:root{color-scheme:dark;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:14px;line-height:1.4;color:#e6edf7;background:#05080f}
*{box-sizing:border-box}
body{margin:0;background:#05080f}
[hidden]{display:none!important}
button,input,select{font:inherit;color:inherit}
h1,h2,p{margin:0}
.sr-only{position:absolute!important;width:1px;height:1px;margin:0;padding:0;overflow:hidden;clip:rect(0,0,0,0);border:0;opacity:0;pointer-events:none}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.icon{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}

/* Buttons and focus */
button,.file-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:36px;margin:0;padding:8px 14px;border:1px solid #2c4a7c;border-radius:9px;background:#12203a;color:#f2f6fc;font-size:13px;font-weight:550;line-height:1.2;text-align:center;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s,color .15s}
button:hover:not(:disabled),.file-button:hover{background:#1a2f55}
button:disabled{opacity:.4;cursor:default}
.primary{background:#4da3ff;border-color:#4da3ff;color:#04101f;font-weight:650}
.primary:hover:not(:disabled),.file-button.primary:hover{background:#7fbfff;border-color:#7fbfff}
.block{display:flex;width:100%}
.file-button{position:relative}
input[type=file]{position:absolute;width:1px;height:1px;margin:0;padding:0;overflow:hidden;clip:rect(0,0,0,0);border:0;opacity:0}
button:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible,.file-button:focus-within,.thumb:focus-visible{outline:2px solid #7fbfff;outline-offset:2px}
.hint{font-size:12px;line-height:1.5;color:#9db4d6;margin:10px 0 0}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;min-height:36px;padding:0;border-radius:10px;border-color:#1d3358;background:#0e1a30;color:#c6d6ee;cursor:pointer;list-style:none}
.icon-btn:hover:not(:disabled),.preset-menu[open]>.icon-btn{background:#1a2f55;color:#f2f6fc}
.icon-btn::-webkit-details-marker{display:none}
.export-btn{border-color:#4da3ff;color:#7fbfff}
.export-btn:disabled{border-color:#2c4a7c;color:#9db4d6}

/* Sidebar */
.workspace{display:grid;grid-template-columns:292px minmax(0,1fr);grid-template-rows:minmax(0,1fr);height:100vh;overflow:hidden}
aside{min-height:0;padding:20px 20px 12px;overflow:auto;background:#0a1221;border-right:1px solid #1d3358;scrollbar-width:thin;scrollbar-color:#2c4a7c transparent}
.brand{display:flex;align-items:baseline;gap:10px;padding-bottom:4px}
h1{font-size:22px;letter-spacing:-.5px;font-weight:700}
.version{font-size:12px;color:#9db4d6;font-variant-numeric:tabular-nums;cursor:help}
aside section{padding:18px 0;border-bottom:1px solid #1d3358}
aside label{display:block;margin:0 0 8px;font-size:12px;color:#c6d6ee}
aside .file-button{display:flex;width:100%;margin:0;font-size:13px;color:#f2f6fc}
.strength-readout{display:flex;align-items:baseline;gap:8px;margin-bottom:8px}
.strength-readout strong{font-size:16px;font-weight:650}
.strength-readout span{color:#b5c9e8;font-variant-numeric:tabular-nums}
input[type=range]{display:block;width:100%;margin:6px 0 2px;accent-color:#4da3ff}
input[type=range]:focus-visible{outline:2px solid #7fbfff;outline-offset:4px}
#apply{display:flex;width:100%}
#cancel{display:flex;width:100%;margin-top:8px;color:#ffb4b4}
aside details{padding:14px 0;border-bottom:1px solid #1d3358;font-size:12px;color:#b5c9e8}
aside summary{cursor:pointer;font-weight:600;color:#c6d6ee}
aside details .file-button{margin-top:10px}
aside details button{display:flex;width:100%;margin-top:8px}
#model-status{margin:10px 0 0;font-size:12px;color:#c6d6ee}
/* Exclusion brush group (sidebar, visible once a result can be re-rendered) */
.brush{padding:16px 0}
.brush-title{margin:0 0 10px;font-size:12px;font-weight:600;color:#c6d6ee}
.brush .segmented{display:flex}
.brush .segmented label{flex:1;padding:6px 8px;margin:0}
.brush label.brush-size{display:flex;justify-content:space-between;margin:14px 0 0}
.brush label.brush-size span{color:#b5c9e8;font-variant-numeric:tabular-nums}
.brush input[type=range]{margin:6px 0 0}
.brush-tools{display:flex;align-items:center;gap:8px;margin-top:12px}
.brush-tools .icon-btn{flex:none}
.brush-tools .icon-btn:disabled{opacity:.4}
.brush label.check{display:flex;align-items:center;gap:8px;margin:0 0 0 4px;font-size:12px;color:#c6d6ee;cursor:pointer;white-space:nowrap}
.brush label.check input{margin:0;accent-color:#4da3ff}
#results{padding-left:18px;line-height:1.7;margin:8px 0 0}
#about{border-bottom:0}

