/* Основные стили для сайта курса */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: #2c3e50;
    color: white;
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header h1 a {
    color: white;
    text-decoration: none;
}

header h1 a:hover {
    color: #3498db;
}

header p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

main {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    min-height: 400px;
}

footer {
    margin-top: 2rem;
    padding: 1.5rem;
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    border-top: 1px solid #eee;
}

/* Стили для контента */
.content {
    max-width: 800px;
    margin: 0 auto;
}

h1, h2, h3, h4 {
    color: #2c3e50;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 2.2rem;
    border-bottom: 3px solid #3498db;
    padding-bottom: 0.5rem;
}

h2 {
    font-size: 1.8rem;
    border-bottom: 2px solid #eee;
    padding-bottom: 0.3rem;
}

p {
    margin-bottom: 1rem;
}

ul, ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

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

a:hover {
    text-decoration: underline;
}

code {
    background-color: #f4f4f4;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

pre {
    background-color: #f4f4f4;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin: 1rem 0;
}

pre code {
    background-color: transparent;
    padding: 0;
}

/* Адаптивность */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    header {
        padding: 1.5rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    main {
        padding: 1.5rem;
    }
}