*{box-sizing:border-box;margin:0}
body{font:14px/1.4 system-ui,sans-serif;height:100vh;display:flex;flex-direction:column;overflow:hidden}
body.light{background:#f2f2f0;color:#1e1e1e}
#topbar{display:flex;align-items:center;gap:10px;padding:8px 12px;background:#fff;border-bottom:1px solid #e6e6e6;z-index:10}
#logo{font-size:18px;font-weight:800}
#title{background:transparent;border:1px solid transparent;border-radius:6px;padding:4px 8px;font-size:14px;color:#1e1e1e;width:220px}
#title:focus{outline:none;border-color:#4262f6}
#save-status{color:#989898;font-size:12px}
.spacer{flex:1}
.btn{background:#fff;border:1px solid #d8d8d8;color:#1e1e1e;padding:6px 12px;border-radius:8px;cursor:pointer;text-decoration:none;font-size:13px}
.btn:hover{background:#f0f0f0}
.btn.primary{background:#4262f6;border-color:#4262f6;color:#fff}
.btn.mini{padding:2px 8px}
.user{color:#666}
#main{flex:1;display:flex;min-height:0;position:relative}
#toolbar{position:absolute;left:10px;top:12px;width:46px;background:#fff;border:1px solid #e6e6e6;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.08);display:flex;flex-direction:column;align-items:center;padding:6px 0;gap:4px;z-index:9}
.tool{width:36px;height:36px;background:transparent;border:none;border-radius:8px;font-size:16px;cursor:pointer;color:#1e1e1e}
.tool:hover{background:#f0f0f0}
.tool.active{background:#e8ebfb;color:#4262f6}
#toolbar hr{width:70%;border:0;border-top:1px solid #e6e6e6;margin:3px 0}
#canvas-wrap{flex:1;position:relative;overflow:hidden;background:#ededeb}
#canvas{width:100%;height:100%;display:block}
#text-editor{position:absolute;border:1px solid #4262f6;border-radius:4px;padding:6px;font:16px system-ui;background:#fffdf5;color:#1e1e1e;resize:none;z-index:6;outline:none}
#cell-editor{position:absolute;border:1px solid #4262f6;padding:4px 6px;font:14px system-ui;background:#fff;z-index:6;outline:none}
#ctx{position:absolute;top:12px;left:50%;transform:translateX(-50%);background:#fff;border:1px solid #e6e6e6;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.12);display:flex;align-items:center;gap:6px;padding:6px 10px;z-index:8}
#ctx button{background:transparent;border:none;border-radius:6px;cursor:pointer;padding:4px 7px;font-size:13px;color:#1e1e1e}
#ctx button:hover{background:#f0f0f0}
#ctx input[type=number]{width:56px;border:1px solid #d8d8d8;border-radius:6px;padding:4px}
.swatch{width:24px;height:24px;border-radius:50%;border:1px solid #ccc;cursor:pointer}
.swatch.ring{box-shadow:inset 0 0 0 3px #fff;background-clip:padding-box}
#zoombar{position:absolute;right:14px;bottom:14px;background:#fff;border:1px solid #e6e6e6;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.08);display:flex;align-items:center;gap:8px;padding:6px 10px;z-index:9}
#zoombar button{border:none;background:transparent;font-size:16px;cursor:pointer;padding:2px 6px}
.popup{position:fixed;background:#fff;border:1px solid #e6e6e6;border-radius:10px;box-shadow:0 4px 16px rgba(0,0,0,.15);padding:8px;z-index:50}
.popup.menu{display:flex;flex-direction:column;min-width:150px}
.popup.menu button{background:transparent;border:none;text-align:left;padding:8px 10px;border-radius:6px;cursor:pointer;font-size:13px}
.popup.menu button:hover{background:#f0f0f0}
.popup.pal{display:grid;grid-template-columns:repeat(4,30px);gap:6px}
.popup.pal button{width:30px;height:30px;border-radius:50%;border:1px solid rgba(0,0,0,.15);cursor:pointer}
#dash{padding:28px 40px;overflow:auto}
.dash-head{display:flex;align-items:center;justify-content:space-between;max-width:900px;margin-bottom:18px}
table.boards{width:100%;max-width:900px;border-collapse:collapse;background:#fff;border:1px solid #e6e6e6}
.boards th,.boards td{text-align:left;padding:12px 16px;border-bottom:1px solid #efefef;font-size:13px}
.boards th{color:#666;font-weight:600}
.boards a{color:#1e1e1e;text-decoration:none;font-weight:600}
.boards a:hover{color:#4262f6}
.auth-page{display:flex;align-items:center;justify-content:center;background:#f2f2f0}
.auth-card{background:#fff;border:1px solid #e6e6e6;border-radius:14px;padding:28px;width:330px;display:flex;flex-direction:column;gap:12px;color:#1e1e1e}
.auth-card h1{font-size:20px;text-align:center}
.auth-card label{display:flex;flex-direction:column;gap:4px;color:#666;font-size:12px}
.auth-card input{background:#fafafa;border:1px solid #d8d8d8;border-radius:8px;padding:8px}
.msg{color:#1a7f37;font-size:13px}.msg.err{color:#c5221f}
body.readonly #toolbar,body.readonly #ctx{display:none}
.chip{background:#e8ebfb;color:#4262f6;border-radius:12px;padding:2px 10px;font-size:12px;margin-left:4px}
#share-popup .srow{display:flex;gap:6px}
#share-popup select{border:1px solid #d8d8d8;border-radius:6px;padding:5px;background:#fff}
#share-list .srow{display:flex;align-items:center;gap:8px;padding:5px 0;font-size:13px}
#share-list .srow span{flex:1}