/* ================================================
   MOVIENETFLIX — ANIMATIONS v3.0
   Netflix-level motion design
   ================================================ */

/* ================================================
   KEYFRAMES
   ================================================ */

@keyframes heroIn {
  from { opacity: 0; transform: translateY(32px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes heroBgZoom {
  from { transform: scale(1.08); }
  to   { transform: scale(1); }
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

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

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

@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position: 600px 0; }
}

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

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

@keyframes toastIn {
  from { opacity: 0; transform: translateX(28px) scale(0.94); }
  to   { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0) scale(1); }
  to   { opacity: 0; transform: translateX(28px) scale(0.92); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.86) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes scaleInSpring {
  0%   { opacity: 0; transform: scale(0.8) translateY(24px); }
  60%  { opacity: 1; transform: scale(1.03) translateY(-4px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes ripple {
  to { transform: scale(6); opacity: 0; }
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.8); }
}

@keyframes logoGlow {
  0%, 100% { text-shadow: 0 0 20px rgba(229,9,20,0.4), 0 0 40px rgba(229,9,20,0.15); }
  50%       { text-shadow: 0 0 40px rgba(229,9,20,0.8), 0 0 80px rgba(229,9,20,0.3); }
}

@keyframes logoPulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.04); }
}

@keyframes cardReveal {
  from { opacity: 0; transform: scale(0.94) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes iconBounce {
  0%   { transform: scale(1); }
  40%  { transform: scale(0.72); }
  80%  { transform: scale(1.18); }
  100% { transform: scale(1); }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes progressBar {
  from { width: 0%; }
  to   { width: var(--progress, 100%); }
}

@keyframes backdropReveal {
  from { opacity: 0; transform: scale(1.1); }
  to   { opacity: 1; transform: scale(1.02); }
}

@keyframes heroContentIn {
  0%   { opacity: 0; transform: translateX(-40px); }
  100% { opacity: 1; transform: translateX(0); }
}

@keyframes bannerCrossFade {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes floatUp {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

@keyframes shimmerCard {
  0%   { background-position: -800px 0; }
  100% { background-position: 800px 0; }
}

@keyframes borderPulse {
  0%, 100% { border-color: rgba(229,9,20,0.3); box-shadow: 0 0 0 0 rgba(229,9,20,0); }
  50%       { border-color: rgba(229,9,20,0.7); box-shadow: 0 0 0 4px rgba(229,9,20,0.1); }
}

@keyframes navLinkUnderline {
  from { width: 0; opacity: 0; }
  to   { width: 100%; opacity: 1; }
}

/* ================================================
   NAVBAR
   ================================================ */
.navbar {
  transition: background 0.5s cubic-bezier(0.4,0,0.2,1),
              backdrop-filter 0.4s ease,
              box-shadow 0.4s ease,
              height 0.3s ease;
}

/* Logo animation */
.logo-m {
  animation: logoGlow 4s ease-in-out infinite;
  display: inline-block;
}

.logo:hover .logo-m {
  animation: logoPulse 0.6s var(--ease-spring) forwards, logoGlow 4s ease-in-out infinite;
}

/* Nav link underline animation */
.nav-link::after {
  transition: width 0.35s cubic-bezier(0.4,0,0.2,1), opacity 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  animation: navLinkUnderline 0.35s cubic-bezier(0.4,0,0.2,1) forwards;
}

/* ================================================
   HERO BANNER
   ================================================ */

/* Hero content entrance */
.hero-content {
  animation: heroContentIn 0.9s cubic-bezier(0.4,0,0.2,1) both;
}

/* Cross-fade for banner slides */
.hero-slide {
  will-change: opacity;
  transition: opacity 1.5s cubic-bezier(0.4,0,0.2,1);
}

.hero-slide img {
  animation: backdropReveal 1.2s cubic-bezier(0.4,0,0.2,1) both;
}

/* Hero badge */
.hero-badge {
  animation: slideInLeft 0.6s 0.3s cubic-bezier(0.4,0,0.2,1) both;
}

.hero-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--red);
  border-radius: 50%;
  animation: pulseDot 1.5s ease-in-out infinite;
  flex-shrink: 0;
}

/* Hero title */
.hero-title-anim {
  animation: heroIn 0.8s 0.1s cubic-bezier(0.4,0,0.2,1) both;
}

