/* Editor layout metrics. Colour tokens live in theme.css. */
:root{ --r:10px; --rail:56px; --pages:180px; --props:236px; --top:54px }

*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--fg);
  font:14px/1.45 var(--font-ui);
  overflow:hidden; -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit}
svg:not(.ov){width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
svg.ov text{stroke:none}
svg.ov image{-webkit-user-drag:none}
svg .solid{fill:currentColor;stroke:none}

/* ---- top bar --------------------------------------------------------- */
.topbar{
  height:var(--top); display:flex; align-items:center; gap:8px; padding:0 10px 0 12px;
  background:var(--bg-2); border-bottom:1px solid var(--line); position:relative; z-index:30;
}
.brand{display:flex;align-items:center;gap:8px;font-weight:650;letter-spacing:-.01em;white-space:nowrap;color:inherit;text-decoration:none}
.brand-mark{width:22px;height:22px}
.brand-mark rect{fill:var(--accent);stroke:none}
.brand-mark path{stroke:#fff;stroke-width:2}
.spacer{flex:1}
.file{display:none;min-width:0;align-items:baseline;gap:8px;margin-left:6px;padding-left:12px;border-left:1px solid var(--line)}
body:not([data-empty]) .file{display:flex}
.file-name{max-width:34vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:550;outline:none;border-radius:5px;padding:2px 4px}
.file-name:hover{background:var(--bg-3)}
.file-name[contenteditable="true"]{background:var(--bg-3);box-shadow:0 0 0 2px var(--accent-soft)}
.file-meta{color:var(--fg-mute);font-size:12px;white-space:nowrap}

.grp{display:flex;align-items:center;gap:2px;background:var(--bg-3);border-radius:9px;padding:3px}
.zoomgrp{display:none}
body:not([data-empty]) .zoomgrp,body:not([data-empty]) #historyGrp{display:flex}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
  height:32px;padding:0 12px;border:1px solid transparent;border-radius:8px;
  background:transparent;cursor:pointer;white-space:nowrap;transition:background .12s,color .12s,opacity .12s;
}
.btn:hover:not(:disabled){background:var(--bg-3)}
.grp .btn:hover:not(:disabled){background:var(--bg-2)}
.btn:disabled{opacity:.35;cursor:default}
.btn.icon{width:32px;padding:0}
.btn.icon.sm{width:26px;height:26px}
.btn.icon.sm svg{width:15px;height:15px}
.btn.ghost{color:var(--fg-dim);border-color:var(--line)}
.btn.primary{background:var(--accent);color:var(--accent-fg);font-weight:550}
.btn.primary:hover:not(:disabled){background:var(--accent-strong)}
.btn.primary:disabled{background:var(--bg-3);color:var(--fg-mute)}
.btn.lg{height:40px;padding:0 20px;font-size:15px}
.zoomval{min-width:56px;font-variant-numeric:tabular-nums;font-size:13px;color:var(--fg-dim)}
#newBtn{display:none}
body:not([data-empty]) #newBtn{display:inline-flex}
.save-state{font-size:12px;color:var(--fg-mute);white-space:nowrap;margin:0 4px}
.save-state.on{color:var(--ok)}
.lang{position:relative;flex:none}
.lang>summary{
  list-style:none;display:flex;align-items:center;gap:5px;height:32px;padding:0 8px;
  border-radius:8px;background:var(--bg-3);color:var(--fg-dim);cursor:pointer;
  font:600 11px/1 var(--font-ui);letter-spacing:.05em;transition:color .12s,background .12s;
}
.lang>summary::-webkit-details-marker{display:none}
.lang>summary::marker{content:""}
.lang>summary:hover,.lang[open]>summary{color:var(--fg)}
.lang>summary svg{width:15px;height:15px;flex:none;stroke-width:1.5}
.lang-menu{
  position:absolute;top:calc(100% + 7px);right:0;z-index:60;min-width:158px;
  display:flex;flex-direction:column;gap:1px;padding:5px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow);
}
.lang-menu a{
  padding:9px 11px;border-radius:7px;white-space:nowrap;
  color:var(--fg-dim);text-decoration:none;font-size:14px;
}
.lang-menu a:hover{background:var(--bg-3);color:var(--fg)}
.lang-menu a[aria-current]{color:var(--fg);font-weight:600;background:var(--bg-3)}

