*{box-sizing:border-box}body{margin:0;padding:0;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}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#888;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}button:hover{opacity:.9}button:active{transform:scale(.98)}input:focus,textarea:focus,select:focus{outline:none;border-color:#1976d2;box-shadow:0 0 0 2px #1976d233}.mobile-menu-toggle{display:none;background:#fff3;border:none;color:#fff;font-size:24px;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;border-radius:4px}.entity-list-container{width:350px;display:flex;flex-direction:column;border-right:1px solid #e0e0e0;background-color:#fafafa;height:100%;transition:transform .3s ease}.api-calls-panel{width:320px;background-color:#f5f5f5;border-left:1px solid #e0e0e0;display:flex;flex-direction:column;overflow:hidden}.app-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px;background-color:#1976d2;color:#fff;box-shadow:0 2px 4px #0000001a;flex-wrap:wrap;gap:12px}.header-left{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.header-right{display:flex;gap:12px;flex-wrap:wrap}@media (max-width: 1024px){.api-calls-panel,.entity-list-container{width:280px}}@media (max-width: 767px){.mobile-menu-toggle{display:flex}.app-header{padding:12px 16px;gap:8px}.header-left{gap:8px;flex:1;min-width:0}.header-left h1{font-size:18px!important}.header-right{width:100%;order:3;justify-content:flex-start}.header-right button{flex:1;min-width:0;white-space:nowrap;font-size:13px!important;padding:8px 12px!important}.header-left>div[style*="rgba(255, 255, 255, 0.2)"]{font-size:11px!important;padding:4px 8px!important}.entity-list-container{position:fixed;top:0;left:0;width:85%;max-width:320px;height:100%;z-index:999;transform:translate(-100%);box-shadow:2px 0 8px #0003}.entity-list-container.open{transform:translate(0)}.mobile-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;z-index:998;display:none}.mobile-overlay.visible{display:block}.api-calls-panel{position:fixed;top:0;right:0;width:85%;max-width:320px;height:100%;z-index:999;transform:translate(100%);transition:transform .3s ease;box-shadow:-2px 0 8px #0003}.api-calls-panel.open{transform:translate(0)}.main-content{flex:1;padding:12px!important;overflow:hidden;display:flex;flex-direction:column}.message-list-container,.send-message-form{padding:12px!important}.send-message-form .select-row{flex-direction:column!important;gap:8px!important}.send-message-form select{max-width:100%!important;min-height:44px;font-size:16px!important}.send-message-form textarea{font-size:16px!important;min-height:44px!important}.send-message-form button[type=submit]{height:44px!important;min-width:44px}button{min-height:44px}.error-banner{padding:12px 16px!important}.error-banner .error-content{flex-direction:column!important}.error-banner .error-icon{font-size:20px!important}.entity-card,.message-card{padding:16px!important}}@media (max-width: 479px){.header-left h1{font-size:16px!important}.header-right button{font-size:12px!important;padding:8px 10px!important}.entity-list-container,.api-calls-panel{width:90%;max-width:280px}}