/* Modern Logo Loop Animation */
.logo-loop-section {
  padding: 4rem 0;
  overflow: hidden;
  background: var(--body-color);
  position: relative;
}

/* Animated light beams on top and bottom borders */
.logo-loop-section::before,
.logo-loop-section::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.8) 50%,
    transparent 100%
  );
  background-size: 50% 100%;
  animation: lightBeamTravel 3s linear infinite;
  pointer-events: none;
  z-index: 10;
}

.logo-loop-section::before {
  top: 0;
}

.logo-loop-section::after {
  bottom: 0;
  animation-delay: 1.5s; /* Offset the bottom beam */
}

/* Light theme - dark grey/black beams */
body.white-mode .logo-loop-section::before,
body.white-mode .logo-loop-section::after {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(30, 30, 30, 0.8) 50%,
    transparent 100%
  );
  background-size: 50% 100%;
}

@keyframes lightBeamTravel {
  0% {
    background-position: -50% 0;
  }
  100% {
    background-position: 150% 0;
  }
}

.logo-loop-header {
  text-align: center;
  margin-bottom: 3rem;
}

.logo-loop-header h1 {
  font-size: 2.5rem;
  color: var(--title-color);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.logo-loop-container {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 2rem 0;
  --x: 50%;
  --y: 50%;
  --r: 300px;
}

/* Gradient masks on edges */
.logo-loop-container::before,
.logo-loop-container::after {
  content: '';
  position: absolute;
  top: 0;
  width: 150px;
  height: 100%;
  z-index: 2;
  pointer-events: none;
}

.logo-loop-container::before {
  left: 0;
  background: linear-gradient(to right, var(--body-color), transparent);
}

.logo-loop-container::after {
  right: 0;
  background: linear-gradient(to left, var(--body-color), transparent);
}

.logo-loop-track {
  display: flex;
  gap: 4rem;
  animation: scrollPixelPerfect 10s linear infinite;
  will-change: transform;
  backface-visibility: hidden;
  /* Ensure smooth rendering and prevent sub-pixel issues */
  transform: translate3d(0, 0, 0);
  transform-style: preserve-3d;
  /* CSS variable for pixel-perfect animation */
  --track-width: -50%;
}

.logo-loop-track.paused {
  animation-play-state: paused;
}

.logo-item {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 2rem;
  background: rgba(20, 20, 30, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
  min-width: 140px;
  position: relative;
  --mouse-x: 50%;
  --mouse-y: 50%;
}

.white-mode .logo-item {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.logo-item:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 0 10px 30px rgba(var(--first-color), 0.2);
}

.logo-icon {
  width: 64px;
  height: 64px;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all 0.3s ease;
}

.logo-item:hover .logo-icon {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.1);
}

.logo-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-color);
  text-align: center;
  transition: color 0.3s ease;
}

.logo-item:hover .logo-name {
  color: var(--title-color);
}

/* Spotlight effect on individual logo items */
.logo-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mouse-x) var(--mouse-y),
    rgba(255, 255, 255, 0.2),
    transparent 60%
  );
  border-radius: 1rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.logo-item:hover::before {
  opacity: 1;
}

/* Highlighted (clicked) state */
.logo-item.highlighted {
  transform: translateY(-10px) scale(1.15);
  box-shadow: 0 15px 40px rgba(var(--first-color), 0.5);
  border-color: var(--first-color);
  z-index: 10;
  position: relative;
}

.logo-item.highlighted .logo-icon {
  filter: grayscale(0%) drop-shadow(0 0 20px rgba(var(--first-color), 0.6)) !important;
  opacity: 1 !important;
  transform: scale(1.2);
}

.logo-item.highlighted .logo-name {
  color: var(--first-color);
  font-weight: 700;
}

/* Make highlighted logo exempt from spotlight darkening */
.logo-item.highlighted::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: transparent;
  z-index: 5;
  border-radius: 1rem;
  pointer-events: none;
}

