/* ========================================
   Modern Animations & Interactions
   ======================================== */

/* ---- CSS Variables for Timing ---- */
:root {
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.3s;
  --duration-slow: 0.5s;
}

/* ========================================
   1. SCROLL REVEAL ANIMATIONS
   ======================================== */

/* Base state for animated elements */
[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
  will-change: opacity, transform;
}

/* Visible state when scrolled into view */
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Animation variants */
[data-animate="fade-up"] {
  transform: translateY(40px);
}

[data-animate="fade-down"] {
  transform: translateY(-40px);
}

[data-animate="fade-left"] {
  transform: translateX(-40px);
}

[data-animate="fade-right"] {
  transform: translateX(40px);
}

[data-animate="fade-scale"] {
  transform: scale(0.95);
}

[data-animate="fade-scale"].is-visible {
  transform: scale(1);
}

/* Staggered children animations */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              transform var(--duration-normal) var(--ease-out-expo);
}

[data-stagger].is-visible > *:nth-child(1) { transition-delay: 0ms; }
[data-stagger].is-visible > *:nth-child(2) { transition-delay: 80ms; }
[data-stagger].is-visible > *:nth-child(3) { transition-delay: 160ms; }
[data-stagger].is-visible > *:nth-child(4) { transition-delay: 240ms; }
[data-stagger].is-visible > *:nth-child(5) { transition-delay: 320ms; }
[data-stagger].is-visible > *:nth-child(6) { transition-delay: 400ms; }
[data-stagger].is-visible > *:nth-child(7) { transition-delay: 480ms; }
[data-stagger].is-visible > *:nth-child(8) { transition-delay: 560ms; }

[data-stagger].is-visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   2. CARD HOVER ANIMATIONS
   ======================================== */

/* Video cards - subtle lift effect */
.card {
  transition: transform var(--duration-normal) var(--ease-out-expo),
              box-shadow var(--duration-normal) var(--ease-out-expo);
  will-change: transform, box-shadow;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Image zoom on hover within cards */
.card video,
.card .position-relative {
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.card:hover video,
.card:hover .position-relative {
  transform: scale(1.03);
}

/* ========================================
   3. BUTTON INTERACTIONS
   ======================================== */

/* Base button transitions */
.btn {
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease-out-expo),
              box-shadow var(--duration-fast) var(--ease-out-expo),
              background-color var(--duration-fast) var(--ease-in-out);
  will-change: transform;
}

/* Hover lift effect */
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Active press effect */
.btn:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

/* Ripple effect on click */
.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s var(--ease-out-expo), height 0.6s var(--ease-out-expo);
}

.btn:active::after {
  width: 300px;
  height: 300px;
  opacity: 0;
}

/* Icon animation in buttons */
.btn svg {
  transition: transform var(--duration-fast) var(--ease-out-back);
}

.btn:hover svg {
  transform: scale(1.1);
}

/* ========================================
   4. NAVIGATION ANIMATIONS
   ======================================== */

/* Navbar link underline animation */
.nav-link {
  position: relative;
  transition: color var(--duration-fast) var(--ease-in-out);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 8px;
  right: 8px;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Navbar brand subtle pulse on load */
.navbar-brand {
  animation: brand-in 0.8s var(--ease-out-expo) forwards;
}

@keyframes brand-in {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ========================================
   5. CAROUSEL SLIDE ANIMATIONS
   ======================================== */

/* Smooth slide transitions */
.carousel-item {
  transition: transform 0.8s var(--ease-out-expo), opacity 0.8s var(--ease-out-expo);
}

/* Content reveal within active slide */
.carousel-item .slide-content > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out-expo) 0.3s,
              transform 0.6s var(--ease-out-expo) 0.3s;
}

.carousel-item.active .slide-content > * {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger content reveal */
.carousel-item.active .slide-content > *:nth-child(1) { transition-delay: 0.2s; }
.carousel-item.active .slide-content > *:nth-child(2) { transition-delay: 0.3s; }
.carousel-item.active .slide-content > *:nth-child(3) { transition-delay: 0.4s; }
.carousel-item.active .slide-content > *:nth-child(4) { transition-delay: 0.5s; }
.carousel-item.active .slide-content > *:nth-child(5) { transition-delay: 0.6s; }
.carousel-item.active .slide-content > *:nth-child(6) { transition-delay: 0.7s; }

/* Carousel control buttons */
.carousel-control-prev,
.carousel-control-next {
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-in-out),
              transform var(--duration-normal) var(--ease-out-expo);
}

.video-carousel:hover .carousel-control-prev,
.video-carousel:hover .carousel-control-next {
  opacity: 1;
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
  transform: translateY(-50%) scale(1.1);
}

/* Carousel indicators */
.carousel-indicators button {
  transition: transform var(--duration-fast) var(--ease-out-back),
              background-color var(--duration-fast) var(--ease-in-out),
              width var(--duration-fast) var(--ease-out-expo);
}

