:root{
  color-scheme: dark;
  --bg:#181818;
  --bg2:#202020;
  --bg3:#252525;
  --panel:#2a2a2a;
  --panel2:#313131;
  --panel3:#383838;
  --line:#454545;
  --line2:#5a5a5a;
  --text:#e6e6e6;
  --muted:#adadad;
  --soft:#888;
  --accent:#38bdf8;
  --accent2:#79dcff;
  --danger:#f56565;
  --ok:#2fbf71;
  --shadow:0 18px 48px rgba(0,0,0,.36);
  --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Consolas,Menlo,monospace;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:linear-gradient(180deg,#0f141c 0%, #1a1a1a 18%, #1a1a1a 100%);color:var(--text);font-family:var(--font);overflow:hidden}
button,input,select{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#232323}
::-webkit-scrollbar-thumb{background:#4a4a4a;border-radius:999px;border:2px solid #232323}
.app-shell{height:100vh;display:grid;grid-template-rows:36px 40px 36px minmax(0,1fr) 24px}
.topbar,.optionsbar,.doctabs,.statusbar{min-width:0}
.topbar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:0 10px;background:linear-gradient(180deg,#06142d,#121212);border-bottom:1px solid #111}
.brand-lockup{display:flex;align-items:center;gap:10px;min-width:0}
.brand-badge{width:22px;height:22px;border:1px solid rgba(56,189,248,.7);display:grid;place-items:center;background:linear-gradient(180deg,rgba(56,189,248,.22),rgba(56,189,248,.06));color:#9fe8ff;font-weight:700;font-size:13px}
.brand-copy{display:flex;flex-direction:column;line-height:1.05}
.brand-copy strong{font-size:12px;font-weight:700;white-space:nowrap}
.brand-copy span{font-size:10px;color:#7fb8cf;letter-spacing:.08em;text-transform:uppercase}
.app-menu{display:flex;align-items:center;gap:2px;justify-content:center;min-width:0;overflow:auto}
.menu-btn,.chrome-btn,.action-btn,.small-btn,.adjust-btn{appearance:none;background:#3a3a3a;border:1px solid #555;color:var(--text)}
.menu-btn{background:transparent;border-color:transparent;padding:6px 10px;border-radius:4px;font-size:12px;color:#dfdfdf}
.menu-btn:hover{background:#2d2d2d;border-color:#4d4d4d}
.topbar-actions{display:flex;gap:6px}
.chrome-btn{padding:5px 10px;border-radius:5px;font-size:12px;background:#262626}
.chrome-btn:hover,.action-btn:hover,.small-btn:hover,.adjust-btn:hover{border-color:#6ecdf0;box-shadow:0 0 0 1px rgba(56,189,248,.08)}
.optionsbar{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;padding:0 10px;background:#2c2c2c;border-bottom:1px solid #191919}
.option-group{display:flex;align-items:center;gap:8px;min-width:0}
.tool-settings{justify-content:center;overflow:auto}
.tool-settings label,.compact-ops label{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);white-space:nowrap}
.tool-settings input[type="range"]{width:120px}
.tool-settings input[type="color"]{width:32px;height:24px;padding:2px;border-radius:4px;border:1px solid #5d5d5d;background:#181818}
.option-group.compact-ops input[type="range"]{width:160px}
.action-btn{padding:6px 12px;border-radius:6px;font-size:12px;background:#313131}
.action-btn.small,.small-btn{padding:5px 9px;border-radius:5px;font-size:11px;background:#353535}
.action-btn.primary{background:linear-gradient(180deg,rgba(56,189,248,.22),rgba(56,189,248,.08));border-color:rgba(56,189,248,.65)}
.zoom-pill{padding:4px 8px;border:1px solid #5d5d5d;background:#1f1f1f;border-radius:5px;font-family:var(--mono);font-size:11px;color:#b8ebff}
.doctabs{display:flex;align-items:end;gap:1px;padding:0 8px;background:#292929;border-bottom:1px solid #171717;overflow:auto}
.doc-tab{height:31px;padding:0 14px;border:none;border-right:1px solid #1f1f1f;background:#333;color:#cacaca;font-size:12px;border-top-left-radius:6px;border-top-right-radius:6px;white-space:nowrap}
