:root{
    --bg:#e9edf3; --chrome:#fff; --chrome-2:#f5f7fb; --rail:#f1f4f9; --canvas:#2b3038;
    --ink:#1f2937; --ink-soft:#4b5563; --muted:#8a95a5; --line:#e3e8ef; --line-2:#cdd5e0;
    --accent:#1e5a9e; --accent-ink:#fff; --accent-soft:#e8f0fc; --accent-line:#bcd3ee;
    --danger:#dc2626;
    --ui:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    --mono:ui-monospace,"SF Mono","Cascadia Mono",Menlo,Consolas,monospace;
  }
  @media (prefers-color-scheme:dark){:root{
    --bg:#0f1319;--chrome:#181d25;--chrome-2:#1e242e;--rail:#151a21;--canvas:#111418;
    --ink:#e6ebf2;--ink-soft:#aab4c2;--muted:#6b7686;--line:#28303b;--line-2:#333d4a;
    --accent:#4f92d6;--accent-ink:#0b1017;--accent-soft:#16263a;--accent-line:#2c4a6b;
  }}
  *{box-sizing:border-box;}
  html,body{margin:0;height:100%;}
  body{font-family:var(--ui);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;}
  .app{display:flex;flex-direction:column;height:100vh;height:100dvh;min-height:520px;}
  .titlebar{display:flex;align-items:center;gap:12px;padding:7px 14px;background:var(--chrome);border-bottom:1px solid var(--line);}
  .brand{background:none;border:0;padding:0;margin:0;font:inherit;color:inherit;cursor:pointer;
    display:flex;align-items:center;gap:9px;font-weight:700;font-size:14px;min-width:0;text-align:left;}
  .brand .brand-l{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .brand .brand-chev{flex:none;margin-left:-3px;opacity:.55;}
  .brand .rw-pil{flex:none;color:var(--accent);opacity:1;}
  .brand:hover .brand-l{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
  .brand:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
  .brand .mark-logo{display:block;flex:0 0 auto;}
  .titlebar .spacer{flex:1;}
  .tb-back{display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 11px;border:1px solid var(--line-2);border-radius:7px;
    background:var(--chrome-2);color:var(--ink-soft);text-decoration:none;font-size:12.5px;white-space:nowrap;}
  .tb-back:hover{color:var(--ink);border-color:var(--accent);}
  .tb-file{height:28px;padding:0 13px;border:0;border-radius:7px;background:var(--accent);color:#fff;font:inherit;font-size:12.5px;font-weight:650;cursor:pointer;}
  .tb-file:hover{filter:brightness(1.1);}
  .tb-menu{position:absolute;z-index:80;min-width:250px;background:var(--chrome);border:1px solid var(--line-2);border-radius:10px;
    box-shadow:0 18px 40px rgba(0,0,0,.5);padding:6px;display:none;}
  .tb-menu.open{display:block;}
  .tb-menu button{display:flex;align-items:center;gap:9px;width:100%;border:0;background:none;font:inherit;font-size:13px;color:var(--ink);
    text-align:left;padding:7px 9px;border-radius:7px;cursor:pointer;}
  .tb-menu button:hover:not(:disabled){background:var(--chrome-2);}
  .tb-menu button:disabled{opacity:.45;cursor:default;}
  .tb-menu hr{border:0;border-top:1px solid var(--line-2);margin:5px 2px;}
  .tb-menu .snel{margin-left:auto;font-size:11px;color:var(--muted);}
  .doc-name{color:var(--ink-soft);font-size:13px;padding-left:12px;border-left:1px solid var(--line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;}
  .doc-name .vuil{color:var(--muted);}
  .rw-alpha{display:flex;align-items:baseline;gap:8px;padding:5px 14px;background:var(--chrome-2);border-bottom:1px solid var(--line);
    font-size:12px;color:var(--ink-soft);line-height:1.4;}
  .rw-alpha b{flex:none;font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);
    border:1px solid var(--accent-line);border-radius:5px;padding:0 5px;}
  .work{flex:1;display:flex;min-height:0;}
  .stage{flex:1;min-width:0;min-height:0;position:relative;background:var(--canvas);overflow:hidden;overflow:clip;display:flex;align-items:center;justify-content:center;}
  .stage.sleep{outline:3px dashed var(--accent);outline-offset:-9px;}
  #rwDoek{display:block;max-width:100%;max-height:100%;}
  #rwDoek[hidden]{display:none;}
  .stage.pipet #rwDoek{cursor:crosshair;}
  .rw-voor{position:absolute;left:12px;top:12px;padding:3px 9px;border-radius:6px;background:rgba(0,0,0,.6);color:#fff;font-size:12px;font-weight:600;pointer-events:none;}
