/* Nền phủ toàn trang */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(30, 30, 30, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  display: none; /* Ẩn mặc định */
}

/* Vòng xoay trung tâm */
.loading-spinner {
  text-align: center;
  color: white;
}

.spinner-svg {
  animation: rotate 2s linear infinite;
  width: 80px;
  height: 80px;
  margin-bottom: 12px;
}

.path {
  stroke: #00aaff;
  stroke-linecap: round;
  animation: dash 1.5s ease-in-out infinite, colorChange 4s ease-in-out infinite;
}

@keyframes rotate {
  100% { transform: rotate(360deg); }
}

@keyframes dash {
  0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
  50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
  100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

@keyframes colorChange {
  0% { stroke: #00aaff; }
  33% { stroke: #ffaa00; }
  66% { stroke: #ff4444; }
  100% { stroke: #00aaff; }
}

/* Dòng chữ bên dưới */
.loading-spinner p {
  font-size: 18px;
  font-weight: 500;
}