body{margin:0}#root{min-height:100vh}*{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f1117;--surface:#1a1d27;--surface-hover:#232736;--border:#2a2e3d;--text:#e4e4e7;--text-muted:#9ca3af;--primary:#3b82f6;--primary-hover:#2563eb;--danger:#ef4444;--radius:12px;--radius-sm:8px}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.loading-screen{flex-direction:column;justify-content:center;align-items:center;gap:16px;height:100vh;display:flex}.spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading{text-align:center;color:var(--text-muted);padding:60px;font-size:18px}.login-page{justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.login-card{text-align:center;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:400px;padding:48px}.login-icon{color:var(--primary);margin-bottom:16px}.login-card h1{margin-bottom:8px;font-size:32px}.login-card p{color:var(--text-muted);margin-bottom:32px;font-size:15px}.google-btn{color:#333;border-radius:var(--radius-sm);cursor:pointer;background:#fff;border:none;align-items:center;gap:12px;padding:12px 24px;font-size:16px;font-weight:500;transition:box-shadow .2s;display:inline-flex}.google-btn:hover{box-shadow:0 4px 12px #0000004d}.header{background:var(--surface);border-bottom:1px solid var(--border);z-index:50;justify-content:space-between;align-items:center;padding:12px 24px;display:flex;position:sticky;top:0}.header-left{color:var(--primary);align-items:center;gap:10px;display:flex}.header-left h1{color:var(--text);font-size:20px}.header-right{align-items:center;gap:12px;display:flex}.avatar{border-radius:50%;width:32px;height:32px}.user-name{color:var(--text-muted);font-size:14px}.btn-icon{width:32px;height:32px;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;justify-content:center;align-items:center;text-decoration:none;transition:all .15s;display:inline-flex}.btn-icon:hover{background:var(--surface-hover);color:var(--text)}.btn-icon.danger:hover{color:var(--danger)}.btn-primary{background:var(--primary);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:500;text-decoration:none;transition:background .15s;display:inline-flex}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--surface-hover);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;align-items:center;gap:8px;padding:10px 20px;font-size:14px;transition:background .15s;display:inline-flex}.btn-secondary:hover{background:var(--border)}.filter-bar{flex-direction:column;gap:10px;padding:16px 24px;display:flex}.filter-row-top{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.filter-tags-row{flex-wrap:wrap;align-items:center;gap:5px;display:flex}.filter-tags-icon{color:var(--text-muted);flex-shrink:0;margin-right:4px}.filter-tag{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;white-space:nowrap;background:0 0;border-radius:99px;padding:3px 10px;font-size:12px;transition:all .15s}.filter-tag:hover{border-color:var(--primary);color:var(--text)}.filter-tag.active{background:var(--primary);border-color:var(--primary);color:#fff}.filter-tag-clear{color:var(--text-muted);cursor:pointer;background:0 0;border:none;align-items:center;gap:3px;margin-left:4px;padding:3px 8px;font-size:11px;display:inline-flex}.filter-tag-clear:hover{color:var(--danger)}.search-box{flex:1;min-width:200px;max-width:400px;position:relative}.search-box input{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);outline:none;padding:10px 10px 10px 38px;font-size:14px;transition:border-color .15s}.search-box input:focus{border-color:var(--primary)}.search-box input::placeholder{color:var(--text-muted)}.search-icon{color:var(--text-muted);position:absolute;top:50%;left:10px;transform:translateY(-50%)}.filter-group{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.filter-group select{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);cursor:pointer;outline:none;padding:10px 12px;font-size:14px}.category-tabs{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);gap:4px;padding:3px;display:flex}.tab{color:var(--text-muted);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-radius:6px;padding:6px 14px;font-size:13px;transition:all .15s}.tab:hover{color:var(--text)}.tab.active{background:var(--primary);color:#fff}.main{padding-bottom:80px}.file-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;padding:0 24px 24px;display:grid}.empty-state{text-align:center;color:var(--text-muted);padding:80px 20px;font-size:18px}.file-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:all .2s;position:relative;overflow:hidden}.file-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 8px 24px #0000004d}.card-thumbnail{background:var(--bg);border-top:3px solid var(--primary);justify-content:center;align-items:center;height:180px;display:flex;overflow:hidden}.card-thumbnail img{object-fit:cover;width:100%;height:100%}.card-icon-fallback{opacity:.6;justify-content:center;align-items:center;width:100%;height:100%;display:flex}.card-body{padding:12px 