:root {
  --main-colour: #000;
  /* Adjusted to black for the header text contrast */
  --secondary-colour: #f8f9fa;
  /* Background color similar to webpage */
  --accent-colour: #f6f7f8;
  /* Red accent, matching the puzzle piece image */
  --chat-message-bg: #ffffff;
  /* Keeps message background clean */
  --text-colour: #212529;
  /* Dark gray for high readability */
  --font-family: 'Arial', sans-serif;
  /* Professional, modern font */
}

body {
  font-family: var(--font-family);
  margin: 0;
  padding: 0;
  background-color: var(--secondary-colour);
  color: var(--text-colour);
}

.chat-container {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  margin: 0 auto;
  border: none;
  border-radius: 0;
  box-shadow: none;
  /* Removed heavy shadow for cleaner look */
  overflow: hidden;
  background-color: var(--secondary-colour);
}

.chat-title {
  background-color: #fff;
  color: #000;
  padding: 10px;
  /* Increase padding for a modern look */
  font-size: 24px;
  text-align: center;
  border-bottom: 1px solid #ccc;
  /* Subtle bottom border */
}

img.logo-white {
  filter: brightness(0) invert(1);
}

.chat-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  /* Matches larger padding theme */
}

.welcome-message {
  flex-direction: column;
  height: 80%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.welcome-message-paragraph {
  margin: 10px;
}

.user-message,
.chatbot-message {
  padding: 10px;
  max-width: 90%;
  font-size: 16px;
}

.user-message {
  background-color: var(--accent-colour);
  color: #000;
  border-radius: 20px 20px 0 20px;
  /* Softer, modern rounded edges */
}

.chatbot-message {
  background-color: var(--chat-message-bg);
  color: var(--main-colour);
  border-radius: 20px 20px 20px 0;
}

.chat-input {
  display: flex;
  align-items: center;
  padding: 15px;
  background-color: var(--secondary-colour);
  border-top: 1px solid #ddd;
}

.chat-footer {
  display: flex;
  align-items: center;
  padding: 10px;
  background-color: #000;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
}


#user-input {
  flex: 1;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
}

#send-button {
  background-color: #c82333;
  color: #fff;
  padding: 12px 24px;
  margin-left: 12px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
}

#send-button:hover {
  background-color: #c82333;
  /* Slightly darker hover effect */
}

.typing-indicator {
  background-color: var(--accent-colour);
  color: #000;
  border-radius: 8px;
  padding: 10px;
  margin: 5px;
  max-width: 80%;
}


.sample-message {
  border: 1px solid #ccc;
  color: var(--accent-colour);
  border-radius: 20px;
  padding: 15px;
  margin: 5px;
  width: 20%;
  height: 40px;
  text-align: center;
  color: #000;
}

.sample-message:hover {
  background-color: #c82333;
  color: #fff;
}

.sample-messages {
  display: flex;
  flex-wrap: wrap;
  /* Better for responsiveness */
  justify-content: center;
  margin-bottom: 40px;
}

.calendar {
  display: table;
  border-collapse: collapse;
  margin: 20px auto;
}

.day {
  width: 100px;
  height: 100px;
  border: 1px solid #ccc;
  position: relative;
}

.day-header {
  background-color: #f0f0f0;
  text-align: center;
  padding: 5px;
  border-bottom: 1px solid #ccc;
}

.event {
  position: absolute;
  bottom: 5px;
  left: 5px;
  right: 5px;
  background-color: #6c757d;
  color: white;
  padding: 5px;
  border-radius: 3px;
  font-size: 12px;
}

.language-selector {
  width: 200px;
  margin: 20px auto;
}

select {
  width: 100%;
  padding: 10px;
  font-size: 16px;
  border: 1px solid #ccc;
  border-radius: 5px;
  background-color: #f9f9f9;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
}

select:hover {
  border-color: #4CAF50;
}

select:focus {
  outline: none;
  border-color: #4CAF50;
  box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
}

@media (max-width: 768px) {
  .sample-message {
    width: 90%;
    height: 40px;
  }

  .chat-container {
    max-width: 100%;
    height: 100vh;
    border-radius: 0;
  }

  .chat-title {
    font-size: 20px;
  }

  .chat-input {
    padding: 10px;
  }


  #user-input {
    font-size: 14px;
  }

  #send-button {
    padding: 10px 18px;
    font-size: 14px;
  }

  .language-selector {
    width: 100%;
    padding: 0 10px;
  }

  select {
    font-size: 18px;
    padding: 12px;
  }
}