:root{--bg-primary: #1a1d21;--bg-secondary: #252a30;--bg-tertiary: #2d3339;--bg-hover: #353a41;--bg-active: #3a4049;--accent-blue: #0078d4;--accent-blue-hover: #106ebe;--accent-green: #16c60c;--accent-red: #d13438;--accent-orange: #ff8c00;--text-primary: #ffffff;--text-secondary: #b0b7c3;--text-muted: #8a91a8;--text-disabled: #6c757d;--border-color: #3c4043;--border-radius: 8px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .2);--shadow-md: 0 4px 12px rgba(0, 0, 0, .3);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .4);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease;--header-height: 60px;--sidebar-width: 280px;--content-padding: 24px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden}.loading-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--bg-primary);display:flex;align-items:center;justify-content:center;z-index:10000}.loading-content{text-align:center;animation:fadeIn .5s ease-in}.logo-container{display:flex;align-items:center;justify-content:center;gap:12px;margin-bottom:20px;font-size:24px;font-weight:600}.logo-container i{color:var(--accent-blue);font-size:32px}.loading-spinner{width:40px;height:40px;border:3px solid var(--bg-tertiary);border-top:3px solid var(--accent-blue);border-radius:50%;animation:spin 1s linear infinite;margin:20px auto}.main-header{height:var(--header-height);background:var(--bg-secondary);border-bottom:1px solid var(--border-color);display:flex;align-items:center;padding:0 var(--content-padding);position:fixed;top:0;left:0;right:0;z-index:1000}.header-left{display:flex;align-items:center;gap:32px;flex-shrink:0}.header-left .logo-container{font-size:18px;font-weight:600;margin-bottom:0}.breadcrumb{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:14px}.header-center{flex:1;max-width:600px;margin:0 auto;padding:0 40px}.search-container{position:relative;background:var(--bg-tertiary);border-radius:var(--border-radius);border:1px solid var(--border-color);display:flex;align-items:center;padding:0 16px;transition:border-color var(--transition-fast)}.search-container:focus-within{border-color:var(--accent-blue)}.search-container i{color:var(--text-muted);margin-right:12px}.search-container input{background:none;border:none;color:var(--text-primary);font-size:14px;padding:12px 0;flex:1;outline:none}.search-container input::placeholder{color:var(--text-muted)}.search-filters{display:flex;gap:8px;margin-left:12px;padding-left:12px;border-left:1px solid var(--border-color)}.filter-select{background:var(--bg-hover);border:none;color:var(--text-secondary);font-size:12px;padding:4px 8px;border-radius:4px;cursor:pointer;outline:none}.header-right{display:flex;align-items:center;gap:16px;flex-shrink:0}.btn-upload{background:var(--accent-blue);color:#fff;border:none;padding:10px 20px;border-radius:var(--border-radius);font-size:14px;font-weight:500;cursor:pointer;display:flex;align-items:center;gap:8px;transition:background-color var(--transition-fast)}.btn-upload:hover{background:var(--accent-blue-hover)}.user-menu{position:relative}.user-info{display:flex;align-items:center;gap:12px;padding:8px 12px;border-radius:var(--border-radius);cursor:pointer;transition:background-color var(--transition-fast)}.user-info:hover{background:var(--bg-hover)}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent-blue);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.user-details{display:flex;flex-direction:column;line-height:1.2}.user-name{font-size:14px;font-weight:500}.user-role{font-size:12px;color:var(--text-muted)}.user-menu-dropdown{position:absolute;top:100%;right:0;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:8px 0;min-width:200px;box-shadow:var(--shadow-md);display:none;z-index:1001}.user-menu:hover .user-menu-dropdown{display:block}.menu-item{display:flex;align-items:center;gap:12px;padding:12px 16px;color:var(--text-secondary);text-decoration:none;font-size:14px;transition:background-color var(--transition-fast)}.menu-item:hover{background:var(--bg-hover);color:var(--text-primary)}.main-layout{display:flex;margin-top:var(--header-height);min-height:calc(100vh - var(--header-height))}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-color);flex-shrink:0;overflow-y:auto}.sidebar-nav{padding:var(--content-padding)}.nav-section{margin-bottom:32px}.nav-title{font-size:12px;font-weight:600;text-transform:uppercase;color:var(--text-muted);margin-bottom:12px;letter-spacing:.5px}.nav-list{list-style:none}.nav-link{display:flex;align-items:center;gap:12px;padding:12px 