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

body {
    font-family: 'Times New Roman', Times, serif;
    background: white;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
.header {
    background: white;
    color: #333;
    padding: 60px 20px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

.header h1 {
    font-size: 2.2em;
    margin-bottom: 30px;
    font-weight: 700;
    color: #000;
}

.authors {
    margin: 30px auto;
    text-align: center;
    max-width: 900px;
}

.author-names {
    font-size: 1.1em;
    margin: 15px auto;
    font-weight: 400;
    text-align: center;
}

.author {
    display: inline-block;
    margin: 0 10px;
    white-space: nowrap;
}

.author sup {
    font-size: 0.8em;
    margin-left: 2px;
}

.affiliations {
    font-size: 0.95em;
    margin: 10px auto;
    color: #666;
    text-align: center;
}

.affiliations sup {
    font-size: 0.9em;
    margin-right: 3px;
}

.emails {
    font-size: 0.9em;
    margin: 15px auto;
    text-align: center;
}

.emails a {
    color: #0066cc;
    text-decoration: none;
    margin: 0 8px;
}

.emails a:hover {
    text-decoration: underline;
}

.conference {
    text-align: center;
}

.conference p {
    font-size: 1.1em;
    margin: 20px auto;
    font-weight: 600;
    color: #000;
}

.links {
    margin-top: 30px;
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    margin: 5px 10px;
    background: white;
    color: #0066cc;
    text-decoration: none;
    border: 1px solid #0066cc;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn:hover {
    background: #0066cc;
    color: white;
}

.btn i {
    margin-right: 6px;
}

/* Section */
.section {
    max-width: 1000px;
    margin: 50px auto;
    padding: 0 40px;
    background: white;
}

h2 {
    color: #000;
    font-size: 1.8em;
    margin-bottom: 20px;
    margin-top: 40px;
    font-weight: 700;
    border-bottom: 2px solid #000;
    padding-bottom: 10px;
}

h2 i {
    margin-right: 10px;
}

p {
    margin: 15px 0;
    text-align: justify;
}

/* Abstract */
.abstract {
    line-height: 1.7;
    font-size: 1em;
    color: #333;
}

.abstract p {
    margin-bottom: 15px;
}

.highlight {
    font-weight: 700;
}

/* Video Section */
.video-container {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 30px auto;
    border: 1px solid #ddd;
}

.video-container video {
    width: 100%;
    height: auto;
    display: block;
}

.caption-box {
    background: #f9f9f9;
    padding: 20px;
    margin-top: 15px;
    border-left: 3px solid #000;
}

.caption-item {
    margin: 10px 0;
    font-size: 0.95em;
    line-height: 1.6;
}

.label {
    font-weight: 700;
    margin-right: 5px;
}

/* Image Container */
.image-container {
    text-align: center;
    margin: 30px 0;
}

.image-container img {
    max-width: 100%;
    height: auto;
    border: 1px solid #ddd;
}

.image-caption {
    margin-top: 15px;
    font-style: italic;
    color: #666;
    font-size: 0.9em;
}

/* Contributions List */
.contributions-list {
    margin: 20px 0;
    padding-left: 0;
}

.contributions-list li {
    margin: 20px 0;
    line-height: 1.7;
    list-style: none;
    position: relative;
    padding-left: 30px;
}

.contributions-list li:before {
    content: "•";
    position: absolute;
    left: 10px;
    font-size: 1.5em;
    font-weight: bold;
}

.contributions-list strong {
    font-weight: 700;
}

/* Tables */
.table-container {
    margin: 30px 0;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
    border: 1px solid #ddd;
}

th, td {
    padding: 10px 15px;
    text-align: center;
    border: 1px solid #ddd;
}

th {
    background: #f0f0f0;
    color: #000;
    font-weight: 600;
    font-size: 0.95em;
}

tr:nth-child(even) {
    background-color: #fafafa;
}

.highlight-row {
    background: #f0f0f0;
    font-weight: 600;
}

table strong {
    font-weight: 700;
}

.section-sep {
    height: 5px;
    background: #f0f0f0;
}

.section-sep td {
    border: none;
    padding: 0;
}

.table-note {
    text-align: center;
    font-style: italic;
    color: #666;
    margin-top: 15px;
    font-size: 0.9em;
}

/* Footer */
footer {
    background: #f5f5f5;
    color: #333;
    padding: 30px 20px;
    text-align: center;
    margin-top: 60px;
    border-top: 1px solid #ddd;
}

.footer-content p {
    margin: 8px 0;
    font-size: 0.9em;
}

.footer-links {
    margin-top: 15px;
}

.footer-links a {
    color: #0066cc;
    text-decoration: none;
    margin: 0 10px;
    font-size: 0.95em;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-links i {
    margin-right: 5px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.6em;
    }
    
    .author-names {
        font-size: 1em;
    }
    
    .author {
        display: block;
        margin: 8px 0;
    }
    
    .affiliations {
        font-size: 0.9em;
    }
    
    .emails a {
        display: block;
        margin: 8px 0;
    }
    
    .section {
        padding: 0 20px;
        margin: 30px 20px;
    }
    
    .btn {
        display: block;
        margin: 10px auto;
        max-width: 200px;
    }
    
    h2 {
        font-size: 1.4em;
    }
    
    table {
        font-size: 0.85em;
    }
    
    th, td {
        padding: 8px 5px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.3em;
    }
    
    .header {
        padding: 40px 15px;
    }
    
    table {
        font-size: 0.75em;
    }
    
    th, td {
        padding: 6px 3px;
    }
}