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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

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


header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(to right, #2c3e50, #4a6491);
    color: white;
    border-radius: 0 0 15px 15px;
    margin-bottom: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}


nav {
    background-color: white;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0;
}

nav ul li a {
    display: block;
    padding: 15px 25px;
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

nav ul li a:hover {
    background-color: #f8f9fa;
    border-bottom: 3px solid #3498db;
    color: #3498db;
}


main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.content-section {
    background-color: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.content-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.content-section h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}


.commands {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.command-card {
    background-color: #f8f9fa;
    border-left: 4px solid #3498db;
    padding: 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.command-card:hover {
    background-color: #e9f7fe;
    transform: translateX(5px);
}

.command-card h3 {
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.process-list {
    padding-left: 20px;
    margin-top: 15px;
}

.process-list li {
    margin-bottom: 10px;
    padding-left: 10px;
}


footer {
    background-color: #2c3e50;
    color: white;
    border-radius: 15px 15px 0 0;
    overflow: hidden;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 40px 30px;
}

.footer-section h3 {
    margin-bottom: 15px;
    color: #3498db;
}

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

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

.footer-bottom {
    text-align: center;
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.2);
    font-size: 0.9rem;
    color: #bdc3c7;
}


i {
    margin-right: 8px;
}


@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    nav ul {
        flex-direction: column;
    }
    
    nav ul li a {
        text-align: center;
    }
    
    .commands {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}