/* ============================================
   Professional Layout Improvements
   ============================================ */

/* --- Global Refinements --- */
body.page {
    background-color: #fafafa;
}

/* --- Navigation Enhancement --- */
.navigation-wrapper {
    border-bottom: 3px solid #2c3e50;
    background: #fff;
    padding-top: 1.5em;
    padding-bottom: 0.8em;
}

.site-name a {
    color: #2c3e50 !important;
    letter-spacing: 0.5px;
}

.top-navigation li a {
    color: #555 !important;
    font-size: 0.95rem;
    letter-spacing: 0.3px;
    padding-bottom: 4px !important;
    border-bottom: 2px solid transparent !important;
    transition: all 0.3s ease !important;
}

.top-navigation li a:hover {
    color: #2c3e50 !important;
    border-bottom-color: #3498db !important;
}

/* --- Sidebar Refinements --- */
.article-author-side {
    text-align: center;
}

.article-author-side .bio-photo {
    border: 3px solid #e0e0e0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: box-shadow 0.3s;
}

.article-author-side .bio-photo:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.article-author-side h3 {
    color: #2c3e50;
    margin-top: 12px;
    font-size: 1.1rem;
}

.article-author-side p {
    color: #666;
    font-size: 0.85rem;
    line-height: 1.5;
}

.author-social {
    color: #555 !important;
    transition: color 0.2s, transform 0.2s;
}

.author-social:hover {
    color: #3498db !important;
}

/* --- Main Content Area --- */
#main {
    background: #fff;
    margin-top: 0;
    padding-top: 2em;
}

/* --- Article Title --- */
article.page > h1 {
    color: #2c3e50;
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 0.8em;
    padding-bottom: 0.6em;
    border-bottom: 3px solid #3498db;
}

/* --- Section Headings (h2) --- */
.article-wrap h2 {
    margin-top: 2.5em;
    margin-bottom: 1em;
    padding-bottom: 0.5em;
    border-bottom: 2px solid #e8e8e8;
    color: #2c3e50;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.article-wrap h2:first-of-type {
    margin-top: 0.5em;
}

/* --- Subsection Headings (h3) --- */
.article-wrap h3 {
    margin-top: 1.8em;
    margin-bottom: 0.8em;
    color: #34495e;
    font-size: 1.25rem;
    font-weight: 700;
    padding-left: 12px;
    border-left: 4px solid #3498db;
}

/* --- Paragraph & Text --- */
.article-wrap p {
    line-height: 1.8;
    margin-bottom: 1.2em;
    color: #444;
}

/* --- Lists --- */
.article-wrap ul {
    line-height: 1.8;
    margin-bottom: 1.5em;
    padding-left: 1.2em;
}

.article-wrap ul li {
    margin-bottom: 0.7em;
    color: #444;
    position: relative;
}

.article-wrap li p {
    margin-bottom: 0.4em;
}

/* --- Strong/Bold Text --- */
.article-wrap strong {
    color: #2c3e50;
    font-weight: 700;
}

/* --- Links --- */
.article-wrap a {
    color: #3498db;
    text-decoration: none;
    border-bottom: 1px solid rgba(52, 152, 219, 0.3);
    transition: all 0.2s ease;
}

.article-wrap a:hover,
.article-wrap a:visited:hover {
    color: #2980b9;
    border-bottom-color: #2980b9;
}

/* --- Horizontal Rules --- */
.article-wrap hr {
    border: none;
    border-top: 1px solid #e0e0e0;
    margin: 2em 0;
}

/* --- Publication List Styling --- */
.article-wrap ul li p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Footer --- */
.footer-wrap {
    background: #f5f5f5;
    border-top: 1px solid #e0e0e0;
    padding-top: 2em;
}

.footer-wrap span {
    color: #888;
}

.footer-wrap a {
    color: #666;
    border-bottom: 1px solid transparent;
}

.footer-wrap a:hover {
    color: #3498db;
}

/* --- Language Switcher Enhancement --- */
.lang-switcher {
    background: rgba(255, 255, 255, 0.98) !important;
    border: 1px solid #e0e0e0 !important;
    border-radius: 6px !important;
    padding: 6px 14px !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08) !important;
    font-family: 'PT Sans Narrow', sans-serif;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 1000;
}

.lang-switcher a {
    color: #888;
    text-decoration: none;
    padding: 2px 6px;
    border-radius: 3px;
    transition: all 0.2s;
}

.lang-switcher a.active {
    color: #2c3e50;
    background: #f0f0f0;
}

.lang-switcher a:hover {
    color: #3498db;
}

.lang-switcher .separator {
    color: #ccc;
    margin: 0 2px;
}

/* --- Responsive --- */
@media only screen and (max-width: 768px) {
    article.page > h1 {
        font-size: 1.8rem;
    }

    .article-wrap h2 {
        margin-top: 2em;
        font-size: 1.4rem;
    }

    .article-wrap h3 {
        margin-top: 1.5em;
        font-size: 1.15rem;
    }
}