*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.top-nav{display:flex;align-items:center;background:#1a1a1a;border-bottom:1px solid #333;padding:0 12px;height:46px;flex-shrink:0;overflow:hidden}.nav-hamburger{display:none;background:none;border:none;color:#ccc;font-size:20px;cursor:pointer;padding:4px 8px;margin-right:8px;border-radius:4px}.nav-hamburger:hover{color:#fff;background:#333}@media(max-width:768px){.nav-hamburger{display:block}}.nav-brand{font-size:15px;font-weight:700;color:#e0e0e0;text-decoration:none;margin-right:auto;letter-spacing:-.02em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.nav-links{display:flex;gap:4px;flex-shrink:0}.nav-link{color:#999;text-decoration:none;font-size:13px;font-weight:500;padding:4px 10px;border-radius:4px;transition:color .15s ease,background .15s ease;display:flex;align-items:center}.nav-link:hover{color:#e0e0e0;background:#2a2a2a}.nav-link.active{color:#fff;background:#333}.Playground{height:100%;background-color:#2b2b2b;display:flex;overflow:hidden;color:#e0e0e0;font-size:14px}.controls-panel{background:#333;width:280px;flex-shrink:0;display:flex;flex-direction:column;overflow-y:auto;padding:20px 16px;gap:6px;border-right:1px solid #444}.settings-section{margin-top:8px}.settings-section:first-child{margin-top:0}.controls-section-title{display:flex;align-items:center;justify-content:space-between;width:100%;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;background:none;border:none;padding:6px 2px;cursor:pointer;margin:0}.controls-section-title:hover{color:#bbb}.section-chevron{font-size:10px}.section-content{display:flex;flex-direction:column;gap:6px;padding-top:4px}.controls-section-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#888;padding:0 2px;margin-bottom:4px}.control-group{display:flex;align-items:center;gap:8px;padding:4px 2px}.control-group label{font-weight:400;color:#ccc;font-size:13px;flex:1}.control-button{background:#4caf50;color:#fff;border:none;border-radius:6px;padding:8px 14px;cursor:pointer;font-size:13px;transition:background .15s ease;width:100%}.control-button:hover{background:#45a049}.reset-button{background:#e53935}.reset-button:hover{background:#c62828}.load-button{background:#1e88e5;width:auto;flex-shrink:0}.load-button:hover:not(:disabled){background:#1565c0}.load-button:disabled{background:#555;cursor:not-allowed}.preset-button{background:#555;color:#ddd;border:1px solid #666;border-radius:4px;padding:5px 10px;font-size:12px;cursor:pointer;transition:background .15s ease}.preset-button:hover{background:#666}.control-checkbox{width:16px;height:16px;cursor:pointer;accent-color:#4caf50}.control-select,.control-select-small{border:1px solid #555;border-radius:4px;padding:5px 8px;font-size:13px;background:#444;color:#ddd;cursor:pointer}.control-select:focus,.control-select-small:focus{outline:none;border-color:#4caf50}.control-select,.control-select-small{width:100%}.control-select-small:disabled{background:#3a3a3a;color:#666;cursor:not-allowed}.fen-group{flex-wrap:wrap;gap:6px}.fen-input{border:1px solid #555;border-radius:4px;padding:6px 8px;font-size:12px;font-family:monospace;background:#444;color:#ddd;width:100%}.fen-input:focus{outline:none;border-color:#4caf50}.preset-buttons{display:flex;gap:6px;flex-wrap:wrap;width:100%}.stockfish-status{font-size:12px;font-weight:500;padding:3px 8px;border-radius:4px}.stockfish-status.ready{color:#66bb6a;background:#4caf5026}.stockfish-status.loading{color:#ffa726;background:#ff980026}.board-area{flex:1;min-width:0;min-height:0;display:flex;align-items:center;justify-content:center;padding:16px}.board-container{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.move-history{background:#333;display:flex;flex-direction:column;width:220px;flex-shrink:0;border-left:1px solid #444}.move-history-header{display:flex;align-items:center;justify-content:space-between;width:100%;font-weight:600;font-size:13px;padding:10px 12px 8px;border:none;border-bottom:1px solid #444;color:#aaa;background:none;text-transform:uppercase;letter-spacing:.05em;cursor:default}.turn-indicator{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;vertical-align:middle;border:1px solid #555}.turn-indicator.white{background:#e8e8e8}.turn-indicator.black{background:#333}.mobile-expand-chevron{display:none}.move-history-list{flex:1;overflow-y:auto;padding:4px 6px;min-height:60px}.move-history-list::-webkit-scrollbar{width:6px}.move-history-list::-webkit-scrollbar-track{background:transparent}.move-history-list::-webkit-scrollbar-thumb{background:#555;border-radius:3px}.move-history-empty{color:#666;font-size:13px;text-align:center;padding:24px 0}.move-row{display:flex;align-items:center;gap:2px}.move-number{font-size:11px;color:#666;width:24px;text-align:right;flex-shrink:0;padding-right:4px;font-variant-numeric:tabular-nums}.move-button{background:none;border:none;cursor:pointer;font-size:13px;padding:3px 6px;border-radius:3px;font-family:inherit;color:#ccc;flex:1;text-align:left;white-space:nowrap}.move-button:hover{background:#444}.move-button.active{background:#4caf50;color:#fff}.move-button.current{font-weight:700;color:#fff}.move-nav{display:flex;justify-content:center;gap:4px;padding:8px;border-top:1px