*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#0f1117;color:#e2e8f0;min-height:100vh}button{cursor:pointer;font-family:inherit}input{font-family:inherit}.app-main{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;padding:1.5rem;flex:1;max-width:1200px;margin:0 auto;width:100%}.tab-bar{display:none}.tab-panel{display:flex;flex-direction:column}@media(max-width:700px){.app-main{grid-template-columns:1fr;gap:0;padding:0}.tab-bar{display:flex;border-bottom:1px solid #2d3748;background:#1a1f2e}.tab-bar button{flex:1;background:none;border:none;border-bottom:2px solid transparent;color:#718096;font-size:.875rem;font-weight:600;padding:.75rem;transition:color .15s,border-color .15s}.tab-bar button.active{color:#e2e8f0;border-bottom-color:#4f46e5}.tab-panel{padding:1rem}.tab-panel.hidden{display:none}}