16px}.card-title{white-space:nowrap;text-overflow:ellipsis;margin-bottom:4px;font-size:14px;font-weight:600;overflow:hidden}.card-desc{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;margin-bottom:8px;font-size:12px;overflow:hidden}.card-meta{align-items:center;gap:8px;margin-bottom:8px;display:flex}.card-category{text-transform:uppercase;border-radius:4px;padding:2px 8px;font-size:11px;font-weight:600}.card-size{color:var(--text-muted);font-size:12px}.card-tags{flex-wrap:wrap;gap:4px;margin-bottom:8px;display:flex}.card-tag{background:var(--surface-hover);color:var(--text-muted);white-space:nowrap;border-radius:99px;padding:2px 7px;font-size:10px}.card-tag-more{font-style:italic}.card-footer{color:var(--text-muted);justify-content:space-between;font-size:12px;display:flex}.card-actions{opacity:0;gap:4px;transition:opacity .15s;display:flex;position:absolute;top:8px;right:8px}.file-card:hover .card-actions{opacity:1}.card-actions .btn-icon{background:var(--surface);border:1px solid var(--border)}.fab{background:var(--primary);color:#fff;cursor:pointer;z-index:40;border:none;border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;transition:all .2s;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 4px 16px #3b82f666}.fab:hover{background:var(--primary-hover);transform:scale(1.1)}.modal-overlay{z-index:100;background:#000000b3;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);width:100%;max-width:520px;max-height:90vh;padding:24px;overflow-y:auto}.detail-modal{max-width:600px}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-header h2{text-overflow:ellipsis;white-space:nowrap;padding-right:12px;font-size:18px;overflow:hidden}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius-sm);text-align:center;color:var(--text-muted);cursor:pointer;margin-bottom:16px;padding:40px 20px;transition:all .2s}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--primary);color:var(--primary);background:#3b82f60d}.drop-zone p{margin-top:8px}.file-list{max-height:150px;margin-bottom:16px;overflow-y:auto}.file-list-header{color:var(--text-muted);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:8px 10px;font-size:13px;font-weight:600;display:flex}.btn-link{color:var(--primary);cursor:pointer;background:0 0;border:none;padding:0;font-size:12px}.btn-link:hover{text-decoration:underline}.file-list-item{border-bottom:1px solid var(--border);align-items:center;gap:8px;padding:6px 10px;font-size:13px;display:flex}.file-list-name{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.file-list-cat{color:var(--text-muted);text-transform:uppercase;flex-shrink:0;font-size:11px}.folder-btn{justify-content:center;width:100%;margin-bottom:16px}.upload-progress{text-align:center;padding:40px 0}.progress-bar-track{background:var(--bg);border-radius:4px;width:100%;height:8px;margin-bottom:16px;overflow:hidden}.progress-bar-fill{background:var(--primary);border-radius:4px;height:100%;transition:width .3s}.progress-text{margin-bottom:4px;font-size:16px;font-weight:500}.progress-filename{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.bulk-hint{color:var(--text-muted);text-align:center;margin-bottom:16px;font-size:13px;font-style:italic}.drop-hint{color:var(--text-muted);margin-top:4px;font-size:13px}.tag-picker{flex-direction:column;gap:10px;display:flex}.tag-presets{flex-wrap:wrap;gap:6px;display:flex}.tag-chip{border:1px solid var(--border);background:var(--bg);color:var(--text-muted);cursor:pointer;white-space:nowrap;border-radius:99px;align-items:center;gap:4px;padding:5px 12px;font-size:13px;transition:all .15s;display:inline-flex}.tag-chip:hover{border-color:var(--primary);color:var(--text)}.tag-chip.selected{background:var(--primary);border-color:var(--primary);color:#fff}.tag-remove{color:#ffffffb3;cursor:pointer;background:0 0;border:none;margin-left:2px;padding:0;display:inline-flex}.tag-remove:hover{color:#fff}.tag-custom-list{flex-wrap:wrap;gap:6px;display:flex}.tag-input-row{align-items:center;gap:6px;display:flex}.tag-input-row input{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none;flex:1;padding:8px 12px;font-size:13px}.tag-input-row input:focus{border-color:var(--primary)}.form-group{margin-bottom:16px}.form-group label{color:var(--text-muted);margin-bottom:6px;font-size:13px;font-weight:500;display:block}.form-group input,.form-group textarea{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);outline:none;padding:10px 12px;font-size:14px}.form-group input:focus{border-color:var(--primary)}.category-select{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);gap:4px;padding:3px;display:flex}.upload-btn{justify-content:center;width:100%;padding:12px;font-size:16px}.detail-preview{border-radius:var(--radius-sm);background:var(--bg);justify-content:center;align-items:center;min-height:200px;margin-bottom:20px;display:flex;overflow:hidden}.detail-preview img{object-fit:contain;max-width:100%;max-height:400px}.detail-icon{color:var(--text-muted);padding:40px}.detail-info{flex-direction:column;gap:10px;display:flex}.detail-row{border-bottom:1px solid var(--border);justify-content:space-between;padding:6px 0;font-size:14px;display:flex}.detail-row