@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@700&family=Roboto:wght@400;500&display=swap');

body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: radial-gradient(circle, rgba(0, 51, 102, 0.9), rgba(0, 0, 0, 0.8));
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    margin: 0;
    color: #FFC107;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 100px 20px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    backdrop-filter: blur(10px);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.3);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255, 215, 0, 0.1), rgba(255, 69, 0, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.card:hover::before {
    opacity: 1;
}

.card img {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 15px;
}

h2, h3 {
    font-family: 'Orbitron', sans-serif;
    color: #FFD700;
    margin-top: 0;
}

p {
    font-size: 16px;
    color: #e0e0e0;
}

pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    color: #00ff00;
    margin: 15px 0;
}

code {
    background: rgba(0, 0, 0, 0.3);
    padding: 2px 5px;
    border-radius: 4px;
    color: #FFA500;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px;
    text-align: center;
}

th {
    background: rgba(255, 215, 0, 0.2);
    color: #FFD700;
}

td {
    color: #cccccc;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 20px;
    }

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

    pre {
        font-size: 12px;
    }
}

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

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, #003366, #3399CC, #003366);
    background-size: 200% 200%;
    animation: aurora-move 15s linear infinite;
    z-index: -1;
    transform: rotate(-15deg);
}

.tip {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.5);
    color: #ffffff;
    padding: 10px 15px;
    border-radius: 5px;
    font-size: 12px;
}