/* Learn Korean with K-EDU Plugin Styles */

.learn-korean-wrapper {
    max-width: 100%;
    margin: 20px auto;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.learn-korean-header {
    text-align: center;
    margin-bottom: 20px;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 8px;
}

.learn-korean-header h2 {
    margin: 0 0 10px 0;
    font-size: 2em;
    font-weight: bold;
}

.learn-korean-header p {
    margin: 0;
    font-size: 1.1em;
    opacity: 0.9;
}

.learn-korean-app-frame {
    width: 100%;
    margin: 20px 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.learn-korean-app-frame iframe {
    display: block;
    width: 100%;
    min-height: 600px;
    border: none;
    background: white;
}

.learn-korean-loading {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: 8px;
    margin: 20px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 20px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.learn-korean-fallback {
    background: white;
    padding: 30px;
    border-radius: 8px;
    margin: 20px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.feature-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border: 2px solid #e9ecef;
    transition: transform 0.3s ease;
}

.feature-card:hover,
.feature-card.hovered {
    transform: translateY(-5px);
    border-color: #667eea;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.feature-card h3 {
    margin: 0 0 15px 0;
    color: #495057;
    font-size: 1.3em;
}

.feature-card p {
    margin: 0;
    color: #6c757d;
    line-height: 1.5;
}

.cta-section {
    text-align: center;
    padding: 20px;
    background: #e7f3ff;
    border-radius: 8px;
    border-left: 4px solid #0066cc;
}

.cta-section p {
    margin: 10px 0;
}

.cta-section a {
    color: #0066cc;
    text-decoration: none;
    font-weight: bold;
}

.cta-section a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .learn-korean-wrapper {
        margin: 10px;
        padding: 15px;
    }
    
    .learn-korean-header h2 {
        font-size: 1.5em;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .learn-korean-app-frame iframe {
        min-height: 500px;
    }
}

@media (max-width: 480px) {
    .learn-korean-header {
        padding: 15px;
    }
    
    .learn-korean-header h2 {
        font-size: 1.3em;
    }
    
    .learn-korean-header p {
        font-size: 1em;
    }
    
    .learn-korean-app-frame iframe {
        min-height: 400px;
    }
}