.html-decoder-container{--primary-color:#4a90e2;--primary-hover:#3a7bc8;--text-color:#333;--background-color:#f9f9f9;--card-background:#ffffff;--border-color:#e0e0e0;--success-color:#4caf50;--error-color:#f44336;--code-background:#f1f1f1;min-height:100vh;display:flex;flex-direction:column;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;color:var(--text-color);background-color:var(--background-color)}.html-decoder-container.dark-mode{--primary-color:#64b5f6;--primary-hover:#82c4f8;--text-color:#e0e0e0;--background-color:#121212;--card-background:#1e1e1e;--border-color:#333;--code-background:#2d2d2d}.html-decoder-container *{box-sizing:border-box;transition:background-color .3s,color .3s}.html-decoder-container header{padding:1.5rem;background-color:var(--primary-color);color:#fff;text-align:center;position:relative;box-shadow:0 2px 4px rgba(0,0,0,.1)}.html-decoder-container header h1{margin:0;font-size:2rem}@media(max-width:480px){.html-decoder-container header h1{font-size:1.5rem}}.html-decoder-container header .theme-toggle{position:absolute;right:1.5rem;top:50%;transform:translateY(-50%);background:rgba(0,0,0,0);border:none;font-size:1.5rem;cursor:pointer;padding:.5rem;border-radius:50%}.html-decoder-container header .theme-toggle:hover{background-color:hsla(0,0%,100%,.2)}.html-decoder-container header .theme-toggle:focus{outline:2px solid #fff;outline-offset:2px}.html-decoder-container main{flex:1;padding:1.5rem;max-width:1200px;margin:0 auto;width:100%}.html-decoder-container .decoder-section{display:flex;gap:1.5rem;margin-bottom:2rem}@media(max-width:768px){.html-decoder-container .decoder-section{flex-direction:column}}.html-decoder-container .input-container,.html-decoder-container .output-container{flex:1;display:flex;flex-direction:column;background-color:var(--card-background);border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.1);padding:1rem}@media(max-width:768px){.html-decoder-container .input-container,.html-decoder-container .output-container{width:100%}}.html-decoder-container .textarea-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.html-decoder-container .textarea-header label{font-weight:700;color:var(--primary-color)}.html-decoder-container .textarea-header .button-group{display:flex;gap:.5rem}.html-decoder-container textarea{flex:1;min-height:300px;padding:1rem;border:1px solid var(--border-color);border-radius:4px;font-family:Courier New,Courier,monospace;resize:vertical;background-color:var(--card-background);color:var(--text-color)}.html-decoder-container textarea:focus{outline:2px solid var(--primary-color);border-color:var(--primary-color)}.html-decoder-container textarea::placeholder{color:#888}@media(max-width:480px){.html-decoder-container textarea{min-height:200px}}.html-decoder-container button{padding:.5rem 1rem;background-color:var(--primary-color);color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:.9rem;display:flex;align-items:center;gap:.3rem}.html-decoder-container button:hover{background-color:var(--primary-hover)}.html-decoder-container button:focus{outline:2px solid var(--primary-color);outline-offset:2px}.html-decoder-container button:disabled{background-color:#ccc;cursor:not-allowed}.html-decoder-container button.success{background-color:var(--success-color)}.html-decoder-container .error-message{background-color:rgba(244,67,54,.1);color:var(--error-color);padding:1rem;border-radius:4px;margin-bottom:1.5rem;border-left:4px solid var(--error-color)}.html-decoder-container .info-section{background-color:var(--card-background);border-radius:8px;padding:1.5rem;margin-top:2rem;box-shadow:0 2px 8px rgba(0,0,0,.1)}.html-decoder-container .info-section h2{color:var(--primary-color);margin-top:0}.html-decoder-container .info-section h3{margin-top:1.5rem;margin-bottom:1rem}.html-decoder-container .info-section code{background-color:var(--code-background);padding:.2rem .4rem;border-radius:3px;font-family:Courier New,Courier,monospace}.html-decoder-container .entities-table{overflow-x:auto}.html-decoder-container .entities-table table{width:100%;border-collapse:collapse;margin:1rem 0}.html-decoder-container .entities-table table td,.html-decoder-container .entities-table table th{padding:.75rem;text-align:left;border-bottom:1px solid var(--border-color)}.html-decoder-container .entities-table table th{background-color:rgba(74,144,226,.1);color:var(--primary-color);font-weight:700}.html-decoder-container .entities-table table tr:hover{background-color:rgba(0,0,0,.02)}@media(max-width:480px){.html-decoder-container .entities-table table td,.html-decoder-container .entities-table table th{padding:.5rem}}.html-decoder-container footer{text-align:center;padding:1.5rem;background-color:var(--card-background);border-top:1px solid var(--border-color);color:#666;font-size:.9rem}.html-decoder-container footer p{margin:0}