.doc-tab.active{background:#262626;color:#f4f4f4;box-shadow:inset 0 2px 0 0 rgba(56,189,248,.7)}
.doc-tab.ghost{color:#757575;background:#303030}
.workspace{min-height:0;display:grid;grid-template-columns:60px minmax(0,1fr) 360px;gap:10px;padding:10px;background:linear-gradient(180deg,#222,#1d1d1d);overflow:hidden}
.toolbar,.stage-shell,.dock{min-height:0}
.toolbar{display:flex;flex-direction:column;gap:6px;background:#2a2a2a;border:1px solid #444;box-shadow:var(--shadow);padding:6px;overflow:auto}
.tool{width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:48px;border-radius:5px;border:1px solid #4b4b4b;background:#313131;color:#d2d2d2;padding:0}
.tool:hover{background:#353535}
.tool.active{border-color:rgba(56,189,248,.72);background:linear-gradient(180deg,rgba(56,189,248,.18),rgba(56,189,248,.04));color:#eafaff}
.tool.disabled{opacity:.45}
.tool-icon{font-size:16px;line-height:1}
.tool-label{font-size:9px;letter-spacing:.04em;text-transform:uppercase}
.toolbar-divider{height:1px;background:#4b4b4b;margin:3px 0}
.stage-shell{display:grid;grid-template-rows:35px minmax(0,1fr) 84px;border:1px solid #444;background:#252525;box-shadow:var(--shadow);overflow:hidden}
.stage-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:0 10px;background:#2d2d2d;border-bottom:1px solid #414141;min-width:0}
.stage-metrics,.stage-actions{display:flex;align-items:center;gap:8px;min-width:0;overflow:auto;white-space:nowrap}
.stage-metrics{font-size:12px;color:#cfcfcf}
.sep{width:1px;height:14px;background:#525252;display:inline-block}
.stage-viewport{min-height:0;overflow:auto;background:radial-gradient(circle at center,rgba(56,189,248,.05),transparent 45%), #1f1f1f;display:flex;align-items:center;justify-content:center;padding:24px}
.canvas-well{position:relative;padding:24px 0 0 24px}
.ruler{position:absolute;background:#2f2f2f;border:1px solid #484848}
.ruler-x{left:24px;right:0;top:0;height:22px;background-image:repeating-linear-gradient(90deg,rgba(200,200,200,.2) 0 1px,transparent 1px 50px)}
.ruler-y{left:0;top:24px;bottom:0;width:22px;background-image:repeating-linear-gradient(0deg,rgba(200,200,200,.2) 0 1px,transparent 1px 50px)}
.canvas-stack{position:relative;display:block;transform-origin:top left;border:1px solid #5b5b5b;box-shadow:0 12px 36px rgba(0,0,0,.45);background:#161616;background-image:linear-gradient(45deg,rgba(255,255,255,.04) 25%,transparent 25%),linear-gradient(-45deg,rgba(255,255,255,.04) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,rgba(255,255,255,.04) 75%),linear-gradient(-45deg,transparent 75%,rgba(255,255,255,.04) 75%);background-size:18px 18px;background-position:0 0,0 9px,9px -9px,-9px 0}
canvas{display:block}
#overlayCanvas{position:absolute;inset:0;touch-action:none;cursor:crosshair}
.timeline-bar{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:12px;padding:8px 10px;border-top:1px solid #414141;background:#2b2b2b;overflow:hidden}
.timeline-labels{display:flex;flex-direction:column;gap:2px;white-space:nowrap}
.timeline-labels strong{font-size:12px}
.timeline-labels span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.timeline-strip{display:flex;align-items:center;gap:8px;overflow:auto}
.frame{padding:7px 11px;border:1px solid #5d5d5d;border-radius:5px;background:#353535;color:#e1e1e1}
.frame.current{border-color:rgba(56,189,248,.72);background:rgba(56,189,248,.12)}
.frame.planned{opacity:.45}
.timeline-note{font-size:11px;color:#b1b1b1;white-space:nowrap}
.dock{min-height:0;display:grid;grid-template-rows:290px 170px 168px minmax(180px,1fr);gap:10px;overflow:hidden}
.dock-panel{display:flex;flex-direction:column;min-height:0;border:1px solid #444;background:#2a2a2a;box-shadow:var(--shadow)}
