/* ==========================================================================
   GASTERUS v3 — 3D BRAND LOADER
   Layar pembuka 3D berlogo GASTERUS saat halaman dimuat.
   Bersifat selapis: tidak mengubah layout, hanya menutupi sebentar lalu
   menghilang sendiri. Tidak pernah memblokir halaman.
   ========================================================================== */

.gasterus-loader {
  position: fixed;
  inset: 0;
  z-index: 2147483000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  background:
    radial-gradient(120% 90% at 50% 0%, #1e3a8a 0%, #0f1e46 45%, #050b1c 100%);
  font-family: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;
  opacity: 1;
  transition: opacity 0.45s ease, visibility 0.45s ease;
  -webkit-font-smoothing: antialiased;
}

/* Cincin orbital 3D yang berputar di belakang logo */
.gasterus-loader-ring {
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(96, 165, 250, 0.18);
  border-top-color: rgba(96, 165, 250, 0.85);
  border-right-color: rgba(59, 130, 246, 0.55);
  animation: gasterusLoaderSpin 1.1s linear infinite;
}

.gasterus-loader-ring--two {
  width: 340px;
  height: 340px;
  border-width: 1px;
  border-color: rgba(148, 163, 184, 0.12);
  border-bottom-color: rgba(14, 165, 233, 0.6);
  animation-duration: 2.1s;
  animation-direction: reverse;
}

.gasterus-loader-ring--three {
  width: 420px;
  height: 420px;
  border-width: 1px;
  border-color: rgba(148, 163, 184, 0.08);
  border-left-color: rgba(59, 130, 246, 0.45);
  animation-duration: 3.4s;
}

/* Cahayakedip di belakang logo */
.gasterus-loader-glow {
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.45) 0%, rgba(59, 130, 246, 0) 70%);
  animation: gasterusLoaderGlow 2s ease-in-out infinite;
}

/* Kubus 3D yangyaw/parallax halus di belakang logo */
.gasterus-loader-cube {
  position: absolute;
  width: 64px;
  height: 64px;
  transform-style: preserve-3d;
  animation: gasterusLoaderCube 6s linear infinite;
  opacity: 0.35;
}

.gasterus-loader-cube span {
  position: absolute;
  inset: 0;
  border: 1px solid rgba(147, 197, 253, 0.5);
  background: rgba(59, 130, 246, 0.06);
}

.gasterus-loader-cube span:nth-child(1) { transform: translateZ(32px); }
.gasterus-loader-cube span:nth-child(2) { transform: rotateY(90deg) translateZ(32px); }
.gasterus-loader-cube span:nth-child(3) { transform: rotateY(180deg) translateZ(32px); }
.gasterus-loader-cube span:nth-child(4) { transform: rotateY(-90deg) translateZ(32px); }
.gasterus-loader-cube span:nth-child(5) { transform: rotateX(90deg) translateZ(32px); }
.gasterus-loader-cube span:nth-child(6) { transform: rotateX(-90deg) translateZ(32px); }

/* Logo GASTERUS */
.gasterus-loader-logo {
  position: relative;
  width: 132px;
  height: 132px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #1e3a8a 0%, #0b1c40 100%);
  border: 1px solid rgba(96, 165, 250, 0.4);
  box-shadow:
    0 24px 60px rgba(2, 8, 23, 0.75),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 0 44px rgba(59, 130, 246, 0.35);
  animation: gasterusLoaderLogo 1.6s ease-in-out infinite;
  overflow: hidden;
}

.gasterus-loader-logo img {
  width: 78%;
  height: 78%;
  object-fit: contain;
}

/* Kilau melintas di atas logo */
.gasterus-loader-logo::after {
  content: '';
  position: absolute;
  top: -60%;
  left: -120%;
  width: 60%;
  height: 220%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: rotate(18deg);
  animation: gasterusLoaderShine 2.2s ease-in-out infinite;
}

/* Tulisan brand */
.gasterus-loader-brand {
  position: relative;
  font-weight: 900;
  letter-spacing: 8px;
  font-size: 22px;
  color: #e2e8f0;
  text-shadow: 0 2px 18px rgba(59, 130, 246, 0.6);
  animation: gasterusLoaderBrand 1.6s ease-in-out infinite;
}

.gasterus-loader-tagline {
  position: relative;
  font-size: 11px;
  letter-spacing: 3px;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
}

/* Bar progres tipis */
.gasterus-loader-bar {
  position: relative;
  width: 168px;
  height: 3px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.18);
  overflow: hidden;
}

.gasterus-loader-bar span {
  display: block;
  height: 100%;
  width: 40%;
  border-radius: 999px;
  background: linear-gradient(90deg, #3b82f6, #60a5fa, #0ea5e9);
  animation: gasterusLoaderBar 1.1s ease-in-out infinite;
}

/* Keadaan selesai: hilang tanpa mengganggu layout */
.gasterus-loader.is-done {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

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

@keyframes gasterusLoaderGlow {
  0%, 100% { opacity: 0.45; transform: scale(0.92); }
  50% { opacity: 0.9; transform: scale(1.08); }
}

@keyframes gasterusLoaderCube {
  from { transform: rotateX(0deg) rotateY(0deg); }
  to { transform: rotateX(360deg) rotateY(360deg); }
}

@keyframes gasterusLoaderLogo {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-7px) scale(1.035); }
}

@keyframes gasterusLoaderBrand {
  0%, 100% { opacity: 0.72; }
  50% { opacity: 1; }
}

@keyframes gasterusLoaderShine {
  0% { left: -120%; }
  55%, 100% { left: 150%; }
}

@keyframes gasterusLoaderBar {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(260%); }
}

@media (prefers-reduced-motion: reduce) {
  .gasterus-loader-ring,
  .gasterus-loader-glow,
  .gasterus-loader-cube,
  .gasterus-loader-logo,
  .gasterus-loader-brand,
  .gasterus-loader-logo::after,
  .gasterus-loader-bar span {
    animation: none !important;
  }
}