body {
  margin: 0;
  padding: 0;
  background-color: #f4f7f9;
  font-family: "Segoe UI", sans-serif;
}

.chat-header {
  display: flex;
  align-items: center;
  padding: 10px;
  background-color: #008069;
  color: white;
}

.chat-header img.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  margin-right: 10px;
}

.chat-container {
  padding: 60px 10px 80px;
  overflow-y: auto;
  height: calc(100vh - 140px);
}

.bubble {
  max-width: 75%;
  padding: 10px 15px;
  margin: 8px 0;
  border-radius: 20px;
  word-wrap: break-word;
  white-space: pre-wrap;
  position: relative;
  font-size: 14px;
}

.bubble.sent {
  align-self: flex-end;
  background-color: #00bfa5;
  color: white;
  margin-left: auto;
}

.bubble.received {
  align-self: flex-start;
  background-color: #e5e5ea;
  color: black;
  margin-right: auto;
}

.author {
  font-weight: bold;
  font-size: 12px;
  margin-bottom: 3px;
}

.input-container {
  position: fixed;
  bottom: 0;
  width: 100%;
  background-color: white;
  padding: 8px 12px;
  display: flex;
  gap: 10px;
  box-shadow: 0 -2px 6px rgba(0,0,0,0.05);
}

.input-container input {
  flex-grow: 1;
  padding: 10px 14px;
  border-radius: 20px;
  border: 1px solid #ccc;
  font-size: 14px;
}

.input-container button {
  background-color: #34c759;
  border: none;
  padding: 10px 16px;
  border-radius: 20px;
  color: white;
  font-weight: bold;
  cursor: pointer;
}