/**
 * Decoded Article Animations - Mobile-First
 * Scroll-triggered reveal animations.
 */

/* -- Base: hide before animation -- */
.anim-slide-right,
.anim-slide-left,
.anim-slide-right-box,
.anim-fade-up {
  opacity: 0;
  will-change: transform, opacity;
}

.anim-counter {
  display: inline-block;
}

/* -- Section heads: slide from left with red underline grow -- */
.anim-slide-right {
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.anim-slide-right.anim-visible {
  opacity: 1;
  transform: translateX(0);
}

/* -- Perspective box left -- */
.anim-slide-left {
  transform: translateX(-30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.anim-slide-left.anim-visible {
  opacity: 1;
  transform: translateX(0);
}

/* -- Perspective box right -- */
.anim-slide-right-box {
  transform: translateX(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.anim-slide-right-box.anim-visible {
  opacity: 1;
  transform: translateX(0);
}

/* -- Fade up: tables, callouts, bottom line, sidebar -- */
.anim-fade-up {
  transform: translateY(20px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.anim-fade-up.anim-visible {
  opacity: 1;
  transform: translateY(0);
}

/* -- Data table: container border reveal -- */
.data-table {
  transition: opacity 0.3s ease;
}
.data-table thead {
  position: relative;
}
.data-table thead::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: #E53935;
  transition: width 0.6s ease 0.2s;
}
.data-table.anim-visible thead::after {
  width: 100%;
}

/* -- Counter pulse on complete -- */
.anim-counter.anim-visible {
  animation: counterPulse 0.3s ease 1.4s;
}

@keyframes counterPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); color: #E53935; }
  100% { transform: scale(1); }
}

/* -- Callout box: border-left grow -- */
.callout-box {
  border-left: 3px solid transparent;
  transition: border-color 0.4s ease 0.3s;
}
.callout-box.anim-fade-up {
  border-left-color: transparent;
}
.callout-box.anim-visible {
  border-left-color: #bfdbfe;
}

/* -- Bottom line: purple border grow -- */
.bottom-line {
  border-left: 4px solid transparent;
  transition: border-color 0.4s ease 0.3s;
}
.bottom-line.anim-fade-up {
  border-left-color: transparent;
}
.bottom-line.anim-visible {
  border-left-color: #7C3AED;
}

/* -- Sidebar boxes stagger -- */
.sidebar-box.anim-fade-up:nth-child(1) { transition-delay: 0ms; }
.sidebar-box.anim-fade-up:nth-child(2) { transition-delay: 150ms; }
.sidebar-box.anim-fade-up:nth-child(3) { transition-delay: 300ms; }

/* -- Perspective boxes: subtle shadow on reveal -- */
.perspective-box.anim-visible {
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.5s ease 0.3s;
}

/* -- Stat bar: animated horizontal fill bars for key numbers -- */
.stat-bar-container {
  margin: 24px 0;
}
.stat-bar-row {
  margin-bottom: 16px;
}
.stat-bar-label {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: #333;
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}
.stat-bar-label .stat-bar-value {
  color: #E53935;
  font-weight: 700;
}
.stat-bar-track {
  height: 8px;
  background: #e5e5e5;
  border-radius: 4px;
  overflow: hidden;
}
.stat-bar-fill {
  height: 100%;
  border-radius: 4px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.stat-bar-fill.red { background: linear-gradient(90deg, #E53935, #ff6659); }
.stat-bar-fill.amber { background: linear-gradient(90deg, #f59e0b, #fbbf24); }
.stat-bar-fill.green { background: linear-gradient(90deg, #10b981, #34d399); }
.stat-bar-fill.purple { background: linear-gradient(90deg, #7C3AED, #a78bfa); }

.stat-bar-container.anim-visible .stat-bar-fill {
  width: var(--fill-width);
}

/* -- Respect reduced motion -- */
@media (prefers-reduced-motion: reduce) {
  .anim-slide-right,
  .anim-slide-left,
  .anim-slide-right-box,
  .anim-fade-up,
  .anim-counter {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    animation: none !important;
  }
  .stat-bar-fill {
    width: var(--fill-width) !important;
    transition: none !important;
  }
}

/* -- Mobile optimizations -- */
@media (max-width: 768px) {
  .anim-slide-right,
  .anim-slide-left,
  .anim-slide-right-box {
    transform: translateX(0) translateY(15px);
  }
  .anim-fade-up {
    transform: translateY(15px);
  }
}