/* ============================================================
   DR. KIZA SUNGURA — ANIMATIONS
   Scroll Reveal, Count-Up, Parallax, Carousel, Gallery Filter
   ============================================================ */

/* ══════════════════════════════════════════
   SCROLL REVEAL — [data-reveal]
   ══════════════════════════════════════════ */

[data-reveal] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--duration-slower) var(--ease-out-expo),
              transform var(--duration-slower) var(--ease-out-expo);
}

[data-reveal="left"] {
  transform: translateX(-32px) translateY(0);
}

[data-reveal="right"] {
  transform: translateX(32px) translateY(0);
}

[data-reveal="scale"] {
  transform: scale(0.95) translateY(0);
}

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

/* Stagger children */
[data-reveal="stagger"] > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

[data-reveal="stagger"].is-visible > *:nth-child(1)  { transition-delay: 0ms;   opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(2)  { transition-delay: 80ms;  opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(3)  { transition-delay: 160ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(4)  { transition-delay: 240ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(5)  { transition-delay: 320ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(6)  { transition-delay: 400ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(7)  { transition-delay: 480ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(8)  { transition-delay: 560ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(9)  { transition-delay: 640ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(10) { transition-delay: 720ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(11) { transition-delay: 800ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(12) { transition-delay: 880ms; opacity: 1; transform: none; }

/* ══════════════════════════════════════════
   WHATSAPP PULSE ANIMATION
   ══════════════════════════════════════════ */

@keyframes wa-pulse {
  0%   { transform: scale(1);   opacity: 0.6; }
  70%  { transform: scale(1.5); opacity: 0; }
  100% { transform: scale(1.5); opacity: 0; }
}

/* ══════════════════════════════════════════
   SCROLL INDICATOR — HERO
   ══════════════════════════════════════════ */

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  animation: scroll-bounce 2.5s ease-in-out infinite;
}

.scroll-indicator__line {
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, var(--color-copper), transparent);
  animation: scroll-line 2.5s ease-in-out infinite;
}

.scroll-indicator__label {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-copper);
  writing-mode: vertical-rl;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(10px); opacity: 0.6; }
}

@keyframes scroll-line {
  0%   { background-position: 0 0; }
  100% { background-position: 0 100%; }
}

/* ══════════════════════════════════════════
   COPPER UNDERLINE NAV — ACTIVE STATE
   ══════════════════════════════════════════ */

@keyframes underline-in {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ══════════════════════════════════════════
   HERO SECTION — INITIAL ENTRANCE
   ══════════════════════════════════════════ */

.hero-eyebrow-anim {
  opacity: 0;
  transform: translateY(12px);
  animation: fade-up var(--duration-slow) var(--ease-out-expo) 200ms forwards;
}

.hero-heading-anim {
  opacity: 0;
  transform: translateY(20px);
  animation: fade-up var(--duration-slower) var(--ease-out-expo) 400ms forwards;
}

.hero-sub-anim {
  opacity: 0;
  transform: translateY(16px);
  animation: fade-up var(--duration-slow) var(--ease-out-expo) 600ms forwards;
}

.hero-cta-anim {
  opacity: 0;
  transform: translateY(16px);
  animation: fade-up var(--duration-slow) var(--ease-out-expo) 800ms forwards;
}

.hero-scroll-anim {
  opacity: 0;
  animation: fade-in var(--duration-slow) var(--ease-standard) 1200ms forwards;
}

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

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

/* ══════════════════════════════════════════
   SHIMMER / SKELETON
   ══════════════════════════════════════════ */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-black-3) 25%,
    var(--color-black-4) 50%,
    var(--color-black-3) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.8s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ══════════════════════════════════════════
   MOBILE NAV OVERLAY
   ══════════════════════════════════════════ */

.nav__mobile {
  transition: opacity var(--duration-slow) var(--ease-standard);
}

/* Hamburger → X */
.nav__hamburger--open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger--open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav__hamburger--open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ══════════════════════════════════════════
   GALLERY FILTER TRANSITION
   ══════════════════════════════════════════ */

.gallery-item,
.gallery-placeholder {
  transition: opacity var(--duration-base) var(--ease-standard),
              transform var(--duration-base) var(--ease-standard);
}

.gallery-item.is-hidden,
.gallery-placeholder.is-hidden {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
}

/* ══════════════════════════════════════════
   HOVER GLOW — CARDS
   ══════════════════════════════════════════ */

.card-glass,
.treatment-card,
.service-card {
  will-change: transform, box-shadow;
}

/* ══════════════════════════════════════════
   EMERALD GLOW RADIAL (hero decoration)
   ══════════════════════════════════════════ */

.emerald-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.12), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

/* ══════════════════════════════════════════
   COPPER GRAIN (noise overlay on hero)
   ══════════════════════════════════════════ */

.hero-noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 256px 256px;
  opacity: 0.045;
  mix-blend-mode: overlay;
  z-index: 2;
}

