:root {
    --primary-color: #8D6E63; /* Warm Wood Tone */
    --primary-dark: #5D4037;
    --accent-color: #D7CCC8;
    --text-color: #333333;
    --text-light: #F5F5F5;
    --bg-color: #FAFAFA;
    --bg-dark: #1a1a1a;
    --bg-darker: #121212;
    --transition-speed: 0.3s;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Noto Sans KR', sans-serif;
    
    --container-width: 1200px;
    --nav-height: 80px;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-speed);
}

ul {
    list-style: none;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 2px;
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

/* Loader */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    z-index: 10000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(141, 110, 99, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Navbar */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    transition: all 0.3s;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-color);
    letter-spacing: -0.5px;
}

.logo-dot {
    color: var(--primary-color);
}

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

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-color);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

.nav-links a:hover::after {
    width: 100%;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 600;
}

.lang-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: #999;
    transition: color 0.3s;
}

.lang-btn.active {
    color: var(--primary-color);
}

.divider {
    color: #ddd;
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('assets/hero_wood_texture.png'); /* Will use generated image */
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.6));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    color: rgba(255,255,255,0.9);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

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

.scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    opacity: 0.7;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid white;
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: white;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { top: 8px; opacity: 1; }
    100% { top: 24px; opacity: 0; }
}

/* Section General */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.subtitle {
    display: block;
    text-transform: uppercase;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 20px;
}

.line {
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0 auto;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    color: #666;
    font-size: 1.05rem;
}

.partners {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.partner-card {
    flex: 1;
    background: #fff;
    padding: 20px;
    border: 1px solid #eee;
    text-align: center;
    border-radius: 8px;
    transition: transform 0.3s;
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.partner-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.img-box {
    width: 100%;
    height: 400px;
    background-color: #eee;
    background-image: url('https://images.unsplash.com/photo-1533090161767-e6ffed986c88?auto=format&fit=crop&w=800&q=80'); /* Fallback / Placeholder from generic source if local not avail */
    background-size: cover;
    background-position: center;
    border-radius: 4px;
}

/* Products Section */
.dark-bg {
    background-color: var(--bg-dark);
    color: white;
}

.dark-bg .section-header h2 {
    color: white;
}

.product-categories {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
}

.cat-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: white;
    padding: 10px 25px;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s;
}

.cat-btn:hover, .cat-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: #252525;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
}

.card-img {
    height: 250px;
    width: 100%;
    background-size: cover;
    background-position: center;
}

.card-info {
    padding: 20px;
}

.card-info h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.card-info p {
    color: #aaa;
    font-size: 0.9rem;
}

/* Technology Section */
.tech-steps {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.step {
    flex: 1;
    position: relative;
    padding: 30px;
    background: white;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-radius: 8px;
    transition: transform 0.3s;
}

.step:hover {
    transform: translateY(-5px);
}

.step-num {
    font-size: 3rem;
    font-weight: 700;
    color: rgba(141, 110, 99, 0.1);
    position: absolute;
    top: 10px;
    right: 20px;
}

.step h3 {
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.footer-section {
    background-color: var(--bg-darker);
    color: white;
    padding-bottom: 30px;
}

.contact-wrapper {
    display: flex;
    gap: 50px;
    margin-bottom: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info h2 {
    margin-bottom: 20px;
}

.contact-details {
    margin-top: 30px;
}

.contact-details li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-details i {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--primary-color);
}

.contact-form-wrapper {
    flex: 1;
    background: #1f1f1f;
    padding: 40px;
    border-radius: 8px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 15px;
    background: #333;
    border: none;
    color: white;
    border-radius: 4px;
    font-family: inherit;
}

.form-group input:focus, .form-group textarea:focus {
    outline: 2px solid var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: #777;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

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

    .about-grid, .tech-steps, .contact-wrapper {
        grid-template-columns: 1fr;
        flex-direction: column;
    }
    
    .contact-form-wrapper {
        padding: 20px;
    }
}