/* ══════════════════════════════════════════════════════════════
   ANIMATIONS.CSS — Keyframes, Transitions, Scroll Reveal
   Crystal Waters Design System
   ══════════════════════════════════════════════════════════════ */

/* ═══ SCROLL REVEAL VARIANTS ═══ */
.reveal--slide-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--slide-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal--slide-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--slide-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal--scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--scale.revealed {
  opacity: 1;
  transform: scale(1);
}

.reveal--fade {
  opacity: 0;
  transition: opacity 0.8s ease;
}

.reveal--fade.revealed {
  opacity: 1;
}

/* ═══ STAGGER CHILDREN ═══ */
.stagger-children > * {
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-children.revealed > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(3) { transition-delay: 0.15s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(4) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(5) { transition-delay: 0.25s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(6) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(7) { transition-delay: 0.35s; opacity: 1; transform: translateY(0); }
.stagger-children.revealed > *:nth-child(8) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }

/* ═══ COUNTER ANIMATION ═══ */
.counter {
  display: inline-block;
}

.counter[data-animated="true"] {
  animation: counterPop 0.3s ease;
}

@keyframes counterPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* ═══ PULSE ═══ */
.pulse {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ═══ FLOAT ═══ */
.float {
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ═══ SPIN SLOW ═══ */
.spin-slow {
  animation: spinSlow 20s linear infinite;
}

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

/* ═══ SHIMMER (placeholder loading) ═══ */
.shimmer {
  background: linear-gradient(90deg, var(--pfizer-blue-light) 25%, var(--ocean-teal-light) 50%, var(--pfizer-blue-light) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

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

/* ═══ LINE DRAW (for timeline) ═══ */
.line-draw {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transition: stroke-dashoffset 2s ease;
}

.line-draw.revealed {
  stroke-dashoffset: 0;
}

/* ═══ PROGRESS BAR ANIMATION ═══ */
.pipeline-bar__fill {
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.pipeline-bar.revealed .pipeline-bar__fill--preclinical { width: 20%; }
.pipeline-bar.revealed .pipeline-bar__fill--phase1 { width: 40%; }
.pipeline-bar.revealed .pipeline-bar__fill--phase2 { width: 65%; }
.pipeline-bar.revealed .pipeline-bar__fill--phase3 { width: 90%; }

/* ═══ HOVER LIFT ═══ */
.hover-lift {
  transition: var(--transition-smooth);
}

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

/* ═══ LINK UNDERLINE ANIMATION ═══ */
.link-animate {
  position: relative;
  display: inline-block;
}

.link-animate::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--pfizer-blue);
  transition: width 0.3s ease;
}

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

/* ═══ REDUCE 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;
  }

  .reveal,
  .reveal--slide-left,
  .reveal--slide-right,
  .reveal--scale,
  .reveal--fade {
    opacity: 1;
    transform: none;
  }

  .stagger-children > * {
    opacity: 1;
    transform: none;
  }
}