/* ===== تخطيط المرسم ===== */
.app{position:fixed;inset:0;display:grid;
  grid-template-columns:var(--rail-w) minmax(0,1fr) var(--panel-w);
  grid-template-rows:var(--top-h) minmax(0,1fr) var(--status-h);
  grid-template-areas:"top top top" "rail stage panel" "status status status"}
.app.focus{grid-template-columns:0 minmax(0,1fr) 0}
.app.focus .toolrail,.app.focus .panel{visibility:hidden}

/* الشريط العلوي */
.topbar{grid-area:top;display:flex;align-items:center;gap:14px;padding:0 14px;background:var(--panel);
  border-bottom:1px solid var(--line);position:relative;z-index:30}
.topbar::after{content:"";position:absolute;inset-inline:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold) 30%,var(--gold-hi) 50%,var(--gold) 70%,transparent);opacity:.45}
.doc-title{display:flex;align-items:center;gap:8px;min-width:0;flex:0 1 240px}
.doc-title input{height:34px;background:transparent;border-color:transparent;font-weight:600;font-size:14.5px;padding:0 10px}
.doc-title input:hover{border-color:var(--line2)}
.save-state{font-size:11.5px;color:var(--faint);white-space:nowrap}
.save-state.dirty{color:var(--warn)}
.top-actions{display:flex;align-items:center;gap:6px;margin-inline:auto;overflow-x:auto;scrollbar-width:none}
.top-actions::-webkit-scrollbar{display:none}
.grp{display:flex;align-items:center;gap:2px;padding:3px;border:1px solid var(--line2);border-radius:12px;background:var(--bg2)}
.zoom-lbl{min-width:58px;height:32px;border-radius:8px;font-size:12.5px;font-weight:600;color:var(--muted);direction:ltr;position:relative}
.zoom-lbl:hover{color:var(--gold);background:var(--hover)}
.top-end{display:flex;align-items:center;gap:4px}
.user-chip{display:flex;align-items:center;gap:9px;padding:4px 6px 4px 12px;border-radius:30px;border:1px solid var(--line2);margin-inline-start:6px;position:relative;transition:.18s}
.user-chip:hover{border-color:var(--gold-ring)}
.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:var(--gold-grad);color:var(--on-gold);font-weight:800;font-size:14px;flex:none}
.user-meta{display:flex;flex-direction:column;line-height:1.15;text-align:start}
.user-meta b{font-size:12.5px;font-weight:700;max-width:110px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user-meta small{font-size:10.5px;color:var(--gold)}
.show-md{display:none!important}

/* شريط الأدوات */
.toolrail{grid-area:rail;background:var(--panel);border-inline-end:1px solid var(--line2);display:flex;flex-direction:column;
  align-items:center;padding:10px 0;gap:8px;overflow-y:auto;overflow-x:hidden;z-index:20;scrollbar-width:none}
.toolrail::-webkit-scrollbar{display:none}
.tools{display:flex;flex-direction:column;gap:3px;align-items:center}
.tool-btn{width:44px;height:42px;border-radius:11px;display:grid;place-items:center;color:var(--muted);position:relative;transition:.16s;flex:none}
.tool-btn .ic{width:21px;height:21px}
.tool-btn:hover{color:var(--text);background:var(--hover)}
.tool-btn.on{color:var(--gold);background:var(--gold-soft);box-shadow:inset 0 0 0 1px var(--gold-ring)}
.tool-btn.on::before{content:"";position:absolute;inset-inline-start:-11px;top:10px;bottom:10px;width:3px;border-radius:3px;background:var(--gold-grad)}
.tool-sep{width:28px;height:1px;background:var(--line2);margin:4px 0;flex:none}
.toolrail [data-tip]:hover::after{top:50%;left:auto;right:calc(100% + 12px);transform:translateY(-50%);animation:tipFade .15s .3s both}
@keyframes tipFade{from{opacity:0}}
.rail-colors{position:relative;width:50px;height:58px;margin-top:auto;flex:none}
.chip{position:absolute;width:32px;height:32px;border-radius:9px;border:2px solid var(--panel);box-shadow:0 0 0 1px var(--line),var(--shadow-sm);
  background-image:linear-gradient(var(--c,#000),var(--c,#000)),conic-gradient(var(--checker-a) 25%,var(--checker-b) 0 50%,var(--checker-a) 0 75%,var(--checker-b) 0);background-size:auto,10px 10px}
.chip-p{top:0;right:2px;z-index:2}
.chip-s{bottom:0;left:2px}
.rail-colors .mini-btn{position:absolute;left:-2px;top:-4px;width:22px;height:22px}
.rail-colors .mini-btn .ic{width:14px;height:14px}

