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0}.controls-divider{width:1px;height:24px;background-color:var(--text-secondary);opacity:.2;margin:0 .25rem}.controls-section{display:flex;align-items:center;gap:.5rem}@media (max-width:1200px){.right-sidebar{display:none}.main-grid{grid-template-columns:280px 1fr;padding:0 1.5rem}}@media (max-width:768px){.main-grid{grid-template-columns:1fr;padding:0;gap:0}.main-header{display:none}.mobile-header{display:flex;padding:.75rem 1rem;margin:0;border-radius:0!important}#main-content,footer{padding:1rem;margin:0;width:100%}footer{padding-top:2rem;padding-bottom:2rem}#sidebar{position:fixed;top:50%;transform:translateY(-50%);left:-100%;width:70vw;max-width:320px;height:calc(100svh - 2rem);z-index:100;transition:left var(--transition-duration) var(--ease-out-quint);border-radius:var(--radius-xl);overflow-y:auto;display:flex;flex-direction:column;padding:1.25rem;-ms-overflow-style:none;scrollbar-width:none}#sidebar.open{left:1rem}.sidebar-title{font-size:1.125rem}.nav-item{font-size:.9375rem;padding:.625rem}.nav-item svg{width:1.25rem;height:1.25rem}}#main-content{min-height:calc(100vh - 250px)}.glass-effect{background:var(--glass-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--glass-border);box-shadow:0 4px 20px 0 var(--shadow-color);transition:background var(--transition-duration) var(--ease-in-out-quad),border-color var(--transition-duration) var(--ease-in-out-quad);border-radius:var(--radius-xl)}#overlay,.modal-backdrop{position:fixed;inset:0;background-color:var(--backdrop-bg);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);z-index:50;opacity:0;visibility:hidden;transition:opacity var(--transition-duration) var(--ease-in-out-quad),visibility 0s var(--transition-duration),-webkit-backdrop-filter var(--transition-duration) var(--ease-in-out-quad);transition:opacity var(--transition-duration) var(--ease-in-out-quad),visibility 0s var(--transition-duration),backdrop-filter var(--transition-duration) var(--ease-in-out-quad);transition:opacity var(--transition-duration) var(--ease-in-out-quad),visibility 0s var(--transition-duration),backdrop-filter var(--transition-duration) var(--ease-in-out-quad),-webkit-backdrop-filter var(--transition-duration) var(--ease-in-out-quad)}.mobile-search-bar .relative,.search-section .relative{position:relative}#mobile-search-input,#search-input{padding-right:2.5rem}#mobile-search-input::-webkit-search-cancel-button,#search-input::-webkit-search-cancel-button{appearance:none;-webkit-appearance:none}#kanji-detail-modal,.modal-hidden{display:none;pointer-events:none}#kanji-detail-modal{opacity:0;transition:opacity .4s ease-out}.tab-content{display:none}.tab-content.active{display:block}.nav-item-wrapper{position:relative}.nav-item{background:var(--glass-bg);border:1px solid var(--glass-border);box-shadow:0 2px 8px -2px var(--shadow-color);transition:background-color var(--transition-duration) var(--ease-out-quint),color var(--transition-duration) var(--ease-out-quint),transform var(--transition-duration) var(--ease-out-quint),box-shadow var(--transition-duration) var(--ease-out-quint);will-change:transform,background-color,box-shadow;border-radius:var(--radius-md)}.dark-mode .nav-item{color:var(--text-primary)}.nav-item.active{background-color:var(--accent-blue);color:#fff;box-shadow:0 6px 16px rgba(59,130,246,.35);transform:translateY(-2px) scale(1.03);border-color:transparent}.nav-item.active svg{color:#fff!important}#close-sidebar-btn{color:var(--text-secondary);transition:color .2s ease,background-color .2s ease,transform .2s ease;border-radius:var(--radius-full)}.dark-mode .notes-header-btn{background-color:#374151}.dark-mode .notes-header-btn svg,.notes-header-btn svg{fill:var(--pin-unpinned)}.lang-switch{position:relative;background-color:var(--switch-bg);border:none;padding:2px;display:inline-flex;align-items:center}.lang-switch,.lang-switch-pill{border-radius:var(--radius-full)}.lang-switch-pill{position:absolute;z-index:1;top:2px;bottom:2px;background-color:var(--accent-blue);box-shadow:0 4px 12px -2px rgba(59,130,246,.5);transition:transform .4s var(--ease-out-quint),width .4s var(--ease-out-quint)}.lang-switch button{position:relative;z-index:2;padding:.5rem 1rem;border-radius:var(--radius-full);font-weight:600;font-size:.875rem;border:none;cursor:pointer;transition:color .4s var(--ease-in-out-quad);background-color:transparent;color:var(--text-secondary)}.dark-mode .lang-switch button{color:var(--lang-inactive-color,#e5e7eb)}.lang-switch button.active{color:#fff;font-weight:700;background-color:transparent;box-shadow:none}.dark-mode .lang-switch button.active{color:#fff}#progress-overview{height:100%;overflow-y:auto;scrollbar-gutter:stable;scrollbar-width:none;-ms-overflow-style:none}#progress-overview::-webkit-scrollbar{display:none}#sidebar-controls{display:flex;flex-direction:column;gap:1.25rem;padding-top:1.25rem;border-top:1px solid var(--glass-border)}.square-icon-container{aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;width:100%}.square-icon-container>img,.square-icon-container>svg{width:100%;height:100%;-o-object-fit:contain;object-fit:contain}@media (max-width:768px){.mobile-header h1,.modal-title{font-size:clamp(1.1rem,4vw,1.25rem)}}@media (max-width:480px){html{font-size:15px}}#external-search .placeholder-container{min-height:300px;display:flex;align-items:center;justify-content:center}.hover\:text-accent-blue:hover{color:var(--accent-blue)}@media (min-width:640px){.sm\:h-24{height:6rem}.sm\:h-40{height:10rem}.sm\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:gap-4{gap:1rem}.sm\:p-5{padding:1.25rem}.sm\:px-0{padding-left:0;padding-right:0}.sm\:pt-0{padding-top:0}.sm\:text-2xl{font-size:1.5rem;line-height:2rem}.sm\:text-6xl{font-size:3.75rem;line-height:1}.sm\:text-lg{font-size:1.125rem;line-height:1.75rem}.sm\:text-sm{font-size:.875rem;line-height:1.25rem}.sm\:text-xl{font-size:1.25rem;line-height:1.75rem}}@media (min-width:768px){.md\:mb-10{margin-bottom:2.5rem}.md\:flex{display:flex}.md\:hidden{display:none}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:rounded-2xl{border-radius:1rem}.md\:p-6{padding:1.5rem}}@media (min-width:1024px){.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.lg\:p-8{padding:2rem}}