:root{
  --ink:#1A2332;
  --ink-soft:#44506A;
  --muted:#7C8697;
  --paper:#FFFFFF;
  --canvas:#EEF1F5;
  --band:#E7EBF2;
  --accent:#2563EB;
  --accent-deep:#1D4ED8;
  --accent-soft:#EAF0FE;
  --line:#DFE3EA;
  --line-soft:#EEF1F5;
  --red:#DC2626;
  --green:#16A34A;
  --shadow:0 8px 32px rgba(20,30,50,.12);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:"Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  background:var(--canvas);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit;}
input,select,textarea{font-family:inherit;}

/* ---------- 工具列 ---------- */
.toolbar{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(180deg,#1A2332,#101623);
  border-bottom:1px solid #2b3446;
  padding:12px 22px;
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
}
.brand-mark{display:flex;align-items:center;gap:10px;line-height:1;}
.brand-mark img{height:56px;max-width:180px;object-fit:contain;display:block;}
.brand-mark .cn{font-size:16px;font-weight:700;color:#fff;letter-spacing:.05em;}
.brand-mark .sub{font-size:11px;color:#8b96ac;letter-spacing:.08em;margin-top:3px;}
.tb-spacer{flex:1;}
.tb-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;}
button.act{
  font-family:inherit;font-size:13px;cursor:pointer;
  border-radius:8px;padding:8px 14px;border:1px solid transparent;
  display:inline-flex;align-items:center;gap:6px;transition:.15s;
}
.act.ghost{background:#242d40;color:#d3d9e4;border-color:#374158;}
.act.ghost:hover{background:#2c3650;border-color:var(--accent);}
.act.primary{background:var(--accent);color:#fff;font-weight:600;}
.act.primary:hover{background:var(--accent-deep);}
.act.danger{color:#f2a89a;}
.act.danger:hover{border-color:var(--red);color:#ffb4a6;background:#3a2420;}
.act:disabled{opacity:.45;cursor:default;}
.proj-select{font-family:inherit;font-size:13px;background:#242d40;color:#eef1f7;border:1px solid #374158;border-radius:8px;padding:8px 12px;cursor:pointer;max-width:240px;}
.proj-select:hover{border-color:var(--accent);}
.save-tag{font-size:12px;color:#8bd0a0;display:flex;align-items:center;gap:5px;white-space:nowrap;}
.save-tag.offline{color:#e0b26a;}
.save-tag.local{color:#9fb0cc;}

/* ---------- 設定列 ---------- */
.settings{
  background:#151b28;border-bottom:1px solid #2b3446;
  padding:10px 22px;display:flex;gap:22px;align-items:center;flex-wrap:wrap;
  color:#c8d0dd;font-size:13px;
}
.settings label{display:flex;align-items:center;gap:7px;cursor:pointer;}
.settings input[type=number]{
  width:88px;background:#0e131d;border:1px solid #313b50;color:#eef1f7;
  border-radius:6px;padding:5px 8px;font-family:inherit;font-size:13px;text-align:right;
}
.switch{position:relative;width:36px;height:20px;flex:none;}
.switch input{opacity:0;width:0;height:0;}
.slider{position:absolute;inset:0;background:#3a4459;border-radius:20px;transition:.2s;}
.slider:before{content:"";position:absolute;height:14px;width:14px;left:3px;top:3px;background:#c8d0dd;border-radius:50%;transition:.2s;}
.switch input:checked + .slider{background:var(--accent);}
.switch input:checked + .slider:before{transform:translateX(16px);background:#fff;}

