/* Ultra Modern Loading Screen Styles */
:root {
  --primary-color: #2196F3;
  --primary-dark: #1976D2;
  --surface-color: #FFFFFF;
  --shadow-color: rgba(0, 0, 0, 0.1);
  --gradient-start: rgba(33, 150, 243, 0.15);
  --gradient-end: rgba(25, 118, 210, 0.05);
  
  /* Responsive sizes */
  --logo-size-desktop: 180px;
  --logo-size-tablet: 160px;
  --logo-size-mobile: 140px;
  --padding-desktop: 2.5rem;
  --padding-tablet: 2rem;
  --padding-mobile: 1.5rem;
}

body,
html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(
    circle at center,
    var(--gradient-start) 0%,
    var(--surface-color) 70%
  );
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  overflow: hidden;
}

#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  background: radial-gradient(
    circle at center,
    var(--gradient-start) 0%,
    var(--gradient-end) 100%
  );
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

.logo-container {
  position: relative;
  padding: var(--padding-desktop);
  perspective: 1000px;
  width: fit-content;
  max-width: 90vw;
}

.logo-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at center,
    var(--gradient-start) 0%,
    transparent 70%
  );
  filter: blur(40px);
  z-index: -1;
  animation: glow 6s ease-in-out infinite;
}

.logo-card {
  position: relative;
  background: rgba(255, 255, 255, 0.7);
  padding: var(--padding-desktop);
  border-radius: 2.5rem;
  box-shadow: 
    0 20px 50px rgba(33, 150, 243, 0.15),
    0 10px 20px rgba(0, 0, 0, 0.05),
    inset 0 0 20px rgba(255, 255, 255, 0.5);
  animation: float 6s ease-in-out infinite;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: all 0.3s ease;
  overflow: hidden;
  transform-style: preserve-3d;
  width: fit-content;
}

.logo-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.4),
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.4)
  );
  border-radius: 2.5rem;
  z-index: -1;
  animation: shine 6s ease-in-out infinite;
  opacity: 0.7;
}

.logo-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% -20%,
    rgba(255, 255, 255, 0.8),
    transparent 70%
  );
  z-index: 1;
}

.logo-image {
  width: var(--logo-size-desktop);
  height: var(--logo-size-desktop);
  border-radius: 2rem;
  transform-origin: center;
  animation: pulse 4s ease-in-out infinite;
  display: block;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.1));
  position: relative;
  z-index: 2;
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) scale(1) rotateX(0) rotateY(0);
  }
  50% {
    transform: translateY(-20px) scale(1.02) rotateX(2deg) rotateY(-2deg);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    filter: brightness(1);
  }
  50% {
    transform: scale(1.05);
    filter: brightness(1.1);
  }
}

@keyframes shine {
  0%, 100% {
    opacity: 0.5;
    transform: translateX(-100%) rotate(-45deg);
  }
  50% {
    opacity: 0.8;
    transform: translateX(100%) rotate(-45deg);
  }
}

@keyframes glow {
  0%, 100% {
    opacity: 0.5;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

/* Loading indicator */
.loading-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.7rem;
  margin-top: 2rem;
  position: relative;
  z-index: 2;
}

.dot {
  width: 6px;
  height: 6px;
  background: var(--primary-color);
  border-radius: 50%;
  opacity: 0.6;
  filter: drop-shadow(0 2px 4px rgba(33, 150, 243, 0.3));
}

.dot:nth-child(1) { animation: dot-animation 1.5s infinite; }
.dot:nth-child(2) { animation: dot-animation 1.5s infinite 0.2s; }
.dot:nth-child(3) { animation: dot-animation 1.5s infinite 0.4s; }

@keyframes dot-animation {
  0%, 100% {
    transform: scale(1) translateY(0);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.5) translateY(-2px);
    opacity: 1;
  }
}

/* Tablet styles */
@media (max-width: 768px) {
  .logo-container {
    padding: var(--padding-tablet);
  }

  .logo-card {
    padding: var(--padding-tablet);
    border-radius: 2rem;
  }

  .logo-image {
    width: var(--logo-size-tablet);
    height: var(--logo-size-tablet);
    border-radius: 1.5rem;
  }

  @keyframes float {
    0%, 100% {
      transform: translateY(0) scale(1) rotateX(0) rotateY(0);
    }
    50% {
      transform: translateY(-15px) scale(1.02) rotateX(1deg) rotateY(-1deg);
    }
  }
}

/* Mobile styles */
@media (max-width: 480px) {
  .logo-container {
    padding: var(--padding-mobile);
  }

  .logo-card {
    padding: var(--padding-mobile);
    border-radius: 1.5rem;
    box-shadow: 
      0 15px 35px rgba(33, 150, 243, 0.15),
      0 8px 15px rgba(0, 0, 0, 0.05),
      inset 0 0 15px rgba(255, 255, 255, 0.5);
  }

  .logo-image {
    width: var(--logo-size-mobile);
    height: var(--logo-size-mobile);
    border-radius: 1.25rem;
  }

  .loading-dots {
    gap: 0.5rem;
    margin-top: 1.5rem;
  }

  .dot {
    width: 5px;
    height: 5px;
  }

  @keyframes float {
    0%, 100% {
      transform: translateY(0) scale(1);
    }
    50% {
      transform: translateY(-10px) scale(1.02);
    }
  }
}

/* Small mobile styles */
@media (max-width: 320px) {
  :root {
    --logo-size-mobile: 100px;
    --padding-mobile: 1.25rem;
  }

  .logo-card {
    border-radius: 1.25rem;
  }

  .loading-dots {
    gap: 0.4rem;
    margin-top: 1.25rem;
  }

  .dot {
    width: 4px;
    height: 4px;
  }
}

/* Landscape orientation */
@media (max-height: 480px) and (orientation: landscape) {
  .logo-container {
    padding: var(--padding-mobile);
  }

  .logo-card {
    padding: var(--padding-mobile);
  }

  .logo-image {
    width: var(--logo-size-mobile);
    height: var(--logo-size-mobile);
  }

  .loading-dots {
    margin-top: 1rem;
  }
}

/* High DPI screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .logo-card {
    box-shadow: 
      0 20px 60px rgba(33, 150, 243, 0.2),
      0 12px 24px rgba(0, 0, 0, 0.07),
      inset 0 0 25px rgba(255, 255, 255, 0.6);
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  .logo-card,
  .logo-image,
  .dot {
    animation: none;
  }

  .logo-card {
    transform: translateY(-10px);
  }
}