/* --- General Layout & Typography --- */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
    margin: 0;
    padding: 0;
}

/* --- Header Customization --- */
#header {
    background-color: #0056b3;
    color: #ffffff;
    padding: 15px;
    text-align: center;
    font-size: 22px;
    font-weight: bold;
}

/* --- Navigation Panel (Sidebar) --- */
#toc {
    background-color: #ffffff;
    border-right: 2px solid #ddd;
}

#toc a {
    color: #0056b3;
    text-decoration: none;
    font-weight: bold;
}

#toc a:hover {
    color: #ff4500;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
    background: #e9ecef;
    padding: 10px;
    border-radius: 5px;
    font-size: 14px;
}

.breadcrumbs a {
    color: #007bff;
    text-decoration: none;
}

.breadcrumbs a:hover {
    text-decoration: underline;
}

/* --- Main Content Area --- */
#main-content {
    background: #ffffff;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* --- Headings --- */
h1 {
    font-size: 26px;
    color: #0056b3;
    border-bottom: 3px solid #0056b3;
    padding-bottom: 10px;
}

h2 {
    font-size: 22px;
    color: #333;
    border-bottom: 2px solid #ddd;
    padding-bottom: 8px;
}

h3 {
    font-size: 18px;
    color: #444;
}

/* --- Callout Boxes --- */
.info-box, .warning-box, .note-box {
    padding: 15px;
    margin: 20px 0;
    border-radius: 5px;
    font-weight: bold;
}

.info-box {
    background: #e7f3ff;
    color: #004085;
    border-left: 5px solid #0056b3;
}

.warning-box {
    background: #fff3cd;
    color: #856404;
    border-left: 5px solid #ff9800;
}

.note-box {
    background: #d4edda;
    color: #155724;
    border-left: 5px solid #28a745;
}

/* --- Links & Buttons --- */
a {
    color: #0056b3;
    text-decoration: none;
}

a:hover {
    color: #ff4500;
    text-decoration: underline;
}

.button {
    background-color: #0056b3;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
}

.button:hover {
    background-color: #003d80;
}

/* --- Footer --- */
#footer {
    background: #333;
    color: white;
    padding: 15px;
    text-align: center;
    font-size: 14px;
}