/* ===== KEYFRAMES ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(.88); }
  to   { opacity: 1; transform: scale(1); }
}

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

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

@keyframes scrollDot {
  0%   { opacity: 1; transform: translateY(0); }
  70%  { opacity: 0; transform: translateY(12px); }
  71%  { opacity: 0; transform: translateY(0); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.04); }
}

@keyframes shimmer {
  from { background-position: -200% center; }
  to   { background-position: 200% center; }
}


/* ===== SCROLL REVEAL BASE STATE ===== */
/* Elements start hidden; JS adds .is-visible to trigger animation */
@media (prefers-reduced-motion: no-preference) {
  .reveal-up {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity var(--dur-slow) var(--ease-out),
                transform var(--dur-slow) var(--ease-out);
  }

  .reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity var(--dur-slow) var(--ease-out),
                transform var(--dur-slow) var(--ease-out);
  }

  .reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity var(--dur-slow) var(--ease-out),
                transform var(--dur-slow) var(--ease-out);
  }

  .reveal-scale {
    opacity: 0;
    transform: scale(.92);
    transition: opacity var(--dur-slow) var(--ease-out),
                transform var(--dur-slow) var(--ease-out);
  }

  /* Stagger via :nth-child position (no inline styles in templates).
     Applies inside any grid/list of reveal items, up to 8 children. */
  .reveal-up:nth-child(1),
  .reveal-left:nth-child(1),
  .reveal-right:nth-child(1),
  .reveal-scale:nth-child(1) { transition-delay: 0ms; }

  .reveal-up:nth-child(2),
  .reveal-left:nth-child(2),
  .reveal-right:nth-child(2),
  .reveal-scale:nth-child(2) { transition-delay: 80ms; }

  .reveal-up:nth-child(3),
  .reveal-left:nth-child(3),
  .reveal-right:nth-child(3),
  .reveal-scale:nth-child(3) { transition-delay: 160ms; }

  .reveal-up:nth-child(4),
  .reveal-left:nth-child(4),
  .reveal-right:nth-child(4),
  .reveal-scale:nth-child(4) { transition-delay: 240ms; }

  .reveal-up:nth-child(5),
  .reveal-left:nth-child(5),
  .reveal-right:nth-child(5),
  .reveal-scale:nth-child(5) { transition-delay: 320ms; }

  .reveal-up:nth-child(6),
  .reveal-left:nth-child(6),
  .reveal-right:nth-child(6),
  .reveal-scale:nth-child(6) { transition-delay: 400ms; }

  .reveal-up:nth-child(7),
  .reveal-left:nth-child(7),
  .reveal-right:nth-child(7),
  .reveal-scale:nth-child(7) { transition-delay: 480ms; }

  .reveal-up:nth-child(n+8),
  .reveal-left:nth-child(n+8),
  .reveal-right:nth-child(n+8),
  .reveal-scale:nth-child(n+8) { transition-delay: 560ms; }

  /* Visible state */
  .reveal-up.is-visible,
  .reveal-left.is-visible,
  .reveal-right.is-visible,
  .reveal-scale.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* Users who prefer reduced motion get content immediately */
@media (prefers-reduced-motion: reduce) {
  .reveal-up, .reveal-left, .reveal-right, .reveal-scale {
    opacity: 1;
    transform: none;
    transition: none;
  }
}


/* ===== HEADER SHRINK ===== */
.site-header {
  transition: padding var(--dur) var(--ease), box-shadow var(--dur) var(--ease);

  &.is-scrolled {
    box-shadow: 0 4px 24px rgba(0,0,0,.1);
  }
}


/* ===== HERO BG PARALLAX ===== */
@media (prefers-reduced-motion: no-preference) {
  .hero__bg {
    will-change: transform;
    transition: transform 12s linear;
  }
}


/* ===== CARD HOVER SHIMMER ===== */
.service-card,
.advantage-card,
.portfolio-card,
.guarantee-card {
  position: relative;
  overflow: hidden;

  &::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
      105deg,
      transparent 20%,
      rgba(255,255,255,.06) 50%,
      transparent 80%
    );
    background-size: 200% 100%;
    opacity: 0;
    transition: opacity var(--dur) var(--ease);
    pointer-events: none;
  }

  &:hover::after {
    opacity: 1;
    animation: shimmer 1.2s var(--ease) 1;
  }
}


/* ===== BUTTON PULSE (CTA highlight) ===== */
@media (prefers-reduced-motion: no-preference) {
  .hero__form-btn {
    animation: pulse 3s ease-in-out 2s infinite;

    &:hover { animation: none; }
  }
}


/* ===== COUNTER NUMBER ===== */
.js-counter {
  display: inline-block;
  transition: transform var(--dur-fast) var(--ease-spring);

  &.is-counting { transform: scale(1.08); }
}


/* ===== FORM SUCCESS ANIMATION ===== */
.form-success {
  animation: scaleIn var(--dur-slow) var(--ease-spring);
}

.form-success__icon svg {
  animation: scaleIn var(--dur-slow) var(--ease-spring) .1s both;
}


/* ===== REVIEWS SLIDER ===== */
.reviews__track {
  will-change: transform;
}


/* ===== MODAL ENTRY ===== */
@media (prefers-reduced-motion: no-preference) {
  .modal {
    animation: none;
  }

  .modal-overlay.is-open .modal {
    animation: fadeInUp var(--dur-slow) var(--ease-spring);
  }
}


/* ===== SCROLL-TO-TOP ===== */
.scroll-top {
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease),
              transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}


/* ===== NAV LINK UNDERLINE ===== */
.site-nav__link {
  position: relative;
  overflow: hidden;

  &::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--clr-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--dur) var(--ease);
  }

  &:hover::after, &.active::after {
    transform: scaleX(1);
    transform-origin: left;
  }
}


/* ===== SECTION NUMBER LABELS ===== */
.stage-item__number {
  transition: transform var(--dur-slow) var(--ease-spring),
              box-shadow var(--dur-slow) var(--ease);

  .stage-item:hover & {
    transform: scale(1.12);
    box-shadow: 0 6px 20px rgba(232,66,10,.4);
  }
}


/* ===== PORTFOLIO FILTER TRANSITION ===== */
.portfolio-card {
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease),
              box-shadow var(--dur-slow) var(--ease);

  &[data-hidden] {
    opacity: 0;
    transform: scale(.95);
    pointer-events: none;
    position: absolute;
    visibility: hidden;
  }
}


/* ===========================================================
   PREMIUM DESKTOP ANIMATIONS (1024px+)
   =========================================================== */
@media (min-width: 1024px) and (prefers-reduced-motion: no-preference) {

  /* --- Text clip-path reveal --- */
  .section__title {
    clip-path: inset(0 0 100% 0);
    transition: clip-path var(--dur-reveal, 800ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }

  .section__title.is-visible,
  .is-visible .section__title {
    clip-path: inset(0 0 0 0);
  }

  /* Override standard reveals with premium timing */
  .reveal-up {
    transition-duration: var(--dur-reveal, 800ms);
    transition-timing-function: var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }

  .reveal-left,
  .reveal-right {
    transition-duration: var(--dur-reveal, 800ms);
    transition-timing-function: var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }

  /* Desktop premium stagger: 120ms increments (no inline --delay) */
  .reveal-up:nth-child(1),
  .reveal-left:nth-child(1),
  .reveal-right:nth-child(1) { transition-delay: 0ms; }

  .reveal-up:nth-child(2),
  .reveal-left:nth-child(2),
  .reveal-right:nth-child(2) { transition-delay: 120ms; }

  .reveal-up:nth-child(3),
  .reveal-left:nth-child(3),
  .reveal-right:nth-child(3) { transition-delay: 240ms; }

  .reveal-up:nth-child(4),
  .reveal-left:nth-child(4),
  .reveal-right:nth-child(4) { transition-delay: 360ms; }

  .reveal-up:nth-child(5),
  .reveal-left:nth-child(5),
  .reveal-right:nth-child(5) { transition-delay: 480ms; }

  .reveal-up:nth-child(6),
  .reveal-left:nth-child(6),
  .reveal-right:nth-child(6) { transition-delay: 600ms; }

  .reveal-up:nth-child(7),
  .reveal-left:nth-child(7),
  .reveal-right:nth-child(7) { transition-delay: 720ms; }

  .reveal-up:nth-child(n+8),
  .reveal-left:nth-child(n+8),
  .reveal-right:nth-child(n+8) { transition-delay: 840ms; }


  /* --- Smooth morph on card hovers --- */
  .advantage-card,
  .service-card,
  .guarantee-card {
    transition: all var(--dur-premium, 600ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }

  /* --- Counter blur-scale reveal --- */
  .js-counter {
    filter: blur(8px);
    transform: scale(2);
    opacity: 0;
    transition: filter 1s var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1)),
                transform 1s var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1)),
                opacity 0.6s ease;
  }

  .js-counter.is-visible,
  .is-visible .js-counter {
    filter: blur(0);
    transform: scale(1);
    opacity: 1;
  }

  .js-counter.is-counting {
    transform: scale(1.05);
    filter: blur(0);
  }


  /* --- Hero CTA override: no pulse, smooth glow instead --- */
  .hero__form-btn {
    animation: none;
    transition: all var(--dur-premium, 600ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }


  /* --- Portfolio image zoom slowed --- */
  .portfolio-card__img {
    transition: transform 1.2s var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }

  .portfolio-card:hover .portfolio-card__img {
    transform: scale(1.08);
  }


  /* --- Magnetic button base (JS moves via CSS custom properties) --- */
  .btn--primary {
    transition: transform var(--dur-premium, 600ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1)),
                box-shadow var(--dur-premium, 600ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1)),
                background-color var(--dur) var(--ease);
    will-change: transform;
  }


  /* --- Service card horizontal slide-in --- */
  .services .reveal-up {
    opacity: 0;
    transform: translateX(-60px);
  }

  .services .reveal-up.is-visible {
    opacity: 1;
    transform: translateX(0);
  }


  /* --- Shimmer: disable card shimmer (no longer boxed cards) --- */
  .service-card::after,
  .advantage-card::after,
  .guarantee-card::after {
    display: none;
  }


  /* --- Stage number enhanced hover --- */
  .stage-item__number {
    transition: transform var(--dur-premium, 600ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1)),
                box-shadow var(--dur-premium, 600ms) var(--ease-premium, cubic-bezier(0.22, 1, 0.36, 1));
  }

  .stage-item:hover .stage-item__number {
    transform: scale(1.2);
  }

} /* end premium animations media query */