/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header and Navigation */
header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    font-size: 1.5rem;
    color: #2c3e50;
}

.logo p {
    font-size: 0.9rem;
    color: #7f8c8d;
}

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    margin: 0 1rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

.language-switcher button {
    background: none;
    border: 1px solid #3498db;
    color: #3498db;
    padding: 0.3rem 0.8rem;
    margin: 0 0.2rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.language-switcher button:hover {
    background: #3498db;
    color: white;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.5rem;
    opacity: 0.9;
}

/* Services Section */
.services {
    padding: 5rem 5%;
    background-color: #f9f9f9;
}

.services h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.service-card i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1rem;
}

/* Portfolio Section */
.portfolio {
    padding: 5rem 5%;
}

.portfolio h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Contact Section */
.contact {
    padding: 5rem 5%;
    background-color: #f9f9f9;
    text-align: center;
}

.contact h2 {
    margin-bottom: 3rem;
    color: #2c3e50;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info p {
    margin: 1rem 0;
    font-size: 1.1rem;
}

.contact-info i {
    color: #3498db;
    margin-right: 0.5rem;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 1.5rem;
}

/* Language Switching */
[data-lang] {
    display: none;
}

[data-lang="ko"] {
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        padding: 1rem;
    }

    .nav-links {
        margin: 1rem 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.2rem;
    }

    .service-grid {
        grid-template-columns: 1fr;
    }
}