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

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

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(76, 175, 80, 0.2);
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
    color: #4CAF50;
}

.logo i {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: 2rem;
}

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

.nav-link:hover {
    color: #4CAF50;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #4CAF50;
    transition: width 0.3s ease;
}

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

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(76, 175, 80, 0.8) 0%,
        rgba(139, 195, 74, 0.6) 50%,
        rgba(205, 220, 57, 0.4) 100%
    );
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.highlight {
    color: #CDDC39;
    display: inline-block;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 20px rgba(205, 220, 57, 0.6);
    }
    to {
        text-shadow: 0 0 30px rgba(205, 220, 57, 0.9), 0 0 40px rgba(205, 220, 57, 0.6);
    }
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.hero-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.8rem 1.2rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.info-item i {
    color: #CDDC39;
    font-size: 1.1rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    color: white;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.3);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(76, 175, 80, 0.4);
    background: linear-gradient(45deg, #45a049, #7cb342);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2E7D32;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f5e8 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.about-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-top: 4px solid #4CAF50;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.about-card h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 1rem;
}

.about-card p {
    color: #666;
    line-height: 1.7;
}

/* Schedule Section */
.schedule {
    padding: 6rem 0;
    background: white;
}

.schedule-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
}

.day-schedule {
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f5e8 100%);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.day-title {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.6rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #4CAF50;
}

.day-title i {
    color: #4CAF50;
    font-size: 1.4rem;
}

.schedule-timeline {
    position: relative;
}

.timeline-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 75px;
    top: 30px;
    bottom: -20px;
    width: 2px;
    background: linear-gradient(to bottom, #4CAF50, #8BC34A);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-time {
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    min-width: 70px;
    text-align: center;
    height: fit-content;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}

.timeline-content {
    flex: 1;
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #4CAF50;
}

.timeline-content h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 0.5rem;
}

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

/* Registration Section */
.registration {
    padding: 6rem 0;
    background: linear-gradient(135deg, #e8f5e8 0%, #c8e6c9 100%);
}

.registration-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.registration-info {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.registration-info h3 {
    font-size: 1.6rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.registration-info h3::before {
    content: '📋';
    font-size: 1.4rem;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-list .info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #4CAF50;
}

.info-list .info-item i {
    color: #4CAF50;
    font-size: 1.1rem;
    margin-top: 0.2rem;
}

.registration-form {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.form-group label i {
    color: #4CAF50;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"] {
    width: 100%;
    padding: 1rem 1.2rem;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fafafa;
}

.form-group input:focus {
    outline: none;
    border-color: #4CAF50;
    background: white;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.participation-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.participation-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.option-card {
    position: relative;
}

.option-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.option-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fafafa;
}

.option-card input:checked + .option-label {
    border-color: #4CAF50;
    background: rgba(76, 175, 80, 0.05);
}

.option-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.option-text h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 0.3rem;
}

.option-text p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
}

.submit-button {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.3);
}

.submit-button:hover {
    background: linear-gradient(45deg, #45a049, #7cb342);
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(76, 175, 80, 0.4);
}

/* Success Message */
.success-message {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.success-message.hidden {
    display: none;
}

.success-content {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.success-content i {
    font-size: 4rem;
    color: #4CAF50;
    margin-bottom: 1rem;
}

.success-content h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 1rem;
}

.success-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.close-button {
    background: linear-gradient(45deg, #4CAF50, #8BC34A);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-button:hover {
    background: linear-gradient(45deg, #45a049, #7cb342);
    transform: translateY(-2px);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #2E7D32 0%, #388E3C 100%);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 1.5rem;
    color: #CDDC39;
}

.footer-info p {
    opacity: 0.9;
    line-height: 1.6;
}

.footer-contact h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #CDDC39;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.footer-contact i {
    color: #CDDC39;
    width: 16px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
    opacity: 0.8;
}

.admin-link {
    color: #CDDC39;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.admin-link:hover {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-info {
        gap: 1rem;
    }
    
    .info-item {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .nav {
        display: none;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .schedule-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .day-schedule {
        padding: 2rem;
    }
    
    .registration-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .participation-options {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-info {
        flex-direction: column;
        align-items: center;
    }
    
    .registration-form {
        padding: 2rem;
    }
    
    .success-content {
        margin: 1rem;
        padding: 2rem;
    }
}