.dock-head{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:8px 10px;background:#303030;border-bottom:1px solid #444;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#d9d9d9}
.dock-meta{color:#9ecae3;font-size:10px}
.dock-body{min-height:0;overflow:auto;padding:10px}
.form-grid{display:grid;gap:10px}
.form-grid label,.dialog-grid label{display:grid;gap:5px;font-size:11px;color:#c8c8c8}
input,select{width:100%;padding:7px 8px;border-radius:4px;border:1px solid #5b5b5b;background:#1f1f1f;color:#efefef}
input[type="color"]{padding:2px;height:32px}
input[type="range"]{padding:0;background:transparent;border:none}
.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.checkbox-line{display:flex !important;align-items:center;gap:7px}
.checkbox-line input{width:auto}
.palette-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:6px}
.palette-swatch{height:24px;border-radius:4px;border:1px solid rgba(255,255,255,.14)}
.palette-swatch.active{outline:2px solid rgba(56,189,248,.85)}
.adjust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.adjust-btn{padding:9px 8px;border-radius:5px;font-size:11px;background:#343434}
.adjust-btn.planned{opacity:.45}
.tabs-lite{justify-content:flex-start;gap:16px}
.tab-lite{opacity:.48}
.tab-lite.active{opacity:1;color:#f4f4f4}
.layers-body{display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:10px;min-height:0}
.layer-toolbar{display:flex;flex-wrap:wrap;gap:6px}
.layers-list{display:grid;gap:6px;align-content:start}
.layer-item{display:grid;grid-template-columns:auto auto 1fr auto;align-items:center;gap:8px;padding:8px;border:1px solid #505050;background:#323232;border-radius:5px}
.layer-item.active{border-color:rgba(56,189,248,.72);background:rgba(56,189,248,.08)}
.layer-toggle,.layer-lock{width:22px;height:22px;border:1px solid #606060;border-radius:4px;background:#272727;color:#dcdcdc;font-size:11px;display:grid;place-items:center}
.layer-name{font-size:12px;font-weight:600}
.layer-mode{font-size:10px;color:#a6a6a6;white-space:nowrap}
.selection-foot{font-size:11px;color:#c8c8c8;background:#262626;border:1px solid #434343;padding:8px;border-radius:4px}
.statusbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 10px;background:#131313;border-top:1px solid #050505;color:#b9b9b9;font-size:11px;white-space:nowrap;overflow:hidden}
.studio-dialog{width:min(640px,calc(100vw - 40px));border:none;padding:0;background:#272727;color:#ededed;box-shadow:0 24px 80px rgba(0,0,0,.55)}
.studio-dialog::backdrop{background:rgba(0,0,0,.55)}
.studio-dialog form{display:grid;grid-template-rows:auto 1fr auto;max-height:min(78vh,700px)}
.studio-dialog header,.studio-dialog footer{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;background:#323232;border-bottom:1px solid #444}
.studio-dialog footer{border-top:1px solid #444;border-bottom:none}
.studio-dialog h2{margin:0 0 4px;font-size:18px}
.studio-dialog p{margin:0;color:#bcbcbc;font-size:12px}
.dialog-grid,.roadmap-list{padding:16px;overflow:auto;display:grid;gap:12px}
.small-roadmap{width:min(760px,calc(100vw - 40px))}
.roadmap-item{display:grid;gap:5px;padding:12px;border:1px solid #4a4a4a;background:#303030;border-radius:6px}
.roadmap-item strong{color:#a5e6ff}
.toast-stack{position:fixed;right:14px;bottom:34px;display:grid;gap:8px;z-index:50}
.toast{min-width:240px;max-width:320px;padding:10px 12px;background:#212121;border:1px solid #5a5a5a;box-shadow:var(--shadow);border-left:4px solid var(--accent);font-size:12px}
.toast small{display:block;margin-top:3px;color:#bdbdbd}
@media (max-width: 1300px){
  .workspace{grid-template-columns:60px minmax(0,1fr) 320px}
  .dock{grid-template-rows:270px 160px 160px minmax(160px,1fr)}
