/* ================================================================
   ANIMATIONS.CSS — Keyframes, Scroll Fade-In, Hover FX
   IPTV Mate | IPTV Europe
   ================================================================ */

/* ── Scroll Fade-In Classes ──────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-left.visible { opacity: 1; transform: translateX(0); }

.fade-in-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-right.visible { opacity: 1; transform: translateX(0); }

/* Staggered children */
.stagger > *:nth-child(1) { transition-delay: 0.05s; }
.stagger > *:nth-child(2) { transition-delay: 0.12s; }
.stagger > *:nth-child(3) { transition-delay: 0.19s; }
.stagger > *:nth-child(4) { transition-delay: 0.26s; }
.stagger > *:nth-child(5) { transition-delay: 0.33s; }
.stagger > *:nth-child(6) { transition-delay: 0.40s; }

/* ── Keyframes ───────────────────────────────────────────────── */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 var(--accent-glow); }
  70%  { box-shadow: 0 0 0 14px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

@keyframes shimmer {
  0%   { background-position: -400px 0; }
  100% { background-position: 400px 0; }
}

@keyframes spin-slow {
  to { transform: rotate(360deg); }
}

@keyframes bounce-in {
  0%   { transform: scale(0.85); opacity: 0; }
  60%  { transform: scale(1.04); opacity: 1; }
  100% { transform: scale(1); }
}

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

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
  50%       { box-shadow: 0 0 40px rgba(59,130,246,0.4); }
}

@keyframes slide-up {
  from { transform: translateY(100%); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes count-up {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Applied Animations ──────────────────────────────────────── */
.hero-float-badge { animation: float 3s ease-in-out infinite; }

/* Gradient animated heading */
.gradient-text {
  background: linear-gradient(135deg, var(--accent), var(--purple), var(--emerald), var(--accent));
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 5s ease infinite;
}

/* Pulse CTA */
.btn-pulse { animation: pulse-ring 2s ease-out infinite; }

/* Glow card */
.glow-card { animation: glow-pulse 3s ease-in-out infinite; }

/* Shimmer loading state */
.shimmer {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 400px 100%;
  animation: shimmer 1.2s ease-in-out infinite;
}

/* ── Micro-interactions ──────────────────────────────────────── */

/* Nav link underline slide */
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px; left: var(--sp-16); right: var(--sp-16);
  height: 1.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-base);
}
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }

/* Icon bounce on hover */
.icon-bounce { transition: transform var(--transition-base); }
.icon-bounce:hover { transform: scale(1.15) rotate(-5deg); }

/* Card lift */
.lift { transition: transform var(--transition-base), box-shadow var(--transition-base); }
.lift:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

/* Progress bar */
.progress-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--purple));
  border-radius: var(--r-full);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1s ease;
}
.progress-bar.active { transform: scaleX(1); }

/* ── Scroll-to-top button ────────────────────────────────────── */
.scroll-top {
  position: fixed;
  bottom: var(--sp-24);
  right: var(--sp-24);
  width: 44px; height: 44px;
  border-radius: var(--r-full);
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 20px var(--accent-glow);
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition-base);
  z-index: 900;
  border: none;
}
.scroll-top.visible { opacity: 1; transform: translateY(0); }
.scroll-top:hover { background: var(--accent-dark); transform: translateY(-2px); }

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