.settings-container{position:fixed;top:0;right:0;height:100vh;z-index:24000}.settings-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:rgba(0,0,0,.5);opacity:0;visibility:hidden;transition:all .3s ease;z-index:1999}.settings-overlay.active{opacity:1;visibility:visible}#settingsMenu{position:fixed;top:0;right:-400px;width:400px;height:100vh;background:var(--container-bg);box-shadow:-2px 0 10px rgba(0,0,0,.1);transition:right .3s ease;z-index:2000;overflow-y:scroll}#settingsMenu.active{right:0}.settings-header{display:flex;justify-content:space-between;align-items:center;padding:20px;border-bottom:1px solid var(--border-color);position:sticky;top:0;background:var(--container-bg);z-index:10}.settings-header h2{margin:0;color:var(--text-color);font-size:1.5em}.settings-close{background:0 0;border:none;color:var(--text-color);font-size:1.5em;cursor:pointer;padding:5px;transition:transform .2s ease}.settings-close:hover{transform:scale(1.1)}.tabs{padding:20px}.tab{display:flex;justify-content:space-between;align-items:center;padding:15px;margin-bottom:10px;background:var(--highlight-bg);border-radius:8px;cursor:pointer;transition:background .2s ease}.tab:hover{background:var(--button-hover)}.tab-left{display:flex;align-items:center;gap:12px}.tab i{width:20px;text-align:center;color:var(--text-color)}.chevron{transition:transform .3s ease}.tab.active .chevron{transform:rotate(180deg)}.tab-content{display:none;padding:15px;margin:-5px 0 15px;background:var(--container-bg);border-radius:0 0 8px 8px;border:1px solid var(--border-color)}.tab-content.active{display:block}.tab-content label{display:block;margin:15px 0 5px;color:var(--text-color);font-size:.9em}.tab-content input[type=color],.tab-content input[type=number],.tab-content input[type=range],.tab-content select{width:100%;padding:8px;border:1px solid var(--border-color);border-radius:4px;background:var(--highlight-bg);color:var(--text-color);margin-bottom:10px}.tab-content input[type=checkbox]{margin-right:10px}.settings-group{margin-bottom:25px}.settings-group h4{color:var(--secondary-text);font-size:.8em;text-transform:uppercase;letter-spacing:1px;margin-bottom:15px}.additional-grid,.tools-grid{display:grid;grid-template-columns:1fr;gap:10px}.additional-item,.tool-item{display:flex;justify-content:space-between;align-items:center;padding:12px;background:var(--highlight-bg);border-radius:6px;transition:background .2s ease}.additional-item:hover,.tool-item:hover{background:var(--button-hover)}#settingsMenu::-webkit-scrollbar{width:8px}#settingsMenu::-webkit-scrollbar-track{background:var(--container-bg)}#settingsMenu::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}#settingsMenu input[type=checkbox]{margin-right:5px;position:relative;width:50px;height:26px;appearance:none;background:var(--border-color);border-radius:25px;transition:.4s cubic-bezier(.4, 0, .2, 1);cursor:pointer;border:2px solid transparent;vertical-align:middle}#settingsMenu input[type=checkbox]::before{content:'';position:absolute;width:18px;height:18px;border-radius:50%;top:50%;left:4px;transform:translateY(-50%);background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.2);transition:.4s cubic-bezier(.4, 0, .2, 1)}#settingsMenu input[type=checkbox]:checked{background:var(--primary-color)}#settingsMenu input[type=checkbox]:checked::before{left:calc(100% - 22px);background:#fff}.pro-feature{position:relative}.pro-feature::after{content:'PRO';position:absolute;top:-8px;right:-8px;background:var(--primary-color);color:#fff;padding:2px 6px;border-radius:4px;font-size:10px;font-weight:700}.scramble-type-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:10px 0}.scramble-type-item{display:flex;flex-direction:column;justify-content:center;align-items:center;width:70px;height:70px;white-space:nowrap;gap:5px;padding:10px;border-radius:8px;background:var(--highlight-bg);cursor:pointer;transition:background .2s ease;text-align:center}.scramble-type-item:hover{background:var(--button-hover)}.scramble-type-item.active{background:var(--primary-color);color:#fff}.scramble-type-item i{font-size:24px}.scramble-type-item span{font-size:12px;text-align:center}.scramble-category{margin:20px 0 10px;transition:all .3s ease}.scramble-category.subsets{display:none;opacity:0;transition:opacity .3s ease;margin-top:0}.scramble-category.subsets.active{display:block;opacity:1}.scramble-category.move-subsets{display:none;opacity:0;transition:opacity .3s ease}.scramble-category.move-subsets.active{display:block;opacity:1}.scramble-category.main-puzzles.hidden{display:none}#settingsMenu,#settingsMenu *{box-sizing:border-box}.scramble-category-title{font-size:.9em;color:var(--secondary-text);margin-bottom:10px;text-transform:uppercase;letter-spacing:1px}.back-to-main{display:none;align-items:center;gap:10px;padding:10px;margin-bottom:15px;cursor:pointer;color:var(--text-color)}.back-to-main i{transition:transform .3s ease}.back-to-main:hover i{transform:translateX(-3px)}.background-preview-section{margin-top:20px}.background-previews{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.background-preview,.preview-item{position:relative;width:calc(33.33% - 6px);height:80px;border-radius:6px;overflow:hidden;cursor:pointer;border:2px solid transparent;transition:all .2s ease;flex-shrink:0}.background-preview:hover{transform:translateY(-2px)}.background-preview.active{border-color:var(--primary-color)}.background-preview img{width:100%;height:100%;object-fit:cover}.custom-upload-area{border:2px dashed var(--border-color);border-radius:8px;padding:20px;text-align:center;cursor:pointer;transition:all .2s ease;margin-top:10px}.custom-upload-area.drag-over{background:var(--highlight-bg);border-color:var(--primary-color)}.custom-upload-area i{font-size:24px;color:var(--secondary-text);margin-bottom:10px}.none-preview{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--highlight-bg);color:var(--secondary-text);font-size:1.5em}.none-preview i{opacity:.8;transition:opacity .2s ease;font-size:1.8em}.none-preview:hover i{opacity:1}.uploaded-previews{display:flex;flex-wrap:wrap;gap:8px;width:100%}.preview-item img{width:100%;height:100%;object-fit:cover}.remove-preview{position:absolute;top:5px;right:5px;background:rgba(0,0,0,.5);color:#fff;border:none;border-radius:50%;width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;transition:opacity .2s}.preview-item:hover .remove-preview{opacity:1}.preview-item.active{border-color:var(--primary-color)}@media (max-width:768px){#settingsMenu{width:100%;right:-100%}.tab-content{padding:10px}.additional-grid,.tools-grid{grid-template-columns:1fr}}