@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@400;700&family=Roboto:wght@400;700&display=swap');

body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #00008b, #8b008b, #00ff7f);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    color: #ffffff;
}

@keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

header {
    text-align: center;
    padding: 50px 20px;
    background: rgba(0, 0, 0, 0.5);
}

header h1 {
    font-family: 'Exo 2', sans-serif;
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #ff7e5f, #feb47b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

section {
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
}

.feature-card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-family: 'Exo 2', sans-serif;
    font-size: 24px;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 16px;
    line-height: 1.6;
}

.sample-article {
    background: rgba(255, 255, 255, 0.2);
    padding: 30px;
    border-radius: 10px;
    margin-top: 40px;
}

.sample-article h2, .sample-article h3, .sample-article h4 {
    color: #ffd700;
}

.sample-article pre {
    background: #2d2d2d;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

.sample-article code {
    color: #00ff7f;
    font-family: 'Courier New', Courier, monospace;
}

footer {
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.5);
    font-size: 14px;
}

@media (max-width: 480px) {
    header h1 {
        font-size: 32px;
    }
    .feature-card h3 {
        font-size: 20px;
    }
    .feature-card p {
        font-size: 14px;
    }
}

@media (min-width: 481px) and (max-width: 768px) {
    header h1 {
        font-size: 40px;
    }
    .feature-card h3 {
        font-size: 22px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    header h1 {
        font-size: 44px;
    }
    .feature-card h3 {
        font-size: 23px;
    }
}

@media (min-width: 1025px) and (max-width: 1440px) {
    header h1 {
        font-size: 46px;
    }
    .feature-card h3 {
        font-size: 24px;
    }
}

@media (min-width: 1441px) {
    header h1 {
        font-size: 48px;
    }
    .feature-card h3 {
        font-size: 26px;
    }
}