/* Hero synopsis */
.hero-synopsis {
  animation: heroIn 0.8s 0.25s cubic-bezier(0.4,0,0.2,1) both;
}

/* Hero buttons */
.hero-buttons {
  animation: heroIn 0.8s 0.4s cubic-bezier(0.4,0,0.2,1) both;
}

/* Progress bar */
.hero-progress-bar {
  animation: progressBar 8s linear forwards;
}

/* Hero indicators */
.hero-dot {
  transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
}

/* ================================================
   CARDS
   ================================================ */
.movie-card {
  will-change: transform;
  transition: transform 0.38s cubic-bezier(0.4,0,0.2,1),
              box-shadow 0.38s cubic-bezier(0.4,0,0.2,1),
              z-index 0s;
}

/* Card overlay slide-up */
.card-overlay {
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1),
              opacity 0.32s ease;
}

/* Card shine */
.movie-card-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.07) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.32s ease;
  pointer-events: none;
  border-radius: inherit;
}

.movie-card:hover .movie-card-inner::after { opacity: 1; }

/* Card image lazy load */
.card-poster {
  transition: opacity 0.45s ease, filter 0.3s ease;
}
.card-poster.loading { opacity: 0; }
.card-poster.loaded  { opacity: 1; }

/* Card animation on appear */
.card-appear {
  animation: cardReveal 0.5s var(--ease-out) both;
}

/* Card season badge border pulse */
.card-season-badge {
  animation: borderPulse 2.5s ease-in-out infinite;
}

/* ================================================
   SKELETON SHIMMER
   ================================================ */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg3) 0px,
    var(--bg4) 40px,
    var(--bg3) 80px
  );
  background-size: 800px 100%;
  animation: shimmerCard 1.6s linear infinite;
  border-radius: var(--radius);
}

/* ================================================
   RIPPLE EFFECT
   ================================================ */
.btn-watch, .btn-primary, .auth-btn {
  position: relative;
  overflow: hidden;
}

.ripple-element {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.22);
  animation: ripple 0.75s linear;
  pointer-events: none;
  transform: scale(0);
}

/* Button scale */
.btn-watch:active, .btn-primary:active { transform: scale(0.97); }
.btn-secondary:active { transform: scale(0.96); }

/* ================================================
   SECTIONS
   ================================================ */
.section {
  animation: pageFadeIn 0.5s var(--ease-out) both;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s cubic-bezier(0.4,0,0.2,1), transform 0.6s cubic-bezier(0.4,0,0.2,1);
}

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

/* Section title slide */
.section-title-anim {
  animation: fadeSlideLeft 0.5s var(--ease-out) both;
}

/* ================================================
   EPISODE CARD
   ================================================ */
.episode-card {
  transition: background 0.22s ease,
              border-color 0.22s ease,
              transform 0.18s ease,
              box-shadow 0.22s ease;
}

.episode-card:hover {
  transform: translateX(4px);
}

/* ================================================
   BOTTOM NAV
   ================================================ */
.bn-item::before {
  transition: width 0.3s cubic-bezier(0.4,0,0.2,1), opacity 0.3s ease;
}

.bn-item:active svg {
  animation: iconBounce 0.3s var(--ease-spring);
}

.bn-item svg {
  transition: transform 0.25s var(--ease-spring), color 0.2s ease;
}

.bn-item.active svg {
  transform: translateY(-2px) scale(1.1);
}

/* ================================================
   GENRE BTN
   ================================================ */
.genre-btn {
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
}

/* ================================================
   SEARCH
   ================================================ */
.search-bar { transition: all 0.38s cubic-bezier(0.4,0,0.2,1); }
.search-input { transition: width 0.38s cubic-bezier(0.4,0,0.2,1), opacity 0.28s ease; }

/* ================================================
   HAMBURGER
   ================================================ */
.hamburger span { transition: all 0.32s cubic-bezier(0.4,0,0.2,1); }

/* ================================================
   MOBILE DRAWER
   ================================================ */
.mobile-drawer { transition: transform 0.38s cubic-bezier(0.4,0,0.2,1); }
.mobile-overlay { transition: opacity 0.32s ease; }

/* Drawer nav items stagger */
.drawer-nav a {
  transition: background 0.2s ease, transform 0.2s ease;
}

.drawer-nav a:active { transform: scale(0.97); }

/* ================================================
   MODALS
   ================================================ */

/* Modal backdrop */
.modal-overlay {
  transition: opacity 0.35s ease, backdrop-filter 0.35s ease;
}

