:root{--bg-primary: #0f0f23;--bg-secondary: #1a1a2e;--bg-tertiary: #16213e;--bg-card: rgba(26, 26, 46, .8);--bg-hover: rgba(99, 102, 241, .1);--border-color: rgba(99, 102, 241, .2);--border-light: rgba(255, 255, 255, .1);--text-primary: #ffffff;--text-secondary: #a0a0b4;--text-muted: #6b6b80;--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--success: #10b981;--warning: #f59e0b;--danger: #ef4444;--info: #3b82f6;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(99, 102, 241, .3);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s ease;--sidebar-width: 280px;--header-height: 72px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{height:100%}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-primary)}.app-layout{display:flex;height:100vh;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--bg-secondary);border-right:1px solid var(--border-light);display:flex;flex-direction:column;padding:24px 16px;position:relative;z-index:100}.sidebar-logo{display:flex;align-items:center;gap:12px;padding:0 12px 24px;border-bottom:1px solid var(--border-light);margin-bottom:24px}.sidebar-logo svg{width:40px;height:40px;color:var(--accent-primary)}.sidebar-logo h1{font-size:1.25rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.new-button{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:14px 20px;background:var(--accent-gradient);border:none;border-radius:var(--radius-lg);color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition-normal);box-shadow:var(--shadow-glow);margin-bottom:24px}.new-button:hover{transform:translateY(-2px);box-shadow:0 0 30px #6366f180}.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:4px}.nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:var(--radius-md);color:var(--text-secondary);text-decoration:none;font-weight:500;transition:var(--transition-fast);cursor:pointer;border:none;background:transparent;width:100%;text-align:left}.nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.nav-item.active{background:var(--bg-hover);color:var(--accent-primary);border-left:3px solid var(--accent-primary)}.nav-item svg{width:20px;height:20px}.sidebar-storage{padding:16px;background:var(--bg-tertiary);border-radius:var(--radius-md);margin-top:auto}.storage-label{font-size:.85rem;color:var(--text-secondary);margin-bottom:8px}.storage-bar{height:6px;background:var(--border-light);border-radius:3px;overflow:hidden;margin-bottom:8px}.storage-bar-fill{height:100%;background:var(--accent-gradient);border-radius:3px;transition:var(--transition-normal)}.storage-text{font-size:.75rem;color:var(--text-muted)}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden}.header{height:var(--header-height);display:flex;align-items:center;justify-content:space-between;padding:0 32px;background:var(--bg-secondary);border-bottom:1px solid var(--border-light)}.search-bar{display:flex;align-items:center;gap:12px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:10px 20px;width:100%;max-width:600px;transition:var(--transition-fast)}.search-bar:focus-within{border-color:var(--accent-primary);box-shadow:var(--shadow-glow)}.search-bar svg{color:var(--text-muted);width:20px;height:20px}.search-bar input{flex:1;background:transparent;border:none;color:var(--text-primary);font-size:.95rem;outline:none}.search-bar input::placeholder{color:var(--text-muted)}.header-actions{display:flex;align-items:center;gap:16px}.header-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast)}.header-btn:hover{background:var(--bg-hover);color:var(--accent-primary);border-color:var(--accent-primary)}.user-avatar{width:40px;height:40px;border-radius:50%;background:var(--accent-gradient);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1rem;cursor:pointer;transition:var(--transition-fast)}.user-avatar:hover{transform:scale(1.05);box-shadow:var(--shadow-glow)}.content-area{flex:1;overflow-y:auto;padding:32px}.breadcrumb{display:flex;align-items:center;gap:8px;margin-bottom:24px;font-size:.9rem}.breadcrumb-item{color:var(--text-muted);text-decoration:none;cursor:pointer;transition:var(--transition-fast)}.breadcrumb-item:hover{color:var(--accent-primary)}.breadcrumb-item.active{color:var(--text-primary);font-weight:500}.breadcrumb-sep{color:var(--text-muted)}.content-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.content-title{font-size:1.5rem;font-weight:600}.view-toggle{display:flex;gap:4px;background:var(--bg-tertiary);padding:4px;border-radius:var(--radius-md)}.view-toggle button{padding:8px 12px;background:transparent;border:none;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:var(--transition-fast)}.view-toggle button:hover{color:var(--text-primary)}.view-toggle button.active{background:var(--accent-primary);color:#fff}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}.file-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:20px;cursor:pointer;transition:var(--transition-normal);position:relative;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.file-card:hover{transform:translateY(-4px);border-color:var(--accent-primary);box-shadow:var(--shadow-md)}.file-card.selected{border-color:var(--accent-primary);background:var(--bg-hover)}.file-icon{width:64px;height:64px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:var(--radius-md)}.file-icon svg{width:32px;height:32px}.file-icon.folder{color:#fbbf24}.file-icon.image{color:#ec4899}.file-icon.video{color:#8b5cf6}.file-icon.audio{color:#06b6d4}.file-icon.document{color:#3b82f6}.file-icon.pdf{color:#ef4444}.file-icon.code{color:#10b981}.file-icon.archive{color:#f59e0b}.file-name{font-weight:500;font-size:.9rem;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:4px}.file-meta{text-align:center;font-size:.75rem;color:var(--text-muted)}.file-actions{position:absolute;top:12px;right:12px;display:flex;gap:4px;opacity:0;transition:var(--transition-fast)}.file-card:hover .file-actions{opacity:1}.file-action-btn{width:28px;height:28px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:var(--transition-fast)}.file-action-btn:hover{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.file-action-btn.starred{color:#fbbf24}.file-list{display:flex;flex-direction:column;gap:8px}.file-row{display:flex;align-items:center;gap:16px;padding:12px 16px;background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast)}.file-row:hover{border-color:var(--accent-primary);background:var(--bg-hover)}.file-row .file-icon{width:40px;height:40px;margin:0}.file-row .file-icon svg{width:20px;height:20px}.file-row-info{flex:1;min-width:0}.file-row-name{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-row-details{font-size:.8rem;color:var(--text-muted)}.dropzone{border:2px dashed var(--border-color);border-radius:var(--radius-lg);padding:48px;text-align:center;transition:var(--transition-normal);cursor:pointer;margin-bottom:24px}.dropzone:hover,.dropzone.active{border-color:var(--accent-primary);background:var(--bg-hover)}.dropzone svg{width:48px;height:48px;color:var(--accent-primary);margin-bottom:16px}.dropzone h3{font-size:1.1rem;margin-bottom:8px}.dropzone p{color:var(--text-muted);font-size:.9rem}.empty-state{text-align:center;padding:80px 40px}.empty-state svg{width:100px;height:100px;color:var(--text-muted);margin-bottom:24px;opacity:.5}.empty-state h3{font-size:1.25rem;margin-bottom:8px}.empty-state p{color:var(--text-muted)}.modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .2s ease}.modal{background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:32px;width:100%;max-width:480px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);animation:slideUp .3s ease}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.modal-title{font-size:1.25rem;font-weight:600}.modal-close{width:32px;height:32px;background:transparent;border:none;color:var(--text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:var(--transition-fast)}.modal-close:hover{background:var(--bg-hover);color:var(--text-primary)}.form-group{margin-bottom:20px}.form-label{display:block;font-size:.9rem;font-weight:500;margin-bottom:8px;color:var(--text-secondary)}.form-input{width:100%;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;transition:var(--transition-fast)}.form-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-md);font-size:.95rem;font-weight:500;cursor:pointer;transition:var(--transition-fast)}.btn-primary{background:var(--accent-gradient);color:#fff}.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--shadow-glow)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-light)}.btn-secondary:hover{border-color:var(--accent-primary)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#dc2626}.btn-block{width:100%}.preview-modal{max-width:90vw;max-height:90vh;padding:0;overflow:hidden}.preview-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border-light)}.preview-title{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.preview-actions{display:flex;gap:8px}.preview-content{display:flex;align-items:center;justify-content:center;min-height:400px;max-height:70vh;overflow:auto;background:#000}.preview-content img{max-width:100%;max-height:70vh;object-fit:contain}.preview-content video,.preview-content audio{max-width:100%;max-height:70vh}.preview-content pre{width:100%;padding:24px;background:var(--bg-primary);color:var(--text-primary);font-family:Fira Code,monospace;font-size:.9rem;line-height:1.6;overflow:auto;white-space:pre-wrap;word-wrap:break-word}.preview-content iframe{width:100%;height:70vh;border:none}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);padding:20px}.auth-card{width:100%;max-width:420px;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:40px;box-shadow:var(--shadow-lg)}.auth-logo{text-align:center;margin-bottom:32px}.auth-logo svg{width:64px;height:64px;color:var(--accent-primary);margin-bottom:16px}.auth-logo h1{font-size:1.5rem;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.auth-title{text-align:center;font-size:1.25rem;margin-bottom:24px}.auth-footer{text-align:center;margin-top:24px;color:var(--text-muted);font-size:.9rem}.auth-footer a{color:var(--accent-primary);text-decoration:none}.auth-footer a:hover{text-decoration:underline}.error-message{background:#ef44441a;border:1px solid rgba(239,68,68,.3);color:#fca5a5;padding:12px 16px;border-radius:var(--radius-md);margin-bottom:20px;font-size:.9rem}.loading-spinner{width:40px;height:40px;border:3px solid var(--border-light);border-top-color:var(--accent-primary);border-radius:50%;animation:spin .8s linear infinite;margin:40px auto}@keyframes spin{to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.context-menu{position:fixed;background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:8px 0;min-width:180px;box-shadow:var(--shadow-lg);z-index:1001;animation:fadeIn .15s ease}.context-menu-item{display:flex;align-items:center;gap:12px;padding:10px 16px;color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast)}.context-menu-item:hover{background:var(--bg-hover);color:var(--text-primary)}.context-menu-item.danger{color:var(--danger)}.context-menu-item.danger:hover{background:#ef44441a}.context-menu-separator{height:1px;background:var(--border-light);margin:8px 0}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:12px;z-index:1002}.toast{background:var(--bg-secondary);border:1px solid var(--border-light);border-radius:var(--radius-md);padding:14px 20px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-lg);animation:slideUp .3s ease;min-width:280px}.toast.success{border-left:3px solid var(--success)}.toast.error{border-left:3px solid var(--danger)}.toast.warning{border-left:3px solid var(--warning)}.toast.info{border-left:3px solid var(--info)}@media(max-width:768px){.sidebar{position:fixed;left:-100%;height:100%;transition:var(--transition-normal)}.sidebar.open{left:0}.header{padding:0 16px}.content-area{padding:20px}.file-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.modal{margin:16px;padding:24px}}