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var(--border-input);border-radius:var(--radius-xl);padding:var(--space-12) var(--space-8);justify-content:center;align-items:center;gap:var(--space-3);cursor:pointer;transition:all var(--transition-fast);text-align:center;background:var(--bg-secondary);flex-direction:column;display:flex}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--color-primary-400);background:var(--bg-hover)}.upload-zone.drag-over{box-shadow:var(--shadow-glow);border-style:solid}.upload-zone .upload-icon{width:56px;height:56px;color:var(--color-primary-400);transition:transform var(--transition-spring)}.upload-zone:hover .upload-icon,.upload-zone.drag-over .upload-icon{transform:translateY(-4px)scale(1.05)}.upload-zone .upload-title{font-size:var(--font-size-md);font-weight:var(--font-weight-semibold);color:var(--text-primary)}.upload-zone .upload-subtitle{font-size:var(--font-size-sm);color:var(--text-tertiary)}.upload-zone .upload-browse{color:var(--color-primary-500);font-weight:var(--font-weight-medium);text-underline-offset:2px;text-decoration:underline}.progress-bar{background:var(--bg-tertiary);border-radius:var(--radius-full);height:6px;overflow:hidden}.progress-bar-fill{background:linear-gradient(90deg, var(--color-primary-500), var(--color-primary-400));border-radius:var(--radius-full);height:100%;transition:width var(--transition-slow)}.toast-custom{font-family:var(--font-family)!important;font-size:var(--font-size-base)!important;border-radius:var(--radius-lg)!important;box-shadow:var(--shadow-lg)!important}.empty-state{padding:var(--space-16) var(--space-8);text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.empty-state .empty-icon{width:80px;height:80px;color:var(--text-tertiary);margin-bottom:var(--space-4);opacity:.5}.empty-state .empty-title{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);color:var(--text-primary);margin-bottom:var(--space-2)}.empty-state .empty-description{font-size:var(--font-size-base);color:var(--text-tertiary);max-width:360px;margin-bottom:var(--space-6)}.stats-grid{gap:var(--space-4);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));display:grid}.stat-card{padding:var(--space-3) var(--space-4);align-items:center;gap:var(--space-3);display:flex}.stat-card .stat-icon{border-radius:var(--radius-md);justify-content:center;align-items:center;width:36px;height:36px;margin-bottom:0;display:flex}.stat-card .stat-value{font-size:var(--font-size-lg);font-weight:var(--font-weight-bold);letter-spacing:var(--letter-spacing-tight);color:var(--text-primary)}.stat-card .stat-label{font-size:var(--font-size-xs);color:var(--text-tertiary);margin-top:0}.page-header{margin-bottom:var(--space-6);justify-content:space-between;align-items:center;gap:var(--space-4);flex-wrap:wrap;display:flex}.page-title{font-size:var(--font-size-2xl);font-weight:var(--font-weight-bold);letter-spacing:var(--letter-spacing-tight);color:var(--text-primary)}.page-description{font-size:var(--font-size-base);color:var(--text-tertiary);margin-top:var(--space-1)}.page-actions{align-items:center;gap:var(--space-2);display:flex}.view-toggle{border:1px solid var(--border-primary);border-radius:var(--radius-md);align-items:center;display:flex;overflow:hidden}.view-toggle-btn{width:36px;height:36px;color:var(--text-tertiary);transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.view-toggle-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.view-toggle-btn.active{background:var(--bg-active);color:var(--color-primary-600)}[data-theme=dark] .view-toggle-btn.active{color:var(--color-primary-400)}.dropdown{display:inline-flex;position:relative}.dropdown-menu{top:calc(100% + var(--space-1));background:var(--bg-elevated);border:1px solid var(--border-primary);border-radius:var(--radius-lg);min-width:200px;box-shadow:var(--shadow-lg);z-index:var(--z-dropdown);animation:fadeInDown var(--transition-fast) ease-out;padding:var(--space-1);position:absolute;right:0}.dropdown-item{align-items:center;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);color:var(--text-secondary);font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-fast);text-align:left;width:100%;display:flex}.dropdown-item:hover{background:var(--bg-hover);color:var(--text-primary)}.dropdown-item.danger{color:var(--color-danger-500)}.dropdown-item.danger:hover{background:var(--color-danger-50)}[data-theme=dark] .dropdown-item.danger:hover{background:#ef44441a}.dropdown-divider{background:var(--border-secondary);height:1px;margin:var(--space-1) 