/* ---- shell ----------------------------------------------------------- */
.shell{display:flex;height:calc(100% - var(--top));min-height:0}
.rail{
  width:var(--rail);flex:none;display:none;flex-direction:column;align-items:center;gap:4px;
  padding:8px 0;background:var(--bg-2);border-right:1px solid var(--line);
}
body:not([data-empty]) .rail{display:flex}
.tool{
  width:38px;height:38px;display:grid;place-items:center;border:0;border-radius:9px;
  background:transparent;color:var(--fg-dim);cursor:pointer;transition:background .12s,color .12s;
}
.tool:hover{background:var(--bg-3);color:var(--fg)}
.tool[aria-pressed="true"]{background:var(--accent);color:var(--accent-fg)}
.tool svg{width:19px;height:19px}

.side{
  width:var(--pages);flex:none;display:none;flex-direction:column;min-height:0;
  background:var(--bg-2);border-right:1px solid var(--line);
}
body:not([data-empty]) .side{display:flex}
/* collapsed to a strip, never hidden, or the toggle goes with it */
body[data-side="off"] .side{width:36px}
body[data-side="off"] .side-head{justify-content:center;padding:8px 0;border-bottom:0}
body[data-side="off"] .side-tabs,body[data-side="off"] #pinToggle{display:none}
body[data-side="off"] .side .thumbs,body[data-side="off"] .side .layers{display:none}
body[data-side="off"] #sideToggle svg{transform:rotate(180deg)}
.side-head{display:flex;align-items:center;gap:2px;padding:6px 5px;border-bottom:1px solid var(--line)}
.side-tabs{flex:1;display:flex;gap:2px;min-width:0}
.side-tab{
  flex:1;min-width:0;height:26px;padding:0 4px;border:0;border-radius:7px;background:transparent;
  font:inherit;font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--fg-mute);
  cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.side-tab:hover{color:var(--fg)}
.side-tab[aria-pressed="true"]{background:var(--bg-3);color:var(--fg)}
#pinToggle[aria-pressed="true"]{color:var(--accent)}
.thumbs{flex:1;overflow-y:auto;padding:8px;display:none;flex-direction:column;gap:8px}
.side[data-view="pages"] .thumbs{display:flex}
.thumb{position:relative;border-radius:8px;cursor:pointer;outline:2px solid transparent;transition:outline-color .12s}
.thumb canvas{display:block;width:100%;height:auto;border-radius:6px;background:var(--paper);box-shadow:0 1px 6px rgba(0,0,0,.35)}
.thumb.active{outline-color:var(--accent)}
.thumb.drag-over{outline-color:var(--ok)}
.thumb-n{position:absolute;left:6px;bottom:6px;background:rgba(0,0,0,.62);color:#fff;font-size:11px;padding:1px 6px;border-radius:20px}
.thumb-acts{position:absolute;top:5px;right:5px;display:flex;gap:3px;opacity:0;transition:opacity .12s}
.thumb:hover .thumb-acts{opacity:1}
.thumb-acts button{width:24px;height:24px;display:grid;place-items:center;border:0;border-radius:6px;background:rgba(12,14,20,.82);color:#fff;cursor:pointer}
.thumb-acts button:hover{background:var(--accent)}
.thumb-acts svg{width:13px;height:13px}

/* ---- stage ----------------------------------------------------------- */
.stage{flex:1;position:relative;min-width:0;background:var(--stage)}
.viewport{position:absolute;inset:0;overflow:auto;touch-action:none;padding:24px 24px 80px;display:none}
body:not([data-empty]) .viewport{display:block}
.pagewrap{margin:0 auto 30px;position:relative;width:max-content}
.page{position:relative;background:var(--paper);box-shadow:var(--shadow);border-radius:2px}
.page canvas{display:block;width:100%;height:100%;border-radius:2px}
.page svg.ov{position:absolute;inset:0;width:100%;height:100%;touch-action:none}
.pagewrap[data-tool="select"] svg.ov,.pagewrap[data-tool="edit"] svg.ov{cursor:default}
.pagewrap:not([data-tool="select"]):not([data-tool="edit"]) svg.ov{cursor:crosshair}
.pagewrap[data-tool="select"] .ov .an,.pagewrap[data-tool="edit"] .ov .an{cursor:move}
.pagewrap:not([data-tool="select"]):not([data-tool="edit"]) .ov .an{pointer-events:none}
.ov .tl{fill:transparent;stroke:none;cursor:text}
.ov .tl:hover{fill:var(--accent);fill-opacity:.16;stroke:var(--accent);stroke-opacity:.55;stroke-width:.6}
.ov .hit{fill:transparent;stroke:transparent;stroke-width:10}
.ov .guide{fill:var(--accent);fill-opacity:.10;stroke:var(--accent);stroke-dasharray:4 3;vector-effect:non-scaling-stroke;pointer-events:none}
.ov .selbox{fill:none;stroke:var(--accent);stroke-dasharray:4 3;vector-effect:non-scaling-stroke;pointer-events:none}
.ov .h{fill:#fff;stroke:var(--accent);vector-effect:non-scaling-stroke;cursor:nwse-resize}
.ov .h[data-h="ne"],.ov .h[data-h="sw"]{cursor:nesw-resize}
.ov .h[data-h="e"],.ov .h[data-h="w"]{cursor:ew-resize}
.ov .h[data-h="n"],.ov .h[data-h="s"]{cursor:ns-resize}
.ov .h[data-h="p1"],.ov .h[data-h="p2"]{cursor:move}
.pagenum{position:absolute;left:50%;transform:translateX(-50%);bottom:-19px;font-size:11px;color:var(--fg-mute)}
.editbox{
  position:absolute;z-index:20;margin:0;border:0;outline:2px solid var(--accent);border-radius:2px;
  background:#fff;color:#000;resize:none;overflow:hidden;padding:0;box-shadow:0 4px 18px rgba(0,0,0,.3);
}

