/* Animations & polish layer — additive only, does not change layout. */

/* Reveal on scroll */
.reveal,
.reveal-stagger {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1);
  will-change: opacity, transform;
}
.reveal.is-visible,
.reveal-stagger.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Header shadow on scroll */
.site-header {
  transition: box-shadow .3s ease, background-color .3s ease, backdrop-filter .3s ease;
}
.site-header.is-scrolled {
  box-shadow: 0 6px 24px -12px rgba(15, 23, 42, 0.18);
  backdrop-filter: saturate(1.1) blur(6px);
  background-color: rgba(255,255,255,0.92);
}

/* Nav link underline */
.nav-link {
  position: relative;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right center;
  transition: transform .35s cubic-bezier(.2,.7,.2,1);
}
.nav-link:hover::after { transform: scaleX(1); transform-origin: left center; }

/* CTA pulse */
.cta-pulse {
  position: relative;
  overflow: hidden;
}
.cta-pulse::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform .9s ease;
}
.cta-pulse:hover::after { transform: translateX(120%); }

/* Logo subtle entry */
.logo-anim {
  animation: logoIn .9s cubic-bezier(.2,.7,.2,1) both;
}
@keyframes logoIn {
  from { opacity: 0; transform: translateY(-6px) scale(.96); }
  to   { opacity: 1; transform: none; }
}

/* Hero floating shapes */
.floaty { animation: floaty 14s ease-in-out infinite; }
.floaty-b { animation-duration: 18s; animation-direction: reverse; }
@keyframes floaty {
  0%,100% { transform: translate3d(0,0,0) scale(1); }
  50%     { transform: translate3d(0,-22px,0) scale(1.05); }
}

/* Hero image slow zoom */
.hero-img {
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.02); }
  to   { transform: scale(1.08); }
}

/* Title shine */
.shine {
  background: linear-gradient(90deg, currentColor 0%, #fff8e1 50%, currentColor 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 6s linear infinite;
}
@keyframes shine {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* Decorative line growing */
.line-grow {
  display: inline-block;
  transform-origin: left center;
  animation: lineGrow 1s .2s cubic-bezier(.2,.7,.2,1) both;
}
@keyframes lineGrow { from { transform: scaleX(0); } to { transform: scaleX(1); } }

/* Button shine */
.btn-shine {
  position: relative;
  overflow: hidden;
}
.btn-shine::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 40%, rgba(255,255,255,.6) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform .8s ease;
}
.btn-shine:hover::before { transform: translateX(120%); }

/* Service card hover lift */
.service-card { transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease; }
.service-card:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -20px rgba(15,23,42,.25); }

/* Service open list stagger */
.service-list li {
  opacity: 0;
  transform: translateY(6px);
  animation: liIn .5s cubic-bezier(.2,.7,.2,1) forwards;
}
details[open] .service-list li:nth-child(1) { animation-delay: .04s; }
details[open] .service-list li:nth-child(2) { animation-delay: .09s; }
details[open] .service-list li:nth-child(3) { animation-delay: .14s; }
details[open] .service-list li:nth-child(4) { animation-delay: .19s; }
details[open] .service-list li:nth-child(5) { animation-delay: .24s; }
details[open] .service-list li:nth-child(6) { animation-delay: .29s; }
@keyframes liIn { to { opacity: 1; transform: none; } }

/* Why cards delayed reveal */
.tilt-card { transition: transform .4s cubic-bezier(.2,.7,.2,1), box-shadow .4s ease, border-color .4s ease; transition-delay: var(--rd, 0ms); }
.tilt-card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px -20px rgba(15, 23, 42, .25); }

/* Contact cards lift */
.contact-card { transition: transform .35s ease, background-color .35s ease; }
.contact-card:hover { transform: translateY(-3px); }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger { opacity: 1 !important; transform: none !important; transition: none !important; }
  .floaty, .hero-img, .shine, .logo-anim, .line-grow { animation: none !important; }
}