.square{position:relative;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:filter var(--transition-fast);-webkit-user-select:none;user-select:none}.square:hover{filter:brightness(1.05)}.valid-move-dot{width:20%;height:20%;background:#36364dba;clip-path:polygon(30% 0%,70% 0%,100% 30%,100% 70%,70% 100%,30% 100%,0% 70%,0% 30%);pointer-events:none;z-index:100}.capture-ring{position:absolute;top:0;right:0;bottom:0;left:0;border:4px solid rgba(54,54,77,.73);border-radius:0;pointer-events:none;z-index:101;box-sizing:border-box}.label{position:absolute;font-size:11px;font-weight:600;pointer-events:none;opacity:.9}.rank-label{top:2px;left:3px}.file-label{bottom:1px;right:3px}.board-editor-container{display:flex;gap:2rem;justify-content:center;align-items:flex-start;width:100%}.board-editor-left{flex:0 0 auto}.board-editor-grid{box-shadow:var(--shadow-board);border:2px solid var(--color-border);background-color:var(--color-surface);padding:4px;box-sizing:content-box}.board-editor-square{box-sizing:border-box;transition:box-shadow .15s ease,transform .1s ease}.board-editor-square:hover{box-shadow:inset 0 0 0 2px #fff3}.board-editor-square:active{transform:scale(.98)}.board-editor-piece-wrapper{transition:transform .15s cubic-bezier(.25,1,.5,1)}.board-editor-piece-wrapper:active{cursor:grabbing;transform:scale(1.1)}.editor-control-panel{background:radial-gradient(circle at top right,rgba(233,69,96,.05),transparent 40%),radial-gradient(circle at bottom left,rgba(91,140,255,.04),transparent 40%),linear-gradient(180deg,#ffffff0a,#ffffff03),var(--color-surface);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--color-border);border-radius:20px;padding:1.25rem;display:flex;flex-direction:column;gap:1rem;box-shadow:var(--shadow-board);color:var(--color-text-primary)}.editor-panel-title{margin:0;font-size:1.35rem;font-weight:800;letter-spacing:-.02em;color:var(--color-text-primary);border-bottom:1px solid var(--color-border);padding-bottom:.5rem}.editor-section-subtitle{margin:0 0 .5rem;font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-secondary)}.editor-action-buttons{display:grid;grid-template-columns:1fr 1fr 1fr;gap:.5rem}.editor-btn{display:inline-flex;align-items:center;justify-content:center;gap:.35rem;padding:.45rem .5rem;font-size:.78rem;font-weight:600;border-radius:10px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);border:1px solid transparent;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.editor-btn--secondary{background:#ffffff0d;border-color:var(--color-border);color:var(--color-text-primary)}.editor-btn--secondary:hover{background:#ffffff1a;border-color:var(--color-border-hover);transform:translateY(-1px)}.editor-btn--danger{background:#ef44441a;border-color:#ef444433;color:#ef4444}.editor-btn--danger:hover{background:#ef444433;border-color:#ef444466;transform:translateY(-1px)}.editor-btn--primary{background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;box-shadow:0 4px 12px #3b82f640}.editor-btn--primary:hover:not(:disabled){background:linear-gradient(135deg,#2563eb,#1e40af);transform:translateY(-1px);box-shadow:0 6px 16px #3b82f666}.editor-btn:active{transform:translateY(1px) scale(.98)}.editor-palette-section{background:#ffffff05;border:1px solid var(--color-border);border-radius:16px;padding:.85rem;display:flex;flex-direction:column;gap:.75rem}.editor-palette-row{display:flex;align-items:center;gap:.5rem}.palette-row-label{font-size:.8rem;font-weight:600;color:var(--color-text-tertiary);min-width:48px}.palette-pieces-container{display:flex;gap:.4rem;flex-wrap:nowrap}.palette-piece-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#ffffff08;border:1px