:root{color:#fff;background:#111;font-family:Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{background:#111;min-height:100vh;margin:0}#root{min-height:100vh}.game{flex-direction:column;align-items:center;min-height:100vh;display:flex}header{flex-direction:column;align-items:center;width:100%;padding:24px;display:flex}main{justify-content:center;width:100%;padding:0 24px 32px;display:flex}.board{box-shadow:0 12px 36px #00000059}.layout{align-items:flex-start;gap:32px;display:flex}.panel{background:#1b1b1b;border:1px solid #333;border-radius:12px;width:260px;min-height:300px;padding:20px}.panel h2{margin-top:0}@keyframes pulse{0%{box-shadow:inset 0 0 4px #ffd70040}50%{box-shadow:inset 0 0 10px #ffd7008c}to{box-shadow:inset 0 0 4px #ffd70040}}@keyframes pieceGlow{0%{text-shadow:0 0 6px gold}50%{text-shadow:0 0 16px gold}to{text-shadow:0 0 6px gold}}@keyframes attackPulse{0%{box-shadow:0 0 6px #ff505080,inset 0 0 6px #ffc8c833}50%{box-shadow:0 0 16px #ff5a5ae6,inset 0 0 12px #ffdcdc59}to{box-shadow:0 0 6px #ff505080,inset 0 0 6px #ffc8c833}}