:root{--apple-red: #ff3b30;--apple-green: #34c759;--apple-blue: #007aff;--apple-gray: #8e8e93;--apple-light-gray: #f2f2f7;--apple-dark-gray: #1c1c1e;--apple-white: #ffffff;--apple-shadow: rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Roboto,sans-serif;background:linear-gradient(135deg,var(--apple-light-gray) 0%,#ffffff 100%);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.container{text-align:center;max-width:500px;width:100%}h1{color:var(--apple-dark-gray);font-size:2.5rem;font-weight:600;margin-bottom:2rem;text-shadow:0 2px 4px var(--apple-shadow)}.game-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:1rem;background:var(--apple-white);border-radius:16px;box-shadow:0 4px 12px var(--apple-shadow)}#status{font-size:1.2rem;font-weight:500;color:var(--apple-dark-gray)}#reset-btn{background:linear-gradient(135deg,var(--apple-blue) 0%,#0051d5 100%);color:var(--apple-white);border:none;padding:12px 24px;border-radius:20px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 8px #007aff4d}#reset-btn:hover{transform:translateY(-2px);box-shadow:0 4px 16px #007aff66}#reset-btn:active{transform:translateY(0)}.game-board{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;background:var(--apple-white);padding:20px;border-radius:20px;box-shadow:0 8px 24px var(--apple-shadow);max-width:400px;margin:0 auto}.cell{aspect-ratio:1;background:var(--apple-light-gray);border:2px solid transparent;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:3rem;font-weight:600;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.cell:hover{background:#e5e5ea;transform:scale(1.05);box-shadow:0 4px 12px var(--apple-shadow)}.cell:active{transform:scale(.95)}.cell.x{color:var(--apple-green);background:linear-gradient(135deg,rgba(52,199,89,.1) 0%,rgba(52,199,89,.2) 100%);border-color:var(--apple-green)}.cell.o{color:var(--apple-red);background:linear-gradient(135deg,rgba(255,59,48,.1) 0%,rgba(255,59,48,.2) 100%);border-color:var(--apple-red)}.cell.win{background:linear-gradient(135deg,var(--apple-blue) 0%,#0051d5 100%);color:var(--apple-white);animation:pulse .6s ease-in-out}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}.cell:after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:radial-gradient(circle,rgba(255,255,255,.3) 0%,transparent 70%);border-radius:50%;transform:translate(-50%,-50%);transition:all .5s ease}.cell:not(:empty):after{width:100%;height:100%}@media (max-width: 480px){h1{font-size:2rem}.game-info{flex-direction:column;gap:1rem}.cell{font-size:2.5rem}}