/* Modal content spring */
.modal-content {
  transition: transform 0.45s cubic-bezier(0.34,1.56,0.64,1),
              opacity 0.35s ease;
}

/* Player modal */
.player-modal {
  transition: transform 0.45s cubic-bezier(0.34,1.56,0.64,1),
              opacity 0.35s ease;
}

/* ================================================
   USER DROPDOWN
   ================================================ */
.user-dropdown {
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
  transform-origin: top right;
}

.user-dropdown.open {
  animation: scaleIn 0.22s cubic-bezier(0.4,0,0.2,1) forwards;
}

/* ================================================
   PAGE TRANSITIONS
   ================================================ */
.page-fade-in {
  animation: pageFadeIn 0.42s var(--ease-out) both;
}

/* ================================================
   DETAIL PAGE
   ================================================ */

/* Backdrop Ken Burns */
.detail-backdrop img {
  transform: scale(1.04);
  transition: transform 10s ease-out;
  animation: backdropReveal 1.2s cubic-bezier(0.4,0,0.2,1) both;
}

.detail-backdrop:hover img { transform: scale(1); }

/* Detail info appear */
.detail-info { animation: pageFadeIn 0.6s 0.15s var(--ease-out) both; }
.detail-title { animation: heroIn 0.7s 0.1s var(--ease-out) both; }

/* ================================================
   STAT CARDS
   ================================================ */
.stat-number { animation: countUp 0.7s var(--ease-out) both; }

/* ================================================
   PWA BANNER
   ================================================ */
.pwa-banner {
  transition: transform 0.52s cubic-bezier(0.34,1.56,0.64,1), opacity 0.4s ease;
}

/* ================================================
   SERVER BUTTONS
   ================================================ */
.server-btn {
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
}

.server-btn.active svg {
  animation: pulseDot 2s ease-in-out infinite;
}

/* ================================================
   STAR RATING
   ================================================ */
.star-btn {
  transition: transform 0.2s var(--ease-spring), color 0.2s ease;
}

.star-btn:hover { transform: scale(1.3); }
.star-btn.active { transform: scale(1.15); }

/* ================================================
   WATCHLIST HEART
   ================================================ */
.card-wishlist {
  transition: transform 0.22s var(--ease-spring), opacity 0.22s ease;
}

.card-wishlist:active { transform: scale(1.4); }
.card-wishlist.in-list { color: var(--red); }

/* ================================================
   TOAST NOTIFICATIONS
   ================================================ */
.toast {
  animation: toastIn 0.4s cubic-bezier(0.34,1.56,0.64,1) both;
}

/* ================================================
   SCROLL REVEAL (Intersection Observer)
   ================================================ */
.section-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s cubic-bezier(0.4,0,0.2,1), transform 0.65s cubic-bezier(0.4,0,0.2,1);
}

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

/* Stagger for grid items */
.grid-reveal:nth-child(1)  { transition-delay: 0.04s; }
.grid-reveal:nth-child(2)  { transition-delay: 0.08s; }
.grid-reveal:nth-child(3)  { transition-delay: 0.12s; }
.grid-reveal:nth-child(4)  { transition-delay: 0.16s; }
.grid-reveal:nth-child(5)  { transition-delay: 0.20s; }
.grid-reveal:nth-child(6)  { transition-delay: 0.24s; }
.grid-reveal:nth-child(n+7){ transition-delay: 0.28s; }

/* ================================================
   EPISODE NAVIGATOR (Player)
   ================================================ */
.episode-navigator {
  animation: slideUp 0.35s var(--ease-out) both;
}

.ep-nav-btn {
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
}

.ep-nav-btn:hover {
  transform: scale(1.05);
}

.ep-nav-btn:active { transform: scale(0.95); }

/* ================================================
   SEASON TABS
   ================================================ */
.season-tab {
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
  position: relative;
}

.season-tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: width 0.3s cubic-bezier(0.4,0,0.2,1);
  border-radius: 1px;
}

.season-tab.active::after { width: 100%; }

/* ================================================
   LOADING SPINNER (Netflix-style)
   ================================================ */
.spinner {
  border-color: rgba(255,255,255,0.15);
  border-top-color: var(--red);
  animation: spin 0.75s linear infinite;
}

.player-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid rgba(255,255,255,0.12);
  border-top-color: var(--red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}