/* Parallax Kontraktor - Custom Styles */

html {
  scroll-behavior: smooth;
}

/* Fade-in on scroll */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.15s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.2s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.25s; }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.3s; }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: 0.35s; }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: 0.4s; }

.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* Hero gradient overlay */
.hero-overlay {
  background: linear-gradient(
    135deg,
    rgba(10, 10, 10, 0.92) 0%,
    rgba(10, 10, 10, 0.75) 50%,
    rgba(10, 10, 10, 0.85) 100%
  );
}

/* Before/After slider */
.ba-container {
  position: relative;
  overflow: hidden;
  border-radius: 1rem;
  aspect-ratio: 16 / 10;
  cursor: ew-resize;
  user-select: none;
}

.ba-before,
.ba-after {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.ba-after {
  clip-path: inset(0 0 0 50%);
}

.ba-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: #f97316;
  transform: translateX(-50%);
  z-index: 10;
}

.ba-handle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  background: #f97316;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.ba-handle::after {
  content: '◀ ▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 8px;
  color: #fff;
  letter-spacing: -2px;
  white-space: nowrap;
}

.ba-label {
  position: absolute;
  top: 1rem;
  padding: 0.35rem 0.85rem;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 0.25rem;
  z-index: 5;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ba-label-before { left: 1rem; }
.ba-label-after { right: 1rem; }

/* Timeline connector */
.timeline-line {
  background: linear-gradient(to bottom, #f97316, #3b82f6);
}

/* Floating WhatsApp pulse */
@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.4); opacity: 0; }
}

.wa-pulse::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: #25d366;
  animation: pulse-ring 2s ease-out infinite;
}

/* Portfolio card hover */
.portfolio-card img {
  transition: transform 0.5s ease;
}

.portfolio-card:hover img {
  transform: scale(1.05);
}

/* Service card */
.service-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

/* Stat counter animation */
.stat-number {
  font-variant-numeric: tabular-nums;
}

/* Modal backdrop */
.modal-backdrop {
  backdrop-filter: blur(4px);
}

/* FAQ accordion */
.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.3s ease;
}

.faq-answer.open {
  grid-template-rows: 1fr;
}

.faq-answer > div {
  overflow: hidden;
}

/* Nav mobile menu */
.mobile-menu {
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.mobile-menu.closed {
  transform: translateX(100%);
  opacity: 0;
  pointer-events: none;
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 2px solid #f97316;
  outline-offset: 2px;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.5rem 1rem;
  background: #f97316;
  color: #fff;
  border-radius: 0.25rem;
  font-weight: 600;
}

.skip-link:focus {
  top: 1rem;
}