/* ============================================
   Eternal Paws - Performance Animations v9
   Lightweight, GPU-accelerated, smooth
   ============================================ */

/* === Loading Screen === */
.page-loader {
    position: fixed;
    inset: 0;
    background: #FDF8F4;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}
.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}
.loader-heart {
    width: 48px;
    height: 48px;
    animation: heartbeat 1.2s ease-in-out infinite;
}
.loader-heart svg { fill: #D4A574; }
@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.15); }
    50% { transform: scale(1); }
    75% { transform: scale(1.08); }
}

/* === Hero Ken Burns Background (pure CSS, no JS) === */
.hero-bg-image {
    animation: kenBurns 25s ease-in-out infinite alternate;
    will-change: transform;
}
@keyframes kenBurns {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.08) translate(-1%, -1%); }
}

/* === Hero Text Entry Animations === */
.hero-badge {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-badge.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.hero-title {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s, transform 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s;
}
.hero-title.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Letter-by-letter for hero title */
.hero-title .letter {
    display: inline-block;
    opacity: 0;
    transform: translateY(60px) rotateX(-40deg);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-title .letter.animate-in {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
}
.hero-title .letter-space {
    display: inline-block;
    width: 0.3em;
}

.hero-subtitle {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-subtitle.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.hero-description {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-description.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.hero-buttons {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-buttons.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* === Scroll Reveal (lightweight, one observer) === */
.section-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.section-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.08s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.16s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.24s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.32s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.40s; }
.stagger-children.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* === Scroll Progress Bar (lightweight) === */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, #D4A574, #E8C9A8);
    z-index: 9999;
    will-change: width;
}

/* === Gradient Text Animation === */
.gradient-text {
    background: linear-gradient(135deg, #D4A574 0%, #E8C9A8 40%, #C19A6B 60%, #D4A574 100%);
    background-size: 300% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 6s ease infinite;
}
@keyframes gradientFlow {
    0% { background-position: 0% center; }
    50% { background-position: 100% center; }
    100% { background-position: 0% center; }
}

/* === Floating Hearts (CSS only, no JS) === */
.floating-heart {
    position: absolute;
    font-size: 1.2rem;
    opacity: 0;
    animation: floatHeart 10s ease-in-out infinite;
    will-change: transform, opacity;
}
@keyframes floatHeart {
    0% { transform: translateY(0) scale(0); opacity: 0; }
    15% { opacity: 0.5; transform: translateY(-15vh) scale(1); }
    85% { opacity: 0.2; }
    100% { transform: translateY(-80vh) scale(0.5); opacity: 0; }
}

/* === Product Card Hover (GPU-accelerated) === */
.memorial-card, .product-card {
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
}
.memorial-card:hover, .product-card:hover {
    transform: translateY(-6px);
}
.memorial-card img, .product-card img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.memorial-card:hover img, .product-card:hover img {
    transform: scale(1.05);
}

/* === Counter Animation === */
.counter-animate {
    font-variant-numeric: tabular-nums;
}

/* === Smooth Scroll === */
html {
    scroll-behavior: smooth;
}

/* === Navbar Glass Effect on Scroll === */
.navbar.scrolled {
    background: rgba(255, 251, 245, 0.92) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

/* === Image Reveal (on scroll) === */
.image-reveal {
    position: relative;
    overflow: hidden;
}
.image-reveal::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #D4A574, #E8C9A8);
    transform: scaleX(1);
    transform-origin: right;
    transition: transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.image-reveal.revealed::after {
    transform: scaleX(0);
    transform-origin: left;
}

/* === Performance: GPU hints === */
.hero, .hero-bg-image, .hero-content {
    contain: layout style;
}

/* === Mobile: reduce complexity === */
@media (max-width: 768px) {
    .hero-bg-image {
        animation-duration: 30s; /* slower on mobile */
    }
    .floating-heart { display: none; }
}

/* === Respect user preference === */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .hero-bg-image { animation: none; transform: scale(1.02); }
    .section-reveal, .stagger-children > * { opacity: 1; transform: none; }
    .hero-badge, .hero-title, .hero-subtitle, .hero-description, .hero-buttons {
        opacity: 1; transform: none;
    }
}