:root{--accent:#e040fb;--bg-dark:#0a0e27;--panel-bg:rgba(15, 20, 40, 0.95);--text-main:#ffffff;--text-dim:rgba(255, 255, 255, 0.7);--blue-glow:rgba(100, 181, 246, 0.4)}body{background:linear-gradient(rgba(255,255,255,.015) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.015) 1px,transparent 1px),linear-gradient(135deg,#0a0e27 0%,#1a1f3a 25%,#0f1629 50%,#1e2a4a 75%,#0a0e27 100%);background-size:60px 60px,60px 60px,100% 100%;background-attachment:fixed;color:#fff;font-family:maven pro,sans-serif;min-height:100vh}.actionBtn{--btn-color-top:#49a8de;--btn-color-bottom:#2e7ca8;--btn-text-color:#ffffff;--btn-color-top-hover:#59b8ef;display:flex;align-items:center;justify-content:center;gap:10px;width:100%;background-color:var(--btn-color-top);color:var(--btn-text-color);border:none;border-radius:12px;padding:16px 32px;font-size:20px;font-weight:700;text-transform:uppercase;font-family:segoe ui,Tahoma,Geneva,Verdana,sans-serif;cursor:pointer;box-shadow:0 6px 0 var(--btn-color-bottom);transition:transform .1s ease-out,box-shadow .1s ease-out;position:relative}.actionBtn svg{flex-shrink:0}.actionBtn:hover{background-color:var(--btn-color-top-hover);transform:translateY(-2px);box-shadow:0 8px 0 var(--btn-color-bottom)}.actionBtn:active{transform:translateY(6px);box-shadow:0 0 0 var(--btn-color-bottom);transition-duration:.05s}.actionBtn-green{--btn-color-top:#43a047;--btn-color-bottom:#2e7d32;--btn-color-top-hover:#4caf50}.actionBtn-blue{--btn-color-top:#1e88e5;--btn-color-bottom:#1565c0;--btn-color-top-hover:#2196f3}.actionBtn.is-searching{cursor:wait;background-color:#95a5a6;box-shadow:0 6px #7f8c8d;color:#ecf0f1}.actionBtn.is-searching:hover,.actionBtn.is-searching:active{transform:translateY(0);box-shadow:0 6px #7f8c8d}.container{max-width:900px;margin:40px auto;background:var(--panel-bg);border-radius:20px;padding:32px;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);color:var(--text-main)}h1{text-align:center;margin-bottom:24px;background:linear-gradient(135deg,#fff 0%,#aaa 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-weight:800;letter-spacing:-1px}#status,#game-status{text-align:center;margin:16px 0;font-size:1.1em;font-weight:500;min-height:1.5em}.board{display:grid;grid-template-columns:repeat(3,100px);grid-template-rows:repeat(3,100px);gap:12px;justify-content:center;margin:24px auto;padding:16px;background:rgba(0,0,0,.3);border-radius:16px;border:1px solid rgba(255,255,255,5%);width:fit-content}.cell{width:100px;height:100px;background:rgba(255,255,255,3%);border-radius:12px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);border:1px solid rgba(255,255,255,.1);font-size:3em;font-weight:900;color:var(--text-main)}.cell:hover{background:rgba(255,255,255,8%);transform:scale(1.05);box-shadow:0 0 15px var(--blue-glow)}.cell.x{color:#64b5f6;text-shadow:0 0 10px rgba(100,181,246,.5)}.cell.o{color:#f06292;text-shadow:0 0 10px rgba(240,98,146,.5)}#restart{display:block;margin:20px auto 0;padding:12px 32px;font-size:1em;font-weight:600;border-radius:12px;border:none;background:linear-gradient(135deg,#1976d2 0%,#1565c0 100%);color:#fff;cursor:pointer;transition:all .2s;box-shadow:0 4px 15px rgba(25,118,210,.3)}#restart:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(25,118,210,.4)}.mode-button{transition:all .2s}.mode-button:hover{transform:translateY(-2px);filter:brightness(1.1)}@keyframes pulse{0%{transform:scale(.95);opacity:.5}50%{transform:scale(1);opacity:1}100%{transform:scale(.95);opacity:.5}}.matchmaking-pulse{animation:pulse 2s infinite ease-in-out}#leaderboard-list li{background:rgba(255,255,255,2%);border:1px solid rgba(255,255,255,5%);border-radius:8px;padding:10px 16px;margin-bottom:8px;transition:background .2s}#leaderboard-list li:hover{background:rgba(255,255,255,5%)}@media(max-width:600px){.container{margin:20px 10px;padding:20px}.board{grid-template-columns:repeat(3,80px);grid-template-rows:repeat(3,80px);gap:8px;padding:12px}.cell{width:80px;height:80px;font-size:2.2em}}@media(max-width:400px){.board{grid-template-columns:repeat(3,70px);grid-template-rows:repeat(3,70px);gap:6px;padding:10px}.cell{width:70px;height:70px;font-size:1.8em}}