@font-face {
    font-family: 'Fira Code';
    src: url('/templates/FiraCode-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Lora', Georgia, serif;
    line-height: 1.8;
    color: var(--foreground);
    background: var(--background);
}

.page-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.masthead {
    border-bottom: 3px double var(--comment);
    padding: 2rem 0 1rem;
    margin-bottom: 3rem;
}

.masthead-container {
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.masthead-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.02em;
}

.masthead-title a {
    color: var(--foreground);
    text-decoration: none;
}

.theme-picker select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--comment);
    background: var(--background);
    color: var(--foreground);
    font-size: 0.8rem;
    font-family: sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
}

.main-content {
    padding: 0 2rem 4rem;
}

.article-masthead {
    margin-bottom: 3rem;
    text-align: center;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--comment);
}

.article-category {
    margin-bottom: 1rem;
}

.category-label {
    display: inline-block;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--main-highlight);
    font-family: sans-serif;
}

.article-headline {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--foreground);
}

.article-byline {
    font-size: 0.95rem;
    color: var(--comment);
    display: flex;
    justify-content: center;
    gap: 1rem;
    font-family: sans-serif;
}

.byline-author {
    font-style: italic;
}

.byline-date::before {
    content: "•";
    margin-right: 0.5rem;
}

.article-body {
    font-size: 1.125rem;
    max-width: 680px;
    margin: 0 auto;
}

.article-body p {
    margin-bottom: 1.5rem;
    text-align: justify;
}

.article-body p:first-of-type::first-letter {
    font-size: 4em;
    line-height: 0.85;
    float: left;
    margin: 0.1em 0.1em 0 0;
    font-weight: 700;
    color: var(--main-highlight);
}

.article-body h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1rem;
    text-align: center;
}

.article-body h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}

.article-body h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    font-style: italic;
}

.article-body a {
    color: var(--main-highlight);
    text-decoration: none;
    border-bottom: 1px solid var(--main-highlight);
}

.article-body a:hover {
    border-bottom-width: 2px;
}

.article-body ul, .article-body ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body code {
    font-family: 'Fira Code', monospace;
    background: var(--background-elevated);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    font-size: 0.85em;
}

.article-body pre {
    font-family: 'Fira Code', monospace;
    background: var(--background-elevated);
    padding: 1.5rem;
    border-radius: 4px;
    overflow-x: auto;
    margin: 2rem 0;
    font-size: 0.85rem;
    line-height: 1.6;
    border-left: 3px solid var(--main-highlight);
}

.article-body pre code {
    background: none;
    padding: 0;
}

.article-body blockquote {
    border-left: 4px solid var(--comment);
    padding-left: 2rem;
    margin: 2rem 0;
    font-style: italic;
    font-size: 1.2rem;
    color: var(--comment);
}

.article-body img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 2.5rem auto;
}

.article-body .code-block-wrapper {
    position: relative;
    margin: 2rem 0;
}

.article-body .code-block-header {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    z-index: 10;
}

.article-body .code-block-lang {
    padding: 0.25rem 0.5rem;
    background: var(--purple);
    color: var(--background);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.3;
    transition: opacity 0.2s;
}

.article-body .code-block-lang:hover {
    opacity: 1;
}

.article-body .code-block-copy {
    padding: 0.25rem 0.5rem;
    background: var(--cyan);
    color: var(--background);
    border: none;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    opacity: 0.3;
    transition: opacity 0.2s;
}

.article-body .code-block-copy:hover {
    opacity: 1;
}

.article-body .code-block-copy:active {
    transform: scale(0.95);
}

.article-body .code-block-copy.copied {
    background: var(--green);
}

.article-body .code-block-wrapper pre {
    margin: 0;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.95rem;
}

.article-body th, .article-body td {
    padding: 0.75rem;
    border: 1px solid var(--comment);
    text-align: left;
}

.article-body th {
    background: var(--background-elevated);
    font-weight: 600;
}

.article-body svg.math-inline {
    display: inline-block;
    vertical-align: middle;
    position: relative;
    height: 0.85em;
}

.article-body figure.math-display-wrapper {
    margin: 2rem auto;
    padding: 1.5rem;
    background: #ffffff;
    border: 1px solid var(--comment);
    display: flex;
    flex-direction: column;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    border-radius: 4px;
}

.article-body svg.math-display {
    display: block;
}

.article-body figure.math-display-wrapper figcaption {
    margin-top: 1rem;
    font-size: 0.9rem;
    font-style: italic;
    color: #000000;
    text-align: center;
}

.article-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--comment);
    text-align: center;
}

.article-topics {
    font-size: 0.9rem;
    font-family: sans-serif;
}

.topics-label {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.8rem;
    color: var(--comment);
}

.topic-link {
    color: var(--main-highlight);
    text-decoration: none;
}

.topic-link:hover {
    text-decoration: underline;
}

.site-footer {
    border-top: 3px double var(--comment);
    padding: 2rem 0;
}

.footer-content {
    padding: 0 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: var(--comment);
    font-family: sans-serif;
}

@media (max-width: 768px) {
    .masthead-container, .main-content, .footer-content {
        padding: 0 1.5rem;
    }
    
    .masthead-title {
        font-size: 2rem;
    }
    
    .article-headline {
        font-size: 2rem;
    }
    
    .article-body {
        font-size: 1rem;
    }
    
    .article-body p:first-of-type::first-letter {
        font-size: 3em;
    }
}