/* ==========================================================================
   THG MOTO MUSEUM - Scroll & Interaction Animations
   Intersection Observer reveals, parallax, speedometer dials, mechanical glows
   ========================================================================== */

/* Keyframe Animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.15);
  }
}

@keyframes ping {
  75%, 100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

@keyframes scrollWheel {
  0% {
    opacity: 1;
    transform: translate(-50%, 0);
  }
  80% {
    opacity: 0;
    transform: translate(-50%, 14px);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, 0);
  }
}

@keyframes floatSlow {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}

@keyframes revUp {
  0% {
    transform: rotate(-120deg);
  }
  70% {
    transform: rotate(60deg);
  }
  85% {
    transform: rotate(40deg);
  }
  100% {
    transform: rotate(50deg);
  }
}

@keyframes redGlowPulse {
  0%, 100% {
    box-shadow: 0 0 15px rgba(217, 4, 41, 0.3);
  }
  50% {
    box-shadow: 0 0 35px rgba(217, 4, 41, 0.7);
  }
}

/* Scroll Reveal Classes (Driven by IntersectionObserver) */
.reveal-fade,
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 0;
  will-change: transform, opacity;
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-fade {
  transform: translateY(0);
}

.reveal-up {
  transform: translateY(45px);
}

.reveal-left {
  transform: translateX(-50px);
}

.reveal-right {
  transform: translateX(50px);
}

.reveal-scale {
  transform: scale(0.92);
}

/* Active State when in view */
.revealed {
  opacity: 1 !important;
  transform: translate(0, 0) scale(1) !important;
}

/* Stagger Delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* Parallax Background Utility */
.parallax-bg {
  will-change: transform;
  transition: transform 0.1s linear;
}

/* Interactive Gauge Needle Animation */
.gauge-needle {
  transform-origin: bottom center;
  transition: transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gauge-card:hover .gauge-needle {
  transform: rotate(75deg);
}

/* Magnetic Hover effect on buttons */
.magnetic-btn {
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Cinematic Film Grain Overlay (Optional Subtle Texture) */
.film-grain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Ensure Hero content is immediately displayed on page load */
.hero-section .reveal-up,
.hero-section .reveal-fade,
.hero-section .reveal-left,
.hero-section .reveal-right {
  opacity: 1 !important;
  transform: none !important;
}