  .rw-voor[hidden]{display:none;}
  .rw-leeg{display:flex;flex-direction:column;align-items:center;gap:12px;max-width:min(460px,calc(100% - 32px));padding:28px 24px;
    border:2px dashed #66717f;border-radius:14px;color:#dfe5ee;text-align:center;font-size:13.5px;line-height:1.5;}
  .rw-leeg[hidden]{display:none;}
  .rw-leeg .groot{font-size:16px;font-weight:650;color:#fff;}
  .rw-leeg .klein{font-size:12px;color:#aeb7c4;}
  .panels{width:300px;flex-shrink:0;background:var(--chrome);border-left:1px solid var(--line);display:flex;flex-direction:column;overflow-y:auto;}
  .pn-sec{border-bottom:1px solid var(--line);}
  .pn-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 12px 5px;font-size:11px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);}
  .pn-head .lbtn{text-transform:none;letter-spacing:0;font-weight:500;height:24px;}
  .pn-body{padding:2px 12px 12px;display:flex;flex-direction:column;gap:6px;}
  .rw-hist{display:block;width:100%;height:84px;background:var(--chrome-2);border:1px solid var(--line);border-radius:7px;}
  .rw-info{display:grid;grid-template-columns:auto minmax(0,1fr);gap:3px 10px;margin:0;font-size:12.5px;}
  .rw-info dt{color:var(--muted);}
  .rw-info dd{margin:0;color:var(--ink);overflow-wrap:anywhere;}
  .rw-info .leeg{grid-column:1 / -1;color:var(--muted);}
  .rw-rij{display:grid;grid-template-columns:96px minmax(0,1fr) 44px;align-items:center;gap:8px;font-size:12.5px;color:var(--ink-soft);min-height:28px;}
  .rw-rij label{cursor:default;}
  .rw-rij input[type=range]{width:100%;min-width:0;margin:0;}
  .rw-rij .val{font-family:var(--mono);font-size:11px;text-align:right;color:var(--ink);}
  .rw-knoppen{display:flex;gap:6px;flex-wrap:wrap;}
  .lbtn{height:30px;min-width:0;border:1px solid var(--line);background:var(--chrome-2);border-radius:7px;color:var(--ink-soft);display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;font:inherit;font-size:12px;padding:0 9px;}
  .lbtn:hover:not(:disabled){border-color:var(--accent-line);color:var(--ink);}
  .lbtn:disabled{opacity:.4;cursor:default;}
  .lbtn[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent);color:var(--ink);}
  .rw-sel{height:28px;min-width:0;border:1px solid var(--line-2);background:var(--chrome-2);color:var(--ink);border-radius:7px;font:inherit;font-size:12.5px;padding:0 7px;}
  .rw-curvekop{display:flex;gap:6px;}
  .rw-curvekop .rw-sel{flex:1;}
  .rw-curve{display:block;width:100%;max-width:260px;aspect-ratio:1/1;align-self:center;background:var(--chrome-2);border:1px solid var(--line);border-radius:7px;touch-action:none;cursor:crosshair;color:var(--muted);}
  .rw-uitleg{font-size:11.5px;color:var(--muted);line-height:1.4;margin:0;}
  .panels[aria-disabled="true"] .pn-sec.bewerk{opacity:.5;pointer-events:none;}
  .status{display:flex;align-items:center;gap:10px;padding:5px 14px;background:var(--chrome);border-top:1px solid var(--line);font-size:12px;color:var(--ink-soft);}
  .status .spacer{flex:1;}
  .iconbtn{min-width:26px;height:26px;border:1px solid var(--line-2);background:var(--chrome-2);border-radius:6px;color:var(--ink-soft);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font:inherit;font-size:12px;padding:0 6px;}
  .iconbtn:hover:not(:disabled){border-color:var(--accent-line);color:var(--ink);}
  .iconbtn:disabled{opacity:.4;cursor:default;}
  .iconbtn[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent);color:var(--ink);}
  #rwMaat{font-variant-numeric:tabular-nums;font-family:var(--mono);}
  .btn-primary{background:var(--accent);color:var(--accent-ink);border:none;border-radius:8px;height:28px;padding:0 14px;font:inherit;font-size:12.5px;font-weight:600;cursor:pointer;}
  .btn-primary:hover{filter:brightness(1.06);}
  .btn-primary:disabled{opacity:.6;cursor:default;}
  .hidden{display:none!important;}
  button:focus-visible{outline:2px solid var(--accent);outline-offset:1px;}
  .toast{position:fixed;bottom:52px;left:50%;transform:translateX(-50%);background:#1f2937;color:#f4f7fb;padding:9px 16px;border-radius:9px;font-size:13px;font-weight:500;
