:root{--primary-color:#4f46e5;--primary-hover:#4338ca;--bg-color:#f3f4f6;--panel-bg:#fff;--text-primary:#1e293b;--text-secondary:#64748b;--border-color:#e2e8f0;--resizer-color:#cbd5e1;--resizer-hover:#3b82f6;--success-bg:#dcfce7;--success-text:#166534;--error-bg:#fee2e2;--error-text:#991b1b;--font-sans:"Inter",system-ui,-apple-system,sans-serif;--font-mono:"JetBrains Mono","Courier New",monospace;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a;--radius-md:.5rem;--radius-lg:.75rem}body{font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-primary);height:100vh;margin:0;padding:0;overflow:hidden}.container{flex-direction:column;max-width:100%;height:100vh;margin:0;padding:0;display:flex}.header{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);z-index:20;background-color:#fffc;flex-shrink:0;align-items:center;gap:1.5rem;padding:1rem 1.5rem;display:flex}.highlight-mirror{pointer-events:none;white-space:pre-wrap;word-wrap:break-word;z-index:-9999;opacity:0}.highlight-overlay{transition:background-color .2s}h1{color:var(--text-primary);letter-spacing:-.025em;margin:0;font-size:1.25rem;font-weight:600}.controls{flex:1}.primary-btn{background-color:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:9999px;padding:.5rem 1.25rem;font-size:.875rem;font-weight:500;transition:all .2s;box-shadow:0 2px 4px #4f46e533}.primary-btn:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 6px #4f46e54d}.primary-btn:active{transform:translateY(0)}.error-msg{background-color:var(--error-bg);color:var(--error-text);border-radius:var(--radius-md);margin:0;padding:.5rem 1rem;font-size:.875rem;animation:.3s slideIn}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.main-layout{box-sizing:border-box;flex:1;gap:0;width:100%;padding:1rem;display:flex;overflow:hidden}.resizer{cursor:col-resize;z-index:10;background-color:#0000;flex:0 0 12px;justify-content:center;align-items:center;width:12px;margin:0 -5px;display:flex;position:relative}.resizer:after{content:"";background-color:var(--resizer-color);border-radius:2px;width:2px;height:40px;transition:all .2s}.resizer:hover:after,.resizer.active:after{background-color:var(--resizer-hover);width:2px;height:100%}.panel{box-sizing:border-box;background-color:var(--panel-bg);border-radius:var(--radius-lg);min-width:150px;box-shadow:var(--shadow-md);border:1px solid var(--border-color);flex-direction:column;flex:1 1 0;padding:0;transition:box-shadow .2s;display:flex;overflow:hidden}.panel:hover{box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a}.panel-header{border-bottom:1px solid var(--border-color);background-color:#fafafa;justify-content:space-between;align-items:center;padding:.75rem 1rem;display:flex}.panel-header h3{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;margin:0;font-size:.875rem;font-weight:600}.editor-container{background-color:#fff;flex:1;display:flex;position:relative;overflow:hidden}.line-numbers{color:#94a3b8;text-align:right;width:45px;font-family:var(--font-mono);border-right:1px solid var(--border-color);-webkit-user-select:none;user-select:none;box-sizing:border-box;background-color:#f8fafc;padding:1rem .5rem;font-size:13px;line-height:1.6}textarea{resize:none;height:100%;font-family:var(--font-mono);box-sizing:border-box;color:var(--text-primary);background:0 0;border:none;outline:none;flex:1;padding:1rem;font-size:13px;line-height:1.6}textarea::placeholder{color:#cbd5e1}.diff-viewer{height:100%;font-family:var(--font-mono);white-space:pre-wrap;word-break:break-all;background:#fff;flex:1;padding:1rem;font-size:13px;line-height:1.6;overflow:auto}.icon-btn{cursor:pointer;border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);background-color:#fff;padding:.25rem .75rem;font-size:.75rem;font-weight:500;transition:all .2s}.icon-btn:hover{color:var(--text-primary);background-color:#f1f5f9;border-color:#cbd5e1}.diff-line{border-radius:2px;padding:0 4px}.children{border-left:1px solid #f1f5f9;margin-left:1.5rem;padding-left:.5rem}.key-name{color:var(--text-primary);font-weight:600}.clickable-key{cursor:pointer;border-radius:4px;padding:0 2px;transition:all .2s}.clickable-key:hover{background-color:var(--primary-color);color:#fff}.icon{text-align:center;opacity:.7;width:1.5rem;font-weight:700;display:inline-block}.added{background-color:var(--success-bg);color:var(--success-text)}.added .icon{color:#15803d}.removed{background-color:var(--error-bg);color:var(--error-text);text-decoration:none}.removed .icon{color:#b91c1c}.modified{color:var(--text-primary);background-color:#0000}.diff-char-del{color:#991b1b;background-color:#fecaca;border-radius:2px;padding:0 1px}.diff-char-add{color:#166534;background-color:#bbf7d0;border-radius:2px;padding:0 1px}.icon-spacer{width:1.5rem;display:inline-block}.unchanged{color:#94a3b8}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}