.cube-card { position: relative; text-decoration: none; color: inherit; display: block; }
.upload-zone { transition: all 0.3s ease; }
.upload-zone.dragover { border-color: #3b82f6; background-color: #eff6ff; transform: scale(1.02); }
.file-card { background: white; border: 2px solid #e5e7eb; border-radius: 0.75rem; padding: 1rem; display: flex; align-items: center; gap: 1rem; transition: all 0.2s; cursor: move; }
.file-card:hover { border-color: #3b82f6; box-shadow: 0 4px 12px rgba(0,0,0,0.1); }
.file-card.dragging { opacity: 0.5; transform: rotate(2deg); }
.drag-handle { color: #9ca3af; font-size: 1.25rem; cursor: move; }
.file-icon { font-size: 2rem; }
.file-info { flex: 1; min-width: 0; }
.file-name { display: block; font-weight: 600; color: #1f2937; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { display: block; font-size: 0.875rem; color: #6b7280; }
.btn-remove { background: #fee2e2; color: #ef4444; border: none; width: 2rem; height: 2rem; border-radius: 0.5rem; font-size: 1.5rem; cursor: pointer; transition: all 0.2s; }
.btn-remove:hover { background: #fecaca; transform: scale(1.1); }
.toast { position: fixed; bottom: 2rem; right: 2rem; background: #1f2937; color: white; padding: 1rem 1.5rem; border-radius: 0.5rem; box-shadow: 0 10px 25px rgba(0,0,0,0.3); animation: slideIn 0.3s ease; z-index: 1000; }
.toast.success { background: #10b981; }
.toast.error { background: #ef4444; }
.toast.info { background: #3b82f6; }
@keyframes slideIn { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }