.error-boundary{display:flex;align-items:center;justify-content:center;min-height:60vh;padding:var(--space-4)}.error-boundary-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-8);max-width:480px;width:100%;text-align:center;box-shadow:var(--shadow-lg)}.error-boundary-icon{width:64px;height:64px;border-radius:50%;background:var(--color-danger-bg, rgba(239, 68, 68, .1));color:var(--color-danger);display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-4)}.error-boundary-title{font-size:1.25rem;font-weight:600;margin-bottom:var(--space-2);color:var(--color-text)}.error-boundary-text{color:var(--color-text-secondary);margin-bottom:var(--space-4);line-height:1.5}.error-boundary-details{text-align:left;margin-bottom:var(--space-4);padding:var(--space-3);background:var(--color-bg);border-radius:var(--radius-md);font-size:.8rem}.error-boundary-details summary{cursor:pointer;color:var(--color-text-secondary);font-size:.85rem;margin-bottom:var(--space-2)}.error-boundary-details pre{overflow-x:auto;color:var(--color-danger);white-space:pre-wrap;word-break:break-word}.error-boundary-actions{display:flex;gap:var(--space-3);justify-content:center}.toast-container{position:fixed;bottom:var(--space-4);right:var(--space-4);z-index:9999;display:flex;flex-direction:column;gap:var(--space-2);max-width:380px;width:100%;pointer-events:none}.toast{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:var(--font-size-sm);font-weight:500;pointer-events:auto;animation:toastSlideIn .25s ease}.toast-success{background:#f0fdf4;border:1px solid #bbf7d0;color:var(--color-success)}.toast-error{background:#fef2f2;border:1px solid #fecaca;color:var(--color-danger)}.toast-info{background:var(--color-primary-light);border:1px solid color-mix(in srgb,var(--color-primary) 25%,transparent);color:var(--color-primary)}.toast-icon{flex-shrink:0;display:flex}.toast-message{flex:1;line-height:1.4;color:var(--color-text)}.toast-close{flex-shrink:0;display:flex;align-items:center;justify-content:center;padding:2px;background:none;border:none;color:var(--color-text-secondary);cursor:pointer;opacity:.6;transition:opacity .15s}.toast-close:hover{opacity:1}@keyframes toastSlideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@media (max-width: 480px){.toast-container{left:var(--space-2);right:var(--space-2);bottom:var(--space-2);max-width:none}}.navbar{background:#ffffffd9;border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100;box-shadow:0 1px 3px #0000000a;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.navbar-inner{display:flex;align-items:center;justify-content:space-between;height:56px;gap:var(--space-4)}.navbar-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--color-text);flex-shrink:0}.navbar-logo-icon{color:var(--color-primary)}.navbar-title{font-size:var(--font-size-lg);font-weight:700;letter-spacing:-.02em}.navbar-links{display:flex;gap:var(--space-1)}.navbar-link{display:flex;align-items:center;gap:6px;padding:8px 14px;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary);text-decoration:none;transition:all .2s ease}.navbar-link:hover{color:var(--color-text);background:var(--color-bg)}.navbar-link.active{color:var(--color-primary);background:var(--color-primary-light);font-weight:600}.navbar-right{display:flex;align-items:center;gap:var(--space-3);flex-shrink:0}.navbar-user{display:flex;align-items:center;gap:var(--space-2)}.navbar-email{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.navbar-role-badge{display:inline-flex;align-items:center;padding:2px 8px;font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;border-radius:999px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent, #8b5cf6));color:#fff}.navbar-logout{display:inline-flex;align-items:center;gap:6px}.navbar-theme-toggle{padding:6px 10px;font-size:16px;line-height:1}.navbar-hamburger{display:none;flex-direction:column;gap:4px;padding:8px;background:none;border:none;cursor:pointer}.hamburger-line{display:block;width:20px;height:2px;background:var(--color-text);border-radius:2px;transition:all .2s ease}.hamburger-line.open:nth-child(1){transform:rotate(45deg) translate(4px,4px)}.hamburger-line.open:nth-child(2){opacity:0}.hamburger-line.open:nth-child(3){transform:rotate(-45deg) translate(4px,-4px)}.navbar-mobile-bottom{display:none}@media (max-width: 640px){.navbar-hamburger{display:flex}.navbar-right{display:none}.navbar-links{display:none;position:absolute;top:56px;left:0;right:0;flex-direction:column;background:var(--color-white);border-bottom:1px solid var(--color-border);padding:var(--space-2);box-shadow:var(--shadow-md);gap:0}[data-theme=dark] .navbar-links{background:var(--color-surface)}.navbar-links.open{display:flex}.navbar-link{padding:12px 16px;border-radius:var(--radius-md)}.navbar-link span{display:inline}.navbar-mobile-bottom{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);border-top:1px solid var(--color-border);margin-top:var(--space-2);flex-wrap:wrap}.navbar-mobile-bottom .navbar-user{flex:1;min-width:0}.navbar-mobile-bottom .navbar-email{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.navbar-mobile-bottom .navbar-role-badge{display:inline-flex}}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--space-4);background:linear-gradient(135deg,#eef2ff,#f0f2f5,#f5f3ff)}.auth-card{width:100%;max-width:420px;padding:var(--space-5) var(--space-5) var(--space-4);background:var(--color-white);border-radius:var(--radius-xl);box-shadow:0 10px 40px #00000014,0 2px 8px #0000000a;border:1px solid rgba(0,0,0,.04)}.auth-header{text-align:center;margin-bottom:var(--space-4)}.auth-logo-wrapper{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent, #8b5cf6));margin-bottom:var(--space-3)}.auth-logo-icon{color:#fff}.auth-title{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-text);letter-spacing:-.02em}.auth-subtitle{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--space-1)}.auth-form{display:flex;flex-direction:column;gap:var(--space-3)}.form-input-icon{padding-left:42px}.auth-submit{width:100%;margin-top:var(--space-2);padding:12px;font-size:var(--font-size-base)}.auth-footer{text-align:center;font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-top:var(--space-4);padding-top:var(--space-3);border-top:1px solid var(--color-border)}.auth-footer a{font-weight:500}.skeleton-line{background:linear-gradient(90deg,var(--color-border) 25%,var(--color-surface) 50%,var(--color-border) 75%);background-size:200% 100%;animation:skeleton-shimmer 1.5s ease-in-out infinite;border-radius:4px}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.skeleton-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-4)}.skeleton-card-footer{display:flex;align-items:center;justify-content:space-between;margin-top:var(--space-3)}.skeleton-folder{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-3) var(--space-4);display:flex;align-items:center;gap:var(--space-3)}.skeleton-folder-info{flex:1}.skeleton-stat{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-4);display:flex;align-items:center;gap:var(--space-3)}.skeleton-stat-info{flex:1}.skeleton-progress-list{display:flex;flex-direction:column;gap:var(--space-3)}.skeleton-progress-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4)}.skeleton-progress-header{display:flex;justify-content:space-between;align-items:center}.skeleton-progress-details{display:flex;gap:var(--space-3);margin-top:var(--space-2)}.card-form{display:flex;flex-direction:column;gap:var(--space-3)}.card-form-title{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text)}.char-count{font-size:var(--font-size-xs);color:var(--color-text-secondary);text-align:right;margin-top:-4px}.topic-select-row{display:flex;gap:8px;align-items:center}.topic-select-row .form-input,.topic-select-row select{flex:1;min-width:0}.card-form-toggle{display:flex;flex-direction:column;gap:var(--space-2)}.toggle-buttons{display:flex;gap:0;border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden}.toggle-btn{flex:1;padding:10px 16px;font-family:var(--font-family);font-size:var(--font-size-sm);font-weight:500;border:none;background:var(--color-white);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition)}.toggle-btn:first-child{border-right:1px solid