:root {
    /* Color Palette - Sophisticated Editorial */
    --color-bg: #0d0d0d;
    --color-text: #f5f5f7;
    --color-text-muted: #86868b;
    --color-accent: #bfa181;
    /* Subtle gold/earthy accent */
    --color-glass-bg: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-serif: "Playfair Display", "Cormorant Garamond", serif;
    --font-sans: "Inter", "Outfit", -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Transitions */
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
.serif {
    font-family: var(--font-serif);
    font-weight: 400;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s var(--transition-smooth);
}

a:hover {
    color: var(--color-accent);
}

/* Global Nav */
.global-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    background: transparent;
    transition: background 0.5s var(--transition-smooth), backdrop-filter 0.5s var(--transition-smooth);
}

.global-nav.scrolled {
    background: var(--color-glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-glass-border);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    text-transform: uppercase;
    letter-spacing: 0.15rem;
    font-size: 0.8rem;
    font-weight: 500;
}

.nav-links a {
    color: var(--color-text-muted);
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--color-text);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 var(--spacing-md);
    position: relative;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    opacity: 0.3;
}

.hero h1 {
    font-size: clamp(2rem, 8vw, 5rem);
    margin-bottom: var(--spacing-sm);
    max-width: 900px;
    line-height: 1.1;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 600px;
}

/* Content Blocks */
.content-section {
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.editorial-block {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.editorial-block.reverse {
    flex-direction: column-reverse;
}

@media (min-width: 768px) {
    .editorial-block {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xl);
    }

    .editorial-block.reverse {
        flex-direction: row-reverse;
    }

    .editorial-content {
        flex: 1;
    }

    .editorial-media {
        flex: 1.2;
    }
}

.editorial-media img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    filter: grayscale(1);
    transition: filter 0.8s var(--transition-smooth);
}

.editorial-media img:hover {
    filter: grayscale(0.2);
}

.editorial-content h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.editorial-content p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* Utilities */
.cta-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    font-size: 0.8rem;
    border-bottom: 1px solid var(--color-accent);
    padding-bottom: 4px;
    margin-top: var(--spacing-sm);
}

.whitespace-lead {
    margin-bottom: var(--spacing-xl);
}

/* Animations */
[data-fade-in] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s var(--transition-smooth), transform 1s var(--transition-smooth);
}

[data-fade-in].visible {
    opacity: 1;
    transform: translateY(0);
}

/* Edition Page Layout (BioVarta 2025) */
.edition-layout {
    display: flex;
    flex-direction: column;
}

@media (min-width: 1024px) {
    .edition-layout {
        flex-direction: row;
        gap: var(--spacing-lg);
    }

    .edition-nav {
        flex: 0 0 250px;
        position: sticky;
        top: 120px;
        height: fit-content;
        padding-left: var(--spacing-md);
        border-left: 1px solid var(--color-glass-border);
    }

    .edition-content-wrapper {
        flex: 1;
        padding-right: var(--spacing-xl);
    }
}

.edition-nav ul {
    list-style: none;
    margin-top: var(--spacing-md);
}

.edition-nav li {
    margin-bottom: var(--spacing-sm);
}

.edition-nav a {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-transform: capitalize;
    display: block;
    padding-left: 1rem;
    position: relative;
    transition: color 0.3s ease;
}

.edition-nav a.active {
    color: var(--color-text);
}

.edition-nav a.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    transform: translateY(-50%);
}

.chapter-heading {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.1rem;
    color: var(--color-text-muted);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

/* Timeline/Narrative Style */
.narrative-item {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-glass-border);
}

.narrative-time {
    font-size: 0.8rem;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

/* Room/Gallery Grid */
.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.photo-grid img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    filter: grayscale(1);
    transition: filter 0.5s ease;
}

.photo-grid img:hover {
    filter: grayscale(0);
}