*{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;height:100%;overflow:hidden;}
:root{
  --bg:#18181e;--panel:#22222a;--panel2:#2c2c38;--panel3:#34343f;
  --border:rgba(255,255,255,.09);--border2:rgba(255,255,255,.18);
  --accent:#4a9eff;--text:#dde0ee;--text2:#8890b0;--text3:#44446a;
  --danger:#e05858;--success:#4ecf80;
  --highlight:rgba(74,158,255,0.12);
  --canvas-bg:#21212c;
  --ruler-bg:#1c1c24;--ruler-text:#555572;--ruler-tick:rgba(255,255,255,.12);
}
body.light-mode{
  --bg:#f0f0f5;--panel:#ffffff;--panel2:#f5f5fa;--panel3:#e8e8f0;
  --border:rgba(0,0,0,.1);--border2:rgba(0,0,0,.22);
  --accent:#2a7de1;--text:#1a1a2e;--text2:#5558a0;--text3:#9999bb;
  --canvas-bg:#dadadf;
  --ruler-bg:#e8e8f0;--ruler-text:#aaaacc;--ruler-tick:rgba(0,0,0,.12);
}
@font-face{
  font-family:'Times New Roman';
  src:url('assets/fonts/times.ttf') format('truetype');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'Times New Roman';
  src:url('assets/fonts/timesbd.ttf') format('truetype');
  font-style:normal;
  font-weight:700;
  font-display:block;
}
@font-face{
  font-family:'Times New Roman';
  src:url('assets/fonts/timesi.ttf') format('truetype');
  font-style:italic;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'Times New Roman';
  src:url('assets/fonts/timesbi.ttf') format('truetype');
  font-style:italic;
  font-weight:700;
  font-display:block;
}
@font-face{
  font-family:'PMingLiU';
  src:url('assets/fonts/mingliu.ttc') format('truetype-collection');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'MingLiU';
  src:url('assets/fonts/mingliu.ttc') format('truetype-collection');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'新細明體';
  src:url('assets/fonts/mingliu.ttc') format('truetype-collection');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'SimSun';
  src:url('assets/fonts/simsun.ttc') format('truetype-collection');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'宋體';
  src:url('assets/fonts/simsun.ttc') format('truetype-collection');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
@font-face{
  font-family:'KaiU';
  src:url('assets/fonts/kaiu.ttf') format('truetype');
  font-style:normal;
  font-weight:400;
  font-display:block;
}
body{display:flex;flex-direction:column;font-family:'Helvetica Neue',Arial,sans-serif;color:var(--text);-webkit-user-select:none;user-select:none;background:var(--bg);}

/* ── TOPBAR ── */
#topbar{height:46px;min-height:46px;background:var(--panel);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 14px;gap:7px;flex-shrink:0;z-index:30;}
.app-name{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.03em}
.app-logo{width:22px;height:22px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;color:var(--accent);background:rgba(74,158,255,.12);border:1px solid rgba(74,158,255,.25)}
.sv{width:1px;height:18px;background:var(--border);flex-shrink:0;margin:0 2px}
.tbtn{height:30px;padding:0 12px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--text2);font-size:12px;cursor:pointer;transition:background .13s,color .13s,border-color .13s;white-space:nowrap;display:inline-flex;align-items:center;gap:5px;}
.tbtn:hover{background:var(--panel2);color:var(--text)}
.tbtn.active{background:var(--highlight);color:var(--text);border-color:rgba(74,158,255,.45)}
.top-menu-wrap{position:relative}
.top-menu{position:absolute;top:calc(100% + 6px);right:0;background:var(--panel);border:1px solid var(--border2);border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.38);overflow:hidden;display:block;z-index:700;min-width:154px;padding:6px 0;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-6px) scale(.98);transform-origin:top right;transition:opacity .18s ease,transform .18s ease,visibility .18s step-end}
.top-menu.open{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0) scale(1);transition:opacity .18s ease,transform .18s ease,visibility 0s}
.top-menu.left-menu{right:auto;left:0;transform-origin:top left}
.tbtn:disabled,.tbt:disabled{opacity:.45;cursor:not-allowed;pointer-events:none}
.tbtn.primary{border-color:rgba(74,158,255,.45);color:var(--accent)}
.tbtn.primary:hover{background:var(--highlight);border-color:var(--accent)}
.tbtn-icon-only{width:30px;padding:0;justify-content:center}
#sp{flex:1}
#current-file-name{
  flex:0 1 360px;
  min-width:0;
  max-width:420px;
  height:28px;
  display:flex;
  align-items:center;
  justify-content:flex-end;
  padding:0 4px 0 12px;
  color:var(--text2);
  font-size:12px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* Page scope toggle */
#scope-toggle{display:flex;align-items:center;background:var(--panel2);border:1px solid var(--border);border-radius:20px;padding:2px;gap:2px}
.scope-btn{height:24px;padding:0 10px;border-radius:16px;border:none;background:transparent;color:var(--text2);font-size:11px;cursor:pointer;transition:all .18s;white-space:nowrap}
.scope-btn.active{background:var(--accent);color:#fff;box-shadow:0 1px 4px rgba(74,158,255,.4)}

/* Output menu */
#output-wrap{position:relative}
@keyframes fadeDown{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.omopt{padding:9px 14px;font-size:12px;color:var(--text2);cursor:pointer;display:flex;align-items:center;gap:8px;transition:background .12s;}
.omopt:hover{background:var(--panel2);color:var(--text)}
.omopt-sep{height:1px;background:var(--border);margin:2px 0}

/* Theme toggle switch */
#theme-switch-wrap{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--text3)}
.theme-sw{position:relative;width:38px;height:20px;cursor:pointer}
.theme-sw input{opacity:0;width:0;height:0;position:absolute}
.theme-sw-track{position:absolute;inset:0;background:var(--panel2);border:1px solid var(--border2);border-radius:20px;transition:background .25s}
.theme-sw input:checked+.theme-sw-track{background:var(--accent);border-color:var(--accent)}
.theme-sw-thumb{position:absolute;top:2px;left:2px;width:14px;height:14px;background:#fff;border-radius:50%;transition:transform .25s;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.theme-sw input:checked~.theme-sw-thumb{transform:translateX(18px)}