var(--color-border)}.toggle-btn.active{background:var(--color-primary);color:var(--color-white)}.toggle-btn:hover:not(.active):not(:disabled){background:var(--color-bg);color:var(--color-text)}.toggle-btn:disabled{opacity:.5;cursor:not-allowed}.folder-picker-display{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;background:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);font-size:var(--font-size-sm);min-height:42px}.folder-picker-display:hover{border-color:var(--color-primary)}.folder-picker-display.open{border-color:var(--color-primary);border-bottom-left-radius:0;border-bottom-right-radius:0}.folder-picker-path{display:flex;align-items:center;gap:4px;color:var(--color-text);font-weight:500}.folder-picker-placeholder{color:var(--color-text-secondary)}.folder-picker-clear{padding:2px 6px;background:none;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:16px;line-height:1;border-radius:var(--radius-sm)}.folder-picker-clear:hover{background:var(--color-bg);color:var(--color-text)}.folder-picker-sep{color:var(--color-text-secondary);opacity:.5;flex-shrink:0}.folder-picker-panel{display:flex;flex-direction:column;border:1px solid var(--color-primary);border-top:none;border-radius:0 0 var(--radius-md) var(--radius-md);background:var(--color-white);max-height:280px;overflow-y:auto}.folder-picker-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:2px;padding:8px 12px;background:var(--color-bg);border-bottom:1px solid var(--color-border);font-size:var(--font-size-xs)}.folder-picker-crumb{padding:2px 6px;background:none;border:none;font-family:var(--font-family);font-size:var(--font-size-xs);color:var(--color-primary);cursor:pointer;border-radius:var(--radius-sm);display:inline-flex;align-items:center;gap:3px}.folder-picker-crumb:hover{background:var(--color-white)}.folder-picker-item{display:flex;align-items:center;gap:var(--space-2);padding:10px 12px;background:none;border:none;border-bottom:1px solid var(--color-border);font-family:var(--font-family);font-size:var(--font-size-sm);color:var(--color-text);cursor:pointer;transition:background var(--transition);text-align:left;width:100%}.folder-picker-item:last-child{border-bottom:none}.folder-picker-item:hover{background:var(--color-bg)}.folder-picker-item svg:first-child{color:var(--color-primary);flex-shrink:0}.folder-picker-arrow{margin-left:auto;color:var(--color-text-secondary)}.folder-picker-select{background:var(--color-primary-light, #eff6ff);font-weight:500}.folder-picker-select:hover{background:var(--color-primary);color:var(--color-white)}.folder-picker-select:hover svg{color:var(--color-white)}.folder-picker-add{color:var(--color-primary);font-weight:500}.folder-picker-new{display:flex;gap:var(--space-2);align-items:center;padding:8px 12px;border-bottom:1px solid var(--color-border)}.folder-picker-new .form-input{flex:1;min-width:0;padding:6px 10px;font-size:var(--font-size-sm)}.file-upload{display:flex;flex-direction:column;gap:var(--space-3)}.file-upload-title{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text)}.file-upload-desc{font-size:var(--font-size-sm);color:var(--color-text-secondary);line-height:1.6}.file-upload-dropzone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--space-5);text-align:center;transition:all var(--transition);background:var(--color-bg)}.file-upload-dropzone.drag-over{border-color:var(--color-primary);background:var(--color-primary-light)}.file-upload-dropzone.has-file{border-style:solid;border-color:var(--color-primary);background:var(--color-primary-light)}.file-upload-input{display:none}.file-upload-label{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);cursor:pointer;padding:var(--space-3)}.file-upload-icon{color:var(--color-text-secondary);opacity:.5}.file-upload-label-text{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text)}.file-upload-label-formats{font-size:var(--font-size-xs);color:var(--color-text-secondary)}.file-upload-selected{display:flex;align-items:center;justify-content:center;gap:var(--space-2);color:var(--color-primary)}.file-upload-name{font-size:var(--font-size-sm);font-weight:500}.file-upload-remove{background:none;border:none;font-size:1.25rem;color:var(--color-text-secondary);cursor:pointer;padding:0 4px;line-height:1}.file-upload-remove:hover{color:var(--color-danger)}.file-upload-info{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-style:italic;text-align:center}@media (max-width: 640px){.file-upload-dropzone{padding:var(--space-4)}}.file-upload .folder-select-row{display:flex;gap:var(--space-2);align-items:center}.file-upload .folder-select-row .form-input{flex:1;min-width:0}.file-upload .folder-select-row