0}.auth-page{min-height:100vh;padding:var(--space-4);background:url(/login_clouds_bg.png) 50%/cover no-repeat fixed;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.auth-page:before{content:"";-webkit-backdrop-filter:blur(6px);z-index:1;background:linear-gradient(135deg,#2761ab1f,#6366f114);position:absolute;inset:0}.auth-container{width:100%;max-width:420px;animation:fadeInUp var(--transition-slow) ease-out;z-index:2;position:relative}.auth-card{-webkit-backdrop-filter:blur(20px)saturate(180%);border-radius:var(--radius-2xl);padding:var(--space-8);transition:all var(--transition-medium);background:#fff;border:1px solid #ffffff80;box-shadow:0 20px 40px #0000000f,inset 0 1px #fff9}[data-theme=dark] .auth-card{background:#0f1117bf;border:1px solid #ffffff14;box-shadow:0 20px 40px #00000040,inset 0 1px #ffffff0d}.auth-page .input{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);transition:all var(--transition-fast);background:#ffffff73;border:1px solid #00000014}[data-theme=dark] .auth-page .input{color:var(--text-primary);background:#0003;border:1px solid #ffffff14}.auth-page .input:focus{background:#ffffffd9;border-color:#2761ab;box-shadow:0 0 0 4px #2761ab26}[data-theme=dark] .auth-page .input:focus{background:#00000059;border-color:#2761ab;box-shadow:0 0 0 4px #2761ab4d}.auth-page .btn-primary{transition:all var(--transition-fast);background:#2761ab;border-color:#2761ab;box-shadow:0 4px 12px #2761ab40}.auth-page .btn-primary:hover{background:#1e4d8c;border-color:#1e4d8c;transform:translateY(-1px);box-shadow:0 6px 16px #2761ab59}.auth-logo{justify-content:center;align-items:center;gap:var(--space-3);margin-bottom:var(--space-6);display:flex}.auth-logo svg{width:44px;height:44px}.auth-logo-text{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);letter-spacing:var(--letter-spacing-tight);color:#2761ab}.auth-title{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);text-align:center;margin-bottom:var(--space-1);color:var(--text-primary)}.auth-subtitle{font-size:var(--font-size-base);color:var(--text-tertiary);text-align:center;margin-bottom:var(--space-6)}.auth-form{gap:var(--space-4);flex-direction:column;display:flex}.auth-divider{align-items:center;gap:var(--space-3);margin:var(--space-2) 0;color:var(--text-tertiary);font-size:var(--font-size-sm);display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--border-primary);flex:1;height:1px}.auth-footer{text-align:center;font-size:var(--font-size-sm);color:var(--text-tertiary);margin-top:var(--space-6)}.auth-footer a{color:var(--color-primary-500);font-weight:var(--font-weight-medium)}.document-detail{gap:var(--space-6);grid-template-columns:1fr 360px;align-items:start;display:grid}.document-preview-container{background:var(--bg-tertiary);border-radius:var(--radius-lg);justify-content:center;align-items:center;min-height:500px;display:flex;overflow:hidden}.document-preview-container img{object-fit:contain;max-width:100%;max-height:80vh}.document-sidebar{gap:var(--space-4);flex-direction:column;display:flex}.document-meta-section{padding:var(--space-4) var(--space-5)}.document-meta-section h3{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--text-tertiary);text-transform:uppercase;letter-spacing:var(--letter-spacing-wide);margin-bottom:var(--space-3)}.meta-row{padding:var(--space-2) 0;font-size:var(--font-size-sm);border-bottom:1px solid var(--border-secondary);justify-content:space-between;align-items:flex-start;display:flex}.meta-row:last-child{border-bottom:none}.meta-row .meta-label{color:var(--text-tertiary);flex-shrink:0}.meta-row .meta-value{color:var(--text-primary);font-weight:var(--font-weight-medium);text-align:right}.notification-count{background:var(--color-danger-500);color:#fff;min-width:18px;height:18px;font-size:10px;font-weight:var(--font-weight-bold);border-radius:var(--radius-full);border:2px solid var(--bg-primary);justify-content:center;align-items:center;padding:0 5px;display:flex;position:absolute;top:-4px;right:-4px}.notif-panel{background:var(--bg-elevated);border:1px solid var(--border-primary);border-radius:var(--radius-lg);width:380px;max-height:480px;box-shadow:var(--shadow-xl);z-index:200;flex-direction:column;display:flex;position:absolute;top:calc(100% + 