body, html {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(to bottom, #001f3f, #0074d9);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    padding: 15px 20px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 2px;
}

main {
    margin-top: 80px;
    padding: 20px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out;
}

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

article h2, article h3, article h4 {
    color: #ff4136;
    margin-top: 20px;
}

article p {
    font-size: 16px;
    margin-bottom: 15px;
}

code {
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    color: #00ff00;
    display: block;
    margin: 10px 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

button {
    background: #0074d9;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease-in-out;
}

button:hover {
    transform: scale(1.1);
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1%, transparent 50%);
    animation: move 5s infinite linear;
}

@keyframes move {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}

@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    article h2 {
        font-size: 24px;
    }

    article p {
        font-size: 14px;
    }
}