/* General Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Body Styling */
body {
  font-family: Arial, sans-serif;
  background-color: #1a1a1a;
  color: #e6e6e6;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Header Navigation */
header {
  background-color: #0f0f0f;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

header .logo {
  color: #fff;
  font-size: 1.5em;
  font-weight: bold;
}

header nav a {
  color: #aaa;
  text-decoration: none;
  margin-left: 15px;
  font-size: 1em;
  transition: color 0.3s;
}

header nav a:hover {
  color: #fff;
}

/* Main Layout */
main {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 250px;
  background-color: #121212;
  padding: 20px;
  overflow-y: auto;
  border-right: 1px solid #333;
}

.sidebar h2 {
  color: #f05a28;
  font-size: 1.2em;
  margin-bottom: 20px;
}

.sidebar ul {
  list-style: none;
}

.sidebar ul li {
  margin-bottom: 15px;
}

.sidebar ul li a {
  color: #ccc;
  text-decoration: none;
  font-size: 1em;
  transition: color 0.3s;
}

.sidebar ul li a:hover {
  color: #fff;
}

/* Chat Area */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: #1a1a1a;
}

.chat-header {
  padding: 10px 20px;
  background-color: #0f0f0f;
  border-bottom: 1px solid #333;
}

.chat-header h2 {
  font-size: 1.2em;
  color: #fff;
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  background: #1a1a1a;
}

.chat-messages .message {
  margin-bottom: 15px;
}

.chat-messages .message .author {
  font-weight: bold;
  color: #f05a28;
}

.chat-messages .message .content {
  margin-left: 10px;
  color: #e6e6e6;
}

/* Input Area */
.chat-input {
  padding: 15px;
  background-color: #121212;
  display: flex;
  align-items: center;
  border-top: 1px solid #333;
}

.chat-input textarea {
  flex: 1;
  background-color: #1a1a1a;
  color: #fff;
  border: none;
  padding: 10px;
  border-radius: 5px;
  resize: none;
}

.chat-input button {
  background-color: #f05a28;
  color: white;
  border: none;
  padding: 10px 15px;
  margin-left: 10px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1em;
  transition: background-color 0.3s;
}

.chat-input button:hover {
  background-color: #e04924;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .chat-area {
    flex: 1;
  }
}