/* منطقة الرسم */
.stage{grid-area:stage;position:relative;overflow:hidden;background:
  radial-gradient(60% 60% at 50% 45%,var(--stage-glow),transparent 70%),var(--stage)}
.viewport{position:absolute;inset:0;touch-action:none;cursor:crosshair;outline:none}
.viewport.pan{cursor:grab}.viewport.panning{cursor:grabbing}
.viewport.nocur{cursor:none}
.viewport.pick{cursor:copy}.viewport.txt{cursor:text}.viewport.moving{cursor:move}
.doc{position:absolute;left:0;top:0;transform-origin:0 0;direction:ltr;isolation:isolate;
  box-shadow:0 30px 80px rgba(0,0,0,.45),0 0 0 1px var(--line);--z:1}
.doc canvas{position:absolute;left:0;top:0;width:100%;height:100%;display:block}
.doc.pixel canvas{image-rendering:pixelated}
.checker{position:absolute;inset:0;background:conic-gradient(var(--checker-a) 25%,var(--checker-b) 0 50%,var(--checker-a) 0 75%,var(--checker-b) 0);
  background-size:calc(20px / var(--z)) calc(20px / var(--z))}
.sel{position:absolute;z-index:9000;pointer-events:none;
  background-image:linear-gradient(90deg,#fff 50%,#000 50%),linear-gradient(90deg,#fff 50%,#000 50%),linear-gradient(0deg,#fff 50%,#000 50%),linear-gradient(0deg,#fff 50%,#000 50%);
  background-repeat:repeat-x,repeat-x,repeat-y,repeat-y;
  background-size:calc(10px / var(--z)) calc(1.2px / var(--z)),calc(10px / var(--z)) calc(1.2px / var(--z)),calc(1.2px / var(--z)) calc(10px / var(--z)),calc(1.2px / var(--z)) calc(10px / var(--z));
  background-position:0 0,0 100%,0 0,100% 0;animation:ants .7s linear infinite}
@keyframes ants{to{background-position:calc(10px / var(--z)) 0,calc(-10px / var(--z)) 100%,0 calc(-10px / var(--z)),100% calc(10px / var(--z))}}
.txt-ed{position:absolute;z-index:9500;min-width:6px;min-height:1em;white-space:pre;direction:rtl;text-align:right;line-height:1.5;
  transform:translateX(-100%);outline:calc(1.5px / var(--z)) dashed var(--gold);outline-offset:calc(4px / var(--z));padding:0;margin:0;caret-color:var(--gold)}
.bcur{position:absolute;left:0;top:0;pointer-events:none;z-index:50;border:1px solid rgba(255,255,255,.9);border-radius:50%;
  box-shadow:0 0 0 1px rgba(0,0,0,.55);transform:translate(-50%,-50%)}
.bcur::after{content:"";position:absolute;left:50%;top:50%;width:3px;height:3px;margin:-1.5px;border-radius:50%;background:#fff;box-shadow:0 0 0 1px #000}
.bcur.nib{border-radius:2px}
.stage-hint{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);background:var(--panel2);border:1px solid var(--line);
  padding:6px 14px;border-radius:20px;font-size:12px;color:var(--muted);pointer-events:none;opacity:0;transition:opacity .3s;white-space:nowrap}
.stage-hint.show{opacity:1}