solid #444}.nav-button{background:#444;border:1px solid #555;border-radius:4px;cursor:pointer;font-size:14px;padding:4px 12px;color:#ccc;line-height:1;transition:background .15s ease}.nav-button:hover:not(:disabled){background:#555}.nav-button:disabled{opacity:.25;cursor:not-allowed}.pgn-actions{display:flex;gap:4px;padding:4px 8px 8px}.pgn-button{background:#444;border:1px solid #555;border-radius:4px;cursor:pointer;font-size:11px;padding:3px 10px;color:#ccc;flex:1}.pgn-button:hover:not(:disabled){background:#555}.pgn-button:disabled{opacity:.3;cursor:not-allowed}.pgn-import{display:flex;flex-direction:column;gap:4px;padding:0 8px 8px}.pgn-input{background:#222;border:1px solid #555;border-radius:4px;color:#ccc;font-size:11px;font-family:monospace;padding:6px;resize:vertical}.pgn-input:focus{outline:none;border-color:#4caf50}.controls-overlay{display:none;position:fixed;top:46px;left:0;right:0;bottom:0;background:#0009;z-index:999}@media(max-width:768px){.Playground{flex-direction:column}.controls-panel{position:fixed;top:46px;left:-100%;width:85%;max-width:320px;height:calc(100dvh - 46px);z-index:1000;border-right:1px solid #444;transition:left .3s ease;padding-top:16px}.controls-panel.controls-open{left:0}.controls-overlay{display:block}.board-area{flex:1;flex-direction:column;padding:0;gap:0;min-height:0;position:relative}.board-container{flex:1;width:100%;max-width:none;aspect-ratio:auto;height:auto;min-height:0;padding-bottom:46px}.move-history{position:fixed;bottom:0;left:0;right:0;width:100%;border-radius:0;border:none;border-top:1px solid #444;border-left:none;max-height:40%;background:#333333f2;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100}.move-history-header{display:flex;cursor:pointer;padding:8px 12px;border-bottom:none}.move-history-header:hover{color:#ccc}.mobile-expand-chevron{display:inline;font-size:10px}.move-history .move-history-list,.move-history .pgn-actions,.move-history .pgn-import{display:none}.move-history.mobile-expanded .move-history-list{display:block}.move-history.mobile-expanded .pgn-actions,.move-history.mobile-expanded .pgn-import{display:flex}.move-history.mobile-expanded .move-history-header{border-bottom:1px solid #444}.move-history-list{max-height:80px;min-height:0;padding:4px 8px;overflow-y:auto}.move-nav{padding:6px}.nav-button{padding:6px 14px}.control-group{width:100%}.fen-group{flex-direction:column;align-items:stretch;gap:6px}.fen-input{min-width:auto}.preset-buttons{justify-content:stretch}.preset-button{flex:1}}@media(min-width:769px)and (max-width:1100px){.controls-panel{width:240px;padding:16px 12px}.move-history{width:170px}}.examples-page{background-color:#1e1e1e;color:#e0e0e0;min-height:100%;overflow-y:auto;padding:32px 24px 64px}.hero-section{max-width:900px;margin:0 auto 40px;text-align:center;padding-bottom:32px;border-bottom:1px solid #333}.hero-title{font-size:36px;font-weight:800;margin:0 0 12px;color:#fff;letter-spacing:-.03em}.hero-tagline{font-size:16px;color:#aaa;line-height:1.5;max-width:540px;margin:0 auto 20px}.hero-install{display:inline-block;background:#1a1a1a;border:1px solid #3a3a3a;border-radius:8px;padding:10px 20px;margin-bottom:20px}.hero-install code{font-family:SF Mono,Fira Code,Fira Mono,Menlo,Monaco,Consolas,monospace;font-size:14px;color:#e0e0e0}.hero-links{display:flex;justify-content:center;gap:12px}.hero-link{display:inline-block;padding:8px 20px;border-radius:6px;font-size:14px;font-weight:500;text-decoration:none;color:#e0e0e0;background:#333;border:1px solid #4a4a4a;transition:background .15s ease,border-color .15s ease}.hero-link:hover{background:#444;border-color:#666}.examples-header{max-width:900px;margin:0 auto 32px;text-align:center}.examples-header h1,.examples-header h2{font-size:24px;font-weight:700;margin:0 0 8px;color:#fff}.examples-header p{font-size:15px;color:#999;margin:0}.examples-grid{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:32px}.example-card{background:#2a2a2a;border:1px solid #3a3a3a;border-radius:12px;overflow:hidden}.example-header{padding:20px 24px 12px}.example-title{font-size:20px;font-weight:600;margin:0 0 6px;color:#fff}.example-description{font-size:14px;color:#999;margin:0;line-height:1.5}.example-content{padding:0 24px 24px}.example-board{width:100%;max-width:420px;aspect-ratio:1;margin:0 auto 16px}.example-code-section{display:flex;flex-direction:column;gap:8px}.toggle-code-button{align-self:flex-start;background:#3a3a3a;color:#ccc;border:1px solid #4a4a4a;border-radius:6px;padding:6px 14px;font-size:13px;cursor:pointer;transition:background .15s ease}.toggle-code-button:hover{background:#4a4a4a}.example-code{background:#1a1a1a;border:1px solid #333;border-radius:8px;padding:16px;overflow-x:auto;font-size:13px;line-height:1.5;color:#d4d4d4;margin:0}.example-code code{font-family:SF Mono,Fira Code,Fira Mono,Menlo,Monaco,Consolas,monospace;white-space:pre}@media(max-width:768px){.examples-page{padding:20px 12px 48px}.hero-title{font-size:28px}.hero-tagline{font-size:14px}.examples-header h1,.examples-header h2{font-size:20px}.example-header{padding:16px 16px 8px}.example-content{padding:0 16px 16px}.example-board{max-width:100%}.example-code{font-size:11px;padding:12px}}