/* ============================================
   TOOLSSIFY  -  Animations
   Subtle, performance-first animations.
   Hover, scroll-reveal, transitions, ripple.
   ============================================ */

/* ---------- Keyframe Animations ---------- */

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@keyframes slideDown {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

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

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

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes bounceIn {
  0%   { transform: scale(0.3); opacity: 0; }
  50%  { transform: scale(1.05); }
  70%  { transform: scale(0.9); }
  100% { transform: scale(1); opacity: 1; }
}


/* ---------- Animation Utility Classes ---------- */

.animate-fade-in {
  animation: fadeIn var(--transition-slow) ease-out forwards;
}

.animate-fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out forwards;
}

.animate-fade-in-down {
  animation: fadeInDown var(--transition-base) ease-out forwards;
}

.animate-scale-in {
  animation: scaleIn var(--transition-slow) ease-out forwards;
}

.animate-slide-in-right {
  animation: slideInRight var(--transition-slow) ease-out forwards;
}

.animate-slide-in-left {
  animation: slideInLeft var(--transition-slow) ease-out forwards;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}


/* ---------- Scroll Reveal ---------- */
/* Elements with this class start hidden, then animate in 
   when they enter the viewport via Intersection Observer */

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered reveal for child elements */
.scroll-reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.scroll-reveal-stagger.revealed > *:nth-child(1)  { transition-delay: 0ms; }
.scroll-reveal-stagger.revealed > *:nth-child(2)  { transition-delay: 80ms; }
.scroll-reveal-stagger.revealed > *:nth-child(3)  { transition-delay: 160ms; }
.scroll-reveal-stagger.revealed > *:nth-child(4)  { transition-delay: 240ms; }
.scroll-reveal-stagger.revealed > *:nth-child(5)  { transition-delay: 320ms; }
.scroll-reveal-stagger.revealed > *:nth-child(6)  { transition-delay: 400ms; }
.scroll-reveal-stagger.revealed > *:nth-child(7)  { transition-delay: 480ms; }
.scroll-reveal-stagger.revealed > *:nth-child(8)  { transition-delay: 560ms; }
.scroll-reveal-stagger.revealed > *:nth-child(9)  { transition-delay: 640ms; }
.scroll-reveal-stagger.revealed > *:nth-child(10) { transition-delay: 720ms; }

.scroll-reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}


/* ---------- Hover Effects ---------- */

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

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Gentle scale on hover */
.hover-scale {
  transition: transform var(--transition-base);
}

.hover-scale:hover {
  transform: scale(1.02);
}

/* Glow effect on hover (for cards) */
.hover-glow {
  transition: box-shadow var(--transition-slow);
}

.hover-glow:hover {
  box-shadow: 0 0 0 1px var(--color-primary-200),
              0 8px 24px rgba(99, 102, 241, 0.08);
}

/* Border color on hover */
.hover-border {
  transition: border-color var(--transition-fast);
}

.hover-border:hover {
  border-color: var(--color-primary-300);
}


/* ---------- Button Ripple Effect ---------- */

.ripple-container {
  position: relative;
  overflow: hidden;
}

.ripple-container .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

/* Dark ripple variant (for light buttons) */
.ripple-container.ripple-dark .ripple {
  background: rgba(0, 0, 0, 0.06);
}


/* ---------- Smooth Dropdown ---------- */

.dropdown-enter {
  opacity: 0;
  transform: translateY(-8px) scale(0.96);
  pointer-events: none;
  transition: opacity var(--transition-fast),
              transform var(--transition-fast);
}

.dropdown-enter.active {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}


/* ---------- Smooth Page Transitions ---------- */

.page-transition-enter {
  animation: fadeIn var(--transition-slow) ease-out;
}

.page-transition-exit {
  animation: fadeIn var(--transition-fast) ease-in reverse;
}


/* ---------- Skeleton Loading ---------- */

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

.skeleton-text {
  height: 14px;
  margin-bottom: 8px;
  border-radius: var(--radius-xs);
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-heading {
  height: 24px;
  width: 40%;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}


/* ---------- Reduced Motion ---------- */
/* Respects user preference for reduced 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;
  }
  
  .scroll-reveal {
    opacity: 1;
    transform: none;
  }
  
  .scroll-reveal-stagger > * {
    opacity: 1;
    transform: none;
  }
}