:root{
  --bg:#e6ecef;--panel:#fff;--line:#c7d1d8;--text:#17242d;--muted:#687985;
  --nav:#10283b;--nav2:#18384f;--accent:#168eb9;--danger:#c34444;
}
*{box-sizing:border-box}
body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}
header{height:64px;background:var(--nav);color:#fff;display:flex;align-items:center;padding:0 16px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;min-width:330px}
.brand img{width:42px;height:42px;border-radius:50%;object-fit:cover;background:#fff}
.brand h1{font-size:21px;margin:0}.brand h1 span{color:#8caf62}.version{font-size:12px;opacity:.72}
.topbar{display:flex;align-items:center;gap:6px}
.top-btn{border:1px solid rgba(255,255,255,.18);background:var(--nav2);color:#fff;border-radius:7px;padding:9px 13px;cursor:pointer}
.top-btn:hover,.top-btn.active{background:#24536f}.top-btn.primary{background:#1c6f92}
.menu-wrap{position:relative}
.dropdown{display:none;position:absolute;top:44px;left:0;z-index:100;background:#fff;color:var(--text);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 30px rgba(0,0,0,.25)}
.dropdown.show{display:block}
.dropdown.compact{min-width:220px;padding:6px}
.dropdown.compact button{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 10px;border-radius:6px;cursor:pointer}
.dropdown.compact button:hover{background:#eef4f7}
.add-panel{width:420px;padding:12px}
.category{margin-bottom:13px}.category:last-child{margin-bottom:0}
.category-title{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;margin:0 0 7px}
.item-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.add-item{display:flex;align-items:center;gap:10px;border:1px solid #d6dee4;background:#f9fbfc;border-radius:8px;padding:8px;cursor:pointer}
.add-item:hover{background:#eef6f8;border-color:#a8c7d4}
.add-icon{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:6px;color:#fff;font-weight:800;flex:none}
.app{height:calc(100vh - 64px);display:grid;grid-template-columns:300px 1fr}
aside{background:var(--panel);border-right:1px solid var(--line);padding:14px;overflow:auto}
main{position:relative;overflow:hidden;background:#dce3e8}
section{border:1px solid var(--line);border-radius:10px;background:#fff;margin-bottom:12px;overflow:hidden}
section h2{font-size:14px;margin:0;padding:10px 12px;background:#f4f7f9;border-bottom:1px solid var(--line)}
.content{padding:11px 12px}.empty{text-align:center;color:var(--muted);padding:22px 10px;font-size:13px}
.field{display:flex;flex-direction:column;margin-bottom:9px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
label{font-size:12px;color:var(--muted);margin-bottom:4px;min-height:30px;display:flex;align-items:flex-end}
input,select,button{font:inherit}
input[type=text],input[type=number],select,input:not([type]){width:100%;padding:8px;border:1px solid #b9c5cf;border-radius:7px;background:#fff}
input[type=color]{width:100%;height:36px;padding:2px;border:1px solid #b9c5cf;border-radius:7px;background:#fff}
.action-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:4px}
button{border:1px solid #b9c5cf;background:#fff;border-radius:7px;padding:8px 10px;cursor:pointer}
button:hover{background:#eef4f7}.danger{color:var(--danger)}
.hint{font-size:12px;color:var(--muted);line-height:1.45;margin-top:8px}
canvas{display:block;width:100%;height:100%}
.mapbar{position:absolute;top:12px;left:12px;display:flex;gap:6px;padding:7px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:10px;box-shadow:0 4px 15px rgba(0,0,0,.16)}
.statusbar{position:absolute;left:14px;right:14px;bottom:12px;display:flex;justify-content:space-between;padding:8px 11px;background:rgba(15,31,43,.88);color:#fff;border-radius:8px;font-size:12px}
.empty-canvas-note{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;text-align:center;color:#536674}
.empty-canvas-card{background:rgba(255,255,255,.93);border:1px solid var(--line);border-radius:14px;padding:26px 34px;box-shadow:0 8px 28px rgba(0,0,0,.12);max-width:420px}
.empty-canvas-card h3{margin:0 0 8px;font-size:22px;color:#183044}.empty-canvas-card p{margin:5px 0;font-size:14px;line-height:1.45}
.context-menu{display:none;position:absolute;z-index:120;min-width:250px;max-height:70vh;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 28px rgba(0,0,0,.28);padding:8px}
.context-menu.show{display:block}
.context-title{font-size:12px;font-weight:700;color:var(--muted);text-transform:uppercase;padding:6px 8px}
.context-menu button{display:flex;width:100%;align-items:center;gap:9px;border:0;background:none;text-align:left;padding:8px;border-radius:6px}
.context-menu button:hover{background:#eef4f7}

.layer-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}.layer-grid button{padding:7px 8px;font-size:12px}