body { font-family: 'Be Vietnam', Arial, sans-serif; opacity:0; transition:opacity 0.7s; }
body.page-loaded { opacity:1; }
.aos-init[data-aos] { opacity: 0; }
.aos-animate[data-aos] { opacity: 1; }
.navbar-nav .nav-link {
    padding-left: 2rem !important;
    padding-right: 2rem !important;
}
@media (max-width: 991.98px) {
    .navbar-nav .nav-link {
        padding-left: 2rem !important;
        padding-right: 2rem !important;
    }
}
/* Loading overlay */
#loading-overlay {
  position: fixed;
  z-index: 9999;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s;
}
#loading-overlay.hide {
  opacity: 0;
  pointer-events: none;
}
.loader {
  border: 6px solid #e3f6fd;
  border-top: 6px solid #2196f3;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.floating-contact {
  position: fixed;
  right: 24px;
  bottom: 80px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.contact-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s;
}
.contact-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
}
.contact-btn img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}
.contact-btn.zalo { border: 4px solid #25d366; }
.contact-btn.messenger { border: 4px solid #2196f3; }
.contact-btn.phone { border: 4px solid #25d366; }
.contact-btn.chatbot { border: 4px solid #43b97f; background: #e3f6fd; }
.contact-btn.chatbot img { width: 38px; height: 38px; }
#chatbot-popup {
  position: fixed;
  bottom: 120px;
  right: 32px;
  width: 370px;
  max-width: 95vw;
  height: 480px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  z-index: 10000;
  display: none;
  flex-direction: column;
  overflow: hidden;
}
#chatbot-popup.open { display: flex; }
#chatbot-header {
  background: linear-gradient(90deg, #43b97f 0%, #1abc9c 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#chatbot-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}
#chatbot-body {
  flex: 1;
  background: #fafbfc;
  padding: 18px 14px 0 14px;
  overflow-y: auto;
}
#chatbot-footer {
  padding: 12px 14px;
  background: #f3f3f3;
  display: flex;
  gap: 8px;
}
#chatbot-input {
  flex: 1;
  border-radius: 8px;
  border: 1.5px solid #b3c6e6;
  padding: 7px 12px;
  font-size: 1rem;
}
#chatbot-send {
  background: #43b97f;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 7px 18px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
}
#chatbot-send:hover { background: #1abc9c; }
#catbot-popup {
  position: fixed;
  bottom: 120px;
  right: 32px;
  width: 370px;
  max-width: 95vw;
  height: 480px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  z-index: 10000;
  display: none;
  flex-direction: column;
  overflow: hidden;
}
#catbot-popup.open { display: flex; }
#catbot-header {
  background: linear-gradient(90deg, #43b97f 0%, #1abc9c 100%);
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
#catbot-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}
#catbot-iframe {
  flex: 1;
  width: 100%;
  border: none;
  min-height: 0;
}
.contact-btn.catbot {
  border: 4px solid #ffb300;
  background: #fffbe7;
  display: none !important;
}
.contact-btn.catbot img {
  width: 38px;
  height: 38px;
}
/* Dialogflow Messenger custom (optional) */
df-messenger {
  --df-messenger-bot-message: #e3f6fd;
  --df-messenger-button-titlebar-color: #43b97f;
  --df-messenger-chat-background-color: #fff;
  --df-messenger-font-color: #222;
  --df-messenger-send-icon: #43b97f;
  --df-messenger-user-message: #43b97f;
  z-index: 99999;
}
/* Đổi màu header Poe chatbot */
iframe[src*="poe.com"] ~ style + div[style*="border-radius:16px"] > div:first-child, 
iframe[src*="poe.com"]::-webkit-scrollbar-thumb {
  background: #2196f3 !important;
}