:root{
    color-scheme:dark;
    --bg:#23272d;--panel:#3a404a;--panel2:#303640;--panel3:#292d35;--line:#5a6270;
    --text:#f4f5f7;--muted:#c5cbd3;--gold:#f0a21d;--accent-rgb:240,162,29;--green:#6fe0a4;
    --cyan:#74caff;--red:#ff7b7b;--ink:#15181d;--panel-shadow:0 18px 40px rgba(0,0,0,.28);
  }
  *{box-sizing:border-box}
  body{margin:0;background:var(--bg);color:var(--text);
       font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
  main{width:100%;padding:24px}
  header{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:18px}
  .brand-title{display:flex;align-items:center;gap:10px}
  .brand-mark{width:44px;height:44px;border-radius:10px;display:block;filter:drop-shadow(0 6px 16px rgba(var(--accent-rgb),.18))}
  h1{margin:0;color:var(--gold);font-size:34px;line-height:1}
  .subtitle{color:var(--muted);margin-top:6px}
  .actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
  button{border:0;border-radius:8px;padding:10px 16px;font-size:15px;font-weight:700;
         cursor:pointer;background:linear-gradient(180deg,#ffb53d,#dc8f08);color:var(--ink);
         box-shadow:0 10px 24px rgba(var(--accent-rgb),.18)}
  button.secondary{background:linear-gradient(180deg,#313641,#262a32);color:var(--text);border:1px solid var(--line);
    box-shadow:none}
  button:disabled{opacity:.45;cursor:default}
  .app{display:grid;grid-template-columns:500px minmax(0,1fr);gap:16px}
  .panel{background:linear-gradient(180deg,#434a55,#343a44);border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:var(--panel-shadow)}
  .project{display:grid;gap:10px;margin-bottom:16px}
  .project-row{display:grid;grid-template-columns:1fr auto auto;gap:8px}
  #drop{min-height:170px;border:2px dashed var(--line);border-radius:8px;display:grid;
        place-items:center;text-align:center;padding:18px;cursor:pointer;
        background:linear-gradient(180deg,#363c46,#2b3038)}
  #drop.over{border-color:var(--gold);background:linear-gradient(180deg,#3d4450,#31363f)}
  #drop:focus-visible,button:focus-visible,input:focus-visible,label:focus-visible{
    outline:2px solid var(--cyan);outline-offset:2px}
  .drop-title{font-size:22px;font-weight:800;margin-bottom:8px}
  .drop-note{color:var(--muted)}
  .controls{display:grid;gap:10px;margin-top:16px}
  .processbox,.upscalebox,.export{border:1px solid var(--line);border-radius:10px;
    background:linear-gradient(180deg,#383e49,#2b3038);overflow:hidden}
  .processbox.active-selection{border-color:var(--gold);box-shadow:0 0 0 2px rgba(var(--accent-rgb),.22)}
  .upscalebox.active-selection{border-color:var(--gold);box-shadow:0 0 0 2px rgba(var(--accent-rgb),.22)}
  .processbox summary,.upscalebox summary,.export summary{
    display:flex;justify-content:space-between;align-items:center;gap:8px;padding:12px;
    cursor:pointer;font-weight:800;color:var(--gold);list-style:none}
  .processbox summary::-webkit-details-marker,.upscalebox summary::-webkit-details-marker,.export summary::-webkit-details-marker{display:none}
  .processbox summary::after,.upscalebox summary::after,.export summary::after{content:"+";color:var(--muted)}
  .processbox[open] summary::after,.upscalebox[open] summary::after,.export[open] summary::after{content:"-"}
  .selection-badge{margin-left:auto;color:var(--green);font-size:12px}
  .section-body{display:grid;gap:6px;padding:0 10px 10px}
  .box-title{font-weight:800;color:var(--gold)}
  .label{display:block;color:var(--muted);font-size:11px;margin-bottom:4px}
  .segments{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
  .segments input{position:absolute;opacity:0;pointer-events:none}
  .segments span{display:block;text-align:center;border:1px solid var(--line);
    border-radius:8px;padding:9px 8px;background:linear-gradient(180deg,#3a414c,#2d323b);cursor:pointer}
  .segments input:checked+span{background:var(--gold);color:var(--ink);border-color:var(--gold);
    font-weight:800}
  .export .segments{grid-template-columns:repeat(2,1fr)}
  select,textarea,input[type=number],input[type=text],input[type=file]{width:100%;
    background:linear-gradient(180deg,#373d47,#2c313a);color:var(--text);
