:root {
    --primary-color: #1E293B;
    --secondary-color: #3B82F6;
    --accent-color: #EF4444;
    --background-gradient: linear-gradient(135deg, #f3f4f6, #e5e7eb);
    --text-color: #374151;
    --code-bg: #1F2937;
    --code-text: #d1d5db;
}

body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-gradient);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    min-height: 100vh;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    background: linear-gradient(90deg, #3B82F6, #6366F1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

main {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

section {
    margin-bottom: 60px;
    padding: 20px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-color);
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

p {
    font-size: 1rem;
    margin-bottom: 15px;
}

pre {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

code {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 2px 5px;
    border-radius: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

th {
    background: var(--secondary-color);
    color: white;
}

.card {
    background: #f9f9f9;
    border: 1px solid #ddd;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out;
}

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

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 10px 0;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    pre {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.1rem;
    }

    p, table th, table td {
        font-size: 0.9rem;
    }
}