*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #1f1f1f;--bg-secondary: #131314;--bg-tertiary: #2d2e30;--bg-elevated: #37393b;--bg-hover: #3c4043;--bg-active: #004a77;--accent-primary: #8ab4f8;--accent-secondary: #aecbfa;--accent-light: #004a77;--accent-bg: #004a77;--drive-green: #81c995;--drive-yellow: #fdd663;--drive-blue: #8ab4f8;--drive-red: #f28b82;--success: #81c995;--warning: #fdd663;--error: #f28b82;--info: #8ab4f8;--text-primary: #e8eaed;--text-secondary: #9aa0a6;--text-muted: #71767a;--text-disabled: #5f6368;--border-subtle: #3c4043;--border-default: #5f6368;--border-strong: #80868b;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 1px 3px rgba(0, 0, 0, .4), 0 4px 8px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .5);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--font-family: "Google Sans", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-md: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--transition-fast: .1s ease;--transition-normal: .2s ease;--sidebar-width: 256px;--header-height: 64px}html,body{height:100%}body{font-family:var(--font-family);font-size:var(--font-size-md);line-height:1.5;color:var(--text-primary);background:var(--bg-secondary);-webkit-font-smoothing:antialiased}#root{height:100%}.app-layout{display:flex;height:100%;overflow:hidden;background:var(--bg-secondary)}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-primary);border-radius:var(--radius-lg) 0 0 0;margin-top:var(--header-height)}.content-area{flex:1;overflow-y:auto;padding:var(--spacing-lg)}.content-area::-webkit-scrollbar{width:8px}.content-area::-webkit-scrollbar-track{background:transparent}.content-area::-webkit-scrollbar-thumb{background:var(--bg-elevated);border-radius:var(--radius-full)}.header{position:fixed;top:0;left:var(--sidebar-width);right:0;height:var(--header-height);display:flex;align-items:center;padding:0 var(--spacing-md);background:var(--bg-secondary);z-index:50;gap:var(--spacing-md)}.search-container{flex:1;max-width:720px;position:relative}.search-input{width:100%;height:48px;padding:0 var(--spacing-md) 0 48px;background:var(--bg-tertiary);border:none;border-radius:var(--radius-full);color:var(--text-primary);font-size:var(--font-size-md);transition:all var(--transition-fast)}.search-input::placeholder{color:var(--text-muted)}.search-input:focus{outline:none;background:var(--bg-elevated)}.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-secondary)}.header-actions{display:flex;align-items:center;gap:var(--spacing-sm)}.view-toggle{display:flex;gap:2px;background:var(--bg-tertiary);border-radius:var(--radius-sm);padding:2px}.view-toggle-btn{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border:none;background:none;color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all var(--transition-fast)}.view-toggle-btn.active{background:var(--bg-elevated);color:var(--text-primary)}.view-toggle-btn:hover:not(.active){color:var(--text-primary)}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);display:flex;flex-direction:column;padding:var(--spacing-sm);gap:var(--spacing-xs);position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-logo{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md);margin-bottom:var(--spacing-sm)}.sidebar-logo img,.sidebar-logo svg{width:40px;height:40px}.sidebar-logo h1{font-size:22px;font-weight:400;color:var(--text-primary)}.new-button{display:flex;align-items:center;gap:var(--spacing-md);margin:var(--spacing-xs) var(--spacing-sm) var(--spacing-md);padding:var(--spacing-sm) var(--spacing-lg);background:var(--bg-tertiary);border:none;border-radius:var(--radius-lg);color:var(--text-primary);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.new-button:hover{background:var(--bg-elevated);box-shadow:var(--shadow-md)}.new-button svg{width:24px;height:24px}.sidebar-nav{display:flex;flex-direction:column;gap:2px;padding:0 var(--spacing-xs)}.nav-item{display:flex;align-items:center;gap:var(--spacing-md);padding:0 var(--spacing-md);height:32px;border-radius:var(--radius-full);color:var(--text-primary);font-weight:500;font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-fast);border:none;background:none;width:100%;text-align:left}.nav-item:hover{background:var(--bg-hover)}.nav-item.active{background:var(--accent-bg);color:var(--accent-primary)}.nav-item svg{width:20px;height:20px;flex-shrink:0}.nav-divider{height:1px;background:var(--border-subtle);margin:var(--spacing-sm) var(--spacing-md)}.storage-info{margin-top:auto;padding:var(--spacing-md)}.storage-bar{width:100%;height:4px;background:var(--bg-tertiary);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--spacing-xs)}.storage-bar-fill{height:100%;background:var(--accent-primary);border-radius:var(--radius-full)}.storage-text{font-size:var(--font-size-xs);color:var(--text-secondary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:0 var(--spacing-lg);height:36px;border:none;border-radius:var(--radius-full);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap}.btn svg{width:18px;height:18px}.btn-primary{background:var(--accent-primary);color:#202124}.btn-primary:hover{background:var(--accent-secondary)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary)}.btn-secondary:hover{background:var(--bg-elevated)}.btn-ghost{background:transparent;color:var(--text-secondary)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--radius-full)}.btn-danger{background:var(--error);color:#202124}.page-title{font-size:var(--font-size-2xl);font-weight:400;color:var(--text-primary);margin-bottom:var(--spacing-lg)}.breadcrumb{display:flex;align-items:center;gap:2px;padding:0 