/* ── MAIN ── */
#main{display:flex;flex:1;overflow:hidden}

/* ── LEFT TOOLBAR ── */
#toolbar{width:268px;min-width:268px;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto;overflow-x:hidden;position:relative;}
#toolbar::-webkit-scrollbar{width:3px}
#toolbar::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.tg{padding:12px 14px;border-bottom:1px solid var(--border);min-width:0}
.tg-title{font-size:10px;font-weight:700;color:var(--text3);letter-spacing:.1em;text-transform:uppercase;margin-bottom:10px;display:flex;align-items:center;gap:5px}
.tool-row{display:flex;gap:6px;margin-bottom:8px;min-width:0}
.tbt{flex:1;height:42px;border-radius:8px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;transition:all .13s;font-size:10px;}
.tbt:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.tbt.active{background:rgba(74,158,255,.18);border-color:rgba(74,158,255,.5);color:var(--accent)}
#drawing-palette,#figure-palette{position:absolute;left:calc(100% + 10px);width:226px;background:var(--panel);border:1px solid var(--border2);border-radius:10px;box-shadow:0 14px 36px rgba(0,0,0,.35);padding:10px;display:block;z-index:500;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-6px) scale(.98);transform-origin:top left;transition:opacity .18s ease,transform .18s ease,visibility .18s step-end}
#drawing-palette{top:138px}
#figure-palette{top:94px}
#drawing-palette.show,#figure-palette.show{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0) scale(1);transition:opacity .18s ease,transform .18s ease,visibility 0s}
.drawing-palette-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;color:var(--text)}
.drawing-palette-head span{font-size:12px;font-weight:700}
.drawing-palette-close{width:24px;height:24px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--text3);cursor:pointer}
.drawing-palette-close:hover{color:var(--text);background:var(--panel2)}
.drawing-palette-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.drawing-palette-grid .sbt{min-height:58px}
.pr{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px;min-width:0;gap:8px}
.pl{font-size:12px;color:var(--text2);flex-shrink:0}
.prange{width:100%;accent-color:var(--accent);margin:4px 0 2px;cursor:pointer;height:3px}
.pdiv{height:1px;background:var(--border);margin:10px 0}

/* Spinbox */
.spinbox{display:flex;align-items:center;background:var(--panel2);border:1px solid var(--border);border-radius:5px;overflow:hidden;width:78px}
.spinbox input{flex:1;border:none;outline:none;background:transparent;font-size:12px;color:var(--text);padding:4px 6px;width:0;-moz-appearance:textfield;text-align:right}
.spinbox input::-webkit-inner-spin-button{-webkit-appearance:none}
.spinbox:focus-within{border-color:var(--accent)}
.spinbox-percent input{padding-right:2px}
.spin-unit{font-size:11px;color:var(--text3);padding:0 4px 0 2px;line-height:1;user-select:none}
.spin-btns{display:flex;flex-direction:column;border-left:1px solid var(--border)}
.spin-btn{width:18px;height:14px;background:transparent;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text3);transition:background .1s;font-size:9px;line-height:1}
.spin-btn:hover{background:var(--panel3);color:var(--text2)}
.spin-btn:active{background:var(--accent);color:#fff}
select.pi{width:100%;padding:4px 6px;background:var(--panel2);border:1px solid var(--border);border-radius:5px;color:var(--text);font-size:12px;outline:none;cursor:pointer;appearance:auto}
select.pi:focus{border-color:var(--accent)}

/* Dash */
.chk-wrap{display:flex;align-items:center;gap:7px;cursor:pointer;color:var(--text2);font-size:12px;margin-bottom:8px}
.chk-wrap input{cursor:pointer;accent-color:var(--accent)}
.dash-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:3px;margin-top:4px;max-height:0;opacity:0;overflow:hidden;transform:translateY(-4px);transition:max-height .22s ease,opacity .18s ease,transform .18s ease,margin-top .18s ease}
.dash-grid.show{max-height:120px;opacity:1;transform:translateY(0);margin-top:8px}
.dash-grid input{width:100%;text-align:center;padding:3px 2px;font-size:10px;background:var(--panel2);border:1px solid var(--border);border-radius:3px;color:var(--text);outline:none}
.dash-grid input:focus{border-color:var(--accent)}
.dash-lbl{font-size:9px;color:var(--text3);text-align:center;margin-top:2px}

/* Arrow select */
.arrow-flex{display:flex;gap:6px;margin-top:4px;align-items:center}
.arrow-compact{display:flex;flex-direction:column;gap:6px}
.arrow-line{display:grid;grid-template-columns:52px minmax(0,1fr) minmax(0,1fr) 28px;gap:5px;align-items:center}
.arrow-label{font-size:11px;color:var(--text2);white-space:nowrap}
.c-select{position:relative;flex:1;cursor:pointer;min-width:0}
.cs-sel{background:var(--panel2);border:1px solid var(--border);border-radius:5px;padding:0 8px;display:flex;align-items:center;justify-content:space-between;height:28px;transition:border-color .13s}
.cs-sel:hover{border-color:var(--border2)}
.cs-opts{position:absolute;top:calc(100% + 3px);left:0;right:0;background:var(--panel);border:1px solid var(--border2);border-radius:6px;max-height:220px;overflow-y:auto;display:none;z-index:300;box-shadow:0 8px 24px rgba(0,0,0,.5)}
.c-select.open .cs-opts{display:block}
.cs-opt{padding:6px 9px;display:flex;align-items:center;justify-content:center;gap:8px;font-size:12px;color:var(--text2);transition:background .13s;cursor:pointer}
#cso-linestyle .cs-opt{justify-content:flex-start}
.cs-opt:hover{background:var(--panel2);color:var(--text)}
.cs-opt svg{width:36px;height:14px;flex-shrink:0;pointer-events:none;display:block}
.swap-btn{width:100%;height:26px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);border-radius:5px;cursor:pointer;font-size:11px;transition:all .13s;margin-top:5px}
.swap-btn:hover{border-color:var(--accent);color:var(--accent)}
.scale-row{display:flex;align-items:center;gap:4px;font-size:11px;color:var(--text3)}
.scale-row .spinbox{width:60px}
.arrow-scale{width:100%!important}
.arrow-icon-btn{height:28px;width:28px;border-radius:5px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .13s}
.arrow-icon-btn:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.arrow-icon-btn.active{border-color:var(--accent);color:var(--accent);background:var(--highlight)}
.linecap-btn{height:30px;border-radius:5px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);font-size:11px;cursor:pointer;transition:all .13s;display:flex;align-items:center;justify-content:center;gap:5px;padding:0 8px}
.linecap-btn:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.linecap-btn.active{border-color:var(--accent);color:var(--accent);background:var(--highlight)}
.linecap-btn svg{flex-shrink:0}
.linecap-line{grid-template-columns:52px minmax(0,1fr) minmax(0,1fr) 0}
.curve-inline{display:grid;grid-template-columns:34px minmax(0,1fr) 50px;align-items:center;gap:8px}
.curve-range{width:100%;margin:0!important}
.curve-value{font-size:12px;color:var(--text);background:var(--panel2);border:1px solid var(--border);border-radius:5px;padding:3px 8px;min-width:50px;text-align:right;font-variant-numeric:tabular-nums;box-sizing:border-box}

/* Format btns */
.fmt-row{display:flex;gap:4px;margin-bottom:6px}
.fmt-btn{flex:1;height:26px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);border-radius:5px;cursor:pointer;font-size:12px;display:flex;align-items:center;justify-content:center;transition:all .13s}
.fmt-btn:hover{border-color:var(--border2);color:var(--text)}
.fmt-btn.active{background:rgba(74,158,255,.15);border-color:var(--accent);color:var(--accent)}

