/* ==========================================================================
   KELUM TRAVEL & TOURS - SITE-WIDE ANIMATIONS & INTERACTION STYLES
   ========================================================================== */

/* 1. PAGE LOAD ANIMATIONS & INITIAL STATES */
@keyframes navSlideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInSimple {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Page load initial keyframe triggers */
.header-nav {
  animation: navSlideDown 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-subtitle {
  animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.1s backwards;
}

.hero-title {
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.2s backwards;
}

.hero-description {
  animation: heroFadeUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.35s backwards;
}

.subpage-hero-content {
  animation: heroFadeUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) 0.15s backwards;
}


/* PARALLAX SCROLL EFFECT STYLES */
.parallax-container {
  position: relative;
}

.parallax-layer {
  will-change: transform;
  transition: transform 0.1s cubic-bezier(0, 0, 0.2, 1);
}

/* TYPEWRITER EFFECT STYLES */
.typewriter-trigger.typing::after {
  content: '|';
  color: var(--primary-gold);
  font-weight: 400;
  margin-left: 3px;
  animation: blinkCursor 0.75s step-end infinite;
}

@keyframes blinkCursor {
  from, to { opacity: 1; }
  50% { opacity: 0; }
}

/* SLIDE UP ON SCROLL STYLES */
.animate-on-scroll.slide-up,
.animate-on-scroll.slide-in-bottom {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.85s cubic-bezier(0.16, 1, 0.3, 1), transform 0.85s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.slide-up.is-visible,
.animate-on-scroll.slide-in-bottom.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 2. SCROLL REVEAL ANIMATIONS (INTERSECTION OBSERVER TARGETS) */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reveal direction & variant classes */
.animate-on-scroll.fade-in {
  opacity: 0;
  transform: translateY(25px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

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

.animate-on-scroll.zoom-in {
  transform: scale(0.93);
}

.animate-on-scroll.slide-left.is-visible,
.animate-on-scroll.slide-right.is-visible {
  transform: translateX(0);
}

.animate-on-scroll.zoom-in.is-visible {
  transform: scale(1);
}

/* Stagger delay utilities for grid cards */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }


/* 3. BUTTON AND LINK HOVER EFFECTS */
.btn-gold-action,
.btn-book-now,
.btn-submit-review,
.btn-submit-contact,
.btn-admin-submit,
.btn-write-review-cta {
  position: relative;
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
              background-color 0.3s ease, 
              box-shadow 0.3s ease !important;
}

.btn-gold-action:hover,
.btn-book-now:hover,
.btn-submit-review:hover,
.btn-submit-contact:hover,
.btn-admin-submit:hover,
.btn-write-review-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 22px rgba(181, 158, 102, 0.4) !important;
}

.btn-gold-action::after,
.btn-book-now::after,
.btn-submit-review::after,
.btn-submit-contact::after,
.btn-admin-submit::after,
.btn-write-review-cta::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transform: skewX(-20deg);
  transition: left 0.75s ease;
}

.btn-gold-action:hover::after,
.btn-book-now:hover::after,
.btn-submit-review:hover::after,
.btn-submit-contact:hover::after,
.btn-admin-submit:hover::after,
.btn-write-review-cta:hover::after {
  left: 140%;
}


/* 4. NAVIGATION LINKS & HEADER TRANSITIONS */
.nav-link {
  transition: color 0.3s ease;
}

.nav-link::after {
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}


/* 5. IMAGE & CARD HOVER ANIMATIONS */
.attraction-card,
.exp-card,
.hotel-card,
.package-card,
.review-card,
.pillar-card,
.about-story-card,
.dest-visual-card,
.discover-visual-box,
.metric-card,
.admin-panel-card {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.3s ease !important;
}

.attraction-card:hover,
.exp-card:hover,
.hotel-card:hover,
.package-card:hover,
.review-card:hover,
.pillar-card:hover {
  transform: translateY(-7px) scale(1.015);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.16) !important;
}


/* 6. FORM INPUT FOCUS ANIMATIONS */
.form-control,
.admin-input,
.filter-select {
  transition: border-color 0.3s ease, 
              box-shadow 0.3s ease, 
              background-color 0.3s ease !important;
}

.form-control:focus,
.admin-input:focus,
.filter-select:focus {
  border-color: var(--primary-gold) !important;
  box-shadow: 0 0 0 4px rgba(181, 158, 102, 0.18) !important;
}


/* 7. LOADING SPINNER & SKELETON ANIMATIONS */
@keyframes spinRing {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes skeletonPulse {
  0% { opacity: 0.6; }
  50% { opacity: 1; }
  100% { opacity: 0.6; }
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(181, 158, 102, 0.25);
  border-top-color: var(--primary-gold);
  border-radius: 50%;
  animation: spinRing 0.8s linear infinite;
  display: inline-block;
  vertical-align: middle;
}

.skeleton-box {
  background: linear-gradient(90deg, #edf2f7 25%, #e2e8f0 37%, #edf2f7 63%);
  background-size: 400% 100%;
  animation: skeletonPulse 1.4s ease infinite;
  border-radius: 4px;
}


/* 8. MODAL / POPUP OPEN-CLOSE ANIMATIONS */
.review-modal-overlay,
.admin-modal-overlay {
  transition: opacity 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
              visibility 0.35s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.review-modal-card,
.admin-modal-card {
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), 
              opacity 0.35s ease !important;
}

.review-modal-overlay.active .review-modal-card,
.admin-modal-overlay.active .admin-modal-card {
  transform: scale(1) translateY(0) !important;
}

/* 9. SUBPAGE SPECIFIC CARD & AVATAR ANIMATIONS */
.founder-card,
.contact-card-box,
.contact-form-panel,
.review-cta-card,
.pkg-tab-btn,
.stat-item {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s ease !important;
}

.contact-card-box:hover,
.founder-card:hover,
.review-cta-card:hover {
  transform: translateY(-6px) scale(1.01) !important;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3) !important;
  border-color: var(--primary-gold) !important;
}

.stat-item:hover {
  transform: translateY(-5px) scale(1.03) !important;
  box-shadow: 0 10px 25px rgba(181, 158, 102, 0.2) !important;
}

.founder-avatar-box {
  animation: avatarPulse 3s ease-in-out infinite alternate;
}

@keyframes avatarPulse {
  0% { box-shadow: 0 0 0 0 rgba(181, 158, 102, 0.4); }
  100% { box-shadow: 0 0 0 16px rgba(181, 158, 102, 0); }
}

.pkg-tab-btn {
  transition: transform 0.25s ease, background-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease !important;
}

.pkg-tab-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(181, 158, 102, 0.25);
}

/* 10. MEDIA QUERY OPTIMIZATION FOR REDUCED MOTION */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}