/* ==========================================================================
   INTERACTIVE ANIMATIONS & SCROLL REVEALS - MICRO INTERACTIONS SYSTEM
   ========================================================================== */

/* Keyframe Core */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(4px); /* Very subtle translation */
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-right {
  from {
    opacity: 0;
    transform: translateX(-4px); /* Very subtle translation */
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

/* Base Scroll Reveal Classes (controlled via JS Intersection Observer) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-20px);
  transition:
    opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(20px);
  transition:
    opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.95) translateY(10px);
  transition:
    opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.active {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* Image reveal zoom */
.reveal-zoom {
  overflow: hidden;
  border-radius: inherit;
}
.reveal-zoom img {
  transform: scale(1.08);
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-zoom.active img {
  transform: scale(1);
}

/* ==========================================================================
   LANDING PAGE ENTRANCE SEQUENCE
   Staggered entrance delays activated on body.entrance-ready
   ========================================================================== */
.entrance-ready .header-wrapper,
.entrance-ready .hero-entrance-badge,
.entrance-ready .hero-entrance-title,
.entrance-ready .hero-entrance-desc,
.entrance-ready .hero-entrance-btns,
.entrance-ready .hero-entrance-stats,
.entrance-ready .hero-entrance-img {
  opacity: 1;
  transform: translateY(0);
}

.entrance-ready .header-wrapper {
  transform: none !important;
}

.header-wrapper {
  opacity: 0;
  transform: translateY(-15px);
  transition:
    opacity 500ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-entrance-badge,
.hero-entrance-title,
.hero-entrance-desc,
.hero-entrance-btns,
.hero-entrance-stats,
.hero-entrance-img {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 600ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.entrance-ready .header-wrapper {
  transition-delay: 50ms;
}
.entrance-ready .hero-entrance-badge {
  transition-delay: 150ms;
}
.entrance-ready .hero-entrance-title {
  transition-delay: 250ms;
}
.entrance-ready .hero-entrance-desc {
  transition-delay: 350ms;
}
.entrance-ready .hero-entrance-btns {
  transition-delay: 450ms;
}
.entrance-ready .hero-entrance-stats {
  transition-delay: 550ms;
}
.entrance-ready .hero-entrance-img {
  transition-delay: 650ms;
}

/* Subtle Hero Image Zoom Animation */
@keyframes subtleHeroZoom {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.03);
  }
}
.hero-img-zoom {
  animation: subtleHeroZoom 15s ease-out forwards;
}

/* ==========================================================================
   DONATE BUTTON MICRO-ANIMATIONS
   Soft glassmorphism, breathing glow, ripple click, floating hearts
   ========================================================================== */
@keyframes premium-breathe {
  0%,
  100% {
    transform: scale(1);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
  }
  50% {
    transform: scale(1.015);
    box-shadow:
      0 4px 25px rgba(37, 99, 235, 0.4),
      0 0 0 5px rgba(37, 99, 235, 0.12);
  }
}
.premium-donate-btn {
  animation: premium-breathe 4s ease-in-out infinite;
  transition:
    transform 300ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 300ms cubic-bezier(0.16, 1, 0.3, 1) !important;
  position: relative;
}
.premium-donate-btn:hover {
  transform: translateY(-3px) scale(1.025) !important;
  box-shadow: 0 6px 28px rgba(37, 99, 235, 0.45) !important;
  animation-play-state: paused;
}

/* Floating heart icon keyframes */
@keyframes float-heart {
  0% {
    transform: translateY(0) scale(0.6);
    opacity: 0;
  }
  20% {
    opacity: 0.8;
  }
  100% {
    transform: translateY(-65px) scale(1.2);
    opacity: 0;
  }
}
.floating-heart {
  position: absolute;
  bottom: 5px;
  pointer-events: none;
  font-size: 11px;
  animation: float-heart 1.8s ease-in-out forwards;
  opacity: 0;
  z-index: 10;
}

/* Ripple click effect */
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}
@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Stagger systems for dynamic list items (cards) */
.stagger-parent > .reveal {
  transition-delay: calc(
    var(--stagger-index, 0) * 40ms
  ); /* Stagger speeded up to feel instant */
}