/* Color picker row */
.color-row{display:flex;align-items:center;gap:8px;margin-bottom:8px;min-width:0}
.pr > :last-child,.color-row > :last-child,.fmt-row > :last-child,.arrow-flex > :last-child,.arrow-compact > :last-child,.curve-inline > :last-child{min-width:0}
.color-swatch{width:26px;height:26px;border-radius:5px;border:2px solid var(--border);cursor:pointer;flex-shrink:0;transition:border-color .13s;position:relative;overflow:hidden}
.color-swatch:hover{border-color:var(--border2)}
.color-hex{flex:1;padding:4px 7px;background:var(--panel2);border:1px solid var(--border);border-radius:5px;color:var(--text);font-size:11px;font-family:monospace;outline:none;cursor:pointer}
.color-hex:focus{border-color:var(--accent)}

/* Color picker modal */
#color-modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:8500;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s step-end;}
#color-modal-bg.show{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .18s ease,visibility 0s}
#color-popup{background:var(--panel);border:1px solid var(--border2);border-radius:12px;box-shadow:0 16px 48px rgba(0,0,0,.6);padding:20px;width:240px;user-select:none;}
#color-popup h4{font-size:13px;color:var(--text);margin-bottom:14px;font-weight:600}
#cp-gradient{width:200px;height:140px;border-radius:6px;position:relative;cursor:crosshair;overflow:hidden;margin-bottom:12px}
#cp-gradient canvas{display:block;width:100%;height:100%;border-radius:6px}
#cp-cursor{position:absolute;width:12px;height:12px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.4);pointer-events:none;transform:translate(-50%,-50%)}
#cp-hue{width:200px;height:14px;border-radius:7px;position:relative;cursor:pointer;margin-bottom:12px;background:linear-gradient(to right,#f00,#ff0,#0f0,#0ff,#00f,#f0f,#f00)}
#cp-hue-thumb{position:absolute;top:50%;width:14px;height:14px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.4);transform:translate(-50%,-50%);pointer-events:none}
#cp-hex-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
#cp-hex-row label{font-size:10px;color:var(--text3)}
#cp-hex{flex:1;padding:4px 7px;background:var(--panel2);border:1px solid var(--border);border-radius:5px;color:var(--text);font-size:11px;font-family:monospace;outline:none}
#cp-hex:focus{border-color:var(--accent)}
#cp-rgb-row{display:flex;gap:6px;margin-bottom:12px}
.cp-ch{display:flex;flex-direction:column;align-items:center;gap:3px;flex:1}
.cp-ch input{width:100%;text-align:center;padding:3px 4px;background:var(--panel2);border:1px solid var(--border);border-radius:4px;color:var(--text);font-size:11px;outline:none}
.cp-ch input:focus{border-color:var(--accent)}
.cp-ch label{font-size:9px;color:var(--text3)}
#cp-actions{display:flex;gap:6px}
#cp-actions button{flex:1;height:28px;border-radius:6px;font-size:12px;cursor:pointer;border:1px solid var(--border);background:var(--panel2);color:var(--text2);transition:all .13s}
#cp-actions button:last-child{background:var(--accent);color:#fff;border-color:var(--accent)}
#cp-actions button:hover:first-child{background:var(--panel3)}
#cp-actions button:last-child:hover{background:#3a8ef0}

/* Color preset swatches */
.cp-swatches{display:flex;gap:4px;margin-bottom:10px;flex-wrap:wrap}
.cp-swatch{width:18px;height:18px;border-radius:4px;cursor:pointer;border:1px solid rgba(255,255,255,.15);box-shadow:inset 0 0 0 1px rgba(0,0,0,.15);transition:transform .1s}
.cp-swatch:hover{transform:scale(1.2);border-color:var(--accent)}
/* Opacity slider */
.cp-opacity-row{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.cp-opacity-row label{font-size:10px;color:var(--text3);min-width:12px}
.cp-opacity-row input[type=range]{flex:1;height:6px;-webkit-appearance:none;appearance:none;background:linear-gradient(to right,rgba(0,0,0,0),#000);border-radius:3px;outline:none}
.cp-opacity-row input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid var(--border2);cursor:pointer}
.cp-opacity-row .cp-opacity-val{font-size:10px;color:var(--text2);min-width:28px;text-align:right}

/* Delete ctbtn (in toolbar, conditionally shown) */
#btn-del-sel{display:none}
#btn-del-sel.show{display:inline-flex}

/* Icon-only ctbtn (no text, square) */
.ctbtn-icon{padding:0;width:34px;justify-content:center}
/* Color picker trigger in toolbar */
.ctbtn-color{padding:0 8px;gap:2px;position:relative}

.sbt{
  height:46px;border-radius:8px;border:1px solid var(--border);background:var(--panel2);
  color:var(--text2);cursor:pointer;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:3px;transition:all .13s;font-size:10px;
}
.sbt:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.sbt.active{background:rgba(74,158,255,.18);border-color:rgba(74,158,255,.5);color:var(--accent)}

/* Second color picker modal (for fill/stroke) */
#color-modal-bg2{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:8500;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s step-end;}
#color-modal-bg2.show{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .18s ease,visibility 0s}
#color-popup2{background:var(--panel);border:1px solid var(--border2);border-radius:12px;box-shadow:0 16px 48px rgba(0,0,0,.6);padding:20px;width:240px;user-select:none;}
#color-popup2 h4{font-size:13px;color:var(--text);margin-bottom:14px;font-weight:600}
#cp2-gradient{width:200px;height:140px;border-radius:6px;position:relative;cursor:crosshair;overflow:hidden;margin-bottom:12px}
#cp2-gradient canvas{display:block;width:100%;height:100%;border-radius:6px}
#cp2-cursor{position:absolute;width:12px;height:12px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.4);pointer-events:none;transform:translate(-50%,-50%)}
#cp2-hue{width:200px;height:14px;border-radius:7px;position:relative;cursor:pointer;margin-bottom:12px;background:linear-gradient(to right,#f00,#ff0,#0f0,#0ff,#00f,#f0f,#f00)}
#cp2-hue-thumb{position:absolute;top:50%;width:14px;height:14px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px rgba(0,0,0,.4);transform:translate(-50%,-50%);pointer-events:none}
#cp2-hex-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}
#cp2-hex-row label{font-size:10px;color:var(--text3)}
#cp2-hex{flex:1;padding:4px 7px;background:var(--panel2);border:1px solid var(--border);border-radius:5px;color:var(--text);font-size:11px;font-family:monospace;outline:none}
#cp2-hex:focus{border-color:var(--accent)}
#cp2-rgb-row{display:flex;gap:6px;margin-bottom:12px}
#cp2-actions{display:flex;gap:6px}
#cp2-actions button{flex:1;height:28px;border-radius:6px;font-size:12px;cursor:pointer;border:1px solid var(--border);background:var(--panel2);color:var(--text2);transition:all .13s}
#cp2-actions button:last-child{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Shape SVG overlay */
#shape-overlay{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:visible;}

