/* Shared motion utilities for Flowtive static pages.
   Keep lightweight: pure CSS + a small JS observer (motion.js). */

:root {
  --motion-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --motion-ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --motion-dur-fast: 160ms;
  --motion-dur: 280ms;
  --motion-dur-slow: 600ms;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}

/* Scroll reveal (IntersectionObserver adds .is-inview) */
[data-motion="reveal"] {
  opacity: 0;
  transform: translateY(14px) scale(0.99);
  filter: blur(6px);
  transition:
    opacity var(--motion-dur-slow) var(--motion-ease-out),
    transform var(--motion-dur-slow) var(--motion-ease-out),
    filter var(--motion-dur-slow) var(--motion-ease-out);
  will-change: transform, opacity, filter;
}

[data-motion="reveal"].is-inview {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

/* Micro-interactions */
.hover-lift {
  transition: transform var(--motion-dur) var(--motion-ease-out), box-shadow var(--motion-dur) var(--motion-ease-out);
  will-change: transform;
}

.hover-lift:hover {
  transform: translateY(-4px);
}

.pressable {
  transition: transform var(--motion-dur-fast) var(--motion-ease-out);
  will-change: transform;
}

.pressable:active {
  transform: translateY(1px) scale(0.99);
}

/* Subtle shine on primary CTAs */
.btn-shine {
  position: relative;
  overflow: hidden;
}

.btn-shine::after {
  content: "";
  position: absolute;
  top: -40%;
  left: -60%;
  width: 60%;
  height: 180%;
  transform: rotate(18deg) translateX(-30%);
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.28) 45%,
    rgba(255, 255, 255, 0) 100%
  );
  opacity: 0;
  transition: opacity var(--motion-dur-fast) var(--motion-ease-out);
}

.btn-shine:hover::after {
  opacity: 1;
  animation: btn-shine-sweep 900ms var(--motion-ease-out) 1;
}

@keyframes btn-shine-sweep {
  from {
    transform: rotate(18deg) translateX(-65%);
  }
  to {
    transform: rotate(18deg) translateX(220%);
  }
}

/* Slight 3D tilt for cards (JS sets --rx/--ry on hover) */
.tilt-3d {
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  transition: transform var(--motion-dur) var(--motion-ease-out);
  transform-style: preserve-3d;
  will-change: transform;
}

/* Animated gradient text helper */
.gradient-animate {
  background-size: 200% 200%;
  animation: gradient-shift 6s var(--motion-ease-out) infinite;
}

@keyframes gradient-shift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}