*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;font-family:inherit}html{font-size:16px;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}body{line-height:1.6;background-color:#f4f4f4;color:#333;font-family:'Segoe UI',Arial,sans-serif}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}button{cursor:pointer;border:none;background:none}a{text-decoration:none;color:inherit}.container{max-width:900px;margin:40px auto;padding:20px;background-color:#ffffff;border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,0.05)}h1{font-size:1.8rem;text-align:center;color:#222;margin-bottom:1rem}.file-type-select{display:flex;justify-content:space-between;margin-bottom:1rem}.file-type-select label{flex:1;text-align:center;background-color:#eef2f5;padding:0.6rem 0;border-radius:4px;transition:background 0.3s,color 0.3s;cursor:pointer;user-select:none}.file-type-select input[type="radio"]{display:none}.file-type-select input[type="radio"]:checked + label{background-color:#4caf50;color:#fff}textarea{width:100%;min-height:200px;padding:0.8rem;border:1px solid #ccc;border-radius:4px;resize:vertical;transition:border-color 0.3s}textarea:focus{border-color:#4caf50;outline:none}.btn{display:inline-block;padding:0.7rem 1.5rem;margin-top:1rem;background-color:#4caf50;color:#fff;font-weight:500;border-radius:4px;transition:background-color 0.3s,transform 0.1s}.btn:hover{background-color:#45a049}.btn:active{transform:scale(0.98)}.btn.reset{background-color:#f44336;margin-left:0.5rem}.btn.reset:hover{background-color:#e53935}.char-count{margin-top:0.5rem;font-size:0.9rem;color:#555}#result{display:none;margin-top:2rem;padding:1rem;background-color:#fafafa;border:1px solid #e0e0e0;border-radius:4px}#result h3{margin-bottom:0.5rem;font-size:1.1rem;color:#333}pre{background-color:#272822;color:#f8f8f2;padding:1rem;border-radius:4px;overflow-x:auto;max-height:300px;font-size:0.9rem;line-height:1.4}.button-group{display:flex;justify-content:flex-start;margin-top:0.8rem}@media (max-width:600px){.file-type-select{flex-direction:column;gap:0.5rem}.file-type-select label{width:100%}.button-group{flex-direction:column}.btn{width:100%;text-align:center}.btn.reset{margin-left:0;margin-top:0.5rem}}   header{align-items: center; background-color:white;font-weight:500;transition:color 0.2s;padding:15px 20px}footer{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:2rem;padding:2rem;background-color:#f8f8f8;color:#666666;font-size:0.875rem} 

a{font-size: 25px;}