*{box-sizing:border-box}body{margin:0;background:#12100e}.page-ambient{min-height:100vh;background:radial-gradient(ellipse 80% 60% at 50% 40%,rgba(201,162,39,.06) 0%,transparent 60%),radial-gradient(ellipse 100% 100% at 50% 50%,#1e1b17,#12100e 70%)}.page-ambient.zen{background:radial-gradient(ellipse 70% 50% at 50% 45%,rgba(201,162,39,.04) 0%,transparent 55%),#141210}@keyframes checkPulse{0%,to{box-shadow:inset 0 0 #b5453d00}50%{box-shadow:inset 0 0 18px 4px #b5453dbf}}.square-check{animation:checkPulse 1.2s ease-in-out infinite}@keyframes captureFlash{0%{background-color:#b5453d73!important}to{background-color:transparent}}.square-capture-flash{animation:captureFlash .35s ease-out}@keyframes confettiFall{0%{transform:translateY(-10px) rotate(0);opacity:1}to{transform:translateY(420px) rotate(720deg);opacity:0}}.confetti-piece{position:absolute;width:8px;height:8px;border-radius:1px;animation:confettiFall 2.2s ease-in forwards;pointer-events:none}@keyframes overlayIn{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}.game-end-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#00000073;z-index:15;border-radius:4px;animation:overlayIn .4s ease-out}.game-end-card{background:#211e19f2;border:2px solid #C9A227;border-radius:14px;padding:20px 28px;text-align:center;box-shadow:0 8px 32px #00000080}.game-end-title{font-family:Georgia,serif;font-size:1.5rem;color:#f7f3e8;margin:0 0 6px}.game-end-sub{font-size:.85rem;color:#b8af9c;margin:0}.board-coord{position:absolute;font-size:.58rem;font-weight:600;pointer-events:none;-webkit-user-select:none;user-select:none;line-height:1;z-index:2}.board-coord-file{bottom:2px;right:4px}.board-coord-rank{top:2px;left:4px}@keyframes clockTick{0%,to{opacity:1}50%{opacity:.85}}.clock-active-pulse{animation:clockTick 1s ease-in-out infinite}