/* ============================================================
   ARCANA ORACLE - Animations & Transitions
   All keyframe animations, transition utilities, and motion
   Art Nouveau inspired mystical motion design
   ============================================================ */


/* ============================================================
   @KEYFRAMES - STAR TWINKLING
   Subtle brightness pulse for background stars
   ============================================================ */

@keyframes twinkle {
  0%, 100% {
    opacity: 0.15;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

/* Variant: slower, softer twinkle for large stars */
@keyframes twinkleSoft {
  0%, 100% {
    opacity: 0.3;
    filter: blur(0px);
  }
  40% {
    opacity: 0.8;
    filter: blur(0.5px);
  }
  60% {
    opacity: 0.9;
    filter: blur(0.5px);
  }
}

/* Variant: bright flash twinkle */
@keyframes twinkleBright {
  0%, 80%, 100% {
    opacity: 0.1;
  }
  85% {
    opacity: 1;
  }
  90% {
    opacity: 0.3;
  }
  95% {
    opacity: 0.8;
  }
}


/* ============================================================
   @KEYFRAMES - FLOAT
   Generic floating / levitation for cards and icons
   ============================================================ */

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* Variant: wider, slower float */
@keyframes floatWide {
  0%, 100% {
    transform: translateY(0) translateX(0);
  }
  25% {
    transform: translateY(-6px) translateX(3px);
  }
  50% {
    transform: translateY(-12px) translateX(0);
  }
  75% {
    transform: translateY(-6px) translateX(-3px);
  }
}

/* Variant: gentle rotation with float */
@keyframes floatRotate {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-6px) rotate(1deg);
  }
  66% {
    transform: translateY(-4px) rotate(-1deg);
  }
}


/* ============================================================
   @KEYFRAMES - CARD GLOW
   Pulsing gold border glow for selected cards
   ============================================================ */

@keyframes cardGlow {
  0%, 100% {
    box-shadow:
      0 0 12px rgba(201, 162, 78, 0.15),
      0 0 24px rgba(201, 162, 78, 0.05),
      0 4px 20px rgba(0, 0, 0, 0.4);
    border-color: rgba(201, 162, 78, 0.6);
  }
  50% {
    box-shadow:
      0 0 20px rgba(245, 215, 142, 0.3),
      0 0 40px rgba(201, 162, 78, 0.12),
      0 0 60px rgba(201, 162, 78, 0.05),
      0 4px 20px rgba(0, 0, 0, 0.4);
    border-color: rgba(245, 215, 142, 0.9);
  }
}

/* Variant: more intense glow for hand-hover state */
@keyframes cardGlowIntense {
  0%, 100% {
    box-shadow:
      0 0 20px rgba(245, 215, 142, 0.2),
      0 0 40px rgba(201, 162, 78, 0.1),
      0 8px 30px rgba(0, 0, 0, 0.4);
  }
  50% {
    box-shadow:
      0 0 30px rgba(245, 215, 142, 0.4),
      0 0 60px rgba(201, 162, 78, 0.2),
      0 0 80px rgba(201, 162, 78, 0.08),
      0 8px 30px rgba(0, 0, 0, 0.4);
  }
}

/* Variant: gentle, slow glow for ambient card state */
@keyframes cardGlowSubtle {
  0%, 100% {
    box-shadow:
      0 0 8px rgba(201, 162, 78, 0.08),
      0 4px 15px rgba(0, 0, 0, 0.4);
  }
  50% {
    box-shadow:
      0 0 16px rgba(201, 162, 78, 0.15),
      0 4px 15px rgba(0, 0, 0, 0.4);
  }
}


/* ============================================================
   @KEYFRAMES - SHIMMER
   Text shimmer effect for loading states and titles
   ============================================================ */

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

/* Variant: faster shimmer for loading text */
@keyframes shimmerFast {
  0% {
    background-position: 200% center;
  }
  100% {
    background-position: -200% center;
  }
}

