:#5fd38d}
.lm-card.next{border-color:var(--hot);box-shadow:0 0 0 1px var(--hot), 0 0 18px rgba(255,194,71,.18)}
.lm-card.next .lm-no{background:var(--hot);border-color:var(--hot);color:#2a1c02}
.lm-tag{position:absolute;top:-8px;right:10px;padding:1px 8px;border-radius:9px;background:var(--hot);color:#2a1c02;
  font-size:10.5px;font-weight:700}
@media (max-width:640px){ .lm-grid{grid-template-columns:1fr} .lm-hd{padding:10px} .lm-nora{width:52px;height:52px} }
#btn-learn .bi{color:var(--hot)}

/* ---------- 元件圖鑑的用法示意（ui/mini.js、features/partdemo.js） ---------- */
.pi-demo{margin:0;padding:10px;border-radius:10px;border:1px solid var(--line-soft);
  background:#0b0f17 radial-gradient(circle, #1a2236 1px, transparent 1.2px) 0 0/16px 16px}
.mini svg{display:block;width:100%;height:auto;max-height:280px;overflow:visible}
.mini, .mini *{pointer-events:none !important}
.lm-note{margin:-4px 0 8px;font-size:12px;color:var(--txt-dim)}

/* 說明卡裡的元件用法示意（'demo:<元件>'）：真的小電路，不要套 160×100 的比例 */
.g-art .mini svg{aspect-ratio:auto;max-height:150px}
.g-art figure:has(.mini){flex:1 1 100%}

/* ---------- 連線協作（features/room.js） ---------- */
#collab-bar .cb-code{background:none;border:0;padding:2px 4px;cursor:pointer;color:var(--txt-dim);font:600 12px system-ui,sans-serif;white-space:nowrap}
#collab-bar .cb-code:hover{color:var(--txt)}
#collab-bar .cb-chat{position:relative}
#collab-bar .cb-chat i{position:absolute;top:-6px;right:-6px;min-width:16px;height:16px;padding:0 4px;border-radius:8px;
  background:#ff7a90;color:#fff;font:700 10px/16px system-ui,sans-serif;font-style:normal}
#collab-bar .btn.ico .svg-ic{width:15px;height:15px}
.room-cols{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.room-cols section{padding:12px;border-radius:10px;background:var(--panel-2);border:1px solid var(--line-soft)}
.room-cols h4{display:flex;align-items:center;gap:6px;margin:0 0 4px;font-size:13.5px}
.room-cols h4 .svg-ic{width:16px;height:16px;color:var(--accent)}
.room-cols p{margin:0 0 10px;font-size:12.5px;line-height:1.6;color:var(--txt-dim)}
.room-code{text-transform:uppercase;letter-spacing:2px;font-family:ui-monospace,Consolas,monospace}
.room-status{min-height:1.2em;margin:8px 0 0;font-size:12.5px;color:#ff9c9c}
.room-code-big{margin:6px 0 10px;text-align:center;font:800 34px/1.2 ui-monospace,Consolas,monospace;letter-spacing:8px;color:var(--hot)}
.room-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;font-size:13px}
.room-list li{display:flex;align-items:center;gap:8px}
.room-list .cb-av{margin:0}
.room-tag{font-size:10.5px;font-weight:700;color:#08111f;background:var(--hot);border-radius:4px;padding:1px 6px}
.btn.danger{border-color:#7a3340;color:#ffb3b3}
.btn.danger:hover{background:#5c2330}
#room-chat{position:absolute;right:10px;top:56px;z-index:13;width:min(300px,calc(100% - 20px));height:min(380px,calc(100% - 140px));
  display:flex;flex-direction:column;border-radius:12px;background:rgba(20,27,43,.97);border:1px solid #2f5d8f;box-shadow:0 14px 40px rgba(0,0,0,.5)}
#room-chat[hidden]{display:none}
.rc-hd{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 8px 12px;border-bottom:1px solid var(--line-soft);font-size:13px}
.rc-list{flex:1;overflow:auto;list-style:none;margin:0;padding:8px 10px;display:flex;flex-direction:column;gap:6px;font-size:12.5px;line-height:1.5}
.rc-list li{display:flex;flex-direction:column}
.rc-list li.me{align-items:flex-end}
.rc-name{font-size:11px;font-weight:700}
.rc-text{max-width:90%;padding:5px 9px;border-radius:9px;background:var(--panel-2);color:var(--txt);word-break:break-word}
.rc-list li.me .rc-text{background:#1d3a63}
.rc-form{display:flex;gap:6px;padding:8px;border-top:1px solid var(--line-soft)}
.rc-form .dlg-input{flex:1;font-size:13px}
.rc-form .svg-ic{width:15px;height:15px}
@media (max-width:640px){ .room-cols{grid-template-columns:1fr} }

