/* ========================================
   arkdevbitrealm.com - Animation Library
   Scroll-driven, GPU-accelerated
   ======================================== */

/* Reveal animations triggered on scroll */
[data-anim] {
  opacity: 0;
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
  will-change: opacity, transform;
}

[data-anim="fade"] { transform: translateY(0); }
[data-anim="up"] { transform: translateY(40px); }
[data-anim="down"] { transform: translateY(-40px); }
[data-anim="left"] { transform: translateX(40px); }
[data-anim="right"] { transform: translateX(-40px); }
[data-anim="scale"] { transform: scale(0.92); }
[data-anim="rotate"] { transform: rotate(-4deg) scale(0.96); }

[data-anim].in-view {
  opacity: 1;
  transform: translate(0, 0) scale(1) rotate(0);
}

/* Stagger children */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

[data-stagger].in-view > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(2) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(3) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(4) { transition-delay: 0.35s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(5) { transition-delay: 0.45s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(6) { transition-delay: 0.55s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(7) { transition-delay: 0.65s; opacity: 1; transform: translateY(0); }
[data-stagger].in-view > *:nth-child(8) { transition-delay: 0.75s; opacity: 1; transform: translateY(0); }

/* Counter animation */
.count-up {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* Text gradient animation */
.text-shimmer {
  background: linear-gradient(90deg, #b4b4c8 0%, #ffffff 50%, #b4b4c8 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 4s linear infinite;
}

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

/* Glow pulse */
.glow-pulse {
  animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 229, 255, 0.3); }
  50% { box-shadow: 0 0 40px rgba(0, 229, 255, 0.6), 0 0 60px rgba(124, 77, 255, 0.4); }
}

/* Border trace */
.trace-border {
  position: relative;
}

.trace-border::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, transparent 30%, var(--accent-cyan), transparent 70%);
  -webkit-mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
  mask: linear-gradient(#000, #000) content-box, linear-gradient(#000, #000);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
  pointer-events: none;
}

.trace-border:hover::after { opacity: 1; }

/* Hover lift */
.hover-lift {
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease);
}

.hover-lift:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

/* Magnetic button */
.magnetic {
  transition: transform 0.4s var(--ease-soft);
}

/* Glitch text on hover */
.glitch {
  position: relative;
  display: inline-block;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}

.glitch::before {
  color: var(--accent-cyan);
  transform: translate(-2px, 0);
}

.glitch::after {
  color: var(--accent-pink);
  transform: translate(2px, 0);
}

.glitch:hover::before,
.glitch:hover::after { opacity: 0.8; }

/* Progress bar */
.progress {
  position: relative;
  width: 100%;
  height: 4px;
  background: var(--bg-card);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  position: absolute;
  top: 0; left: 0;
  height: 100%;
  background: var(--grad-primary);
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 1.5s var(--ease);
}

.progress.in-view .progress-bar { transform: scaleX(var(--p, 1)); }

/* Tabs */
.tabs {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.tab-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  width: fit-content;
  margin: 0 auto 32px;
}

.tab-btn {
  padding: 10px 22px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 999px;
  transition: all 0.3s var(--ease);
}

.tab-btn:hover { color: var(--text-primary); }

.tab-btn.active {
  background: var(--text-primary);
  color: var(--bg-primary);
}

.tab-panel { display: none; animation: fadeIn 0.5s var(--ease); }
.tab-panel.active { display: block; }

/* Code block */
.code {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-x: auto;
}

.code .key { color: var(--accent-pink); }
.code .val { color: var(--accent-cyan); }
.code .com { color: var(--text-muted); font-style: italic; }

/* Loader */
.loader {
  width: 24px; height: 24px;
  border: 2px solid var(--border-default);
  border-top-color: var(--accent-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Toast */
.toast {
  position: fixed;
  bottom: 32px; right: 32px;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  z-index: 1000;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.4s var(--ease);
}

.toast.show { opacity: 1; transform: translateY(0); }

.toast.success { border-color: var(--accent-green); }
.toast.error { border-color: var(--accent-pink); }

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.open { display: flex; animation: fadeIn 0.3s var(--ease); }

.modal-content {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 40px;
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all 0.2s var(--ease);
}

.modal-close:hover { color: var(--text-primary); background: var(--bg-glass); }

/* Accordion */
.accordion-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--bg-card);
}

.accordion-trigger {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  transition: background 0.3s var(--ease);
}

.accordion-trigger:hover { background: var(--bg-tertiary); }

.accordion-icon {
  width: 20px; height: 20px;
  transition: transform 0.3s var(--ease);
}

.accordion-item.open .accordion-icon { transform: rotate(45deg); }

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s var(--ease);
}

.accordion-item.open .accordion-content { max-height: 800px; }

.accordion-body {
  padding: 0 24px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}