:root {
    --primary-color: #1a1a1a;
    --secondary-color: #f4f4f4;
    --accent-color: #a68b6a; /* Earthy gold */
    --text-color: #333;
    --text-muted: #666;
    --bg-color: #fff;
    --section-bg: #fafafa;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Outfit', sans-serif;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.8;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

p {
    margin-bottom: 1.5rem;
    font-weight: 300;
}

/* Navigation */
#main-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: var(--transition);
    background: transparent;
}

#main-nav.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 1rem 5%;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.logo {
    font-weight: 600;
    letter-spacing: 3px;
    font-size: 1.2rem;
}

#main-nav ul {
    display: flex;
    list-style: none;
}

#main-nav ul li {
    margin-left: 2rem;
}

#main-nav ul li a {
    text-decoration: none;
    color: inherit;
    font-weight: 400;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

#main-nav ul li a:hover {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: #fff;
    text-align: center;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.6);
    transform: scale(1.05);
    transition: transform 10s ease-out;
}

.hero:hover .hero-bg {
    transform: scale(1);
}

.hero-content h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: 1rem;
}

.hero-content h1 span {
    font-weight: 300;
    font-style: italic;
}

.hero-content p {
    font-size: clamp(1rem, 2vw, 1.5rem);
    letter-spacing: 2px;
    opacity: 0.8;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 80px;
    background: linear-gradient(to bottom, transparent, #fff);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0) translateX(-50%); transform-origin: top; }
    50% { transform: scaleY(1) translateX(-50%); transform-origin: top; }
    51% { transform: scaleY(1) translateX(-50%); transform-origin: bottom; }
    100% { transform: scaleY(0) translateX(-50%); transform-origin: bottom; }
}

/* Sections */
.container {
    padding: 0 5%;
}

.section {
    padding: 10rem 0;
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s ease-out;
}

.section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-header {
    margin-bottom: 4rem;
}

.step-num {
    display: block;
    font-size: 1rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
    font-weight: 600;
}

.section h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    max-width: 800px;
}

.content-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.content-grid.narrow {
    grid-template-columns: 1fr;
    max-width: 900px;
    margin: 0 auto;
}

.text-block p {
    font-size: 1.1rem;
    color: var(--text-color);
}

.side-info {
    padding: 3rem;
    background: var(--section-bg);
    border-left: 3px solid var(--accent-color);
}

blockquote {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-style: italic;
    color: var(--primary-color);
}

.image-block img {
    width: 100%;
    height: auto;
    border-radius: 5px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.full-width {
    width: 100%;
    margin: 2rem 0;
}

/* Section Variants */
.inverse .content-grid {
    grid-template-columns: 1fr 1.5fr;
}

.glass {
    background: var(--section-bg);
    padding: 8rem 5%;
    margin: 0 -5%;
    position: relative;
}

.highlight {
    background: #fff;
    padding: 3rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.dark {
    background: var(--primary-color);
    color: #fff;
    margin: 0 -5%;
    padding: 10rem 10%;
}

.dark .section h2 {
    color: #fff;
}

.dark p {
    color: #ccc;
}

/* Conclusion */
.conclusion {
    padding: 10rem 0;
    text-align: center;
}

.conclusion-content {
    max-width: 800px;
    margin: 0 auto;
}

.conclusion h2 {
    font-size: 3rem;
    margin-bottom: 2rem;
}

/* Footer */
footer {
    padding: 5rem 5%;
    border-top: 1px solid #eee;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-weight: 600;
    letter-spacing: 3px;
}

/* Animations */
.fade-in {
    animation: fadeIn 1.5s ease-out forwards;
}

.fade-in-delay {
    opacity: 0;
    animation: fadeIn 1.5s ease-out 0.5s forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 968px) {
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .inverse .content-grid {
        grid-template-columns: 1fr;
    }
    
    #main-nav ul {
        display: none; /* Hide nav for simplicity on mobile in this demo */
    }
}