body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

html {
  overflow: hidden scroll;
}

/* Modern 2025 Loader - White Label Integration */
#loading-bg {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--initial-loader-bg, #FFFFFF);
  block-size: 100%;
  inline-size: 100%;
  gap: 2rem;
  opacity: 1;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

#loading-bg.fade-out {
  opacity: 0;
}

/* Logo Container - Modern spacing and animation */
.loading-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  animation: fadeInScale 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.loading-logo img {
  max-width: 180px;
  max-height: 80px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.08));
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.loading-logo img:hover {
  transform: scale(1.02);
}

/* Brand Name - Modern typography */
.loading-brand-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--initial-loader-color, #666CFF);
  letter-spacing: -0.02em;
  text-align: center;
  opacity: 0.9;
}

/* Modern Spinner - 2025 Design */
.loading-spinner {
  position: relative;
  width: 64px;
  height: 64px;
  animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
  opacity: 0;
}

.spinner-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: var(--initial-loader-color, #666CFF);
  animation: modernSpin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring:nth-child(1) {
  animation-delay: 0s;
  opacity: 1;
}

.spinner-ring:nth-child(2) {
  animation-delay: -0.4s;
  opacity: 0.6;
  width: 85%;
  height: 85%;
  top: 7.5%;
  left: 7.5%;
}

.spinner-ring:nth-child(3) {
  animation-delay: -0.8s;
  opacity: 0.3;
  width: 70%;
  height: 70%;
  top: 15%;
  left: 15%;
}

/* Loading Text - Subtle and modern */
.loading-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: #64748b;
  letter-spacing: 0.02em;
  animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.4s forwards, pulse 2s ease-in-out 1s infinite;
  opacity: 0;
}

/* Modern Animations */
@keyframes modernSpin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Responsive Design */
@media (max-width: 640px) {
  .loading-logo img {
    max-width: 140px;
    max-height: 60px;
  }

  .loading-brand-name {
    font-size: 1.125rem;
  }

  .loading-spinner {
    width: 52px;
    height: 52px;
  }

  .loading-text {
    font-size: 0.8125rem;
  }

  #loading-bg {
    gap: 1.5rem;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  #loading-bg {
    background: var(--initial-loader-bg, #0f172a);
  }

  .loading-brand-name {
    color: var(--initial-loader-color, #818cf8);
  }

  .loading-text {
    color: #94a3b8;
  }

  .loading-logo img {
    filter: drop-shadow(0 4px 12px rgba(255, 255, 255, 0.1));
  }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .loading-logo img:hover {
    transform: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .loading-brand-name,
  .loading-text {
    font-weight: 700;
  }

  .spinner-ring {
    border-width: 4px;
  }
}