/* Top bar */
.editor{position:relative;min-width:0;min-height:0;display:flex;flex-direction:column;overflow:hidden;background:#05080f}
.topbar{position:relative;z-index:10;flex:none;height:56px;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:12px;padding:0 16px;background:#0a1221;border-bottom:1px solid #1d3358}
.title-block{min-width:0;display:flex;align-items:baseline;gap:10px}
#filename{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:600}
.dims{flex:none;font-size:12px;color:#9db4d6;font-variant-numeric:tabular-nums}
.view-cluster{position:relative;display:flex;justify-content:center}
.segmented{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid #1d3358;border-radius:999px;background:#0e1a30}
.segmented label{position:relative;display:inline-flex;align-items:center;justify-content:center;margin:0;padding:6px 12px;border-radius:999px;font-size:13px;font-weight:550;color:#c6d6ee;white-space:nowrap;cursor:pointer;transition:background .15s,color .15s}
.segmented label:hover{background:#12203a;color:#f2f6fc}
.segmented label:has(input:checked){background:#4da3ff;color:#04101f;font-weight:650}
.segmented label:has(input:disabled){opacity:.4;cursor:default}
.segmented label:has(input:focus-visible){outline:2px solid #7fbfff;outline-offset:2px}
.segmented input{position:absolute;inset:0;margin:0;opacity:0;cursor:inherit}
.mask-tools{position:absolute;left:calc(100% + 8px);top:50%;transform:translateY(-50%);display:flex;align-items:center;gap:8px;white-space:nowrap}
.mask-tools select{width:auto;min-height:30px;padding:4px 22px 4px 8px;border:1px solid #2c4a7c;border-radius:999px;background:#0e1a30;font-size:12px}
.legend{font-size:11px;color:#c6d6ee;white-space:nowrap}
.swatch{display:inline-block;width:8px;height:8px;margin:0 2px 0 5px;border-radius:2px;vertical-align:0}
/* Beside the view switch there is room for the legend only from 1280 px. Below that the legend is hidden (the engine select keeps its tooltip). */
@media (max-width:1279px){.legend{display:none}}
/* From 800 px down the engine chip sits under the view switch, centred, where it cannot reach the action icons. The legend returns there. */
@media (max-width:1099px){.legend{display:inline}.mask-tools{left:50%;top:calc(100% + 8px);transform:translateX(-50%)}}
.lighten{background:#ff3364}
.darken{background:#2a82ff}
.actions{justify-self:end;display:flex;align-items:center;gap:8px}
.popover{position:absolute;z-index:30;padding:14px;border:1px solid #2c4a7c;border-radius:14px;background:#0a1221;box-shadow:0 18px 48px rgba(0,0,0,.55)}
.preset-menu{position:relative}
.preset-panel{top:calc(100% + 10px);right:0;width:210px;display:grid;gap:8px}
.preset-panel button,.preset-panel .file-button{display:flex;width:100%;margin:0}
.preset-panel .small-file{font-size:13px;color:#f2f6fc}
.export-wrap{position:relative;display:inline-flex}
.export-popover{top:calc(100% + 10px);right:0;width:280px;display:grid;gap:12px;outline:none}
.export-popover .segmented{display:flex}
.export-popover .segmented label{flex:1}
.export-popover .primary{min-height:40px}
.export-caption{font-size:12px;line-height:1.4;color:#9db4d6;text-align:center;text-wrap:balance}

