.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#1e1e1e,#2d2d2d)}.auth-box{background:#252526;padding:40px;border-radius:8px;box-shadow:0 4px 20px #0000004d;width:100%;max-width:400px}.auth-box h1{text-align:center;margin-bottom:10px;font-size:32px}.auth-box h2{text-align:center;margin-bottom:30px;color:#ccc;font-size:24px;font-weight:400}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:#ccc;font-size:14px}.form-group input{width:100%}.auth-box button[type=submit]{width:100%;padding:12px;font-size:16px;margin-top:10px}.auth-link{text-align:center;margin-top:20px;color:#ccc;font-size:14px}.auth-link a{color:#007acc;text-decoration:none}.auth-link a:hover{text-decoration:underline}.canvas-container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#252526;padding:20px;overflow:auto}.simulation-canvas{background:#2d2d2d;border:1px solid #3c3c3c;border-radius:4px;max-width:100%;max-height:100%}.canvas-controls{display:flex;gap:10px;align-items:center;margin-top:10px}.canvas-controls button{width:30px;height:30px;padding:0;background:#3c3c3c;color:#fff;font-size:18px}.canvas-controls span{font-size:12px;color:#ccc}.controls-container{display:flex;gap:20px;padding:10px;background:#252526;border-top:1px solid #3c3c3c}.control-group{display:flex;gap:10px}.control-group:not(:last-child){padding-right:20px;border-right:1px solid #3c3c3c}.status-panel{display:flex;flex-direction:column;height:300px;border-top:1px solid #3c3c3c;background:#1e1e1e}.status-section{padding:10px;border-bottom:1px solid #3c3c3c}.status-section h3{font-size:14px;margin-bottom:10px;color:#ccc}.status-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;font-size:12px}.status-item{display:flex;flex-direction:column}.status-item .label{color:#888;font-size:11px}.status-item .value{color:#fff;font-weight:500;font-family:Courier 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a:hover{background:#3c3c3c;color:#fff}.header-right{display:flex;align-items:center;gap:15px}.username{font-size:14px;color:#ccc}.simulator-container{display:flex;flex-direction:column;height:100vh;background:#1e1e1e}.simulator-main{display:flex;flex:1;overflow:hidden}.left-panel{width:50%;display:flex;flex-direction:column;border-right:1px solid #3c3c3c}.right-panel{width:50%;display:flex;flex-direction:column}.editor-header{display:flex;gap:10px;padding:10px;background:#252526;border-bottom:1px solid #3c3c3c}.editor-header select{flex:1}.editor-container{flex:1;overflow:hidden}.error-message{padding:10px;background:#5a1d1d;color:#f48771;border-top:1px solid #3c3c3c;font-size:12px;max-height:100px;overflow-y:auto;white-space:pre-wrap;font-family:Courier New,monospace}.programs-container{display:flex;flex-direction:column;height:100vh}.programs-content{flex:1;padding:30px;overflow-y:auto}.programs-content h2{margin-bottom:30px;font-size:28px}.loading{text-align:center;padding:40px;color:#888}.empty-state{text-align:center;padding:60px 20px;color:#888}.empty-state p:first-child{font-size:18px;margin-bottom:10px}.programs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:20px}.program-card{background:#252526;border:1px solid #3c3c3c;border-radius:8px;padding:20px;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.program-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0000004d}.program-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.program-header h3{font-size:18px;margin:0}.language-badge{padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}.language-badge.c{background:#5c6bc0;color:#fff}.language-badge.js{background:#f0db4f;color:#323330}.program-meta{display:flex;flex-direction:column;gap:4px;margin-bottom:15px;font-size:12px;color:#888}.program-code{flex:1;background:#1e1e1e;border:1px solid #3c3c3c;border-radius:4px;padding:12px;margin-bottom:15px;overflow:hidden}.program-code pre{margin:0;font-family:Courier New,monospace;font-size:11px;color:#ccc;white-space:pre-wrap;word-break:break-word}.program-actions{display:flex;gap:10px}.program-actions button{flex:1;font-size:13px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#1e1e1e;color:#fff}code{font-family:Courier New,monospace}#root{width:100vw;height:100vh;overflow:hidden}button{cursor:pointer;border:none;padding:8px 16px;border-radius:4px;font-size:14px;font-weight:500;transition:all .2s}button:hover:not(:disabled){opacity:.8}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:#007acc;color:#fff}button.success{background:#28a745;color:#fff}button.danger{background:#dc3545;color:#fff}button.secondary{background:#6c757d;color:#fff}input,select,textarea{padding:8px 12px;border:1px solid #3c3c3c;border-radius:4px;background:#2d2d2d;color:#fff;font-size:14px}input:focus,select:focus,textarea:focus{outline:none;border-color:#007acc}.container{max-width:1200px;margin:0 auto;padding:20px}.error{color:#f48771;font-size:14px;margin-top:8px}.success{color:#89d185;font-size:14px;margin-top:8px}