/**
 * HERITAGE HARDWOOD FLOORS NWA — ANIMATIONS
 * All CSS3 keyframes and animation utilities
 * Hardware-accelerated transforms only: translate, scale, rotate, opacity
 */

/* ═══════════════════════════════════════════════════════════════════════════
   KEYFRAME DEFINITIONS
   ═══════════════════════════════════════════════════════════════════════════ */

/* Fade animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

/* VISUAL-TACTIC: Staggered Reveal - Slide up with fade */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale animations */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleOut {
  from {
    opacity: 1;
    transform: scale(1);
  }
  to {
    opacity: 0;
    transform: scale(0.9);
  }
}

/* VISUAL-TACTIC: Kinetic Typography - Letter by letter reveal */
@keyframes letterReveal {
  from {
    opacity: 0;
    transform: translateY(100%) rotateX(-80deg);
  }
  to {
    opacity: 1;
    transform: translateY(0) rotateX(0);
  }
}

/* VISUAL-TACTIC: Counter Animation */
@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Subtle float for hero elements */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Pulse for attention */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Glow pulse for CTAs */
@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px rgba(212, 168, 83, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(212, 168, 83, 0.4);
  }
}

/* Shimmer effect for loading states */
@keyframes shimmer {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}

/* Rotation for loaders */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* VISUAL-TACTIC: Particle System - Drift animation */
@keyframes drift {
  0% {
    transform: translate(0, 0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translate(var(--drift-x, 100px), var(--drift-y, -100px)) rotate(360deg);
    opacity: 0;
  }
}

/* Grain texture subtle movement */
@keyframes grainShift {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-1%, -1%); }
  20% { transform: translate(1%, 1%); }
  30% { transform: translate(-1%, 1%); }
  40% { transform: translate(1%, -1%); }
  50% { transform: translate(-1%, 0); }
  60% { transform: translate(1%, 0); }
  70% { transform: translate(0, 1%); }
  80% { transform: translate(0, -1%); }
  90% { transform: translate(1%, 1%); }
}

/* SVG morph preparation */
@keyframes morphPath {
  0%, 100% { d: path(var(--morph-start)); }
  50% { d: path(var(--morph-end)); }
}

/* Underline expand for nav links */
@keyframes underlineExpand {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* Card lift on hover */
@keyframes cardLift {
  from {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
  }
  to {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   ANIMATION UTILITY CLASSES
   ═══════════════════════════════════════════════════════════════════════════ */

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

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

.animate-fade-in-down {
  animation: fadeInDown var(--dur-slow) var(--ease-expo) forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft var(--dur-slow) var(--ease-expo) forwards;
}

.animate-fade-in-right {
  animation: fadeInRight var(--dur-slow) var(--ease-expo) forwards;
}

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

.animate-float {
  animation: float 6s ease-in-out infinite;
}

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

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

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

/* ═══════════════════════════════════════════════════════════════════════════
   SCROLL-TRIGGERED ANIMATION STATES
   ═══════════════════════════════════════════════════════════════════════════ */

/* Initial hidden state for scroll animations */
[data-animate] {
  opacity: 0;
}

[data-animate="fade-up"] {
  transform: translateY(30px);
}

[data-animate="fade-down"] {
  transform: translateY(-30px);
}

[data-animate="fade-left"] {
  transform: translateX(-30px);
}

[data-animate="fade-right"] {
  transform: translateX(30px);
}

[data-animate="scale"] {
  transform: scale(0.95);
}

[data-animate="zoom"] {
  transform: scale(0.8);
}

/* Active state when in viewport */
[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0) translateX(0) scale(1);
  transition: 
    opacity var(--dur-slow) var(--ease-expo),
    transform var(--dur-slow) var(--ease-expo);
}

/* Stagger delay utilities */
[data-animate-delay="100"] { transition-delay: 100ms; }
[data-animate-delay="200"] { transition-delay: 200ms; }
[data-animate-delay="300"] { transition-delay: 300ms; }
[data-animate-delay="400"] { transition-delay: 400ms; }
[data-animate-delay="500"] { transition-delay: 500ms; }
[data-animate-delay="600"] { transition-delay: 600ms; }
[data-animate-delay="700"] { transition-delay: 700ms; }
[data-animate-delay="800"] { transition-delay: 800ms; }

/* ═══════════════════════════════════════════════════════════════════════════
   HERO ANIMATIONS
   ═══════════════════════════════════════════════════════════════════════════ */