16px;color:var(--text-secondary);text-decoration:none;border-radius:var(--border-radius);transition:all var(--transition-fast);margin-bottom:4px;position:relative}.nav-link:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-link.active{background:var(--accent-blue);color:#fff}.nav-link i{width:16px;text-align:center;flex-shrink:0}.nav-link span:first-of-type{flex:1}.nav-count{background:var(--bg-tertiary);color:var(--text-muted);font-size:11px;padding:2px 6px;border-radius:10px;min-width:20px;text-align:center}.nav-link.active .nav-count{background:#fff3;color:#fff}.main-content{flex:1;background:var(--bg-primary);overflow:hidden;display:flex;flex-direction:column}.toolbar{display:flex;align-items:center;justify-content:space-between;padding:16px var(--content-padding);background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.toolbar-left{display:flex;align-items:center;gap:16px}.view-toggle{display:flex;background:var(--bg-tertiary);border-radius:var(--border-radius);padding:2px}.view-btn{background:none;border:none;color:var(--text-muted);padding:8px 12px;border-radius:6px;cursor:pointer;transition:all var(--transition-fast)}.view-btn.active{background:var(--accent-blue);color:#fff}.sort-options select{background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);padding:8px 12px;border-radius:var(--border-radius);cursor:pointer;outline:none}.toolbar-right{display:flex;gap:12px}.btn-secondary{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color);padding:8px 16px;border-radius:var(--border-radius);font-size:14px;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all var(--transition-fast)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary)}.upload-area{margin:16px var(--content-padding);padding:40px;border:2px dashed var(--border-color);border-radius:var(--border-radius);text-align:center;background:var(--bg-secondary);transition:all var(--transition-normal);cursor:pointer}.upload-area:hover,.upload-area.dragover{border-color:var(--accent-blue);background:#0078d40d}.upload-content i{font-size:48px;color:var(--accent-blue);margin-bottom:16px}.upload-content h3{margin-bottom:8px;color:var(--text-primary)}.upload-content p{color:var(--text-muted)}.upload-limits-info{margin-top:12px}.upload-limits-info.admin-unlimited{padding:8px 12px;background:#00b4001a;border:1px solid rgba(0,180,0,.3);border-radius:6px;color:#00b400}.upload-limits-info.user-limited{padding:8px 12px;background:#ffc1071a;border:1px solid rgba(255,193,7,.3);border-radius:6px;color:#ffc107}.upload-visibility-selector{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:14px;flex-wrap:wrap}.visibility-label{color:var(--text-muted);font-size:13px;font-weight:500}.visibility-option{display:flex;align-items:center;gap:6px;padding:6px 14px;border:1px solid var(--border-color);border-radius:20px;cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .2s;-webkit-user-select:none;user-select:none}.visibility-option:hover{border-color:var(--accent-blue);color:var(--accent-blue)}.visibility-option input[type=radio]{accent-color:var(--accent-blue);cursor:pointer}.visibility-option:has(input:checked){border-color:var(--accent-blue);background:#0078d41a;color:var(--accent-blue);font-weight:600}.files-container{flex:1;padding:var(--content-padding);overflow-y:auto;position:relative}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:300px;color:var(--text-muted)}.spinner{width:32px;height:32px;border:3px solid var(--bg-tertiary);border-top:3px solid var(--accent-blue);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}.files-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:20px;padding:8px 0}.files-grid.active{display:grid}.file-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius);overflow:hidden;transition:all var(--transition-normal);cursor:pointer;position:relative}.file-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--accent-blue)}.file-thumbnail-container{position:relative;height:140px;background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;overflow:hidden}.file-thumbnail{width:100%;height:100%;object-fit:cover}.file-icon-large{font-size:48px;color:var(--text-muted);display:flex;align-items:center;justify-content:center;width:100%;height:100%}.video-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#0000004d;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-fast)}.file-card:hover .video-overlay{opacity:1}.play-icon{background:#ffffffe6;color:var(--bg-primary);width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px}.video-duration{position:absolute;bottom:8px;right:8px;background:#000c;color:#fff;padding:2px 6px;border-radius:4px;font-size:12px}.file-actions{position:absolute;top:8px;right:8px;display:flex;gap:4px;opacity:0;transition:opacity var(--transition-fast)}.file-card:hover .file-actions{opacity:1}.action-btn{background:#000000b3;color:#fff;border:none;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background-color var(--transition-fast)}.action-btn:hover{background:var(--accent-blue)}.file-info{padding:16px}.file-name{font-weight:500;margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted)}.files-list{display:none;background:var(--bg-secondary);border-radius:var(--border-radius);overflow:hidden;border:1px solid var(--border-color)}.files-list.active{display:block}.table-header{display:grid;grid-template-columns:1fr 100px 120px 120px;gap:16px;padding:16px 20px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);font-weight:600;font-size:12px;text-transform:uppercase;color:var(--text-muted)}.table-body{max-height:600px;overflow-y:auto}.table-row{display:grid;grid-template-columns:1fr 100px 120px 120px;gap:16px;padding:16px 20px;border-bottom:1px solid var(--border-color);transition:background-color var(--transition-fast);align-items:center}.table-row:hover{background:var(--bg-hover)}.table-cell.name{display:flex;align-items:center;gap:12px}.file-icon-small{font-size:20px;color:var(--text-muted);width:24px;text-align:center}.table-cell.actions{display:flex;gap:8px}.btn-icon{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:4px;border-radius:4px;transition:all var(--transition-fast)}.btn-icon:hover{background:var(--bg-tertiary);color:var(--text-primary)}.empty-state{text-align:center;padding:80px 40px;color:var(--text-muted)}.empty-state i{font-size:64px;margin-bottom:24px;color:var(--text-disabled)}.empty-state h3{margin-bottom:8px;color:var(--text-secondary)}.empty-state p{margin-bottom:24px}.btn-primary{background:var(--accent-blue);color:#fff;border:none;padding:12px 24px;border-radius:var(--border-radius);font-size:14px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:background-color var(--transition-fast)}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;display:none;align-items:center;justify-content:center;z-index:2000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-secondary);border-radius:var(--border-radius);box-shadow:var(--shadow-lg);max-width:500px;width:90%;max-height:90vh;overflow-y:auto;animation:modalSlideIn .3s ease-out}.modal-header{padding:24px 24px 0;text-align:center;position:relative}.modal-header h2,.modal-header h3{margin-bottom:8px}.modal-header p{color:var(--text-muted);font-size:14px}.close-btn{position:absolute;top:16px;right:16px;background:none;border:none;color:var(--text-muted);font-size:18px;cursor:pointer;padding:8px;border-radius:4px;transition:all var(--transition-fast)}.close-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.modal-body{padding:24px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-secondary)}.form-group input{width:100%;background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);padding:12px 16px;border-radius:var(--border-radius);font-size:14px;outline:none;transition:border-color var(--transition-fast)}.form-group input:focus{border-color:var(--accent-blue)}.btn-login{width:100%;background:var(--accent-blue);color:#fff;border:none;padding:12px;border-radius:var(--border-radius);font-size:14px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:16px;transition:background-color var(--transition-fast)}.btn-login:hover{background:var(--accent-blue-hover)}.login-divider{text-align:center;margin:20px 0;position:relative;color:var(--text-muted)}.login-divider:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:var(--border-color)}.login-divider span{background:var(--bg-secondary);padding:0 16px}.btn-guest{width:100%;background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color);padding:12px;border-radius:var(--border-radius);font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all var(--transition-fast)}.btn-guest:hover{background:var(--bg-hover);color:var(--text-primary)}.login-footer{margin-top:20px;text-align:center;padding-top:15px;border-top:1px