body {
    font-family: "Share Tech Mono", monospace;
    background-color: var(--dark-color);
    color: var(--white);
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    position: relative;
}

/* Hintergrund-Grid und Scanline-Effekt */
body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image: 
        linear-gradient(to right, rgba(var(--gradient-color), 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(var(--gradient-color), 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: -1;
    opacity: 0.3;
}

body::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-color: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 1px,
        rgba(var(--gradient-color), 0.05) 1px,
        rgba(var(--gradient-color), 0.05) 2px
    );
    background-size: 100% 2px;
    animation: scanline 8s infinite linear;
    z-index: -1;
    opacity: 0.1;
}

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

/* Header */
header {
    background-color: color-mix(in srgb, var(--dark-color) 80%, transparent);
    padding: 20px 40px;
    border-bottom: 2px solid var(--light-color);
    box-shadow: 0 0 20px rgba(var(--gradient-color), 0.3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: "Orbitron", sans-serif;
    font-size: 1.8em;
    color: var(--light-color);
    text-shadow: 0 0 8px var(--light-color);
}

.header-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.header-nav ul li {
    margin-left: 30px;
}

.header-nav ul li a {
    color: var(--white);
    text-decoration: none;
    font-size: 1.1em;
    position: relative;
    padding-bottom: 5px;
    transition: color 0.3s ease;
}

.header-nav ul li a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--light-color);
    transition: width 0.3s ease;
}

.header-nav ul li a:hover {
    color: var(--light-color);
}

.header-nav ul li a:hover::after {
    width: 100%;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 50px;
    background-color: rgba(var(--gradient-color), 0.8);
    border-top: 2px solid var(--light-color);
    box-shadow: 0 0 20px rgba(var(--gradient-color), 0.3);
    color: color-mix(in srgb, var(--white) 70%, transparent);
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 15px 20px;
    }

    .header-nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .header-nav ul li {
        margin: 0 15px 10px 15px;
    }
}