    border:1px solid rgba(255,255,255,.14);box-shadow:0 8px 24px rgba(0,0,0,.38);z-index:9500;pointer-events:none;width:max-content;max-width:min(92vw,620px);line-height:1.4;text-align:center;}
  .toast[hidden]{display:none;}
  .rw-lezen{position:fixed;bottom:96px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:12px;background:#1f2937;color:#f4f7fb;
    padding:8px 8px 8px 16px;border-radius:9px;font-size:13px;font-weight:500;border:1px solid rgba(255,255,255,.14);box-shadow:0 8px 24px rgba(0,0,0,.38);
    z-index:9500;max-width:min(92vw,620px);}
  .rw-lezen[hidden]{display:none;}
  .rw-lezen button{font:inherit;color:inherit;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:7px;padding:5px 11px;cursor:pointer;min-height:32px;}
  .rw-lezen button:hover{background:rgba(255,255,255,.2);}
  .rw-lezen button:focus-visible{outline:2px solid #9cc0ff;outline-offset:2px;}
  @media (prefers-color-scheme:dark){ .toast{background:#414d5d;color:#eef2f8;border-color:rgba(255,255,255,.16);} }
  .rw-modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center;z-index:60;padding:12px;}
  .rw-modal[hidden]{display:none;}
  .rw-dialog{background:var(--chrome);border:1px solid var(--line);border-radius:14px;width:400px;max-width:100%;max-height:calc(100dvh - 24px);
    box-shadow:0 24px 60px -20px rgba(0,0,0,.5);display:flex;flex-direction:column;overflow:hidden;}
  .rw-dlg-head{padding:14px 18px;font-weight:700;font-size:14px;border-bottom:1px solid var(--line);}
  .rw-dlg-body{padding:14px 18px;display:flex;flex-direction:column;gap:11px;overflow-y:auto;font-size:13px;color:var(--ink-soft);line-height:1.45;}
  .rw-dlg-foot{padding:12px 18px;display:flex;align-items:center;gap:8px;border-top:1px solid var(--line);}
  .rw-dlg-foot .spacer{flex:1;}
  .rw-nrow{display:grid;grid-template-columns:96px 1fr;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-soft);}
  .rw-nrow[hidden]{display:none;}
  .rw-nrow select{height:30px;min-width:0;width:100%;border:1px solid var(--line-2);background:var(--chrome-2);color:var(--ink);border-radius:7px;font:inherit;font-size:12.5px;padding:0 8px;}
  .rw-nrow input[type=range]{width:100%;}
  .rw-sc{display:grid;grid-template-columns:1fr 1fr;gap:4px 18px;font-size:12.5px;}
  .rw-sc div{display:flex;align-items:baseline;gap:8px;}
  .rw-sc span{flex:1;}
  .rw-sc kbd{font-family:var(--mono);font-size:11px;background:var(--chrome-2);border:1px solid var(--line-2);border-bottom-width:2px;border-radius:5px;padding:1px 5px;color:var(--ink);white-space:nowrap;}
  @media (max-width:560px){ .rw-sc{grid-template-columns:1fr;} }
  @media (max-width:820px){
    .app{height:auto;min-height:100vh;min-height:100dvh;}
    .work{display:contents;}
    .titlebar{order:0;} .rw-alpha{order:1;}
    .stage{order:2;flex:1 0 auto;height:52vh;height:52dvh;min-height:280px;}
    .status{order:3;} .panels{order:4;}
    .titlebar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:6px 8px;padding:6px 10px;}
    .brand{grid-area:1 / 1 / 2 / 3;min-width:0;white-space:nowrap;}
    .tb-back{grid-area:1 / 3 / 2 / 4;justify-self:end;}
    .tb-file{grid-area:2 / 1 / 3 / 2;}
    .doc-name{grid-area:2 / 2 / 3 / 3;padding-left:0;border-left:0;}
    #vsKnop{grid-area:2 / 3 / 3 / 4;}
    .titlebar .spacer,#rwOpenKnop{display:none;}
    .rw-alpha{padding:5px 10px;font-size:11.5px;cursor:pointer;}
    .rw-alpha span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
    .rw-alpha.open span{display:block;}
    .status{overflow-x:auto;scrollbar-width:none;min-width:0;max-width:100%;gap:6px;padding:5px 8px;border-bottom:1px solid var(--line);}
    .status::-webkit-scrollbar{display:none;}
    .status > *{flex:none;}
    .status .spacer{display:none;}
    .iconbtn{height:34px;min-width:34px;}
    #rwExport{position:sticky;right:0;z-index:1;height:36px;padding:0 16px;box-shadow:-14px 0 12px -2px var(--chrome),8px 0 0 0 var(--chrome);}
    .panels{width:100%;flex:0 0 auto;border-left:0;padding-bottom:56px;}
    .lbtn{height:36px;}
    .rw-rij{grid-template-columns:92px minmax(0,1fr) 44px;min-height:36px;}
  }