body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background-color: #0d0d0d;
  color: #e0e0e0;
}

/* Top Bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #1a1a1a;
  padding: 12px 20px;
  border-bottom: 1px solid #333;
}

.title {
  font-size: 20px;
  font-weight: bold;
  color: #bb86fc;
}

#loginBtn {
  background: #bb86fc;
  color: #121212;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
}

/* Layout */
.main-layout {
  display: flex;
  height: calc(100vh - 60px);
}

/* Sidebar */
.sidebar {
  width: 240px;
  background: #1e1e1e;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  border-right: 1px solid #333;
}

.new-chat {
  background: #bb86fc;
  color: #121212;
  border: none;
  padding: 10px;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  margin-bottom: 20px;
}

.chat-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.chat-list li {
  padding: 10px;
  border-radius: 6px;
  margin-bottom: 8px;
  background: #2c2c2c;
  cursor: pointer;
}

.chat-list li:hover {
  background: #3a3a3a;
}

/* Welcome Box */
.welcome-box {
  background: #2c2c2c;
  padding: 12px;
  border-radius: 8px;
  text-align: center;
  font-weight: bold;
  color: #bb86fc;
}

/* Chat Area */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.chat-window {
  flex: 1;
  background: #121212;
  border-radius: 8px;
  padding: 15px;
  overflow-y: auto;
}

.input-area {
  display: flex;
  margin-top: 12px;
}

#input {
  flex: 1;
  padding: 12px;
  border: none;
  border-radius: 6px;
  background-color: #2c2c2c;
  color: #e0e0e0;
}

#sendBtn {
  background-color: #bb86fc;
  border: none;
  padding: 0 20px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
}