*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0e0f11;--surface:#16181c;--surface2:#1e2128;
  --border:#2a2d35;--border2:#353940;
  --accent:#4fffb0;--accent2:#00c8ff;--accent3:#ff6b6b;--accent4:#ffb84f;
  --text:#e8eaf0;--text2:#8b8fa8;--text3:#555870;
}
html,body{height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:'Space Grotesk',sans-serif;font-size:13px}
/* ============ HEADER ============ */
#hdr{
  display:flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 14px;
  background:var(--surface);
  border-bottom:1px solid var(--border);
  position:fixed;
  top:0;left:0;right:0;
  z-index:1000;
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:none; /* Firefox */
}
#hdr::-webkit-scrollbar{display:none;} /* Chrome/Safari */
#hdr .btn,
#hdr .btn-grp,
#hdr .btn-export,
#hdr .zoom-ctrl,
#hdr .sep,
#hdr .logo{
  flex-shrink:0;
}
.logo{font-family:'DM Mono',monospace;font-size:15px;font-weight:500;letter-spacing:0.5px;user-select:none}
.logo span.g{color:var(--accent)}.logo span.f{color:var(--text3)}
.sep{width:1px;height:24px;background:var(--border);margin:0 4px}
.btn{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:5px;border:1px solid var(--border2);background:var(--surface2);color:var(--text2);cursor:pointer;font-family:'Space Grotesk',sans-serif;font-size:12px;font-weight:500;transition:all .15s;white-space:nowrap;user-select:none}
.btn:hover{border-color:var(--border);color:var(--text);background:#252830}
.btn.active,.btn:active{background:rgba(79,255,176,.12);border-color:var(--accent);color:var(--accent)}
.btn-grp{display:flex;gap:2px}
.btn-grp .btn{border-radius:3px}
.spacer{
  flex:1;
  min-width:12px; /* collapses to this on small screens */
}
.zoom-ctrl{display:flex;align-items:center;gap:4px}
.zoom-val{font-family:'DM Mono',monospace;font-size:12px;color:var(--text2);min-width:42px;text-align:center}
.btn-export{padding:5px 16px;background:var(--accent);color:#0e0f11;border:none;border-radius:6px;font-weight:600;font-size:12px;cursor:pointer;font-family:'Space Grotesk',sans-serif;transition:all .15s}
.btn-export:hover{background:#5affc0;transform:translateY(-1px)}
/* ============ LAYOUT ============ */
#app{display:flex;position:fixed;top:48px;bottom:24px;left:0;right:0}
/* ============ PANELS ============ */
.panel{width:272px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}
#rp{border-right:none;border-left:1px solid var(--border)}
.panel-scroll{flex:1;overflow-y:auto;overflow-x:hidden}
.panel-scroll::-webkit-scrollbar{width:4px}.panel-scroll::-webkit-scrollbar-track{background:transparent}.panel-scroll::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}
.pnl-sec{border-bottom:1px solid var(--border)}
.pnl-hd{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;cursor:pointer;user-select:none;font-size:11px;font-weight:600;letter-spacing:0.8px;text-transform:uppercase;color:var(--text3)}
.pnl-hd:hover{color:var(--text2)}
.pnl-hd .hd-ico{display:flex;align-items:center;gap:6px}
.pnl-hd .chev{font-size:10px;transition:transform .2s;color:var(--text3)}
.pnl-body{padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.pnl-body.collapsed{display:none}
/* ============ ELEMENTS PALETTE ============ */
.pal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}
.pal-card{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 6px;border-radius:6px;border:1px solid var(--border2);background:var(--surface2);cursor:grab;user-select:none;transition:all .15s}
.pal-card:hover{border-color:var(--accent);background:rgba(79,255,176,.06);color:var(--accent)}
.pal-card:active{cursor:grabbing}
.pal-card svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5}
.pal-card span{font-size:10px;font-weight:600;letter-spacing:0.4px;color:inherit}
/* ============ FORM ELEMENTS ============ */
.field{display:flex;flex-direction:column;gap:3px}
.field-row{display:flex;align-items:center;gap:6px}
.field-row label{font-family:'DM Mono',monospace;font-size:10px;color:var(--text3);white-space:nowrap;flex-shrink:0;min-width:50px}
label.lbl{font-family:'DM Mono',monospace;font-size:10px;color:var(--text3);display:block;margin-bottom:3px}
input[type=text],input[type=number],textarea,select{background:var(--surface2);border:1px solid var(--border);border-radius:4px;color:var(--text);font-family:'DM Mono',monospace;font-size:11px;padding:5px 8px;width:100%;outline:none;transition:border-color .15s}
input[type=text]:focus,input[type=number]:focus,textarea:focus,select:focus{border-color:var(--accent2)}
select option{background:var(--surface2)}
input[type=number]{appearance:textfield}
input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none}
input[type=color]{width:32px;height:28px;border:1px solid var(--border);border-radius:4px;background:none;cursor:pointer;padding:2px}