/* Surface shimmer sweep (for buttons) */
@keyframes shimmerSweep {
  0% {
    left: -60%;
  }
  100% {
    left: 120%;
  }
}


/* ============================================================
   @KEYFRAMES - FADE IN UP
   Elements appearing with upward motion
   ============================================================ */

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(24px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Variant: fade in from further away */
@keyframes fadeInUpLarge {
  0% {
    opacity: 0;
    transform: translateY(48px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Variant: fade in with slight scale */
@keyframes fadeInScale {
  0% {
    opacity: 0;
    transform: scale(0.92) translateY(16px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* Fade in from left */
@keyframes fadeInLeft {
  0% {
    opacity: 0;
    transform: translateX(-24px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Fade in from right */
@keyframes fadeInRight {
  0% {
    opacity: 0;
    transform: translateX(24px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Simple fade in */
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

/* Fade out down */
@keyframes fadeOutDown {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(24px);
  }
}


/* ============================================================
   @KEYFRAMES - TYPEWRITER
   Cursor blink effect for streaming/loading text
   ============================================================ */

@keyframes typewriter {
  0%, 50% {
    opacity: 1;
  }
  51%, 100% {
    opacity: 0;
  }
}

/* Variant: smoother cursor blink */
@keyframes typewriterSmooth {
  0%, 40% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  90%, 100% {
    opacity: 1;
  }
}

/* Text reveal (left to right wipe) */
@keyframes textReveal {
  0% {
    clip-path: inset(0 100% 0 0);
  }
  100% {
    clip-path: inset(0 0 0 0);
  }
}


/* ============================================================
   @KEYFRAMES - PARTICLE FLOAT
   Gold particles drifting upward
   ============================================================ */

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(0) translateX(0) scale(0.5);
  }
  10% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
    transform: translateY(-50vh) translateX(20px) scale(1);
  }
  90% {
    opacity: 0.2;
  }
  100% {
    opacity: 0;
    transform: translateY(-100vh) translateX(-10px) scale(0.3);
  }
}

/* Variant: shorter float for card-local particles */
@keyframes particleFloatShort {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0.5);
  }
  20% {
    opacity: 0.9;
  }
  100% {
    opacity: 0;
    transform: translateY(-60px) translateX(var(--drift, 10px)) scale(0.2);
  }
}

/* Variant: spiral drift */
@keyframes particleSpiralFloat {
  0% {
    opacity: 0;
    transform: translateY(0) translateX(0) rotate(0deg) scale(0.3);
  }
  15% {
    opacity: 1;
  }
  50% {
    transform: translateY(-40px) translateX(15px) rotate(180deg) scale(0.8);
  }
  85% {
    opacity: 0.3;
  }
  100% {
    opacity: 0;
    transform: translateY(-80px) translateX(-5px) rotate(360deg) scale(0.1);
  }
}


/* ============================================================
   @KEYFRAMES - ORB GLOW
   Hand cursor glow ring pulsing
   ============================================================ */

@keyframes orbGlow {
  0%, 100% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1);
    box-shadow: 0 0 8px rgba(201, 162, 78, 0.2);
  }
  50% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1.15);
    box-shadow: 0 0 16px rgba(201, 162, 78, 0.3);
  }
}

/* Variant: double ring orb */
@keyframes orbGlowDouble {
  0%, 100% {
    opacity: 0.2;
    transform: translate(-50%, -50%) scale(1);
    border-width: 1px;
  }
  50% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1.2);
    border-width: 2px;
  }
}


/* ============================================================
   @KEYFRAMES - GRAB PULSE
   Hand grab feedback animation (quick pulse)
   ============================================================ */

@keyframes grabPulse {
  0% {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1);
    border-color: rgba(245, 215, 142, 0.6);
  }
  50% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(1.5);
    border-color: rgba(245, 215, 142, 0.3);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(2);
    border-color: rgba(245, 215, 142, 0);
  }
}

/* Variant: ripple wave on grab */
@keyframes grabRipple {
  0% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(0.8);
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(2.5);
  }
}


