*{box-sizing:border-box}
:root{
  --border:#cfcfcf;
  --panel:#ffffff;
  --bg:#f4f4f4;
  --text:#222;
  --muted:#666;
  --accent:#1f4b3f;
  --accent2:#e9efe9;
}
html,body{margin:0;height:100%;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:var(--bg)}
button,input,select,textarea{font:inherit}
button{cursor:pointer;border:1px solid #aaa;background:#fff;border-radius:6px;padding:8px 11px}
button:hover{background:#f2f2f2}
button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
button.danger{color:#8a1d1d;border-color:#c99}
button.small{padding:4px 8px;font-size:.9rem}
.app-header{display:flex;justify-content:space-between;align-items:center;padding:12px 18px;background:#fff;border-bottom:1px solid var(--border);gap:12px}
.app-header h1{font-size:1.3rem;margin:0}
.app-header .sub{margin:2px 0 0;color:var(--muted);font-size:.9rem}
.toolbar{display:flex;gap:8px;flex-wrap:wrap}
.app-shell{display:grid;grid-template-columns:280px minmax(500px,1fr) 260px;height:calc(100vh - 74px)}
.sidebar,.inspector{overflow:auto;padding:12px;background:#fafafa}
.sidebar{border-right:1px solid var(--border)}
.inspector{border-left:1px solid var(--border)}
.workspace{min-width:0;display:flex;flex-direction:column}
.workspace-toolbar{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:10px;background:#fff;border-bottom:1px solid var(--border)}
.tool-group{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:12px;margin-bottom:12px}
.panel h2{font-size:1rem;margin:0 0 10px}
.section-heading{display:flex;justify-content:space-between;align-items:center}
label{display:block;font-size:.9rem;margin-bottom:10px}
input,select,textarea{width:100%;margin-top:4px;border:1px solid #aaa;border-radius:5px;padding:7px;background:#fff}
.canvas-wrap{flex:1;overflow:auto;padding:16px}
.room-canvas{
  position:relative;
  width:1200px;
  height:800px;
  min-width:1200px;
  min-height:800px;
  background:
    linear-gradient(#ececec 1px, transparent 1px),
    linear-gradient(90deg,#ececec 1px,transparent 1px),
    #fff;
  background-size:25px 25px;
  border:1px solid #aaa;
  box-shadow:0 1px 6px rgba(0,0,0,.08);
  overflow:hidden;
}
.statusbar{display:flex;justify-content:space-between;padding:7px 12px;border-top:1px solid var(--border);background:#fff;color:var(--muted);font-size:.85rem}
.sessions-list,.people-list{display:flex;flex-direction:column;gap:6px}
.session-row,.person-row{border:1px solid var(--border);background:#fff;border-radius:6px;padding:8px;display:flex;justify-content:space-between;align-items:center;gap:6px}
.session-row.active{border-color:var(--accent);background:var(--accent2)}
.person-row.selected{outline:2px solid var(--accent)}
.person-row[draggable="true"]{cursor:grab}
.person-main{min-width:0}
.person-name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.person-meta{font-size:.8rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.icon-btn{padding:3px 6px}
.hint,.muted{font-size:.83rem;color:var(--muted)}
.help{margin:0;padding-left:20px;font-size:.88rem}
.help li{margin:5px 0}

.layout-item{
  position:absolute;
  user-select:none;
  touch-action:none;
  transform-origin:center;
}
.layout-item.selected{outline:2px solid #1f4b3f;outline-offset:3px}
.table-body{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  border:2px solid #444;
  background:#f0eadf;
  font-weight:700;
  text-align:center;
  padding:8px;
}
.layout-item.round .table-body{border-radius:50%}
.layout-item.square .table-body{border-radius:8px}
.layout-item.rectangle .table-body{border-radius:8px}
.table-label{pointer-events:none}
.seat{
  position:absolute;
  width:58px;
  height:34px;
  border-radius:7px;
  border:1px solid #777;
  background:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-size:11px;
  padding:2px;
  cursor:pointer;
  overflow:hidden;
  z-index:4;
  transform:translate(-50%,-50%);
}
.seat.occupied{background:#eaf2ea;border-color:#486b57}
.seat.target{outline:2px dashed #1f4b3f}
.room-object{
  position:absolute;
  inset:0;
  border:2px dashed #777;
  background:rgba(230,230,230,.78);
  display:flex;
  justify-content:center;
  align-items:center;
  font-weight:700;
  text-align:center;
  padding:6px;
}
.resize-handle,.rotate-handle{
  position:absolute;
  width:16px;
  height:16px;
  border-radius:50%;
  background:#fff;
  border:2px solid #1f4b3f;
  z-index:10;
  display:none;
}
.layout-item.selected .resize-handle,
.layout-item.selected .rotate-handle{
  display:block;
}
.resize-handle{
  right:6px;
  bottom:6px;
  cursor:nwse-resize;
}
.rotate-handle{
  left:50%;
  top:-30px;
  transform:translateX(-50%);
  cursor:grab;
}
.rotate-handle:after{
  content:"";
  position:absolute;
  left:6px;
  top:14px;
  width:2px;
  height:14px;
  background:#1f4b3f
}
dialog{border:none;border-radius:10px;box-shadow:0 15px 45px rgba(0,0,0,.25);min-width:320px}
dialog::backdrop{background:rgba(0,0,0,.35)}
.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}

@media (max-width:1000px){
  .app-shell{grid-template-columns:240px minmax(500px,1fr)}
  .inspector{display:none}
}
@media (max-width:760px){
  .app-header{align-items:flex-start;flex-direction:column}
  .app-shell{display:block;height:auto}
  .sidebar{border-right:none}
  .workspace{min-height:700px}
  .inspector{display:block;border-left:none}
  .room-canvas{width:1000px;min-width:1000px}
}

@media print{
  body{background:#fff}
  .app-header,.sidebar,.inspector,.workspace-toolbar,.statusbar{display:none!important}
  .app-shell{display:block;height:auto}
  .workspace{display:block}
  .canvas-wrap{padding:0;overflow:visible}
  .room-canvas{
    transform:scale(.72);
    transform-origin:top left;
    border:none;
    box-shadow:none;
    background:#fff;
  }
  .layout-item.selected{outline:none}
  .resize-handle,.rotate-handle{display:none}
}