/* Dynamic hover effects for images inside cards (Very subtle zoom) */
.hover-zoom {
  overflow: hidden;
}

.hover-zoom img {
  transition: transform var(--transition-normal);
}

.hover-zoom:hover img {
  transform: scale(1.01);
}

/* Premium Card displacement on hover - Gentle 2px lift */
.hover-lift {
  transition:
    transform var(--transition-normal),
    box-shadow var(--transition-normal);
  will-change: transform, box-shadow;
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Loader Shimmering effects for skeleton components */
.skeleton-shimmer {
  background: linear-gradient(90deg, #f3f7f3 25%, #eaf1ea 50%, #f3f7f3 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
}

/* Donation Action Pulse - Primary Orange CTA with Glass Shimmers and Breathing Glows */
.pulse-donate {
  position: relative;
  overflow: hidden;
  height: 56px !important;
  padding: 0 28px !important;
  font-size: 17px !important;
  font-weight: 700 !important;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-full) !important;
  border: 1px solid rgba(255, 138, 0, 0.2) !important;
  background: var(--gradient-donate) !important;
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(255, 138, 0, 0.15);
  transition:
    transform 220ms ease,
    box-shadow 220ms ease,
    background 220ms ease,
    filter 220ms ease !important;
  animation: orange-glow-breathe 4s ease-in-out infinite;
  cursor: pointer;
  z-index: 5;
}

/* Hover: Lift, Brighter gradient, Stronger shadow, Heart rotate */
.pulse-donate:hover {
  transform: translateY(-3px);
  background: var(--gradient-donate-hover) !important;
  box-shadow: 0 10px 30px rgba(255, 138, 0, 0.4) !important;
  filter: brightness(1.03);
}

.pulse-donate:hover::before {
  animation-duration: 1.6s; /* Shimmer speeds up on hover */
}

.pulse-donate:hover svg {
  transform: scale(1.2) translateY(-2px) rotate(5deg) !important;
}

/* Active click states */
.pulse-donate:active {
  transform: scale(0.97) translateY(-1px) !important;
  transition: transform 150ms ease !important;
}

/* 1. Continuous Glass Shimmer (Wider, blurred, soft) */
@keyframes shimmer-move {
  0% {
    transform: translateX(-180%) skewX(-25deg);
  }
  100% {
    transform: translateX(180%) skewX(-25deg);
  }
}

.pulse-donate::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 40%; /* 40% of the button width */
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.05) 10%,
    rgba(255, 255, 255, 0.25) 50%,
    rgba(255, 255, 255, 0.05) 90%,
    transparent
  );
  filter: blur(4px);
  transform: translateX(-180%) skewX(-25deg);
  animation: shimmer-move 3.2s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
  pointer-events: none;
  z-index: 1;
}

/* 2. Static Outline Heart transition rule */
.pulse-donate svg {
  will-change: transform, opacity;
  display: inline-block;
  vertical-align: middle;
  transition:
    transform 220ms ease,
    opacity 150ms ease;
}

/* Hide original white heart outline temporarily when red heart is popping */
.pulse-donate.heart-pop-active svg {
  opacity: 0 !important;
}

/* 3. Orange Button Glow Breathe Keyframes */
@keyframes orange-glow-breathe {
  0%,
  100% {
    box-shadow: 0 4px 15px rgba(255, 138, 0, 0.15);
  }
  50% {
    box-shadow:
      0 10px 30px rgba(255, 138, 0, 0.3),
      0 0 0 4px rgba(255, 138, 0, 0.08);
  }
}

/* 4. Instagram-like Pop Single Heart Particle Animation (Scale 0.7 -> 1.25 -> 1, Up 12px, Rotate, Eased Fade) */
@keyframes header-float-heart {
  0% {
    transform: translate(-50%, 0) scale(0.7) rotate(-5deg);
    opacity: 0;
  }
  35% {
    transform: translate(-50%, -6px) scale(1.25) rotate(5deg);
    opacity: 1;
  }
  70% {
    transform: translate(-50%, -10px) scale(1) rotate(-3deg);
    opacity: 0.8;
  }
  100% {
    transform: translate(-50%, -12px) scale(0.9) rotate(0deg);
    opacity: 0;
  }
}