/* ---- dropzone -------------------------------------------------------- */
.drop{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center}
body:not([data-empty]) .drop{display:none}
body.dragging .drop{display:grid;background:color-mix(in srgb,var(--stage) 88%,transparent);backdrop-filter:blur(3px);z-index:40}
.drop-inner{max-width:430px;border:2px dashed var(--line);border-radius:18px;padding:44px 34px;transition:border-color .15s,background .15s}
body.dragging .drop-inner{border-color:var(--accent);background:var(--accent-soft)}
.drop-icon{width:58px;height:58px;margin:0 auto 18px;display:grid;place-items:center;border-radius:16px;background:var(--accent-soft);color:var(--accent)}
.drop-icon svg{width:26px;height:26px;stroke-width:1.8}
.drop h1{margin:0 0 8px;font-size:22px;letter-spacing:-.02em}
.drop p{margin:0 0 18px;color:var(--fg-dim)}
.drop .hint{margin:16px 0 0;font-size:12px;color:var(--fg-mute)}

/* ---- properties ------------------------------------------------------ */
.props{
  width:var(--props);flex:none;display:none;flex-direction:column;gap:2px;overflow-y:auto;
  padding:12px;background:var(--bg-2);border-left:1px solid var(--line);
}
body:not([data-empty]) .props{display:flex}
.props h3{margin:2px 0 10px;font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--fg-mute);font-weight:600}
.row{margin-bottom:14px}
.row label{display:block;font-size:12px;color:var(--fg-dim);margin-bottom:6px}
.swatches{display:flex;flex-wrap:wrap;gap:6px}
.sw{width:24px;height:24px;border-radius:7px;border:1px solid var(--line);cursor:pointer;padding:0}
.sw[aria-pressed="true"]{box-shadow:0 0 0 2px var(--bg-2),0 0 0 4px var(--accent)}
.sw.custom{position:relative;overflow:hidden;background:conic-gradient(#f2545b,#f5c542,#3ecf8e,#3ea0cf,#6d5efc,#f2545b)}
.sw.custom input{position:absolute;inset:-6px;opacity:0;cursor:pointer}
input[type=range]{width:100%;accent-color:var(--accent)}
.seg{display:flex;gap:4px}
.seg button{flex:1;height:30px;border:1px solid var(--line);border-radius:8px;background:transparent;cursor:pointer;color:var(--fg-dim)}
.seg button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-fg)}
.seg button svg{width:16px;height:16px}
.fold{margin:2px 0 14px;border-top:1px solid var(--line);padding-top:10px}
.fold>summary{list-style:none;cursor:pointer;margin-bottom:10px;font-size:12px;color:var(--fg-mute);text-transform:uppercase;letter-spacing:.08em}
.fold>summary::-webkit-details-marker{display:none}
.fold>summary::before{content:'';display:inline-block;width:0;height:0;margin-right:7px;vertical-align:1px;border:4px solid transparent;border-left-color:currentColor;transition:transform .12s}
.fold[open]>summary::before{transform:rotate(90deg)}
.fold>summary:hover{color:var(--fg)}
.fold-hint{margin:2px;font-size:11px;color:var(--fg-mute);line-height:1.4}
.num{display:flex;align-items:center;gap:8px}
.num input[type=range]{flex:1 1 auto;width:auto;min-width:0}
.num input[type=number]{
  flex:0 0 auto;width:58px;height:28px;padding:0 4px 0 6px;
  border:1px solid var(--line);border-radius:8px;background:var(--bg-3);color:var(--fg);
  font:inherit;font-size:12px;font-variant-numeric:tabular-nums;text-align:right;
}
.num input[type=number]:focus-visible{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.num .unit{flex:0 0 auto;font-size:12px;color:var(--fg-mute)}
.layers{flex:1;overflow-y:auto;padding:8px;display:none;flex-direction:column;gap:4px}
.side[data-view="layers"] .layers{display:flex}
.layers-page{margin:0 2px 4px;font-size:10px;letter-spacing:.06em;text-transform:uppercase;color:var(--fg-mute)}
.layer{
  display:flex;align-items:center;gap:8px;min-width:0;
  padding:6px 8px;border:1px solid transparent;border-radius:8px;
  background:var(--bg-3);cursor:grab;font-size:12px;
}
.layer:hover{border-color:var(--line)}
.layer[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft)}
.layer.drag-over{border-color:var(--ok)}
.layer-kind{flex:none;color:var(--fg-mute);text-transform:uppercase;font-size:10px;letter-spacing:.06em}
.layer-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--fg-dim)}
.layers-empty,.layers-hint{margin:6px 2px 0;font-size:11px;color:var(--fg-mute);line-height:1.4}
.props .btn.wide{width:100%;justify-content:center;border:1px solid var(--line)}
.props .btn.del{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 35%,transparent)}
.props .btn.del:hover{background:color-mix(in srgb,var(--danger) 14%,transparent)}
.tipbox{margin-top:auto;padding-top:12px;font-size:12px;color:var(--fg-mute);line-height:1.5;border-top:1px solid var(--line)}

