*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #1a1a2e;--surface: #16213e;--surface2: #0f3460;--accent: #e94560;--text: #eee;--text-muted: #999;--radius: 8px}html,body{height:100%;font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);overflow:hidden}#app-header{display:flex;align-items:center;justify-content:space-between;padding:8px 20px;background:var(--surface);border-bottom:1px solid rgba(255,255,255,.08);height:48px}#app-header h1{font-size:18px;font-weight:600;letter-spacing:1px}.header-actions{display:flex;align-items:center;gap:8px}#btn-lang,#btn-settings{background:none;border:1px solid rgba(255,255,255,.15);color:var(--text-muted);font-size:13px;cursor:pointer;padding:4px 10px;border-radius:var(--radius);transition:background .2s}#btn-lang:hover,#btn-settings:hover{background:#ffffff1a}#app-main{display:flex;height:calc(100vh - 48px)}#panel-left,#panel-right{width:240px;min-width:200px;background:var(--surface);padding:16px;display:flex;flex-direction:column;gap:16px;overflow-y:auto;border-right:1px solid rgba(255,255,255,.05)}#panel-right{border-right:none;border-left:1px solid rgba(255,255,255,.05)}.panel-card{background:#ffffff08;border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:16px}.panel-card h2{font-size:12px;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-muted);margin-bottom:12px;padding-left:10px;border-left:3px solid var(--accent)}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.card-header h2{margin-bottom:0}.control-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.control-row:last-child{margin-bottom:0}.control-label{font-size:13px;color:var(--text-muted);white-space:nowrap}#game-controls .control-buttons{display:flex;flex-direction:column;gap:8px}button{padding:8px 14px;border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);background:var(--surface2);color:var(--text);cursor:pointer;font-size:13px;transition:all .2s}button:hover{background:var(--accent);border-color:var(--accent)}button:disabled{opacity:.4;cursor:not-allowed;background:var(--surface2);border-color:#ffffff14}#board-container{flex:1;position:relative;overflow:hidden}#board-canvas{width:100%;height:100%;display:block}#game-status{position:absolute;top:12px;left:50%;transform:translate(-50%);background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:8px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;pointer-events:none;opacity:0;transition:opacity .3s}#game-status.visible{opacity:1}#move-history-section{display:flex;flex-direction:column;flex:1;min-height:0}#move-history{flex:1;overflow-y:auto;font-family:Courier New,monospace;font-size:13px;line-height:1.8}.move-row{display:flex;gap:8px;padding:2px 6px;border-radius:4px}.move-row:hover{background:#ffffff0d}.move-number{color:var(--text-muted);min-width:28px}.move-cell{cursor:pointer;padding:0 4px;border-radius:3px}.move-cell:hover{background:var(--accent)}.move-cell.black{color:var(--text-muted)}.toggle-switch{position:relative;display:inline-block;width:40px;height:22px;flex-shrink:0}.toggle-switch input{opacity:0;width:0;height:0;position:absolute}.toggle-slider{position:absolute;inset:0;background:#ffffff1a;border-radius:22px;cursor:pointer;transition:background .2s}.toggle-slider:before{content:"";position:absolute;width:16px;height:16px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:transform .2s}.toggle-switch input:checked+.toggle-slider{background:var(--accent)}.toggle-switch input:checked+.toggle-slider:before{transform:translate(18px)}.toggle-sm{width:34px;height:18px}.toggle-sm .toggle-slider:before{width:12px;height:12px}.toggle-sm input:checked+.toggle-slider:before{transform:translate(16px)}.seg-control{display:inline-flex;background:#ffffff0f;border-radius:8px;padding:2px;gap:2px}.seg-control input[type=radio]{display:none}.seg-control label{padding:5px 12px;font-size:12px;border-radius:6px;cursor:pointer;color:var(--text-muted);transition:all .2s;text-align:center;white-space:nowrap;-webkit-user-select:none;user-select:none}.seg-control label:hover{color:var(--text);background:#ffffff0a}.seg-control input[type=radio]:checked+label{background:var(--accent);color:#fff;font-weight:600}.seg-control--wide{width:100%}.seg-control--wide label{flex:1}#ai-thinking{position:absolute;bottom:16px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:8px;padding:8px 18px;font-size:13px;color:var(--text-muted);background:#000000b3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:var(--radius);z-index:10;pointer-events:none}.spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,.15);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.modal{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:var(--surface);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:24px;min-width:320px;max-width:420px}.modal-content h2{margin-bottom:16px;font-size:16px}.hidden{display:none!important}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#ffffff40}@media(max-width:900px){#app-main{flex-direction:column}#panel-left,#panel-right{width:100%;min-width:unset;max-height:30vh;flex-direction:row;flex-wrap:wrap;border:none;border-bottom:1px solid rgba(255,255,255,.05)}#board-container{min-height:50vh}}