textarea{resize:vertical;min-height:60px;font-family:'Space Grotesk',sans-serif;font-size:12px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.row4{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:4px}
.chk-row{display:flex;align-items:center;gap:6px;cursor:pointer;user-select:none}
.chk-row input{accent-color:var(--accent)}
.chk-row span{font-size:11px;color:var(--text2)}
/* ============ BUTTON GROUPS IN PANEL ============ */
.btn-seg{display:flex;gap:1px}
.btn-seg .bsb{flex:1;padding:5px 4px;border:1px solid var(--border2);background:var(--surface2);color:var(--text2);cursor:pointer;font-size:11px;transition:all .15s;text-align:center}
.btn-seg .bsb:first-child{border-radius:4px 0 0 4px}
.btn-seg .bsb:last-child{border-radius:0 4px 4px 0}
.btn-seg .bsb:hover{background:#252830;color:var(--text)}
.btn-seg .bsb.active{background:rgba(79,255,176,.12);border-color:var(--accent);color:var(--accent)}
/* ============ CANVAS ============ */
#canvas{flex:1;overflow:auto;position:relative;background:var(--bg);}
#canvas::-webkit-scrollbar{width:8px;height:8px}
#canvas::-webkit-scrollbar-track{background:var(--bg)}
#canvas::-webkit-scrollbar-thumb{background:var(--border2);border-radius:4px}
#scaler{transform-origin:top center;transition:transform .05s}
#pages-wrap{display:flex;flex-direction:column;align-items:center;padding:40px 60px;gap:28px;min-height:100%}
/* ============ PAGE ============ */
.pw{position:relative;background:#fff;box-shadow:0 4px 40px rgba(0,0,0,.6);flex-shrink:0}
.pw.active-pg{outline:2px solid var(--accent);outline-offset:3px}
.pg-badge{position:absolute;top:-24px;left:0;display:flex;align-items:center;gap:4px;font-family:'DM Mono',monospace;font-size:10px;color:var(--text3)}
.pg-badge .pg-num{color:var(--text2)}
.pg-badge button{background:none;border:none;color:var(--text3);cursor:pointer;font-size:12px;padding:0 3px;line-height:1;transition:color .15s}
.pg-badge button:hover{color:var(--accent)}
.mg-overlay{position:absolute;inset:0;pointer-events:none;z-index:5;}
/* ============ ELEMENTS ON PAGE ============ */
.ce{
  position:absolute;
  z-index:10; /* base, overridden by refreshZIndex */
  isolation:isolate; /* establishes stacking context per element */
}
.gz{position:absolute;inset:-7px;z-index:24;cursor:move;background:transparent}
.cc{position:absolute;inset:0;overflow:hidden;z-index:26}
.er{position:absolute;inset:-2px;border:2px solid transparent;border-radius:1px;pointer-events:none;z-index:28;transition:border-color .1s}
.ce:hover>.er{border-color:rgba(79,255,176,.4)}
.ce.selected>.er{border-color:var(--accent)}
.ce.selected-cell>.er{border-color:var(--accent2)}
/* resize handles */
.rh{position:absolute;width:8px;height:8px;background:var(--accent);border:1px solid var(--bg);border-radius:2px;z-index:30;display:none}
.ce.selected .rh{display:block}
.rh-nw{top:-4px;left:-4px;cursor:nw-resize}.rh-n{top:-4px;left:calc(50% - 4px);cursor:n-resize}.rh-ne{top:-4px;right:-4px;cursor:ne-resize}
.rh-e{top:calc(50% - 4px);right:-4px;cursor:e-resize}.rh-se{bottom:-4px;right:-4px;cursor:se-resize}.rh-s{bottom:-4px;left:calc(50% - 4px);cursor:s-resize}
.rh-sw{bottom:-4px;left:-4px;cursor:sw-resize}.rh-w{top:calc(50% - 4px);left:-4px;cursor:w-resize}
/* tooltips */
.mv-tip,.sz-tip{display:none;position:absolute;top:-22px;left:0;background:var(--surface);border:1px solid var(--border2);border-radius:3px;padding:2px 6px;font-family:'DM Mono',monospace;font-size:10px;color:var(--accent);z-index:50;white-space:nowrap;pointer-events:none}
/* text element */
.el-text{width:100%;height:100%;display:flex;flex-direction:column;outline:none;cursor:text;white-space:pre-wrap;word-break:break-word;overflow:hidden;background:transparent;border:none;padding:4px}
/* image element */
.img-placeholder{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;color:var(--text3);background:var(--surface2);font-size:11px}
.img-placeholder svg{width:28px;height:28px;stroke:currentColor;fill:none;stroke-width:1.5}
.img-placeholder:hover{color:var(--text2)}
/* grid */
.grid-container{position:absolute;inset:0;overflow:hidden}
.grid-cell{position:absolute;overflow:hidden;transition:background .1s}
.grid-cell.gc-hover{background:rgba(79,255,176,.06)}
.grid-cell.gc-drop{background:rgba(79,255,176,.15);outline:2px solid var(--accent);outline-offset:-2px}
.grid-cell.gc-merge-sel{background:rgba(255,184,79,.12);outline:2px dashed var(--accent4);outline-offset:-2px}
.cell-child{position:absolute;inset:0}
.g-col-spl{position:absolute;top:0;bottom:0;width:6px;margin-left:-3px;cursor:col-resize;z-index:20;background:transparent}
