* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #eef2f7;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

/* Chat Container */
.chat-container {
  width: 360px;
  height: 520px;
  background: #ffffff;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

/* Header */
.chat-header {
  background: #4f46e5;
  color: white;
  padding: 15px;
  border-radius: 12px 12px 0 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-header span {
  font-size: 12px;
  color: #c7d2fe;
}

/* Body */
.chat-body {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  background: #f9fafb;
}

/* Messages */
.message {
  max-width: 75%;
  padding: 10px 14px;
  margin-bottom: 10px;
  border-radius: 18px;
  font-size: 14px;
  line-height: 1.4;
}

.bot {
  background: #e0e7ff;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.user {
  background: #4f46e5;
  color: white;
  align-self: flex-end;
  margin-left: auto;
  border-bottom-right-radius: 4px;
}

/* Footer */
.chat-footer {
  display: flex;
  padding: 12px;
  border-top: 1px solid #e5e7eb;
}

.chat-footer input {
  flex: 1;
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 20px;
  outline: none;
}

.chat-footer button {
  margin-left: 10px;
  padding: 10px 18px;
  background: #4f46e5;
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
}