    border:1px solid var(--line);border-radius:8px;padding:7px 9px;font-size:13px;color-scheme:dark}
  select option{background:#2c313a;color:var(--text)}
  select option:checked{background:#3a414c;color:var(--text)}
  select.lang-select{width:auto;min-width:82px}
  textarea{resize:vertical;min-height:52px}
  .hint{color:var(--muted);font-size:12px;margin-top:7px}
  .tool-note{padding:6px 8px;border:1px dashed rgba(var(--accent-rgb),.35);border-radius:6px;
    background:linear-gradient(180deg,rgba(var(--accent-rgb),.12),rgba(255,255,255,.02));color:var(--text);font-size:11px;line-height:1.25}
  #presetHint{margin-top:6px}
  .toggle-row{display:flex;align-items:center;gap:8px;color:var(--text);font-size:13px;min-height:36px}
  .toggle-row .check-label{display:flex;align-items:center;gap:8px;min-width:0}
  .toggle-row input{width:16px;height:16px;accent-color:var(--gold)}
  .custom-settings{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:10px;border:1px solid var(--line);border-radius:8px;background:linear-gradient(180deg,#343943,#272c33)}
  .custom-settings[hidden]{display:none}
  .custom-settings .wide{grid-column:1/-1}
  .custom-settings .field{display:grid;gap:5px}
  .custom-settings input[type=range]{width:100%;accent-color:var(--gold)}
  .custom-settings output{color:var(--muted);font-size:12px;text-align:right}
  .label-row{display:flex;align-items:center;gap:6px;min-width:0}
  .label-row .label{margin:0}
  .info-btn{width:20px;height:20px;padding:0;border-radius:50%;display:grid;place-items:center;
    background:transparent;border:0;color:var(--muted);box-shadow:none}
  .info-btn:hover,.info-btn:focus-visible{color:var(--gold);background:rgba(var(--accent-rgb),.12)}
  .info-btn svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
  .help-popover{position:fixed;inset:auto;width:min(340px,calc(100vw - 28px));margin:0;padding:16px 18px 14px;
    border:1px solid var(--line);border-radius:10px;background:linear-gradient(180deg,#3b414c,#272c33);
    color:var(--text);box-shadow:0 20px 50px rgba(0,0,0,.45);z-index:10}
  .help-popover::backdrop{background:transparent}
  .help-popover strong{display:block;padding-right:30px;color:var(--gold);font-size:14px;margin-bottom:8px}
  .help-popover p{margin:0 0 10px;color:var(--text);font-size:13px;line-height:1.4}
  .help-popover ul{margin:0;padding-left:18px;color:var(--muted);font-size:12px;line-height:1.45}
  .popover-close{position:absolute;right:8px;top:8px;width:28px;height:28px;padding:0;display:grid;place-items:center;
    background:transparent;border:1px solid transparent;color:var(--muted);box-shadow:none}
  .popover-close:hover,.popover-close:focus-visible{border-color:var(--line);color:var(--text);background:#303640}
  .popover-close svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round}
  .twocol{display:grid;grid-template-columns:1fr 1fr;gap:6px}
  #message{min-height:22px;margin-top:12px;color:var(--muted)}
  #message.error{color:var(--red)}
  #progress{height:8px;background:linear-gradient(180deg,#383d47,#2b3038);border-radius:999px;overflow:hidden;margin-top:12px}
  #progress i{display:block;height:100%;width:0;background:var(--cyan);transition:width .2s}
  .workspace{min-width:0;background:linear-gradient(180deg,rgba(72,79,92,.95),rgba(52,57,67,.92));
    border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:16px;box-shadow:var(--panel-shadow)}
  .toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
  .pick-actions{display:flex;gap:8px;flex-wrap:wrap}
  .pick-actions .iconbtn{width:40px;height:40px}
  #selectToggle svg+svg{display:none}
  #selectToggle.is-clear svg:first-child{display:none}
  #selectToggle.is-clear svg+svg{display:block}
  .bulk{display:flex;align-items:center;gap:6px;background:linear-gradient(180deg,#3b414c,#2f343d);border:1px solid var(--line);border-radius:8px;padding:4px 6px}
  .bulk[hidden]{display:none}
  .bulk span{color:var(--muted);font-size:12px}
  .bulk .iconbtn{width:32px;height:32px}
  #results{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px;align-items:start}