/* ══════════════════════════════════════════
   COUNT-UP — state controlled by JS
   ══════════════════════════════════════════ */

.stat-number {
  /* JS sets the textContent incrementally */
  display: block;
}

/* ══════════════════════════════════════════
   PARALLAX HERO BG
   ══════════════════════════════════════════ */

.hero-bg {
  will-change: transform;
  transition: transform 0ms linear; /* set by JS */
}

/* ══════════════════════════════════════════
   FLOATING LEAF DECORATIONS
   ══════════════════════════════════════════ */

@keyframes float-slow {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-20px) rotate(5deg); }
}

@keyframes float-medium {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50%       { transform: translateY(-12px) rotate(-3deg); }
}

.float-slow   { animation: float-slow   6s ease-in-out infinite; }
.float-medium { animation: float-medium 4s ease-in-out infinite; }

/* ══════════════════════════════════════════
   CAROUSEL FADE
   ══════════════════════════════════════════ */

.carousel__track {
  transition: transform 600ms var(--ease-out-expo);
}

/* ══════════════════════════════════════════
   ADVANCED SCROLL REVEAL — CLIP-PATH
   ══════════════════════════════════════════ */

[data-reveal="clip-up"] {
  opacity: 1 !important;
  transform: none !important;
  clip-path: inset(0 0 100% 0);
  transition: clip-path var(--duration-slower) var(--ease-out-expo) !important;
}

[data-reveal="clip-up"].is-visible {
  clip-path: inset(0 0 0% 0);
}

/* ══════════════════════════════════════════
   STAGGER — EXTENDED (up to 18 children)
   ══════════════════════════════════════════ */

[data-reveal="stagger"].is-visible > *:nth-child(13) { transition-delay: 960ms;  opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(14) { transition-delay: 1040ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(15) { transition-delay: 1120ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(16) { transition-delay: 1200ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(17) { transition-delay: 1280ms; opacity: 1; transform: none; }
[data-reveal="stagger"].is-visible > *:nth-child(18) { transition-delay: 1360ms; opacity: 1; transform: none; }

/* ══════════════════════════════════════════
   GRADIENT TEXT ANIMATION
   ══════════════════════════════════════════ */

.gradient-text-animated {
  background: linear-gradient(
    90deg,
    var(--color-emerald) 0%,
    var(--color-copper)  50%,
    var(--color-emerald) 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 5s linear infinite;
}

@keyframes gradient-shift {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}

/* ══════════════════════════════════════════
   CARD ENTRANCE — SCALE + FADE
   ══════════════════════════════════════════ */

@keyframes card-enter {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: none; }
}

.card-enter {
  animation: card-enter var(--duration-slow) var(--ease-out-expo) forwards;
}

/* ══════════════════════════════════════════
   COPPER UNDERLINE — ANIMATED
   ══════════════════════════════════════════ */

.underline-copper {
  position: relative;
  display: inline-block;
}

.underline-copper::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-copper), transparent);
  transition: width 0.7s var(--ease-out-expo);
}

.is-visible .underline-copper::after,
.underline-copper:hover::after {
  width: 100%;
}

/* ══════════════════════════════════════════
   PULSING DOT — ONLINE STATUS
   ══════════════════════════════════════════ */

@keyframes online-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16,185,129,0.5); }
  50%       { box-shadow: 0 0 0 6px rgba(16,185,129,0); }
}

.online-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-emerald);
  animation: online-pulse 2s ease-in-out infinite;
}

/* ══════════════════════════════════════════
   NUMBER COUNT-UP — VISUAL DECORATION
   ══════════════════════════════════════════ */

@keyframes count-up-flash {
  0%   { color: var(--color-emerald-light); }
  100% { color: var(--color-emerald); }
}

.stat-number.animating {
  animation: count-up-flash 2s ease-out forwards;
}

/* ══════════════════════════════════════════
   prefers-reduced-motion — DISABLE ALL
   ══════════════════════════════════════════ */

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

  [data-reveal],
  [data-reveal="left"],
  [data-reveal="right"],
  [data-reveal="scale"] {
    opacity: 1;
    transform: none;
  }

  [data-reveal="stagger"] > * {
    opacity: 1;
    transform: none;
    transition-delay: 0ms !important;
  }

  .hero-eyebrow-anim,
  .hero-heading-anim,
  .hero-sub-anim,
  .hero-cta-anim,
  .hero-scroll-anim {
    opacity: 1;
    transform: none;
    animation: none;
  }

  .scroll-indicator {
    animation: none;
  }

  .wa-float__pulse {
    animation: none;
  }

  .skeleton {
    animation: none;
    background: var(--color-black-3);
  }

  .float-slow,
  .float-medium {
    animation: none;
  }

  .nav__mobile-link {
    transform: none !important;
    opacity: 1 !important;
  }
}