/**
 * LifeOS Premium — Animation CSS Classes
 * Sprint 028 | Version 2.0.0
 * 
 * Utility classes for declarative animations.
 * Works in conjunction with motion.js.
 */

/* ============================================================
   ANIMATION UTILITIES
   ============================================================ */
.animate-fade-in       { animation: fadeIn 200ms var(--ease-out) forwards; }
.animate-fade-in-up    { animation: slideUp 300ms var(--ease-spring) forwards; }
.animate-fade-in-down  { animation: slideDown 300ms var(--ease-spring) forwards; }
.animate-fade-in-left  { animation: slideLeft 300ms var(--ease-out) forwards; }
.animate-fade-in-right { animation: slideRight 300ms var(--ease-out) forwards; }
.animate-scale-in      { animation: scaleIn 200ms var(--ease-spring) forwards; }
.animate-bounce-in     { animation: bounceIn 500ms ease-out forwards; }
.animate-float         { animation: float 4s ease-in-out infinite; }
.animate-pulse         { animation: pulse 2s cubic-bezier(0.4,0,0.6,1) infinite; }
.animate-spin          { animation: spin 1s linear infinite; }
.animate-glow-pulse    { animation: glowPulse 2.5s ease-in-out infinite; }
.animate-heartbeat     { animation: heartbeat 1.5s ease-in-out infinite; }
.animate-gradient      {
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
}

/* Delay utilities */
.delay-50   { animation-delay: 50ms; }
.delay-100  { animation-delay: 100ms; }
.delay-150  { animation-delay: 150ms; }
.delay-200  { animation-delay: 200ms; }
.delay-300  { animation-delay: 300ms; }
.delay-400  { animation-delay: 400ms; }
.delay-500  { animation-delay: 500ms; }
.delay-600  { animation-delay: 600ms; }
.delay-700  { animation-delay: 700ms; }
.delay-1000 { animation-delay: 1000ms; }

/* Duration utilities */
.duration-fast     { animation-duration: 100ms; }
.duration-normal   { animation-duration: 200ms; }
.duration-moderate { animation-duration: 300ms; }
.duration-slow     { animation-duration: 500ms; }
.duration-slower   { animation-duration: 700ms; }

/* ============================================================
   SKELETON LOADING
   ============================================================ */
.skeleton-wrapper {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 0;
}

.skeleton-pulse {
  background: linear-gradient(
    90deg,
    var(--surface-200) 25%,
    var(--surface-300) 50%,
    var(--surface-200) 75%
  );
  background-size: 400% 100%;
  animation: shimmer 1.8s ease-in-out infinite;
  border-radius: var(--radius-md);
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.skeleton-title {
  height: 20px;
  width: 60%;
  border-radius: var(--radius-md);
}

.skeleton-line {
  height: 14px;
  border-radius: var(--radius-md);
}

.skeleton-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skeleton-circle {
  border-radius: var(--radius-full);
}

.skeleton-button {
  height: var(--btn-height-md);
  width: 120px;
  border-radius: var(--radius-lg);
}

.skeleton-badge {
  height: 24px;
  width: 64px;
  border-radius: var(--radius-full);
}

/* ============================================================
   TRANSITION UTILITIES
   ============================================================ */
.transition-all      { transition: all var(--duration-normal) var(--ease-in-out); }
.transition-colors   { transition: color var(--duration-normal) var(--ease-in-out),
                                   background-color var(--duration-normal) var(--ease-in-out),
                                   border-color var(--duration-normal) var(--ease-in-out); }
.transition-opacity  { transition: opacity var(--duration-normal) var(--ease-in-out); }
.transition-transform{ transition: transform var(--duration-normal) var(--ease-spring); }
.transition-shadow   { transition: box-shadow var(--duration-normal) var(--ease-in-out); }
.transition-fast     { transition-duration: var(--duration-fast) !important; }
.transition-slow     { transition-duration: var(--duration-slow) !important; }

/* ============================================================
   HOVER EFFECTS
   ============================================================ */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-spring),
              box-shadow var(--duration-normal) var(--ease-in-out);
}
.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--elevation-3);
}

.hover-scale {
  transition: transform var(--duration-normal) var(--ease-spring);
}
.hover-scale:hover { transform: scale(1.02); }

.hover-glow {
  transition: box-shadow var(--duration-moderate) var(--ease-in-out);
}
.hover-glow:hover { box-shadow: var(--elevation-glow-primary); }

.hover-bright {
  transition: filter var(--duration-normal) var(--ease-in-out);
}
.hover-bright:hover { filter: brightness(1.1); }

/* ============================================================
   ACTIVE / PRESS STATES
   ============================================================ */
.active-scale:active   { transform: scale(0.96); }
.active-shrink:active  { transform: scale(0.94); }
.active-press:active   { transform: translateY(1px); }

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-default);
  border-top-color: var(--color-primary-500);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

.spinner-sm { width: 14px; height: 14px; border-width: 2px; }
.spinner-md { width: 20px; height: 20px; border-width: 2px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }
.spinner-xl { width: 48px; height: 48px; border-width: 4px; }

.spinner-primary {
  border-color: rgba(99,102,241,0.2);
  border-top-color: var(--color-primary-500);
}
.spinner-success {
  border-color: rgba(16,185,129,0.2);
  border-top-color: var(--color-success-500);
}
.spinner-white {
  border-color: rgba(255,255,255,0.2);
  border-top-color: white;
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.progress-track {
  width: 100%;
  height: 6px;
  background: var(--surface-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  transition: width var(--duration-slow) var(--ease-out);
}

.progress-fill-success { background: var(--gradient-success); }
.progress-fill-warning { background: var(--gradient-warning); }
.progress-fill-danger  { background: var(--gradient-danger); }

.progress-track-sm { height: 4px; }
.progress-track-lg { height: 8px; }
.progress-track-xl { height: 12px; }

/* Animated progress */
.progress-animated .progress-fill {
  animation: progressFill var(--duration-slow) var(--ease-out) forwards;
}

/* ============================================================
   RIPPLE CONTAINER
   ============================================================ */
.ripple-container {
  position: relative;
  overflow: hidden;
}

/* ============================================================
   GLOW EFFECTS
   ============================================================ */
.glow-primary { box-shadow: var(--elevation-glow-primary); }
.glow-success { box-shadow: var(--elevation-glow-success); }
.glow-danger  { box-shadow: var(--elevation-glow-danger); }

.glow-text-primary {
  text-shadow: 0 0 20px rgba(99,102,241,0.5);
}

/* ============================================================
   TYPING INDICATOR
   ============================================================ */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
}

.typing-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--text-tertiary);
  animation: typewriter 1.2s ease-in-out infinite;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

/* ============================================================
   SCORE / RING ANIMATION
   ============================================================ */
.score-ring {
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.score-ring::before {
  content: '';
  position: absolute;
  inset: 10px;
  background: var(--bg-card);
  border-radius: var(--radius-full);
}

.score-ring-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

/* ============================================================
   REDUCED MOTION OVERRIDES
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .animate-fade-in,
  .animate-fade-in-up,
  .animate-fade-in-down,
  .animate-fade-in-left,
  .animate-fade-in-right,
  .animate-scale-in,
  .animate-bounce-in,
  .animate-float,
  .animate-glow-pulse,
  .animate-heartbeat,
  .animate-gradient {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .skeleton-pulse {
    animation: none;
    background: var(--surface-200);
  }

  .hover-lift:hover,
  .hover-scale:hover {
    transform: none;
  }
}