/* ============================================================
   ADDITIONAL KEYFRAMES
   ============================================================ */

/* Rotation for settings gear / loading spinner */
@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Subtle pulse for interactive hints */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.03);
  }
}

/* Breathing glow effect */
@keyframes breathe {
  0%, 100% {
    box-shadow: 0 0 10px rgba(201, 162, 78, 0.1);
  }
  50% {
    box-shadow: 0 0 25px rgba(201, 162, 78, 0.25);
  }
}

/* Shake for error / attention */
@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-3px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(3px);
  }
}

/* Scale bounce for card selection feedback */
@keyframes scaleBounce {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.08);
  }
  60% {
    transform: scale(0.97);
  }
  80% {
    transform: scale(1.02);
  }
  100% {
    transform: scale(1);
  }
}

/* Moon gentle sway */
@keyframes moonSway {
  0%, 100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

/* Gradient shift for backgrounds */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Underline draw animation */
@keyframes underlineDraw {
  0% {
    width: 0;
    opacity: 0;
  }
  100% {
    width: 100%;
    opacity: 1;
  }
}


/* ============================================================
   TRANSITION UTILITY CLASSES
   Smooth state changes for various elements
   ============================================================ */

/* Base transition presets */
.transition-all {
  transition: all 0.3s ease;
}

.transition-fast {
  transition: all 0.15s ease;
}

.transition-smooth {
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.transition-bounce {
  transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Opacity transitions */
.transition-opacity {
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.transition-opacity-slow {
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

/* Transform transitions */
.transition-transform {
  transition: transform 0.3s ease;
}

.transition-transform-smooth {
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Color transitions */
.transition-color {
  transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
}

/* Shadow transitions */
.transition-shadow {
  transition: box-shadow 0.3s ease;
}


/* ============================================================
   ANIMATION UTILITY CLASSES
   Apply animations declaratively
   ============================================================ */

/* Fade in animations */
.animate-fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in-up-slow {
  animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.5s ease-out forwards;
}

.animate-fade-in-right {
  animation: fadeInRight 0.5s ease-out forwards;
}

.animate-fade-in-scale {
  animation: fadeInScale 0.5s ease-out forwards;
}

/* Float animations */
.animate-float {
  animation: float 5s ease-in-out infinite;
}

.animate-float-slow {
  animation: float 7s ease-in-out infinite;
}

.animate-float-wide {
  animation: floatWide 8s ease-in-out infinite;
}

/* Glow animations */
.animate-glow {
  animation: cardGlow 2s ease-in-out infinite;
}

.animate-glow-subtle {
  animation: cardGlowSubtle 3s ease-in-out infinite;
}

.animate-breathe {
  animation: breathe 3s ease-in-out infinite;
}

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

/* Shimmer text */
.animate-shimmer {
  background-size: 200% 100%;
  animation: shimmer 3s ease-in-out infinite;
}

/* Shake for errors */
.animate-shake {
  animation: shake 0.5s ease-in-out;
}

/* Scale bounce */
.animate-bounce {
  animation: scaleBounce 0.5s ease-out;
}


/* ============================================================
   ANIMATION DELAY UTILITIES
   ============================================================ */

.animation-delay-100 { animation-delay: 0.1s; }
.animation-delay-200 { animation-delay: 0.2s; }
.animation-delay-300 { animation-delay: 0.3s; }
.animation-delay-400 { animation-delay: 0.4s; }
.animation-delay-500 { animation-delay: 0.5s; }
.animation-delay-600 { animation-delay: 0.6s; }
.animation-delay-700 { animation-delay: 0.7s; }
.animation-delay-800 { animation-delay: 0.8s; }
.animation-delay-1000 { animation-delay: 1.0s; }
.animation-delay-1200 { animation-delay: 1.2s; }
.animation-delay-1500 { animation-delay: 1.5s; }
.animation-delay-2000 { animation-delay: 2.0s; }


/* ============================================================
   ANIMATION FILL MODE UTILITIES
   ============================================================ */

