:root {
    --font-primary: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-secondary: Georgia, 'Times New Roman', Times, serif;
}

body {
    background-color: #ffffff;
    color: #000000;
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.header {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 2rem 0 2rem;
}

.header-title {
    font-size: 48px;
    line-height: 1.2;
    font-weight: 700;
    text-align: center;
    width: 100%;
    margin: 0;
    padding: 1rem 0;
}

.header-nav {
    display: flex;
    justify-content: space-between;
    width: 100%;
    max-width: 448px;
    margin: 1rem auto 0.5rem auto;
}

.nav-link {
    font-size: 14px;
    font-weight: 700;
    color: #000000;
    text-decoration: none;
    padding: 8px 16px;
    transition: color 0.15s ease-in-out, text-decoration 0.15s ease-in-out;
}

.nav-link:hover,
.nav-link.active {
    color: #004d4d;
    text-decoration: underline;
}

.divider {
    color: #004d4d;
    text-align: center;
    padding: 0.5rem 0;
    width: 100%;
    user-select: none;
}

.main-content {
    max-width: 800px;
    margin: 2.5rem auto 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 24px;
    font-weight: 700;
    line-height: 1.5;
    text-align: center;
    margin: 0 0 2rem 0;
}

.post-list {
    padding-left: 2.5rem;
}

.dotted-divider {
    border-bottom: 2px dotted #004d4d;
    width: 100%;
    margin: 10px 0;
}

.section-block {
    background-color: #f5f5f5;
    padding: 10px 0;
    text-align: center;
    margin-bottom: 20px;
}

.chip {
    background-color: #e0e0e0;
    border: 1px solid #000000;
    padding: 2px 8px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    display: inline-block;
    margin: 0 5px;
}

.chip:hover {
    background-color: #000000;
    color: #ffffff;
}

.list-item {
    font-size: 16px;
    margin-bottom: 8px;
    display: flex;
    gap: 8px;
}

.list-date {
    color: #333333;
}

.list-link {
    color: #004d4d;
    text-decoration: none;
}

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

.see-all {
    font-family: var(--font-secondary);
    font-size: 18px;
    font-style: italic;
    text-align: center;
    margin-top: 20px;
    cursor: pointer;
}

.see-all:hover {
    text-decoration: underline;
}

.project-category {
    font-family: var(--font-secondary);
    font-size: 20px;
    font-weight: bold;
    text-align: center;
    margin: 20px 0;
}

.footer {
    max-width: 800px;
    margin: 2.5rem auto 0 auto;
    padding: 2.5rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-nav {
    display: flex;
    gap: 1rem;
}

.footer-link {
    font-size: 16px;
    text-decoration: none;
    color: #333333;
    transition: color 0.15s ease-in-out;
}

.footer-link.active {
    color: #000000;
    text-decoration: underline;
}

.footer-link:hover {
    color: #004d4d;
}

.books-container {
    font-size: 16px;
    margin-top: 2.5rem;
}

.books-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 448px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.book-item {
    display: flex;
    align-items: center;
}

.book-bullet {
    margin-right: 0.5rem;
}

.book-link {
    margin-left: 0.5rem;
    color: #000000;
    text-decoration: none;
    transition: color 0.15s ease-in-out;
}

.book-link:hover {
    color: #004d4d;
    text-decoration: underline;
}

.back-link-container {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-bottom: 2rem;
    font-size: 16px;
}

.back-link {
    color: #004d4d;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color 0.15s ease-in-out;
}

.back-link:hover {
    color: #000000;
    text-decoration: underline;
}

.notes-list-container {
    padding-left: 2.5rem;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

::selection {
    background-color: #004d4d;
    color: #ffffff;
}

.note-article {
    display: flex;
    flex-direction: column;
}

.note-header {
    width: 100%;
    padding: 1rem 0;
    margin-bottom: 2.5rem;
}

.note-body {
    font-size: 16px;
    line-height: 1.6;
}

.note-body p {
    margin: 0 0 1.5rem 0;
}

.note-subheading {
    margin-top: 2rem !important;
    color: #004d4d;
    text-transform: uppercase;
    font-weight: 700;
}

.note-quote {
    margin: 1.5rem 0 1.5rem 1rem;
    border-left: 2px solid #004d4d;
    padding-left: 1rem;
}

.references-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    font-size: 14px;
}

.references-list li {
    margin-bottom: 0.5rem;
    color: #333333;
}

.media-placeholder {
    border: 2px dashed #004d4d;
    padding: 2rem;
    margin: 1.5rem 0;
    text-align: center;
    background-color: #fcfcfc;
    color: #333333;
}

.media-placeholder-title {
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #004d4d;
}

.media-placeholder-desc {
    font-size: 14px;
    color: #555555;
    margin-bottom: 1rem;
}

.media-placeholder-icon {
    font-size: 32px;
    margin-bottom: 0.5rem;
}

.flex-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}

.flex-child {
    flex: 1 1 300px;
}

@media (max-width: 600px) {
    .header {
        padding: 20px 1rem 0 1rem;
    }

    .header-title {
        font-size: 32px;
        padding: 0.5rem 0;
    }

    .header-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem 0.5rem;
    }

    .nav-link {
        padding: 6px 10px;
        font-size: 13px;
    }

    .main-content {
        padding: 0 1rem;
        margin-top: 1.5rem;
    }

    .note-header {
        margin-bottom: 1.5rem;
    }

    .section-title {
        font-size: 20px;
        margin-bottom: 1.5rem;
    }

    .footer {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem 1rem;
        text-align: center;
    }
}