@import"https://fonts.googleapis.com/css2?family=Geist+Mono:wght@400;500;600;700&family=Geist:wght@300;400;500;600;700;800;900&display=swap";:root{--font-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "Geist Mono", monospace;--bg-app: #0b0d0e;--bg-sidebar: rgba(18, 20, 23, .85);--text-primary: #ededed;--text-muted: #888888;--border-subtle: rgba(255, 255, 255, .08);--border-focus: rgba(255, 255, 255, .18)}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{width:100%;min-height:100%;background-color:var(--bg-app);color:var(--text-primary);font-family:var(--font-sans);overflow-x:hidden;overflow-y:auto;letter-spacing:-.022em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}#root{width:100%;min-height:100%;display:flex;flex-direction:column}.font-mono,.clock-display,.move-history-notation,.fen-string{font-family:var(--font-mono)!important;font-feature-settings:"zero" 1,"tnum" 1;letter-spacing:-.035em;font-variant-numeric:tabular-nums lining-nums}.chess-board-touch-area{touch-action:manipulation;margin:0 auto}.app-shell-sidebar-layout{display:flex;min-height:100vh;width:100%;position:relative;overflow-x:hidden}.app-main-content-area{flex:1;display:flex;flex-direction:column;min-width:0;width:100%;min-height:100vh;box-sizing:border-box;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch}@keyframes slideInLeft{0%{transform:translate(-100%);opacity:.4}to{transform:translate(0);opacity:1}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulseBeacon{0%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.1)}to{opacity:1;transform:scale(1)}}.pulse-icon{animation:pulseBeacon 1.8s infinite}@media (min-width: 769px){.mobile-header{display:none!important}.app-main-content-area{margin-left:68px;transition:margin-left .22s cubic-bezier(.16,1,.3,1)}}@media (max-width: 768px){.desktop-sidebar{display:none!important}.app-shell-sidebar-layout{flex-direction:column}.app-main-content-area{margin-left:0;padding-top:56px;padding-bottom:24px;height:auto;overflow-y:visible}}@media (max-width: 960px){.arena-desktop-layout{display:flex;flex-direction:column;align-items:center;width:100%;padding:0 8px 16px;gap:10px;box-sizing:border-box}.arena-board-column{width:100%!important;display:flex;flex-direction:column;align-items:center;flex-shrink:0}.arena-side-panel{width:100%!important;max-width:520px;height:220px!important;min-height:200px!important;max-height:260px!important;flex-shrink:0}}::-webkit-scrollbar{width:6px;height:6px;background-color:transparent}::-webkit-scrollbar-track{background-color:transparent}::-webkit-scrollbar-thumb{background-color:var(--border-focus);border-radius:999px}::-webkit-scrollbar-thumb:hover{background-color:var(--text-muted)}