/* Styling for the Adrian Dane Bulgarian course */
body {
    font-family: Georgia, "Times New Roman", serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    background-color: #fafafa;
    color: #0f3153;
}

header.header {
    background-color: #0f3153;
    color: #ffffff;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    border-bottom: 4px solid #f6bd60;
}

header .logo {
    width: 160px;
    height: auto;
    margin-right: 15px;
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
}

header p {
    margin: 2px 0 0 0;
    font-size: 0.8rem;
    color: #f6f7f9;
}

nav ul {
    list-style: none;
    margin: 0;
    margin-left: auto;
    padding: 0;
    display: flex;
    gap: 10px;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
    font-size: 0.85rem;
}

nav ul li a:hover {
    text-decoration: underline;
}

/* Author link styling */
header .author-link {
    margin-left: 15px;
    font-size: 0.75rem;
    color: #f6f7f9;
    text-decoration: none;
}

header .author-link:hover {
    text-decoration: underline;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
}

h1, h2, h3 {
    color: #0f3153;
}

h1 {
    margin-top: 0;
}

pre, code {
    background-color: #f4f4f4;
    border: 1px solid #e0e0e0;
    padding: 10px;
    overflow-x: auto;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.9rem;
}

details {
    margin-bottom: 10px;
}

.footer {
    background-color: #0f3153;
    color: #ffffff;
    text-align: center;
    padding: 15px 20px;
    margin-top: 40px;
    font-size: 0.85rem;
}