:root{color:#fff;--page-wood-light:#d9b56f;--page-wood-dark:#684619;font-family:Arial,sans-serif}body{background:repeating-linear-gradient(90deg, #ffffff05 0, #ffffff05 2px, #46261008 3px, #46261008 7px), linear-gradient(180deg, var(--page-wood-light), var(--page-wood-dark));color:#fff;justify-content:center;align-items:center;min-height:100vh;margin:0;font-family:Arial,sans-serif;display:flex}main{justify-content:center;align-items:center;display:flex}.chess-board{border:4px solid #444;grid-template-rows:repeat(8,100px);grid-template-columns:repeat(8,100px);display:grid}.square{justify-content:center;align-items:center;font-size:12px;display:flex}.light{color:#000;background:#f0d9b5}.dark{color:#fff;background:#b58863}.piece{-webkit-user-select:none;user-select:none;cursor:grab;font-size:52px;line-height:1}.piece.white{color:#fff;text-shadow:0 0 2px #000}.piece.black{color:#000;text-shadow:0 0 2px #fff}.piece:active{cursor:grabbing}.selected{outline-offset:-4px;outline:4px solid #4caf50}.room-dialog{box-sizing:border-box;background:#2b2b2b;border-radius:12px;gap:14px;width:320px;padding:24px;display:grid;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%)}.room-dialog input,.room-dialog button{padding:12px;font-size:16px}.separator{text-align:center;opacity:.7}.game-menu{z-index:20;position:fixed;top:18px;left:18px}.menu-toggle{color:#fff;cursor:pointer;background:#000;border:1px solid #3f3f46;border-radius:6px;place-content:center;gap:5px;width:46px;height:46px;padding:0;display:grid}.menu-toggle span{background:currentColor;border-radius:2px;width:22px;height:2px;display:block}.menu-toggle:hover,.menu-toggle:focus{opacity:.75}.game-toolbar{background:#2b2b2b;border:1px solid #3f3f46;border-radius:8px;flex-direction:column;gap:8px;width:180px;padding:10px;display:none;position:absolute;top:calc(100% + 10px);left:0;box-shadow:0 16px 40px #00000059}.game-toolbar.open{display:flex}.game-toolbar h3{margin:0 12px 0 0}.button-31{box-sizing:border-box;color:#fff;cursor:pointer;text-align:center;text-transform:none;-webkit-user-select:none;user-select:none;touch-action:manipulation;background-color:#000;border-style:none;border-radius:4px;outline:none;width:106px;min-width:10px;max-width:none;min-height:44px;margin:0;padding:9px 10px 8px;font-family:Farfetch Basis,Helvetica Neue,Arial,sans-serif;font-size:12px;font-weight:700;line-height:1.5;display:inline-block;position:relative;overflow:hidden}.game-toolbar .button-31{width:100%}button:disabled{color:#fff;cursor:default;opacity:1;background-color:#6b7280}.button-31:hover,.button-31:focus{opacity:.75}.square.last-move{box-shadow:inset 0 0 0 4px #22c55e}