html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: transparent;
  font-family: 'Segoe UI', sans-serif;
}

.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 100%;
  background: white;
  box-shadow: none;
  border-radius: 0;
  overflow: hidden;
}

.chat-header {
  background: #2e7d32;
  color: white;
  padding: 12px;
  font-weight: bold;
  text-align: center;
  border-top-left-radius: 8px;
  border-top-right-radius: 8px;
}

.chat-box {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: transparent;
}

.bot, .user {
  padding: 8px 12px;
  border-radius: 10px;
  max-width: 80%;
  word-wrap: break-word;
}

.bot {
  background: #e0f2f1;
  align-self: flex-start;
}

.user {
  background: #bbdefb;
  align-self: flex-end;
}

.chat-form {
  display: flex;
  border-top: none;
  background: transparent;
  padding: 10px;
}

#user-input {
  flex: 1;
  padding: 10px;
  border: none;
  font-size: 14px;
  outline: none;
  background: rgba(255,255,255,0.8);
  border-radius: 6px;
}

.chat-form button {
  padding: 0 20px;
  background: #2e7d32;
  color: white;
  border: none;
  cursor: pointer;
  font-weight: bold;
  border-radius: 6px;
}