.html-tool-container{max-width:1200px;margin:0 auto;padding:2rem;font-family:Arial,sans-serif;background-color:#f9fafb;min-height:100vh}.html-tool-container h1{font-size:2.5rem;color:#1f2937;text-align:center;margin-bottom:1rem}.html-tool-container p{text-align:center;color:#6b7280;margin-bottom:2rem}.html-tool-container .mode-toggle{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem}.html-tool-container .mode-toggle button{padding:.75rem 1.5rem;font-size:1rem;border:1px solid #d1d5db;background-color:#fff;cursor:pointer;border-radius:.375rem;transition:all .2s ease}.html-tool-container .mode-toggle button.active{background-color:#2563eb;color:#fff;border-color:#2563eb}.html-tool-container .mode-toggle button:hover{background-color:#e5e7eb}.html-tool-container .input-output-container{display:grid;grid-template-columns:1fr;gap:2rem;margin-bottom:2rem}@media(min-width:768px){.html-tool-container .input-output-container{grid-template-columns:1fr 1fr}}.html-tool-container .input-output-container .textarea-container{display:flex;flex-direction:column}.html-tool-container .input-output-container .textarea-container label{font-size:1.1rem;color:#1f2937;margin-bottom:.5rem}.html-tool-container .input-output-container .textarea-container textarea{width:100%;min-height:200px;padding:1rem;font-size:1rem;border:1px solid #d1d5db;border-radius:.375rem;resize:vertical;background-color:#fff;transition:border-color .2s ease}.html-tool-container .input-output-container .textarea-container textarea:focus{outline:none;border-color:#2563eb}.html-tool-container .input-output-container .textarea-container textarea[readonly]{background-color:#f3f4f6;cursor:default}.html-tool-container .action-buttons{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.html-tool-container .action-buttons button{padding:.75rem 1.5rem;font-size:1rem;border:none;border-radius:.375rem;cursor:pointer;transition:background-color .2s ease}.html-tool-container .action-buttons button:first-child{background-color:#2563eb;color:#fff}.html-tool-container .action-buttons button:first-child:hover{background-color:#1d4ed8}.html-tool-container .action-buttons button:nth-child(2){background-color:#10b981;color:#fff}.html-tool-container .action-buttons button:nth-child(2):hover{background-color:#059669}.html-tool-container .action-buttons button:nth-child(2):disabled{background-color:#d1d5db;cursor:not-allowed}.html-tool-container .action-buttons button:last-child{background-color:#ef4444;color:#fff}.html-tool-container .action-buttons button:last-child:hover{background-color:#dc2626}@media(max-width:600px){.html-tool-container{padding:1rem}.html-tool-container h1{font-size:1.8rem}.html-tool-container .action-buttons button,.html-tool-container .mode-toggle button{padding:.5rem 1rem;font-size:.9rem}}