:root{--bg-light:#f0f2f5;--panel-bg:#fff;--text-main:#1a1a2e;--accent:#6c5ce7;--accent-hover:#5a4bd1;--success:#00b894;--danger:#d63031;--wire-hover:#fbbf24;--border:#dfe6e9}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{background-color:var(--bg-light);color:var(--text-main);height:100%;margin:0;font-family:Segoe UI,-apple-system,BlinkMacSystemFont,sans-serif}header{border-bottom:2px solid var(--accent);background-color:#1e272e;flex-wrap:wrap;flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;padding:10px 16px;display:flex;box-shadow:0 2px 8px #00000040}header h1{color:#fff;white-space:nowrap;margin:0;font-size:1.1rem;font-weight:700}.controls{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.controls button{background-color:var(--accent);color:#fff;cursor:pointer;white-space:nowrap;touch-action:manipulation;border:none;border-radius:6px;padding:8px 14px;font-size:.82rem;font-weight:600;transition:background .2s,transform .1s}.controls button:hover{background-color:var(--accent-hover);transform:translateY(-1px)}.controls button.active{background-color:var(--danger);color:#fff}.sim-panel{background-color:#f0f2f5;width:100%;height:100%;position:relative;overflow:hidden}svg{filter:none;display:block}.ic-body{rx:6;ry:6;stroke-width:1.5px}.ic-text{text-anchor:middle;font-family:ui-monospace,monospace;font-size:14px;font-weight:600}.wire{fill:none;stroke-width:4px;stroke-linecap:round;cursor:pointer;transition:stroke-width .15s,filter .15s}.wire:hover{stroke-width:7px;filter:drop-shadow(0 0 6px var(--wire-hover))}.switch-rect{cursor:pointer;touch-action:manipulation;transition:fill .2s}.led-circle{transition:fill .2s,filter .2s}.code-panel{background:#1e272e;flex-direction:column;width:100%;height:100%;display:flex}.code-header{color:#f5f6fa;background:#2d3436;flex-wrap:wrap;flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;padding:10px 14px;display:flex}@media (max-width:768px){header{padding:8px 12px}header h1{font-size:.95rem}.controls button{padding:7px 10px;font-size:.78rem}}