.fill-forwards {
  animation-fill-mode: forwards;
}

.fill-both {
  animation-fill-mode: both;
}


/* ============================================================
   STAGGER ANIMATION CHILDREN
   Apply to parent to stagger child animations
   ============================================================ */

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

.stagger-children-slow > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-children-slow > *:nth-child(2) { animation-delay: 0.25s; }
.stagger-children-slow > *:nth-child(3) { animation-delay: 0.4s; }
.stagger-children-slow > *:nth-child(4) { animation-delay: 0.55s; }
.stagger-children-slow > *:nth-child(5) { animation-delay: 0.7s; }


/* ============================================================
   PARTICLE SYSTEM CLASSES
   Gold floating particles container and elements
   ============================================================ */

.particles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  bottom: -10px;
  width: 3px;
  height: 3px;
  background: rgba(201, 162, 78, 0.6);
  border-radius: 50%;
  animation: particleFloat var(--duration, 8s) ease-out infinite;
  animation-delay: var(--delay, 0s);
}

.particle--gold {
  background: rgba(245, 215, 142, 0.7);
  box-shadow: 0 0 4px rgba(245, 215, 142, 0.3);
}

.particle--small {
  width: 2px;
  height: 2px;
  opacity: 0.6;
}

.particle--large {
  width: 4px;
  height: 4px;
  box-shadow: 0 0 6px rgba(201, 162, 78, 0.4);
}

/* Card-local particles */
.card-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
  border-radius: 14px;
}

.card-particle {
  position: absolute;
  bottom: 10%;
  width: 2px;
  height: 2px;
  background: rgba(245, 215, 142, 0.5);
  border-radius: 50%;
  animation: particleFloatShort 3s ease-out infinite;
}


/* ============================================================
   VISIBILITY STATE CLASSES
   ============================================================ */

/* Hidden by default, animate in */
.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.is-visible {
  opacity: 1;
  visibility: visible;
}

/* Enter / exit states */
.enter {
  opacity: 0;
  transform: translateY(20px);
}

.enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.exit {
  opacity: 1;
  transform: translateY(0);
}

.exit-active {
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}


/* ============================================================
   REDUCED MOTION MEDIA QUERY
   Accessibility: respect 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;
  }

  .star {
    animation: none !important;
    opacity: 0.5;
  }

  .moon {
    animation: none !important;
  }

  .header h1 {
    animation: none !important;
    background-size: 100% 100%;
  }

  .card-flip {
    transition-duration: 0.01ms !important;
  }

  .card-flip.flipped {
    transform: rotateY(180deg);
  }

  .loading-spinner {
    animation: rotate 2s linear infinite !important;
  }

  .particle,
  .card-particle {
    display: none !important;
  }

  .animate-float,
  .animate-float-slow,
  .animate-float-wide {
    animation: none !important;
  }

  .animate-glow,
  .animate-glow-subtle,
  .animate-breathe {
    animation: none !important;
  }

  .hand-cursor::before {
    animation: none !important;
  }

  /* Keep essential visual feedback but remove decorative motion */
  .draw-btn::after {
    display: none;
  }

  .spread-btn::before {
    display: none;
  }

  .deck-card {
    transition: box-shadow 0.1s ease, border-color 0.1s ease !important;
  }

  .deck-card:hover {
    transform: translateY(-5px) !important;
  }
}


/* ============================================================
   PRINT STYLES
   Clean output for printing readings
   ============================================================ */

@media print {
  * {
    animation: none !important;
    transition: none !important;
  }

  body {
    background: #fff;
    color: #333;
  }

  body::before,
  .stars,
  .particles-container,
  .hand-cursor,
  .webcam-container,
  .settings-toggle,
  .draw-btn,
  .spread-section,
  .deck-area,
  .deck-hint,
  .reset-btn {
    display: none !important;
  }

  .card-back {
    border-color: #999;
    background: #f9f6f0;
  }

  .card-name {
    color: #333;
  }

  .interpretation {
    border-color: #ccc;
    background: #fff;
  }
}