/* ===== SHARED LOADING OVERLAY — HL & MODULAR dùng chung ===== */

#man_hinh_tai {
  position: fixed;
  inset: 0;
  background: #025b48;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 100000;
  transition: opacity 0.4s ease;
}

#man_hinh_tai.an_di {
  opacity: 0;
  pointer-events: none;
}

.vong_quay {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255,255,255,0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: quay 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes quay {
  to { transform: rotate(360deg); }
}

#man_hinh_tai p {
  color: white;
  font-size: 16px;
  opacity: 0.9;
  margin: 0;
}