:root { 
    --ojs-primary: #0072c6; 
    --border-color: #ddd; 
    --text-color: #333; 
    --sidebar-bg: #fff; 
}
body { 
    font-family: "Noto Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; 
    line-height: 1.6; 
    color: var(--text-color); 
    margin: 0; 
    padding: 0; 
    background: #fdfdfd; 
}
.top-nav { 
    background: #fff; 
    border-bottom: 4px solid var(--ojs-primary); 
    padding: 15px 40px; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    box-shadow: 0 1px 5px rgba(0,0,0,0.05); 
}
.top-nav .brand { 
    font-size: 1.5em; 
    font-weight: 300; 
    color: #555; 
    text-decoration: none; 
    font-family: Georgia, serif; 
}
.top-nav .menu-links a { 
    text-decoration: none; 
    color: #0072c6; 
    font-weight: 600; 
    font-size: 0.9em; 
    padding: 5px 10px; 
}
.ojs-container { 
    max-width: 1200px; 
    margin: 40px auto; 
    padding: 0 20px; 
    display: grid; 
    grid-template-columns: 3fr 1fr; 
    gap: 40px; 
}
@media(max-width: 900px){ 
    .ojs-container { grid-template-columns: 1fr; } 
}
.article-title { 
    font-family: Georgia, serif; 
    font-size: 2.1em; 
    line-height: 1.25; 
    color: #111; 
    margin: 0 0 20px 0; 
}
.author-block { margin-bottom: 25px; }
.author-name { font-weight: 700; color: #222; font-size: 1.1em; display: block; }
.author-affiliation { font-size: 0.88em; color: #666; margin-bottom: 10px; }
.doi-label-box { font-size: 0.95em; margin: 20px 0; color: #444; }
.doi-link { color: var(--ojs-primary); text-decoration: none; border-bottom: 1px solid rgba(0,114,198,0.3); font-weight: 600; }
.doi-copy-btn { background: #f5f5f5; border: 1px solid #ccc; padding: 2px 8px; font-size: 0.8em; margin-left: 8px; cursor: pointer; border-radius: 3px; }
.section-heading { font-family: Georgia, serif; font-size: 1.3em; border-bottom: 1px solid var(--border-color); padding-bottom: 5px; margin: 35px 0 15px 0; }
.abstract-text { text-align: justify; color: #333; font-size: 1.02em; line-height: 1.7; }
.sidebar-panel { display: flex; flex-direction: column; gap: 30px; }
.sidebar-widget { background: var(--sidebar-bg); border-top: 2px solid #aaa; padding: 15px 0; }
.widget-title { font-size: 0.9em; text-transform: uppercase; letter-spacing: 0.8px; color: #444; font-weight: 700; margin-bottom: 15px; display: block; }
.pdf-button { display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--ojs-primary); color: var(--ojs-primary); padding: 8px 20px; text-decoration: none; font-weight: 600; border-radius: 3px; font-size: 0.95em; justify-content: center; text-align: center; }
.pdf-button:hover { background: var(--ojs-primary); color: white; }
.pdf-button-archived { display: inline-flex; align-items: center; gap: 8px; background: #27ae60; border: 1px solid #27ae60; color: white; padding: 8px 20px; text-decoration: none; font-weight: 600; border-radius: 3px; font-size: 0.95em; justify-content: center; text-align: center; }
.pdf-button-archived:hover { background: #219653; border-color: #219653; }
.btn-xml-sidebar { background: #2c3e50; color: white; font-size: 0.88em; padding: 10px; border-radius: 4px; border: none; cursor: pointer; font-weight: bold; width: 100%; margin-top: 5px; }
.btn-xml-sidebar:hover { background: #34495e; }
.countdown-alert { background: #fff3cd; color: #856404; padding: 12px; border-left: 4px solid #ffeeba; margin-bottom: 20px; font-size: 0.9em; }
input[type="url"], input[type="text"], textarea { width: 100%; padding: 10px; margin: 8px 0 16px 0; border: 1px solid #ccc; box-sizing: border-box; }
textarea { height: 140px; }
.btn-submit { background: var(--ojs-primary); color: white; padding: 10px 20px; border: none; cursor: pointer; font-weight: bold; }
.recent-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.recent-item a { display: block; padding: 6px 8px; background: #f9f9f9; border: 1px solid #eee; text-decoration: none; color: #0072c6; font-size: 0.88em; }