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var(--border-color);overflow:hidden;display:flex;flex-direction:column}.right-panel{flex:4;background:var(--bg-secondary);overflow:hidden}.file-import-container{display:flex;align-items:center;justify-content:center;height:100%;padding:2rem}.drop-zone{width:100%;max-width:500px;border:2px dashed var(--border-color);border-radius:.75rem;padding:3rem 2rem;text-align:center;transition:all .3s;background:var(--bg-secondary)}.drop-zone.drag-over{border-color:var(--primary-color);background:#6366f10d}.drop-icon{color:var(--text-secondary);margin-bottom:1rem;opacity:.6}.drop-zone h3{font-size:1.5rem;margin-bottom:.5rem}.drop-zone p{color:var(--text-secondary);margin-bottom:1.5rem}.file-selected{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}.spreadsheet-grid-container{display:flex;flex-direction:column;height:100%;overflow:hidden}.grid-header{padding:1.5rem;border-bottom:1px solid 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#6366f11a}.card{background:var(--bg-primary);border-radius:.5rem;box-shadow:var(--shadow-sm);border:1px solid var(--border-color)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease-out}.spinner{border:2px solid var(--border-color);border-top:2px solid var(--primary-color);border-radius:50%;width:20px;height:20px;animation:spin .8s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}