.header-floating-heart {
  position: absolute;
  pointer-events: none;
  font-size: 11px;
  animation: header-float-heart 0.65s cubic-bezier(0.175, 0.885, 0.32, 1.275)
    forwards;
  opacity: 0;
  z-index: 10;
}

/* WCAG accessibility: Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale,
  .hover-zoom img,
  .hover-lift,
  .pulse-donate {
    transition: none !important;
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
  }
}

/* Base Mobile Menu Hidden State for Desktop */
.nav-menu,
.nav-menu-close,
.nav-menu-brand {
  display: none !important;
}

/* Base Trust Cards Group container for Desktop (no layout impact) */
.hero-trust-cards-group {
  display: contents;
}

/* ==========================================================================
   MOBILE & TABLET RESPONSIVENESS OVERRIDES
   ========================================================================== */
@media (max-width: 1023px) {
  /* 1. Mobile Menu Redesign */
  .header-wrapper.menu-open {
    transform: none !important;
    opacity: 1 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    filter: none !important;
    background: transparent !important;
    box-shadow: none !important;
    border-bottom: none !important;
    z-index: 999999 !important;
  }

  /* Disable page scrolling on html & body wrapper while menu is open */
  html.html-menu-open,
  html.html-menu-open body {
    overflow: hidden !important;
    height: 100vh !important;
    height: 100dvh !important;
    position: relative !important;
  }

  .nav-menu-brand {
    display: flex !important;
  }
  .nav-menu {
    position: fixed !important;
    inset: 0 !important;
    background-color: #ffffff !important;
    z-index: 2500 !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
    gap: var(--space-4) !important;
    padding: calc(var(--space-10) + env(safe-area-inset-top, 24px))
      var(--space-6) var(--space-6) !important;
    transform: translateY(-100%) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transition:
      transform 400ms cubic-bezier(0.16, 1, 0.3, 1),
      opacity 300ms ease,
      visibility 300ms !important;
    overflow-y: auto !important;
  }
  .nav-menu.is-active {
    transform: translateY(0) !important;
    opacity: 1 !important;
    visibility: visible !important;
  }
  .nav-menu-close {
    position: fixed !important;
    top: calc(20px + env(safe-area-inset-top, 0px)) !important;
    right: 20px !important;
    background: transparent !important;
    border: none !important;
    font-size: 38px !important;
    color: var(--primary) !important;
    cursor: pointer !important;
    z-index: 2510 !important;
    width: 48px !important;
    height: 48px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }
  .nav-menu .nav-link {
    font-size: var(--text-lg) !important;
    font-weight: 700 !important;
    color: var(--primary-dark) !important;
    text-decoration: none !important;
    padding: var(--space-1) var(--space-3) !important;
    transition: color 200ms ease !important;
  }
  .nav-menu .nav-link:hover,
  .nav-menu .nav-link.is-current-page {
    color: var(--accent) !important;
  }

  /* 2. Hero Section Collapses Stack */
  .container.grid.grid-2 {
    grid-template-columns: 1fr !important;
    gap: var(--space-8) !important;
    text-align: center !important;
  }
  .hero-entrance-img {
    flex-direction: column !important;
    gap: var(--space-6) !important;
  }
  .slideshow-container,
  .hero-entrance-img > div:first-child {
    width: 100% !important;
    max-width: 500px !important;
    margin: 0 auto !important;
  }

  /* 3. Floating cards position static below image */
  .hero-floating-badge {
    position: static !important;
    transform: none !important;
    width: 100% !important;
    max-width: 320px !important;
    margin: 0 auto !important;
    box-shadow: var(--shadow-sm) !important;
  }

  /* 4. Spacing overrides */
  section.section {
    padding: var(--space-10) 0 !important;
  }
  .nse-trust-card {
    padding: var(--space-6) var(--space-4) !important;
  }
  .media-frame-offset {
    margin-top: var(--space-4) !important;
    margin-bottom: var(--space-4) !important;
  }
}