/* Shape selection bounding box */
.shape-sel-box{pointer-events:all;}
.shape-sel-box rect.sel-rect{fill:none;stroke:rgba(74,158,255,.55);stroke-width:1;stroke-dasharray:4 3;}
.shape-sel-box circle.sel-handle{fill:rgba(255,255,255,0.7);stroke:rgba(78,207,128,.9);stroke-width:1.2;cursor:default;}
.shape-sel-box circle.sel-handle-rot{fill:rgba(255,255,255,0.5);stroke:rgba(74,158,255,.8);stroke-width:1.2;cursor:crosshair;}
.shape-sel-box.locked{opacity:.48}
.shape-sel-box.locked rect.sel-rect{stroke:rgba(255,120,120,.55)}
.shape-sel-box.locked circle.sel-handle,
.shape-sel-box.locked circle.sel-handle-rot{fill:rgba(255,255,255,.45);stroke:rgba(255,120,120,.78)}

/* Shape mini toolbar */
#shape-mini-toolbar{
  position:absolute;display:none;
  background:var(--panel);border:1px solid var(--border2);border-radius:8px;
  box-shadow:0 4px 16px rgba(0,0,0,.35);
  padding:4px 6px;gap:3px;align-items:center;
  z-index:450;pointer-events:all;
  transform:translateX(-50%);
}
#shape-mini-toolbar.show{display:flex;}
#text-mini-toolbar{
  position:absolute;background:var(--panel);border:1px solid var(--border2);
  border-radius:8px;box-shadow:0 4px 16px rgba(0,0,0,.3);
  display:none;flex-direction:row;
  padding:4px 6px;gap:3px;align-items:center;
  z-index:450;pointer-events:all;
  transform:translateX(-50%);
}
#text-mini-toolbar.show{display:flex;}
.smt-btn{
  width:28px;height:28px;border-radius:5px;border:1px solid var(--border);
  background:transparent;color:var(--text2);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:all .13s;
}
.smt-btn:hover{background:var(--panel2);color:var(--text)}
.smt-btn.locked{color:#ff6b76;border-color:rgba(255,107,118,.45);background:rgba(255,107,118,.1)}
.smt-btn.locked:hover{color:#ff9098;border-color:rgba(255,107,118,.6);background:rgba(255,107,118,.14)}
.smt-sep{width:1px;height:18px;background:var(--border);margin:0 2px;flex-shrink:0}

/* ── CENTER COLUMN ── */
#center-col{display:flex;flex-direction:column;flex:1;overflow:hidden;min-width:0}

/* Canvas toolbar */
#canvas-toolbar{height:40px;min-height:40px;background:var(--panel);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 12px;gap:6px;flex-shrink:0;z-index:20;}
.ctbtn{height:28px;padding:0 10px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--text2);font-size:11px;cursor:pointer;display:inline-flex;align-items:center;gap:4px;transition:all .13s;white-space:nowrap;}
.ctbtn:hover{background:var(--panel2);color:var(--text)}
.ctbtn.active{background:var(--highlight);border-color:var(--accent);color:var(--accent)}
.ctbtn:disabled{opacity:.3;cursor:not-allowed}
.boundary-dot{width:7px;height:7px;border-radius:50%;border:1.5px solid #ff4b55;box-sizing:border-box;display:inline-block}
.ctbtn.active .boundary-dot{background:#ff4b55;box-shadow:0 0 0 3px rgba(255,75,85,.12)}
#btn-preview.active{
  color:#d7ebff;
  border-color:rgba(74,158,255,.72);
  background:linear-gradient(180deg,rgba(74,158,255,.18),rgba(74,158,255,.08));
  box-shadow:0 0 0 1px rgba(74,158,255,.18) inset,0 0 10px rgba(74,158,255,.24),0 0 22px rgba(74,158,255,.12);
}
#btn-preview.active:hover{
  background:linear-gradient(180deg,rgba(74,158,255,.22),rgba(74,158,255,.1));
  border-color:rgba(97,173,255,.82);
  box-shadow:0 0 0 1px rgba(97,173,255,.22) inset,0 0 12px rgba(74,158,255,.3),0 0 26px rgba(74,158,255,.16);
}
#btn-patent-boundary.active{
  color:#ffd7db;
  border-color:rgba(255,91,107,.72);
  background:linear-gradient(180deg,rgba(255,91,107,.18),rgba(255,91,107,.08));
  box-shadow:0 0 0 1px rgba(255,91,107,.18) inset,0 0 10px rgba(255,91,107,.28),0 0 22px rgba(255,91,107,.14);
}
#btn-patent-boundary.active:hover{
  background:linear-gradient(180deg,rgba(255,91,107,.22),rgba(255,91,107,.1));
  border-color:rgba(255,116,128,.82);
  box-shadow:0 0 0 1px rgba(255,116,128,.22) inset,0 0 12px rgba(255,91,107,.34),0 0 26px rgba(255,91,107,.18);
}
#btn-patent-boundary.active .boundary-dot{
  background:#ff4b55;
  box-shadow:0 0 0 3px rgba(255,75,85,.18),0 0 8px rgba(255,75,85,.4);
}
body.light-mode #btn-preview.active{
  color:#0f4f9f;
  border-color:rgba(42,125,225,.7);
  background:linear-gradient(180deg,rgba(42,125,225,.24),rgba(42,125,225,.13));
  box-shadow:0 0 0 1px rgba(42,125,225,.22) inset,0 0 12px rgba(42,125,225,.24),0 0 26px rgba(42,125,225,.12);
}
body.light-mode #btn-preview.active:hover{
  color:#0b468d;
  background:linear-gradient(180deg,rgba(42,125,225,.28),rgba(42,125,225,.16));
  border-color:rgba(42,125,225,.84);
  box-shadow:0 0 0 1px rgba(42,125,225,.28) inset,0 0 14px rgba(42,125,225,.3),0 0 30px rgba(42,125,225,.14);
}
body.light-mode #btn-patent-boundary.active{
  color:#9f1d2a;
  border-color:rgba(225,70,91,.72);
  background:linear-gradient(180deg,rgba(225,70,91,.22),rgba(225,70,91,.12));
  box-shadow:0 0 0 1px rgba(225,70,91,.2) inset,0 0 12px rgba(225,70,91,.24),0 0 26px rgba(225,70,91,.12);
}
body.light-mode #btn-patent-boundary.active:hover{
  color:#8f1723;
  background:linear-gradient(180deg,rgba(225,70,91,.26),rgba(225,70,91,.14));
  border-color:rgba(225,70,91,.84);
  box-shadow:0 0 0 1px rgba(225,70,91,.26) inset,0 0 14px rgba(225,70,91,.28),0 0 30px rgba(225,70,91,.14);
}
body.light-mode #btn-patent-boundary.active .boundary-dot{
  box-shadow:0 0 0 3px rgba(255,75,85,.2),0 0 10px rgba(225,70,91,.38);
}
.ctsep{width:1px;height:18px;background:var(--border);flex-shrink:0;margin:0 2px}
.ct-sp{flex:1}
#zoom-label{font-size:11px;color:var(--text3);min-width:38px;text-align:right;font-variant-numeric:tabular-nums}

