.grid-selector{display:flex;gap:8px;flex-wrap:wrap}.grid-option{flex:1;min-width:70px;padding:12px 8px;background:#fff;border:2px solid #e5e7eb;border-radius:10px;cursor:pointer;transition:all 0.2s ease;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}.grid-option:hover{border-color:#a5b4fc;background:#f5f3ff}.grid-option.active{border-color:#6366f1;background:#eef2ff}.grid-option span{font-size:12px;font-weight:600;color:#6b7280}.grid-option.active span{color:#4f46e5}.grid-icon{width:36px;height:36px;display:grid;gap:2px}.grid-icon div{background:#d1d5db;border-radius:2px}.grid-option.active .grid-icon div{background:#818cf8}.custom-grid-inputs{display:flex;align-items:center;gap:8px}.custom-grid-inputs input{width:60px;padding:8px;border:2px solid #e5e7eb;border-radius:8px;font-size:14px;text-align:center;font-weight:600}.custom-grid-inputs input:focus{border-color:#6366f1;outline:none}.custom-grid-inputs span{font-weight:600;color:#6b7280}.splitter-canvas-container{position:relative;border-radius:12px;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:300px;border:2px dashed #d1d5db;background:#f9fafb}.splitter-canvas-container canvas{max-width:100%;max-height:500px}.splitter-canvas-container .placeholder{color:#9ca3af;text-align:center;padding:40px}.grid-overlay{position:absolute;top:0;left:0;pointer-events:none}.tiles-preview{display:grid;gap:4px;padding:12px;background:#f9fafb;border-radius:10px;max-height:400px;overflow-y:auto}.tile-item{position:relative;border-radius:6px;overflow:hidden;border:2px solid #e5e7eb;cursor:pointer;transition:all 0.2s ease}.tile-item:hover{border-color:#6366f1;transform:scale(1.02)}.tile-item canvas{width:100%;height:auto;display:block}.tile-item .tile-label{position:absolute;bottom:0;left:0;right:0;background:rgb(0 0 0 / .6);color:#fff;text-align:center;font-size:11px;font-weight:600;padding:2px}.tile-item .tile-download{position:absolute;top:4px;right:4px;width:24px;height:24px;background:rgb(99 102 241 / .9);color:#fff;border:none;border-radius:50%;font-size:10px;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 0.2s ease}.tile-item:hover .tile-download{opacity:1}.format-select{padding:8px 12px;border:2px solid #e5e7eb;border-radius:8px;font-size:13px;background:#fff;cursor:pointer;font-weight:600}.format-select:focus{border-color:#6366f1;outline:none}@media (max-width:640px){.grid-option{min-width:55px;padding:8px 4px}.grid-icon{width:28px;height:28px}.splitter-canvas-container canvas{max-height:300px}.tiles-preview{gap:2px;padding:8px}.tile-item{border-width:1px}.tile-item .tile-label{display:none}.tile-item .tile-download{opacity:1;width:28px;height:28px;font-size:12px}}#download-all-btn.generating{pointer-events:none;opacity:.7}#download-all-btn.generating::after{content:'';display:inline-block;width:16px;height:16px;margin-left:8px;border:2px solid rgb(255 255 255 / .3);border-top-color:#fff;border-radius:50%;animation:spin 0.6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}