.g-row-spl{position:absolute;left:0;right:0;height:6px;margin-top:-3px;cursor:row-resize;z-index:20;background:transparent}
.g-col-spl:hover,.g-row-spl:hover{background:rgba(79,255,176,.3)}
/* ghost overlay */
.gg{position:absolute;border:2px dashed var(--accent4);background:rgba(255,184,79,.08);pointer-events:none;z-index:50}
/* drop indicator */
.di{position:absolute;border:2px dashed var(--accent);background:rgba(79,255,176,.06);pointer-events:none;z-index:49}
/* group */
.el-group-bg{position:absolute;inset:0;border:1px dashed rgba(0,200,255,.4);background:rgba(0,200,255,.04);pointer-events:none}
/* selection ring on canvas (marquee) */
#marquee{position:absolute;border:1px solid var(--accent2);background:rgba(0,200,255,.08);pointer-events:none;z-index:200;display:none}
/* ============ STATUS BAR ============ */
#status{position:fixed;bottom:0;left:0;right:0;height:24px;background:var(--surface);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 14px;gap:16px;font-family:'DM Mono',monospace;font-size:10px;color:var(--text3);z-index:999}
#status span{display:flex;align-items:center;gap:4px}
#status .dot{width:5px;height:5px;border-radius:50%;background:var(--border2)}
/* ============ PROPERTIES PANEL ============ */
.pp-section{border-bottom:1px solid var(--border)}
.pp-head{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;cursor:pointer;user-select:none}
.pp-head:hover{background:rgba(255,255,255,.02)}
.pp-head-label{display:flex;align-items:center;gap:6px;font-size:10px;font-weight:600;letter-spacing:0.8px;text-transform:uppercase;color:var(--text3)}
.pp-chev{font-size:10px;color:var(--text3);transition:transform .2s}
.pp-body{padding:10px 12px;display:flex;flex-direction:column;gap:8px}
.pp-body.collapsed{display:none}
.pp-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;height:120px;color:var(--text3);font-size:12px;text-align:center}
.pp-empty svg{width:32px;height:32px;stroke:currentColor;fill:none;stroke-width:1.5;opacity:.4}
.align-btns{display:flex;gap:2px}
.align-btns button{flex:1;padding:5px 4px;background:var(--surface2);border:1px solid var(--border);border-radius:3px;color:var(--text2);cursor:pointer;font-size:11px;transition:all .15s}
.align-btns button.active{background:rgba(79,255,176,.12);border-color:var(--accent);color:var(--accent)}
.align-btns button:hover:not(.active){background:#252830}
.small-btn{padding:4px 8px;background:var(--surface2);border:1px solid var(--border2);border-radius:4px;color:var(--text2);cursor:pointer;font-size:11px;font-family:'Space Grotesk',sans-serif;transition:all .15s}
.small-btn:hover{border-color:var(--accent);color:var(--accent)}
.small-btn.danger{border-color:rgba(255,107,107,.3);color:var(--accent3)}
.small-btn.danger:hover{border-color:var(--accent3);background:rgba(255,107,107,.1)}
/* ============ TOAST ============ */
#toast{position:fixed;bottom:36px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--surface);border:1px solid var(--border2);border-radius:6px;padding:8px 16px;font-size:12px;color:var(--text2);opacity:0;transition:all .3s;z-index:9999;pointer-events:none;white-space:nowrap}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
/* ============ MODAL ============ */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:2000;display:none;align-items:center;justify-content:center}
.modal-overlay.open{display:flex}
.modal{background:var(--surface);border:1px solid var(--border2);border-radius:10px;padding:24px;width:380px;max-width:90vw}
.modal h3{font-size:15px;font-weight:600;margin-bottom:16px;color:var(--text)}
.modal-btns{display:flex;gap:8px;margin-top:20px}
.modal-btns .btn{flex:1;justify-content:center;padding:8px}
.modal-btns .btn.primary{background:var(--accent);color:#0e0f11;border-color:var(--accent);font-weight:600}
.modal-btns .btn.primary:hover{background:#5affc0}
/* ============ TEMPLATES ============ */
.tpl-item{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;background:var(--surface2);border:1px solid var(--border);border-radius:5px;cursor:grab}
.tpl-item:hover{border-color:var(--border2)}
.tpl-item span{font-size:11px;color:var(--text2)}
.tpl-item button{background:none;border:none;color:var(--text3);cursor:pointer;font-size:12px;padding:2px 4px;border-radius:3px}
.tpl-item button:hover{color:var(--accent3);background:rgba(255,107,107,.1)}
/* ============ PRINT ============ */
@media print{
  body>*:not(#printRoot){display:none!important}
  #printRoot{display:block!important;position:static!important}
  .pw{page-break-after:always;break-after:page;margin:0;padding:0;box-shadow:none}
  .pw:last-child{page-break-after:avoid}
  .gz,.er,.rh,.mv-tip,.sz-tip,.g-col-spl,.g-row-spl{display:none!important}
  @page{margin:0;size:auto}
}
#printRoot{display:none}


