/* Scholarly Indexing Loader - Premium Design */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

/* OVERLAY */
.sis-page-loader-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: #ffffff;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

.sis-page-loader-overlay.show {
  opacity: 1;
  visibility: visible;
}

/* CONTAINER */
.sis-page-loader-container {
  width: 260px;
  height: 260px;
  position: relative;
}

/* LOGO CORE */
.sis-page-loader-logo-container {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  animation: sisLoaderBreathe 3.2s ease-in-out infinite;
}

@keyframes sisLoaderBreathe {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.04);
  }
}

/* LOGO IMAGE */
.sis-page-loader-img-holder {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: url("https://res.cloudinary.com/dsypclqxk/image/upload/v1763051843/SIS_wcdf5h_31ba42.jpg") center/cover no-repeat;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.12);
}

/* ORBIT 1 — ORANGE */
.sis-page-loader-outer1 {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(247, 147, 30, 0.25);
  border-top-color: rgba(247, 147, 30, 0.85);
  animation: sisLoaderSpin 6s linear infinite;
}

/* ORBIT 2 — BLUE-BLACK */
.sis-page-loader-outer2 {
  position: absolute;
  inset: 14px;
  border-radius: 50%;
  border: 2px solid rgba(17, 24, 39, 0.18);
  border-bottom-color: rgba(17, 24, 39, 0.75);
  animation: sisLoaderSpinReverse 4.5s linear infinite;
}

/* ROTATION */
@keyframes sisLoaderSpin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes sisLoaderSpinReverse {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(-360deg);
  }
}

/* LOADER TEXT */
.sis-page-loader-text {
  position: absolute;
  bottom: -56px;
  width: 100%;
  text-align: center;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #111827;
}

/* ROTATING TEXT */
.sis-page-loader-rotating-text {
  display: inline-block;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.sis-page-loader-rotating-text.show {
  opacity: 1;
  transform: translateY(0);
}

/* ACCESSIBILITY */
@media (prefers-reduced-motion: reduce) {
  .sis-page-loader-outer1,
  .sis-page-loader-outer2,
  .sis-page-loader-logo-container,
  .sis-page-loader-rotating-text {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}