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

:root {
    --primary-gradient: linear-gradient(135deg, #1e3c72, #2a5298, #8e44ad, #ff5722);
    --text-color: #ffffff;
    --accent-color: #00ff99;
    --background-color: #0d0d0d;
    --card-background: rgba(255, 255, 255, 0.1);
    --border-color: rgba(255, 255, 255, 0.2);
    --font-family: 'Roboto', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background: var(--primary-gradient);
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    line-height: 1.6;
}

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    padding: 60px 0;
    position: relative;
}

header h1 {
    font-size: 3rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientText 5s ease infinite;
}

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

button.cta {
    margin-top: 20px;
    padding: 15px 30px;
    font-size: 1rem;
    color: var(--background-color);
    background: var(--accent-color);
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: background 0.3s ease;
}

button.cta:hover {
    background: #00cc7a;
}

section {
    margin: 60px 0;
}

.card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.card h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card p {
    font-size: 1rem;
    margin-bottom: 10px;
}

.card pre {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
}

.card code {
    color: #00ff99;
    font-family: 'Courier New', Courier, monospace;
}

img.decorative {
    width: 100%;
    max-width: 320px;
    height: auto;
    margin: 20px 0;
    border-radius: 10px;
}

.footer {
    text-align: center;
    padding: 40px 0;
    background: rgba(0, 0, 0, 0.5);
}

.footer p {
    font-size: 0.9rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #00cc7a;
}

@media (max-width: 1440px) {
    header h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 1200px) {
    .container {
        padding: 30px 15px;
    }

    header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 1024px) {
    .card {
        padding: 15px;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.8rem;
    }

    button.cta {
        padding: 12px 25px;
        font-size: 0.9rem;
    }

    .card h2 {
        font-size: 1.5rem;
    }
}

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

    button.cta {
        padding: 10px 20px;
        font-size: 0.8rem;
    }

    .card h2 {
        font-size: 1.2rem;
    }
}

@media (max-width: 320px) {
    header h1 {
        font-size: 1.2rem;
    }

    button.cta {
        padding: 8px 15px;
        font-size: 0.7rem;
    }

    .card h2 {
        font-size: 1rem;
    }
}