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

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

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.93); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes slideRight {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes ripple {
  from { transform: scale(0); opacity: .4; }
  to   { transform: scale(2.5); opacity: 0; }
}

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

@keyframes heroGlow {
  0%, 100% { opacity: .06; }
  50%       { opacity: .12; }
}

@keyframes barFill {
  from { width: 0 !important; }
}

@keyframes rankPop {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.25); }
  70%  { transform: scale(0.92); }
  100% { transform: scale(1); }
}

@keyframes chipBounce {
  0%, 100% { transform: translateY(0); }
  40%      { transform: translateY(-4px); }
  70%      { transform: translateY(1px); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s cubic-bezier(.4,0,.2,1),
              transform .55s cubic-bezier(.4,0,.2,1);
  will-change: opacity, transform;
}

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

.reveal-d1  { transition-delay: .05s; }
.reveal-d2  { transition-delay: .10s; }
.reveal-d3  { transition-delay: .15s; }
.reveal-d4  { transition-delay: .20s; }
.reveal-d5  { transition-delay: .25s; }
.reveal-d6  { transition-delay: .30s; }

.hero { animation: fadeIn .5s ease both; }

.hero-headline {
  animation: fadeUp .55s cubic-bezier(.4,0,.2,1) .05s both;
}

.hero-sub {
  animation: fadeUp .55s cubic-bezier(.4,0,.2,1) .15s both;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%,
    var(--color-primary) 0%, transparent 70%);
  opacity: .07;
  pointer-events: none;
  animation: heroGlow 6s ease-in-out infinite;
}
.hero { position: relative; overflow: hidden; }

.stat-card {
  animation: scaleIn .45s cubic-bezier(.4,0,.2,1) both;
}
.stats-grid .stat-card:nth-child(1) { animation-delay: .08s; }
.stats-grid .stat-card:nth-child(2) { animation-delay: .14s; }
.stats-grid .stat-card:nth-child(3) { animation-delay: .20s; }
.stats-grid .stat-card:nth-child(4) { animation-delay: .26s; }

.stat-value.counting {
  animation: countUp .35s cubic-bezier(.4,0,.2,1) both;
}

.model-card {
  animation: fadeUp .4s cubic-bezier(.4,0,.2,1) both;
  transition: box-shadow .25s cubic-bezier(.4,0,.2,1),
              transform   .25s cubic-bezier(.4,0,.2,1);
}

.model-card:hover {
  transform: translateY(-3px);
}

.model-card { overflow: hidden; }
.model-card .ripple-circle {
  position: absolute;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0;
  pointer-events: none;
  animation: ripple .5s ease-out forwards;
  width: 80px;
  height: 80px;
  margin-left: -40px;
  margin-top: -40px;
}

.grid-cards .model-card:nth-child(1)  { animation-delay: .05s; }
.grid-cards .model-card:nth-child(2)  { animation-delay: .10s; }
.grid-cards .model-card:nth-child(3)  { animation-delay: .15s; }
.grid-cards .model-card:nth-child(4)  { animation-delay: .20s; }
.grid-cards .model-card:nth-child(5)  { animation-delay: .25s; }
.grid-cards .model-card:nth-child(6)  { animation-delay: .30s; }
.grid-cards .model-card:nth-child(7)  { animation-delay: .33s; }
.grid-cards .model-card:nth-child(8)  { animation-delay: .36s; }
.grid-cards .model-card:nth-child(n+9){ animation-delay: .38s; }

.rank-num.gold   { animation: rankPop .55s cubic-bezier(.4,0,.2,1) .35s both; }
.rank-num.silver { animation: rankPop .55s cubic-bezier(.4,0,.2,1) .40s both; }
.rank-num.bronze { animation: rankPop .55s cubic-bezier(.4,0,.2,1) .45s both; }

.score-bar-fill {
  animation: barFill .7s cubic-bezier(.4,0,.2,1) both;
  transform-origin: left;
}

