:root{--bg-0: #0a0d12;--bg-1: #10151e;--bg-2: #161c28;--bg-3: #1e2535;--border: #26334a;--text-0: #e4eaf5;--text-1: #8fa3c2;--text-2: #4e6282;--accent: #00c8ff;--accent-dim: #0099cc;--warn: #ff8800;--danger: #ff3355;--green: #00e676;--radius: 4px;--font: "JetBrains Mono", "Fira Code", "Consolas", monospace;--hdr-h: 44px;--ftr-h: 48px;--tool-w: 220px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden}body{font-family:var(--font);font-size:12px;background:var(--bg-0);color:var(--text-0);display:flex;flex-direction:column}button{cursor:pointer;font:inherit}input,select{font:inherit}svg{display:block}.top-bar{height:var(--hdr-h);background:var(--bg-1);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:16px;padding:0 16px;flex-shrink:0;z-index:10}.app-title{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--accent);white-space:nowrap}.icon-sonar{width:24px;height:24px}.tab-nav{display:flex;gap:2px;flex:1}.tab-btn{background:transparent;border:none;border-bottom:2px solid transparent;color:var(--text-1);padding:0 14px;height:var(--hdr-h);font-size:12px;letter-spacing:.04em;text-transform:uppercase;transition:color .15s,border-color .15s}.tab-btn:hover{color:var(--text-0)}.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}.connection-status{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text-2);white-space:nowrap}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--text-2);transition:background .3s}.connection-status.connected .status-dot{background:var(--green)}.connection-status.connected 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