/* ============================================================
   STV ELECTROPATHY CLINIC — animations.css
   Scroll-triggered, hover, and page-load animations
   ============================================================ */

/* ── FADE UP (IntersectionObserver) ── */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .65s cubic-bezier(.22,1,.36,1),
              transform .65s cubic-bezier(.22,1,.36,1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* Stagger delays for grid children */
.grid .fade-up:nth-child(1) { transition-delay: 0s; }
.grid .fade-up:nth-child(2) { transition-delay: .08s; }
.grid .fade-up:nth-child(3) { transition-delay: .16s; }
.grid .fade-up:nth-child(4) { transition-delay: .24s; }
.grid .fade-up:nth-child(5) { transition-delay: .32s; }
.grid .fade-up:nth-child(6) { transition-delay: .40s; }

/* ── FADE IN ── */
.fade-in {
  opacity: 0;
  transition: opacity .6s cubic-bezier(.22,1,.36,1);
}
.fade-in.visible { opacity: 1; }

/* ── SLIDE IN FROM LEFT ── */
.slide-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity .6s cubic-bezier(.22,1,.36,1),
              transform .6s cubic-bezier(.22,1,.36,1);
}
.slide-left.visible { opacity: 1; transform: translateX(0); }

/* ── SLIDE IN FROM RIGHT ── */
.slide-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity .6s cubic-bezier(.22,1,.36,1),
              transform .6s cubic-bezier(.22,1,.36,1);
}
.slide-right.visible { opacity: 1; transform: translateX(0); }

/* ── SCALE IN ── */
.scale-in {
  opacity: 0;
  transform: scale(.92);
  transition: opacity .5s cubic-bezier(.22,1,.36,1),
              transform .5s cubic-bezier(.22,1,.36,1);
}
.scale-in.visible { opacity: 1; transform: scale(1); }

/* ── HERO ELEMENTS ── */
.hero-text-in {
  animation: heroTextIn .9s cubic-bezier(.22,1,.36,1) both;
}
.hero-text-in:nth-child(2) { animation-delay: .12s; }
.hero-text-in:nth-child(3) { animation-delay: .22s; }
.hero-text-in:nth-child(4) { animation-delay: .32s; }
@keyframes heroTextIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── HERO ORB FLOAT ── */
.hero__orb-float {
  animation: orbFloat 8s ease-in-out infinite;
}
@keyframes orbFloat {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-20px) scale(1.02); }
}

/* ── WHATSAPP PULSE ── */
@keyframes wa-pulse {
  0%,100% { box-shadow: 0 4px 20px rgba(37,211,102,.4), 0 0 0 0 rgba(37,211,102,.3); }
  50%      { box-shadow: 0 4px 20px rgba(37,211,102,.4), 0 0 0 12px rgba(37,211,102,0); }
}

/* ── BADGE PULSE (Live indicator) ── */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}
.pulse-dot { animation: pulse-dot 2s ease-in-out infinite; }

/* ── COUNTER (JS-powered) ── */
.counter-num { transition: none; }

/* ── STAT NUMBER COUNT UP ── */
.stat-counting {
  display: inline-block;
  animation: statPop .4s cubic-bezier(.22,1,.36,1);
}
@keyframes statPop {
  from { transform: scale(.8); opacity: .5; }
  to   { transform: scale(1); opacity: 1; }
}

/* ── NAV LINK UNDERLINE ── */
.nav-link::after {
  content: '';
  display: block;
  width: 0; height: 2px;
  background: var(--clr-jade);
  border-radius: 2px;
  margin-top: 2px;
  transition: width .25s cubic-bezier(.22,1,.36,1);
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }

/* ── CARD SHIMMER (loading placeholder) ── */
.shimmer {
  background: linear-gradient(90deg, var(--clr-sage) 0%, var(--clr-sage-mid) 50%, var(--clr-sage) 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  from { background-position: -200% 0; }
  to   { background-position: 200% 0; }
}

/* ── HERO DOT GRID ── */
.hero__dot-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(rgba(255,255,255,.1) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: .4;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 0%, transparent 100%);
}

/* ── PROGRESS BAR ── */
.progress-bar {
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--clr-sage-mid);
  overflow: hidden;
  margin: 8px 0;
}
.progress-bar__fill {
  height: 100%;
  background: var(--grad-emerald);
  border-radius: var(--radius-pill);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .8s cubic-bezier(.22,1,.36,1);
}
.progress-bar__fill.animated { transform: scaleX(1); }

/* ── TOAST NOTIFICATION ── */
.toast {
  position: fixed; bottom: 96px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: var(--clr-forest); color: #fff;
  padding: 14px 24px; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 600;
  box-shadow: var(--shadow-lg); z-index: 9999;
  opacity: 0; transition: all .35s cubic-bezier(.22,1,.36,1);
  display: flex; align-items: center; gap: 10px;
  white-space: nowrap; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast--success { background: var(--clr-emerald); }
.toast--error { background: var(--clr-danger); }

/* ── DROPDOWN ANIMATION ── */
.dropdown {
  animation: none;
}
.nav-item:hover .dropdown {
  animation: dropIn .2s cubic-bezier(.22,1,.36,1) both;
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── MOBILE NAV SLIDE ── */
.mobile-nav { transition: opacity .3s ease; }
.mobile-nav:not(.open) { pointer-events: none; }

/* ── FAQ ACCORDION ── */
.faq-answer {
  transition: max-height .38s cubic-bezier(.22,1,.36,1),
              padding .22s ease, opacity .28s ease;
  opacity: 0;
}
.faq-answer.open { opacity: 1; }

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  .fade-up, .fade-in, .slide-left, .slide-right, .scale-in {
    opacity: 1; transform: none; transition: none;
  }
  .hero-text-in { animation: none; }
  .hero__orb-float { animation: none; }
  .wa-pulse { animation: none; }
  .progress-bar__fill { transition: none; }
  .toast { transition: none; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}