:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#0a0a0a;color:#fafafa}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:2rem 1rem}.title{font-size:2.5rem;font-weight:700;margin:2rem 0 .25rem;letter-spacing:-.03em}.subtitle{color:#ffffff80;margin:0 0 2.5rem}.game-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;max-width:700px;width:100%}.game-card{display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:2rem 1.5rem;background:#ffffff0a;border:1px solid rgba(255,255,255,.1);border-radius:1rem;cursor:pointer;transition:all .15s;color:inherit;font-family:inherit}.game-card:hover{background:#ffffff14;border-color:#fff3;transform:translateY(-2px)}.game-icon{font-size:2rem}.game-name{font-size:1.1rem;font-weight:600}.game-desc{font-size:.8rem;color:#ffffff73}.back-btn{align-self:flex-start;background:none;border:1px solid rgba(255,255,255,.15);color:#ffffffb3;padding:.4rem 1rem;border-radius:.5rem;cursor:pointer;font-family:inherit;font-size:.85rem;transition:all .15s}.back-btn:hover{background:#ffffff14;color:#fff}.game-container{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-top:1rem}.game-container h2{margin:0;font-size:1.5rem;font-weight:600}.status{font-size:1rem;color:#fff9;margin:0}.status-done{color:#4ade80;font-weight:600}.reset-btn{margin-top:.5rem;padding:.5rem 1.5rem;background:#3b82f6;color:#fff;border:none;border-radius:.5rem;font-size:.9rem;font-family:inherit;cursor:pointer;transition:background .15s}.reset-btn:hover{background:#2563eb}.ttt-board{display:grid;grid-template-columns:repeat(3,80px);grid-template-rows:repeat(3,80px);gap:4px}.ttt-cell{display:flex;align-items:center;justify-content:center;font-size:2rem;font-weight:700;background:#ffffff0f;border:1px solid rgba(255,255,255,.1);border-radius:.5rem;cursor:pointer;color:inherit;font-family:inherit;transition:background .1s}.ttt-cell:hover:not(:disabled){background:#ffffff1a}.ttt-cell:disabled{cursor:default}.cell-x{color:#60a5fa}.cell-o{color:#f472b6}.c4-board{display:grid;grid-template-columns:repeat(7,48px);grid-template-rows:repeat(6,48px);gap:4px;background:#1e3a5f;padding:8px;border-radius:.75rem}.c4-cell{width:48px;height:48px;border-radius:50%;background:#0a0a0a;border:none;cursor:pointer;transition:background .15s}.c4-cell:hover:not(:disabled){background:#1a1a1a}.c4-cell:disabled{cursor:default}.c4-red{background:#ef4444;box-shadow:inset 0 -2px 4px #0000004d}.c4-yellow{background:#eab308;box-shadow:inset 0 -2px 4px #0000004d}.chk-board{display:grid;grid-template-columns:repeat(8,52px);grid-template-rows:repeat(8,52px);border:2px solid rgba(255,255,255,.15);border-radius:.5rem;overflow:hidden}.chk-cell{width:52px;height:52px;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;padding:0;font-size:1.4rem;transition:background .1s}.chk-light{background:#3a3a3a}.chk-dark{background:#1a1a1a}.chk-selected{outline:2px solid #60a5fa;outline-offset:-2px;z-index:1}.chk-valid{position:relative}.chk-valid:after{content:"";position:absolute;width:16px;height:16px;background:#60a5fa80;border-radius:50%}.chk-piece{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;font-size:1.1rem;line-height:1}.chk-piece.black{background:#1f1f1f;border:2px solid #555;color:#ccc}.chk-piece.red{background:#b91c1c;border:2px solid #ef4444;color:#fca5a5}.chk-king{font-size:1.3rem}@media(max-width:600px){.ttt-board{grid-template-columns:repeat(3,70px);grid-template-rows:repeat(3,70px)}.c4-board{grid-template-columns:repeat(7,38px);grid-template-rows:repeat(6,38px)}.c4-cell{width:38px;height:38px}.chk-board{grid-template-columns:repeat(8,40px);grid-template-rows:repeat(8,40px)}.chk-cell{width:40px;height:40px}.chk-piece{width:30px;height:30px;font-size:.9rem}}