0 var(--spacing-md);font-size:var(--font-size-sm)}.breadcrumb-item{display:flex;align-items:center;gap:var(--spacing-xs);color:var(--text-secondary);cursor:pointer;padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--radius-sm);transition:all 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svg{width:24px;height:24px;color:var(--text-secondary);flex-shrink:0}.folder-card-info{flex:1;min-width:0}.folder-card-name{font-size:var(--font-size-sm);font-weight:500;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-card-meta{font-size:var(--font-size-xs);color:var(--text-muted)}.folder-card-actions{opacity:0;transition:opacity var(--transition-fast)}.folder-card:hover .folder-card-actions{opacity:1}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-md)}.file-card{background:var(--bg-tertiary);border-radius:var(--radius-md);overflow:hidden;cursor:pointer;transition:all var(--transition-fast);position:relative}.file-card:hover{background:var(--bg-elevated)}.file-card.selected{outline:2px solid var(--accent-primary)}.file-thumbnail{width:100%;aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);overflow:hidden}.file-thumbnail 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var(--transition-fast)}.file-list-item:hover{background:var(--bg-hover)}.file-list-item.selected{background:var(--accent-bg)}.file-list-name{display:flex;align-items:center;gap:var(--spacing-sm);min-width:0}.file-list-name svg{width:20px;height:20px;color:var(--text-muted);flex-shrink:0}.file-list-name.folder svg{color:var(--text-secondary)}.file-list-name span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:var(--font-size-sm)}.file-list-size,.file-list-date{font-size:var(--font-size-sm);color:var(--text-secondary)}.file-list-actions{display:flex;gap:var(--spacing-xs);opacity:0;transition:opacity var(--transition-fast)}.file-list-item:hover .file-list-actions{opacity:1}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center}.empty-state svg{width:120px;height:120px;color:var(--text-disabled);margin-bottom:var(--spacing-lg)}.empty-state 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var(--transition-fast)}.input::placeholder{color:var(--text-muted)}.input:focus{outline:none;border-color:var(--accent-primary)}.form-group{margin-bottom:var(--spacing-md)}.form-label{display:block;font-size:var(--font-size-sm);color:var(--text-secondary);margin-bottom:var(--spacing-xs)}select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239aa0a6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px}.toast-container{position:fixed;bottom:var(--spacing-lg);left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:var(--spacing-sm);z-index:1002}.toast{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:#323232;border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);color:#fff;font-size:var(--font-size-sm)}.toast.success svg{color:var(--success)}.toast.error svg{color:var(--error)}.toast.warning svg{color:var(--warning)}.toast.info svg{color:var(--info)}.spinner{width:24px;height:24px;border:2px solid var(--border-subtle);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.drop-overlay{position:fixed;inset:0;background:#8ab4f814;border:3px dashed var(--accent-primary);display:flex;align-items:center;justify-content:center;z-index:999;pointer-events:none}.drop-overlay-content{text-align:center;padding:var(--spacing-2xl);background:var(--bg-tertiary);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.drop-overlay-content svg{width:64px;height:64px;color:var(--accent-primary);margin-bottom:var(--spacing-md)}@media(max-width:768px){.sidebar{left:-100%;transition:left var(--transition-normal)}.sidebar.open,.header{left:0}.main-content{margin-left:0;border-radius:0}.file-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}}.fullscreen-preview{position:fixed;inset:0;background:#000000f2;z-index:2000;display:flex;flex-direction:column;animation:fadeIn var(--transition-fast)}.preview-header{display:flex;align-items:center;justify-content:space-between;padding:var(--spacing-sm) var(--spacing-md);background:#00000080;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.preview-header-left{display:flex;align-items:center;gap:var(--spacing-md)}.preview-close-btn{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:none;border:none;color:var(--text-primary);cursor:pointer;border-radius:var(--radius-full);transition:all var(--transition-fast)}.preview-close-btn:hover{background:var(--bg-hover)}.preview-file-info{display:flex;align-items:center;gap:var(--spacing-sm)}.preview-filename{font-size:var(--font-size-md);font-weight:500;color:var(--text-primary);max-width:400px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.preview-header-right{display:flex;align-items:center;gap:var(--spacing-sm)}.preview-body{flex:1;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.preview-content-wrapper{display:flex;align-items:center;justify-content:center;width:100%;height:100%;padding:var(--spacing-lg)}.preview-nav-btn{position:absolute;top:50%;transform:translateY(-50%);width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:#00000080;border:none;color:#fff;cursor:pointer;border-radius:var(--radius-full);transition:all