@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

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

body {
  font-family: Poppins, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: #000;
}

#backButton {
  background: none;
  border: none;
  color: white;
  font-size: 1rem;
  cursor: pointer;
  margin-right: 10px;
}

#backButton:hover {
  text-decoration: underline;
}

.chat-app {
  display: flex;
  width: 80vw;
  height: 80vh;
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
  background-color: #ffffff;
}

.sidebar {
  width: 25%;
  border-right: 1px solid #ddd;
  display: flex;
  flex-direction: column;
  background-color: #f6f6f6;
}

.sidebar header {
  padding: 15px;
  font-size: 1.2rem;
  background-color: #1e1e1e;
  color: white;
}

.contact-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
}

.contact-list li {
  padding: 15px;
  cursor: pointer;
  border-bottom: 1px solid #ddd;
}

.contact-list li:hover {
  background-color: #f0f8ff;
}

.chat-area {
  display: flex;
  flex-direction: column;
  width: 75%;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  background-color: #1e1e1e;
  color: white;
  font-size: 1.2rem;
  flex-direction: row-reverse;
}

.messages {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.message {
  max-width: 60%;
  padding: 10px;
  border-radius: 8px;
  line-height: 1.4;
  font-size: 0.9rem;
}

.message.sent {
  align-self: flex-end;
  background-color: #d1e7ff;
}

.message.received {
  align-self: flex-start;
  background-color: #f0f0f0;
}

.chat-input {
  display: flex;
  padding: 10px;
  border-top: 1px solid #ddd;
}

.chat-input input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.chat-input button {
  margin-left: 10px;
  padding: 10px 15px;
  background-color: #1e1e1e;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

.chat-input button:hover {
  background-color: #4169e1;
}

.message img {
  max-width: 150px;
  max-height: 150px;
  border-radius: 8px;
  display: block;
}

.zoomable-image {
  cursor: pointer;
  max-width: 150px;
  max-height: 150px;
  border-radius: 8px;
}

.image-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  max-width: 90%;
  max-height: 90%;
  border-radius: 8px;
}