/* --- Element name selectors --- */

body {
    font-family: Georgia, serif;
    background-color: #f9f7f4;
    color: #1a1a1a;
    max-width: 820px;
    margin: 0 auto;
    padding: 40px 32px;
    line-height: 1.7;
}

h1 {
    font-size: 2rem;
    color: #8b0000;
    border-bottom: 3px solid #8b0000;
    padding-bottom: 10px;
    margin-bottom: 4px;
}

h2 {
    font-size: 1rem;
    font-weight: normal;
    color: #555555;
    margin-top: 0;
    margin-bottom: 32px;
    font-style: italic;
}

h3 {
    font-size: 1.25rem;
    color: #8b0000;
    margin-top: 36px;
    margin-bottom: 8px;
}

h4 {
    font-size: 1rem;
    color: #333333;
    margin-top: 20px;
    margin-bottom: 6px;
}

ul {
    padding-left: 20px;
}

ol {
    padding-left: 20px;
}

li {
    margin-bottom: 6px;
}

a {
    color: #8b0000;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    border: 2px solid #cccccc;
    border-radius: 4px;
    margin: 8px 0;
}


/* --- ID selectors --- */

#course-info-heading {
    background-color: #f0e6e6;
    padding: 6px 12px;
    border-left: 4px solid #8b0000;
}

#course-info {
    background-color: #ffffff;
    border: 1px solid #dddddd;
    border-radius: 4px;
    padding: 14px 14px 14px 30px;
}

#lecture-list {
    background-color: #ffffff;
    border: 1px solid #dddddd;
    border-radius: 4px;
    padding: 14px 14px 14px 36px;
}


/* --- Class selectors --- */

.section-label {
    background-color: #f0e6e6;
    border-left: 4px solid #8b0000;
    padding: 4px 10px;
    color: #8b0000;
}

.topic-item {
    font-weight: bold;
    margin-top: 8px;
}