.grid-cards .model-card:nth-child(1) .score-bar-fill { animation-delay: .18s; }
.grid-cards .model-card:nth-child(2) .score-bar-fill { animation-delay: .23s; }
.grid-cards .model-card:nth-child(3) .score-bar-fill { animation-delay: .28s; }
.grid-cards .model-card:nth-child(4) .score-bar-fill { animation-delay: .33s; }
.grid-cards .model-card:nth-child(5) .score-bar-fill { animation-delay: .38s; }
.grid-cards .model-card:nth-child(6) .score-bar-fill { animation-delay: .42s; }
.grid-cards .model-card:nth-child(n+7) .score-bar-fill { animation-delay: .45s; }

.feature-card {
  animation: fadeUp .45s cubic-bezier(.4,0,.2,1) both;
}
.feature-grid .feature-card:nth-child(1) { animation-delay: .10s; }
.feature-grid .feature-card:nth-child(2) { animation-delay: .17s; }
.feature-grid .feature-card:nth-child(3) { animation-delay: .24s; }
.feature-grid .feature-card:nth-child(4) { animation-delay: .31s; }
.feature-grid .feature-card:nth-child(5) { animation-delay: .38s; }
.feature-grid .feature-card:nth-child(6) { animation-delay: .44s; }

.feature-card:hover .feature-icon {
  animation: chipBounce .4s cubic-bezier(.4,0,.2,1);
}

.news-item {
  animation: fadeUp .4s cubic-bezier(.4,0,.2,1) both;
  transition: transform .2s, box-shadow .2s;
}
.news-item:nth-child(1) { animation-delay: .05s; }
.news-item:nth-child(2) { animation-delay: .12s; }
.news-item:nth-child(3) { animation-delay: .18s; }
.news-item:nth-child(n+4){ animation-delay: .22s; }

.news-item:hover { transform: translateX(4px); }

.filter-btn, .size-chip, .sort-chip {
  position: relative;
  overflow: hidden;
}

.filter-btn.active,
.size-chip.active {
  transition: background .2s, border-color .2s, color .2s,
              transform .15s cubic-bezier(.4,0,.2,1) !important;
}
.filter-btn:active, .size-chip:active, .sort-chip:active {
  transform: scale(0.94);
}

.nav-link::after {
  transition: transform .25s cubic-bezier(.4,0,.2,1) !important;
}

.header {
  animation: fadeIn .3s ease both;
}

.section-title {
  position: relative;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 32px;
  height: 2px;
  border-radius: 1px;
  background: var(--color-primary);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform .4s cubic-bezier(.4,0,.2,1);
}
.section-title.visible::after,
.reveal.visible .section-title::after {
  transform: scaleX(1);
}

.compare-bar {
  transition: transform .3s cubic-bezier(.4,0,.2,1),
              opacity   .3s cubic-bezier(.4,0,.2,1) !important;
  transform: translateY(100%);
  opacity: 0;
}
.compare-bar.visible {
  transform: translateY(0) !important;
  opacity: 1 !important;
}

.dialog {
  animation: scaleIn .25s cubic-bezier(.4,0,.2,1) both;
  transform-origin: center;
}

.theme-switch-track,
.theme-switch-thumb {
  transition: all .3s cubic-bezier(.4,0,.2,1) !important;
}

.live-dot {
  animation: pulse 2s ease-in-out infinite !important;
  box-shadow: 0 0 0 0 var(--metric-code);
}
@keyframes pulse {
  0%   { opacity: 1; box-shadow: 0 0 0 0 rgba(30,142,62,.5); }
  50%  { opacity: .4; box-shadow: 0 0 0 5px rgba(30,142,62,0); }
  100% { opacity: 1; box-shadow: 0 0 0 0 rgba(30,142,62,0); }
}

.seg-btn {
  transition: background .2s cubic-bezier(.4,0,.2,1),
              color       .2s cubic-bezier(.4,0,.2,1) !important;
}

.leaderboard-panel {
  animation: none;
}
.leaderboard-panel.active {
  animation: fadeIn .25s ease both;
}

.score-tooltip {
  transition: opacity .15s, transform .15s !important;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}