body {
  font-family: "Hiragino Maru Gothic ProN", "Segoe UI", sans-serif;
  background: #fff0f5;
  margin: 0;
  padding-bottom: 80px;
}

#chat {
  max-width: 640px;
  margin: 2em auto;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  padding: 1.5em;
  overflow-y: auto;
  min-height: 60vh;
}

.msg {
  margin: 1em 0;
  padding: 0.8em 1em;
  border-radius: 10px;
  line-height: 1.6;
  white-space: pre-wrap;
  max-width: 80%;
  word-wrap: break-word;
}

.user {
  background-color: #d0eaff;
  align-self: flex-end;
  margin-left: auto;
  border: 2px solid #87cefa;
}

.bot {
  background-color: #ffe4e1;
  align-self: flex-start;
  margin-right: auto;
  border: 2px solid #f8a3b0;
}

#input {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1em;
  background: #fff;
  display: flex;
  gap: 0.5em;
  box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
}

textarea {
  flex: 1;
  resize: none;
  border: 2px solid #ffb6c1;
  border-radius: 10px;
  padding: 0.8em;
  font-size: 1em;
}

button {
  background-color: #ff69b4;
  color: white;
  border: none;
  padding: 0.8em 1.2em;
  font-size: 1em;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background-color: #ff1493;
}