/* ---- toast / busy ---------------------------------------------------- */
.toast{
  position:fixed;left:50%;bottom:24px;transform:translate(-50%,10px);z-index:60;
  background:var(--bg-3);color:var(--fg);border:1px solid var(--line);border-radius:10px;
  padding:10px 16px;box-shadow:var(--shadow);opacity:0;transition:opacity .18s,transform .18s;
}
.toast.show{opacity:1;transform:translate(-50%,0)}
.busy{position:fixed;inset:0;z-index:70;display:grid;place-items:center;align-content:center;gap:14px;grid-auto-flow:row;background:rgba(6,7,11,.55);backdrop-filter:blur(2px);color:#fff}
.spin{width:34px;height:34px;border:3px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---- small screens --------------------------------------------------- */
@media (max-width:760px){
  /* the bar must never overflow: a wider bar stretches the layout viewport
     and pushes the fixed tool rail off screen */
  .topbar{gap:4px;padding:0 8px;overflow-x:clip;overflow-y:visible}
  .grp{padding:2px}
  .lang>summary{height:28px;padding:0 6px;gap:4px}
  .zoomval,#newBtn span{display:none}
  #newBtn{width:34px;padding:0}
  .file{margin-left:2px;padding-left:8px}
  .save-state{width:8px;height:8px;flex:none;margin:0 2px;padding:0;border-radius:50%;background:var(--fg-mute);font-size:0;overflow:hidden}
  .save-state.on{background:var(--ok)}
  body:not([data-empty]) .props.empty{display:none}
  .side{display:none!important}
  .props .layers{display:flex;flex:1 1 100%;max-height:32vh;padding:10px 0 0;border-top:1px solid var(--line)}
  .props{position:fixed;left:0;right:0;bottom:52px;width:auto;max-height:44vh;border-left:0;border-top:1px solid var(--line);z-index:25;flex-direction:row;flex-wrap:wrap;gap:12px;align-items:flex-start}
  .props h3,.tipbox{display:none}
  .row{margin-bottom:0;flex:1 1 130px}
  .fold{flex:1 1 100%;margin:0;padding-top:8px}
  .rail{position:fixed;left:0;right:0;bottom:0;width:auto;height:52px;flex-direction:row;justify-content:flex-start;border-right:0;border-top:1px solid var(--line);z-index:26;overflow-x:auto;padding:7px 8px}
  .tool{flex:none}
  .viewport{padding:12px 8px 150px}
  .brand span,.file-meta{display:none}
  .file-name{max-width:20vw}
  #downloadBtn span{display:none}
  #downloadBtn{width:36px;padding:0}
}