/* ---------- 回報問題、支持我、關於作者（features/support.js） ---------- */
.rp-kinds{display:flex;gap:14px;flex-wrap:wrap;margin:6px 0 4px;font-size:13px}
.rp-kinds input,.rp-attach input{accent-color:var(--accent)}
.rp-msg{width:100%;resize:vertical;min-height:110px;font:13px/1.6 system-ui,sans-serif}
.rp-attach{display:flex;align-items:center;gap:6px;margin-top:10px;font-size:12.5px;color:var(--txt-dim)}
.rp-status{min-height:1.2em;margin:8px 0 0;font-size:12.5px;color:var(--txt-dim)}
.sp-hd{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.sp-hd .svg-ic{flex:none;width:34px;height:34px;color:#ff7a90}
.sp-hd p{margin:0;font-size:14px;line-height:1.6;color:var(--txt)}
.sp-links{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.sp-soon{margin:10px 0;padding:10px 12px;border-radius:8px;background:var(--panel-2);font-size:13px;color:var(--txt-dim)}
.sp-h{margin:14px 0 6px;font-size:12px;color:var(--txt-faint)}
.sp-list{margin:0;padding-left:18px;font-size:13px;line-height:1.8;color:var(--txt-dim)}
.linkbtn{background:none;border:0;padding:0;color:var(--accent);font:inherit;cursor:pointer;text-decoration:underline}
.au-hd{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.au-av{flex:none;width:64px;height:64px;border-radius:14px;object-fit:cover;border:1px solid var(--line);box-shadow:0 6px 18px rgba(0,0,0,.35)}
.au-hd + p,.dlg-bd .au-hd ~ p{margin:0 0 10px}
.au-name{display:block;font-size:17px}
.au-role{font-size:12.5px;color:var(--txt-dim)}
.dlg-bd p{line-height:1.75}

/* ---------- 導覽看完：有沒有基礎（features/course.js 的 ask） ---------- */
.ask-opts{display:flex;flex-direction:column;gap:8px;margin-top:10px}
.ask-opt{display:flex;flex-direction:column;gap:3px;text-align:left;padding:12px 14px;border-radius:10px;cursor:pointer;
  background:var(--panel-2);border:1px solid var(--line);color:var(--txt);font:inherit;transition:border-color .14s, background .14s}
.ask-opt:hover{border-color:var(--accent);background:#1d2942}
.ask-opt b{font-size:14px}
.ask-opt span{font-size:12.5px;color:var(--txt-dim)}
.fsm-dlg .dlg-actions{position:sticky;bottom:-16px;z-index:2;margin:12px -4px -4px;padding:10px 4px;background:var(--panel);border-top:1px solid var(--line-soft)}

/* 頂列的「協作」：連線中亮綠色 */
#btn-room.on{border-color:#2f7d55;background:rgba(95,211,141,.12);color:#c9f5dc}
#btn-room.on .bi{color:#5fd38d}
.au-hd ~ p a{color:var(--accent);font-weight:600;text-underline-offset:3px}