select.form-input{-webkit-appearance:auto;-moz-appearance:auto;appearance:auto}.fp-wrapper{position:relative}.fp-display{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);font-size:var(--font-size-sm);min-height:40px;gap:var(--space-2)}.fp-display:hover{border-color:var(--color-primary)}.fp-display.fp-open{border-color:var(--color-primary);border-bottom-left-radius:0;border-bottom-right-radius:0;box-shadow:0 0 0 3px #6366f114}.fp-display.fp-disabled{opacity:.6;cursor:not-allowed}.fp-display-path{display:flex;align-items:center;gap:4px;color:var(--color-text);font-weight:500;flex:1;min-width:0;overflow:hidden}.fp-display-icon{color:var(--color-primary);flex-shrink:0}.fp-placeholder{color:var(--color-text-secondary)}.fp-clear{padding:2px 6px;background:none;border:none;color:var(--color-text-secondary);cursor:pointer;font-size:16px;line-height:1;border-radius:var(--radius-sm);flex-shrink:0}.fp-clear:hover{background:var(--color-bg);color:var(--color-text)}.fp-sep{color:var(--color-text-secondary);opacity:.5;flex-shrink:0}.fp-panel{display:flex;flex-direction:column;border:1px solid var(--color-primary);border-top:none;border-radius:0 0 var(--radius-md) var(--radius-md);background:var(--color-white);max-height:300px;overflow-y:auto;box-shadow:0 4px 16px #00000014}.fp-breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:2px;padding:8px 12px;background:var(--color-bg);border-bottom:1px solid var(--color-border);font-size:var(--font-size-xs)}.fp-crumb{padding:2px 6px;background:none;border:none;font-family:var(--font-family);font-size:var(--font-size-xs);color:var(--color-primary);cursor:pointer;border-radius:var(--radius-sm);display:inline-flex;align-items:center;gap:3px}.fp-crumb:hover{background:var(--color-white)}.fp-item{display:flex;align-items:center;gap:var(--space-2);padding:10px 12px;background:none;border:none;border-bottom:1px solid var(--color-border);font-family:var(--font-family);font-size:var(--font-size-sm);color:var(--color-text);cursor:pointer;transition:background var(--transition);text-align:left;width:100%}.fp-item:last-child{border-bottom:none}.fp-item:hover{background:var(--color-bg)}.fp-item svg:first-child{color:var(--color-primary);flex-shrink:0}.fp-arrow{margin-left:auto;color:var(--color-text-secondary)}.fp-item-select{background:var(--color-primary-light, rgba(99, 102, 241, .06));font-weight:500}.fp-item-select:hover{background:var(--color-primary);color:#fff}.fp-item-select:hover svg{color:#fff}.fp-item-add{color:var(--color-primary);font-weight:500}.fp-new{display:flex;gap:var(--space-2);align-items:center;padding:8px 12px;border-bottom:1px solid var(--color-border)}.fp-new-input{flex:1;min-width:0;padding:6px 10px;font-size:var(--font-size-sm)}.fp-empty{padding:16px 12px;text-align:center;color:var(--color-text-secondary);font-size:var(--font-size-sm)}.card-list{display:flex;flex-direction:column;gap:var(--space-3)}.folder-breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:2px;padding:8px 12px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-sm)}.breadcrumb-item{padding:4px 8px;background:none;border:none;border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-size-sm);color:var(--color-primary);cursor:pointer;transition:all var(--transition);display:inline-flex;align-items:center;gap:4px}.breadcrumb-item:hover{background:var(--color-white)}.breadcrumb-item.active{color:var(--color-text);font-weight:600;cursor:default}.breadcrumb-item.active:hover{background:none}.breadcrumb-segment{display:inline-flex;align-items:center}.breadcrumb-sep{color:var(--color-text-secondary);opacity:.5}.card-list-search{position:relative;max-width:400px}.card-list-search .