/* ── CANVAS AREA ── */
#canvas-outer{flex:1;display:flex;overflow:hidden;position:relative}
#ruler-corner{position:absolute;top:0;left:0;width:20px;height:20px;background:var(--ruler-bg);z-index:15;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}
#ruler-h{position:absolute;top:0;left:20px;right:0;height:20px;overflow:hidden;z-index:14;border-bottom:1px solid var(--border)}
#ruler-v{position:absolute;top:20px;left:0;bottom:0;width:20px;overflow:hidden;z-index:14;border-right:1px solid var(--border)}
#ruler-h canvas,#ruler-v canvas{display:block}
#canvas-area{position:absolute;top:20px;left:20px;right:0;bottom:0;overflow:hidden;background:var(--canvas-bg);background-image:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);background-size:40px 40px;}
body.light-mode #canvas-area{background-image:linear-gradient(rgba(0,0,0,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(0,0,0,.05) 1px,transparent 1px);}
#canvas-view{position:absolute;display:none;overflow:visible}
#canvas-wrap{position:absolute;left:50%;top:50%;transform-origin:center center;will-change:transform;display:none;overflow:visible}
#base-svg{display:block;background:#fff}
#overlay-svg{position:absolute;top:0;left:0;overflow:visible;pointer-events:none}
#overlay-svg .LG{pointer-events:all}
#patent-boundary-overlay{z-index:3}

#page-rotate-menu{min-width:132px}

/* Drop zone */
#dropzone{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;background:rgba(18,18,28,.7);backdrop-filter:blur(6px)}
.dicon{width:68px;height:68px;border-radius:18px;border:2px dashed rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:rgba(255,255,255,.15);letter-spacing:.08em;text-align:center;line-height:1.4}
.dtxt{font-size:13px;color:var(--text3);text-align:center;line-height:2.4}
#openbtn{height:36px;padding:0 24px;border-radius:8px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);font-size:13px;cursor:pointer;transition:all .18s}
#openbtn:hover{border-color:var(--accent);color:var(--accent)}
#drag-hover-zone{position:absolute;inset:18px;display:none;align-items:center;justify-content:center;border:1.5px dashed rgba(74,158,255,.82);border-radius:8px;background:rgba(74,158,255,.12);box-shadow:inset 0 0 0 9999px rgba(74,158,255,.035);pointer-events:none;z-index:900;animation:dragPulse 1.15s ease-in-out infinite}
#canvas-area.drag-active #drag-hover-zone{display:flex}
.drag-hover-card{min-width:220px;padding:18px 24px;border:1px solid rgba(74,158,255,.35);border-radius:8px;background:rgba(245,250,255,.9);box-shadow:0 14px 36px rgba(0,0,0,.22);text-align:center;color:#21456c}
.drag-hover-icon{width:44px;height:44px;margin:0 auto 10px;border:1.5px solid rgba(33,69,108,.35);border-radius:7px;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;letter-spacing:.08em;color:#2a7de1;background:rgba(255,255,255,.75)}
.drag-hover-title{font-size:14px;font-weight:700;margin-bottom:5px}
.drag-hover-sub{font-size:11px;color:rgba(33,69,108,.68)}
@keyframes dragPulse{0%,100%{border-color:rgba(74,158,255,.62);background:rgba(74,158,255,.09)}50%{border-color:rgba(74,158,255,1);background:rgba(74,158,255,.17)}}

/* Text input */
#TIC{position:absolute;display:none;z-index:500;pointer-events:all;transform-origin:center}
#TIF{border:1.5px solid rgba(74,158,255,.6);outline:none;background:rgba(255,255,255,.96);border-radius:5px;padding:5px 10px;font-size:15px;font-family:'Times New Roman',Times,serif;color:rgba(20,20,40,.95);min-width:120px;max-width:none;width:160px;caret-color:#4a9eff;box-shadow:0 2px 14px rgba(0,0,0,.18);letter-spacing:.02em;line-height:1.4;resize:none;overflow:hidden;box-sizing:border-box;display:block;white-space:pre;overflow-wrap:normal;word-break:normal;}
#TIF.in-place-edit{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important;border-radius:0!important;min-width:0!important;max-width:none!important;}
#TIF::placeholder{color:rgba(40,40,80,.35);font-style:italic}
#TIF:focus{border-color:rgba(74,158,255,.9);background:#fff}
#TIF.in-place-edit:focus{border-color:transparent!important;background:transparent!important;}
#RTE{border:1.5px solid rgba(74,158,255,.65);outline:none;background:rgba(255,255,255,.96);box-shadow:0 2px 14px rgba(0,0,0,.18);border-radius:5px;padding:5px 10px;margin:0;min-width:0;max-width:none;white-space:pre;overflow:visible;box-sizing:border-box;caret-color:#4a9eff;color:rgba(20,20,40,.95);line-height:1.25;-webkit-user-select:text;user-select:text}
#RTE:focus{outline:none;border-color:rgba(74,158,255,.95);background:#fff}
#RTE.in-place-edit{background:transparent!important;border:none!important;box-shadow:none!important;padding:0!important;border-radius:0!important;min-width:0!important;max-width:none!important}
#RTE.pending-label-edit,#RTE.pending-text-edit{background:transparent!important;box-shadow:none!important;border:none!important;border-radius:0!important;padding:0!important;min-width:0!important}
#RTE:empty:before{content:attr(data-placeholder);color:rgba(40,40,80,.35);font-style:italic;pointer-events:none}
#RTE::selection,#RTE *::selection,#RTE [data-run]::selection{background:rgba(42,101,210,.28)!important;color:inherit!important;text-shadow:none!important}
#RTE sup,#RTE sub{font-size:.65em;line-height:0}

/* Selection pill (canvas center-top) */
#sel-pill{
  position:absolute;top:14px;left:50%;transform:translateX(-50%);
  display:none;align-items:center;gap:6px;
  z-index:450;white-space:nowrap;pointer-events:all;
}

/* Hint */
#hint{position:absolute;bottom:0;left:0;right:0;background:rgba(6,6,16,.82);padding:6px 14px;font-size:11px;color:rgba(255,255,255,.5);pointer-events:none;display:none;border-top:1px solid rgba(74,158,255,.1)}
#box-sel{position:absolute;border:1px solid rgba(74,158,255,.6);background:rgba(74,158,255,.08);pointer-events:none;display:none;z-index:400}