}

/* Phase 2 - Selection Core additions */
.dock{grid-template-rows:248px 140px 178px 142px minmax(160px,1fr)}
.selection-core{display:grid;gap:9px;align-content:start}
.selection-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.selection-help{font-size:10.5px;line-height:1.35;color:#b8c7d1;background:#262626;border:1px solid #434343;border-radius:4px;padding:8px}
.selection-panel .dock-head{box-shadow:inset 3px 0 0 rgba(56,189,248,.65)}
.tool[data-tool="lasso"],.tool[data-tool="polygon"],.tool[data-tool="magnetic"],.tool[data-tool="magic"]{border-color:#515f66}
.tool[data-tool="lasso"].active,.tool[data-tool="polygon"].active,.tool[data-tool="magnetic"].active,.tool[data-tool="magic"].active{border-color:#79dcff;background:linear-gradient(180deg,rgba(56,189,248,.24),rgba(56,189,248,.06));}
@media (max-height: 860px){
  .dock{grid-template-rows:220px 118px 160px 125px minmax(140px,1fr)}
  .selection-help{display:none}
  .tool{height:44px}
}

/* Phase 3 - Layer System Pro + New File Presets */
html[data-phase="4-corrections-imaging"] .brand-badge{background:linear-gradient(180deg,rgba(56,189,248,.34),rgba(245,158,11,.08));}
.toolbar,
.dock-body,
.layers-list,
.stage-viewport,
.timeline-strip,
.preset-browser,
.preset-grid,
.preset-sidebar,
.app-menu,
.tool-settings,
.stage-metrics,
.stage-actions{
  scrollbar-width:thin;
  scrollbar-color:#4a4a4a #232323;
}
.toolbar{gap:5px;overflow-y:auto;overflow-x:hidden;padding-right:5px;}
.tool{height:42px;min-height:42px;}
.tool.staged{opacity:.55;border-style:dashed;}
.tool.staged:hover{opacity:.86;}
.tool-group-label{font-size:8.5px;line-height:1;color:#94a3ad;text-transform:uppercase;letter-spacing:.12em;text-align:center;padding:3px 0 0;position:sticky;top:0;background:#2a2a2a;z-index:1;}
.workspace{grid-template-columns:64px minmax(0,1fr) 376px;}
.dock{grid-template-rows:220px 120px 154px 190px 138px minmax(190px,1fr);gap:8px;overflow:hidden;}
.properties-panel .dock-body{padding-bottom:16px;}
.layer-type-chip{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#a5e6ff;border:1px solid rgba(56,189,248,.32);background:rgba(56,189,248,.07);border-radius:5px;padding:7px 8px;}
.layer-pro-body{display:grid;gap:8px;align-content:start;}
.layer-pro-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;}
.mask-controls,.fx-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;font-size:11px;background:#262626;border:1px solid #434343;border-radius:5px;padding:8px;}
.fx-grid label:last-child{grid-column:1 / -1;}
.layer-pro-note{font-size:10.5px;line-height:1.35;color:#b8c7d1;background:#202020;border:1px solid #414141;border-radius:5px;padding:7px;}
.layers-list{overflow-y:auto;min-height:0;padding-right:2px;}
.layer-item.dense{grid-template-columns:auto auto 18px minmax(0,1fr) auto;padding:6px 7px;gap:6px;}
.layer-item.group{background:linear-gradient(180deg,#3a3428,#302d27);border-color:#6d5a32;}
.layer-item.adjustment{background:linear-gradient(180deg,#2f3440,#2b2d35);border-color:#546170;}
.layer-item.clipped{box-shadow:inset 3px 0 0 rgba(121,220,255,.75);}
.layer-icon{width:18px;height:18px;border:1px solid #555;border-radius:4px;background:#252525;display:grid;place-items:center;font-size:11px;color:#e2f7ff;}
.layer-item .layer-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.layer-item .layer-mode{overflow:hidden;text-overflow:ellipsis;max-width:180px;}
.layer-pro-panel .dock-head{box-shadow:inset 3px 0 0 rgba(245,158,11,.68);}
.layers-panel .dock-head{box-shadow:inset 3px 0 0 rgba(56,189,248,.68);}
.new-file-dialog{width:min(980px,calc(100vw - 42px));}
.new-file-dialog form{max-height:min(86vh,820px);}
