/* styles.css */
/* Оптимизация шрифтов */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;500;700&display=swap');

/* Предзагрузка важных ресурсов */
link[rel="preload"] {
    font-display: swap;
}

:root {
    --primary-color: #2A5C8B;
    --secondary-color: #3A3A3A;
    --background-color: #F9F9F9;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--secondary-color);
    background-color: var(--background-color);
}

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

.header {
    padding: 2rem 0;
    border-bottom: 1px solid #eee;
}

.logo {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.8rem;
}

.hero {
    text-align: center;
    padding: 6rem 0;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
}

.course-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-5px);
}

.course-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer {
    border-top: 1px solid #eee;
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
}

@media (max-width: 768px) {
    .hero {
        padding: 4rem 0;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
}