* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: #f9f9f9;
  font-family: Arial, Helvetica, sans-serif;
}

.chat-container {
  margin: 50px auto;
  max-width: 700px;
  background-color: #ffffff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.conn-fail {
  color: #999999;
  text-align: center;
  margin: 10px 0;
}

.chat-header {
  text-align: center;
  display: inline-flex;
  color: #2f6cbd;
}

.chat-header img {
  margin: 5px 5px 5px 15px;
}

.chat-divider {
  background-color: #3f51b5;
  color: #ffffff;
  padding: 7px 20px;
  font-size: 20px;
}

/* 전체 메세지 */
.chat-messages {
  height: 530px;
  overflow-y: auto;
  padding: 10px;
}

/* 보내는 메세지 */
.chat-message {
  margin: 10px 0;
}

.chat-message .send-message-container {
  display: inline-flex;
}

.chat-message .timestamp {
  font-size: 12px;
  color: #999999;
  margin-left: 5px;
  margin-top: 10px;
}

.chat-message .text {
  background-color: #f1f0f0;
  padding: 10px;
  border-radius: 5px;
}

/* 받은 메세지 */
.chat-message.received-message {
  text-align: right;
}

.chat-message.received-message .received-message-container {
  display: inline-flex;
}

.chat-message.received-message .timestamp {
  margin-top: 10px;
  margin-right: 5px;
}

.chat-message.received-message .text {
  background-color: #d6e8f7;
  text-align: left;
}

/* 메세지 입력 */
.chat-input {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: #ffffff;
  padding: 10px;
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
}

.chat-input-container {
  display: inline-flex;
}

.chat-input input {
  flex: 1;
  border: none;
  padding: 10px;
  border-radius: 5px;
  margin-right: 10px;
  font-size: 14px;
}

.chat-input input::placeholder {
  color: #999999;
}

.chat-input input:focus {
  outline: none;
}

.chat-input input:focus::placeholder {
  color: #ffffff;
}

.chat-input button {
  background-color: #3f51b5;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  font-size: 16px;
  cursor: pointer;
}

#loader {
  font-size: 15px;
  text-align: center;
  padding: 10px 20px;
}

.footer {
  padding-left: 10px;
}

.footer-ref {
  font-size: 12px;
}

/* KaKao Ad */
.kakao-ad-top {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 50px;
  min-width: 350px;
}

.kakao-ad-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100px;
  min-width: 350px;
}