body, html {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #0d1b2a, #162447);
    color: #ffffff;
    overflow-x: hidden;
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    color: #ff9800;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

header p {
    font-size: 1.2rem;
    color: #e0e0e0;
    margin-top: 0.5rem;
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.card {
    background: linear-gradient(135deg, #1e293b, #2d3748);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    position: relative;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.card img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
    text-align: center;
}

.card-content h3 {
    font-size: 1.5rem;
    margin: 0 0 0.5rem;
    color: #ff9800;
}

.card-content p {
    font-size: 1rem;
    color: #d1d5db;
    line-height: 1.6;
}

.button {
    display: inline-block;
    background: linear-gradient(to bottom, #ff9800, #e65100);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease-in-out, background 0.2s ease-in-out;
}

.button:hover {
    transform: scale(1.05);
    background: linear-gradient(to bottom, #e65100, #ff9800);
}

.article-container {
    background: rgba(0, 0, 0, 0.6);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.article-container h2 {
    color: #ff9800;
    text-align: center;
    margin-bottom: 1rem;
}

.article-container h3 {
    color: #ffcc80;
    margin-top: 1.5rem;
}

.article-container pre {
    background: #2d3748;
    color: #d1d5db;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9rem;
}

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

    .container {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .card {
        margin-bottom: 1rem;
    }
}

@media (min-width: 1200px) {
    .container {
        grid-template-columns: repeat(3, 1fr);
    }
}