/* =====================================================
 * DecryptCode INC — Animations
 * Scroll reveals, micro-interactions, keyframes
 * Uses IntersectionObserver (JS activates .is-visible)
 * Last Updated: February 21, 2026
 * ===================================================== */

/* ═══════════════════════════════════════════
 * GLOBAL PREFERENCES
 * ═══════════════════════════════════════════ */

@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 REVEAL — Base
 * Elements begin hidden; JS adds .is-visible
 * ═══════════════════════════════════════════ */

[data-animate] {
  opacity: 0;
  will-change: opacity, transform;
}

[data-animate].is-visible {
  opacity: 1;
}

/* ── Fade In Up ── */
[data-animate="fade-up"] {
  transform: translateY(24px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

[data-animate="fade-up"].is-visible {
  transform: translateY(0);
}

/* ── Fade In Down ── */
[data-animate="fade-down"] {
  transform: translateY(-24px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

[data-animate="fade-down"].is-visible {
  transform: translateY(0);
}

/* ── Fade In Left ── */
[data-animate="fade-left"] {
  transform: translateX(-24px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

[data-animate="fade-left"].is-visible {
  transform: translateX(0);
}

/* ── Fade In Right ── */
[data-animate="fade-right"] {
  transform: translateX(24px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

[data-animate="fade-right"].is-visible {
  transform: translateX(0);
}

/* ── Scale Up ── */
[data-animate="scale-up"] {
  transform: scale(0.92);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

[data-animate="scale-up"].is-visible {
  transform: scale(1);
}

/* ── Fade Only ── */
[data-animate="fade"] {
  transition: opacity var(--transition-slow);
}

/* ═══════════════════════════════════════════
 * STAGGER DELAYS
 * data-delay="1" through "8"
 * ═══════════════════════════════════════════ */

[data-delay="1"] { transition-delay: 0.1s; }
[data-delay="2"] { transition-delay: 0.2s; }
[data-delay="3"] { transition-delay: 0.3s; }
[data-delay="4"] { transition-delay: 0.4s; }
[data-delay="5"] { transition-delay: 0.5s; }
[data-delay="6"] { transition-delay: 0.6s; }
[data-delay="7"] { transition-delay: 0.7s; }
[data-delay="8"] { transition-delay: 0.8s; }

/* ═══════════════════════════════════════════
 * COUNTER / COUNT-UP
 * Animated numbers (JS handles tween)
 * ═══════════════════════════════════════════ */

[data-count] {
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* ═══════════════════════════════════════════
 * LINE DRAW
 * SVG stroke-dashoffset animation
 * ═══════════════════════════════════════════ */

.draw-line {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transition: stroke-dashoffset 1.5s ease-out;
}

.draw-line.is-visible {
  stroke-dashoffset: 0;
}

/* ═══════════════════════════════════════════
 * KEYFRAME ANIMATIONS
 * ═══════════════════════════════════════════ */

/* Pulse glow — used by metric beacons */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 rgba(129, 140, 248, 0);
  }
  50% {
    box-shadow: 0 0 20px rgba(129, 140, 248, 0.15);
  }
}

/* Typing cursor blink */
@keyframes blink-cursor {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.typing-cursor::after {
  content: '|';
  color: var(--accent-3);
  animation: blink-cursor 0.8s step-end infinite;
  margin-left: 1px;
}

/* Shimmer / skeleton loader */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    var(--bg-secondary) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

/* Floating (for decorative elements) */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.float {
  animation: float 4s ease-in-out infinite;
}

/* Spin (loading) */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-default);
  border-top-color: var(--accent-2);
  border-radius: var(--radius-full);
  animation: spin 0.6s linear infinite;
}

/* ═══════════════════════════════════════════
 * MICRO-INTERACTIONS
 * ═══════════════════════════════════════════ */

/* Hover lift (generic) */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Active press */
.active-press:active {
  transform: scale(0.98);
}

/* Link underline animation */
.link-animate {
  position: relative;
  text-decoration: none;
}

.link-animate::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gradient-border);
  transition: width var(--transition-base);
}

.link-animate:hover::after {
  width: 100%;
}

/* Icon rotate on hover (arrow, chevron) */
.icon-rotate-hover {
  transition: transform var(--transition-fast);
}

.icon-rotate-hover:hover {
  transform: rotate(45deg);
}

/* Grid node pop (hero decoration) */
@keyframes node-pop {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  60% {
    transform: scale(1.2);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 0.6;
  }
}

.node-dot {
  width: 4px;
  height: 4px;
  background: var(--accent-2);
  border-radius: var(--radius-full);
  position: absolute;
  animation: node-pop 0.6s ease-out forwards;
  opacity: 0;
}

/* ═══════════════════════════════════════════
 * PAGE TRANSITION
 * ═══════════════════════════════════════════ */

.page-enter {
  opacity: 0;
  animation: page-fade-in 0.4s ease forwards;
}

@keyframes page-fade-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}