/**
 * Premium page / route loader — soft orbital pulse.
 * Pure CSS. Respects prefers-reduced-motion.
 */

/* ═══════════ FULL PAGE LOADER ═══════════ */
.glass-page-loader {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 56vh;
  padding: 48px 16px;
  overflow: hidden;
}

.glass-page-loader::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(480px 280px at 50% 40%, rgba(13, 148, 136, 0.14), transparent 65%),
    radial-gradient(360px 240px at 70% 75%, rgba(2, 132, 199, 0.08), transparent 60%);
}

.glass-page-loader__card {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(300px, 90vw);
  padding: 32px 28px 28px;
  text-align: center;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 24px 56px rgba(7, 27, 40, 0.1);
  backdrop-filter: blur(20px) saturate(1.25);
  -webkit-backdrop-filter: blur(20px) saturate(1.25);
  animation: glassLoaderCardIn 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes glassLoaderCardIn {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.glass-page-loader__card > p:first-of-type {
  margin: 20px 0 0;
  font-family: "Plus Jakarta Sans", "Sora", "Segoe UI", sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #0f172a;
}

.glass-page-loader__hint {
  margin: 4px 0 0 !important;
  font-size: 0.78rem !important;
  font-weight: 500 !important;
  letter-spacing: 0.01em !important;
  color: #64748b !important;
}

/* ═══════════ ORBITAL LOADER ═══════════ */
.glass-loader-orb {
  position: relative;
  width: 88px;
  height: 88px;
  margin: 0 auto;
}

.glass-loader-orb--sm {
  width: 64px;
  height: 64px;
}

.glass-loader-orb__glow {
  position: absolute;
  inset: 12%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45, 212, 191, 0.45), rgba(2, 132, 199, 0.12) 55%, transparent 70%);
  filter: blur(8px);
  animation: glassOrbGlow 2.2s ease-in-out infinite;
}

@keyframes glassOrbGlow {
  0%,
  100% {
    transform: scale(0.85);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

.glass-loader-orb__core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  background: linear-gradient(145deg, #2dd4bf 0%, #0d9488 45%, #0284c7 100%);
  box-shadow:
    0 8px 20px rgba(13, 148, 136, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
  animation: glassOrbPulse 1.8s ease-in-out infinite;
}

.glass-loader-orb--sm .glass-loader-orb__core {
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
}

.glass-loader-orb__core-shine {
  position: absolute;
  top: 18%;
  left: 22%;
  width: 38%;
  height: 28%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.55);
  filter: blur(1px);
}

@keyframes glassOrbPulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.08);
  }
}

.glass-loader-orb__ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  box-sizing: border-box;
}

.glass-loader-orb__ring--outer {
  border-top-color: #0d9488;
  border-right-color: rgba(56, 189, 248, 0.35);
  animation: glassOrbSpin 1.15s linear infinite;
}

.glass-loader-orb__ring--inner {
  inset: 14%;
  border-bottom-color: #0284c7;
  border-left-color: rgba(45, 212, 191, 0.4);
  animation: glassOrbSpinRev 1.75s linear infinite;
}

.glass-loader-orb--sm .glass-loader-orb__ring--inner {
  inset: 16%;
}

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

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

/* Tiny satellites riding the outer ring */
.glass-loader-orb__sat {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  margin: -3.5px 0 0 -3.5px;
  border-radius: 50%;
  background: #5eead4;
  box-shadow: 0 0 10px rgba(45, 212, 191, 0.9);
  animation: glassOrbSat 1.15s linear infinite;
}

.glass-loader-orb__sat--2 {
  width: 5px;
  height: 5px;
  margin: -2.5px 0 0 -2.5px;
  background: #38bdf8;
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.85);
  animation-duration: 1.75s;
  animation-direction: reverse;
  animation-name: glassOrbSatInner;
}

.glass-loader-orb--sm .glass-loader-orb__sat {
  width: 5px;
  height: 5px;
  margin: -2.5px 0 0 -2.5px;
}

.glass-loader-orb--sm .glass-loader-orb__sat--2 {
  width: 4px;
  height: 4px;
  margin: -2px 0 0 -2px;
}