/* Grid minor */
.g-minor{position:absolute;inset:0;pointer-events:none;z-index:1;
  background-image:repeating-linear-gradient(0deg,rgba(100,100,200,.12) 0 1px,transparent 1px var(--gs)),
                   repeating-linear-gradient(90deg,rgba(100,100,200,.12) 0 1px,transparent 1px var(--gs));}
/* Grid major */
.g-major{position:absolute;inset:0;pointer-events:none;z-index:2;
  background-image:repeating-linear-gradient(0deg,rgba(100,100,200,.25) 0 1px,transparent 1px var(--gs10)),
                   repeating-linear-gradient(90deg,rgba(100,100,200,.25) 0 1px,transparent 1px var(--gs10));}
/* Margin lines — red */
.ml{position:absolute;background:rgba(220,50,50,.6);}


/* ============ PANEL EDGE TABS ============ */
.panel-tab{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  z-index:100;
  width:20px;height:48px;
  background:var(--surface);
  border:1px solid var(--border);
  color:var(--text3);
  cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:color .15s, background .15s, left .2s, right .2s;
  padding:0;
}
.panel-tab:hover{color:var(--accent);background:var(--surface2);}
.panel-tab.active{color:var(--accent);border-color:var(--accent);}

/* Left tab — sits at right edge of left panel */
#lp-tab{
  left:272px; /* panel width */
  border-left:none;
  border-radius:0 4px 4px 0;
}
#lp-tab.collapsed-tab{left:0;}

