/**
 * Living Pantheon Animation Keyframes & Utilities
 *
 * Comprehensive animation system for living elements, breathing effects,
 * text drift, glitch, and ambient visual feedback.
 *
 * Features:
 * - Breathing animations with depth variation
 * - Text drift and floating effects
 * - Glow pulse for attention
 * - Glitch effect for digital aesthetics
 * - Fade transitions
 * - Shimmer for loading states
 * - Scan lines for retro feel
 * - Respects prefers-reduced-motion
 */

/* ============================================================================
   CSS Custom Properties (Animation Config)
   ============================================================================ */

:root {
  /* Breathing animation */
  --breathing-duration: 4s;
  --breathing-scale-min: 0.98;
  --breathing-scale-max: 1.02;
  --breathing-opacity-min: 0.7;
  --breathing-opacity-max: 1;

  /* Text drift animation */
  --drift-duration: 6s;
  --drift-distance: 8px;
  --drift-angle: 1.5deg;

  /* Glow pulse */
  --glow-duration: 3s;
  --glow-intensity-min: 0.4;
  --glow-intensity-max: 1;

  /* Glitch effect */
  --glitch-duration: 3s;
  --glitch-offset: 3px;
  --glitch-opacity: 0.8;

  /* Fade transitions */
  --fade-duration: 1s;
  --fade-delay: 0;

  /* Shimmer loading */
  --shimmer-duration: 2s;
  --shimmer-speed: 2s;

  /* Scan lines */
  --scan-duration: 8s;
}

/* ============================================================================
   BREATHING ANIMATION
   ============================================================================ */

@keyframes breathing {
  0% {
    transform: scale(var(--breathing-scale-min));
    opacity: var(--breathing-opacity-min);
  }
  25% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(var(--breathing-scale-max));
    opacity: var(--breathing-opacity-max);
  }
  75% {
    transform: scale(1);
    opacity: 0.85;
  }
  100% {
    transform: scale(var(--breathing-scale-min));
    opacity: var(--breathing-opacity-min);
  }
}

/* Subtle breathing variant */
@keyframes breathing-subtle {
  0% {
    transform: scale(0.995);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.005);
    opacity: 1;
  }
  100% {
    transform: scale(0.995);
    opacity: 0.85;
  }
}

/* Intense breathing variant */
@keyframes breathing-intense {
  0% {
    transform: scale(0.95);
    opacity: 0.6;
  }
  25% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.05);
    opacity: 1;
  }
  75% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(0.95);
    opacity: 0.6;
  }
}

/* ============================================================================
   TEXT DRIFT ANIMATION
   ============================================================================ */

@keyframes text-drift {
  0% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.8;
  }
  25% {
    transform: translate(calc(var(--drift-distance) * 0.5), calc(var(--drift-distance) * -0.7))
      rotate(var(--drift-angle) * 0.5);
  }
  50% {
    transform: translate(var(--drift-distance), calc(var(--drift-distance) * -1)) rotate(var(--drift-angle));
    opacity: 1;
  }
  75% {
    transform: translate(calc(var(--drift-distance) * 0.5), calc(var(--drift-distance) * -0.7))
      rotate(var(--drift-angle) * 0.5);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0.8;
  }
}

/* Horizontal drift variant */
@keyframes text-drift-horizontal {
  0% {
    transform: translateX(0);
    opacity: 0.8;
  }
  50% {
    transform: translateX(var(--drift-distance));
    opacity: 1;
  }
  100% {
    transform: translateX(0);
    opacity: 0.8;
  }
}

/* Vertical drift variant */
@keyframes text-drift-vertical {
  0% {
    transform: translateY(0);
    opacity: 0.8;
  }
  50% {
    transform: translateY(calc(var(--drift-distance) * -1));
    opacity: 1;
  }
  100% {
    transform: translateY(0);
    opacity: 0.8;
  }
}

/* ============================================================================
   GLOW PULSE ANIMATION
   ============================================================================ */

@keyframes glow-pulse {
  0% {
    text-shadow: 0 0 10px rgba(255, 255, 255, var(--glow-intensity-min));
    box-shadow: 0 0 20px rgba(255, 255, 255, var(--glow-intensity-min));
  }
  50% {
    text-shadow: 0 0 20px rgba(255, 255, 255, var(--glow-intensity-max));
    box-shadow: 0 0 40px rgba(255, 255, 255, var(--glow-intensity-max));
  }
  100% {
    text-shadow: 0 0 10px rgba(255, 255, 255, var(--glow-intensity-min));
    box-shadow: 0 0 20px rgba(255, 255, 255, var(--glow-intensity-min));
  }
}

