/* ==========================================================================
   Sistakaranaalu Community — Animations
   Pure CSS keyframes + lightweight scroll-reveal helpers.
   (AOS library handles most scroll reveals; these are custom extras.)
   ========================================================================== */

/* ---- Keyframes ---------------------------------------------------------- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes ripple-anim {
  to { transform: scale(2.6); opacity: 0; }
}

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

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-22px); }
}

@keyframes float-x {
  0%, 100% { transform: translateX(0); }
  50%      { transform: translateX(20px); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(111, 183, 236, 0.5); }
  50%      { box-shadow: 0 0 0 16px rgba(111, 183, 236, 0); }
}

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

@keyframes fade-up {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ---- Floating decorative shapes ----------------------------------------- */
.hero__shape--1 { animation: float-y 7s ease-in-out infinite; }
.hero__shape--2 { animation: float-x 9s ease-in-out infinite; }
.hero__shape--3 { animation: float-y 5.5s ease-in-out infinite; }

.float-icon { animation: float-y 4s ease-in-out infinite; }

/* ---- Animated gradient background --------------------------------------- */
.animated-gradient {
  background: linear-gradient(120deg, var(--color-maroon), var(--color-gold-dark), var(--color-maroon));
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
}

/* ---- Hover glow ---------------------------------------------------------- */
.hover-glow { transition: box-shadow var(--transition), transform var(--transition); }
.hover-glow:hover {
  box-shadow: 0 0 0 4px rgba(111, 183, 236, 0.18), var(--shadow-md);
  transform: translateY(-4px);
}

/* ---- Pulse (used on Join / Donate CTAs) --------------------------------- */
.pulse { animation: pulse-glow 2.4s infinite; }

/* ---- Glassmorphism panel ------------------------------------------------- */
.glass {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
}

/* ---- Custom scroll-reveal (fallback if AOS not loaded) ------------------ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-left  { opacity: 0; transform: translateX(-50px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-right { opacity: 0; transform: translateX(50px);  transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-scale { opacity: 0; transform: scale(0.9);        transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-zoom  { opacity: 0; transform: scale(1.1);        transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal-left.is-visible,
.reveal-right.is-visible,
.reveal-scale.is-visible,
.reveal-zoom.is-visible { opacity: 1; transform: none; }

/* ---- Image zoom helper --------------------------------------------------- */
.img-zoom { overflow: hidden; border-radius: var(--radius-md); }
.img-zoom img { transition: transform 0.6s ease; }
.img-zoom:hover img { transform: scale(1.08); }

/* ---- Underline link animation ------------------------------------------- */
.link-underline {
  position: relative;
  display: inline-block;
}
.link-underline::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 100%; height: 2px;
  background: var(--color-gold);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}
.link-underline:hover::after { transform: scaleX(1); transform-origin: left; }

/* ---- Respect 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;
  }
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .reveal-zoom { opacity: 1; transform: none; }
}