/* ==========================================
   REAL ENGINEERING SERVICES , ANIMATIONS
   ========================================== */

/* -- REVEAL ON SCROLL -- */
.reveal-up,
.reveal-left,
.reveal-right {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--delay, 0ms);
}

.reveal-up    { transform: translateY(40px); }
.reveal-left  { transform: translateX(-50px); }
.reveal-right { transform: translateX(50px); }

.reveal-up.in-view,
.reveal-left.in-view,
.reveal-right.in-view {
  opacity: 1;
  transform: translate(0);
}

/* -- HERO ENTRANCE -- */
.hero-left .eyebrow-badge  { animation: fadeSlideUp 0.7s 0.1s both; }
.hero-left h1              { animation: fadeSlideUp 0.7s 0.25s both; }
.hero-left .hero-sub       { animation: fadeSlideUp 0.7s 0.4s both; }
.hero-left .hero-actions   { animation: fadeSlideUp 0.7s 0.5s both; }
.hero-left .hero-stats     { animation: fadeSlideUp 0.7s 0.65s both; }
.hero-right .iso-card      { animation: fadeSlideRight 0.7s 0.3s both; }
.hero-right .hero-card:nth-child(2) { animation: fadeSlideRight 0.7s 0.45s both; }
.hero-right .hero-card:nth-child(3) { animation: fadeSlideRight 0.7s 0.6s both; }

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeSlideRight {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* -- PAGE HERO ENTRANCE -- */
.page-hero-content { animation: heroFadeIn 0.9s 0.1s both; }
@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* -- COUNTER ANIMATION -- */
.stat-num,
.counter {
  display: inline-block;
  transition: none;
}

/* -- NAV SCROLL EFFECT -- */
.site-header {
  transition: box-shadow 0.3s ease, background 0.3s ease;
}

/* -- GALLERY STRIP HOVER -- */
.gallery-strip-item {
  transition: flex 0.4s ease;
}

/* -- PULSE BADGE DOT -- */
.badge-dot {
  width: 6px; height: 6px;
  background: var(--gold-light);
  border-radius: 50%;
  display: inline-block;
  animation: pulseDot 2s ease-in-out infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

/* -- SCROLL INDICATOR -- */
.scroll-indicator {
  animation: scrollBounce 2.5s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50%       { transform: translateX(-50%) translateY(6px); opacity: 0.8; }
}

/* -- SERVICE CARD HOVER -- */
.service-card {
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s ease,
              border-color 0.25s ease;
}

/* -- BUTTON HOVER RIPPLE -- */
.btn {
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.12);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
  border-radius: inherit;
}
.btn:hover::after {
  transform: scaleX(1);
}
.btn-navy::after, .btn-gold::after { background: rgba(255,255,255,0.1); }
.btn-white::after, .btn-outline-white::after, .btn-outline-white2::after { background: rgba(0,0,0,0.05); }

/* -- TEAM CARD OVERLAY -- */
.team-card { position: relative; }
.team-img-wrap { position: relative; overflow: hidden; }
.team-img-wrap::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, transparent 60%, rgba(15,27,92,0.5) 100%);
  opacity: 0;
  transition: opacity 0.35s ease;
}
.team-card:hover .team-img-wrap::after { opacity: 1; }

/* -- ABOUT IMAGE STACK ENTRANCE -- */
.about-img-main { transition: transform 0.6s cubic-bezier(0.22,1,0.36,1); }
.about-img-inset { transition: transform 0.6s 0.1s cubic-bezier(0.22,1,0.36,1); }
.about-img-main:hover { transform: scale(1.01); }

/* -- PROJECT CARD TILT (subtle) -- */
.project-card { transition: transform 0.3s cubic-bezier(0.22,1,0.36,1), box-shadow 0.3s ease; }

/* -- MILESTONE ENTER -- */
.milestone {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  transition-delay: var(--delay, 0ms);
}
.milestone.in-view {
  opacity: 1;
  transform: translateX(0);
}

/* -- PARALLAX BANNER TEXT -- */
.img-banner-content { transition: transform 0.1s linear; }

/* -- VALUE CARD -- */
.value-card {
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1),
              box-shadow 0.3s ease,
              border-color 0.25s ease;
}
.value-icon {
  display: inline-block;
  transition: transform 0.3s ease;
}
.value-card:hover .value-icon {
  transform: scale(1.15) rotate(-5deg);
}

/* -- WHY POINT -- */
.why-point {
  transition: background 0.25s ease, transform 0.25s ease;
}
.why-point:hover {
  transform: translateX(4px);
}

/* -- FAQ ACCORDION -- */
.faq-a {
  transition: none;
}
.faq-item.animating .faq-a {
  overflow: hidden;
}

/* -- CHIP HOVER -- */
.client-chip, .partner-chip {
  transition: all 0.2s ease;
}

/* -- LOADING SKELETON (optional) -- */
@keyframes shimmer {
  from { background-position: -200% 0; }
  to   { background-position: 200% 0; }
}
.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* -- MOBILE NAV -- */
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* -- ISOTOPE FILTER -- */
.project-card {
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.project-card.hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(0.95);
}

/* v2: honour the reduced motion preference for every reveal and transition. */
@media (prefers-reduced-motion: reduce) {
  .reveal-up,
  .reveal-left,
  .reveal-right,
  .milestone,
  .project-card,
  .team-img-wrap,
  .faq-a {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}