:root {
    --bg-color: #ffffff;
    --text-color: #2c3e50;
    --link-color: #3498db;
    --heading-bg: #34495e;
    --heading-text: #ffffff;
    --section-bg: #ecf0f1;
    --section-text: #2c3e50;
    --sub-section-bg: #dee2e6;
    --sub-section-text: #2c3e50;
    --data-bg: #d4edda;
    --data-text: #155724;
    --disabled-text: #6c757d;
    --repr-color: #e83e8c;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
}

a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header/Heading */
.theme-heading {
    background-color: var(--heading-bg);
    padding: 1rem;
    margin-bottom: 1rem;
}

.heading-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
}

.heading-text {
    color: var(--heading-text);
    margin: 0;
    font-size: 2rem;
}

.heading-extras {
    color: var(--heading-text);
}

.header-nav {
    margin-top: 1rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.header-nav a {
    color: var(--heading-text);
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
}

.header-nav a:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

/* Sections */
.section {
    margin-bottom: 1.5rem;
}

.section-header {
    padding: 0.5rem 1rem;
}

.section-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.theme-section {
    background-color: var(--section-bg);
    color: var(--section-text);
}

.theme-sub-section {
    background-color: var(--sub-section-bg);
    color: var(--sub-section-text);
}

.theme-data {
    background-color: var(--data-bg);
    color: var(--data-text);
}

.section-body {
    padding: 0.5rem 1rem;
}

.section-content, .section-prelude {
    display: flex;
}

.marginalia {
    min-width: 6em;
    flex-shrink: 0;
    color: var(--disabled-text);
}

.main-content, .prelude-content {
    flex-grow: 1;
}

/* Utilities */
.disabled {
    color: var(--disabled-text);
}

.repr {
    color: var(--repr-color);
}

tt, code, pre {
    font-family: var(--mono-font);
}

/* Multi-column lists */
.multicolumn-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.multicolumn-col {
    flex: 1 1 200px;
    min-width: 150px;
}

/* Index Page */
.index-content {
    padding: 1rem 2rem;
}

.module-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 0.5rem;
    margin-top: 1rem;
}

.module-item {
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.project-name {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    opacity: 0.8;
    margin-bottom: 0.2rem;
}