/* ---------- 畫布與 A4 紙 ---------- */
.canvas{padding:32px 20px 100px;display:flex;justify-content:center;background:var(--canvas);}
.sheet{
  width:210mm;min-height:296mm;background:var(--paper);
  print-color-adjust:exact;-webkit-print-color-adjust:exact;
  box-shadow:var(--shadow);padding:16mm 15mm 14mm;position:relative;
}
.sheet-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding-bottom:14px;border-bottom:2px solid var(--ink);}
.head-left{display:flex;gap:14px;align-items:center;}
.head-left img.logo{height:100px;max-width:300px;object-fit:contain;}
.head-left .cn{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:.06em;}
.head-left .contact{margin-top:8px;font-size:11px;color:var(--muted);line-height:1.8;}
.head-title{
  background:var(--ink);color:#fff;
  font-size:22px;letter-spacing:.22em;font-weight:700;
  padding:16px 26px;text-align:center;white-space:nowrap;align-self:center;
  border-radius:4px;
}
.head-title[contenteditable]{cursor:text;}
.head-title:focus{outline:2px dashed var(--accent);outline-offset:3px;}

.meta-grid{
  margin-top:10px;border-bottom:1px solid var(--line);
  display:grid;grid-template-columns:1fr 1fr;gap:3px 30px;padding:10px 2px 12px;font-size:12.5px;
}
.meta-row{display:flex;gap:8px;align-items:baseline;}
.meta-row .lbl{color:var(--muted);white-space:nowrap;flex:none;width:64px;}
.meta-row .val{flex:1;}

/* 通用可編輯輸入 */
.ci{
  font-family:inherit;font-size:inherit;color:inherit;
  border:none;background:transparent;padding:2px 3px;border-radius:3px;
  width:100%;transition:background .12s,box-shadow .12s;
}
.ci:hover{background:var(--accent-soft);}
.ci:focus{outline:none;background:#fff;box-shadow:inset 0 -2px 0 var(--accent);}
.ci.num{text-align:right;font-variant-numeric:tabular-nums;}
.ci.strong{font-weight:600;}
textarea.ci{resize:none;line-height:1.6;overflow:hidden;}

/* ---------- 分類區塊 ---------- */
.cat{margin-top:18px;page-break-inside:avoid;}
.cat-band{
  background:var(--band);border-top:2px solid var(--accent);
  display:flex;align-items:center;gap:10px;padding:8px 12px;
}
.cat-band > *{min-width:0;}
.cat-idx{font-size:11px;color:var(--accent-deep);font-weight:700;letter-spacing:.08em;flex:none;}
.cat-name{font-size:14.5px;font-weight:700;color:var(--ink);letter-spacing:.03em;flex:0 1 140px;}
.cat-en{font-size:10.5px;color:var(--muted);letter-spacing:.04em;font-style:italic;flex:1 1 100px;}
.cat-band .flex{flex:1 1 auto;}
.cat-sub{font-size:14.5px;font-weight:700;color:var(--accent-deep);font-variant-numeric:tabular-nums;flex:none;white-space:nowrap;}
.cat-band .row-del{flex:none;}
.cat-grip{flex:none;}

table.items{width:100%;border-collapse:collapse;font-size:11.5px;}
table.items th{
  color:var(--muted);font-weight:500;font-size:10.5px;letter-spacing:.04em;
  text-align:left;padding:5px 6px;border-bottom:1px solid var(--line);
}
table.items th.r,table.items td.r{text-align:right;}
table.items th.c,table.items td.c{text-align:center;}
table.items td{padding:2px 4px;border-bottom:1px solid var(--line-soft);vertical-align:top;}
.col-idx{width:26px;} .col-qty{width:50px;} .col-unit{width:56px;}
.col-price{width:74px;} .col-amt{width:88px;} .col-cost{width:74px;} .col-mode{width:34px;} .col-del{width:118px;white-space:nowrap;}
.secrow td{background:transparent;border-top:none;border-bottom:1px solid var(--line-soft);padding:9px 8px 2px;}
.secrow .seclabel{font-style:italic;font-weight:600;color:var(--accent-deep);font-size:12px;}
.secrow .seclabel::placeholder{font-style:italic;color:#b9c2d2;}
input.ci.linked{color:var(--accent-deep) !important;}
.add-date{font-size:10px;color:var(--accent-deep);font-style:italic;margin-top:2px;}
.mode-btn{font-family:inherit;font-size:10.5px;cursor:pointer;background:var(--band);border:1px solid var(--line);border-radius:5px;padding:3px 7px;color:var(--muted);}
.mode-btn.on{background:var(--accent);color:#fff;border-color:var(--accent-deep);font-weight:700;}
td.amt-cell{font-weight:600;font-variant-numeric:tabular-nums;padding-top:3px;}
.neg{color:var(--red);}

