/* ========================================
   Interactive Effects - Phase 6 Optimized
   3D transforms, glares, and particle effects
   GPU-accelerated with dynamic will-change
   ======================================== */

/* Card 3D Tilt Effect */
.member-card {
  transform-style: preserve-3d;
  transition: transform 0.1s ease-out;
  position: relative;
  /* GPU acceleration - will-change added dynamically via JS */
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  /* Prioritize vertical scrolling on touch devices */
  touch-action: pan-y;
}

.card-glare {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  transition: background 0.1s ease-out;
  /* GPU acceleration */
  transform: translateZ(0);
}

/* Cursor Trail Particles */
.cursor-particle {
  position: fixed;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transition: transform 0.1s ease-out;
  /* will-change managed dynamically - only during animation */
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Magnetic Button Effect */
.btn-magnetic {
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  /* will-change added dynamically via JS when hovering */
  backface-visibility: hidden;
  transform: translateZ(0);
}

/* Burst Particle Effect */
.burst-particle {
  position: fixed;
  width: 6px;
  height: 6px;
  background: var(--accent-pink);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  animation: burst 0.6s ease-out forwards;
  transform: translateZ(0);
}

@keyframes burst {
  0% {
    transform: translate(0, 0) scale(1) translateZ(0);
    opacity: 1;
  }
  100% {
    transform: translate(
      var(--burst-x, 0),
      var(--burst-y, 0)
    ) scale(0) translateZ(0);
    opacity: 0;
  }
}

/* Focus styles for accessibility */
.member-card:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 4px;
}

.member-card:focus:not(:focus-visible) {
  outline: none;
}

.member-card:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 4px;
}

/* Keyboard navigation support */
.btn-magnetic:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* Disable on mobile */
@media (max-width: 768px) {
  .cursor-particle,
  .card-glare {
    display: none !important;
  }

  .member-card {
    transform-style: flat !important;
    transform: none !important;
  }

  /* Optimize for mobile performance */
  .btn-magnetic {
    transform: none !important;
  }
}

/* Tablet optimization */
@media (min-width: 769px) and (max-width: 1024px) {
  /* Reduce effect intensity on tablets */
  .member-card {
    transition: transform 0.15s ease-out;
  }
}

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

  .member-card,
  .btn-magnetic {
    transform: none !important;
    transition: none !important;
  }

  .cursor-particle,
  .burst-particle,
  .card-glare {
    display: none !important;
  }

  /* Keep essential transitions but instant */
  .member-card:focus {
    transition: outline 0s;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .member-card:focus {
    outline-width: 3px;
  }

  .card-glare {
    /* Reduce glare in high contrast mode */
    opacity: 0.5;
  }
}

/* Dark mode optimizations */
[data-theme="dark"] .card-glare {
  /* Slightly more visible in dark mode */
  filter: brightness(1.2);
}

/* Performance: Contain layout changes */
.member-card,
.cursor-particle,
.burst-particle {
  contain: layout style paint;
}

/* Prevent text selection during interaction */
.member-card.tilt-active {
  user-select: none;
  -webkit-user-select: none;
}