/* FILMSTRIP */
#film-container{display:flex;flex-direction:column;flex-shrink:0;background:var(--panel);border-top:1px solid var(--border);z-index:20}
#film-toggle{height:14px;display:flex;justify-content:center;align-items:center;cursor:pointer;background:var(--panel2);border-bottom:1px solid var(--border);transition:background .15s}
#film-toggle:hover{background:var(--panel3)}
#film-toggle-bar{width:28px;height:3px;border-radius:2px;background:var(--text3);transition:background .15s}
#film-toggle:hover #film-toggle-bar{background:var(--text2)}
#film{height:110px;background:var(--panel);display:flex;align-items:center;gap:10px;padding:0 14px;overflow-x:auto;overflow-y:hidden;transition:height .28s cubic-bezier(.4,0,.2,1)}
#film::-webkit-scrollbar{height:3px}
#film::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.fw{flex-shrink:0;display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;opacity:.75;transition:opacity .15s}
.fw:hover,.fw.active{opacity:1}
.fp{position:relative;border-radius:5px;border:2px solid transparent;transition:border-color .15s;overflow:hidden;background:#111}
.fw:hover .fp{border-color:rgba(74,158,255,.4)}
.fw.active .fp{border-color:var(--accent)}
.fp canvas{display:block}
.fbadge{font-size:9px;color:var(--text3)}
.fw.active .fbadge{color:var(--accent)}
.flblcnt{position:absolute;top:3px;right:3px;background:var(--accent);color:#fff;font-size:8px;border-radius:8px;padding:1px 5px;display:none;font-weight:700}
#nopages{font-size:12px;color:var(--text3);width:100%;text-align:center;pointer-events:none}

/* RIGHT PROPS */
#props{width:268px;min-width:268px;background:var(--panel);border-left:1px solid var(--border);overflow-y:auto;display:flex;flex-direction:column;flex-shrink:0}
#props::-webkit-scrollbar{width:3px}
#props::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.ps{padding:13px 14px;border-bottom:1px solid var(--border)}
.pt{font-size:10px;font-weight:700;color:var(--text3);letter-spacing:.1em;text-transform:uppercase;margin-bottom:11px;display:flex;align-items:center;gap:5px}
#text-edit-row{display:none!important}
#text-edit-row,#text-edit-row>div{width:100%}
#i-text{display:block!important;width:100%!important;height:40px!important;min-height:40px!important;max-height:40px!important;box-sizing:border-box!important;resize:none!important;padding:6px!important;background:var(--panel2)!important;border:1px solid var(--border)!important;border-radius:5px!important;color:var(--text)!important;font-size:12px!important;font-family:'Inter',sans-serif!important;line-height:1.4!important;outline:none!important;overflow:auto!important;-webkit-user-select:text;user-select:text;}
.align-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}
.align-btn{height:32px;border-radius:6px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;transition:all .13s}
.align-btn:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.align-btn svg{display:block}
.dim-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.dim-field{display:flex;flex-direction:column;gap:5px}
.dim-field span{font-size:11px;color:var(--text3)}
.dim-spinbox{width:100%;background:var(--panel2)}
.dim-spinbox input{padding-right:8px}
.align-target-wrap{grid-column:1/-1;display:grid;grid-template-columns:34px 1fr;gap:8px;align-items:center;margin-top:4px}
.align-target-label{font-size:11px;color:var(--text3)}
.align-target-select{width:100%;height:30px}
.fig-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}
.fig-btn{height:42px;border-radius:8px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .13s;font-size:12px;font-family:'Times New Roman','PMingLiU','SimSun',serif;white-space:nowrap}
.fig-btn:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.fig-btn.active{background:rgba(74,158,255,.18);border-color:rgba(74,158,255,.5);color:var(--accent)}
.fig-btn-title{font-family:'Noto Sans TC','Microsoft JhengHei','PingFang TC',sans-serif;font-size:11px;letter-spacing:.01em}
.fig-head{justify-content:space-between;gap:8px}
.mini-check{display:flex;align-items:center;gap:5px;font-size:11px;letter-spacing:0;color:var(--text2);text-transform:none;font-weight:500}
.mini-check input{accent-color:var(--accent);margin:0}
.pt-with-check{display:flex;align-items:center;justify-content:space-between;gap:8px}
.page-lock-switch{position:relative;width:62px;height:22px;display:inline-flex;align-items:center;justify-content:flex-end;cursor:pointer;flex-shrink:0}
.page-lock-switch input{position:absolute;opacity:0;width:0;height:0}
.page-lock-track{position:absolute;top:0;right:0;width:46px;height:22px;border-radius:999px;border:1px solid var(--border2);background:var(--panel2);transition:background .22s,border-color .22s,box-shadow .22s}
.page-lock-thumb{position:absolute;top:2px;right:28px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.28);transition:transform .22s}
.page-lock-state-icon{position:absolute;left:0;top:50%;transform:translateY(-50%);width:14px;height:14px;display:inline-flex;align-items:center;justify-content:center;color:var(--text3)}
.page-lock-state-icon > span{position:absolute;display:inline-flex;align-items:center;justify-content:center;transition:opacity .18s,color .18s,transform .18s}
.page-lock-state-open{opacity:.92}
.page-lock-state-closed{opacity:0;transform:scale(.9)}
.page-lock-switch input:checked + .page-lock-track{background:rgba(224,88,88,.2);border-color:rgba(224,88,88,.62);box-shadow:0 0 0 1px rgba(224,88,88,.12),0 0 14px rgba(224,88,88,.18)}
.page-lock-switch input:checked ~ .page-lock-thumb{transform:translateX(24px)}
.page-lock-switch input:checked ~ .page-lock-state-icon{color:#ff6b76}
.page-lock-switch input:checked ~ .page-lock-state-icon .page-lock-state-open{opacity:0;transform:scale(.9)}
.page-lock-switch input:checked ~ .page-lock-state-icon .page-lock-state-closed{opacity:1;transform:scale(1)}
.page-lock-switch:hover .page-lock-track{border-color:var(--border2)}
.page-lock-switch:hover .page-lock-state-icon{color:var(--text2)}
.page-lock-switch input:focus-visible + .page-lock-track{outline:2px solid rgba(74,158,255,.28);outline-offset:2px}
.page-num-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:6px}
.page-num-btn{height:42px;border-radius:8px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);cursor:pointer;display:flex;align-items:center;justify-content:center;text-align:center;line-height:1.25;transition:all .13s;font-size:11px;padding:0 6px}
.page-num-btn:hover{border-color:var(--border2);color:var(--text);background:var(--panel3)}
.page-num-btn.active{background:rgba(74,158,255,.18);border-color:rgba(74,158,255,.5);color:var(--accent)}