/* Colored glow pulse variants */
@keyframes glow-pulse-cyan {
  0% {
    box-shadow: 0 0 10px rgba(0, 255, 255, var(--glow-intensity-min));
    text-shadow: 0 0 10px rgba(0, 255, 255, var(--glow-intensity-min));
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 255, 255, var(--glow-intensity-max));
    text-shadow: 0 0 20px rgba(0, 255, 255, var(--glow-intensity-max));
  }
  100% {
    box-shadow: 0 0 10px rgba(0, 255, 255, var(--glow-intensity-min));
    text-shadow: 0 0 10px rgba(0, 255, 255, var(--glow-intensity-min));
  }
}

@keyframes glow-pulse-magenta {
  0% {
    box-shadow: 0 0 10px rgba(255, 0, 255, var(--glow-intensity-min));
    text-shadow: 0 0 10px rgba(255, 0, 255, var(--glow-intensity-min));
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 0, 255, var(--glow-intensity-max));
    text-shadow: 0 0 20px rgba(255, 0, 255, var(--glow-intensity-max));
  }
  100% {
    box-shadow: 0 0 10px rgba(255, 0, 255, var(--glow-intensity-min));
    text-shadow: 0 0 10px rgba(255, 0, 255, var(--glow-intensity-min));
  }
}

/* ============================================================================
   GLITCH EFFECT ANIMATION
   ============================================================================ */

@keyframes glitch {
  0% {
    clip-path: inset(40% 0 61% 0);
    transform: translate(-var(--glitch-offset), -var(--glitch-offset));
  }
  20% {
    clip-path: inset(92% 0 1% 0);
    transform: translate(var(--glitch-offset), var(--glitch-offset));
  }
  40% {
    clip-path: inset(43% 0 1% 0);
    transform: translate(-var(--glitch-offset), var(--glitch-offset));
  }
  60% {
    clip-path: inset(25% 0 58% 0);
    transform: translate(var(--glitch-offset), -var(--glitch-offset));
  }
  80% {
    clip-path: inset(54% 0 7% 0);
    transform: translate(-var(--glitch-offset), var(--glitch-offset));
  }
  100% {
    clip-path: inset(58% 0 43% 0);
    transform: translate(var(--glitch-offset), -var(--glitch-offset));
  }
}

/* Glitch shadow (pseudo-element) */
@keyframes glitch-shadow {
  0% {
    text-shadow:
      -2px 0 #ff00ff,
      2px 0 #00ffff,
      0 0 10px rgba(255, 255, 255, 0.5);
  }
  50% {
    text-shadow:
      2px 0 #ff00ff,
      -2px 0 #00ffff,
      0 0 10px rgba(255, 255, 255, 0.5);
  }
  100% {
    text-shadow:
      -2px 0 #ff00ff,
      2px 0 #00ffff,
      0 0 10px rgba(255, 255, 255, 0.5);
  }
}

/* ============================================================================
   FADE IN / OUT ANIMATIONS
   ============================================================================ */

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fade-out {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

/* Fade in with scale */
@keyframes fade-in-scale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Fade in with slide up */
@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade in with slide down */
@keyframes fade-in-down {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================================
   SHIMMER EFFECT (Loading States)
   ============================================================================ */

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* Shimmer with opacity pulse */
@keyframes shimmer-pulse {
  0% {
    background-position: -1000px 0;
    opacity: 0.8;
  }
  50% {
    opacity: 1;
  }
  100% {
    background-position: 1000px 0;
    opacity: 0.8;
  }
}

/* ============================================================================
   SCAN LINES EFFECT (Retro Aesthetics)
   ============================================================================ */

@keyframes scan-lines {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 0 10px;
  }
}

/* Scan lines with opacity */
@keyframes scan-lines-fade {
  0% {
    background-position: 0 0;
    opacity: 0.03;
  }
  50% {
    opacity: 0.05;
  }
  100% {
    background-position: 0 10px;
    opacity: 0.03;
  }
}

/* ============================================================================
   MORPHING ANIMATIONS
   ============================================================================ */

@keyframes morph-shape {
  0% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }
  50% {
    border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
  }
  100% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }
}

@keyframes morph-colors {
  0% {
    filter: hue-rotate(0deg);
  }
  50% {
    filter: hue-rotate(180deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

/* ============================================================================
   UTILITY CLASSES - BREATHING
   ============================================================================ */

.breathing {
  animation: breathing var(--breathing-duration) infinite ease-in-out;
}

.breathing-subtle {
  animation: breathing-subtle var(--breathing-duration) infinite ease-in-out;
}

.breathing-intense {
  animation: breathing-intense var(--breathing-duration) infinite ease-in-out;
}

.living-element {
  animation: breathing var(--breathing-duration) infinite ease-in-out;
}

/* ============================================================================
   UTILITY CLASSES - TEXT DRIFT
   ============================================================================ */

.drifting-text {
  animation: text-drift var(--drift-duration) infinite ease-in-out;
}

.living-text {
  animation: text-drift var(--drift-duration) infinite ease-in-out;
}