/* اللوحة الجانبية */
.panel{grid-area:panel;background:var(--panel);border-inline-start:1px solid var(--line2);overflow-y:auto;overflow-x:hidden;z-index:20;position:relative}
.pane{border-bottom:1px solid var(--line2)}
.pane-h{display:flex;align-items:center;gap:9px;padding:12px 16px;cursor:pointer;user-select:none;position:sticky;top:0;background:var(--panel);z-index:2}
.pane-h .ic{width:17px;height:17px;color:var(--gold)}
.pane-h h3{margin:0;font-size:13.5px;font-weight:700;flex:1}
.pane-caret{width:8px;height:8px;border-left:1.6px solid var(--muted);border-bottom:1.6px solid var(--muted);transform:rotate(-45deg);transition:.2s;margin-top:-4px}
.pane.closed .pane-caret{transform:rotate(45deg);margin-top:0}
.pane.closed .pane-b{display:none}
.pane-b{padding:2px 16px 16px}
.sub-h{font-size:11.5px;color:var(--faint);margin:12px 0 6px}

/* منتقي الألوان */
.sv{position:relative;height:150px;border-radius:12px;overflow:hidden;cursor:crosshair;box-shadow:inset 0 0 0 1px var(--line2);touch-action:none}
.sv canvas{width:100%;height:100%;display:block}
.sv-knob{position:absolute;width:16px;height:16px;margin:-8px 0 0 -8px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.5),0 2px 6px rgba(0,0,0,.4);pointer-events:none}
.color-row{display:flex;gap:12px;align-items:center;margin-top:12px}
.cur-swatch{width:42px;height:42px;border-radius:11px;flex:none;overflow:hidden;box-shadow:0 0 0 1px var(--line);
  background:conic-gradient(var(--checker-a) 25%,var(--checker-b) 0 50%,var(--checker-a) 0 75%,var(--checker-b) 0);background-size:10px 10px}
.cur-swatch i{display:block;width:100%;height:100%}
.color-sliders{flex:1;display:flex;flex-direction:column;gap:8px}
.rng-hue::-webkit-slider-runnable-track{height:10px;border-radius:10px;background:linear-gradient(to left,red,#ff0,#0f0,#0ff,#00f,#f0f,red)!important}
.rng-hue::-moz-range-track{height:10px;border-radius:10px;background:linear-gradient(to left,red,#ff0,#0f0,#0ff,#00f,#f0f,red)!important}
.rng-alpha::-webkit-slider-runnable-track{height:10px;border-radius:10px;background:linear-gradient(to left,transparent,var(--cc,#000)),conic-gradient(var(--checker-a) 25%,var(--checker-b) 0 50%,var(--checker-a) 0 75%,var(--checker-b) 0) 0 0/8px 8px!important}
.rng-alpha::-moz-range-track{height:10px;border-radius:10px;background:linear-gradient(to left,transparent,var(--cc,#000))!important}
.rng-hue::-webkit-slider-thumb,.rng-alpha::-webkit-slider-thumb{margin-top:-3px;background:#fff;border-color:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.45),0 2px 5px rgba(0,0,0,.4)}
.hex-row{display:flex;align-items:center;gap:8px;margin-top:12px;font-size:12px;color:var(--muted)}
.hex-row input{height:32px;font-family:ui-monospace,Consolas,monospace;font-size:13px;text-transform:uppercase;flex:1}
.hex-row output{min-width:42px;color:var(--text);font-variant-numeric:tabular-nums}
.swatches{display:grid;grid-template-columns:repeat(12,1fr);gap:3px;margin-top:12px}
.swatches button{aspect-ratio:1;border-radius:4px;box-shadow:inset 0 0 0 1px rgba(0,0,0,.18);transition:transform .12s}
.swatches button:hover{transform:scale(1.25);z-index:1;box-shadow:0 0 0 2px var(--panel),0 0 0 3px var(--gold)}
.swatches.recent{margin-top:0;min-height:20px}