solid var(--border-color);font-size:.9em;color:var(--text-secondary)}.login-footer a{color:var(--accent-blue);text-decoration:none;font-weight:500}.login-footer a:hover{text-decoration:underline}.share-info{margin-bottom:24px}.file-preview{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg-tertiary);border-radius:var(--border-radius)}.file-preview i{font-size:32px;color:var(--accent-blue)}.file-details h4{margin-bottom:4px}.file-details p{color:var(--text-muted);font-size:14px}.link-input{display:flex;gap:8px}.link-input input{flex:1}.copy-btn{background:var(--accent-blue);color:#fff;border:none;padding:12px 16px;border-radius:var(--border-radius);cursor:pointer;transition:background-color var(--transition-fast);flex-shrink:0}.copy-btn:hover{background:var(--accent-blue-hover)}.share-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px}.toast-container{position:fixed;top:80px;right:20px;z-index:10000;display:flex;flex-direction:column;gap:10px}.toast{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:15px 20px;max-width:350px;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:12px;animation:slideInToast .3s ease-out;transform:translate(400px);opacity:0}.toast.show{transform:translate(0);opacity:1}.toast.success{border-left:4px solid var(--accent-green)}.toast.error{border-left:4px solid var(--accent-red)}.toast.info{border-left:4px solid var(--accent-blue)}.toast.warning{border-left:4px solid var(--accent-orange)}.toast-icon{font-size:18px;flex-shrink:0}.toast.success .toast-icon{color:var(--accent-green)}.toast.error .toast-icon{color:var(--accent-red)}.toast.info .toast-icon{color:var(--accent-blue)}.toast.warning .toast-icon{color:var(--accent-orange)}.toast-message{flex:1;font-size:14px;line-height:1.4}.toast-close{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:background-color .2s}.toast-close:hover{background:#ffffff1a}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes modalSlideIn{0%{transform:translateY(-50px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes slideInToast{0%{transform:translate(400px);opacity:0}to{transform:translate(0);opacity:1}}.action-btn.loading,.btn-icon.loading{position:relative;pointer-events:none;opacity:.7}.action-btn.loading i,.btn-icon.loading i{opacity:0}.action-btn.loading:after,.btn-icon.loading:after{content:"";position:absolute;top:50%;left:50%;width:12px;height:12px;margin:-6px 0 0 -6px;border:2px solid transparent;border-top:2px solid var(--text-primary);border-radius:50%;animation:spin 1s linear infinite}.share-input-success{background-color:var(--accent-green)!important;color:#fff!important;transition:all .3s ease}.download-progress{position:fixed;top:80px;right:20px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:12px 16px;box-shadow:var(--shadow-md);z-index:1001;min-width:280px}.download-progress-header{display:flex;align-items:center;gap:8px;margin-bottom:8px;font-weight:500}.download-progress-file{font-size:12px;color:var(--text-muted);text-overflow:ellipsis;overflow:hidden;white-space:nowrap}@media (max-width: 1024px){.main-layout{flex-direction:column}.sidebar{width:100%;height:auto}.files-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.header-center{padding:0 20px}}@media (max-width: 768px){:root{--sidebar-width: 250px;--content-padding: 16px}.main-header{padding:0 16px}.header-left .logo-container{font-size:16px}.breadcrumb,.search-filters{display:none}.files-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}.table-header,.table-row{grid-template-columns:1fr 80px 100px}.table-cell.size{display:none}}@media (max-width: 480px){.header-center,.user-details{display:none}.toolbar{flex-direction:column;gap:12px;align-items:stretch}.toolbar-left,.toolbar-right{justify-content:center}.files-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}}.download-progress{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:20px;min-width:400px;max-width:500px;box-shadow:var(--shadow-lg);z-index:10000;animation:slideIn .3s