.fsm-note{margin:8px 0 0;font-size:12px;line-height:1.6;color:var(--txt-faint)}

/* ---------- 問諾拉（features/ai.js）：畫布左下、諾拉旁邊 ---------- */
#ai-panel{position:absolute;left:150px;bottom:64px;z-index:14;width:min(360px,calc(100% - 170px));height:min(470px,calc(100% - 90px));
  display:flex;flex-direction:column;border-radius:14px;background:rgba(20,27,43,.98);border:1px solid rgba(255,194,71,.45);
  box-shadow:0 16px 44px rgba(0,0,0,.55)}
#ai-panel[hidden]{display:none}
.ai-hd{display:flex;align-items:center;gap:8px;padding:8px 8px 8px 10px;border-bottom:1px solid var(--line-soft);font-size:14px}
.ai-hd .btn{margin-left:auto}
.ai-av{flex:none;width:34px;height:34px;border-radius:50%;overflow:hidden;border:2px solid rgba(255,194,71,.7);
  background:radial-gradient(circle at 50% 35%, #2a3960, #151d2e 72%)}
.ai-tag{font:800 9.5px system-ui,sans-serif;letter-spacing:.6px;color:#08111f;background:var(--hot);border-radius:4px;padding:1px 5px}
.ai-list{flex:1;overflow:auto;list-style:none;margin:0;padding:10px;display:flex;flex-direction:column;gap:8px}
.ai-list li{display:flex;flex-direction:column;max-width:92%}
.ai-list li.me{align-self:flex-end;align-items:flex-end}
.ai-text{padding:7px 11px;border-radius:11px;font-size:13px;line-height:1.65;white-space:pre-wrap;word-break:break-word;
  background:var(--panel-2);color:var(--txt)}
.ai-list li.me .ai-text{background:#1d3a63}
.ai-list li.err .ai-text{color:#ffb3b3}
.ai-list li.typing .ai-text::after{content:'▍';margin-left:2px;color:var(--hot);animation:ai-blink 1s steps(2) infinite}
@keyframes ai-blink{50%{opacity:0}}
.ai-act{margin-top:6px}
.ai-chips{display:flex;gap:6px;flex-wrap:wrap;padding:6px 10px 0}
.ai-chips button{padding:4px 10px;border-radius:999px;cursor:pointer;background:var(--panel-2);border:1px solid var(--line);
  color:var(--txt-dim);font:600 12px system-ui,sans-serif}
.ai-chips button:hover,.ai-chips button.on{border-color:var(--hot);color:var(--txt)}
.ai-form{display:flex;gap:6px;align-items:flex-end;padding:8px 10px}
.ai-form textarea{flex:1;resize:none;min-height:36px;max-height:120px;padding:8px 10px;border-radius:9px;border:1px solid var(--line);
  background:#0f1522;color:var(--txt);font:13px/1.5 system-ui,sans-serif}
.ai-form textarea:focus{outline:none;border-color:var(--accent)}
.ai-form .svg-ic{width:15px;height:15px}
.ai-foot{margin:0;padding:0 12px 8px;font-size:10.5px;color:var(--txt-faint)}
@media (max-width:760px){
  #ai-panel{position:fixed;left:8px;right:8px;bottom:8px;width:auto;height:min(70vh,520px);z-index:950}
}
/* 課程說明卡上的「卡住了？」 */
#coach .g-ask{display:flex;align-items:center;gap:5px;margin-right:auto;height:42px;padding:0 12px;border-radius:10px;cursor:pointer;
  background:none;border:1px dashed rgba(255,194,71,.55);color:var(--txt-dim);font:600 12.5px system-ui,sans-serif}
#coach .g-ask:hover{color:var(--txt);border-style:solid}
#coach .g-ask .svg-ic{width:15px;height:15px;color:var(--hot)}
#coach .g-map:not([hidden]) + .g-ask{margin-right:0}