:root {
    --primary-color: #10B981;
    --dark-green: #059669;
    --light-green: #D1FAE5;
    --accent-color: #3B82F6;
    --light-gray: #F8FAFC;
    --dark-gray: #64748B;
    --text-color: #1E293B;
    --white-color: #fff;
    --gradient-primary: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-accent: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: transform 0.2s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: 40px;
    margin-right: 12px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
    background: var(--light-green);
    transform: translateY(-1px);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-links a:hover::after {
    width: 80%;
}

main {
    text-align: center;
}

section {
    padding: 5rem 2rem;
}

#hero {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.9), rgba(5, 150, 105, 0.9)), url('https://images.unsplash.com/photo-1454982523318-4b6396f39d3a?q=80&w=2070') no-repeat center center/cover;
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

#hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

#hero p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    margin-bottom: 2.5rem;
    opacity: 0.95;
    line-height: 1.6;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    background: var(--gradient-accent);
}

#features h2, #gallery h2, #download h2, #company h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 900;
    margin-bottom: 3rem;
    color: var(--text-color);
    text-align: center;
    position: relative;
}

#features h2::after, #gallery h2::after, #download h2::after, #company h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white-color);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-card img {
    margin-bottom: 1.5rem;
    border-radius: 50%;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.feature-card:hover img {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: 700;
}

.feature-card p {
    color: var(--dark-gray);
    line-height: 1.6;
}

#gallery {
    background: linear-gradient(135deg, var(--light-gray) 0%, #E2E8F0 100%);
    position: relative;
}

#gallery::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%2310B981" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.gallery-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.gallery-grid img {
    max-width: 280px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    border: 4px solid var(--white-color);
}

.gallery-grid img:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

#download {
    background: var(--gradient-primary);
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}

#download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="waves" width="100" height="20" patternUnits="userSpaceOnUse"><path d="M0 10 Q25 0 50 10 T100 10" stroke="white" stroke-width="1" fill="none" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23waves)"/></svg>');
}

#download h2 {
    color: var(--white-color);
    position: relative;
    z-index: 2;
}

#download p {
    position: relative;
    z-index: 2;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 2rem;
    position: relative;
    z-index: 2;
}

.download-buttons a {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    padding: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.download-buttons a:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--white-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

#company {
    background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
    padding: 5rem 2rem;
    position: relative;
}

#company::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%2310B981" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
}

.company-info {
    max-width: 100%;
    margin: 0;
    position: relative;
    z-index: 2;
}

.company-details {
    background: var(--white-color);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.company-details:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.company-details h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    font-weight: 700;
}

.company-details p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
    line-height: 1.6;
}

.company-details a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.company-details a:hover {
    color: var(--dark-green);
    text-decoration: underline;
}

.company-description {
    background: var(--white-color);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.company-description:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.company-description p {
    line-height: 1.8;
    color: var(--dark-gray);
    font-size: 1.1rem;
}

.company-map {
    background: var(--white-color);
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    border: none;
    transition: all 0.3s ease;
    text-align: center;
}

.company-map:hover {
    transform: none;
    box-shadow: none;
}

.map-container {
    margin-bottom: 2rem;
    border-radius: 0;
    overflow: hidden;
    box-shadow: none;
}

.map-container iframe {
    display: block;
    width: 100%;
    height: 500px;
    border: none;
    border-radius: 0;
}

.map-info {
    text-align: center;
    padding: 2rem;
    background: var(--white-color);
}

.map-info h4 {
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.map-info p {
    color: var(--dark-gray);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.map-link {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--white-color);
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.map-link:hover {
    background: var(--gradient-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

footer {
    background: linear-gradient(135deg, #1E293B 0%, #334155 100%);
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="footer-dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23footer-dots)"/></svg>');
}

.footer-content {
    position: relative;
    z-index: 2;
}

.company-details-footer {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    padding: 3rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.company-info-footer h3 {
    color: var(--white-color);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.company-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.detail-item .label {
    font-weight: 600;
    color: #94A3B8;
    min-width: 120px;
    flex-shrink: 0;
}

.detail-item .value {
    color: var(--white-color);
    line-height: 1.5;
}

.detail-item .value a {
    color: #60A5FA;
    text-decoration: none;
    transition: color 0.3s ease;
}

.detail-item .value a:hover {
    color: #93C5FD;
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding: 2rem;
}

.footer-links a {
    color: var(--white-color);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
}

.footer-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.footer-links .separator {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 1rem;
    }
    
    nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        padding: 0;
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .gallery-grid {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    
    .gallery-grid img {
        max-width: 100%;
        border-width: 2px;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    
    .company-info {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .company-map {
        padding: 0;
    }
    
    .map-container iframe {
        height: 350px;
    }
    
    .map-info {
        padding: 1.5rem;
    }
    
    .company-details-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-links .separator {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
    }
    
    .company-map {
        padding: 0;
    }
    
    .map-container iframe {
        height: 250px;
    }
    
    .map-info {
        padding: 1rem;
    }
    
    .detail-item {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .detail-item .label {
        min-width: auto;
    }
    
    .privacy-container,
    .terms-container {
        padding: 2rem 1rem;
    }
    
    .privacy-content,
    .terms-content {
        padding: 2rem;
    }
    
    .version-list {
        padding: 2rem;
    }
} 
