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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo-image {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #333;
    cursor: pointer;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #667eea;
}

.eng-link {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.eng-link:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    color: white !important;
}

/* Hero Section */
.hero {
    height: 100vh;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.3)), 
                      url('/assets/images/hero_002.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: white;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.3) 0%, rgba(118, 75, 162, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    line-height: 1.6;
    opacity: 0.9;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    margin-top: 20px;
}

.cta-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 18px 36px;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    font-family: inherit;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

.cta-button:active {
    transform: translateY(0);
}

/* Section Common Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Services Section */
.services {
    padding: 100px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.service-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.service-description {
    color: #666;
    line-height: 1.7;
}

/* Events Preview Section */
.events-preview {
    padding: 100px 0;
    background: #f8fafc;
}

.events-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.event-preview-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.event-preview-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.event-preview-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.event-preview-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.event-preview-tags {
    position: absolute;
    top: 15px;
    left: 15px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.event-preview-content {
    padding: 25px;
}

.event-preview-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.event-preview-title a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.event-preview-title a:hover {
    color: #667eea;
}

.event-preview-summary {
    color: #666;
    line-height: 1.6;
    margin-bottom: 18px;
    font-size: 0.95rem;
}

.event-preview-meta {
    display: flex;
    gap: 20px;
    color: #888;
    font-size: 0.9rem;
}

.event-preview-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.event-preview-meta i {
    color: #667eea;
}

.events-cta {
    text-align: center;
}

/* Targets Section */
.targets {
    padding: 100px 0;
}

.targets-list {
    display: grid;
    gap: 30px;
}

.target-item {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    padding: 30px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    border-radius: 15px;
    border-left: 4px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.target-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.target-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.target-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.target-content p {
    color: #666;
    line-height: 1.6;
}

/* Opportunities Section */
.opportunities {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.opportunities .section-title {
    color: white;
    -webkit-text-fill-color: white;
}

.opportunity-highlight {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.opportunity-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.opportunity-text h3 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.opportunity-text p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 25px;
    opacity: 0.9;
}

.opportunity-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.feature-item i {
    color: #4ade80;
}

/* Startups Section */
.startups {
    padding: 100px 0;
    background: #f8fafc;
}

.startups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.startup-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.startup-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

.startup-logo {
    margin-bottom: 20px;
}

.logo-placeholder {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.startup-name {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #333;
}

.startup-category {
    color: #667eea;
    font-weight: 500;
    margin-bottom: 15px;
}

.startup-description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.startup-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
	background: rgba(255, 255, 255, 0.8);
    color: #667eea;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.coming-soon {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 250px;
    border: 2px dashed #ddd;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.02) 0%, rgba(118, 75, 162, 0.02) 100%);
}

.coming-soon-content i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 15px;
}

.coming-soon-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #333;
}

.coming-soon-content p {
    color: #666;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-main {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-logo-image {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.footer-logo .logo-text {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-text h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}

.footer-site {
    font-size: 1.1rem;
    color: #667eea;
    font-weight: 500;
}

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

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #667eea;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #667eea;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #999;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero {
        background-attachment: scroll;
        background-size: cover;
        min-height: 100vh;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .cta-button {
        padding: 16px 32px;
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .target-item {
        flex-direction: column;
        text-align: center;
    }
    
    .opportunity-highlight {
        flex-direction: column;
        text-align: center;
    }
    
    .opportunity-features {
        justify-content: center;
    }
    
    .startups-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
    
    .nav-links {
        display: flex;
        flex-direction: column;
        gap: 15px;
        position: absolute;
        top: 70px;
        right: 20px;
        background: rgba(255, 255, 255, 0.98);
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-links.mobile-active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: #333;
        cursor: pointer;
    }
    
    .nav-links a {
        color: #333;
        text-align: center;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero {
        background-attachment: scroll;
        background-size: cover;
        background-position: center center;
        min-height: 100vh;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 14px 28px;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .service-card,
    .target-item,
    .startup-card {
        padding: 20px;
    }
    
    .opportunity-highlight {
        padding: 25px;
    }
}

/* Smooth animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card,
.target-item,
.startup-card {
    animation: fadeInUp 0.6s ease forwards;
}