strong{color:var(--text-muted);font-weight:500}.detail-tags{color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:8px;padding:8px 0;display:flex}.tag{background:var(--primary);color:#fff;border-radius:99px;padding:3px 10px;font-size:12px}.detail-actions{gap:10px;margin-top:8px;display:flex}@media (width<=640px){.filter-bar{padding:12px 16px}.file-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;padding:0 16px 16px}.card-thumbnail{height:120px}.header{padding:10px 16px}.user-name{display:none}.category-tabs{overflow-x:auto}.collection-sidebar{display:none}.app-layout{grid-template-columns:1fr}}.app-layout{grid-template-columns:240px 1fr;min-height:calc(100vh - 57px);display:grid}.collection-sidebar{background:var(--surface);border-right:1px solid var(--border);height:calc(100vh - 57px);padding:16px 0;position:sticky;top:57px;overflow-y:auto}.sidebar-header{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;justify-content:space-between;align-items:center;padding:0 16px 12px;font-size:13px;font-weight:600;display:flex}.sidebar-header h3{align-items:center;gap:6px;font-size:12px;display:flex}.sidebar-create{gap:6px;padding:0 12px 12px;display:flex}.sidebar-create input{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);outline:none;flex:1;padding:6px 10px;font-size:13px}.sidebar-create input:focus{border-color:var(--primary)}.btn-sm{padding:6px 12px;font-size:12px}.sidebar-item{cursor:pointer;text-align:left;width:100%;color:var(--text);background:0 0;border:none;align-items:center;gap:10px;padding:8px 16px;font-size:14px;transition:background .15s;display:flex;position:relative}.sidebar-item:hover{background:var(--surface-hover)}.sidebar-item.active{background:var(--primary);color:#fff}.sidebar-item.active .sidebar-item-count{color:#ffffffb3}.sidebar-item-thumb{background:var(--bg);width:32px;height:32px;color:var(--text-muted);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;display:flex;overflow:hidden}.sidebar-item-thumb img{object-fit:cover;width:100%;height:100%}.sidebar-item-info{flex-direction:column;flex:1;min-width:0;display:flex}.sidebar-item-name{white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.sidebar-item-count{color:var(--text-muted);font-size:11px}.sidebar-delete{opacity:0;flex-shrink:0}.sidebar-item:hover .sidebar-delete{opacity:1}.collection-header{padding:20px 24px 8px}.collection-header h2{margin-bottom:4px;font-size:22px}.collection-header p{color:var(--text-muted);font-size:14px}.file-card.select-mode{cursor:pointer}.file-card.selected{border-color:var(--primary);box-shadow:0 0 0 2px #3b82f64d}.card-checkbox{border:2px solid var(--border);background:var(--surface);z-index:10;border-radius:6px;justify-content:center;align-items:center;width:24px;height:24px;transition:all .15s;display:flex;position:absolute;top:12px;left:12px}.card-checkbox.checked{background:var(--primary);border-color:var(--primary);color:#fff}.bulk-bar{background:var(--surface);border:1px solid var(--primary);border-radius:var(--radius);margin:12px 24px;padding:12px 16px}.bulk-bar-top{justify-content:space-between;align-items:center;display:flex}.bulk-count{color:var(--primary);font-size:14px;font-weight:600}.bulk-actions{align-items:center;gap:8px;display:flex}.bulk-panel{border-top:1px solid var(--border);margin-top:12px;padding-top:12px}.bulk-collection-list{flex-direction:column;gap:4px;display:flex}.bulk-collection-item{background:var(--bg);color:var(--text);border-radius:var(--radius-sm);cursor:pointer;border:none;align-items:center;gap:8px;padding:8px 12px;font-size:13px;transition:background .15s;display:flex}.bulk-collection-item:hover{background:var(--surface-hover)}.bulk-collection-item.new{color:var(--primary);font-weight:500}.fab-group{z-index:40;flex-direction:column;gap:12px;display:flex;position:fixed;bottom:24px;right:24px}.fab-secondary{background:var(--surface);width:44px;height:44px;color:var(--text-muted);border:1px solid var(--border);box-shadow:0 4px 12px #0003}.fab-secondary:hover{background:var(--surface-hover);color:var(--text);transform:scale(1.1)}.btn-secondary.active{background:var(--primary);border-color:var(--primary);color:#fff}.btn-select{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;white-space:nowrap;align-items:center;gap:6px;padding:8px 14px;font-size:13px;transition:all .15s;display:inline-flex}.btn-select:hover{border-color:var(--primary);color:var(--text)}.detail-collections{color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:8px;padding:8px 0;display:flex}.detail-collection-link{border:1px solid var(--primary);color:var(--primary);cursor:pointer;background:#3b82f61a;border-radius:99px;align-items:center;gap:4px;padding:4px 12px;font-size:12px;transition:all .15s;display:inline-flex}.detail-collection-link:hover{background:var(--primary);color:#fff}.collection-select{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);width:100%;color:var(--text);cursor:pointer;outline:none;padding:10px 12px;font-size:14px}.collection-select:focus{border-color:var(--primary)}