/* Global spotlight overlay */
.logo-spotlight-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 3;
  backdrop-filter: grayscale(1) brightness(0.85);
  -webkit-backdrop-filter: grayscale(1) brightness(0.85);
  background: transparent;
  mask-image: radial-gradient(
    circle var(--r) at var(--x) var(--y),
    transparent 0%,
    transparent 20%,
    rgba(0, 0, 0, 0.15) 40%,
    rgba(0, 0, 0, 0.35) 60%,
    rgba(0, 0, 0, 0.6) 80%,
    rgb(0, 0, 0) 100%
  );
  -webkit-mask-image: radial-gradient(
    circle var(--r) at var(--x) var(--y),
    transparent 0%,
    transparent 20%,
    rgba(0, 0, 0, 0.15) 40%,
    rgba(0, 0, 0, 0.35) 60%,
    rgba(0, 0, 0, 0.6) 80%,
    rgb(0, 0, 0) 100%
  );
}

.logo-spotlight-fade {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
  backdrop-filter: grayscale(1) brightness(0.85);
  -webkit-backdrop-filter: grayscale(1) brightness(0.85);
  background: transparent;
  mask-image: radial-gradient(
    circle var(--r) at var(--x) var(--y),
    rgb(0, 0, 0) 0%,
    rgb(0, 0, 0) 20%,
    rgba(0, 0, 0, 0.85) 40%,
    rgba(0, 0, 0, 0.65) 60%,
    rgba(0, 0, 0, 0.4) 80%,
    transparent 100%
  );
  -webkit-mask-image: radial-gradient(
    circle var(--r) at var(--x) var(--y),
    rgb(0, 0, 0) 0%,
    rgb(0, 0, 0) 20%,
    rgba(0, 0, 0, 0.85) 40%,
    rgba(0, 0, 0, 0.65) 60%,
    rgba(0, 0, 0, 0.4) 80%,
    transparent 100%
  );
  opacity: 1;
  transition: opacity 0.25s ease;
}

/* Pixel-perfect infinite scroll animation */
@keyframes scrollPixelPerfect {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(var(--track-width), 0, 0);
  }
}

/* Fallback percentage-based animation */
@keyframes scroll {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  .logo-loop-track {
    animation: none;
  }

  .logo-loop-track.paused {
    animation: none;
  }
}

/* Mobile tap state - logos only show color when tapped */
@media (hover: none) and (pointer: coarse) {
  /* Completely hide spotlight overlays on touch devices */
  .logo-spotlight-overlay,
  .logo-spotlight-fade {
    display: none !important;
  }

  /* Disable individual card spotlight effect */
  .logo-item::before {
    display: none !important;
  }

  /* Keep logos fully grayscale on mobile by default */
  .logo-icon {
    filter: grayscale(100%) !important;
    opacity: 0.7 !important;
  }

  /* Remove hover effects on touch devices */
  .logo-item:hover {
    transform: none !important;
    box-shadow: none !important;
  }

  .logo-item:hover .logo-icon {
    filter: grayscale(100%) !important;
    opacity: 0.7 !important;
    transform: none !important;
  }

  .logo-item:hover .logo-name {
    color: var(--text-color) !important;
  }

  /* When tapped/highlighted, show full color */
  .logo-item.highlighted {
    transform: translateY(-5px) scale(1.1) !important;
    box-shadow: 0 15px 40px rgba(var(--first-color), 0.5) !important;
    border-color: var(--first-color) !important;
  }

  .logo-item.highlighted .logo-icon {
    filter: grayscale(0%) drop-shadow(0 0 20px rgba(var(--first-color), 0.6)) !important;
    opacity: 1 !important;
    transform: scale(1.15) !important;
  }

  .logo-item.highlighted .logo-name {
    color: var(--first-color) !important;
    font-weight: 700 !important;
  }
}

/* Responsive */
@media screen and (max-width: 768px) {
  /* Force disable spotlight on all mobile screens */
  .logo-spotlight-overlay,
  .logo-spotlight-fade {
    display: none !important;
  }

  .logo-item::before {
    display: none !important;
  }

  .logo-loop-track {
    gap: 2rem;
  }

  .logo-item {
    min-width: 100px;
    padding: 1rem 1.5rem;
  }

  .logo-icon {
    width: 48px;
    height: 48px;
    filter: grayscale(100%) !important;
    opacity: 0.7 !important;
  }

  .logo-item:hover .logo-icon {
    filter: grayscale(100%) !important;
    opacity: 0.7 !important;
    transform: none !important;
  }

  .logo-item.highlighted .logo-icon {
    filter: grayscale(0%) drop-shadow(0 0 20px rgba(var(--first-color), 0.6)) !important;
    opacity: 1 !important;
    transform: scale(1.15) !important;
  }

  .logo-name {
    font-size: 0.75rem;
  }
}