body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #0d1117;
    color: #c9d1d9;
    line-height: 1.6;
}
nav {
    background-color: #161b22;
    padding: 10px 20px;
    border-bottom: 1px solid #30363d;
    text-align: center;
}
nav a {
    color: #58a6ff;
    text-decoration: none;
    margin: 0 15px;
    font-weight: 500;
}
nav a.active {
    color: #c9d1d9;
    text-decoration: none;
}
nav a:hover {
    text-decoration: underline;
}
header {
    text-align: center;
    padding: 40px 20px;
    background-color: #161b22;
    border-bottom: 1px solid #30363d;
}
.logo {
    max-width: 250px;
    height: auto;
    margin: 0 auto 20px auto;
}
h1 {
    font-size: 2.2em;
    margin: 0;
    color: #58a6ff;
}
h2 {
    font-size: 2.2em; /* Uniform size for main sections */
    color: #58a6ff;
    margin: 30px 0 10px;
}
h3 {
    font-size: 1.2em;
    color: #c9d1d9;
    margin: 15px 0 5px;
}
.container {
    max-width: 700px;
    margin: 0 auto;
    padding: 20px;
}
p {
    font-size: 1.1em;
    margin: 15px 0;
}
ol {
    padding-left: 20px;
}
li {
    margin: 8px 0;
    font-size: 1em;
}
/* Styles for lists on the main page */
ul {
    list-style-type: none;
    padding: 0;
}
li::before {
    content: "• ";
    color: #58a6ff;
}
ul.nested {
    margin-left: 20px;
}
.spoiler {
    margin: 10px 0;
    background-color: #21262d;
    border-radius: 5px;
    overflow: hidden;
}
.spoiler-title {
    padding: 10px;
    background-color: #161b22;
    cursor: pointer;
    font-weight: 500;
    display: flex; /* For the arrow icon */
    justify-content: space-between;
    align-items: center;
}
.spoiler-title::after {
    content: '▼'; /* Down arrow (closed) */
    font-size: 0.8em;
    transition: transform 0.2s;
}
.spoiler-title.open::after {
    content: '▲'; /* Up arrow (open) */
}
.spoiler-content {
    padding: 10px;
    display: none;
}
.spoiler-content li {
    margin: 5px 0;
}
.spoiler-content.active {
    display: block;
}
a.back-link {
    color: #58a6ff;
    text-decoration: none;
    font-weight: 500;
}
a.back-link:hover {
    text-decoration: underline;
}
a.download-btn, a.donate-btn, a.root-hiding-btn {
    display: inline-block;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    margin-right: 10px;
    margin-top: 15px;
    transition: background-color 0.2s;
}
a.download-btn {
    background-color: #238636;
    color: #ffffff;
}
a.download-btn:hover {
    background-color: #2ea043;
}
a.donate-btn {
    background-color: #1e40af;
    color: #ffffff;
}
a.donate-btn:hover {
    background-color: #1e3a8a;
}
a.root-hiding-btn {
    background-color: #8250df;
    color: #ffffff;
}
a.root-hiding-btn:hover {
    background-color: #6b21a8;
}
.donate-spoiler {
    display: none;
    margin-top: 10px;
    padding: 10px;
    background-color: #21262d;
    border-radius: 5px;
}
a.support-link {
    color: #58a6ff;
    text-decoration: none;
    font-weight: 500;
}
a.support-link:hover {
    text-decoration: underline;
}
footer {
    text-align: center;
    padding: 15px;
    background-color: #161b22;
    border-top: 1px solid #30363d;
    font-size: 0.85em;
    color: #8b949e;
}

/* ==================================== */
/* MOBILE OPTIMIZATION (max-width 600px)*/
/* ==================================== */
@media (max-width: 600px) {
    /* Main elements scaling */
    h1 {
        font-size: 1.8em;
    }
    h2 {
        font-size: 1.8em;
    }
    .container {
        padding: 15px;
    }
    .logo {
        max-width: 150px;
    }
    
    /* FIX FOR NAVIGATION BAR */
    nav {
        display: flex; /* Enable flexible layout */
        justify-content: center; /* Center links */
        flex-wrap: wrap; /* Allow wrapping only if needed */
        padding: 10px 5px;
    }
    nav a {
        margin: 5px; /* Reduce margin for compact display */
        font-size: 0.9em;
        white-space: nowrap; /* Prevent word break within the link text itself */
    }
}