body {
    background-color: black;
    color: #00ff00;
    font-family: 'Press Start 2P', monospace;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    text-shadow: 0 0 5px #00ff00;
}

/* efeito CRT */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 0, 0.05),
        rgba(0, 255, 0, 0.05) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
}

header {
    text-align: center;
    padding: 40px 20px;
    border-bottom: 2px solid #00ff00;
}

header h1 {
    font-size: 18px;
}

nav {
    text-align: center;
    margin: 20px 0;
}

nav a {
    color: #00ff00;
    text-decoration: none;
    margin: 0 15px;
    font-size: 10px;
}

nav a:hover {
    color: black;
    background-color: #00ff00;
    padding: 5px;
}

section {
    padding: 40px 20px;
    border-bottom: 1px dashed #00ff00;
}

h2 {
    font-size: 14px;
    margin-bottom: 20px;
}

.box {
    border: 1px solid #00ff00;
    padding: 20px;
    margin-bottom: 20px;
}

footer {
    text-align: center;
    padding: 20px;
    font-size: 8px;
}

/* cursor piscando */
.cursor::after {
    content: "_";
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0; }
}