:root {
  --preloader-surface: #0b1220;
  --preloader-accent: #06b6d4;
  --preloader-glow-1: rgba(124, 58, 237, 0.18);
  --preloader-glow-2: rgba(6, 182, 212, 0.16);
  --preloader-border: rgba(255, 255, 255, 0.08);
}

body.preloading {
  background: var(--preloader-surface);
}

.preloading #preloader {
  background: var(--preloader-surface);
}

body > .app-container,
body > .container {
  opacity: 0;
  transition: opacity 0.45s ease;
}

body > .app-container.loaded,
body > .container.loaded {
  opacity: 1;
}

#preloader {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 25% 20%, var(--preloader-glow-1), transparent 38%),
    radial-gradient(circle at 75% 0%, var(--preloader-glow-2), transparent 32%),
    radial-gradient(circle at 50% 60%, rgba(255, 255, 255, 0.04), transparent 48%),
    #0b1220;
  color: #e2e8f0;
  z-index: 9999;
  overflow: hidden;
  transition: opacity 0.45s ease, transform 0.45s ease;
}

#preloader::before,
#preloader::after {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.35;
  animation: float 3.4s ease-in-out infinite;
}

#preloader::before {
  background: radial-gradient(circle, rgba(139, 92, 246, 0.22) 0%, transparent 55%);
  top: -60px;
  left: -80px;
}

#preloader::after {
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 55%);
  bottom: -120px;
  right: -60px;
  animation-delay: 0.4s;
}

#preloader > * {
  position: relative;
  z-index: 1;
}

#preloader.hidden {
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
}

.preloader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: preloader-pulse 1.9s infinite ease-in-out;
}

.preloader-logo {
  width: 92px;
  height: 92px;
  object-fit: contain;
  filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.35));
}

.preloader-logo.logo-dark { display: none; }
.preloader-logo.logo-light { display: block; }
[data-theme="dark"] .preloader-logo.logo-light { display: none; }
[data-theme="dark"] .preloader-logo.logo-dark { display: block; }

.spinner {
  width: 42px;
  height: 42px;
  border: 3px solid var(--preloader-border);
  border-top: 3px solid var(--preloader-accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  box-shadow: 0 0 0 1px var(--preloader-border);
}

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

@keyframes preloader-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.94); opacity: 0.85; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}