.hero-title-line {
  overflow: hidden;
  display: block;
}

.hero-title-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: letterReveal 1s var(--ease-expo) forwards;
}

.hero-title-word:nth-child(1) { animation-delay: 0.1s; }
.hero-title-word:nth-child(2) { animation-delay: 0.2s; }
.hero-title-word:nth-child(3) { animation-delay: 0.3s; }
.hero-title-word:nth-child(4) { animation-delay: 0.4s; }
.hero-title-word:nth-child(5) { animation-delay: 0.5s; }

/* ═══════════════════════════════════════════════════════════════════════════
   BUTTON HOVER EFFECTS
   ═══════════════════════════════════════════════════════════════════════════ */

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transform: translateX(-100%);
}

.btn:hover::before {
  animation: shimmer 0.8s ease forwards;
}

/* ═══════════════════════════════════════════════════════════════════════════
   CURSOR ANIMATIONS
   ═══════════════════════════════════════════════════════════════════════════ */

.cursor {
  transition: 
    transform var(--dur-fast) var(--ease-expo),
    opacity var(--dur-fast) var(--ease-expo);
}

.cursor--active {
  transform: scale(1.5);
}

.cursor--hidden {
  opacity: 0;
  transform: scale(0);
}

/* ═══════════════════════════════════════════════════════════════════════════
   MAGNETIC BUTTON ANIMATION
   ═══════════════════════════════════════════════════════════════════════════ */

.btn-magnetic .btn {
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ═══════════════════════════════════════════════════════════════════════════
   LOADING STATES
   ═══════════════════════════════════════════════════════════════════════════ */

.skeleton {
  position: relative;
  overflow: hidden;
  background: var(--color-light);
}

.skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.5),
    transparent
  );
  animation: shimmer 1.5s infinite;
}

/* ═══════════════════════════════════════════════════════════════════════════
   PAGE TRANSITIONS
   ═══════════════════════════════════════════════════════════════════════════ */

.page-transition {
  position: fixed;
  inset: 0;
  background: var(--color-black);
  z-index: 9999;
  transform: scaleY(0);
  transform-origin: bottom;
}

.page-transition--enter {
  animation: pageEnter 0.8s var(--ease-expo) forwards;
}

.page-transition--exit {
  animation: pageExit 0.8s var(--ease-expo) forwards;
}

@keyframes pageEnter {
  from {
    transform: scaleY(1);
    transform-origin: top;
  }
  to {
    transform: scaleY(0);
    transform-origin: top;
  }
}

@keyframes pageExit {
  from {
    transform: scaleY(0);
    transform-origin: bottom;
  }
  to {
    transform: scaleY(1);
    transform-origin: bottom;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   LIGHTBOX ANIMATIONS
   ═══════════════════════════════════════════════════════════════════════════ */

.lightbox {
  opacity: 0;
  visibility: hidden;
  transition: 
    opacity var(--dur-base) var(--ease-expo),
    visibility var(--dur-base);
}

.lightbox--active {
  opacity: 1;
  visibility: visible;
}

.lightbox__image {
  transform: scale(0.9);
  transition: transform var(--dur-slow) var(--ease-expo);
}

.lightbox--active .lightbox__image {
  transform: scale(1);
}

/* ═══════════════════════════════════════════════════════════════════════════
   PARALLAX LAYERS
   ═══════════════════════════════════════════════════════════════════════════ */

/* VISUAL-TACTIC: Three-Layer Parallax */
.parallax-layer {
  will-change: transform;
}

.parallax-layer--bg {
  /* Moves at 0.3x speed - set by JS */
}

.parallax-layer--mid {
  /* Moves at 0.6x speed - set by JS */
}

.parallax-layer--fg {
  /* Moves at 1x speed - set by JS */
}

/* ═══════════════════════════════════════════════════════════════════════════
   SCROLL INDICATOR
   ═══════════════════════════════════════════════════════════════════════════ */

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.scroll-indicator__mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-primary);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator__wheel {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
  50% {
    transform: translateX(-50%) translateY(12px);
    opacity: 0.3;
  }
}

.scroll-indicator__text {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-muted);
}

/* ═══════════════════════════════════════════════════════════════════════════
   REDUCED MOTION OVERRIDES
   ═══════════════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  [data-animate] {
    opacity: 1;
    transform: none;
  }
  
  .hero-title-word {
    opacity: 1;
    transform: none;
    animation: none;
  }
  
  .parallax-layer {
    transform: none !important;
  }
}