/* Right tab — sits at left edge of right panel */
#rp-tab{
  right:272px; /* panel width */
  border-right:none;
  border-radius:4px 0 0 4px;
}
#rp-tab.collapsed-tab{right:0;}

/* ============ PANEL COLLAPSE ============ */
.panel{
  transition:width .2s ease, 
  opacity .2s ease, border .2s ease;
  width:272px;
  flex-shrink:0; /* already there, but confirm it's present */
  min-width:0;   /* allows collapsing to 0 */
}
.panel.collapsed{
  width:0!important;
  overflow:hidden;
  opacity:0;
  border:none;
  pointer-events:none;
}

/* ============ RESPONSIVE ============ */
@media(max-width:900px){
  #lp, #rp{width:0;overflow:hidden;opacity:0;border:none;pointer-events:none;}

  #lp.mobile-open, #rp.mobile-open{
    position:fixed;
    top:48px;bottom:24px;
    width:272px!important;
    opacity:1!important;
    overflow:hidden!important;
    border:1px solid var(--border)!important;
    pointer-events:all!important;
    z-index:500;
  }
  #lp.mobile-open{left:0;}
  #rp.mobile-open{right:0;}

  #lp-tab{left:0!important;border-radius:0 4px 4px 0;}
  #rp-tab{right:0!important;border-radius:4px 0 0 4px;}
}
#canvas{
  flex:1;
  overflow:auto;
  position:relative;
  background:var(--bg);
  min-width:320px; /* never smaller than this */
}




/* ============ RICH TEXT TOOLBAR ============ */
#rich-toolbar{
  position:fixed;
  z-index:2000;
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:6px;
  padding:4px 6px;
  display:flex;
  align-items:center;
  gap:4px;
  box-shadow:0 4px 20px rgba(0,0,0,.4);
  pointer-events:all;
}
#rich-toolbar button{
  background:var(--surface2);
  border:1px solid var(--border);
  border-radius:3px;
  color:var(--text2);
  cursor:pointer;
  font-size:12px;
  padding:3px 7px;
  transition:all .15s;
  white-space:nowrap;
}
#rich-toolbar button:hover{color:var(--accent);border-color:var(--accent);}
#rich-toolbar button.active{
  background:rgba(79,255,176,.12);
  border-color:var(--accent);
  color:var(--accent);
}
#rich-toolbar input[type=color]{
  width:26px;height:26px;
  border:1px solid var(--border);
  border-radius:3px;
  background:none;
  cursor:pointer;
  padding:1px;
}
#rich-toolbar select{
  background:var(--surface2);
  border:1px solid var(--border);
  border-radius:3px;
  color:var(--text2);
  font-size:11px;
  padding:3px 4px;
  cursor:pointer;
}
.rt-sep{width:1px;height:20px;background:var(--border2);margin:0 2px;}

/* Override — allow full rich content */
.el-text[contenteditable]{
  white-space:pre-wrap;
  word-break:break-word;
}
.el-text span{display:inline;}