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--color-text-secondary);pointer-events:none}.card-list-search .form-input{padding-left:36px}.folder-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--space-3)}.folder-card{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-4);background:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition);box-shadow:var(--shadow-sm)}.folder-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md);transform:translateY(-2px)}.folder-card-icon{color:var(--color-primary);opacity:.8}.folder-card-info{display:flex;flex-direction:column;gap:2px}.folder-card-name{font-size:var(--font-size-base);font-weight:600;color:var(--color-text)}.folder-card-count{font-size:var(--font-size-xs);color:var(--color-text-secondary)}.folder-card-progress{display:flex;align-items:center;gap:var(--space-2);margin-top:var(--space-1)}.folder-progress-bar{flex:1;height:4px;background:var(--color-border);border-radius:999px;overflow:hidden}.folder-progress-fill{height:100%;background:var(--color-success);border-radius:999px;transition:width .3s ease}.folder-progress-text{font-size:var(--font-size-xs);color:var(--color-text-secondary);white-space:nowrap}.folder-card-actions{display:flex;gap:4px;margin-top:var(--space-1)}.folder-card-actions .btn-icon{padding:6px;border-radius:var(--radius-sm);opacity:0;transition:all var(--transition)}.folder-card:hover .folder-card-actions .btn-icon{opacity:1}.folder-card-actions .btn-icon:hover{color:var(--color-primary);background:var(--color-primary-light)}.card-detail-footer-actions{display:flex;align-items:center;gap:var(--space-2)}.folder-detail-header{display:flex;align-items:center;gap:var(--space-2);color:var(--color-primary)}.folder-detail-title{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text)}.folder-detail-count{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-left:auto}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-3)}.card-preview{position:relative;display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-3);background:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:all var(--transition)}.card-preview:hover{box-shadow:var(--shadow-md)}.card-preview.card-known{border-left:3px solid var(--color-success)}.card-preview.card-unknown{border-left:3px solid var(--color-danger)}.card-preview-status{position:absolute;top:12px;right:12px}.status-dot{display:inline-block;width:8px;height:8px;border-radius:50%}.status-known{background:var(--color-success)}.status-unknown{background:var(--color-danger)}.card-preview-question{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text);line-height:1.5}.card-preview-answer{font-size:var(--font-size-xs);color:var(--color-text-secondary);line-height:1.4}.card-preview-footer{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:var(--space-2);border-top:1px solid var(--color-border)}.card-preview-date{font-size:var(--font-size-xs);color:var(--color-text-secondary)}@media (max-width: 640px){.card-list-search{max-width:100%}.folder-grid,.card-grid{grid-template-columns:1fr}}.topic-card{cursor:default}.topic-card .folder-card-top{display:flex;flex-direction:column;gap:var(--space-2);cursor:pointer}.topic-move-btn{padding:4px 10px;background:none;border:1px solid var(--color-border);border-radius:var(--radius-md);font-family:var(--font-family);font-size:var(--font-size-xs);color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition);align-self:flex-start}.topic-move-btn:hover{background:var(--color-bg);color:var(--color-primary);border-color:var(--color-primary)}.move-folder-list{display:flex;flex-direction:column;gap:var(--space-2);margin:var(--space-3) 0}.move-folder-option{display:flex;align-items:center;gap:var(--space-2);width:100%;text-align:left;justify-content:flex-start}.move-new-folder{display:flex;gap:var(--space-2);align-items:center}.move-new-folder .form-input{flex:1;min-width:0}.move-folder-select-group{margin:var(--space-3) 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label{display:block;font-size:var(--font-size-sm);font-weight:500;margin-bottom:4px;color:var(--color-text)}.documents-modal-field input,.documents-modal-field textarea{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-size-sm);background:var(--color-bg);color:var(--color-text)}.documents-modal-field input:disabled{opacity:.6}.documents-modal-field input:focus,.documents-modal-field textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f11a}.documents-modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:var(--space-4)}@media (max-width: 640px){.documents-header,.documents-category-select{flex-direction:column}.documents-or{display:none}.document-card{flex-wrap:wrap}.document-card-actions{width:100%;justify-content:flex-end;border-top:1px solid var(--color-border);padding-top:8px;margin-top:4px}}.settings-page{padding:var(--space-6) var(--space-4);max-width:900px;margin:0 