/* Optimized jemdoc.css for alignment, simplicity, and aesthetics */

/* CSS Variables */
:root {
    --primary-color: #527bbd;
    --text-color: #333;
    --background-color: #ffffff;
    --accent-color: #224b8d;
    --divider-color: #ccc;
    --spacing-unit: 20px;
    --font-family: Georgia, serif;
    --max-width: 960px;
    --shadow-color: rgba(0,0,0,0.15);
    --button-border: #ccc;
    --button-bg-hover: #f0f0f0;
    --footer-text-color: rgba(0,0,0,0.4);
    --credit-link-color: rgba(0,0,0,0.6);
    --highlight-bg: #e6f0fa;
    --highlight-border: #b3d4fc;
}

/* Dark mode variables */
[data-theme="dark"] {
    --primary-color: #8ab4f8;
    --text-color: #e0e0e0;
    --background-color: #1a1a1a;
    --accent-color: #90caf9;
    --divider-color: #444;
    --shadow-color: rgba(255,255,255,0.15);
    --button-border: #666;
    --button-bg-hover: #333;
    --footer-text-color: rgba(255,255,255,0.5);
    --credit-link-color: rgba(255,255,255,0.7);
    --highlight-bg: #2c3e50;
    --highlight-border: #546e7a;
}

/* Resets */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { background-color: #eeeeee; }
[data-theme="dark"] html { background-color: #111; }

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--background-color);
    margin: var(--spacing-unit) auto;
    padding: var(--spacing-unit);
    max-width: var(--max-width);
    line-height: 1.6;
}

a { color: var(--primary-color); text-decoration: none; }
a:hover { color: var(--accent-color); text-decoration: underline; }

/* Typography */
h1, h2, h3 { color: var(--primary-color); margin-top: calc(var(--spacing-unit)*1.5); margin-bottom: calc(var(--spacing-unit)*0.75); }
h1 { font-size: 2.5em; }
h2 { font-size: 1.5em; border-bottom: 1px solid var(--divider-color); }
h3 { font-size: 1.2em; margin-bottom: calc(var(--spacing-unit)/2); }
p { margin-bottom: calc(var(--spacing-unit)*0.75); }
ul, ol { margin-bottom: var(--spacing-unit); padding-left: 25px; }
li { margin-top: calc(var(--spacing-unit)/3); }

/* Header */
.header { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; margin-bottom: calc(var(--spacing-unit)*2); }
.header-text { flex: 1; max-width: 600px; }
.toptitle { margin-bottom: calc(var(--spacing-unit)*0.75); }
.chinese-name { font-size: 1.4em; margin-top: 5px; color: var(--primary-color); }
.biography { font-size: 1em; line-height: 1.6; margin-bottom: calc(var(--spacing-unit)*0.75); }
.links { font-size: 0.95em; }
.links a { margin-right: 12px; }
#theme-toggle { background: none; border: 1px solid var(--button-border); padding: 6px 12px; border-radius: 5px; cursor: pointer; color: var(--text-color); transition: background-color 0.3s, border-color 0.3s; }
#theme-toggle:hover, #theme-toggle:focus { background-color: var(--button-bg-hover); border-color: var(--accent-color); outline: none; }

/* Header image */
.header-image { flex-shrink: 0; display: flex; align-items: center; padding-top: 10px; }
.header-image img { max-width: 280px; width: auto; height: auto; border-radius: 10px; box-shadow: 3px 3px 10px var(--shadow-color); object-fit: contain; }

/* Publications */
.publications-list, .publication-list, .projects-list { list-style: none; padding: 0; }
.publication-entry { display: flex; flex-wrap: wrap; margin-bottom: calc(var(--spacing-unit)*1.5); gap: var(--spacing-unit); }
.first-author { background-color: var(--highlight-bg); border-left: 3px solid var(--highlight-border); padding: 12px; border-radius: 5px; box-shadow: 2px 2px 5px var(--shadow-color); }
.publication-image { flex: 0 0 180px; }
.publication-image img { width: auto; max-width: 180px; height: auto; border-radius: 5px; box-shadow: 2px 2px 6px var(--shadow-color); object-fit: contain; }
.publication-details { flex: 1; }

/* Projects */
.project-entry { margin-bottom: calc(var(--spacing-unit)*1.5); padding: calc(var(--spacing-unit)*0.75); border-left: 3px solid var(--primary-color); }

/* Footer */
footer { margin-top: calc(var(--spacing-unit)*2); padding-top: var(--spacing-unit); border-top: 1px solid var(--divider-color); text-align: center; font-size: 0.85em; color: var(--footer-text-color); }
footer .credit-link { color: var(--credit-link-color); text-decoration: underline; }

/* Responsive */
@media (max-width: 768px) {
    .header { flex-direction: column; align-items: center; gap: 20px; }
    .header-text { max-width: 100%; text-align: center; }
    .links { text-align: center; }
    .header-image { padding-top: 0; }
    .header-image img { max-width: 240px; }
    .publication-entry { flex-direction: column; align-items: center; }
    .publication-image { margin-bottom: var(--spacing-unit); }
    .publication-image img { max-width: 280px; }
}
@media (max-width: 480px) {
    body { padding: calc(var(--spacing-unit)/2); }
    h1 { font-size: 2em; }
    h2 { font-size: 1.3em; }
    .header-image img { max-width: 200px; }
}

/* Utilities */
tt { background: #ffffdd; }
[data-theme="dark"] tt { background: #333; }
pre, tt { font-size: 90%; font-family: monaco, monospace; }
em { font-style: italic; }
strong { font-weight: bold; }

@media print { footer, #theme-toggle { display: none; } }