.mode-selector{display:flex;gap:12px;margin-bottom:24px;flex-wrap:wrap}.mode-btn{background:var(--gray-100);border:1px solid var(--gray-200);padding:10px 24px;border-radius:40px;cursor:pointer;transition:all 0.3s;font-weight:500;display:flex;align-items:center;gap:8px}.mode-btn i{font-size:1rem}.mode-btn.active{background:var(--primary-color);border-color:var(--primary-color);color:white;box-shadow:0 4px 12px rgba(59,130,246,0.3)}.mode-options{background:var(--gray-50);border-radius:16px;padding:20px;margin-bottom:24px;display:flex;flex-wrap:wrap;gap:24px;align-items:center}.option-group{display:flex;align-items:center;gap:8px}.option-group label{font-weight:500;color:var(--gray-700);font-size:0.85rem}.input-sm{width:80px;padding:8px 12px;border:1px solid var(--gray-300);border-radius:10px;text-align:center}.input-md{width:200px;padding:8px 12px;border:1px solid var(--gray-300);border-radius:10px}.select-sm{padding:8px 12px;border:1px solid var(--gray-300);border-radius:10px;background:white}.unit{color:var(--gray-500);font-size:0.8rem}.example-text{color:var(--gray-400);font-size:0.75rem}.preview-badge{background:var(--primary-color);color:white;padding:6px 14px;border-radius:30px;font-size:0.75rem}.regex-presets{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.preset-label{font-size:0.75rem;color:var(--gray-500)}.preset-btn{background:var(--gray-200);border:none;padding:4px 12px;border-radius:20px;font-size:0.7rem;cursor:pointer;transition:all 0.2s}.preset-btn:hover{background:var(--primary-color);color:white}.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);flex-wrap:wrap;gap:12px}.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;align-items:center}.action-btn{background:transparent;border:none;padding:6px 12px;border-radius:30px;cursor:pointer;transition:all 0.2s;color:var(--gray-600);display:inline-flex;align-items:center;gap:6px}.action-btn:hover{background:var(--gray-200);color:var(--primary-color)}.input-textarea,.output-textarea{width:100%;min-height:350px;padding:20px;font-family:'Fira Code',monospace;font-size:13px;line-height:1.6;border:none;resize:vertical;background:#1a1a2e;color:#e0e0e0}.input-textarea:focus{outline:none}.output-wrapper{min-height:350px;max-height:500px;overflow:auto;background:#1a1a2e}.output-textarea{margin:0;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)}.preview-section{margin-bottom:24px;border:1px solid var(--gray-200);border-radius:16px;overflow:hidden}.preview-header{padding:12px 20px;background:var(--gray-50);border-bottom:1px solid var(--gray-200);display:flex;justify-content:space-between;align-items:center;font-weight:500;font-size:0.85rem}.preview-mode{color:var(--primary-color);font-size:0.75rem}.preview-content{padding:16px;background:#f8fafc;font-family:monospace;font-size:12px;line-height:1.5;max-height:200px;overflow-y:auto;white-space:pre-wrap}.info-grid{display:grid;grid-template-columns:repeat(2, 1fr);gap:12px;padding:16px}.info-item{display:flex;align-items:center;gap:8px;font-size:0.8rem;color:var(--gray-600);padding:8px;background:var(--gray-50);border-radius:12px}.info-item i{color:var(--primary-color);width:24px}@media (max-width:900px){.editor-container{grid-template-columns:1fr}.mode-options{flex-direction:column;align-items:flex-start}.info-grid{grid-template-columns:1fr}}