/* ========================================
   GG-BOUW — ANIMATIONS CSS
   Keyframes, Scroll Animaties, Preloader,
   Transitions, WhatsApp Float
   ======================================== */

/* ---- Keyframe Definities ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  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(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
  50%       { transform: scale(1.08); box-shadow: 0 0 0 12px rgba(37, 211, 102, 0); }
}

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

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

@keyframes loadBar {
  from { width: 0%; }
  to   { width: 100%; }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}

/* ---- Scroll Animaties via Intersection Observer ---- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.from-left {
  transform: translateX(-40px);
}

.animate-on-scroll.from-right {
  transform: translateX(40px);
}

.animate-on-scroll.scale-in {
  transform: scale(0.9);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: none;
}

/* Stagger vertragingen voor grid-items */
.stagger-1  { transition-delay: 0.05s; }
.stagger-2  { transition-delay: 0.10s; }
.stagger-3  { transition-delay: 0.15s; }
.stagger-4  { transition-delay: 0.20s; }
.stagger-5  { transition-delay: 0.25s; }
.stagger-6  { transition-delay: 0.30s; }

/* ---- Preloader ---- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-inner {
  text-align: center;
}

.preloader-logo {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.preloader-gg   { color: var(--white); }
.preloader-bouw { color: var(--accent); }

.preloader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,0.2);
  border-radius: 3px;
  overflow: hidden;
  margin: 0 auto;
}

.preloader-progress {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  animation: loadBar 1.5s ease-out forwards;
}

/* ---- WhatsApp Float Button ---- */
.whatsapp-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: #25d366;
  color: var(--white);
  border-radius: 50%;
  font-size: 1.75rem;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  animation: pulse 2.5s infinite;
  transition: transform var(--transition), box-shadow var(--transition);
}

.whatsapp-float:hover {
  color: var(--white);
  transform: scale(1.12);
  animation: none;
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

.whatsapp-tooltip {
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  transform: translateY(-50%);
  background: var(--dark);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.whatsapp-tooltip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: var(--dark);
}

.whatsapp-float:hover .whatsapp-tooltip {
  opacity: 1;
}

/* ---- Counter Animatie ---- */
.counter-number {
  font-family: var(--font-heading);
  font-weight: 800;
  display: inline-block;
  tabular-nums: 1;
}

/* ---- Hover Effecten Cards ---- */
.card-hover {
  transition: transform var(--transition), box-shadow var(--transition);
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

/* Afbeelding zoom hover */
.img-zoom-wrapper {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.img-zoom-wrapper img {
  transition: transform 0.5s ease;
}

.img-zoom-wrapper:hover img {
  transform: scale(1.08);
}

/* ---- Loading Spinner ---- */
.btn-loader {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn.is-loading .btn-text { display: none; }
.btn.is-loading .btn-loader { display: block; }
.btn.is-loading { pointer-events: none; opacity: 0.85; }

/* ---- FAQ Accordeon animatie ---- */
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.is-open .faq-answer {
  max-height: 500px;
}

.faq-toggle-icon {
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item.is-open .faq-toggle-icon {
  transform: rotate(45deg);
}

/* ---- Floating elements ---- */
.float-element {
  animation: float 4s ease-in-out infinite;
}

/* ---- Shimmer effect (skeleton loading) ---- */
.shimmer {
  background: linear-gradient(90deg, var(--light-gray) 25%, #e9eaeb 50%, var(--light-gray) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}