/* ============================================================
   REVLINE — animations.css
   Keyframes · scroll reveals · hover · glow · loaders
   ============================================================ */


/* ============================================================
   KEYFRAMES
   ============================================================ */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(34px); } to { opacity: 1; transform: none; } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-34px); } to { opacity: 1; transform: none; } }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-44px); } to { opacity: 1; transform: none; } }
@keyframes fadeInRight { from { opacity: 0; transform: translateX(44px); } to { opacity: 1; transform: none; } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.92); } to { opacity: 1; transform: scale(1); } }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.85; } }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 16px var(--red-glow-soft); }
  50% { box-shadow: 0 0 40px var(--red-glow); }
}
@keyframes glowText {
  0%, 100% { text-shadow: 0 0 14px var(--red-glow-soft); }
  50% { text-shadow: 0 0 34px var(--red-glow); }
}

@keyframes heroPulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.1); }
}
@keyframes scrollWheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

@keyframes shimmer { 0% { background-position: -800px 0; } 100% { background-position: 800px 0; } }

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


/* ============================================================
   SCROLL REVEAL (IntersectionObserver adds .in)
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity var(--t-smooth), transform var(--t-smooth);
  will-change: opacity, transform;
}
[data-reveal="left"]  { transform: translateX(-48px); }
[data-reveal="right"] { transform: translateX(48px); }
[data-reveal="scale"] { transform: scale(0.92); }
[data-reveal="fade"]  { transform: none; }

[data-reveal].in { opacity: 1; transform: none; }

/* Stagger delays */
[data-delay="1"] { transition-delay: 80ms; }
[data-delay="2"] { transition-delay: 160ms; }
[data-delay="3"] { transition-delay: 240ms; }
[data-delay="4"] { transition-delay: 320ms; }
[data-delay="5"] { transition-delay: 400ms; }
[data-delay="6"] { transition-delay: 480ms; }


/* ============================================================
   HOVER UTILITIES
   ============================================================ */
.hover-lift { transition: transform var(--t-base), box-shadow var(--t-base); }
.hover-lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.hover-glow { transition: box-shadow var(--t-base); }
.hover-glow:hover { box-shadow: var(--glow-red-lg); }

.glow-loop { animation: glowPulse 2.6s ease-in-out infinite; }
.float-loop { animation: float 4s ease-in-out infinite; }
.text-glow-loop { animation: glowText 3s ease-in-out infinite; }


/* ============================================================
   PAGE LOADER
   ============================================================ */
.loader {
  position: fixed; inset: 0; z-index: var(--z-loader);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--sp-6);
  background: var(--carbon);
  transition: opacity var(--t-slow), visibility var(--t-slow);
}
.loader.hidden { opacity: 0; visibility: hidden; }
.loader__logo {
  width: 88px; height: 88px; border-radius: 50%;
  animation: pulse 1.4s ease-in-out infinite;
  filter: drop-shadow(0 0 20px var(--red-glow));
}
.loader__bar { width: 180px; height: 3px; border-radius: var(--r-pill); background: var(--graphite-lighter); overflow: hidden; }
.loader__bar::after {
  content: ''; display: block; width: 40%; height: 100%;
  background: var(--grad-red); border-radius: var(--r-pill);
  animation: loaderBar 1.1s ease-in-out infinite;
}
@keyframes loaderBar {
  0% { transform: translateX(-120%); }
  100% { transform: translateX(360%); }
}

/* Spinner */
.spinner {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.25); border-top-color: var(--white);
  animation: spin 0.7s linear infinite;
}

/* Skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--graphite-light) 25%, var(--graphite-lighter) 50%, var(--graphite-light) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--r-md);
}


/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}