solid var(--color-border);border-radius:10px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);padding:0}.palette-piece-btn img{width:82%;height:82%;pointer-events:none;transition:transform .15s ease}.palette-piece-btn:hover{background:#ffffff14;border-color:var(--color-border-hover);transform:translateY(-2px)}.palette-piece-btn:hover img{transform:scale(1.08)}.palette-piece-btn.active{border-color:var(--color-accent);background:#e9456026;box-shadow:0 0 10px #e9456059;transform:scale(1.08) translateY(-2px)}.palette-tool-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem .85rem;font-size:.8rem;font-weight:600;color:var(--color-text-secondary);background:#ffffff08;border:1px solid var(--color-border);border-radius:10px;cursor:pointer;transition:all .2s ease}.palette-tool-btn:hover{background:#ffffff14;color:var(--color-text-primary);transform:translateY(-1px)}.palette-tool-btn.active{background:#e9456026;border-color:var(--color-accent);color:var(--color-accent);box-shadow:0 0 8px #e945604d}.turn-radio-group{display:flex;gap:.75rem}.turn-radio-label{flex:1;display:flex;align-items:center;justify-content:center;gap:.5rem;padding:.5rem .75rem;border-radius:12px;border:1px solid var(--color-border);background:#ffffff05;cursor:pointer;font-size:.85rem;font-weight:600;color:var(--color-text-secondary);transition:all .2s cubic-bezier(.4,0,.2,1)}.turn-radio-label:hover{background:#ffffff0f;border-color:var(--color-border-hover)}.turn-radio-label.selected{border-color:var(--color-accent);background:#e9456014;color:var(--color-text-primary);box-shadow:0 4px 12px #e945601a}.turn-indicator{width:14px;height:14px;border-radius:50%;border:1.5px solid var(--color-border-hover)}.turn-indicator--white{background-color:#fff;box-shadow:0 0 4px #fffc}.turn-indicator--black{background-color:#1a1a1a;box-shadow:0 0 4px #000c}.editor-validation-warning{background:#ef444414;border:1.5px dashed rgba(239,68,68,.3);color:#f87171;border-radius:12px;padding:.75rem 1rem;display:flex;align-items:flex-start;gap:.65rem;font-size:.84rem;line-height:1.4;font-weight:500}.warning-icon{flex-shrink:0;margin-top:2px;color:#ef4444}@keyframes shake{0%,to{transform:translate(0)}15%,45%,75%{transform:translate(-4px)}30%,60%,90%{transform:translate(4px)}}.animate-shake{animation:shake .5s ease-in-out}.editor-analyze-btn{width:100%;padding:.65rem 1.25rem;font-size:.95rem;text-transform:uppercase;letter-spacing:.03em}.editor-analyze-btn:disabled{background:#27272a;border-color:#3f3f46;color:#71717a;cursor:not-allowed;box-shadow:none;transform:none!important}.turn-download-row{display:flex;gap:1rem;align-items:flex-end;width:100%}.turn-select-wrapper,.download-btn-wrapper{flex:1;display:flex;flex-direction:column}.turn-dropdown-select{width:100%;padding:.52rem 2.2rem .52rem .75rem;font-size:.85rem;font-weight:600;color:var(--color-text-primary);background-color:#ffffff08;border:1px solid var(--color-border);border-radius:10px;cursor:pointer;outline:none;transition:all .2s ease;-moz-appearance:none;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");background-repeat:no-repeat;background-position:right .75rem center;background-size:1rem}.turn-dropdown-select:hover{background-color:#ffffff14;border-color:var(--color-border-hover)}.turn-dropdown-select:focus{border-color:var(--color-accent);box-shadow:0 0 0 2px #e9456026}.turn-dropdown-select option{background-color:#151521;color:var(--color-text-primary);padding:8px}.download-pos-btn{width:100%;height:38px;box-sizing:border-box}@media(max-width:900px){.board-editor-container{flex-direction:column;align-items:center;gap:1.5rem}.board-editor-right{width:100%!important;max-width:500px}}