/* ============================================
   2026 FIFA World Cup — Animations
   ============================================ */

/* ── Keyframes ── */

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

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

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

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

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

@keyframes slideInUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(239, 68, 68, 0.4);
  }
  50% {
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.8), 0 0 40px rgba(239, 68, 68, 0.3);
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

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

@keyframes slideRow {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 0.5;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes scoreFlip {
  0% {
    transform: perspective(400px) rotateX(0deg);
  }
  50% {
    transform: perspective(400px) rotateX(-90deg);
  }
  100% {
    transform: perspective(400px) rotateX(0deg);
  }
}

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

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ── Animation Utility Classes ── */

.animate-fade-in {
  animation: fadeIn var(--duration-slow) var(--ease-default) forwards;
}

.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp var(--duration-slow) var(--ease-default) forwards;
}

.animate-fade-in-down {
  opacity: 0;
  animation: fadeInDown var(--duration-slow) var(--ease-default) forwards;
}

.animate-fade-in-left {
  opacity: 0;
  animation: fadeInLeft var(--duration-slow) var(--ease-default) forwards;
}

.animate-fade-in-right {
  opacity: 0;
  animation: fadeInRight var(--duration-slow) var(--ease-default) forwards;
}

.animate-scale-in {
  animation: scaleIn var(--duration-slow) var(--ease-default) forwards;
}

.animate-bounce-in {
  animation: bounceIn 0.6s var(--ease-default) forwards;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-pulse-glow {
  animation: pulseGlow 2s ease-in-out infinite;
}

.animate-shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.03) 25%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.03) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.animate-gradient {
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

/* ── Scroll-Triggered Animations ── */
/* Elements start hidden and animate in when .is-visible is added */

.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slower) var(--ease-default),
              transform var(--duration-slower) var(--ease-default);
}

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

/* Staggered animation delays for grid children */
.stagger-children > *:nth-child(1) { transition-delay: 0ms; }
.stagger-children > *:nth-child(2) { transition-delay: 60ms; }
.stagger-children > *:nth-child(3) { transition-delay: 120ms; }
.stagger-children > *:nth-child(4) { transition-delay: 180ms; }
.stagger-children > *:nth-child(5) { transition-delay: 240ms; }
.stagger-children > *:nth-child(6) { transition-delay: 300ms; }
.stagger-children > *:nth-child(7) { transition-delay: 360ms; }
.stagger-children > *:nth-child(8) { transition-delay: 420ms; }
.stagger-children > *:nth-child(9) { transition-delay: 480ms; }
.stagger-children > *:nth-child(10) { transition-delay: 540ms; }
.stagger-children > *:nth-child(11) { transition-delay: 600ms; }
.stagger-children > *:nth-child(12) { transition-delay: 660ms; }

/* ── LIVE indicator ── */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-live);
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-live);
  animation: pulseGlow 1.5s ease-in-out infinite;
}

/* ── Skeleton Loading ── */
.skeleton {
  border-radius: var(--radius-md);
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.03) 25%,
    rgba(255, 255, 255, 0.06) 50%,
    rgba(255, 255, 255, 0.03) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 1.5em;
  width: 60%;
  margin-bottom: 0.75em;
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}

/* ── 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;
  }

  .scroll-animate {
    opacity: 1;
    transform: none;
  }
}