ease}.download-progress.detailed{min-width:450px;padding:24px}.download-progress-header{display:flex;align-items:center;gap:12px;margin-bottom:16px;font-weight:600;color:var(--text-primary)}.download-close-btn{margin-left:auto;background:none;border:none;color:var(--text-muted);font-size:16px;cursor:pointer;padding:4px;border-radius:4px;transition:var(--transition-fast)}.download-close-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.download-progress-file{font-size:14px;color:var(--text-secondary);margin-bottom:12px;word-break:break-all;line-height:1.4}.download-progress-size{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted);margin-bottom:8px}.download-progress-bar{width:100%;height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:12px}.download-progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-blue),var(--accent-green));border-radius:4px;transition:width .3s ease;position:relative}.download-progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.2) 50%,transparent 100%);animation:shimmer 2s infinite}.download-progress-stats{display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted);gap:12px}.download-percentage{font-weight:600;color:var(--accent-blue)}.download-speed{color:var(--accent-green)}.download-eta{color:var(--text-secondary)}@keyframes slideIn{0%{opacity:0;transform:translate(-50%,-60%)}to{opacity:1;transform:translate(-50%,-50%)}}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}#uploadProgress{position:fixed;top:0;left:0;width:100%;height:100%;background:#000c;display:flex;align-items:center;justify-content:center;z-index:10000;animation:fadeIn .3s ease}.upload-progress-overlay{background:var(--bg-secondary);border-radius:var(--border-radius);box-shadow:var(--shadow-lg);max-width:500px;width:90%;padding:0;overflow:hidden;border:1px solid var(--border-color)}.upload-progress-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px 16px;border-bottom:1px solid var(--border-color);background:var(--bg-tertiary)}.upload-progress-header h3{margin:0;color:var(--text-primary);font-size:18px;font-weight:600}.cancel-btn{background:var(--accent-red);color:#fff;border:none;width:32px;height:32px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;transition:var(--transition-fast)}.cancel-btn:hover{background:#c13137;transform:scale(1.1)}.file-list{padding:16px 24px;max-height:200px;overflow-y:auto;background:var(--bg-secondary)}.file-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--bg-hover)}.file-item:last-child{border-bottom:none}.file-name{flex:1;color:var(--text-primary);font-weight:500;margin-right:12px;word-break:break-word}.file-size{color:var(--text-secondary);font-size:14px;white-space:nowrap}.progress-bar-container{padding:20px 24px 16px;background:var(--bg-secondary)}.progress-bar{width:100%;height:8px;background:var(--bg-hover);border-radius:4px;overflow:hidden;margin-bottom:12px;position:relative}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-blue),var(--accent-green));border-radius:4px;transition:width .3s ease;position:relative}.progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);animation:shimmer 2s infinite}.progress-text{text-align:center;color:var(--text-primary);font-weight:600;font-size:14px}.upload-stats{display:grid;grid-template-columns:1fr;gap:8px;padding:16px 24px 20px;background:var(--bg-tertiary);border-top:1px solid var(--border-color)}.stat{display:flex;justify-content:space-between;align-items:center}.stat .label{color:var(--text-secondary);font-size:14px}.stat .value{color:var(--text-primary);font-weight:600;font-size:14px}.profile-modal{max-width:800px;width:90%}.profile-section{display:flex;gap:30px;padding:20px 0}.profile-avatar-section{display:flex;flex-direction:column;align-items:center;gap:15px;min-width:200px}.profile-avatar-large{width:150px;height:150px;border-radius:50%;background:linear-gradient(135deg,var(--accent-blue),var(--accent-blue-hover));display:flex;align-items:center;justify-content:center;font-size:64px;box-shadow:var(--shadow-md)}.profile-info{flex:1;display:flex;flex-direction:column;gap:25px}.profile-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:15px}.stat-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius);padding:15px;display:flex;align-items:center;gap:15px;transition:var(--transition-fast)}.stat-card:hover{background:var(--bg-tertiary);transform:translateY(-2px)}.stat-card i{font-size:28px;color:var(--accent-blue)}.stat-info{display:flex;flex-direction:column}.stat-value{font-size:20px;font-weight:600;color:var(--text-primary)}.stat-label{font-size:12px;color:var(--text-secondary)}.profile-details{display:flex;flex-direction:column;gap:15px}.profile-actions{display:flex;gap:10px}.settings-modal{max-width:700px;width:90%}.settings-tabs{display:flex;gap:5px;border-bottom:2px solid var(--border-color);margin-bottom:25px}.settings-tab{flex:1;padding:12px 