var(--transition-fast);z-index:10}.preview-nav-btn:hover{background:#000c}.preview-nav-btn.prev{left:var(--spacing-lg)}.preview-nav-btn.next{right:var(--spacing-lg)}.preview-image{max-width:100%;max-height:calc(100vh - 120px);object-fit:contain;border-radius:var(--radius-sm)}.preview-pdf{width:100%;height:calc(100vh - 120px);border:none;background:#fff;border-radius:var(--radius-sm)}.preview-text{width:100%;max-width:900px;max-height:calc(100vh - 120px);overflow:auto;padding:var(--spacing-lg);margin:0;font-family:Roboto Mono,Monaco,Consolas,monospace;font-size:14px;line-height:1.6;background:var(--bg-primary);color:var(--text-primary);border-radius:var(--radius-md);white-space:pre-wrap;word-break:break-word}.preview-loading{display:flex;align-items:center;justify-content:center;width:100%;height:100%}.preview-spinner{width:48px;height:48px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite}.preview-error,.preview-unsupported{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);color:var(--text-muted);text-align:center}.preview-error svg,.preview-unsupported svg{opacity:.5}.video-player-container{position:relative;width:100%;max-width:1200px;max-height:calc(100vh - 120px);background:#000;border-radius:var(--radius-md);overflow:hidden}.video-player{width:100%;height:auto;max-height:calc(100vh - 120px);display:block;cursor:pointer}.video-center-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:#000000b3;border-radius:50%;cursor:pointer;transition:all var(--transition-fast)}.video-center-play:hover{background:#000000e6;transform:translate(-50%,-50%) scale(1.1)}.video-controls{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,#000c);padding:var(--spacing-md);opacity:0;transition:opacity var(--transition-normal)}.video-controls.visible{opacity:1}.video-progress{position:relative;height:4px;background:#ffffff4d;border-radius:2px;cursor:pointer;margin-bottom:var(--spacing-sm)}.video-progress:hover{height:6px}.video-progress-filled{height:100%;background:var(--accent-primary);border-radius:2px;position:relative}.video-progress-handle{position:absolute;top:50%;transform:translate(-50%,-50%);width:12px;height:12px;background:var(--accent-primary);border-radius:50%;opacity:0;transition:opacity var(--transition-fast)}.video-progress:hover .video-progress-handle{opacity:1}.video-controls-bar{display:flex;align-items:center;justify-content:space-between}.video-controls-left,.video-controls-right{display:flex;align-items:center;gap:var(--spacing-xs)}.video-control-btn{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:none;border:none;color:#fff;cursor:pointer;border-radius:var(--radius-full);transition:all var(--transition-fast)}.video-control-btn:hover{background:#fff3}.video-volume{display:flex;align-items:center;gap:var(--spacing-xs)}.video-volume-slider{width:80px;height:4px;-webkit-appearance:none;appearance:none;background:#ffffff4d;border-radius:2px;cursor:pointer}.video-volume-slider::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;background:#fff;border-radius:50%;cursor:pointer}.video-time{font-size:var(--font-size-sm);color:#fff;margin-left:var(--spacing-sm);font-variant-numeric:tabular-nums}.audio-player{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xl);padding:var(--spacing-2xl);background:var(--bg-tertiary);border-radius:var(--radius-xl);min-width:400px}.audio-visual{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-lg)}.audio-icon-wrapper{width:120px;height:120px;display:flex;align-items:center;justify-content:center;background:var(--bg-elevated);border-radius:var(--radius-lg)}.audio-icon{display:flex;align-items:flex-end;gap:4px;height:40px}.audio-bar{width:6px;background:var(--accent-primary);border-radius:3px;animation:audioBar .5s ease infinite alternate;animation-play-state:paused}.audio-icon.playing .audio-bar{animation-play-state:running}.audio-bar:nth-child(1){height:60%;animation-delay:0s}.audio-bar:nth-child(2){height:100%;animation-delay:.1s}.audio-bar:nth-child(3){height:40%;animation-delay:.2s}.audio-bar:nth-child(4){height:80%;animation-delay:.3s}@keyframes audioBar{0%{height:20%}to{height:100%}}.audio-filename{font-size:var(--font-size-lg);font-weight:500;color:var(--text-primary);max-width:300px;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.audio-controls{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);width:100%}.audio-play-btn{width:64px;height:64px;display:flex;align-items:center;justify-content:center;background:var(--accent-primary);border:none;border-radius:50%;color:#202124;cursor:pointer;transition:all var(--transition-fast)}.audio-play-btn:hover{background:var(--accent-secondary);transform:scale(1.05)}.audio-progress-container{display:flex;align-items:center;gap:var(--spacing-sm);width:100%}.audio-time{font-size:var(--font-size-xs);color:var(--text-muted);font-variant-numeric:tabular-nums;min-width:40px}.audio-progress{flex:1;height:4px;-webkit-appearance:none;appearance:none;background:var(--bg-primary);border-radius:2px;cursor:pointer}.audio-progress::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;background:var(--accent-primary);border-radius:50%;cursor:pointer}