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

body {
    font-family: "American Typewriter", serif;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    padding: 1rem;
    z-index: 1000;
}

.logo-container {
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    height: 40px;
    width: auto;
    transition: transform 0.3s ease;
}

.logo:hover {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

main {
    margin-top: 80px;
    display: flex;
    justify-content: center;
    min-height: calc(100vh - 80px);
}

.content-column {
    width: 100%;
    max-width: 800px;
    padding: 8rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.content-column-narrow {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.headline {
    font-size: 3.5rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: left;
    margin: 0;
    color: #000000;
    font-family: "American Typewriter", serif;
}

.divider {
    width: 100%;
    height: 1px;
    background-color: #ffffff;
    margin: 1rem 0;
}

.divider-blue {
    width: 100%;
    height: 0.5px;
    background-color: #267ba0;
    border: none;
    margin: 2rem 0;
}

.subheading {
    font-size: 1.5rem;
    font-weight: normal;
    line-height: 1.4;
    text-align: left;
    margin: 0;
    color: #000000;
    font-family: "American Typewriter", serif;
}

.section-subheading2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #222;
    font-family: "American Typewriter", serif;
    margin-bottom: 0;
    margin-top: 0;
    text-align: left;
}

.section-subheading2 + * {
    margin-top: 0-1.5rem;
}

.equation {
    font-size: 2.25rem;
    font-style: italic;
    font-weight: normal;
    line-height: 1.4;
    text-align: center;
    margin: 1.5rem 0 1.5rem 0;
    color: #000000;
    font-family: Georgia, serif;
    background-color: #FFCD00;
    padding: 0.1em 0.2em;
    border-radius: 2px;
    display: inline;
}

.section {
    margin-top: 4rem;
}

.section-subheading {
    font-size: 2rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: left;
    margin: 0 0 1.5rem 0;
    color: #000000;
    font-family: "American Typewriter", serif;
}

.section-body {
    font-size: 1.25rem;
    font-weight: normal;
    line-height: 1.6;
    text-align: left;
    margin: 0 0 1rem 0;
    color: #000000;
    font-family: "American Typewriter", serif;
}

.section-body:last-child {
    margin-bottom: 0;
}

.section-subheading + .section-body,
.section-subheading2 + .section-body {
    margin-top: -1.5rem, 0, 0, 0;
}

.footer {
    width: 100%;
    max-width: 800px;
    margin: 4rem auto 2rem;
    padding: 2rem;
    text-align: left;
    border-radius: 2px;
}

.social-links {
    display: flex;
    justify-content: flex-start;
    gap: 2rem;
    margin-bottom: 0.5rem;
}

.social-link {
    width: 24px;
    height: 24px;
    transition: transform 0.3s ease;
}

.social-link:hover {
    transform: scale(1.1);
}

.copyright {
    font-size: 0.875rem;
    color: #000000;
    font-family: "American Typewriter", serif;
}

.section-link {
    color: #267ba0;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.section-link:hover {
    opacity: 0.7;
}

.outlined-image {
    border: 0.5px solid #267ba0;
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
    width: 200px;
    height: 200px;
    object-fit: cover;
}

.figure-caption {
    font-family: Georgia, serif;
    font-style: italic;
    font-size: 0.85rem;
    text-align: left;
    margin: -1.5rem 0 0.5rem 0;
    width: 200px;
    margin-left: auto;
    margin-right: auto;
}

.version {
    color: #267ba0;
    font-size: 0.7rem;
    font-family: "American Typewriter", serif;
}

.footnotes {
    font-size: 0.85rem;
    color: #222;
    font-family: Georgia, serif;
    margin: 2rem 0 0 0;
    padding-left: 0;
    text-align: left;
}
.footnotes ol {
    padding-left: 1.5em;
    margin: 0;
}
.footnotes li {
    margin-bottom: 0.5em;
    line-height: 1.5;
}
.footnotes a {
    color: #267ba0;
    text-decoration: none;
}

.footnote-ref {
    color: #267ba0;
    text-decoration: none;
    font-size: 0.8em;
}

.bio {
    margin-bottom: 2rem;
}

.bio:last-child {
    margin-bottom: 0;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .content-column {
        padding: 6rem 1.5rem 1.5rem;
        gap: 1.5rem;
    }

    .headline {
        font-size: 2.5rem;
    }

    .subheading {
        font-size: 1.25rem;
    }

    .logo {
        height: 30px;
    }

    .navbar {
        padding: 0.75rem;
    }

    .equation {
        font-size: 1.75rem;
    }

    .section {
        margin-top: 3rem;
    }

    .section-subheading {
        font-size: 1.75rem;
        margin-bottom: 1.5rem;
    }

    .section-subheading2 {
        font-size: 1.25rem;
        margin-bottom: 0;
    }

    .section-subheading2 + * {
        margin-top: -1.5rem;
    }

    .section-body {
        font-size: 1.1rem;
    }

    .footer {
        margin: 3rem auto 1.5rem;
        padding: 1.5rem;
    }

    .social-links {
        gap: 1.5rem;
        margin-bottom: 0.5rem;
    }

    .content-column-narrow {
        max-width: 90vw;
    }
}

@media screen and (max-width: 480px) {
    .content-column {
        padding: 5rem 1rem 1rem;
        gap: 1rem;
    }

    .headline {
        font-size: 2rem;
    }

    .subheading {
        font-size: 1rem;
    }

    .logo {
        height: 25px;
    }

    .navbar {
        padding: 0.5rem;
    }

    .equation {
        font-size: 1.25rem;
    }

    .section {
        margin-top: 2rem;
    }

    .section-subheading {
        font-size: 1.25rem;
        margin-bottom: 1.5rem;
    }

    .section-subheading2 {
        font-size: 1rem;
        margin-bottom: 0;
    }

    .section-subheading2 + * {
        margin-top: 0;
    }

    .section-body {
        font-size: 1rem;
    }

    .footer {
        margin: 2rem auto 1rem;
        padding: 1rem;
    }

    .social-links {
        gap: 1rem;
        margin-bottom: 0.5rem;
    }

    .content-column-narrow {
        max-width: 98vw;
    }
}