:root{color-scheme:dark;--bg: #1b1b1b;--panel-bg: #232323;--border: #3a3a3a;--text: #e5e5e5;--text-dim: #9a9a9a;--accent: #4da6ff;font-family:system-ui,-apple-system,Segoe UI,sans-serif;font-size:13px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;background:var(--bg);color:var(--text)}button,input,select{font:inherit;color:inherit}.app{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.toolbar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;padding:6px 10px;background:var(--panel-bg);border-bottom:1px solid var(--border)}.toolbar-group{display:flex;align-items:center;gap:4px}.toolbar-label{color:var(--text-dim);margin-right:4px}.toolbar button,.tool-btn,.snap-btn{background:#2b2b2b;border:1px solid var(--border);border-radius:4px;padding:5px 10px;cursor:pointer}.toolbar button:hover,.tool-btn:hover,.snap-btn:hover{background:#333}.toolbar button:disabled{opacity:.4;cursor:not-allowed}.tool-btn.active,.snap-btn.active{background:var(--accent);border-color:var(--accent);color:#06121c}.snap-group{gap:3px}.snap-btn{padding:4px 7px;font-size:11px}.app-body{flex:1;display:flex;min-height:0;min-width:0}.viewport{flex:1;position:relative;cursor:crosshair;min-width:0;min-height:0;overflow:hidden}.viewport canvas{display:block;width:100%;height:100%;touch-action:none}.sidebar{width:240px;flex-shrink:0;border-left:1px solid var(--border);background:var(--panel-bg);display:flex;flex-direction:column;overflow-y:auto}.panel{padding:10px;border-bottom:1px solid var(--border)}.panel-title{font-weight:600;margin-bottom:8px;color:var(--text-dim);text-transform:uppercase;font-size:11px;letter-spacing:.04em}.panel-empty{color:var(--text-dim);font-style:italic}.layer-list{display:flex;flex-direction:column;gap:4px}.layer-row{display:flex;align-items:center;gap:6px;padding:3px 4px;border-radius:4px}.layer-row.active{background:#2c3a47}.layer-visibility{background:none;border:none;cursor:pointer;color:var(--text);padding:0 2px}.layer-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.prop-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px}.prop-row input[type=number]{width:70px;background:#1b1b1b;border:1px solid var(--border);border-radius:3px;padding:3px 5px}.prop-row select{background:#1b1b1b;border:1px solid var(--border);border-radius:3px;padding:3px 5px}.status-bar{display:flex;align-items:center;gap:20px;padding:4px 10px;background:var(--panel-bg);border-top:1px solid var(--border);color:var(--text-dim);font-size:12px}.status-item{display:flex;align-items:center;gap:4px}.status-item input[type=number]{width:50px;background:#1b1b1b;border:1px solid var(--border);border-radius:3px;padding:2px 4px;color:var(--text)}