/* ==========================================================================
   HERO IMAGE ENTRANCE ANIMATION (Mobile – graceful fade-up)
   ========================================================================== */
@keyframes heroImgFadeUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: no-preference) and (max-width: 767px) {
  /* Initial hidden state — image waits off-screen */
  .mobile-hero-img-frame {
    opacity: 0;
    transform: translateY(20px) scale(0.98);
  }
  /* Triggered by JS adding .is-visible to the wrapper */
  .mobile-hero-img-frame.is-visible {
    animation: heroImgFadeUp 600ms cubic-bezier(0.22, 1, 0.36, 1) 400ms both;
  }
}

@media (max-width: 767px) {
  /* 1. Stack Hero Content elements in custom mobile sequence */
  .container.grid.grid-2 {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--space-6) !important;
  }

  /* Make column wrappers display contents to expose children to flexbox ordering */
  .container.grid.grid-2 > div:first-child {
    display: contents !important;
  }

  .hero-entrance-img {
    display: contents !important;
  }

  .hero-entrance-badge {
    order: 1 !important;
    margin: 0 auto !important;
    align-self: center !important;
  }

  .hero-entrance-title,
  .text-display,
  h1 {
    order: 2 !important;
    font-size: clamp(1.8rem, 5vw + 1.2rem, 2.4rem) !important;
    line-height: 1.2 !important;
    text-align: center !important;
  }

  .hero-entrance-desc,
  .text-story,
  p {
    order: 3 !important;
    font-size: 16px !important;
    line-height: 1.6 !important;
    text-align: center !important;
    margin: 0 auto !important;
  }

  .hero-entrance-btns,
  .btn-group {
    order: 4 !important;
    justify-content: center !important;
    flex-wrap: wrap !important;
    gap: var(--space-3) !important;
    margin: 0 auto !important;
  }

  /* Hero Image Frame Wrapper */
  .hero-entrance-img > div:first-child {
    order: 5 !important;
    width: 100% !important;
    max-width: 500px !important;
    margin: var(--space-4) auto !important;
  }

  /* 2. Trust Cards — grouped with tight gap, equal breathing room above & below */
  .hero-floating-badge {
    order: 6 !important;
    position: static !important;
    transform: none !important;
    width: 100% !important;
    max-width: 340px !important;
    box-shadow: var(--shadow-sm) !important;
  }
  /* Wrapper group for the two trust cards */
  .hero-trust-cards-group {
    order: 6 !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important; /* tight gap between the two cards */
    margin: var(--space-5) auto !important;
    width: 100% !important;
    max-width: 340px !important;
  }
  /* Each card inside the group has no extra margin of its own */
  .hero-trust-cards-group .hero-floating-badge {
    order: unset !important;
    margin: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
  }

  /* 3. Statistics Row — 2-column grid: [220+][18+] / [100% full-width] */
  .hero-entrance-stats,
  .hero-stats-row {
    order: 7 !important;
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    grid-template-rows: auto auto !important;
    gap: 12px !important;
    margin: var(--space-5) auto !important;
    width: 100% !important;
    max-width: 340px !important;
    border-top: none !important; /* remove the desktop border-top */
    padding-top: 0 !important;
    margin-top: var(--space-5) !important;
  }
  /* Third stat (100%) spans both columns */
  .hero-stats-row .stat-item:nth-child(3),
  .hero-entrance-stats .stat-item:nth-child(3) {
    grid-column: 1 / -1 !important;
  }
  /* Each stat item becomes a card */
  .hero-stats-row .stat-item,
  .hero-entrance-stats .stat-item {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm) !important;
    padding: var(--space-3) var(--space-4) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 2px !important;
    text-align: center !important;
  }
  .hero-stats-row .stat-count,
  .hero-entrance-stats .stat-count {
    font-size: var(--text-2xl) !important;
  }

  .grid-2 {
    grid-template-columns: 1fr !important;
    gap: var(--space-6) !important;
  }
}

@media (max-width: 480px) {
  /* At very small screens keep 2-column grid but reduce font slightly */
  .hero-stats-row .stat-count,
  .hero-entrance-stats .stat-count {
    font-size: var(--text-xl) !important;
  }
}