body {
font-family: 'Segoe UI', Arial, sans-serif;
margin: 40px auto;
max-width: 900px;
background: #000;
color: #eee;
line-height: 1.6;
padding: 20px;
}

header { background: #000; padding: 0 2rem; text-align:center; }

nav { background:#0f0f0f; padding:1rem 0; text-align: center; }

nav a {text-decoration: none;}
nav a:hover {text-decoration: underline;}

h1, h2, h3 {
text-align: center;
color: #fff;
}

h1 { font-size: 1.5em; margin-bottom: 10px; text-shadow: 0 0 5px rgba(255, 55, 55, 0.5);}
h2 { font-size: 1.25em; margin-top: 40px; text-shadow: 0 0 5px rgba(255, 255, 255, 0.5); color: #ccc; text-decoration: underline;}
h3 { color: #069; text-shadow: 0 0 5px rgba(55, 55, 255, 0.5);}

p { text-align: center; max-width: 900px; margin: 20px auto; }
pre {
background: #222;
padding: 15px;
border: 1px solid #444;
overflow-x: auto;
margin: 20px auto;
max-width: 600px;
border-radius: 8px;
box-shadow: 0 0 10px rgba(255, 153, 0, 0.2);
font-size: 1.5em;
}
.chord-diagram {
font-family: monospace;
white-space: pre;
background: #222;
padding: 15px;
margin: 20px auto;
max-width: 300px;
text-align: center;
border: 1px solid #444;
border-radius: 8px;
font-size: 1.2em;
}
ul {
list-style-type: none;
padding-left: 0;
max-width: 700px;
margin: 20px auto;
}
ul li {
margin: 15px 0;
padding: 10px;
background: #1a1a1a;
border-left: 4px solid #b2202a;
border-radius: 4px;
}
ul li strong { color: #b2202a; }

a { color: #069; }


footer {
text-align: center;
margin-top: 60px;
font-size: 0.9em;
color: #888;
}

footer a {color: #069;}
footer a:hover {text-decoration: underline;}