:root {
    --bg-color: #ffffff;
    --text-color: #111111;
    --heading-color: #000000;
    --border-color: #000000;
    --accent-bg: #f5f5f5;
    --link-color: #333333;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --heading-color: #ffffff;
    --border-color: #555555;
    --accent-bg: #1e1e1e;
    --link-color: #aaaaaa;
}

body {
    font-family: "Times New Roman", Times, serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    transition: background-color 0.3s, color 0.3s;
}

.controls {
    text-align: right;
    margin-bottom: 2rem;
}

.btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.8rem;
    text-transform: uppercase;
    transition: all 0.2s;
}

.btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

h1, h2, h3 {
    color: var(--heading-color);
    font-family: "Georgia", serif;
}

h1 {
    font-size: 2.2rem;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    border-bottom: 3px double var(--border-color);
    padding-bottom: 1rem;
    display: inline-block;
}

.subtitle {
    font-style: italic;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.heavy-rule {
    border: 0;
    border-top: 4px solid var(--heading-color);
    margin: 2rem 0;
}

.intro {
    font-size: 1.2rem;
    text-align: justify;
    margin-bottom: 4rem;
}

.documents h2 {
    text-align: center;
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 2rem;
    text-decoration: underline;
}

.doc-card {
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    margin-bottom: 2rem;
    background-color: var(--accent-bg);
}

.doc-card h3 {
    margin-top: 0;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.doc-summary {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    text-align: justify;
}

.btn-link {
    display: inline-block;
    text-decoration: none;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.9rem;
    text-transform: uppercase;
    transition: all 0.2s;
}

.btn-link:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

footer {
    text-align: center;
    font-size: 0.8rem;
    margin-top: 4rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}