* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: #f7f7f8;
}

/* Layout */

.layout {
  display: flex;
  height: 100vh;
}

/* Sidebar */

.sidebar {
  width: 260px;
  background: #202123;
  color: white;
  padding: 20px;
  display: flex;
  flex-direction: column;
}

.logo {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 20px;
}

.newchat {
  padding: 12px;
  background: #10a37f;
  border: none;
  color: white;
  border-radius: 8px;
  font-size: 15px;
  cursor: pointer;
}

/* Main chat area */

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Chat messages */

.chat {
  flex: 1;
  overflow-y: auto;
  padding: 40px 0;
}

/* Message row */

.row {
  display: flex;
  padding: 18px 24px;
}

/* Assistant messages */

.bot-row {
  background: #ffffff;
}

.user-row {
  background: #f7f7f8;
  justify-content: flex-end;
}

/* Avatar */

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  margin-right: 14px;
}

/* Message bubble */

.msg {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.6;
  white-space: pre-wrap;
}

/* Input area */

.input-area {
  padding: 16px;
  background: white;
  border-top: 1px solid #ddd;
  display: flex;
}

input {
  flex: 1;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 16px;
}

button {
  margin-left: 10px;
  padding: 0 22px;
  background: #10a37f;
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
}