20px;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast);display:flex;align-items:center;justify-content:center;gap:8px;border-bottom:3px solid transparent;font-size:14px;font-weight:500}.settings-tab:hover{color:var(--text-primary);background:var(--bg-hover)}.settings-tab.active{color:var(--accent-blue);border-bottom-color:var(--accent-blue)}.settings-content{min-height:400px}.settings-tab-content{display:none;animation:fadeIn .3s ease}.settings-tab-content.active{display:block}.settings-tab-content h3{font-size:16px;margin-bottom:15px;color:var(--text-primary);padding-bottom:10px;border-bottom:1px solid var(--border-color)}.sessions-list{display:flex;flex-direction:column;gap:10px}.session-item{display:flex;align-items:center;gap:15px;padding:15px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius)}.session-item i{font-size:24px;color:var(--accent-green)}.session-info{display:flex;flex-direction:column;gap:5px}.session-info strong{color:var(--text-primary);font-size:14px}.session-info span{color:var(--text-secondary);font-size:12px}.btn-danger{background:var(--accent-red);color:var(--text-primary);border:none;padding:10px 20px;border-radius:var(--border-radius);cursor:pointer;transition:var(--transition-fast);font-size:14px;display:inline-flex;align-items:center;gap:8px}.btn-danger:hover{background:#a82a2d;transform:translateY(-2px)}.btn-small{padding:8px 16px;font-size:13px}#resetCode{font-family:Courier New,monospace;font-weight:600}@media (max-width: 768px){.profile-section{flex-direction:column;align-items:center}.profile-avatar-section{width:100%}.profile-stats{grid-template-columns:1fr}.settings-tabs{flex-direction:column}.settings-tab{border-bottom:1px solid var(--border-color);border-left:3px solid transparent}.settings-tab.active{border-left-color:var(--accent-blue);border-bottom-color:var(--border-color)}}.preview-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:15000;opacity:0;transition:opacity .3s ease}.preview-modal-overlay.show{opacity:1}.preview-modal-content{background:var(--bg-secondary);border-radius:var(--border-radius);max-width:90vw;max-height:90vh;width:100%;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--border-color);display:flex;flex-direction:column;transform:scale(.9);transition:transform .3s ease}.preview-modal-overlay.show .preview-modal-content{transform:scale(1)}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid var(--border-color);background:var(--bg-tertiary)}.preview-header h3{margin:0 16px 0 0;color:var(--text-primary);font-size:18px;font-weight:600;word-break:break-word;flex:1}.preview-actions{display:flex;gap:8px}.preview-btn{background:var(--accent-blue);color:#fff;border:none;padding:8px 16px;border-radius:4px;cursor:pointer;font-size:14px;font-weight:500;display:flex;align-items:center;gap:6px;transition:var(--transition-fast)}.preview-btn:hover{background:var(--accent-blue-hover);transform:translateY(-1px)}.preview-btn.close-btn{background:var(--accent-red);padding:8px 12px}.preview-btn.close-btn:hover{background:#c13137}.preview-content{flex:1;padding:24px;overflow:auto;display:flex;align-items:center;justify-content:center;min-height:300px}.preview-footer{padding:16px 24px;border-top:1px solid var(--border-color);background:var(--bg-tertiary)}.file-details{display:flex;flex-wrap:wrap;gap:16px;font-size:14px;color:var(--text-secondary)}.file-details span{color:var(--text-secondary)}.file-details strong{color:var(--text-primary)}.image-preview img{max-width:100%;max-height:70vh;object-fit:contain;border-radius:4px;opacity:0;transition:opacity .3s ease}.video-preview video{border-radius:4px;box-shadow:var(--shadow-md)}.audio-preview{display:flex;flex-direction:column;align-items:center;gap:20px;min-height:200px;justify-content:center}.audio-info{text-align:center;color:var(--text-secondary)}.audio-info i{color:var(--accent-blue);margin-bottom:12px}.audio-info h4{color:var(--text-primary);margin:0;word-break:break-word}.pdf-preview iframe,.text-preview iframe{border-radius:4px;background:#fff}.generic-preview{display:flex;flex-direction:column;align-items:center;gap:16px;min-height:300px;justify-content:center;text-align:center}.file-icon-preview{color:var(--accent-blue);opacity:.7}.generic-preview h4{color:var(--text-primary);margin:0;word-break:break-word;max-width:400px}.generic-preview