.grip{display:inline-block;cursor:grab;color:#b7c0d1;font-size:14px;line-height:1;padding:2px 3px;border-radius:4px;touch-action:none;user-select:none;vertical-align:middle;}
.grip:hover{color:var(--accent-deep);background:var(--accent-soft);}
.grip:active{cursor:grabbing;}
tr.dragging{opacity:.4;}
tr.drop-before td{box-shadow:inset 0 2px 0 0 var(--accent);}
tr.drop-after td{box-shadow:inset 0 -2px 0 0 var(--accent);}
.cat-grip{cursor:grab;color:var(--accent-deep);font-size:15px;line-height:1;padding:0 6px 0 0;touch-action:none;user-select:none;}
.cat-grip:active{cursor:grabbing;}
.cat-dragging{opacity:.45;}
.cat-drop-before{box-shadow:0 -3px 0 0 var(--accent);}
.cat-drop-after{box-shadow:0 3px 0 0 var(--accent);}

.dot{width:12px;height:12px;border-radius:50%;border:1.5px solid #fff;box-shadow:0 0 0 1px #c7cedd;cursor:pointer;padding:0;vertical-align:middle;margin-right:3px;}
.dot:hover{box-shadow:0 0 0 1px var(--accent);}
.colorPop{position:fixed;z-index:200;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow);padding:11px 12px;display:none;width:200px;}
.colorPop.on{display:block;}
.colorPop .cap{font-size:11px;color:var(--muted);margin-bottom:8px;}
.colorPop .sw-wrap{display:flex;gap:8px;margin-bottom:10px;flex-wrap:wrap;}
.colorPop .sw{width:22px;height:22px;border-radius:50%;cursor:pointer;border:2px solid #fff;box-shadow:0 0 0 1px #ddd;}
.colorPop .sw:hover{transform:scale(1.12);box-shadow:0 0 0 1px var(--accent);}
.colorPop .row2{display:flex;align-items:center;gap:10px;border-top:1px solid var(--line-soft);padding-top:9px;}
.colorPop .reset{font-size:12px;color:var(--accent-deep);background:none;border:none;cursor:pointer;margin-left:auto;}
.row-copy,.row-dup{border:none;background:transparent;color:#b7c0d1;cursor:pointer;font-size:12px;line-height:1;padding:2px 3px;border-radius:4px;vertical-align:middle;}
.row-copy:hover,.row-dup:hover{background:var(--accent-soft);color:var(--accent-deep);}
.row-del{border:none;background:transparent;color:#b7c0d1;cursor:pointer;font-size:15px;line-height:1;padding:2px 4px;border-radius:4px;}
.row-del:hover{background:#fbe4df;color:var(--red);}

.cat-tools{display:flex;gap:8px;padding:7px 4px 2px;}
.mini{
  font-family:inherit;font-size:11px;cursor:pointer;color:var(--accent-deep);
  background:transparent;border:1px dashed var(--line);border-radius:6px;padding:4px 10px;transition:.14s;
}
.mini:hover{background:var(--accent-soft);border-color:var(--accent);}
.mini.paste{background:var(--band);border-style:solid;border-color:var(--accent);font-weight:700;}

.cat-notes{padding:6px 6px 0;}
.cat-note-row{display:flex;align-items:center;gap:6px;font-size:11.5px;color:var(--ink-soft);padding:2px 0;}
.cat-note-row .ci{background:transparent;flex:1;min-width:0;}
.add-cat-bar{display:flex;justify-content:center;margin-top:22px;}

