style.css

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #000000;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  transition: background-color 3s ease;
}

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.container {
  background: #fff;
  padding: 30px 50px;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  text-align: center;
  max-width: 800px;
  width: 100%;
  overflow: hidden;
}

textarea {
  width: 100%;
  height: 150px;
  margin-bottom: 20px;
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 4px;
  max-width: 100%;
  max-height: calc(100vh - 200px);
  box-sizing: border-box;
}

button {
  display: block;
  width: 100%;
  padding: 10px;
  font-size: 16px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  margin-bottom: 10px;
  box-sizing: border-box;
}

button:hover {
  background-color: #0056b3;
}

#html-output {
  text-align: left;
  margin-top: 20px;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #f9f9f9;
}

.hljs {
  display: block;
  overflow-x: auto;
  padding: 0.5em;
  background: #2b2b2b;
  color: #f8f8f2;
}

.hljs-comment,
.hljs-quote {
  color: #75715e;
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-subst {
  color: #f92672;
}

.hljs-literal,
.hljs-number,
.hljs-tag .hljs-attr {
  color: #ae81ff;
}

.hljs-string,
.hljs-doctag,
.hljs-regexp,
.hljs-title,
.hljs-section,
.hljs-built_in,
.hljs-bullet,
.hljs-code,
.hljs-addition {
  color: #a6e22e;
}

.hljs-attribute,
.hljs-name,
.hljs-selector-id,
.hljs-selector-class {
  color: #66d9ef;
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: bold;
}