/* Enhanced Stats Section */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-6);
  position: relative;
}

.stat-row::before {
  content: "";
  position: absolute;
  top: -50px;
  left: -50px;
  right: -50px;
  bottom: -50px;
  background: 
    radial-gradient(800px circle at 20% 30%, color-mix(in srgb, var(--brand) 6%, transparent) 0%, transparent 50%),
    radial-gradient(600px circle at 80% 70%, color-mix(in srgb, var(--brand) 4%, transparent) 0%, transparent 50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur-3) var(--ease-out);
  z-index: -1;
  filter: blur(20px);
}

.stat-row:hover::before {
  opacity: 1;
}

.stat {
  position: relative;
  padding: 32px 24px;
  background: 
    linear-gradient(145deg, 
      color-mix(in srgb, var(--elev-2) 80%, transparent) 0%, 
      color-mix(in srgb, var(--elev-1) 95%, transparent) 100%),
    radial-gradient(ellipse at 50% 0%, 
      color-mix(in srgb, var(--brand) 8%, transparent) 0%, 
      transparent 70%);
  border: 1px solid color-mix(in srgb, var(--stroke) 40%, transparent);
  border-radius: var(--radius-xl);
  box-shadow: 
    var(--shadow-subtle),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(20px) saturate(180%);
  transition: all var(--dur-3) cubic-bezier(0.2, 0.8, 0.2, 1);
  overflow: hidden;
  isolation: isolate;
  text-align: center;
  cursor: pointer;
}

.stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    color-mix(in srgb, var(--brand) 60%, transparent), 
    transparent);
  opacity: 0.8;
  transform: scaleX(0);
  transition: transform var(--dur-2) var(--ease-out);
}

.stat::after {
  content: "";
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(200px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), 
      color-mix(in srgb, var(--brand) 12%, transparent), 
      transparent 70%);
  opacity: 0;
  transition: opacity var(--dur-2) var(--ease);
  z-index: -1;
}

.stat:hover {
  transform: translateY(-8px) scale(1.03);
  border-color: color-mix(in srgb, var(--brand) 50%, var(--stroke));
  box-shadow: 
    0 24px 60px rgba(0, 0, 0, 0.18),
    0 12px 32px var(--brand-glow),
    0 4px 12px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 rgba(0, 0, 0, 0.05);
}

.stat:hover::before {
  transform: scaleX(1);
}

.stat:hover::after {
  opacity: 1;
}

.stat:active {
  transform: translateY(-4px) scale(1.01);
  transition-duration: var(--dur-1);
}

/* Stat content animations */
.stat-content {
  position: relative;
  z-index: 2;
}

.stat .k {
  font-size: var(--size-5);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--text), color-mix(in srgb, var(--text) 70%, var(--brand)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
  transition: all var(--dur-2) var(--ease);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.stat:hover .k {
  transform: scale(1.05);
  background: linear-gradient(135deg, var(--text), var(--brand-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat .k::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, 
    color-mix(in srgb, var(--brand) 30%, transparent), 
    var(--brand-2), 
    color-mix(in srgb, var(--brand) 30%, transparent));
  border-radius: 3px;
  opacity: 0;
  transition: all var(--dur-2) var(--ease-out);
}

.stat:hover .k::after {
  transform: translateX(-50%) scaleX(1);
  width: 60px;
  opacity: 1;
}

.stat .label {
  color: var(--text-muted);
  font-size: var(--size-1);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.4;
  transition: all var(--dur-2) var(--ease);
  position: relative;
}

.stat:hover .label {
  color: var(--text-dim);
  transform: translateY(2px);
}

/* Individual stat color variations with smooth transitions */
.stat:nth-child(1) {
  --stat-color: var(--brand);
}

.stat:nth-child(2) {
  --stat-color: var(--info);
}

.stat:nth-child(3) {
  --stat-color: var(--purple);
}

.stat:nth-child(4) {
  --stat-color: var(--orange);
}

.stat .k {
  background: linear-gradient(135deg, var(--text), color-mix(in srgb, var(--stat-color, var(--brand)) 70%, var(--text)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: all var(--dur-2) var(--ease);
}

.stat:hover .k {
  background: linear-gradient(135deg, var(--text), var(--stat-color, var(--brand-2)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Floating particles effect */
.stat-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--brand);
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

.stat:hover .stat-particle {
  animation: float-particle 2s var(--ease-out) forwards;
}

@keyframes float-particle {
  0% {
    opacity: 0;
    transform: translate(0, 0) scale(0);
  }
  20% {
    opacity: 0.8;
    transform: translate(var(--tx, 20px), var(--ty, -20px)) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(var(--tx-end, 40px), var(--ty-end, -40px)) scale(0);
  }
}

/* Icon integration */
.stat-icon {
  width: 24px;
  height: 24px;
  margin: 0 auto 12px;
  opacity: 0.7;
  transition: all var(--dur-2) var(--ease);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.stat:hover .stat-icon {
  opacity: 1;
  transform: scale(1.1) translateY(-2px);
  filter: drop-shadow(0 4px 8px var(--brand-glow));
}

/* Progress bar animation */
.stat-progress {
  height: 3px;
  background: color-mix(in srgb, var(--stroke) 30%, transparent);
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
  position: relative;
}

.stat-progress::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    var(--stat-color, var(--brand)), 
    transparent);
  transition: left var(--dur-3) var(--ease-out);
}

.stat:hover .stat-progress::after {
  left: 100%;
}

/* Responsive design */
@media (max-width: 1024px) {
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (max-width: 640px) {
  .stat-row {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  
  .stat {
    padding: 28px 20px;
  }
  
  .stat .k {
    font-size: var(--size-4);
  }
  
  .stat:hover {
    transform: translateY(-4px) scale(1.02);
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .stat,
  .stat .k::after,
  .stat-particle,
  .stat-icon {
    transition: none;
    animation: none;
  }
  
  .stat:hover {
    transform: none;
  }
}

/* Mouse tracking for dynamic glow */
.stat-row {
  cursor: none;
}

.stat {
  position: relative;
}