:root {
  color-scheme: dark;
  background: var(--surface-base);
  --surface-base: #050b18;
  --surface-base-rgb: 5, 11, 24;
  --surface-overlay: #060b1c;
  --surface-glass: rgba(var(--surface-base-rgb), 0.65);
  --surface-shadow-strong: rgba(8, 12, 28, 0.45);
  --brand-primary: #8f7bfa;
  --brand-primary-strong: #7c3aed;
  --brand-accent: #22d3ee;
  --brand-accent-soft: #6ee7f0;
  --brand-primary-rgb: 143, 123, 250;
  --brand-primary-strong-rgb: 124, 58, 237;
  --brand-accent-rgb: 34, 211, 238;
  --text-primary: #ededed;
  --text-primary-rgb: 237, 237, 237;
  --text-inverted: #050b18;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Manrope', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--surface-base);
  color: var(--text-primary);
}

#root {
  min-height: 100vh;
  display: flex;
  background: var(--surface-base);
}

.initial-loading {
  position: relative;
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  text-align: center;
  background: radial-gradient(
    circle at 20% 20%,
    var(--surface-base) 0%,
    var(--surface-overlay) 65%,
    var(--surface-overlay) 100%
  );
  color: var(--text-primary);
  overflow: hidden;
}

.initial-loading__background {
  position: absolute;
  inset: -40%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0.85;
}

.initial-loading__gradient {
  width: 140%;
  height: 140%;
  background: linear-gradient(
    135deg,
    var(--brand-primary-strong) 0%,
    var(--brand-primary) 35%,
    var(--brand-accent) 68%,
    var(--brand-accent-soft) 100%
  );
  filter: blur(120px);
  transform: scale(1.1);
  animation: initial-loading-gradient 18s ease-in-out infinite;
}

.initial-loading__glow {
  position: absolute;
  width: 60vmin;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(var(--brand-primary-rgb), 0.38),
    rgba(var(--brand-primary-strong-rgb), 0)
  );
  animation: initial-loading-glow 6s ease-in-out infinite;
}

.initial-loading__content {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  max-width: 420px;
  padding: 32px 28px;
  border-radius: 32px;
  background: var(--surface-glass);
  box-shadow: 0 24px 60px var(--surface-shadow-strong);
  backdrop-filter: blur(16px);
}

.initial-loading__logo {
  position: relative;
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border-radius: 24px;
  background: linear-gradient(
    145deg,
    rgba(var(--brand-primary-rgb), 0.42),
    rgba(var(--brand-accent-rgb), 0.3)
  );
  box-shadow: 0 18px 42px rgba(var(--brand-primary-rgb), 0.35);
  color: var(--text-inverted);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.initial-loading__title {
  font-size: 1rem;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.initial-loading__hint {
  font-size: 0.85rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  text-transform: none;
  color: rgba(var(--text-primary-rgb), 0.72);
}

.initial-loading__status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 6px;
}

.initial-loading__spinner {
  width: 18px;
  height: 18px;
  border-radius: 9999px;
  border: 2px solid rgba(var(--text-primary-rgb), 0.22);
  border-top-color: rgba(var(--brand-accent-rgb), 0.9);
  animation: initial-loading-spin 0.9s linear infinite;
}

@keyframes initial-loading-spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes initial-loading-gradient {
  0% {
    transform: scale(1) rotate(0deg);
  }
  50% {
    transform: scale(1.08) rotate(180deg);
  }
  100% {
    transform: scale(1) rotate(360deg);
  }
}

@keyframes initial-loading-glow {
  0%,
  100% {
    transform: scale(0.9);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.9;
  }
}

@media (max-width: 480px) {
  .initial-loading {
    padding: 32px 16px;
  }

  .initial-loading__content {
    padding: 24px 20px;
    gap: 10px;
  }

  .initial-loading__title {
    font-size: 0.95rem;
  }

  .initial-loading__hint {
    font-size: 0.8rem;
  }

  .initial-loading__status {
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .initial-loading__gradient,
  .initial-loading__glow {
    animation: none !important;
  }

  .initial-loading__gradient {
    transform: none;
    background: linear-gradient(
      135deg,
      var(--brand-primary-strong),
      var(--brand-primary) 45%,
      var(--brand-accent) 85%,
      var(--brand-accent-soft)
    );
  }

  .initial-loading__content {
    backdrop-filter: none;
    background: rgba(var(--surface-base-rgb), 0.88);
  }

  .initial-loading__spinner {
    animation: none !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --surface-glass: rgba(var(--surface-base-rgb), 0.9);
    --surface-shadow-strong: rgba(2, 4, 12, 0.75);
  }

  .initial-loading {
    background: radial-gradient(
      circle at 20% 20%,
      rgba(var(--surface-base-rgb), 0.95) 0%,
      rgba(var(--surface-base-rgb), 1) 65%,
      rgba(0, 0, 0, 1) 100%
    );
  }

  .initial-loading__background {
    opacity: 1;
  }

  .initial-loading__gradient {
    filter: blur(72px);
  }

  .initial-loading__content {
    background: rgba(var(--surface-base-rgb), 0.95);
    box-shadow: 0 30px 90px var(--surface-shadow-strong);
    backdrop-filter: blur(8px);
  }

  .initial-loading__logo {
    background: linear-gradient(
      145deg,
      rgba(var(--brand-primary-rgb), 0.75),
      rgba(var(--brand-accent-rgb), 0.55)
    );
    color: var(--text-primary);
  }

  .initial-loading__title {
    color: var(--text-primary);
  }

  .initial-loading__hint {
    color: rgba(var(--text-primary-rgb), 0.95);
  }
}