*{box-sizing:border-box;margin:0;padding:0}html,body,main,#main{height:100%;margin:0}body{background:var(--primary-color-1,#111);color:var(--secondary-color-4,#eee);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif}.app-layout{flex-direction:column;width:100vw;height:100vh;display:flex;overflow:hidden}.app-body{flex:1;min-height:0;display:flex;overflow:hidden}.properties-panel{background:var(--primary-color-3,#1a1a2e);border-right:1px solid var(--primary-color-6,#333);flex-direction:column;gap:4px;width:220px;padding:8px;display:flex;overflow-y:auto}.viewport-wrapper{flex:1;min-width:0;position:relative}.viewport{cursor:grab;width:100%;height:100%;position:relative;overflow:hidden}.viewport:active{cursor:grabbing}#cad-canvas{background:#000;width:100%;height:100%;display:block}.sidebar-toggle{z-index:10;background:var(--primary-color-3,#1a1a2e);border:1px solid var(--primary-color-6,#333);color:var(--secondary-color-6,#888);cursor:pointer;border-left:none;border-radius:0 6px 6px 0;padding:12px 4px;font-size:10px;line-height:1;position:absolute;top:50%;left:0;transform:translateY(-50%)}.sidebar-toggle:hover{color:var(--secondary-color,#fff);background:var(--primary-color-5,#252540)}.sidebar-toggle--open{left:0}.loading-overlay{background:var(--primary-color,#0a0a12);z-index:10;flex-direction:column;justify-content:center;align-items:center;gap:16px;display:flex;position:absolute;inset:0}.loading-overlay p{color:var(--secondary-color-6,#556);letter-spacing:.5px;font-size:13px}.loading-spinner{border:3px solid var(--primary-color-5,#222);border-top-color:var(--focused-border-color,#5b9bd5);border-radius:50%;width:32px;height:32px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.selection-box{pointer-events:none;z-index:5;background:rgba(91,155,213,.12);border:1px solid rgba(91,155,213,.8);position:absolute}.sketch-dim-label{color:var(--secondary-color-3,#ccc);border:1px solid var(--secondary-color-6,#555);pointer-events:none;z-index:6;white-space:nowrap;-webkit-user-select:none;user-select:none;background:rgba(30,30,50,.85);border-radius:3px;padding:2px 6px;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,monospace;font-size:11px;position:absolute;transform:translate(-50%,-50%)}.sketch-dim-label--clickable{pointer-events:auto;cursor:pointer}.sketch-dim-label--clickable:hover{border-color:var(--focused-border-color,#5b9bd5);background:rgba(30,30,60,.95)}.sketch-dim-label--focused{border-color:var(--focused-border-color,#5b9bd5);pointer-events:auto;background:rgba(30,30,60,.95)}.sketch-dim-input{width:60px;color:var(--secondary-color,#fff);text-align:center;background:0 0;border:none;outline:none;padding:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,monospace;font-size:12px}.sketch-dim-input:focus{color:var(--focused-border-color,#5b9bd5)}.toast-container{z-index:10000;flex-direction:column;gap:8px;max-width:380px;display:flex;position:fixed;bottom:16px;right:16px}.toast-list{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.toast-item{animation:.2s ease-out toast-slide-in}@keyframes toast-slide-in{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.toast{border:1px solid var(--primary-color-6,#333);background:var(--primary-color-4,#1a1a1a);color:var(--secondary-color-3,#ccc);border-radius:6px;align-items:flex-start;gap:10px;padding:10px 14px;font-size:12px;line-height:1.4;display:flex;box-shadow:0 4px 12px rgba(0,0,0,.4)}.toast[data-type=error]{background:rgba(230,77,77,.1);border-color:rgba(230,77,77,.4)}.toast[data-type=warning]{background:rgba(230,179,51,.1);border-color:rgba(230,179,51,.4)}.toast[data-type=success]{background:rgba(77,204,102,.1);border-color:rgba(77,204,102,.4)}.toast[data-type=info]{background:rgba(91,155,213,.1);border-color:rgba(91,155,213,.4)}.toast-content{flex:1}.toast-title{color:var(--secondary-color,#fff);font-weight:600}.toast-description{color:var(--secondary-color-5,#888);margin-top:4px}.toast-close{color:var(--secondary-color-6,#555);cursor:pointer;background:0 0;border:none;padding:0 2px;font-size:16px;line-height:1}.toast-close:hover{color:var(--secondary-color-3,#ccc)}