  .empty{min-height:420px;display:grid;place-items:center;text-align:center;color:var(--muted);
    background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,0));
    border:1px dashed rgba(255,255,255,.08);border-radius:12px}
  .card{position:relative;background:linear-gradient(180deg,#343943,#2a2f37);border:1px solid var(--line);border-radius:10px;overflow:hidden;align-self:start;box-shadow:0 12px 28px rgba(0,0,0,.24)}
  .card.dragging{opacity:.42;transform:scale(.985)}
  .card.drop-before,.card.drop-after{border-color:var(--gold);box-shadow:0 0 0 2px rgba(var(--accent-rgb),.2)}
  .card.drop-before::before,.card.drop-after::after{content:"";position:absolute;left:10px;right:10px;height:4px;
    border-radius:999px;background:var(--gold);box-shadow:0 0 18px rgba(var(--accent-rgb),.65);z-index:4}
  .card.drop-before::before{top:6px}
  .card.drop-after::after{bottom:6px}
  .drag-preview{position:fixed;top:-1000px;left:-1000px;pointer-events:none;opacity:.92;
    transform:rotate(1.5deg);box-shadow:0 18px 42px rgba(0,0,0,.45),0 0 0 2px rgba(var(--accent-rgb),.35);z-index:9999}
  .card-head{display:flex;justify-content:space-between;gap:8px;padding:10px 12px;
    border-bottom:1px solid var(--line);align-items:center;
    background:linear-gradient(180deg,#3c414b,#323740)}
  .drag-handle{flex:0 0 34px;cursor:grab}
  .drag-handle:active{cursor:grabbing}
  .pick{display:flex;align-items:center;gap:8px;min-width:0;flex:1}
  .pick input{width:16px;height:16px;accent-color:var(--gold)}
  .name{min-width:0;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .compare{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);cursor:zoom-in}
  .compare:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
  .shot{background:#282c33;min-height:180px;display:grid;grid-template-rows:1fr auto}
  .shot img{width:100%;height:230px;object-fit:contain;display:block}
  .chk{background:conic-gradient(#555 90deg,#777 90deg 180deg,#555 180deg 270deg,#777 270deg) 0 0/22px 22px}
  .caption{font-size:12px;color:var(--muted);padding:7px 8px;background:linear-gradient(180deg,#373d47,#2b3038)}
  .edit-row{display:grid;grid-template-columns:minmax(0,1fr);gap:8px;padding:10px 12px;border-top:1px solid var(--line);
    background:linear-gradient(180deg,#343943,#2d323b)}
  .edit-row .label{margin-bottom:5px}
  .card-foot{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;gap:8px;
    border-top:1px solid rgba(255,255,255,.04);background:linear-gradient(180deg,#2f343c,#272c33)}
  .card-actions{display:flex;gap:6px}
  .meta{color:var(--muted);font-size:12px;min-width:0;overflow:hidden;text-overflow:ellipsis}
  .linkbtn{padding:7px 10px;font-size:13px}
  .iconbtn{width:34px;height:34px;padding:0;display:grid;place-items:center}
  .iconbtn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
  .danger{color:var(--red)!important}
  .modal{position:fixed;inset:0;background:rgba(0,0,0,.78);display:grid;grid-template-rows:auto minmax(0,1fr);
    padding:8px;z-index:5}
  .modal[hidden]{display:none}
  .modal-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:12px}
  .modal-title{font-weight:800;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .bgbar{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;align-items:center}
  .bgbar button{padding:7px 10px;font-size:13px}
  .bgbar button.on{border-color:var(--gold);box-shadow:0 0 0 2px rgba(var(--accent-rgb),.24)}
  .bgbar .swatch{width:30px;height:30px;border-radius:50%;padding:0;background:var(--swatch);border:2px solid var(--line)}
  .bgbar .swatch-checker{background:conic-gradient(#555 90deg,#777 90deg 180deg,#555 180deg 270deg,#777 270deg) 0 0/14px 14px}
  .bgbar .swatch.on,.color-swatch.on span{border-color:var(--gold);box-shadow:0 0 0 2px rgba(var(--accent-rgb),.24)}
  .color-swatch{position:relative;width:30px;height:30px;display:inline-block;cursor:pointer}
  .color-swatch input{position:absolute;inset:0;opacity:0;cursor:pointer}
  .color-swatch span{display:block;width:30px;height:30px;border-radius:50%;border:2px solid var(--line);
    background:var(--picked,#fff)}
