:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--text-primary: #c9d1d9;--text-secondary: #8b949e;--accent: #58a6ff;--accent-hover: #79b8ff;--success: #3fb950;--warning: #d29922;--error: #f85149;--border: #30363d;--radius: 6px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}.container{max-width:900px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:2rem}header h1{font-size:2.5rem;font-weight:600;margin-bottom:.5rem}.subtitle{color:var(--text-secondary);font-size:1.1rem}.card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.5rem}.card h2{font-size:1.25rem;font-weight:600;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border)}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:3rem 2rem;text-align:center;cursor:pointer;transition:border-color .2s,background-color .2s}.drop-zone:hover,.drop-zone.dragover{border-color:var(--accent);background:#58a6ff0d}.drop-zone-content .icon{font-size:3rem;display:block;margin-bottom:.5rem}.drop-zone-content p{color:var(--text-secondary)}.file-list{margin-top:1rem}.file-list:empty{display:none}.file-item{display:flex;align-items:center;justify-content:space-between;padding:.5rem .75rem;background:var(--bg-tertiary);border-radius:var(--radius);margin-bottom:.5rem}.file-item .file-name{display:flex;align-items:center;gap:.5rem}.file-item .file-size{color:var(--text-secondary);font-size:.875rem}.file-item .remove-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:.25rem;font-size:1rem}.file-item .remove-btn:hover{color:var(--error)}.controls{display:flex;align-items:center;justify-content:space-between;margin-top:1rem;gap:1rem}.controls label{display:flex;align-items:center;gap:.5rem;color:var(--text-secondary)}.controls select{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);padding:.5rem .75rem;font-size:.875rem}.upload-controls{display:flex;gap:.75rem;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;font-size:.875rem;font-weight:500;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);cursor:pointer;transition:background-color .2s,border-color .2s}.btn:hover:not(:disabled){background:var(--border)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.tree-view{margin-top:1rem;font-family:monospace;font-size:.875rem}.tree-view:empty:after{content:"No archive loaded";color:var(--text-secondary);font-style:italic}.tree-item{display:flex;align-items:center;justify-content:space-between;padding:.375rem .5rem;border-radius:var(--radius)}.tree-item:hover{background:var(--bg-tertiary)}.tree-item .item-name{display:flex;align-items:center;gap:.5rem}.tree-item .item-info{display:flex;align-items:center;gap:1rem}.tree-item .item-size{color:var(--text-secondary)}.tree-item .download-btn{background:none;border:none;color:var(--accent);cursor:pointer;padding:.25rem .5rem;font-size:.75rem}.tree-item .download-btn:hover{text-decoration:underline}.tree-item.directory .item-name{color:var(--accent)}.stats{background:var(--bg-tertiary)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:1rem}.stat{text-align:center}.stat-label{display:block;font-size:.75rem;color:var(--text-secondary);text-transform:uppercase;margin-bottom:.25rem}.stat-value{display:block;font-size:1.25rem;font-weight:600}footer{text-align:center;margin-top:2rem;padding-top:1rem;border-top:1px solid var(--border);color:var(--text-secondary);font-size:.875rem}footer a{color:var(--accent);text-decoration:none}footer a:hover{text-decoration:underline}.loading{position:relative;pointer-events:none}.loading:after{content:"";position:absolute;inset:0;background:#0d1117cc;display:flex;align-items:center;justify-content:center;border-radius:var(--radius)}.progress{position:fixed;top:0;left:0;right:0;height:3px;background:var(--bg-tertiary);z-index:1000}.progress-bar{height:100%;background:var(--accent);transition:width .2s}