:root {
    --primary-color: #004085;
    --accent-color-1: #007bff;
    --accent-color-2: #6f42c1;
    --background-gradient: linear-gradient(to bottom, #ffffff, #004085);
    --font-primary: 'Roboto', sans-serif;
    --font-title: 'Orbitron', sans-serif;
}

body {
    margin: 0;
    font-family: var(--font-primary);
    background: var(--background-gradient);
    color: #333;
    line-height: 1.6;
    padding: 20px;
    overflow-x: hidden;
}

header {
    text-align: center;
    padding: 40px 20px;
    background: rgba(0, 64, 133, 0.9);
    color: #fff;
    position: relative;
}

header h1 {
    font-family: var(--font-title);
    font-size: 3rem;
    margin: 0;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
}

header p {
    font-size: 1.2rem;
    margin-top: 10px;
}

.container {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.module {
    grid-column: span 12;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

@media (min-width: 768px) {
    .module {
        grid-column: span 6;
    }
}

@media (min-width: 1024px) {
    .module {
        grid-column: span 4;
    }
}

h2, h3 {
    font-family: var(--font-title);
    color: var(--accent-color-1);
}

h2 {
    font-size: 2rem;
    margin-top: 30px;
}

h3 {
    font-size: 1.5rem;
    margin-top: 20px;
}

p {
    font-size: 1rem;
    color: #333;
    margin-bottom: 15px;
}

pre {
    background: #282c34;
    color: #fff;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

button {
    background: var(--accent-color-1);
    color: #fff;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background: #0056b3;
    transform: scale(1.1);
}

.grid-background {
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(0, 0, 0, 0.1) 10px,
        rgba(0, 0, 0, 0.1) 20px
    );
}

.hidden {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.show {
    opacity: 1;
    transform: translateY(0);
}

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

footer {
    text-align: center;
    padding: 20px;
    background: var(--primary-color);
    color: #fff;
    margin-top: 40px;
}