/* Canvas */
.stage{position:relative;flex:1 1 0;min-height:0;overflow:hidden;background:#060b14}
.stage.dropping::after{content:"";position:absolute;inset:12px;z-index:6;border:2px dashed #4da3ff;border-radius:14px;background:rgba(77,163,255,.06);pointer-events:none}
.viewport{position:absolute;inset:0;display:flex;overflow:auto;scrollbar-width:thin;scrollbar-color:#2c4a7c transparent}
.viewport::-webkit-scrollbar{width:10px;height:10px}
.viewport::-webkit-scrollbar-thumb{background:#2c4a7c;border-radius:10px;border:3px solid #060b14}
.viewport.can-pan{cursor:grab}
.viewport.panning,.viewport.panning *{cursor:grabbing}
#image-wrap{position:relative;flex:none;margin:auto;line-height:0;box-shadow:0 12px 40px rgba(0,0,0,.45)}
#preview{display:block;width:100%;height:100%;user-select:none;-webkit-user-drag:none}
/* Exclusion brush overlay: drawn at the displayed size; it takes pointer events only while Protect or Erase is on. */
#brush-canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
#brush-canvas.active{pointer-events:auto;cursor:none}
#brush-ring{position:absolute;z-index:1;width:40px;height:40px;border:1px solid rgba(255,255,255,.9);border-radius:50%;box-shadow:0 0 0 1px rgba(0,0,0,.5);transform:translate(-50%,-50%);pointer-events:none}
.empty{margin:auto;padding:28px;max-width:340px;text-align:center}
.empty h2{margin:0 0 6px;font-size:22px;letter-spacing:-.3px}
.empty .or{margin:6px 0 12px;font-size:12px;color:#9db4d6}
.empty .hint{margin-top:14px}
#progress{position:absolute;top:0;left:0;z-index:8;width:100%;height:3px;margin:0;border:0;opacity:0;transition:opacity .25s;appearance:none;-webkit-appearance:none;background:transparent;pointer-events:none}
.editor.busy #progress{opacity:1}
#progress::-webkit-progress-bar{background:rgba(77,163,255,.14)}
#progress::-webkit-progress-value{background:#4da3ff;transition:width .2s linear}
#progress::-moz-progress-bar{background:#4da3ff}
.status-chip{position:absolute;left:16px;bottom:16px;z-index:9;max-width:min(520px,calc(100% - 210px));padding:7px 12px;border:1px solid #1d3358;border-radius:999px;background:rgba(10,18,33,.88);color:#c6d6ee;font-size:12px;line-height:1.35;opacity:0;transform:translateY(4px);transition:opacity .35s ease,transform .35s ease;pointer-events:none;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.status-chip.show{opacity:1;transform:none}
.status-chip.error{color:#ffb4b4;border-color:#6b2f3a}
.status-chip:empty{display:none}
.snackbar{position:absolute;top:12px;left:50%;z-index:12;transform:translateX(-50%);display:flex;align-items:center;gap:12px;padding:6px 6px 6px 14px;border:1px solid #2c4a7c;border-radius:999px;background:#12203a;box-shadow:0 10px 30px rgba(0,0,0,.45);font-size:13px;white-space:nowrap}
.snackbar button{min-height:30px;padding:4px 12px;font-size:12px}
.zoom-pill{position:absolute;right:16px;bottom:16px;z-index:9;display:inline-flex;align-items:center;gap:2px;height:36px;padding:0 4px;border:1px solid #1d3358;border-radius:999px;background:rgba(10,18,33,.84);box-shadow:0 8px 24px rgba(0,0,0,.4);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.zoom-pill button{min-width:0;height:28px;min-height:28px;margin:0;padding:0 8px;border:0;border-radius:999px;background:transparent;color:#e6edf7}
.zoom-pill button:hover:not(:disabled){background:#1a2f55}
.zoom-pill button:focus-visible{outline-offset:-2px}
.zoom-pill .zoom-step{width:30px;padding:0}
.zoom-pill .zoom-readout{min-width:84px;padding:0 10px;font-size:12px;font-weight:600;color:#c6d6ee;font-variant-numeric:tabular-nums}
.zoom-pill .divider{width:1px;height:18px;margin:0 4px;background:#2c4a7c}

/* Filmstrip */
.strip{flex:none;display:flex;align-items:center;gap:12px;height:72px;padding:0 14px;background:#0a1221;border-top:1px solid #1d3358}
.queue{flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:10px;height:72px;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;scrollbar-color:#2c4a7c transparent}
.thumb{flex:none;height:56px;min-height:0;margin:0;padding:0;border:0;border-radius:8px;background:transparent;overflow:visible}
.thumb:hover:not(:disabled){background:transparent}
.thumb:disabled{opacity:.5}
.thumb img{display:block;height:56px;width:auto;border-radius:8px;background:#12203a}
.thumb:hover:not(:disabled) img{box-shadow:0 0 0 1px #2c4a7c}
.thumb.selected img,.thumb[aria-current=true] img{box-shadow:0 0 0 2px #4da3ff}
.thumb-tile{display:grid;place-items:center;width:56px;height:56px;border-radius:8px;background:#1a2f55;color:#c6d6ee;font-size:11px;font-weight:650;letter-spacing:.06em}
#batch{flex:none;min-height:36px}

/* Narrow screens: the sidebar stacks below the editor */
@media (max-width:800px){
  .workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:auto;height:auto;min-height:100vh;overflow:visible}
  aside{order:2;overflow:visible;border-right:0;border-top:1px solid #1d3358}
  .editor{order:1;height:72vh;min-height:0}
  #filename,.dims{display:none}
  .topbar{grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:6px;padding:0 8px}
  .segmented label{padding:6px 10px}
  .actions{gap:4px}
  .icon-btn{width:34px;height:34px;min-height:34px}
  .mask-tools{left:50%;top:calc(100% + 8px);transform:translateX(-50%)}
  .status-chip{bottom:64px;max-width:calc(100% - 32px)}
  .snackbar{max-width:calc(100% - 32px)}
  .export-popover{width:280px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}