:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --font-primary: 'Noto Serif SC', serif;
    --font-secondary: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-secondary);
    background: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    transform: translateZ(0);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeSpeed;
}
.font-primary,
.nav-link,
.scroll-reveal,
.ink-ripple,
.film-card,
.music-card,
.travel-card,
.blog-card {
    will-change: transform, opacity;
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.font-primary {
    font-family: var(--font-primary);
}

.bg-ink-texture {
    background-image: url('../resources/texture-paper.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    transform: translateZ(0);
    position: relative;
    z-index: 0;
}

#navigation-container {
    position: sticky;
    top: 0;
    z-index: 9999;
}

nav {
    background-color: #ffffff;
    transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
    width: 100%;
}

nav.scrolled {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-link {
    position: relative;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-black);
    transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                left 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: translateX(-50%) translateZ(0);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
    left: 50%;
}

.scroll-reveal {
    opacity: 0;
    transform: translate3d(0, 30px, 0);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

.ink-ripple {
    position: relative;
    overflow: hidden;
}

.ink-ripple::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(0,0,0,0.1) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate3d(-50%, -50%, 0) scale(0);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    opacity: 0;
}

.ink-ripple:hover::before {
    transform: translate3d(-50%, -50%, 0) scale(1);
    width: 300px;
    height: 300px;
    opacity: 1;
}

.social-icon {
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
}

.social-icon:hover {
    transform: translate3d(0, -2px, 0);
}

.genre-tag,
.location-tag {
    background: rgba(0,0,0,0.1) !important;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    display: inline-block;
    margin: 0.125rem;
    transform: translateZ(0);
    color: #000000;
}

.rating-stars {
    display: flex;
    gap: 2px;
    transform: translateZ(0);
}

.star {
    width: 16px;
    height: 16px;
    background: #ddd;
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    transition: background 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
}

.star.filled {
    background: var(--color-black);
}

.star.half {
    background: linear-gradient(90deg, var(--color-black) 50%, #ddd 50%);
}

.film-card,
.music-card,
.travel-card,
.blog-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    contain: layout style paint;
}

.film-card:hover,
.music-card:hover,
.travel-card:hover,
.blog-card:hover {
    transform: translate3d(0, -8px, 0);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.film-card img,
.music-card img,
.travel-card img,
.blog-card img {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateZ(0);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.film-card:hover img,
.music-card:hover img,
.travel-card:hover img,
.blog-card:hover img {
    transform: scale3d(1.05, 1.05, 1);
}

#ripple-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    transform: translateZ(0);
    image-rendering: -webkit-optimize-contrast;
}

.content-overlay {
    position: relative;
    z-index: 10;
}

section {
    position: relative;
    z-index: 10;
}

main {
    position: relative;
    z-index: 10;
}

@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;
    }
    
    .scroll-reveal {
        opacity: 1;
        transform: none;
    }
}

/* Page Transition Styles for SPA */
#main-content {
    opacity: 1;
    transform: translate3d(0, 0, 0);
    transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

main.page-exit {
    opacity: 0;
    transform: translate3d(0, -20px, 0);
}

main.page-enter {
    animation: pageEnter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pageEnter {
    0% {
        opacity: 0;
        transform: translate3d(0, 30px, 0);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.page-transition {
    opacity: 0;
    transform: translate3d(0, 20px, 0);
    transition: opacity 0.25s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-transition.active {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

@media (min-resolution: 120dpi) {
    .nav-link,
    .scroll-reveal,
    .social-icon,
    .film-card,
    .music-card,
    .travel-card,
    .blog-card {
        transition-duration: 0.15s;
    }
}

img,
video {
    content-visibility: auto;
    contain-intrinsic-size: 500px 500px;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy-load.loaded {
    opacity: 1;
}