:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #646cff;--primary-hover: #535bf2;--bg-color: #0f172a;--card-bg: #1e293b;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--border-color: #334155;--diff-add-bg: #166534;--diff-add-text: #4ade80;--diff-delete-bg: #991b1b;--diff-delete-text: #fca5a5;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--transition: all .3s cubic-bezier(.4, 0, .2, 1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:var(--bg-color);color:var(--text-primary);line-height:1.6}.app{min-height:100vh;padding:1rem;width:100%;max-width:1400px;margin:0 auto}h1{text-align:center;color:var(--text-primary);margin-bottom:3rem;font-size:2.5rem;font-weight:700;letter-spacing:-.025em;background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}h2{color:var(--text-primary);margin-bottom:1rem;font-size:1.5rem;font-weight:600}h3{color:var(--text-secondary);margin-bottom:.75rem;font-size:1.125rem;font-weight:500}.input-container{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:2.5rem}.input-section{background:var(--card-bg);padding:1.5rem;border-radius:12px;border:1px solid var(--border-color);box-shadow:var(--shadow-lg);transition:var(--transition)}.input-section:hover{box-shadow:0 20px 25px -5px #0003,0 8px 10px -6px #0003;border-color:var(--primary-color)}.text-input{width:100%;min-height:300px;padding:1rem;background:var(--bg-color);color:var(--text-primary);border:2px solid var(--border-color);border-radius:8px;font-size:1rem;font-family:inherit;resize:vertical;outline:none;transition:var(--transition);line-height:1.6}.text-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #646cff1a;transform:translateY(-1px)}.text-input::placeholder{color:var(--text-secondary);opacity:.7}.result-container{background:var(--card-bg);padding:2rem;border-radius:12px;border:1px solid var(--border-color);box-shadow:var(--shadow-lg)}.result-section{margin-bottom:2rem;padding:1.5rem;background:var(--bg-color);border-radius:8px;border:1px solid var(--border-color)}.diff-display{display:block;padding:1.5rem;background:var(--bg-color);border-radius:8px;font-size:1.25rem;line-height:2;white-space:pre-wrap;word-break:break-all;min-height:100px;border:1px solid var(--border-color);overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--primary-color) var(--bg-color)}.diff-display::-webkit-scrollbar{height:8px}.diff-display::-webkit-scrollbar-track{background:var(--bg-color);border-radius:4px}.diff-display::-webkit-scrollbar-thumb{background:var(--primary-color);border-radius:4px}.diff-display::-webkit-scrollbar-thumb:hover{background:var(--primary-hover)}.diff-char{padding:.25rem .15rem;margin:0 .05rem;border-radius:4px;transition:var(--transition);position:relative}.diff-char:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.diff-equal{background:transparent}.diff-delete{background:var(--diff-delete-bg);color:var(--diff-delete-text);text-decoration:line-through;font-weight:600;border:1px solid transparent}.diff-add{background:var(--diff-add-bg);color:var(--diff-add-text);font-weight:600;border:1px solid transparent}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.input-section,.result-section,.diff-display{animation:fadeIn .5s ease-out forwards}.input-section:nth-child(1){animation-delay:.1s}.input-section:nth-child(2){animation-delay:.2s}.result-section:nth-child(1){animation-delay:.3s}.result-section:nth-child(2){animation-delay:.4s}@media(max-width:768px){.app{padding:1rem}h1{font-size:2rem;margin-bottom:2rem}.input-container{grid-template-columns:1fr;gap:1.5rem}.input-section,.result-container,.result-section{padding:1rem}.diff-display{font-size:1rem;padding:1rem}}@media(max-width:480px){.app{padding:.75rem}h1{font-size:1.75rem}h2{font-size:1.25rem}.text-input{min-height:150px;font-size:.9rem}.diff-display{font-size:.95rem;line-height:1.8}}