body {
  margin: 0;
  padding: 0;
  direction: rtl;
  font-family: sans-serif;
  background: #0b1724;
  color: #f5f5f5;
}

.chat-wrapper {
  max-width: 900px;
  margin: 20px auto;
  background: #111827;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  height: 90vh;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}

.chat-header {
  padding: 16px 20px;
  border-bottom: 1px solid #1f2933;
}

.chat-header h1 {
  margin: 0 0 6px 0;
  font-size: 20px;
}

.chat-header p {
  margin: 0;
  font-size: 13px;
  color: #9ca3af;
}

.chat-window {
  flex: 1;
  padding: 16px 20px;
  overflow-y: auto;
}

.message {
  margin-bottom: 12px;
  max-width: 80%;
  padding: 8px 12px;
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.6;
}

.message.user {
  background: #2563eb;
  margin-left: auto;
  border-bottom-right-radius: 2px;
}

.message.bot {
  background: #1f2937;
  margin-right: auto;
  border-bottom-left-radius: 2px;
}

.chat-input {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid #1f2937;
}

.chat-input input {
  flex: 1;
  padding: 8px;
  border-radius: 8px;
  border: none;
  outline: none;
  font-size: 14px;
}

.chat-input button {
  padding: 8px 16px;
  border-radius: 8px;
  border: none;
  background: #10b981;
  color: #fff;
  cursor: pointer;
  font-size: 14px;
}