.mode-section{margin-bottom:24px}.mode-buttons{display:flex;gap:20px;flex-wrap:wrap}.mode-btn{flex:1;background:var(--gray-50);border:2px solid var(--gray-200);padding:20px;border-radius:20px;cursor:pointer;transition:all 0.3s;text-align:center}.mode-btn i{font-size:1.8rem;margin-bottom:12px;display:block;color:var(--gray-500)}.mode-btn span{display:block;font-weight:600;margin-bottom:4px}.mode-btn small{font-size:0.7rem;color:var(--gray-500)}.mode-btn.active{border-color:var(--primary-color);background:linear-gradient(135deg, #e0e7ff, #f0f4ff)}.mode-btn.active i{color:var(--primary-color)}.options-section{background:var(--gray-50);border-radius:16px;padding:20px;margin-bottom:24px;display:flex;flex-wrap:wrap;gap:32px}.option-group{display:flex;flex-wrap:wrap;gap:16px}.checkbox-label{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:0.85rem}.checkbox-label input{display:none}.checkmark{width:18px;height:18px;border:2px solid var(--gray-400);border-radius:4px;display:inline-block;position:relative}.checkbox-label input:checked+.checkmark{background:var(--primary-color);border-color:var(--primary-color)}.checkbox-label input:checked+.checkmark::after{content:'\f00c';font-family:'Font Awesome 6 Free';font-weight:900;font-size:10px;color:white;position:absolute;top:50%;left:50%;transform:translate(-50%, -50%)}.editor-container{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}.editor-panel{background:white;border-radius:20px;overflow:hidden;border:1px solid var(--gray-200);box-shadow:0 4px 20px rgba(0,0,0,0.05)}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:14px 20px;background:linear-gradient(135deg, var(--gray-50), #fafafa);border-bottom:1px solid var(--gray-200)}.panel-title{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--gray-700)}.panel-title i{color:var(--primary-color)}.panel-actions{display:flex;gap:8px}.action-btn{background:transparent;border:none;padding:6px 12px;border-radius:30px;cursor:pointer;transition:all 0.2s;color:var(--gray-600)}.action-btn:hover{background:var(--gray-200);color:var(--primary-color)}.input-textarea{width:100%;min-height:300px;padding:20px;font-family:'Fira Code',monospace;font-size:0.9rem;line-height:1.6;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.input-textarea:focus{outline:none}.output-wrapper{min-height:300px;max-height:400px;overflow:auto;background:#1a1a2e}.output-textarea{margin:0;padding:20px;font-family:'Fira Code',monospace;font-size:0.9rem;line-height:1.6;color:#e0e0e0;white-space:pre-wrap;word-break:break-all}.panel-footer{padding:8px 20px;background:var(--gray-50);border-top:1px solid var(--gray-200);display:flex;justify-content:space-between;font-size:0.7rem;color:var(--gray-500)}.action-buttons{display:flex;justify-content:center;gap:16px;margin-bottom:24px}.btn-convert{padding:12px 32px;font-size:1rem}.char-table-wrapper{margin-top:16px;overflow-x:auto}.char-table{width:100%;border-collapse:collapse;font-size:0.85rem}.char-table th,.char-table td{padding:10px 12px;border:1px solid var(--gray-200);text-align:center}.char-table th{background:var(--gray-50);font-weight:600}.example-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}.example-btn{background:var(--gray-100);border:1px solid var(--gray-300);padding:6px 16px;border-radius:30px;cursor:pointer;font-size:0.8rem;transition:all 0.2s}.example-btn:hover{background:var(--primary-color);color:white}.info-card{display:flex;gap:16px;padding:16px;background:var(--gray-50);border-radius:16px;margin-top:16px}.info-card i{font-size:24px;color:var(--primary-color)}.info-card h4{font-size:0.9rem;margin-bottom:4px}.info-card p{font-size:0.8rem;color:var(--gray-600);line-height:1.5}@media (max-width:900px){.editor-container{grid-template-columns:1fr}.mode-buttons{flex-direction:column}}