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(width<=1024px){.category-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr))}.modal-row-3{grid-template-columns:1fr 1fr}}@media (width<=768px){.mobile-toggle{display:flex!important}.sidebar{transform:translate(-100%)}.sidebar.open{transform:translate(0)}.main-content{padding:4rem 1rem 1rem;margin-left:0!important}.hero-section{padding:2rem 0 1.5rem}.hero-title{font-size:1.6rem}.category-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.article-grid{grid-template-columns:1fr}.article-wrapper{padding:1.5rem}.article-meta{flex-direction:column;align-items:flex-start;gap:.5rem}.chat-container{height:calc(100vh - 5rem)}.chat-bubble{max-width:85%}.manage-table-container{overflow-x:auto}.manage-table{min-width:700px}.manage-header{flex-direction:column;align-items:flex-start;gap:.75rem}.manage-filters{flex-direction:column}.modal{max-height:95vh}.modal-row-3,.modal-row-2{grid-template-columns:1fr}.admin-actions{flex-direction:column}.login-card{padding:2rem 1.5rem}}@media (width<=480px){.search-bar-hero{border-radius:var(--radius-lg);flex-direction:column}.hero-title,.page-title{font-size:1.4rem}.card-article-row{padding:.75rem 1rem}}.toast-container{z-index:9999;flex-direction:column;gap:.5rem;display:flex;position:fixed;bottom:1.5rem;right:1.5rem}.toast{border-radius:var(--radius-md);background:var(--color-bg-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-lg);align-items:center;gap:.5rem;min-width:280px;max-width:420px;padding:.75rem 1rem;font-size:.85rem;animation:.3s slideInRight;display:flex}.toast-success{color:#22c55e;border-color:#22c55e4d}.toast-error{color:#ef4444;border-color:#ef44444d}.toast-info{color:#3b82f6;border-color:#3b82f64d}.toast-message{color:var(--color-text-primary);flex:1}.toast-close{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;flex-shrink:0;padding:2px}.toast-close:hover{color:var(--color-text-secondary)}@keyframes slideInRight{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.skeleton-list{flex-direction:column;gap:.75rem;display:flex}.skeleton-item{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:1.25rem;overflow:hidden}.skeleton-row{padding:1rem 1.25rem}.skeleton-card{padding:1.5rem}.skeleton-line{background:linear-gradient(90deg, var(--color-bg-elevated) 25%, #94a3b814 50%, var(--color-bg-elevated) 75%);background-size:200% 100%;border-radius:6px;height:12px;margin-bottom:.5rem;animation:1.5s ease-in-out infinite shimmer}.skeleton-line:last-child{margin-bottom:0}.skeleton-line-lg{width:70%;height:14px}.skeleton-line-md{width:45%}.skeleton-line-sm{width:30%;height:10px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.empty-state-container{text-align:center;flex-direction:column;align-items:center;padding:4rem 2rem;display:flex}.empty-state-icon{border-radius:var(--radius-xl);background:var(--color-bg-elevated);width:64px;height:64px;color:var(--color-text-muted);justify-content:center;align-items:center;margin-bottom:1.25rem;display:flex}.empty-state-title{color:var(--color-text-primary);margin-bottom:.5rem;font-size:1rem;font-weight:600}.empty-state-desc{color:var(--color-text-muted);max-width:320px;font-size:.85rem;line-height:1.6}.empty-state-action{margin-top:1.25rem}