auto;padding-bottom:100px}.settings-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--space-5);gap:var(--space-3)}.settings-title{display:flex;align-items:center;gap:10px;font-size:1.6rem;font-weight:700;color:var(--color-text);margin:0}.settings-title-icon{color:var(--color-primary)}.settings-subtitle{color:var(--color-text-secondary);font-size:var(--font-size-sm);margin:4px 0 0}.settings-header-actions{display:flex;gap:8px}.settings-header-actions .btn{display:inline-flex;align-items:center;gap:6px}.settings-alert{display:flex;align-items:center;gap:6px;padding:10px 14px;border-radius:var(--radius-md);font-size:var(--font-size-sm);margin-bottom:var(--space-4);animation:slideDown .2s ease}.settings-alert--error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.settings-alert--success{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.settings-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);margin-bottom:var(--space-5)}.settings-stat-card{display:flex;align-items:center;gap:12px;padding:16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:all .2s}.settings-stat-card:hover{border-color:var(--color-primary);box-shadow:0 2px 8px #6366f114}.settings-stat-icon{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0}.settings-stat-icon--users{background:#eff6ff;color:#2563eb}.settings-stat-icon--cards{background:#f0fdf4;color:#16a34a}.settings-stat-icon--docs{background:#fdf4ff;color:#9333ea}.settings-stat-icon--storage{background:#fff7ed;color:#ea580c}.settings-stat-info{display:flex;flex-direction:column}.settings-stat-value{font-size:1.25rem;font-weight:700;color:var(--color-text);line-height:1.2}.settings-stat-label{font-size:.72rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.settings-groups{display:flex;flex-direction:column;gap:var(--space-4)}.settings-group{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.settings-group-header{display:flex;align-items:center;gap:8px;padding:14px 20px;background:var(--color-bg);border-bottom:1px solid var(--color-border)}.settings-group-header h2{font-size:.95rem;font-weight:600;color:var(--color-text);margin:0}.settings-group-header svg{color:var(--color-primary)}.settings-group-body{padding:4px 0}.settings-field{display:grid;grid-template-columns:200px 1fr;gap:var(--space-3);align-items:start;padding:14px 20px;border-bottom:1px solid rgba(0,0,0,.04)}.settings-field:last-child{border-bottom:none}.settings-field-label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text);padding-top:8px}.settings-field-input input,.settings-field-input select,.settings-field-input textarea{width:100%;padding:8px 12px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-family:var(--font-family);font-size:var(--font-size-sm);background:var(--color-bg);color:var(--color-text);transition:border-color .2s}.settings-field-input input:focus,.settings-field-input select:focus,.settings-field-input textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #6366f11a}.settings-field-input textarea{resize:vertical;min-height:60px}.settings-field-key{display:block;font-size:.68rem;color:var(--color-text-secondary);opacity:.6;margin-top:3px;font-family:SF Mono,Fira Code,monospace}.settings-secret-input{position:relative;display:flex}.settings-secret-input input{padding-right:40px}.settings-secret-toggle{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;color:var(--color-text-secondary);padding:4px;display:flex;align-items:center}.settings-secret-toggle:hover{color:var(--color-primary)}.settings-save-bar{position:fixed;bottom:0;left:0;right:0;display:flex;align-items:center;justify-content:center;gap:var(--space-3);padding:12px 20px;background:#fffffff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--color-border);box-shadow:0 -4px 20px #00000014;z-index:100;animation:slideUp .25s ease}.settings-save-bar span{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:500}.settings-version{display:flex;flex-direction:column;align-items:center;gap:2px;margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--color-border);font-size:var(--font-size-sm);color:var(--color-text-secondary)}.settings-version-detail{font-size:var(--font-size-xs);color:var(--color-text-secondary);opacity:.6}.settings-save-bar .btn{display:inline-flex;align-items:center;gap:6px}@media (max-width: 768px){.settings-stats{grid-template-columns:repeat(2,1fr)}.settings-field{grid-template-columns:1fr;gap:4px}.settings-field-label{padding-top:0}.settings-header{flex-direction:column}}@media (max-width: 480px){.settings-stats{grid-template-columns:1fr}}@keyframes slideUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}.user-profile{max-width:700px;margin:0 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h2{font-size:var(--font-size-base);font-weight:600;color:var(--color-text);margin:0}.profile-section-body{padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-4)}.profile-field{display:flex;flex-direction:column;gap:6px}.profile-field-label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-secondary)}.profile-field-value{font-size:var(--font-size-base);font-weight:500;color:var(--color-text)}.profile-field-hint{font-size:var(--font-size-xs);color:var(--color-text-secondary);opacity:.8}.profile-role-badge{display:inline-flex;padding:2px 10px;font-size:var(--font-size-xs);font-weight:600;border-radius:var(--radius-full);background:var(--color-bg);color:var(--color-text-secondary);border:1px solid var(--color-border)}.profile-role-badge.role-admin{background:var(--color-primary-light, rgba(99, 102, 241, .1));color:var(--color-primary);border-color:transparent}.profile-goal-input-row{display:flex;align-items:center;gap:var(--space-2)}.profile-goal-input{width:100px;text-align:center;font-weight:600;font-size:var(--font-size-base)}.profile-goal-input-row .btn{display:inline-flex;align-items:center;gap:6px}.profile-goal-progress{padding:var(--space-3) var(--space-4);background:var(--color-bg);border-radius:var(--radius-md);border:1px solid var(--color-border)}.profile-goal-progress-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-2)}.profile-goal-progress-label{font-size:var(--font-size-sm);color:var(--color-text-secondary);font-weight:500}.profile-goal-progress-value{font-size:var(--font-size-sm);font-weight:600;color:var(--color-text)}.profile-goal-bar{height:8px;background:var(--color-white);border-radius:4px;overflow:hidden;border:1px solid var(--color-border)}.profile-goal-fill{height:100%;border-radius:4px;transition:width .4s ease}.profile-goal-congrats{display:flex;align-items:center;gap:6px;margin-top:var(--space-2);font-size:var(--font-size-sm);font-weight:600;color:var(--color-success)}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--color-white: #ffffff;--color-bg: #f0f2f5;--color-surface: #ffffff;--color-border: #e0e4ea;--color-text: #111827;--color-text-secondary: #6b7280;--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-primary-light: #eef2ff;--color-danger: #dc2626;--color-danger-hover: #b91c1c;--color-success: #059669;--color-warning: #f59e0b;--color-accent: #8b5cf6;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07), 0 2px 4px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -4px rgba(0, 0, 0, .05);--shadow-card: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px -1px rgba(0, 0, 0, .06);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 8px 10px -6px rgba(0, 0, 0, .05);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--space-1: 4px;--space-2: 8px;--space-3: 16px;--space-4: 24px;--space-5: 32px;--space-6: 48px;--space-7: 64px;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--transition: .2s ease}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background-color:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--color-primary-hover)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 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14px;font-size:var(--font-size-xs)}.btn-icon{padding:8px;background:none;border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;color:var(--color-text-secondary);transition:all var(--transition)}.btn-icon:hover{background:var(--color-bg);color:var(--color-text)}.form-group{display:flex;flex-direction:column;gap:var(--space-2)}.form-label{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text)}.form-input,.form-select,.form-textarea{padding:10px 14px;font-family:var(--font-family);font-size:var(--font-size-base);color:var(--color-text);background:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-md);transition:border-color var(--transition),box-shadow