/* Body styles */
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: radial-gradient(circle at 50%, #1e1f29, #2a2e38);
    color: #e0e0e0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden; /* Hide horizontal overflow */
    position: relative;
}

/* Animated background */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50%, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8));
    z-index: -1;
    animation: backgroundAnimation 20s infinite alternate;
}

/* Header styles */
header {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.8));
    border-bottom: 4px solid #00BFFF;
    border-radius: 0 0 30px 30px;
    margin-bottom: 20px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3));
    opacity: 0.5;
    animation: pulse 3s infinite;
}

h1 {
    font-size: 4rem;
    color: #00BFFF;
    margin: 0;
    text-shadow: 0 6px 15px rgba(0, 191, 255, 0.8);
    animation: glow 1.5s ease-in-out infinite alternate;
}

/* Paragraph styles */
p {
    font-size: 1.3rem;
    color: #ddd;
    margin: 10px 0;
    font-style: italic;
    line-height: 1.8;
}

/* Main content styles */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.6);
    overflow-y: auto; /* Allow vertical scrolling */
    max-height: calc(100vh - 120px); /* Adjust for header and margin */
    position: relative;
}

/* List styles */
ul {
    list-style: none;
    padding: 0;
    max-width: 1000px;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

/* List item styles */
li {
    background: rgba(255, 255, 255, 0.1); /* Near transparent background */
    padding: 20px;
    text-align: center;
    border-radius: 20px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s ease, box-shadow 0.4s ease, background 0.4s ease;
    backdrop-filter: blur(20px); /* Strong glass effect */
    flex: 1 1 calc(25% - 30px); /* Four columns layout */
    min-width: 250px; /* Adjust for better responsiveness */
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

li::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.2));
    opacity: 0.2;
    transition: opacity 0.4s ease;
}

li:hover::before {
    opacity: 0.3;
}

li:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
    background: rgba(255, 255, 255, 0.2); /* Enhanced glass effect on hover */
    animation: liPulse 1s infinite;
}

/* Link styles */
a {
    text-decoration: none;
    color: #00BFFF;
    font-weight: 500;
    transition: color 0.3s ease, transform 0.3s ease;
    display: inline-block;
    position: relative;
    font-size: 1.1rem;
    padding: 5px 0;
}

a::after {
    content: '';
    display: block;
    width: 0;
    height: 3px;
    background: #00BFFF;
    position: absolute;
    bottom: -5px;
    left: 0;
    transition: width 0.3s ease;
}

a:hover::after {
    width: 100%;
}

a:hover {
    color: #1E90FF;
    transform: translateY(-3px);
}

/* Add this to your CSS file */
#particles-js {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; /* Ensure particles are behind other content */
}

/* Animations */
@keyframes glow {
    from {
        text-shadow: 0 0 8px rgba(0, 191, 255, 0.9);
    }
    to {
        text-shadow: 0 0 20px rgba(0, 191, 255, 1);
    }
}

@keyframes pulse {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.7;
    }
    100% {
        opacity: 0.5;
    }
}

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

@keyframes liPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    li {
        flex: 1 1 calc(50% - 20px); /* Two columns on smaller screens */
    }
}

@media (max-width: 480px) {
    li {
        flex: 1 1 100%; /* Single column on very small screens */
    }
}