.drifting-horizontal {
  animation: text-drift-horizontal var(--drift-duration) infinite ease-in-out;
}

.drifting-vertical {
  animation: text-drift-vertical var(--drift-duration) infinite ease-in-out;
}

/* ============================================================================
   UTILITY CLASSES - GLOW PULSE
   ============================================================================ */

.glow-pulse {
  animation: glow-pulse var(--glow-duration) infinite ease-in-out;
}

.glow-pulse-cyan {
  animation: glow-pulse-cyan var(--glow-duration) infinite ease-in-out;
}

.glow-pulse-magenta {
  animation: glow-pulse-magenta var(--glow-duration) infinite ease-in-out;
}

/* ============================================================================
   UTILITY CLASSES - GLITCH
   ============================================================================ */

.glitch {
  position: relative;
  animation: glitch var(--glitch-duration) infinite;
}

.glitch-text {
  animation: glitch-shadow var(--glitch-duration) infinite;
}

.no-glitch {
  animation: none !important;
}

/* ============================================================================
   UTILITY CLASSES - FADE
   ============================================================================ */

.fade-in {
  animation: fade-in var(--fade-duration) ease-out forwards;
  animation-delay: var(--fade-delay);
}

.fade-out {
  animation: fade-out var(--fade-duration) ease-out forwards;
  animation-delay: var(--fade-delay);
}

.fade-in-scale {
  animation: fade-in-scale var(--fade-duration) ease-out forwards;
  animation-delay: var(--fade-delay);
}

.fade-in-up {
  animation: fade-in-up var(--fade-duration) ease-out forwards;
  animation-delay: var(--fade-delay);
}

.fade-in-down {
  animation: fade-in-down var(--fade-duration) ease-out forwards;
  animation-delay: var(--fade-delay);
}

/* ============================================================================
   UTILITY CLASSES - SHIMMER
   ============================================================================ */

.shimmer {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 1000px 100%;
  animation: shimmer var(--shimmer-duration) infinite;
}

.shimmer-pulse {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  background-size: 1000px 100%;
  animation: shimmer-pulse var(--shimmer-duration) infinite;
}

/* ============================================================================
   UTILITY CLASSES - SCAN LINES
   ============================================================================ */

.scan-lines {
  background-image: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.15),
    rgba(0, 0, 0, 0.15) 1px,
    transparent 1px,
    transparent 2px
  );
  background-size: 100% 10px;
  animation: scan-lines var(--scan-duration) linear infinite;
}

.scan-lines-fade {
  background-image: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.1),
    rgba(0, 0, 0, 0.1) 1px,
    transparent 1px,
    transparent 2px
  );
  background-size: 100% 10px;
  animation: scan-lines-fade var(--scan-duration) ease-in-out infinite;
}

/* ============================================================================
   UTILITY CLASSES - MORPHING
   ============================================================================ */

.morph-image {
  animation: morph-shape 6s ease-in-out infinite;
}

.morphing-target {
  animation: morph-colors 8s ease-in-out infinite;
}

/* ============================================================================
   REDUCED MOTION ACCESSIBILITY
   ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  /* Disable all animations for users who prefer reduced motion */
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  /* Specific animation disables */
  .breathing,
  .breathing-subtle,
  .breathing-intense,
  .living-element,
  .drifting-text,
  .living-text,
  .drifting-horizontal,
  .drifting-vertical,
  .glow-pulse,
  .glow-pulse-cyan,
  .glow-pulse-magenta,
  .glitch,
  .glitch-text,
  .fade-in,
  .fade-out,
  .fade-in-scale,
  .fade-in-up,
  .fade-in-down,
  .shimmer,
  .shimmer-pulse,
  .scan-lines,
  .scan-lines-fade,
  .morph-image,
  .morphing-target {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ============================================================================
   ANIMATION DURATION UTILITIES
   ============================================================================ */

/* Duration modifiers */
.animate-slow {
  --breathing-duration: 6s;
  --drift-duration: 8s;
  --glow-duration: 4s;
  --glitch-duration: 4s;
  --fade-duration: 1.5s;
}

.animate-normal {
  --breathing-duration: 4s;
  --drift-duration: 6s;
  --glow-duration: 3s;
  --glitch-duration: 3s;
  --fade-duration: 1s;
}

.animate-fast {
  --breathing-duration: 2s;
  --drift-duration: 3s;
  --glow-duration: 2s;
  --glitch-duration: 2s;
  --fade-duration: 0.5s;
}

/* Animation delay utilities */
.delay-0 {
  --fade-delay: 0s;
}

.delay-1 {
  --fade-delay: 0.1s;
}

.delay-2 {
  --fade-delay: 0.2s;
}

.delay-3 {
  --fade-delay: 0.3s;
}

.delay-4 {
  --fade-delay: 0.4s;
}

.delay-5 {
  --fade-delay: 0.5s;
}