* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 3.5rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

header p {
    font-size: 1.8rem;
    color: #7f8c8d;
}

.dashboard-section, .info-section {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

h2 {
    font-size: 2.8rem;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

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

.training-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 3px solid transparent;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
}

.training-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    border-color: #3498db;
}

.training-card.coming-soon {
    opacity: 0.7;
    cursor: not-allowed;
}

.training-card.coming-soon:hover {
    transform: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: transparent;
}

.card-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: block;
}

.training-card h3 {
    font-size: 2.2rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.training-card p {
    font-size: 1.4rem;
    color: #7f8c8d;
    margin-bottom: 20px;
}

.training-card ul {
    text-align: left;
    margin: 20px 0;
    padding-left: 20px;
}

.training-card li {
    font-size: 1.2rem;
    color: #34495e;
    margin-bottom: 8px;
    list-style-type: none;
    position: relative;
    padding-left: 20px;
}

.training-card li:before {
    content: "✓";
    color: #27ae60;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.difficulty {
    font-size: 1.3rem;
    color: #e67e22;
    font-weight: bold;
    margin-top: 20px;
}

.coming-soon-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: #e74c3c;
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 1rem;
    font-weight: bold;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.info-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.info-card h3 {
    font-size: 1.8rem;
    color: #2c3e50;
    margin-bottom: 15px;
}

.info-card ul, .info-card ol {
    padding-left: 20px;
}

.info-card li {
    font-size: 1.2rem;
    color: #34495e;
    margin-bottom: 10px;
    line-height: 1.5;
}



/* 반응형 디자인 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header {
        padding: 20px;
    }
    
    header h1 {
        font-size: 2.5rem;
    }
    
    header p {
        font-size: 1.4rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    .training-grid {
        grid-template-columns: 1fr;
    }
    
    .training-card {
        padding: 20px;
    }
    
    .card-icon {
        font-size: 3rem;
    }
    
    .training-card h3 {
        font-size: 1.8rem;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}

/* 접근성 개선 */
.training-card:focus {
    outline: 3px solid #f39c12;
    outline-offset: 2px;
}

button:focus {
    outline: 3px solid #f39c12;
    outline-offset: 2px;
}

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

.training-card {
    animation: fadeInUp 0.6s ease-out;
}

.training-card:nth-child(2) {
    animation-delay: 0.1s;
}

.training-card:nth-child(3) {
    animation-delay: 0.2s;
}

.training-card:nth-child(4) {
    animation-delay: 0.3s;
}

/* 호버 효과 개선 */
.training-card:not(.coming-soon):hover .card-icon {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

/* 로딩 상태 */
.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* 성공 상태 */
.success {
    border-color: #27ae60;
    background: linear-gradient(135deg, #f8fff9, #e8f5e8);
}

/* Footer 스타일 */
.footer {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: #f5f5dc;
    padding: 20px 0;
    margin-top: 50px;
    border-top: 1px solid #34495e;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.developer-info h3 {
    font-size: 1rem;
    margin-bottom: 3px;
    color: #f5f5dc;
}

.developer-info p {
    font-size: 0.9rem;
    color: #f5f5dc;
}

.social-links {
    display: flex;
    gap: 15px;
}

.instagram-link {
    display: flex;
    align-items: center;
    gap: 5px;
    color: #f5f5dc;
    text-decoration: none;
    padding: 5px 10px;
    border-radius: 5px;
    background: transparent;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.instagram-link:hover {
    background: rgba(255, 255, 255, 0.1);
}



/* 반응형 Footer */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .developer-info h3 {
        font-size: 0.9rem;
    }
    
    .instagram-link {
        font-size: 0.8rem;
        padding: 4px 8px;
    }
}