/* خصائص الأداة */
.presets{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}
.presets:empty{display:none}
.presets button{height:28px;padding:0 11px;border-radius:20px;border:1px solid var(--line2);font-size:12px;color:var(--muted);background:var(--bg2);transition:.15s}
.presets button:hover{color:var(--text);border-color:var(--line)}
.presets button.on{color:var(--on-gold);background:var(--gold-grad);border-color:transparent;font-weight:700}
.brush-preview{width:100%;height:66px;border-radius:12px;background:#f3eee3;box-shadow:inset 0 0 0 1px var(--line2);margin-bottom:10px;display:block}
.brush-preview.hide{display:none}
.ctls{display:flex;flex-direction:column;gap:7px}
.ctl{display:grid;grid-template-columns:74px 1fr 46px;align-items:center;gap:10px;font-size:12.5px}
.ctl>label{color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ctl>output,.ctl>.num{font-variant-numeric:tabular-nums;font-size:12px;text-align:center;color:var(--text);background:var(--bg2);
  border:1px solid var(--line2);border-radius:6px;height:24px;line-height:22px;padding:0;width:46px;direction:ltr}
.ctl>.num{-moz-appearance:textfield}
.ctl>.num::-webkit-inner-spin-button{display:none}
.ctl select{height:32px;font-size:13px;grid-column:2 / 4}
.ctl.wide{grid-template-columns:74px 1fr}
.ctl.check-row{grid-template-columns:1fr}
.ctl-angle{display:grid;grid-template-columns:74px 1fr 46px;align-items:center;gap:10px;font-size:12.5px}
.ctl-angle label{color:var(--muted)}
.ctl-angle .angle-wrap{display:flex;align-items:center;gap:10px}
.dial{width:38px;height:38px;border-radius:50%;flex:none;position:relative;cursor:grab;touch-action:none;background:var(--bg2);
  box-shadow:inset 0 0 0 1px var(--line),0 1px 0 rgba(255,255,255,.04)}
.dial i{position:absolute;left:50%;top:50%;width:16px;height:2px;margin-top:-1px;background:var(--gold);border-radius:2px;transform-origin:0 50%}
.dial::after{content:"";position:absolute;left:50%;top:50%;width:6px;height:6px;margin:-3px;border-radius:50%;background:var(--gold)}
.btn-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.btn-row .btn{flex:1 1 auto}
.font-prev{font-size:26px;text-align:center;padding:8px;border-radius:10px;background:var(--bg2);border:1px solid var(--line2);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.6}
.note{font-size:12px;color:var(--muted);background:var(--bg2);border:1px dashed var(--line);border-radius:10px;padding:8px 10px;margin:0}

/* الضغط */
.pressure-wrap{display:flex;gap:12px;align-items:center;margin-bottom:12px}
.gauge{position:relative;width:104px;height:104px;flex:none}
.gauge svg{width:100%;height:100%;transform:rotate(-90deg)}
.g-track{fill:none;stroke:var(--panel3);stroke-width:9}
.g-val{fill:none;stroke:url(#goldGrad);stroke-width:9;stroke-linecap:round;stroke-dasharray:314.16;stroke-dashoffset:314.16;transition:stroke-dashoffset .08s linear}
.g-read{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.g-read b{font-size:21px;font-weight:800;direction:ltr;font-variant-numeric:tabular-nums}
.g-read small{font-size:10.5px;color:var(--muted)}
.curve{flex:1;min-width:0;aspect-ratio:1;max-width:120px;border-radius:12px;background:var(--bg2);box-shadow:inset 0 0 0 1px var(--line2)}
.ptest{position:relative;height:88px;margin-top:12px;border-radius:12px;border:1px dashed var(--line);display:grid;place-items:center;
  color:var(--faint);font-size:12px;touch-action:none;overflow:hidden;cursor:crosshair;background:var(--bg2)}
.ptest canvas{position:absolute;inset:0;width:100%;height:100%}
.ptest span{pointer-events:none;transition:opacity .3s}
.ptest.used span{opacity:0}

/* الطبقات */
.layer-tools{display:flex;gap:2px;justify-content:space-between;padding:4px;border:1px solid var(--line2);border-radius:10px;background:var(--bg2);margin-bottom:10px}
.layer-props{display:flex;flex-direction:column;gap:7px;margin-bottom:10px}
.layers{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:5px}
.layer{display:flex;align-items:center;gap:9px;padding:6px 8px;border-radius:11px;border:1px solid var(--line2);background:var(--bg2);cursor:pointer;transition:.15s;user-select:none}
.layer:hover{border-color:var(--line)}
.layer.on{border-color:var(--gold-ring);background:var(--gold-soft)}
.layer.hidden-l{opacity:.55}
.layer canvas{width:46px;height:34px;border-radius:6px;flex:none;box-shadow:0 0 0 1px var(--line2);
  background:conic-gradient(var(--checker-a) 25%,var(--checker-b) 0 50%,var(--checker-a) 0 75%,var(--checker-b) 0) 0 0/8px 8px}
.layer .lname{flex:1;min-width:0;font-size:12.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.layer .lname input{height:26px;font-size:12.5px;padding:0 6px}
.layer .lmeta{font-size:10.5px;color:var(--faint);direction:ltr}
.layer .mini-btn{width:26px;height:26px}

