/**
 * Particle Hero Animation Styles
 * DeepArabic.AI Landing Page
 */

/* ─── Animation Container ────────────────────────────────────────── */
.particle-hero {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
  background: #ffffff;
}

/* ─── Three.js Canvas ─────────────────────────────────────────── */
.particle-hero__canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

/* ─── Vignette Overlay ────────────────────────────────────────── */
.particle-hero__vignette {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(255,255,255,0.8) 100%);
  pointer-events: none;
  z-index: 3;
}

/* ─── Subtle Flicker Animation ───────────────────────────────── */
@keyframes crt-flicker {
  0%, 100% { opacity: 1; }
  92% { opacity: 1; }
  93% { opacity: 0.97; }
  94% { opacity: 1; }
}

.particle-hero__canvas {
  animation: crt-flicker 4s infinite;
}

/* ─── Glitch Effect on Transition ────────────────────────────── */
@keyframes glitch {
  0%, 100% {
    transform: translateX(0);
    filter: none;
  }
  10% {
    transform: translateX(-1px);
    filter: hue-rotate(5deg);
  }
  20% {
    transform: translateX(1px);
    filter: hue-rotate(-5deg);
  }
  30% {
    transform: translateX(-1px);
  }
  40% {
    transform: translateX(1px);
  }
  50% {
    transform: translateX(0);
    filter: none;
  }
}

.particle-hero--glitch .particle-hero__canvas {
  animation: glitch 0.2s ease-in-out, crt-flicker 4s infinite;
}

/* ─── Respect Reduced Motion Preference ──────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .particle-hero__canvas {
    animation: none;
  }

  .particle-hero--glitch .particle-hero__canvas {
    animation: none;
  }
}

/* ─── Fallback State (No WebGL) ───────────────────────────────── */
.particle-hero--fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f5f5f5 0%, #ffffff 100%);
}

.particle-hero--fallback .particle-hero__canvas,
.particle-hero--fallback .particle-hero__vignette {
  display: none;
}

.particle-hero__fallback-image {
  display: none;
  width: 10rem;
  height: 10rem;
  image-rendering: pixelated;
  animation: pixel-pulse 2s ease-in-out infinite;
}

.particle-hero--fallback .particle-hero__fallback-image {
  display: block;
}

@keyframes pixel-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ─── Mobile Optimizations ────────────────────────────────────── */
@media (max-width: 768px) {
  .particle-hero {
    height: 300px;
  }
}

/* ─── Large Screens ───────────────────────────────────────────── */
@media (min-width: 1024px) {
  .particle-hero {
    height: 450px;
  }
}