/* ==========================================================================
   PizzaScience — Animations
   Micro-animations for engagement: load transitions, value updates,
   slider interactions, and hover effects.
   ========================================================================== */

/* -----------------------------------------------------------------------
   Page Load — Staggered Fade-In
   ----------------------------------------------------------------------- */
@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeSlideUp var(--duration-slow) var(--ease-out) both;
}

/* Stagger children */
.animate-in:nth-child(1) { animation-delay: 0ms; }
.animate-in:nth-child(2) { animation-delay: 80ms; }
.animate-in:nth-child(3) { animation-delay: 160ms; }
.animate-in:nth-child(4) { animation-delay: 240ms; }
.animate-in:nth-child(5) { animation-delay: 320ms; }
.animate-in:nth-child(6) { animation-delay: 400ms; }

/* -----------------------------------------------------------------------
   Value Pulse — Brief scale on update
   ----------------------------------------------------------------------- */
@keyframes valuePulse {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.04); }
  100% { transform: scale(1); }
}

.value-pulse {
  animation: valuePulse 250ms var(--ease-out);
}

/* -----------------------------------------------------------------------
   Card Hover Lift
   ----------------------------------------------------------------------- */
.recipe-card {
  transition: transform var(--duration-normal) var(--ease-default),
              box-shadow var(--duration-normal) var(--ease-default);
}

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

/* -----------------------------------------------------------------------
   Button Press
   ----------------------------------------------------------------------- */
.segmented__btn:active:not(.segmented__btn--active) {
  transform: scale(0.96);
}

/* -----------------------------------------------------------------------
   Sidebar link hover shimmer
   ----------------------------------------------------------------------- */
.sidebar__nav-link {
  position: relative;
  overflow: hidden;
}

.sidebar__nav-link::after {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: -100%;
  inline-size: 100%;
  block-size: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgb(255 255 255 / 0.04),
    transparent
  );
  transition: inset-inline-start var(--duration-slow) var(--ease-default);
  pointer-events: none;
}

.sidebar__nav-link:hover::after {
  inset-inline-start: 100%;
}

/* -----------------------------------------------------------------------
   Premium badge glow
   ----------------------------------------------------------------------- */
@keyframes goldGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgb(212 168 83 / 0.4); }
  50%      { box-shadow: 0 0 12px 2px rgb(212 168 83 / 0.3); }
}

.premium-lock__badge {
  animation: goldGlow 3s var(--ease-default) infinite;
}

/* -----------------------------------------------------------------------
   Upgrade button shine
   ----------------------------------------------------------------------- */
.sidebar__upgrade-btn {
  position: relative;
  overflow: hidden;
}

.sidebar__upgrade-btn::after {
  content: '';
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: -150%;
  inline-size: 100%;
  block-size: 100%;
  background: linear-gradient(
    105deg,
    transparent 40%,
    rgb(255 255 255 / 0.25) 50%,
    transparent 60%
  );
  animation: btnShine 4s var(--ease-default) infinite;
}

@keyframes btnShine {
  0%   { inset-inline-start: -150%; }
  30%  { inset-inline-start: 150%; }
  100% { inset-inline-start: 150%; }
}

/* -----------------------------------------------------------------------
   Hydration tag color transitions
   ----------------------------------------------------------------------- */
.hydration-tag {
  transition: background-color var(--duration-slow) var(--ease-default),
              color var(--duration-slow) var(--ease-default);
}

/* -----------------------------------------------------------------------
   Reduced Motion
   ----------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}