:root {

    --main-color: #942efd;
    --main-hover: #7a22d9;
    --text-light: #ffffff;
    --main-shadow: rgba(148, 46, 253, 0.3);
    --border-radius: 8px;
  
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;

    --bg-light: var(--gray-100);
    --bg-dark: var(--gray-900);
    --text-color: var(--gray-800);
    --text-light: #ffffff;
  }
  .chat-message-bot p {
  margin-bottom: 0.5rem;
}

.chat-message-bot code {
  background: var(--gray-200);
  padding: 2px 4px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.85em;
}

.chat-message-bot pre {
  background: var(--gray-200);
  padding: 8px;
  border-radius: 6px;
  overflow-x: auto;
}
  #chatbox {
    border-radius: 1rem;
    overflow: hidden;
    background-color: var(--gray-100);
    border: 1px solid var(--gray-300);
  }

  #chatbox .card-header {
    background-color: var(--gray-900);
    color: var(--text-light);
    font-weight: 500;
  }

  #chatbox .card-body {
    background-color: var(--gray-100);
    font-size: 0.9rem;
    color: var(--gray-800);
  }

  #chatbox .card-footer {
    background-color: var(--gray-200);
  }

  .chat-message-user,
.chat-message-bot {
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 8px;
  width: 100%;
  word-wrap: break-word;
  white-space: pre-wrap;
  text-align: left;
}

.chat-message-user {
  background-color: var(--gray-200);
  color: var(--gray-800);
}

.chat-message-bot {
  background-color: var(--gray-300);
  color: var(--gray-900);
}

  #chatbot-toggle {
    background-color: var(--main-color);
    color: var(--text-light);
    border: none;
    position: relative;
    z-index: 1;
    overflow: hidden;
  }

  #chatbot-toggle:hover {
    background-color: var(--main-hover);
  }

  #chatbot-placeholder {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.85rem;
    padding-top: 30px;
  }
  #chatbot-input {
  height: 38px;  /* hoặc 40px nếu bạn muốn cao hơn nữa */
  font-size: 0.95rem;
  padding: 8px 12px;
  outline: none!important;
}

#chatbot-send {
  height: 38px;
  font-size: 0.95rem;
  padding: 0 14px;
}
  #chatbot-placeholder i {
    font-size: 36px;
    color: var(--gray-400);
    display: block;
    margin-bottom: 8px;
  }
  .chat-message-bot h1,
.chat-message-bot h2,
.chat-message-bot h3,
.chat-message-bot h4,
.chat-message-bot h5,
.chat-message-bot h6 {
  font-size: 16px;
  margin: 0.5rem 0;
  font-weight: 500;
}

.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border-radius: 10px;
  background-color: var(--gray-300);
  width: fit-content;
  margin-bottom: 6px;
}

.typing-indicator .dot {
  width: 8px;
  height: 8px;
  background-color: var(--gray-600);
  border-radius: 50%;
  animation: blink 1.4s infinite both;
}

.typing-indicator .dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator .dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes blink {
  0%, 80%, 100% {
    opacity: 0;
  }
  40% {
    opacity: 1;
  }
}
.btn-clear-history {
  padding: 2px 6px;
  font-size: 0.8rem;
  border-radius: 6px;
}

.btn-clear-history:hover {
  background-color: var(--gray-700);
  border-color: var(--gray-600);
}
.btn-icon-light {
  background: none;
  border: none;
  color: var(--gray-100);
  font-size: 1.1rem;
  padding: 2px 6px;
  line-height: 1;
  transition: color 0.2s ease;
}

.btn-icon-light:hover {
  color: #ffffff;
  cursor: pointer;
}
#chatbot-toggle::before {
  content: '';
  pointer-events: none;
  opacity: 0.5;
  background:
    radial-gradient(circle at 20% 35%, transparent 0, transparent 2px, var(--text-light) 3px, var(--text-light) 4px, transparent 4px),
    radial-gradient(circle at 75% 44%, transparent 0, transparent 2px, var(--text-light) 3px, var(--text-light) 4px, transparent 4px),
    radial-gradient(circle at 46% 52%, transparent 0, transparent 4px, var(--text-light) 5px, var(--text-light) 6px, transparent 6px);
  width: 100%;
  height: 300%;
  top: 0;
  left: 0;
  position: absolute;
  animation: chatbot-bubbles 5s linear infinite both;
  z-index: 0;
}

@keyframes chatbot-bubbles {
  from {
    transform: translateY(0%);
  }
  to {
    transform: translateY(-66.666%);
  }
}