#project-modal-bg,#canvas-modal-bg,#flowchart-modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.48);z-index:8500;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s step-end}
#project-modal-bg.show,#canvas-modal-bg.show,#flowchart-modal-bg.show{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .2s ease,visibility 0s}
#project-modal,#canvas-modal,#flowchart-modal{width:470px;max-width:calc(100vw - 32px);background:linear-gradient(180deg,var(--panel) 0%,color-mix(in srgb,var(--panel) 88%, transparent) 100%);border:1px solid var(--border2);border-radius:16px;box-shadow:0 22px 64px rgba(0,0,0,.5);overflow:hidden;transform:translateY(10px) scale(.985);transition:transform .2s ease,opacity .2s ease}
#project-modal-bg.show #project-modal,#canvas-modal-bg.show #canvas-modal,#flowchart-modal-bg.show #flowchart-modal{transform:translateY(0) scale(1)}
#flowchart-modal{width:650px;max-width:calc(100vw - 32px);max-height:min(92vh,980px);display:flex;flex-direction:column}
.dialog-head{display:flex;align-items:flex-start;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,color-mix(in srgb,var(--panel2) 92%, transparent) 0%, transparent 100%)}
.dialog-title{font-size:15px;font-weight:800;color:var(--text);letter-spacing:.02em}
.dialog-sub{font-size:11px;color:var(--text3);margin-top:5px;line-height:1.6}
.dialog-body{padding:18px 20px}
.dialog-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:end}
.canvas-edit-grid{grid-auto-flow:row;align-items:start}
.dialog-field{display:flex;flex-direction:column;gap:7px}
.dialog-field span{font-size:11px;color:var(--text3)}
.dialog-span-2{grid-column:1/-1}
.dialog-checks{display:flex;align-items:center;gap:14px;grid-column:1/-1;flex-wrap:wrap}
.dialog-check{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text2)}
.dialog-check input{accent-color:var(--accent)}
.dialog-field .pi,.dialog-field input[type="text"],.dialog-field input[type="number"],.dialog-field select{height:34px;padding:0 10px;background:var(--panel2);border:1px solid var(--border);border-radius:9px;color:var(--text);font-size:12px;outline:none;box-shadow:inset 0 1px 0 rgba(255,255,255,.02)}
.dialog-field .pi:focus,.dialog-field input[type="text"]:focus,.dialog-field input[type="number"]:focus,.dialog-field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(74,158,255,.12)}
.canvas-action-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.canvas-action-btn{height:44px;border-radius:8px;border:1px solid var(--border);background:#2d3142;color:#f7f9ff!important;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:0;transition:all .13s;font-weight:600}
.canvas-action-btn:hover{border-color:var(--border2);background:#363b4f;color:#fff!important}
.canvas-action-btn.active{border-color:rgba(74,158,255,.7);background:rgba(74,158,255,.28);color:#fff!important;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
.canvas-action-ico{font-size:15px;line-height:1;color:#fff!important;opacity:1;text-shadow:0 1px 0 rgba(0,0,0,.28)}
.canvas-action-btn span,.canvas-action-btn .canvas-action-ico{color:#fff!important;opacity:1}
.canvas-action-btn span:last-child{font-size:11px}
body.light-mode .canvas-action-btn{background:#58627b!important;border-color:#4c556c!important;color:#fff!important;box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}
body.light-mode .canvas-action-btn:hover{background:#65708b!important;border-color:#3f485f!important;color:#fff!important}
body.light-mode .canvas-action-btn.active{background:#2a7de1!important;border-color:#2a7de1!important;color:#fff!important;box-shadow:0 4px 12px rgba(42,125,225,.22)}
body.light-mode .canvas-action-btn span,body.light-mode .canvas-action-btn .canvas-action-ico{color:#fff!important}
.canvas-preset-field{grid-column:1}
.canvas-orientation-field{grid-column:2}
.canvas-width-field{grid-column:1}
.canvas-height-field{grid-column:2}
.canvas-rotate-row{display:flex;align-items:center;gap:8px;grid-column:1/-1;flex-wrap:wrap}
.canvas-rotate-btn{height:32px;padding:0 12px;border-radius:6px;border:1px solid var(--border);background:var(--panel2);color:var(--text2);cursor:pointer;font-size:12px;transition:all .13s}
.canvas-rotate-btn:hover{border-color:var(--border2);background:var(--panel3);color:var(--text)}
.canvas-rotate-btn.active{border-color:rgba(74,158,255,.55);background:rgba(74,158,255,.15);color:var(--accent)}
.dialog-note{margin-top:12px;font-size:11px;color:var(--text3);line-height:1.6}

