.tool{width:min(100%, var(--page-width));padding:var(--space-lg) 0;margin-inline:auto}.tool-header{margin-bottom:var(--space-lg)}.tool-header h1{margin:0 0 .5rem}.tool-header p{margin:0}.direction-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.25rem;display:flex}.direction-toggle{border-radius:var(--radius);border:1px solid #ccc;display:inline-flex;overflow:hidden}.direction-button{font:inherit;cursor:pointer;background:#fff;border:none;padding:.6rem 1rem;font-size:.9rem;transition:background .15s,color .15s}.direction-button+.direction-button{border-left:1px solid #ccc}.direction-button.active{color:#fff;background:#222}.converter-grid{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.panel{flex-direction:column;display:flex}.panel-header{justify-content:space-between;align-items:center;gap:.75rem;margin-bottom:.5rem;display:flex}.panel-header label{font-weight:600}.row-count{color:#666;font-size:.85rem}.file-upload-label{border-radius:var(--radius);cursor:pointer;border:1px solid #ccc;padding:.4rem .75rem;font-size:.85rem;font-weight:400;transition:background .15s,border-color .15s}.file-upload-label:hover{background:#f0f0f0;border-color:#999}.text-input{resize:vertical;border-radius:var(--radius);border:1px solid #ccc;width:100%;min-height:320px;padding:1rem;font:.9rem/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;display:block}.text-input.drag-over{background:#f5f5f5;border-color:#666}#outputArea{background:#fafafa}.options-bar{border-radius:var(--radius);background:#fafafa;border:1px solid #ddd;flex-wrap:wrap;align-items:center;gap:1.25rem;margin-top:1.25rem;padding:1rem;display:flex}.option-group{align-items:center;gap:.5rem;display:flex}.option-group label{cursor:pointer;align-items:center;gap:.4rem;font-size:.9rem;display:flex}.option-group select{font:inherit;border-radius:var(--radius);border:1px solid #ccc;padding:.45rem .6rem;font-size:.9rem}.option-group.hidden{display:none}.tool-actions{flex-wrap:wrap;justify-content:space-between;gap:1rem;margin-top:1.25rem;display:flex}.action-group{flex-wrap:wrap;gap:.5rem;display:flex}.tool-actions button,.small-button{font:inherit;border-radius:var(--radius);cursor:pointer;background:#fff;border:1px solid #ccc;padding:.6rem 1rem;font-size:.9rem;transition:background .15s,border-color .15s}.tool-actions button:hover,.small-button:hover{background:#f0f0f0;border-color:#999}.tool-actions .primary-button{color:#fff;background:#222;border-color:#222}.tool-actions .primary-button:hover{background:#000;border-color:#000}.danger-button{color:#c62828;border-color:#ef9a9a!important}.danger-button:hover{background:#ffebee!important}.status-message{min-height:1.4rem;margin-top:.75rem;font-size:.9rem}.status-message.error{color:#c62828}.status-message.success{color:#2e7d32}@media (width<=720px){.converter-grid{grid-template-columns:1fr}}