/* =======================
   Required CSS Variables
   ======================= */
:root {
  --primary-light: #9361f3;
  --secondary: #00e4d0;
  --dark: #0a0e17;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =======================
   Loader Styles
   ======================= */
#loader {
  position: fixed;
  inset: 0;
  display: none;                      /* hidden by default */
  background: rgba(10, 14, 23, 0.9);  /* var(--dark) with opacity */
  z-index: 9999;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-family: "Segoe UI", sans-serif;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

#loader.visible {
  display: flex;                      /* show when .visible is added */
}

#loader::before {
  content: "";
  width: 50px;
  height: 50px;
  border: 4px solid var(--primary-light);
  border-top-color: var(--secondary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  box-shadow: 0 0 10px var(--primary-light);
}

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