@keyframes glassOrbSat {
  from {
    transform: rotate(0deg) translateX(42px) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(42px) rotate(-360deg);
  }
}

@keyframes glassOrbSatInner {
  from {
    transform: rotate(0deg) translateX(30px) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(30px) rotate(-360deg);
  }
}

.glass-loader-orb--sm .glass-loader-orb__sat {
  animation-name: glassOrbSatSm;
}

.glass-loader-orb--sm .glass-loader-orb__sat--2 {
  animation-name: glassOrbSatInnerSm;
}

@keyframes glassOrbSatSm {
  from {
    transform: rotate(0deg) translateX(30px) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(30px) rotate(-360deg);
  }
}

@keyframes glassOrbSatInnerSm {
  from {
    transform: rotate(0deg) translateX(22px) rotate(0deg);
  }
  to {
    transform: rotate(360deg) translateX(22px) rotate(-360deg);
  }
}

/* Smooth progress track */
.glass-loader-track {
  position: relative;
  width: 72%;
  height: 3px;
  margin-top: 18px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(13, 148, 136, 0.12);
}

.glass-loader-track__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 42%;
  border-radius: inherit;
  background: linear-gradient(90deg, #14b8a6, #0284c7);
  animation: glassTrackSlide 1.35s ease-in-out infinite;
}

@keyframes glassTrackSlide {
  0% {
    left: -42%;
  }
  100% {
    left: 100%;
  }
}

/* Legacy class names kept so older markup still styles safely */
.glass-loader-bars {
  display: none;
}

.glass-spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto;
  border-radius: 50%;
  border: 3px solid rgba(13, 148, 136, 0.15);
  border-top-color: #0d9488;
  animation: glassOrbSpin 0.8s linear infinite;
}

/* ═══════════ ROUTE VEIL ═══════════ */
.glass-route-veil {
  position: fixed;
  inset: 0;
  z-index: 99990;
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0;
  background: rgba(241, 245, 249, 0.92);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  transition: opacity 0.22s ease, backdrop-filter 0.22s ease;
}

/* Cover unstyled paint during CSS load; block clicks until ready. */
.glass-route-veil.is-active {
  opacity: 1;
  backdrop-filter: blur(6px) saturate(1.06);
  -webkit-backdrop-filter: blur(6px) saturate(1.06);
  /* Allow the originating click to finish before blocking the UI */
  pointer-events: none;
}

html.eduoxy-ui-pending .glass-route-veil.is-active {
  pointer-events: auto;
}

html.eduoxy-ui-pending .glass-route-veil {
  opacity: 1;
  pointer-events: auto;
  background: #f1f5f9;
}

html.eduoxy-ui-pending .glass-route-veil__loader {
  opacity: 1;
  transform: scale(1);
}

.glass-route-veil__loader {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.18s ease, transform 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}

.glass-route-veil__loader--card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 28px 32px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 20px 48px rgba(7, 27, 40, 0.12);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
}

.glass-route-veil__label {
  margin: 0;
  font-family: "Plus Jakarta Sans", "Sora", "Segoe UI", sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #0f172a;
}

.glass-route-veil.is-active .glass-route-veil__loader {
  opacity: 1;
  transform: scale(1);
}

/* ═══════════ REDUCED MOTION ═══════════ */
@media (prefers-reduced-motion: reduce) {
  .glass-page-loader__card,
  .glass-loader-orb__glow,
  .glass-loader-orb__core,
  .glass-loader-orb__ring,
  .glass-loader-orb__sat,
  .glass-loader-track__fill,
  .glass-spinner,
  .glass-route-veil__loader {
    animation: none !important;
    transition: none !important;
  }

  .glass-loader-orb__ring--outer {
    border-top-color: #0d9488;
    border-right-color: #0d9488;
    border-bottom-color: rgba(13, 148, 136, 0.25);
    border-left-color: rgba(13, 148, 136, 0.25);
    opacity: 0.85;
  }

  .glass-loader-orb__ring--inner,
  .glass-loader-orb__sat {
    opacity: 0;
  }

  .glass-route-veil.is-active {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}