:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a24;--bg-hover: #22222e;--bg-glass: rgba(255, 255, 255, .03);--border-color: rgba(255, 255, 255, .08);--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: #606070;--accent: #6366f1;--accent-hover: #818cf8;--accent-glow: rgba(99, 102, 241, .3);--folder-color: #fbbf24;--file-color: #60a5fa;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .3);--shadow-md: 0 8px 24px rgba(0, 0, 0, .4);--shadow-lg: 0 16px 48px rgba(0, 0, 0, .5);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--transition: .2s cubic-bezier(.4, 0, .2, 1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:20px 32px;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.logo{display:flex;align-items:center;gap:12px;font-size:1.25rem;font-weight:600;color:var(--text-primary);background:linear-gradient(135deg,var(--accent),var(--accent-hover));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-icon{width:28px;height:28px;color:var(--accent);-webkit-text-fill-color:initial}.search-container{position:relative;flex:1;max-width:400px}.search-icon{position:absolute;left:16px;top:50%;transform:translateY(-50%);width:18px;height:18px;color:var(--text-muted);pointer-events:none}.search-input{width:100%;padding:12px 16px 12px 48px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:100px;color:var(--text-primary);font-size:.875rem;outline:none;transition:border-color var(--transition),box-shadow var(--transition)}.search-input::placeholder{color:var(--text-muted)}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.breadcrumb{display:flex;align-items:center;gap:8px;padding:16px 32px;background:var(--bg-glass);border-bottom:1px solid var(--border-color);overflow-x:auto;flex-wrap:wrap}.breadcrumb-item{display:flex;align-items:center;gap:6px;padding:8px 14px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition)}.breadcrumb-item:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--accent)}.breadcrumb-item svg{width:16px;height:16px}.breadcrumb-separator{color:var(--text-muted);font-size:1.25rem}.main-content{flex:1;padding:32px}.file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px}.file-item{display:flex;flex-direction:column;align-items:center;gap:12px;padding:24px 16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition);position:relative;overflow:hidden}.file-item:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(135deg,var(--accent-glow),transparent);opacity:0;transition:opacity var(--transition)}.file-item:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow-md),0 0 24px var(--accent-glow)}.file-item:hover:before{opacity:1}.file-icon{position:relative;width:56px;height:56px;display:flex;align-items:center;justify-content:center}.file-icon svg{width:48px;height:48px;transition:transform var(--transition)}.file-item:hover .file-icon svg{transform:scale(1.1)}.file-item.is-folder .file-icon svg{color:var(--folder-color)}.file-item:not(.is-folder) .file-icon svg{color:var(--file-color)}.file-name{font-size:.875rem;font-weight:500;text-align:center;word-break:break-word;position:relative;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-meta{font-size:.75rem;color:var(--text-muted);position:relative}.empty-state{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:80px 32px;color:var(--text-muted)}.empty-state svg{width:64px;height:64px;opacity:.5}.empty-state p{font-size:1rem}.pdf-viewer{display:flex;flex-direction:column;height:calc(100vh - 200px);min-height:500px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden}.pdf-header{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color)}.back-button,.download-button{display:flex;align-items:center;gap:8px;padding:10px 18px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:.875rem;font-weight:500;cursor:pointer;transition:all var(--transition);text-decoration:none}.back-button{background:var(--bg-secondary);color:var(--text-secondary)}.back-button:hover{background:var(--bg-hover);color:var(--text-primary)}.download-button{background:var(--accent);color:#fff;border-color:var(--accent);margin-left:auto}.download-button:hover{background:var(--accent-hover);box-shadow:0 0 16px var(--accent-glow)}.back-button svg,.download-button svg{width:18px;height:18px}.pdf-title{font-size:.9375rem;font-weight:500;color:var(--text-primary);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pdf-frame{flex:1;width:100%;background:#fff}.footer{padding:16px 32px;background:var(--bg-secondary);border-top:1px solid var(--border-color);text-align:center;font-size:.8125rem;color:var(--text-muted)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:var(--bg-tertiary);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.header-actions{display:flex;align-items:center;gap:16px}.download-all-button{display:flex;align-items:center;gap:8px;padding:10px 20px;background:linear-gradient(135deg,#10b981,#059669);border:none;border-radius:100px;color:#fff;font-size:.875rem;font-weight:600;text-decoration:none;cursor:pointer;transition:all var(--transition);box-shadow:0 4px 12px #10b9814d}.download-all-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #10b98166}.download-all-button svg{width:18px;height:18px}.file-type-badge{background:#6366f133;color:var(--accent-hover);padding:2px 8px;border-radius:100px;font-weight:500}.file-icon.icon-pdf svg{color:#ef4444}.file-icon.icon-image svg{color:#f472b6}.file-icon.icon-video svg{color:#a78bfa}.file-icon.icon-audio svg{color:#22d3ee}.file-icon.icon-text svg{color:#a3e635}.file-icon.icon-other svg{color:var(--text-muted)}.image-preview{flex:1;display:flex;align-items:center;justify-content:center;padding:24px;background:var(--bg-tertiary);overflow:auto}.image-preview img{max-width:100%;max-height:100%;object-fit:contain;border-radius:var(--radius-sm);box-shadow:var(--shadow-lg)}.video-preview{flex:1;display:flex;align-items:center;justify-content:center;padding:24px;background:#000}.video-preview video{max-width:100%;max-height:100%;border-radius:var(--radius-sm)}.audio-preview{flex:1;display:flex;align-items:center;justify-content:center;padding:48px;background:var(--bg-tertiary)}.audio-preview audio{width:100%;max-width:500px}.download-prompt{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 200px)}.download-prompt-content{display:flex;flex-direction:column;align-items:center;gap:24px;padding:48px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);text-align:center;max-width:480px}.download-prompt-content .back-button{align-self:flex-start}.download-prompt-icon{width:80px;height:80px;display:flex;align-items:center;justify-content:center;background:var(--bg-tertiary);border-radius:50%;color:var(--text-muted)}.download-prompt-icon svg{width:40px;height:40px}.download-prompt-title{font-size:1.25rem;font-weight:600;color:var(--text-primary);word-break:break-word}.download-prompt-text{color:var(--text-secondary);font-size:.9375rem;margin:-12px 0}.download-prompt-actions{display:flex;gap:12px;margin-top:8px}.download-prompt-button{display:flex;align-items:center;gap:8px;padding:12px 24px;border-radius:var(--radius-sm);font-size:.9375rem;font-weight:500;cursor:pointer;transition:all var(--transition);text-decoration:none;border:none}.download-prompt-button.primary{background:var(--accent);color:#fff}.download-prompt-button.primary:hover{background:var(--accent-hover);box-shadow:0 0 20px var(--accent-glow)}.download-prompt-button.secondary{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.download-prompt-button.secondary:hover{background:var(--bg-hover);color:var(--text-primary)}.download-prompt-button svg{width:18px;height:18px}@media (max-width: 768px){.header{flex-direction:column;padding:16px;gap:16px}.search-container{max-width:100%}.main-content{padding:16px}.file-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px}.file-item{padding:16px 12px}.breadcrumb{padding:12px 16px}}