#reset-modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.48);z-index:8500;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s step-end}
#reset-modal-bg.show{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .2s ease,visibility 0s}
#reset-modal{width:560px;max-width:calc(100vw - 32px);max-height:min(88vh,760px);background:var(--panel);border:1px solid var(--border2);border-radius:14px;box-shadow:0 22px 64px rgba(0,0,0,.55);overflow:hidden;transform:translateY(10px) scale(.985);transition:transform .2s ease;display:flex;flex-direction:column}
#reset-modal-bg.show #reset-modal{transform:translateY(0) scale(1)}
.reset-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,color-mix(in srgb,var(--panel2) 92%, transparent) 0%, transparent 100%);flex-shrink:0}
.reset-title{font-size:15px;font-weight:800;color:var(--text)}
.reset-sub{font-size:11px;color:var(--text3);margin-top:5px;line-height:1.6}
.reset-x{width:28px;height:28px;border-radius:5px;border:1px solid var(--border);background:transparent;color:var(--text3);cursor:pointer;font-size:18px;line-height:1}
.reset-x:hover{color:var(--text);background:var(--panel2)}
.reset-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:18px 20px;overflow-y:auto;min-height:0}
.reset-section{border:1px solid var(--border);border-radius:12px;background:linear-gradient(180deg,var(--panel2) 0%,color-mix(in srgb,var(--panel2) 84%, transparent) 100%);padding:13px 14px;display:flex;flex-direction:column;gap:9px}
.reset-section-title{font-size:12px;font-weight:800;color:var(--text);letter-spacing:.04em;padding-bottom:7px;border-bottom:1px solid var(--border);margin-bottom:1px}
.reset-grid label{font-size:12px;color:var(--text2);display:flex;align-items:center;gap:8px;line-height:1.4;user-select:none}
.reset-grid input{accent-color:var(--accent)}
.reset-actions{display:flex;justify-content:flex-end;gap:8px;padding:14px 20px;border-top:1px solid var(--border);background:linear-gradient(0deg,color-mix(in srgb,var(--panel2) 92%, transparent) 0%, transparent 100%);flex-shrink:0}
.reset-actions button{height:34px;padding:0 16px;border-radius:9px;border:1px solid var(--border);background:transparent;color:var(--text2);cursor:pointer;font-size:12px;font-weight:600}
.reset-actions button:hover{border-color:var(--border2);color:var(--text)}
.reset-actions button.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.reset-check{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 4px;color:var(--text2);font-size:12px;font-weight:600;user-select:none}
.reset-check input{accent-color:var(--accent);margin:0}
.flowchart-hidden-mode{display:none}
.flowchart-settings-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;height:38px;padding:0 14px;margin-bottom:12px;border:1px solid var(--border2);border-radius:8px;background:var(--panel2);color:var(--text);font-size:13px;font-weight:700;cursor:pointer}
.flowchart-settings-toggle:hover{border-color:var(--accent);color:var(--text)}
#flowchart-settings-toggle-icon{font-size:14px;color:var(--text2)}
.flowchart-settings-panel{display:block;max-height:0;opacity:0;overflow:hidden;transform:translateY(-6px);margin-bottom:0;transition:max-height .24s ease,opacity .18s ease,transform .18s ease,margin-bottom .18s ease}
.flowchart-settings-panel.show{max-height:1200px;opacity:1;transform:translateY(0);margin-bottom:12px}
.flowchart-settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.flowchart-setting-card{border:1px solid var(--border);border-radius:8px;background:var(--panel2);padding:10px}
.flowchart-setting-title{font-size:12px;font-weight:700;color:var(--text);margin-bottom:8px}
.flowchart-setting-row{display:grid;grid-template-columns:1fr 110px;gap:8px;align-items:center;margin-bottom:8px}
.flowchart-setting-row:last-child{margin-bottom:0}
.flowchart-setting-row label{font-size:11px;color:var(--text2)}
.flowchart-setting-row input,.flowchart-setting-row select{height:30px;padding:0 8px;background:var(--panel);border:1px solid var(--border);border-radius:5px;color:var(--text);font-size:12px;outline:none;width:100%}
.flowchart-setting-row input:focus,.flowchart-setting-row select:focus{border-color:var(--accent)}
.flowchart-align-group{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
.flowchart-align-btn{height:30px;padding:0;font-size:14px;line-height:1}
.flowchart-spinbox{width:100%;background:var(--panel);border-color:var(--border)}
.flowchart-spinbox input{padding-right:8px}
.flowchart-spinbox .spin-btn:hover{background:var(--panel2)}
.flowchart-arrow-select .cs-sel{height:30px;background:var(--panel);border:1px solid var(--border);border-radius:5px}
.flowchart-arrow-select .cs-opts{min-width:100%}
.flowchart-arrow-select #cs-flowchart-line-end-val{display:flex;align-items:center;justify-content:center;width:100%}
.flowchart-head{display:grid;grid-template-columns:34px 92px 1fr 110px;gap:10px;padding:0 2px 6px;font-size:11px;color:var(--text3)}
.flowchart-row{display:grid;grid-template-columns:34px 92px 1fr 110px;gap:10px;align-items:start;margin-bottom:10px}
.flowchart-row .pi,.flowchart-row input,.flowchart-row textarea{width:100%}
.flowchart-row input,.flowchart-row textarea{padding:6px 8px;background:var(--panel2);border:1px solid var(--border);border-radius:5px;color:var(--text);font-size:12px;outline:none;box-sizing:border-box}
.flowchart-row input{height:30px}
.flowchart-row textarea.flowchart-content{min-height:44px;line-height:1.45;resize:vertical;overflow:auto}
.flowchart-row input:focus,.flowchart-row textarea:focus{border-color:var(--accent)}
.flowchart-row .flowchart-shape{width:100%}
.flowchart-del{width:30px;height:30px;border:none;border-radius:6px;background:#d64747;color:#fff;font-size:18px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.flowchart-del:hover{background:#c53a3a}
.flowchart-add-wrap{display:flex;justify-content:center;padding:10px 0 4px}
#flowchart-add-row{width:42px;height:42px;border-radius:50%;border:1px solid var(--border2);background:var(--panel2);color:var(--text);font-size:28px;line-height:1;cursor:pointer;transition:all .13s}
#flowchart-add-row:hover{background:var(--panel3);border-color:var(--accent);color:var(--accent)}
#flowchart-modal .dialog-head{flex-shrink:0}
#flowchart-modal .dialog-body{flex:1;min-height:0;overflow-y:auto;padding-right:14px}
#flowchart-modal .reset-actions{flex-shrink:0;border-top:1px solid var(--border);background:linear-gradient(180deg,color-mix(in srgb,var(--panel) 92%, transparent) 0%, var(--panel) 100%);position:relative;z-index:1}
#flowchart-modal .dialog-body::-webkit-scrollbar{width:10px}
#flowchart-modal .dialog-body::-webkit-scrollbar-thumb{background:color-mix(in srgb,var(--accent) 28%, var(--panel3));border-radius:999px;border:2px solid transparent;background-clip:padding-box}
#flowchart-modal .dialog-body::-webkit-scrollbar-track{background:transparent}

/* STATUS BAR */
#statusbar{height:24px;min-height:24px;background:var(--panel);border-top:1px solid var(--border);display:flex;align-items:center;padding:0 14px;gap:0;font-size:11px;color:var(--text3);flex-shrink:0}
#statusbar .sb-item{padding:0 10px;border-right:1px solid var(--border);white-space:nowrap}
#statusbar .sb-item:first-child{padding-left:0}
#statusbar .sb-item:last-child{border-right:none}
#statusbar b{color:var(--text2);font-weight:500}
#sb-flex{flex:1}

/* LOADING */
#loading{position:fixed;inset:0;background:rgba(18,18,26,.88);display:flex;align-items:center;justify-content:center;flex-direction:column;gap:14px;z-index:9999;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s step-end}
#loading.show{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .18s ease,visibility 0s}
#loading-text{font-size:13px;color:var(--text2)}
.spinner{width:28px;height:28px;border:2.5px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
input[type=file]{display:none}

/* HELP MODAL */
#help-modal{position:fixed;inset:0;background:rgba(0,0,0,.55);backdrop-filter:blur(4px);z-index:8000;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .18s ease,visibility .18s step-end}
#help-modal.show{opacity:1;visibility:visible;pointer-events:auto;transition:opacity .18s ease,visibility 0s}
#help-box{background:var(--panel);border:1px solid var(--border2);border-radius:14px;width:560px;max-height:80vh;display:flex;flex-direction:column;box-shadow:0 24px 60px rgba(0,0,0,.5);overflow:hidden}
#help-header{padding:18px 20px 14px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
#help-header h2{font-size:15px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px}
#help-close{background:transparent;border:none;color:var(--text3);cursor:pointer;font-size:20px;line-height:1;padding:2px 4px;border-radius:4px;transition:all .13s}
#help-close:hover{background:var(--panel2);color:var(--text)}
#help-body{overflow-y:auto;padding:20px;flex:1}
#help-body::-webkit-scrollbar{width:4px}
#help-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}
.help-step{margin-bottom:24px}
.help-step-label{font-size:10px;font-weight:700;color:var(--accent);letter-spacing:.12em;text-transform:uppercase;margin-bottom:6px}
.help-step h3{font-size:14px;font-weight:700;color:var(--text);margin-bottom:8px}
.help-step p{font-size:12px;color:var(--text2);line-height:1.85}
.help-step ul{font-size:12px;color:var(--text2);line-height:2;padding-left:16px}
.help-kv{display:grid;grid-template-columns:120px 1fr;gap:4px 12px;font-size:12px;margin-top:4px}
.help-kv .k{color:var(--text);font-weight:600;background:var(--panel2);border-radius:4px;padding:2px 7px;font-family:monospace;font-size:11px;display:flex;align-items:center}
.help-kv .v{color:var(--text2);display:flex;align-items:center}
#help-footer{padding:14px 20px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;flex-shrink:0}
#help-footer button{height:34px;padding:0 20px;border-radius:7px;background:var(--accent);color:#fff;border:none;font-size:13px;cursor:pointer;transition:background .13s}
#help-footer button:hover{background:#3a8ef0}