p{color:var(--text-secondary);margin:0}.preview-actions-center{margin-top:20px}.preview-error{display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--text-secondary);min-height:200px;justify-content:center}.preview-error i{font-size:48px;opacity:.5}.admin-modal .modal-header h2{display:flex;align-items:center;gap:12px}.admin-tabs{display:flex;gap:8px;padding:20px;border-bottom:1px solid var(--border-color);background:var(--bg-secondary)}.admin-tab{padding:12px 24px;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;border-radius:var(--border-radius);transition:var(--transition-fast);display:flex;align-items:center;gap:8px;font-size:14px;font-weight:500}.admin-tab:hover{background:var(--bg-hover);color:var(--text-primary)}.admin-tab.active{background:var(--accent-blue);color:#fff}.admin-content{padding:24px}.admin-tab-content{display:none}.admin-tab-content.active{display:block}.admin-actions{display:flex;gap:12px;margin-bottom:20px}.users-table-container{overflow-x:auto;border-radius:var(--border-radius);background:var(--bg-secondary)}.admin-table{width:100%;border-collapse:collapse}.admin-table th,.admin-table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-color)}.admin-table th{background:var(--bg-tertiary);color:var(--text-secondary);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.admin-table tbody tr{transition:var(--transition-fast)}.admin-table tbody tr:hover{background:var(--bg-hover)}.admin-table tbody tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:4px 12px;border-radius:12px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.badge-admin{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.badge-premium{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff}.badge-regular{background:var(--bg-tertiary);color:var(--text-secondary)}.action-buttons{display:flex;gap:8px;align-items:center}.btn-icon{width:32px;height:32px;padding:0;border:none;border-radius:6px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:var(--transition-fast);font-size:14px}.btn-icon:hover{transform:translateY(-2px)}.btn-success{background:var(--accent-green);color:#fff}.btn-success:hover{background:#14b109}.btn-danger{background:var(--accent-red);color:#fff}.btn-danger:hover{background:#b82c2f}.btn-warning{background:var(--accent-orange);color:#fff}.btn-warning:hover{background:#e67e00}.btn-primary{background:var(--accent-blue);color:#fff;padding:10px 20px;border:none;border-radius:var(--border-radius);cursor:pointer;transition:var(--transition-fast);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:8px}.btn-primary:hover{background:var(--accent-blue-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);padding:10px 20px;border:none;border-radius:var(--border-radius);cursor:pointer;transition:var(--transition-fast);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:8px}.btn-secondary:hover{background:var(--bg-hover)}.card{background:var(--bg-secondary);border-radius:var(--border-radius);padding:20px;box-shadow:var(--shadow-sm)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:13px;font-weight:500;color:var(--text-secondary)}.form-group input,.form-group select{padding:10px 12px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--border-radius);color:var(--text-primary);font-size:14px;transition:var(--transition-fast)}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--accent-blue);background:var(--bg-hover)}.form-actions{display:flex;gap:12px;margin-top:20px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.stat-card{background:var(--bg-secondary);border-radius:var(--border-radius);padding:24px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow-sm);transition:var(--transition-fast)}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-icon{width:60px;height:60px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:28px;background:linear-gradient(135deg,var(--accent-blue) 0%,var(--accent-blue-hover) 100%);color:#fff}.stat-info{flex:1}.stat-label{font-size:13px;color:var(--text-secondary);margin-bottom:4px}.stat-value{font-size:28px;font-weight:700;color:var(--text-primary)}@media (max-width: 768px){.preview-modal-content{max-width:95vw;max-height:95vh}.preview-header{padding:16px 20px;flex-direction:column;gap:12px}.preview-header h3{margin-right:0;text-align:center}.preview-actions{flex-wrap:wrap;justify-content:center}.preview-content{padding:16px}.file-details{flex-direction:column;gap:8px}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}