/* ============================================
   LOADING SCREEN - Part 1
   ============================================ */

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity 0.4s ease-out, visibility 0.4s ease-out;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-container {
  text-align: center;
  max-width: 400px;
  padding: 2rem;
}

/* Logo Animation */
.loading-logo {
  width: 150px;
  height: 150px;
  margin: 0 auto 2rem;
  animation: logoFloat 2s ease-in-out infinite;
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-10px) scale(1.05); }
}

.loading-logo object,
.loading-logo img {
  display: block;
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.logo-svg {
  width: 100%;
  height: 100%;
}

/* Rotating circle */
.logo-circle {
  animation: rotate 3s linear infinite;
  transform-origin: center;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Flowing particles */
.particle {
  animation: particleOrbit 2s ease-in-out infinite;
  opacity: 0;
}

.particle-1 { animation-delay: 0s; }
.particle-2 { animation-delay: 0.5s; }
.particle-3 { animation-delay: 1s; }
.particle-4 { animation-delay: 1.5s; }

@keyframes particleOrbit {
  0% { opacity: 0; transform: scale(0); }
  50% { opacity: 1; transform: scale(1.5); }
  100% { opacity: 0; transform: scale(0); }
}

/* Waves animation */
.wave {
  animation: waveFlow 1.5s ease-in-out infinite;
  stroke-dasharray: 40;
  stroke-dashoffset: 40;
}

.wave-1 { animation-delay: 0s; }
.wave-2 { animation-delay: 0.2s; }
.wave-3 { animation-delay: 0.4s; }

@keyframes waveFlow {
  to { stroke-dashoffset: 0; }
}

/* Loading Message */
.loading-message {
  margin-top: 2rem;
}

.loading-text {
  color: white;
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0 0 1rem;
  letter-spacing: 0.5px;
}

/* Animated dots */
.loading-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.dot {
  width: 8px;
  height: 8px;
  background: white;
  border-radius: 50%;
  animation: dotBounce 1.4s infinite ease-in-out;
  opacity: 0.6;
}

.dot:nth-child(1) { animation-delay: 0s; }
.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBounce {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.6;
  }
  40% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Progress Hint (shows after delay) */
.loading-hint {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
  margin-top: 1.5rem;
  opacity: 0;
  animation: fadeInHint 0.5s ease-out 2s forwards;
}

@keyframes fadeInHint {
  to { opacity: 1; }
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .loading-screen,
  .loading-logo,
  .logo-circle,
  .particle,
  .wave,
  .dot,
  .loading-hint {
    animation: none !important;
    transition: none !important;
  }

  .loading-logo {
    transform: none;
  }

  .particle {
    opacity: 0.5;
  }
}

/* Mobile optimization */
@media (max-width: 768px) {
  .loading-logo {
    width: 120px;
    height: 120px;
  }

  .loading-text {
    font-size: 1rem;
  }
}