.ca-main{flex:1;display:flex;flex-direction:column;padding:10px 12px;gap:6px;min-width:0;overflow:hidden;}
.ca-topbar{display:flex;justify-content:flex-end;gap:5px;}
.ca-mode-btn{width:26px;height:26px;border-radius:6px;background:rgba(255,255,255,0.08);border:0.5px solid rgba(255,255,255,0.12);color:rgba(255,255,255,0.6);cursor:pointer;font-size:12px;}
.ca-mode-btn:hover{background:rgba(255,255,255,0.15);}
.ca-mode-btn.active{background:rgba(79,70,229,0.4);border-color:rgba(79,70,229,0.6);color:#fff;}
.ca-mem-row{font-size:9px;color:#a5b4fc;min-height:12px;text-align:right;padding:0 4px;}
.ca-expr{text-align:right;font-size:11px;color:rgba(255,255,255,0.35);min-height:18px;padding:0 4px;}
.ca-disp{background:rgba(0,0,0,0.45);border-radius:9px;padding:12px 14px;text-align:right;font-size:24px;font-weight:500;color:#fff;min-height:58px;border:0.5px solid rgba(255,255,255,0.1);display:flex;align-items:center;justify-content:flex-end;word-break:break-all;}
.ca-sci-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;}
.ca-sci-keys.hidden{display:none;}
.ca-key.ca-sci{background:rgba(255,255,255,0.06);font-size:11px;padding:6px 0;}
.ca-mem-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;}
.ca-key.ca-mem{background:rgba(255,255,255,0.06);font-size:10px;padding:6px 0;color:#a5b4fc;}
.ca-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;flex:1;}
.ca-key{border-radius:9px;border:none;cursor:pointer;font-size:15px;font-weight:500;background:rgba(255,255,255,0.1);color:#fff;}
.ca-key:hover{filter:brightness(1.15);}
.ca-key.op{background:rgba(79,70,229,0.6);}
.ca-key.eq{background:rgba(99,102,241,0.85);font-size:18px;}
.ca-history-panel{width:150px;flex-shrink:0;border-left:0.5px solid rgba(255,255,255,0.1);display:flex;flex-direction:column;overflow:hidden;}
.ca-history-panel.hidden{display:none;}
.ca-history-title{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;font-size:10px;color:rgba(255,255,255,0.5);flex-shrink:0;}
.ca-history-clear{background:none;border:none;color:#a5b4fc;font-size:9px;cursor:pointer;}
.ca-history-list{flex:1;overflow-y:auto;padding:0 8px 8px;}
.ca-history-item{display:flex;flex-direction:column;padding:6px 4px;border-bottom:0.5px solid rgba(255,255,255,0.06);}
.ca-history-expr{font-size:9px;color:rgba(255,255,255,0.4);}
.ca-history-result{font-size:12px;color:rgba(255,255,255,0.85);}
.ca-history-empty{font-size:10px;color:rgba(255,255,255,0.3);text-align:center;padding:16px 4px;}