var(--transition);outline:none;width:100%}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1f}.form-input::placeholder,.form-textarea::placeholder{color:var(--color-text-secondary);opacity:.6}.form-textarea{resize:vertical;min-height:80px}.card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--space-4);border:1px solid var(--color-border);transition:box-shadow .2s ease,transform .2s ease}.container{max-width:1000px;margin:0 auto;padding:0 var(--space-4)}.page{padding:var(--space-5) 0 var(--space-7)}.page-header{margin-bottom:var(--space-5)}.page-title{font-size:var(--font-size-3xl);font-weight:800;color:var(--color-text);letter-spacing:-.03em;line-height:1.2}.page-subtitle{font-size:var(--font-size-base);color:var(--color-text-secondary);margin-top:var(--space-2)}.table-wrapper{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--color-border)}table{width:100%;border-collapse:collapse;font-size:var(--font-size-sm)}thead{background:var(--color-bg)}th{padding:12px 16px;text-align:left;font-weight:600;color:var(--color-text-secondary);font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--color-border)}td{padding:12px 16px;border-bottom:1px solid var(--color-border);color:var(--color-text)}tr:last-child td{border-bottom:none}tr:hover{background:var(--color-primary-light)}.badge{display:inline-block;padding:2px 10px;font-size:var(--font-size-xs);font-weight:500;border-radius:999px;background:var(--color-primary-light);color:var(--color-primary)}.alert{padding:12px 16px;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500}.alert-error{background:#fef2f2;color:var(--color-danger);border:1px solid #fecaca}.alert-success{background:#f0fdf4;color:var(--color-success);border:1px solid #bbf7d0}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:fadeIn .15s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--color-white);border-radius:var(--radius-xl);padding:var(--space-5);max-width:440px;width:90%;box-shadow:var(--shadow-xl);animation:slideUp .2s ease}@keyframes slideUp{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-title{font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--space-2)}.modal-text{font-size:var(--font-size-sm);color:var(--color-text-secondary);margin-bottom:var(--space-4);line-height:1.5}.modal-actions{display:flex;gap:var(--space-2);justify-content:flex-end}.progress-bar{width:100%;height:8px;background:var(--color-border);border-radius:999px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-accent, var(--color-primary)));border-radius:999px;transition:width .4s cubic-bezier(.4,0,.2,1)}.empty-state{text-align:center;padding:var(--space-7) var(--space-4);color:var(--color-text-secondary)}.empty-state-icon{font-size:3rem;margin-bottom:var(--space-3);opacity:.4}.empty-state-title{font-size:var(--font-size-lg);font-weight:600;color:var(--color-text);margin-bottom:var(--space-2)}.empty-state-text{font-size:var(--font-size-sm);max-width:320px;margin:0 auto}.spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-center{display:flex;align-items:center;justify-content:center;padding:var(--space-7)}@media (max-width: 640px){.container{padding:0 var(--space-3)}.page-title{font-size:var(--font-size-xl)}th,td{padding:8px 12px}.modal{width:95%;padding:var(--space-3)}.btn{padding:10px 16px}}[data-theme=dark]{--color-white: #18181b;--color-bg: #09090b;--color-surface: #18181b;--color-border: #27272a;--color-text: #fafafa;--color-text-secondary: #a1a1aa;--color-primary: #818cf8;--color-primary-hover: #a5b4fc;--color-primary-light: rgba(129, 140, 248, .1);--color-danger: #f87171;--color-danger-hover: #fca5a5;--color-success: #34d399;--color-warning: #fbbf24;--color-accent: #a78bfa;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .6);--shadow-card: 0 1px 3px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .7)}[data-theme=dark] .navbar{background:#18181bd9}[data-theme=dark] .study-btn-known{background:#34d3991f;border-color:#34d3994d}[data-theme=dark] .study-btn-unknown{background:#f871711f;border-color:#f871714d}[data-theme=dark] .summary-stat-known{background:#34d3991f}[data-theme=dark] .summary-stat-unknown{background:#f871711f}[data-theme=dark] .alert-error{background:#f871711f;border-color:#f871714d}[data-theme=dark] .alert-success{background:#34d3991f;border-color:#34d3994d}