*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;display:flex;align-items:center;justify-content:center;color:#333}#root{width:100%;max-width:500px;padding:20px}.game-container{background:rgba(255,255,255,.95);border-radius:24px;padding:40px 30px;box-shadow:0 20px 60px #0000004d;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.header{text-align:center;margin-bottom:30px}.title{font-size:2.5rem;font-weight:800;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.subtitle{color:#666;font-size:1.1rem;font-weight:400}.status-bar{background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%);border-radius:16px;padding:20px;margin-bottom:30px;text-align:center}.status-text{font-size:1.2rem;font-weight:600;color:#333;margin-bottom:8px}.player-indicator{display:flex;justify-content:center;align-items:center;gap:20px;margin-top:12px}.player-badge{display:flex;flex-direction:column;align-items:center;padding:12px 24px;border-radius:12px;background:white;box-shadow:0 4px 12px #0000001a;transition:all .3s ease;min-width:100px}.player-badge.active{transform:translateY(-4px);box-shadow:0 8px 24px #667eea4d;border:2px solid #667eea}.player-symbol{font-size:2rem;font-weight:800;margin-bottom:4px}.player-label{font-size:.75rem;text-transform:uppercase;font-weight:600;color:#888;letter-spacing:.5px}.game-board{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:30px;padding:20px;background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%);border-radius:20px}.square{aspect-ratio:1;background:white;border:none;border-radius:16px;font-size:3.5rem;font-weight:800;cursor:pointer;transition:all .2s ease;box-shadow:0 4px 12px #0000001a;display:flex;align-items:center;justify-content:center}.square:hover:not(.disabled){transform:translateY(-4px);box-shadow:0 8px 24px #667eea4d}.square.active-x{color:#667eea;background:linear-gradient(135deg,rgba(102,126,234,.1) 0%,rgba(118,75,162,.1) 100%)}.square.active-o{color:#e91e63;background:linear-gradient(135deg,rgba(233,30,99,.1) 0%,rgba(236,64,122,.1) 100%)}.square.disabled{cursor:not-allowed;opacity:.6}.square.winning{animation:pulse 1s ease infinite;background:linear-gradient(135deg,#ffd700 0%,#ffed4e 100%)!important;color:#333!important}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.controls{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}.btn{padding:16px 32px;font-size:1rem;font-weight:600;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;font-family:inherit;box-shadow:0 4px 12px #00000026;text-transform:uppercase;letter-spacing:.5px}.btn-primary{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);color:#fff}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px #667eea66}.btn-secondary{background:#f0f0f0;color:#666}.btn-secondary:hover{background:#e0e0e0;transform:translateY(-2px)}.score-board{display:flex;justify-content:space-around;margin-bottom:24px;background:#f8f9fa;border-radius:16px;padding:20px}.score-item{text-align:center}.score-label{font-size:.875rem;font-weight:500;color:#888;margin-bottom:8px}.score-value{font-size:2rem;font-weight:800;color:#333}.game-over-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.8);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:white;border-radius:24px;padding:40px;text-align:center;max-width:400px;width:90%;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-title{font-size:2.5rem;font-weight:800;margin-bottom:12px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.modal-message{font-size:1.2rem;color:#666;margin-bottom:24px}@media (max-width: 480px){.game-container{padding:30px 20px}.title{font-size:2rem}.square{font-size:2.5rem}.player-badge{padding:10px 16px;min-width:80px}.player-symbol{font-size:1.5rem}}