:root{--board-size: 4rem;--stroke-width: 16;--stroke-opacity: 1;--piece-contrast: 1;--piece-brightness: 1}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5;min-height:100vh;background-color:#030712;color:#f3f4f6}.container{max-width:56rem;margin:0 auto;padding:1rem}.page-header{text-align:center;margin-bottom:1.5rem}.header-content{display:flex;align-items:center;justify-content:center;gap:1.5rem}.header-logo{width:80px;height:80px;border-radius:12px;box-shadow:0 4px 6px -1px #0000001a}.header-text{text-align:left}.page-title{font-size:2.25rem;font-weight:700;color:#fbbf24;margin-bottom:.5rem}.subtitle{font-size:.875rem;color:#9ca3af}.game-info{display:flex;justify-content:space-around;align-items:center;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem;padding:1rem;background-color:#111827;border-radius:.5rem;box-shadow:0 10px 15px -3px #0000001a}.turn-indicator{font-size:1.25rem;font-weight:600}.turn-indicator.white-turn{color:#f3f4f6}.turn-indicator.black-turn{color:#6b7280}.action-type{padding:.5rem 1rem;border-radius:.25rem;font-weight:500}.action-type.ban{background:linear-gradient(to right,#7f1d1d,#b91c1c);color:#fff}.action-type.move{background:linear-gradient(to right,#1e3a8a,#1d4ed8);color:#fff}.game-status{font-size:1.125rem;font-weight:600;padding:.5rem 1rem;border-radius:.25rem}.game-status.checkmate{background:linear-gradient(to right,#581c87,#7e22ce);color:#fff}.game-status.check{background-color:#dc2626;color:#fff}.game-status.normal{color:#9ca3af}.board-container{display:flex;justify-content:center;align-items:center;margin-bottom:2rem}.board-wrapper{position:relative;background-color:#1f2937;padding:2rem;border-radius:.5rem;box-shadow:0 25px 50px -12px #00000040}.chess-board{display:grid;grid-template-columns:repeat(8,1fr);gap:0;border:4px solid #374151;border-radius:.25rem}.board-square{width:var(--board-size);height:var(--board-size);display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;transition:all .2s}.square-light{background-color:#fef3c7}.square-dark{background-color:#b45309}.square-selected{position:relative;z-index:10;box-shadow:0 0 0 4px #22d3ee inset;transform:scale(1.05)}.square-legal-move{position:relative;box-shadow:0 0 0 4px #34d399 inset}.square-last-move-from{position:relative;background-image:linear-gradient(#fbbf244d,#fbbf244d)}.square-last-move-to{position:relative;background-image:linear-gradient(#fb923c4d,#fb923c4d)}.square-banned{position:relative;background-image:linear-gradient(#dc262666,#dc262666)}.square-can-select{cursor:pointer}.square-can-select:hover{filter:brightness(1.25)}.square-inactive{opacity:.4}.move-dot{position:absolute;width:30%;height:30%;background-color:#34d399cc;border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%);pointer-events:none;z-index:5}.ban-overlay{position:absolute;inset:0;pointer-events:none}.ban-x{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#dc2626;font-size:3rem;font-weight:700;opacity:.7;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.piece-wrapper{display:flex;align-items:center;justify-content:center}.chess-piece{width:calc(var(--board-size) * .7);height:calc(var(--board-size) * .7);-webkit-user-select:none;user-select:none;pointer-events:none}.piece-white,.piece-black{filter:contrast(var(--piece-contrast)) brightness(var(--piece-brightness))}.rank-labels{position:absolute;left:-1.5rem;top:0;display:flex;flex-direction:column;height:100%;justify-content:space-around;font-size:.875rem;color:#9ca3af;font-weight:500}.file-labels{position:absolute;bottom:-1.5rem;left:0;right:0;display:flex;justify-content:space-around;font-size:.875rem;color:#9ca3af;font-weight:500}.controls{display:flex;justify-content:center;gap:.75rem;margin-bottom:1.5rem}.btn{padding:.625rem 1.5rem;border:none;border-radius:.25rem;font-weight:500;cursor:pointer;transition:all .2s;background-color:#374151;color:#fff}.btn:hover{background-color:#4b5563}.btn-primary{background-color:#2563eb}.btn-primary:hover{background-color:#1d4ed8}.btn-success{background-color:#059669}.btn-success:hover{background-color:#047857}.btn-active{background-color:#fbbf24;color:#111827}.history-section{margin-top:2rem;padding:1rem;background-color:#111827;border-radius:.5rem}.history-title{font-size:1.125rem;font-weight:600;margin-bottom:1rem;color:#d1d5db}.move-history{max-height:15rem;overflow-y:auto;font-family:Courier New,monospace;font-size:.875rem}.move-entry{padding:.25rem .5rem;color:#9ca3af}.move-entry:hover{background-color:#1f2937;color:#f3f4f6}.ban-entry{color:#ef4444;font-style:italic}.theme-carousel{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem;background:#1f293780;border-radius:.5rem;border:1px solid rgba(75,85,99,.5)}.carousel-arrow{background:#374151;border:1px solid #4b5563;color:#d1d5db;width:32px;height:32px;border-radius:.375rem;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .2s ease;flex-shrink:0}.carousel-arrow:hover{background:#4b5563;border-color:#6b7280;transform:scale(1.05)}.carousel-arrow:active{transform:scale(.95)}.carousel-display{display:flex;flex-direction:column;align-items:center;gap:.25rem;color:#d1d5db;font-size:.875rem;flex:1;justify-content:center;min-width:250px}.carousel-label{font-weight:500;opacity:.8}.carousel-value{font-weight:600;font-size:1rem;color:#8b5cf6}.carousel-header{display:flex;align-items:center;gap:.5rem}.carousel-description{font-size:.75rem;color:#9ca3af;font-style:italic;margin-top:.25rem;max-width:220px;line-height:1.3}.dot{width:.75rem;height:.75rem;border-radius:50%;display:inline-block}.dot-white{background-color:#fff;border:1px solid #374151}.dot-black{background-color:#111827;border:1px solid #6b7280}.game-over{padding:1.5rem;background:linear-gradient(to right,#581c87,#7e22ce);color:#fff;border-radius:.5rem;text-align:center;margin:1rem 0}.game-over h2{font-size:1.875rem;font-weight:700;margin-bottom:.5rem}.game-over p{font-size:1.125rem}.controls-section{margin-bottom:1.5rem;text-align:center}.controls-toggle{margin-bottom:1rem}.controls-panel{background-color:#111827;border-radius:.5rem;padding:1.5rem;display:flex;flex-wrap:wrap;gap:1.5rem;justify-content:center;margin-bottom:1rem}.control-group{display:flex;flex-direction:column;gap:.5rem;min-width:200px}.control-label{font-size:.875rem;color:#d1d5db;font-weight:500}.control-slider{width:100%;height:6px;background:#374151;border-radius:3px;outline:none;-webkit-appearance:none;appearance:none}.control-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;background:#fbbf24;border-radius:50%;cursor:pointer}.control-slider::-moz-range-thumb{width:18px;height:18px;background:#fbbf24;border-radius:50%;cursor:pointer;border:none}.control-color{width:100%;height:40px;border:2px solid #374151;border-radius:4px;cursor:pointer;background:transparent}.control-color::-webkit-color-swatch-wrapper{padding:2px}.control-color::-webkit-color-swatch{border-radius:4px;border:none}