.carousel-indicators button.active {
  width: 30px;
  border-radius: 4px;
  background: linear-gradient(90deg, #fff 0%, #e0e0e0 100%);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px rgba(255, 255, 255, 0.5); }
  50% { box-shadow: 0 0 20px rgba(255, 255, 255, 0.8); }
}

.carousel-indicators button:hover {
  transform: scale(1.2);
}

/* ========================================
   6. FLOATING AUDIO PLAYER ANIMATIONS
   ======================================== */

.floating-audio {
  transition: transform var(--duration-slow) var(--ease-out-expo),
              opacity var(--duration-slow) var(--ease-out-expo);
  animation: slide-in-up 0.5s var(--ease-out-expo) forwards;
}

@keyframes slide-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.floating-audio.d-none {
  display: block !important;
  opacity: 0;
  transform: translateY(30px);
  pointer-events: none;
}

/* Subtle floating animation when visible */
.floating-audio:not(.d-none) {
  animation: slide-in-up 0.5s var(--ease-out-expo) forwards,
             subtle-float 6s ease-in-out infinite 0.5s;
}

@keyframes subtle-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

/* ========================================
   7. SECTION TITLE ANIMATIONS
   ======================================== */

h2 {
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #333 0%, transparent 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.6s var(--ease-out-expo);
}

[data-animate].is-visible h2::after,
h2:hover::after {
  transform: scaleX(1);
}

/* ========================================
   8. LINK HOVER ANIMATIONS
   ======================================== */

footer a,
.footer a {
  position: relative;
  transition: color var(--duration-fast) var(--ease-in-out),
              transform var(--duration-fast) var(--ease-out-expo);
  display: inline-block;
}

footer a:hover,
.footer a:hover {
  transform: translateX(4px);
}

/* ========================================
   9. BADGE & HASHTAG ANIMATIONS
   ======================================== */

.badge {
  transition: transform var(--duration-fast) var(--ease-out-back),
              background-color var(--duration-fast) var(--ease-in-out);
}

.badge:hover {
  transform: scale(1.05);
}

/* ========================================
   10. VIDEO PLAY ICON ANIMATION
   ======================================== */

.itemcard-play {
  transition: opacity var(--duration-normal) var(--ease-in-out),
              transform var(--duration-normal) var(--ease-out-back);
}

.js-short-open:hover .itemcard-play {
  transform: scale(1.1);
}

/* ========================================
   11. SAVED OFFCANVAS ANIMATIONS
   ======================================== */

.offcanvas {
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.list-group-item {
    transition: transform var(--duration-fast) var(--ease-out-expo), background-color var(--duration-fast) var(--ease-in-out);
    margin-bottom: 10px !important;
    border-radius: 10px;
}

    /* Hover grow effect */
    .list-group-item:hover {
        transform: scaleX(1.01) scaleY(1.005);
    }

@keyframes slide-in-right {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ========================================
   12. OFFCANVAS BACKDROP ANIMATION
   ======================================== */

.offcanvas-backdrop {
  transition: opacity var(--duration-normal) var(--ease-in-out);
}

/* ========================================
   13. PAGE LOAD ANIMATIONS
   ======================================== */

/* Navbar entrance */
header {
  animation: slide-down 0.6s var(--ease-out-expo) forwards;
}

@keyframes slide-down {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero section entrance */
.video-carousel {
  animation: fade-in-scale 1s var(--ease-out-expo) forwards;
}

@keyframes fade-in-scale {
  from {
    opacity: 0;
    transform: scale(1.02);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ========================================
   14. REDUCED MOTION SUPPORT
   ======================================== */

@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;
  }
  
  [data-animate] {
    opacity: 1;
    transform: none;
  }
  
  [data-stagger] > * {
    opacity: 1;
    transform: none;
  }
}

/* ========================================
   15. SCROLL TO TOP BUTTON
   ======================================== */

.scroll-top-btn {
  position: fixed;
  bottom: 100px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: #fff;
  border: none;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px) scale(0.8);
  transition: opacity 0.3s var(--ease-out-expo),
              transform 0.3s var(--ease-out-expo),
              background-color 0.2s ease,
              box-shadow 0.2s ease;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #333;
}

.scroll-top-btn.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.scroll-top-btn:hover {
  background: #f0f0f0;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.scroll-top-btn:active {
  transform: translateY(-1px) scale(0.98);
}

.scroll-top-btn svg {
  transition: transform 0.2s var(--ease-out-back);
}

.scroll-top-btn:hover svg {
  transform: translateY(-2px);
}

/* ========================================
   16. PAGE LOADER
   ======================================== */

.page-loader {
  position: fixed;
  inset: 0;
  background: #f8f9fa;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s var(--ease-out-expo), visibility 0.5s var(--ease-out-expo);
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.page-loader__spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top-color: #333;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ========================================
   17. LOADING STATE ANIMATIONS
   ======================================== */

/* Skeleton loading animation */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.05) 0%,
    rgba(0, 0, 0, 0.1) 50%,
    rgba(0, 0, 0, 0.05) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
}

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