  .zoom-label{align-self:center;min-width:54px;text-align:center;color:var(--muted);font-size:13px}
  #previewBody{min-height:0;height:calc(100vh - 96px);max-height:calc(100vh - 96px);display:grid;grid-template-columns:minmax(0,1fr);gap:12px;overflow:hidden}
  #preview.editing #previewBody{grid-template-columns:minmax(0,1fr) 620px}
  .preview-editor{min-height:0;min-width:0;height:100%;max-height:100%;overflow-y:scroll;overflow-x:hidden;display:block;padding-right:4px;overscroll-behavior:contain;scrollbar-gutter:stable}
  .preview-editor .processbox,.preview-editor .upscalebox{height:auto;margin-bottom:14px}
  .preview-editor::-webkit-scrollbar{width:12px}
  .preview-editor::-webkit-scrollbar-track{background:#2d323a;border-left:1px solid var(--line)}
  .preview-editor::-webkit-scrollbar-thumb{background:#67707d;border-radius:999px;border:2px solid #2d323a}
  .preview-editor::-webkit-scrollbar-thumb:hover{background:#687180}
  #previewNav{position:fixed;right:32px;bottom:32px;z-index:6;display:grid;gap:8px}
  #preview.editing #previewNav{right:664px}
  .compare-tools{display:grid;grid-template-columns:auto 180px auto;gap:8px;align-items:center;background:rgba(52,57,67,.92);
    border:1px solid var(--line);border-radius:8px;padding:8px;box-shadow:0 8px 24px rgba(0,0,0,.35);color:var(--muted);font-size:12px}
  .compare-tools input{width:180px;accent-color:var(--gold)}
  .zoom-tools{display:flex;gap:6px;justify-content:flex-end;align-items:center;background:rgba(52,57,67,.92);
    border:1px solid var(--line);border-radius:8px;padding:8px;box-shadow:0 8px 24px rgba(0,0,0,.35)}
  .zoom-tools button{padding:7px 10px;font-size:13px}
  #previewStage{position:relative;overflow:auto;border:1px solid var(--line);border-radius:8px;
    min-height:0;background:#383e49;cursor:grab;overscroll-behavior:contain}
  #previewStage.dragging{cursor:grabbing}
  #previewStage.checker{background:conic-gradient(#555 90deg,#777 90deg 180deg,#555 180deg 270deg,#777 270deg) 0 0/24px 24px}
  #previewStage.dark{background:#030303}
  #previewStage.light{background:#f2f0e9}
  #previewStage.white{background:#fff}
  #previewStage.blue{background:#111c42}
  #previewStage.green{background:#13351e}
  #previewStage.red{background:#401111}
  #previewPlane{min-width:100%;min-height:100%;display:grid;place-items:center;padding:32px}
  #previewCompareFrame{position:relative;display:block;--compare-pos:50%}
  #previewImg,#previewBeforeImg{max-width:none;max-height:none;display:block;image-rendering:auto;user-select:none;-webkit-user-drag:none;pointer-events:none}
  #previewBeforeImg{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;clip-path:inset(0 calc(100% - var(--compare-pos)) 0 0)}
  #previewCompareLine{position:absolute;top:0;bottom:0;left:var(--compare-pos);width:24px;transform:translateX(-50%);
    background:linear-gradient(90deg,transparent calc(50% - 1px),var(--gold) calc(50% - 1px),var(--gold) calc(50% + 1px),transparent calc(50% + 1px));
    cursor:ew-resize;pointer-events:auto;touch-action:none}
  #previewCompareLine::before{content:"";position:absolute;top:0;bottom:0;left:50%;width:2px;transform:translateX(-50%);box-shadow:0 0 0 1px rgba(0,0,0,.35)}
  #previewImg.pixel,#previewBeforeImg.pixel{image-rendering:pixelated}
  #previewMap{width:170px;height:120px;border:1px solid var(--line);border-radius:8px;
    background:#2c3139;box-shadow:0 8px 24px rgba(0,0,0,.45);cursor:pointer}
  @media (max-width:820px){
    main{padding:14px} header{display:block} .actions{justify-content:stretch;margin-top:14px}
    .actions button{flex:1}.app{grid-template-columns:1fr}
    #drop{min-height:140px}.segments{grid-template-columns:1fr}.twocol,.custom-settings{grid-template-columns:1fr}
    .project-row,.edit-row{grid-template-columns:1fr}.toolbar{display:grid}.bulk{flex-wrap:wrap}
    .modal{padding:10px}.modal-head{display:grid}
    .bgbar{justify-content:flex-start}#preview.editing #previewBody{grid-template-columns:1fr}
    .preview-editor{max-height:42vh}#previewNav,#preview.editing #previewNav{right:20px;bottom:20px}.zoom-tools{padding:6px}#previewMap{width:130px;height:92px}
  }