8px);right:0;overflow:hidden}.notif-panel-header{border-bottom:1px solid var(--border-primary);justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.notif-panel-title{font-size:var(--font-size-md);font-weight:var(--font-weight-semibold);color:var(--text-primary);align-items:center;gap:8px;margin:0;display:flex}.notif-panel-badge{border-radius:var(--radius-full);background:var(--color-primary-500);color:#fff;min-width:20px;height:20px;font-size:11px;font-weight:var(--font-weight-bold);justify-content:center;align-items:center;padding:0 6px;display:inline-flex}.notif-mark-all-btn{font-size:var(--font-size-xs);color:var(--color-primary-500);cursor:pointer;border-radius:var(--radius-md);font-weight:var(--font-weight-medium);transition:all var(--transition-fast);background:0 0;border:none;align-items:center;gap:4px;padding:4px 8px;display:flex}.notif-mark-all-btn:hover{background:var(--bg-hover);color:var(--color-primary-600)}.notif-panel-body{flex:1;padding:4px;overflow-y:auto}.notif-item{border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast);align-items:flex-start;gap:10px;padding:10px 12px;display:flex;position:relative}.notif-item:hover{background:var(--bg-hover)}.notif-item-unread{background:var(--color-primary-50)}[data-theme=dark] .notif-item-unread{background:#6366f114}.notif-item-unread:hover{background:var(--color-primary-100)}[data-theme=dark] .notif-item-unread:hover{background:#6366f124}.notif-item-icon{border-radius:var(--radius-full);background:var(--bg-tertiary);flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;margin-top:2px;display:flex}.notif-item-content{flex:1;min-width:0}.notif-item-title{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--text-primary);margin:0 0 2px;line-height:1.4}.notif-item-unread .notif-item-title{font-weight:var(--font-weight-semibold)}.notif-item-message{font-size:var(--font-size-xs);color:var(--text-secondary);-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 4px;line-height:1.4;display:-webkit-box;overflow:hidden}.notif-item-time{color:var(--text-tertiary);font-size:11px}.notif-item-read-btn{border-radius:var(--radius-full);border:1px solid var(--border-primary);width:28px;height:28px;color:var(--text-tertiary);cursor:pointer;transition:all var(--transition-fast);opacity:0;background:0 0;flex-shrink:0;justify-content:center;align-items:center;margin-top:2px;display:flex}.notif-item:hover .notif-item-read-btn{opacity:1}.notif-item-read-btn:hover{background:var(--color-success-50);border-color:var(--color-success-500);color:var(--color-success-500)}.notif-empty{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:40px 20px;display:flex}.notif-empty-title{font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--text-secondary);margin:0 0 4px}.notif-empty-subtitle{font-size:var(--font-size-xs);color:var(--text-tertiary);max-width:220px;margin:0;line-height:1.5}@media (width<=480px){.notif-panel{width:calc(100vw - 24px);right:-60px}}@media (width<=1024px){.document-detail{grid-template-columns:1fr}.document-sidebar{order:-1}}@media (width<=768px){:root{--sidebar-width:280px}.app-sidebar{transform:translate(-100%)}.app-sidebar.open{box-shadow:var(--shadow-xl);transform:translate(0)}.app-main{margin-left:0}.app-content{padding:var(--space-4)}.page-header{flex-direction:column;align-items:flex-start}.document-grid{gap:var(--space-3);grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.stats-grid{grid-template-columns:repeat(2,1fr)}.header-search{display:none}.auth-card{padding:var(--space-6)}.modal{border-radius:var(--radius-lg);max-width:100%}}@media (width<=480px){.stats-grid{grid-template-columns:1fr}.document-grid{gap:var(--space-2);grid-template-columns:repeat(2,1fr)}.folder-grid{grid-template-columns:1fr}}@media print{.app-sidebar,.app-header,.no-print{display:none!important}.app-main{margin-left:0!important}}@media (width>=992px){.sidebar-collapsed .app-sidebar{width:70px}.sidebar-collapsed .app-main{margin-left:70px}.sidebar-collapsed .logo-text-group,.sidebar-collapsed .sidebar-logo-text,.sidebar-collapsed .sidebar-link span,.sidebar-collapsed .sidebar-section-title,.sidebar-collapsed .folder-tree,.sidebar-collapsed .sidebar-footer{display:none!important}.sidebar-collapsed .sidebar-link{padding:var(--space-2) 0;justify-content:center}.sidebar-collapsed .sidebar-logo{padding:var(--space-5) 0;justify-content:center}}