:root{--color-bg: #0f1419;--color-surface: #1a1f26;--color-surface-hover: #242b33;--color-border: #2d3640;--color-text: #e7e9ea;--color-text-muted: #8b98a5;--color-primary: #f97316;--color-primary-hover: #fb923c;--color-success: #22c55e;--color-error: #ef4444;--color-warning: #eab308;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .3)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}#app{max-width:800px;margin:0 auto;padding:2rem}.header{text-align:center;margin-bottom:3rem}.header h1{font-size:2.5rem;font-weight:700;margin-bottom:.5rem;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-hover));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.tagline{color:var(--color-text-muted);font-size:1.1rem}.section{margin-bottom:2rem}.section h2{font-size:1.25rem;margin-bottom:1rem;color:var(--color-text)}.hidden{display:none!important}.upload-zone{border:2px dashed var(--color-border);border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center;cursor:pointer;transition:all .2s ease;background:var(--color-surface)}.upload-zone:hover,.upload-zone.dragover{border-color:var(--color-primary);background:var(--color-surface-hover)}.upload-zone.dragover{transform:scale(1.01)}.upload-zone-content{pointer-events:none}.upload-icon{width:48px;height:48px;margin-bottom:1rem;color:var(--color-text-muted)}.upload-zone:hover .upload-icon,.upload-zone.dragover .upload-icon{color:var(--color-primary)}.upload-text{font-size:1.25rem;font-weight:500;margin-bottom:.25rem}.upload-subtext{color:var(--color-text-muted);font-size:.9rem}.file-input{position:absolute;width:0;height:0;opacity:0}.transfer-list{display:flex;flex-direction:column;gap:1rem}.transfer-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1rem}.transfer-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.75rem}.transfer-name{font-weight:500;word-break:break-word;flex:1;margin-right:1rem}.transfer-size{color:var(--color-text-muted);font-size:.85rem;white-space:nowrap}.transfer-progress{margin-bottom:.5rem}.progress-bar{height:8px;background:var(--color-border);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:var(--color-primary);border-radius:4px;transition:width .3s ease}.progress-fill.complete{background:var(--color-success)}.progress-fill.error{background:var(--color-error)}.transfer-stats{display:flex;justify-content:space-between;font-size:.85rem;color:var(--color-text-muted)}.transfer-status{display:flex;align-items:center;gap:.5rem}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--color-primary)}.status-dot.complete{background:var(--color-success)}.status-dot.error{background:var(--color-error)}.status-dot.paused{background:var(--color-warning)}.transfer-actions{display:flex;gap:.5rem;margin-top:.75rem}.btn{padding:.5rem 1rem;border:none;border-radius:var(--radius-sm);font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s ease}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-secondary{background:var(--color-surface-hover);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-border)}.btn-danger{background:transparent;color:var(--color-error);border:1px solid var(--color-error)}.btn-danger:hover{background:var(--color-error);color:#fff}.download-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--color-primary);text-decoration:none;font-weight:500}.download-link:hover{text-decoration:underline}.footer{margin-top:3rem;text-align:center;color:var(--color-text-muted);font-size:.85rem}@media (max-width: 600px){#app{padding:1rem}.header h1{font-size:1.75rem}.upload-zone{padding:2rem 1rem}}