.app{height:100vh;display:flex;flex-direction:column;overflow:hidden}.header{display:flex;align-items:center;justify-content:space-between;padding:.5rem 1rem;background:var(--bg-secondary);border-bottom:1px solid var(--border-color);flex-shrink:0}.header-left{display:flex;align-items:center;gap:.75rem}.logo{display:flex;align-items:center;gap:.5rem}.logo svg{color:var(--primary-color)}.logo h1{font-size:1.1rem;font-weight:600;color:var(--text-color)}.home-link{color:inherit;text-decoration:none}.home-link:hover h1{color:var(--primary-color)}.subtitle{color:var(--text-secondary);font-size:.75rem;padding-left:.75rem;border-left:1px solid var(--border-color)}.header-actions{display:flex;align-items:center;gap:.5rem}.theme-btn{display:flex;align-items:center;justify-content:center;gap:.25rem;height:32px;padding:0 .5rem;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);cursor:pointer;transition:all .15s}.theme-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.lang-label{font-size:.7rem;font-weight:600}.main-content{flex:1;display:flex;gap:0;overflow:hidden;min-height:0}.editor-panel{flex:1;display:flex;flex-direction:column;background:var(--bg-secondary);border-right:1px solid var(--border-color);min-width:0}.editor-panel:last-child{border-right:none}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:.4rem .75rem;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);flex-shrink:0}.panel-info{display:flex;align-items:center;gap:.5rem}.panel-title{font-size:.8rem;font-weight:500;color:var(--text-color)}.badge{font-size:.6rem;font-weight:600;padding:.15rem .4rem;border-radius:var(--radius-sm);text-transform:uppercase;letter-spacing:.03em}.badge-left{background:#6366f126;color:var(--primary-color)}.badge-right{background:#a855f726;color:#a855f7}.panel-status{display:flex;align-items:center;gap:.25rem;font-size:.7rem}.panel-status.valid{color:var(--success-color)}.panel-status.invalid{color:var(--error-color)}.panel-status.empty{color:var(--text-secondary)}.panel-actions{display:flex;align-items:center;gap:.25rem}.action-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all .15s}.action-btn:hover{background:var(--bg-secondary);color:var(--text-color)}.action-btn.success{color:var(--success-color)}.editor-container{flex:1;min-height:0}.center-toolbar{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.5rem;padding:.5rem;background:var(--bg-color);flex-shrink:0}.toolbar-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:48px;height:48px;background:var(--primary-color);border:none;border-radius:var(--radius-md);color:#fff;cursor:pointer;transition:all .15s;box-shadow:0 2px 8px #6366f14d}.toolbar-btn:hover{background:var(--primary-hover);transform:scale(1.05)}.toolbar-btn svg{width:20px;height:20px}.toolbar-btn span{font-size:.6rem;margin-top:2px}.secondary-actions{display:flex;flex-direction:column;gap:.25rem}.secondary-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all .15s}.secondary-btn:hover{border-color:var(--primary-color);color:var(--primary-color)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--modal-overlay);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .15s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-secondary);border-radius:var(--radius-lg);border:1px solid var(--border-color);width:94%;max-width:1200px;height:85vh;display:flex;flex-direction:column;animation:slideUp .2s ease;box-shadow:0 25px 60px #0006}@keyframes slideUp{0%{opacity:0;transform:translateY(30px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:.6rem 1rem;background:var(--bg-tertiary);border-bottom:1px solid var(--border-color);border-radius:var(--radius-lg) var(--radius-lg) 0 0;flex-shrink:0}.modal-title{display:flex;align-items:center;gap:.5rem;font-size:.9rem;font-weight:600}.modal-title svg{color:var(--primary-color)}.modal-stats{display:flex;align-items:center;gap:1rem}.stat{display:flex;align-items:center;gap:.3rem;font-size:.8rem;font-weight:500}.stat-identical{color:var(--success-color)}.stat-add{color:var(--add-color)}.stat-remove{color:var(--remove-color)}.modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:all .15s}.modal-close:hover{background:var(--error-color);border-color:var(--error-color);color:#fff}.modal-body{flex:1;overflow:auto;padding:0}.diff-identical{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--success-color);text-align:center}.diff-identical svg{margin-bottom:1rem;opacity:.7}.diff-identical p{font-size:1rem}.diff-lines{font-family:JetBrains Mono,Fira Code,Consolas,monospace;font-size:.8rem;line-height:1.6}.diff-line{display:flex;border-left:3px solid transparent}.diff-line-add{background:#22c55e1a;border-left-color:var(--add-color)}.diff-line-remove{background:#ef44441a;border-left-color:var(--remove-color)}.diff-line-unchanged{color:var(--text-secondary)}[data-theme=light] .diff-line-add{background:#16a34a14}[data-theme=light] .diff-line-remove{background:#dc262614}.line-number{width:3.5rem;padding:.1rem .5rem;text-align:right;color:var(--text-secondary);opacity:.5;-webkit-user-select:none;user-select:none;flex-shrink:0;font-size:.75rem}.line-sign{width:1.25rem;text-align:center;font-weight:600;flex-shrink:0}.diff-line-add .line-sign{color:var(--add-color)}.diff-line-remove .line-sign{color:var(--remove-color)}.line-content{flex:1;padding:.1rem .75rem;margin:0;white-space:pre;overflow-x:auto}.footer{padding:.35rem 1rem;background:var(--bg-secondary);border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;font-size:.7rem;color:var(--text-secondary);flex-shrink:0}.footer-left{display:flex;align-items:center;gap:1.5rem}.footer-links{display:flex;gap:1rem}.footer-links a{color:var(--text-secondary);text-decoration:none;transition:color .15s}.footer-links a:hover{color:var(--text-color)}.keyboard-shortcuts kbd{display:inline-block;padding:.1rem .3rem;font-family:inherit;font-size:.65rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:3px;margin:0 .1rem}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-tertiary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--secondary-color)}@media(max-width:768px){.main-content{flex-direction:column}.center-toolbar{flex-direction:row;padding:.5rem;order:-1;background:var(--bg-secondary);border-bottom:1px solid var(--border-color)}.secondary-actions{flex-direction:row}.editor-panel{border-right:none;border-bottom:1px solid var(--border-color)}.subtitle{display:none}.modal{width:100%;height:100%;border-radius:0;max-width:none}}