/* شريط الحالة */
.statusbar{grid-area:status;display:flex;align-items:center;gap:16px;padding:0 14px;background:var(--panel);border-top:1px solid var(--line2);
  font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;font-variant-numeric:tabular-nums}
.statusbar>span{display:flex;align-items:center;gap:6px}
.st-grow{flex:1}
.st-meter{width:70px;height:5px;border-radius:5px;background:var(--panel3);overflow:hidden;display:block}
.st-meter b{display:block;height:100%;width:0;background:var(--gold-grad);transition:width .06s linear}
.st-press em{font-style:normal;min-width:32px}
.st-mark{color:var(--gold);opacity:.8;letter-spacing:.3px}
.scrim{display:none}

/* ===== استجابة الشاشات ===== */
@media (min-width:1600px){:root{--panel-w:340px}}
@media (max-width:1280px){
  .brand-tag,.user-meta{display:none}
  .doc-title{flex-basis:170px}
}
@media (max-width:1100px){
  :root{--panel-w:290px}
  .grp-zoom{display:none}
  .doc-title{display:none}
}
@media (max-width:900px){
  :root{--top-h:54px;--status-h:26px}
  .app{grid-template-columns:minmax(0,1fr);grid-template-rows:var(--top-h) minmax(0,1fr) 60px var(--status-h);
    grid-template-areas:"top" "stage" "rail" "status"}
  .app.focus{grid-template-columns:minmax(0,1fr);grid-template-rows:var(--top-h) minmax(0,1fr) 0 var(--status-h)}
  .show-md{display:inline-grid!important}
  .hide-sm{display:none!important}
  .topbar{gap:6px;padding:0 8px}
  .brand-name{font-size:21px}.brand-mark{width:24px;height:24px}
  .top-actions{margin-inline:auto 0}
  .grp{border:0;background:none;padding:0}
  .icon-btn{width:34px;height:34px}
  .user-chip{padding:2px;border:0;margin:0}
  .toolrail{flex-direction:row;border:0;border-top:1px solid var(--line2);padding:0 10px;overflow-x:auto;overflow-y:hidden;gap:6px}
  .tools{flex-direction:row}
  .tool-sep{width:1px;height:26px;margin:0 3px}
  .tool-btn.on::before{inset-inline-start:10px;inset-inline-end:10px;top:auto;bottom:-6px;width:auto;height:3px}
  .rail-colors{margin:0;margin-inline-start:auto;height:48px;width:50px}
  .toolrail [data-tip]:hover::after{display:none}
  .panel{position:fixed;top:0;bottom:0;left:0;width:min(340px,88vw);transform:translateX(-102%);transition:transform .3s var(--ease);
    z-index:60;box-shadow:var(--shadow);border:0;padding-top:46px}
  .app.panel-open .panel{transform:none}
  .panel-close{position:absolute;top:6px;right:8px;z-index:5}
  .app.panel-open .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:55}
  .statusbar{gap:10px;padding:0 10px}
  #stPos{display:none}
  [data-tip]:hover::after{display:none}
}
@media (max-width:520px){
  .brand-name{display:none}
  #btnDash{display:none}
  .topbar{gap:2px;padding:0 4px}
  .top-end,.grp{gap:0}
  .icon-btn{width:31px;height:34px}
  .icon-btn .ic{width:19px;height:19px}
  .avatar{width:28px;height:28px}
  .statusbar #stTool{display:none}
}
@media (pointer:coarse){
  .tool-btn{width:46px;height:46px}
  input[type=range]{height:26px}
}