/* ---------- 總計 ---------- */
.totals{margin-top:20px;display:flex;justify-content:flex-end;}
.totals-box{width:260px;font-size:12.5px;}
.totals-row{display:flex;justify-content:space-between;padding:5px 4px;border-bottom:1px solid var(--line-soft);}
.totals-row.grand{border-top:2px solid var(--ink);border-bottom:none;margin-top:4px;padding-top:10px;font-size:16px;font-weight:800;color:var(--accent-deep);}
.totals-row .lbl{color:var(--muted);}
.totals-row.grand .lbl{color:var(--ink);}

/* ---------- 備註條款 / 簽名 ---------- */
.terms{margin-top:24px;font-size:11px;color:var(--ink-soft);line-height:1.9;}
.terms .t-row{display:flex;gap:6px;align-items:flex-start;}
.terms .t-row .ci{flex:1;min-width:0;}
.sign-row{display:flex;justify-content:space-between;margin-top:40px;font-size:12px;color:var(--ink-soft);}
.sign-box{width:44%;border-top:1px solid var(--line);padding-top:6px;text-align:center;}

/* ---------- 空狀態 ---------- */
.empty-cats{text-align:center;color:var(--muted);font-size:13px;padding:60px 0;border:1.5px dashed var(--line);border-radius:10px;margin-top:20px;}

/* ---------- Modal / 彈窗 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(15,20,32,.55);z-index:300;display:none;align-items:center;justify-content:center;}
.modal-mask.on{display:flex;}
.modal{background:#fff;border-radius:14px;box-shadow:var(--shadow);width:420px;max-width:92vw;max-height:86vh;overflow:auto;padding:22px 24px;}
.modal h3{margin:0 0 14px;font-size:16px;color:var(--ink);}
.modal .field{margin-bottom:12px;}
.modal .field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px;}
.modal .field input,.modal .field textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:13px;background:#fafbfc;color:var(--ink);}
.modal .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:18px;}
.modal .muted{color:var(--muted);font-size:12px;line-height:1.7;}
.case-list-item{display:flex;justify-content:space-between;align-items:center;padding:9px 10px;border-radius:8px;cursor:pointer;font-size:13px;}
.case-list-item:hover{background:var(--accent-soft);}
.case-list-item .name{font-weight:600;color:var(--ink);}
.case-list-item .date{font-size:11px;color:var(--muted);}
.case-list-item .del{border:none;background:none;color:var(--muted);cursor:pointer;font-size:14px;}
.case-list-item .del:hover{color:var(--red);}

/* ---------- Toast ---------- */
.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);background:#1A2332;color:#fff;padding:10px 18px;border-radius:8px;font-size:13px;box-shadow:var(--shadow);z-index:500;opacity:0;pointer-events:none;transition:opacity .2s;}
.toast.on{opacity:1;}

/* ---------- 列印分頁 ----------
   螢幕上以 position:fixed 移到畫面外（而非 display:none），
   讓瀏覽器仍會正常排版計算高度，分頁演算法才能量測正確的 scrollHeight。 */
#printPages{position:fixed;top:0;left:-10000px;width:210mm;}
@media print{
  .toolbar,.settings,.canvas{display:none !important;}
  #printPages{position:static;left:auto;}
  body{background:#fff;}
  .pp{width:210mm;min-height:297mm;padding:16mm 15mm 14mm;position:relative;page-break-after:always;background:#fff;}
  .pp:last-child{page-break-after:auto;}
  .pp .page-num{position:absolute;bottom:8mm;right:15mm;font-size:10px;color:var(--muted);}
}
@page{size:A4;margin:0;}

/* ---------- 響應式 ---------- */
@media (max-width:900px){
  .toolbar,.settings{padding:10px 12px;}
  .tb-actions .label-text{display:none;}
  .sheet{width:100%;padding:6mm;zoom:.62;}
  .canvas{padding:14px 6px 60px;}
}