:root {
    /* Color Palette */
    --primary: #8B4513;
    /* SaddleBrown: Deep, traditional earth tone */
    --primary-dark: #5D2E0C;
    --primary-light: #A05A2C;
    --secondary: #1a1a1a;
    /* Rich Black */
    --accent: #C9A227;
    /* Gold: Premium accent */
    --background: #F9F7F5;
    /* Warm, paper-like off-white */
    --surface: #FFFFFF;
    --text: #2D2D2D;
    --text-light: #666666;
    --text-lighter: #999999;
    --border: #E0D4C3;

    /* Functional Colors */
    --success: #2E7D32;
    --warning: #ED6C02;
    --error: #D32F2F;

    /* Spacing & Layout */
    --container-width: 1200px;
    --header-height: 80px;
    --border-radius: 8px;

    /* Fonts */
    --font-main: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    --font-serif: 'Nanum Myeongjo', serif;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--background);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    color: var(--secondary);
    line-height: 1.3;
}

.text-serif {
    font-family: var(--font-serif);
}

.text-accent {
    color: var(--accent);
}

.text-primary {
    color: var(--primary);
}

/* Layout */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

/* Header */
header {
    height: var(--header-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

header.scrolled {
    height: 70px;
    box-shadow: var(--shadow-md);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    font-family: var(--font-serif);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-menu {
    display: flex;
    gap: 40px;
}

.nav-menu a {
    font-weight: 500;
    font-size: 16px;
    color: var(--secondary);
    position: relative;
    padding: 5px 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--secondary);
    padding: 8px;
    z-index: 1001;
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 998;
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

.btn-cta {
    background-color: var(--primary);
    color: var(--surface);
    padding: 12px 28px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid var(--primary);
}

.btn-cta:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(139, 69, 19, 0.2);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 12px 28px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--surface);
}

/* Hero Section */
.hero {
    height: 90vh;
    min-height: 600px;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.3)), url('/assets/img/hero_main.jpg') no-repeat center/cover;
    background-attachment: fixed;
    /* Parallax effect */
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--surface);
    position: relative;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 24px;
    color: var(--surface);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    font-weight: 700;
}

.hero-content p {
    font-size: 1.4rem;
    margin-bottom: 48px;
    font-weight: 300;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
}

/* Product Card */
.product-card {
    background: var(--surface);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: #f4f4f4;
    position: relative;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 24px;
    text-align: center;
}

.product-category {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
    margin-bottom: 8px;
    display: block;
}

.product-title {
    font-size: 1.4rem;
    margin-bottom: 8px;
    color: var(--secondary);
}

.product-specs {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.product-price {
    font-family: var(--font-main);
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
}

/* Footer */
footer {
    background-color: #111;
    color: #999;
    padding: 80px 0 40px;
    border-top: 4px solid var(--primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand h2 {
    color: var(--surface);
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.footer h4 {
    color: var(--surface);
    margin-bottom: 24px;
    font-size: 1.1rem;
    font-family: var(--font-main);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 40px;
    text-align: center;
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Media Queries */
@media (max-width: 1024px) {
    :root {
        --header-height: 70px;
    }

    .nav-menu {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .container {
        padding: 0 20px;
    }

    .desktop-only {
        display: none;
    }

    .mobile-toggle {
        display: block;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    /* Mobile Side Menu */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background: var(--surface);
        flex-direction: column;
        padding: 100px 40px;
        gap: 25px;
        transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        z-index: 999;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu a {
        font-size: 1.2rem;
        display: block;
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero {
        background-attachment: scroll;
        /* Disable parallax on small screens for performance */
    }
}