/* Методическая копилка */
.subsections {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.subsection {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 5px;
    transition: transform 0.3s, box-shadow 0.3s;
    border-left: 4px solid #3498db;
}

.subsection:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.subsection h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.subsection ul {
    margin-left: 1.5rem;
}

.subsection li {
    margin-bottom: 0.5rem;
}

.subsection a {
    color: #3498db;
    text-decoration: none;
}

.subsection a:hover {
    text-decoration: underline;
}

.video-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.video-link {
    display: block;
    padding: 0.8rem;
    background-color: #e8f4fc;
    border-radius: 5px;
    text-decoration: none;
    color: #2c3e50;
    transition: background-color 0.3s;
}

.video-link:hover {
    background-color: #d4e9f7;
}

/* Адаптивность для методической копилки */
@media (max-width: 768px) {
    .subsections {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 1rem;
    }
    
    .subsection {
        padding: 1.2rem;
    }
    
    .subsection h3 {
        font-size: 1.2rem;
    }
    
    .subsection ul {
        margin-left: 1rem;
    }
    
    .video-link {
        padding: 0.7rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .subsection {
        padding: 1rem;
    }
    
    .subsection h3 {
        font-size: 1.1rem;
    }
    
    .subsection ul {
        margin-left: 0.8rem;
    }
    
    .subsection li {
        margin-bottom: 0.4rem;
        font-size: 0.95rem;
    }
    
    .video-link {
        padding: 0.6rem;
        font-size: 0.9rem;
    }
}