.new-file-layout{display:grid;grid-template-columns:150px minmax(0,1fr);min-height:0;overflow:hidden;}
.preset-sidebar{display:flex;flex-direction:column;gap:7px;padding:14px;background:#202020;border-right:1px solid #444;overflow-y:auto;}
.preset-filter{appearance:none;text-align:left;padding:9px 10px;border-radius:6px;border:1px solid #444;background:#2f2f2f;color:#d6d6d6;font-size:12px;}
.preset-filter.active,.preset-filter:hover{border-color:rgba(56,189,248,.72);background:rgba(56,189,248,.1);color:#f4fbff;}
.preset-browser{min-height:0;overflow:auto;padding:14px;display:grid;gap:14px;}
.preset-grid{display:grid;grid-template-columns:repeat(3,minmax(150px,1fr));gap:10px;max-height:270px;overflow-y:auto;padding-right:3px;}
.preset-card{appearance:none;text-align:left;display:grid;gap:7px;min-height:74px;padding:11px;border:1px solid #4c4c4c;background:linear-gradient(180deg,#343434,#292929);color:#e5e5e5;border-radius:8px;}
.preset-card strong{font-size:12px;color:#f0f6fa;}
.preset-card span{font-size:11px;color:#adc1cd;font-family:var(--mono);}
.preset-card.active,.preset-card:hover{border-color:rgba(56,189,248,.85);background:linear-gradient(180deg,rgba(56,189,248,.18),rgba(56,189,248,.05));}
.compact-new-file{padding:0;grid-template-columns:1fr;}
.hidden-select{display:none !important;}
.start-options{display:grid;grid-template-columns:1fr 1fr;gap:10px;background:#222;border:1px solid #414141;border-radius:6px;padding:9px;}
@media (max-height: 900px){
  .dock{grid-template-rows:188px 104px 140px 164px 120px minmax(150px,1fr);}
  .tool{height:38px;min-height:38px;}
  .tool-label{font-size:8px;}
  .selection-help,.layer-pro-note{display:none;}
}
@media (max-width: 1400px){
  .workspace{grid-template-columns:62px minmax(0,1fr) 340px;}
  .dock{grid-template-rows:190px 110px 144px 168px 130px minmax(170px,1fr);}
  .preset-grid{grid-template-columns:repeat(2,minmax(140px,1fr));}
}


/* Phase 4 - canvas viewport hotfix + Corrections and Imaging */
html[data-phase="4-corrections-imaging"] .brand-badge{background:linear-gradient(180deg,rgba(56,189,248,.34),rgba(47,191,113,.1));}
.stage-viewport{align-items:flex-start;justify-content:flex-start;overscroll-behavior:contain;}
.canvas-well{min-width:max-content;min-height:max-content;}
.canvas-stack{transform:none !important;isolation:isolate;background-color:#161616;}
#paintCanvas,#overlayCanvas{width:100%;height:100%;image-rendering:auto;}
#paintCanvas{position:relative;z-index:1;background:transparent;}
#overlayCanvas{z-index:2;}
.imaging-panel .dock-head{box-shadow:inset 3px 0 0 rgba(47,191,113,.74);}
.imaging-body{display:grid;gap:8px;align-content:start;overflow-y:auto;}
.histogram-canvas{width:100%;height:72px;border:1px solid #444;border-radius:6px;background:linear-gradient(180deg,#181818,#111);}
.correction-mode-row{display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:6px;}
.correction-controls{display:grid;gap:7px;padding-right:2px;}
.correction-controls label{display:grid;grid-template-columns:84px minmax(0,1fr) 38px;align-items:center;gap:7px;font-size:10.5px;color:#cbd5df;}
.correction-controls output{font-family:var(--mono);font-size:10px;color:#9fe8ff;text-align:right;}
.quick-corrections{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;padding-top:4px;border-top:1px solid #444;}
.quick-corrections .adjust-btn{min-height:30px;padding:7px 6px;}
.dock{grid-template-rows:188px 106px 136px 166px minmax(290px,1.2fr) minmax(172px,.9fr);}
@media (max-height: 900px){
  .dock{grid-template-rows:160px 92px 120px 138px minmax(250px,1.1fr) minmax(145px,.8fr);}
  .correction-controls label{grid-template-columns:72px minmax(0,1fr) 34px;font-size:10px;}
  .histogram-canvas{height:58px;}
}