/* Professional Academic Research Website Styles */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Lato', 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333333;
    background-color: #ffffff;
    font-weight: 400;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 30px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Lato', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 1.8rem;
    color: #1a1a1a;
}

h2 {
    font-size: 1.5rem;
    color: rgba(34, 110, 147, 1);
}

h3 {
    font-size: 1.3rem;
    color: #1a1a1a;
}

h4 {
    font-size: 1.1rem;
    color: rgba(34, 110, 147, 1);
}

h5 {
    font-size: 1rem;
    color: #1a1a1a;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    text-align: justify;
}

strong {
    font-weight: 600;
    color: #1a1a1a;
}

/* Header */
.main-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: 40px 0;
    border-bottom: 3px solid rgba(34, 110, 147, 1);
}

.header-content {
    text-align: center;
}

.paper-title {
    font-size: 2rem;
    font-weight: 900;
    color: #1a1a1a;
    margin-bottom: 20px;
    line-height: 1.3;
}

.conference-info {
    color: #666666;
    font-size: 1rem;
}

.conference-info p {
    margin-bottom: 0.5rem;
}

.venue {
    font-weight: 600;
    color: rgba(34, 110, 147, 1);
}

/* Navigation */
.navigation {
    background: rgba(34, 110, 147, 1);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-item {
    color: white;
    text-decoration: none;
    padding: 15px 20px;
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background-color 0.3s ease;
    border-bottom: 3px solid transparent;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-bottom-color: rgba(255, 255, 255, 0.5);
}

.nav-item.active {
    background-color: rgba(255, 255, 255, 0.15);
    border-bottom-color: white;
}

/* Main Content */
.main-content {
    background: white;
}

.section {
    padding: 50px 0;
    border-bottom: 1px solid #e9ecef;
}

.section.alt-bg {
    background-color: #f8f9fa;
}

.section-heading {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: rgba(34, 110, 147, 1);
}

.section-intro {
    font-size: 1.1rem;
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-style: italic;
}

/* Summary Section */
.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 40px;
    align-items: start;
}

.abstract-box {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid rgba(34, 110, 147, 1);
    margin-bottom: 30px;
}

.abstract-box h3 {
    color: rgba(34, 110, 147, 1);
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.key-contributions {
    background: white;
    padding: 30px 40px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    width: 100%;
    grid-column: 1 / -1;
}

.contributions-list {
    list-style: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px 30px;
}

.contributions-list li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    border-bottom: 1px solid #f0f0f0;
}

.contributions-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: rgba(34, 110, 147, 1);
    font-weight: bold;
}

.contributions-list li:last-child {
    border-bottom: none;
}

/* Attack Overview */
.attack-overview {
    background: white;
    padding: 35px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.attack-overview h4 {
    text-align: center;
    margin-bottom: 20px;
    color: rgba(34, 110, 147, 1);
}

.attack-types-professional {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.attack-type-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 5px solid rgba(34, 110, 147, 1);
}

.attack-icon {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    font-size: 1.1rem;
    color: white;
    flex-shrink: 0;
}

.ora-icon {
    background: #dc3545;
}

.oaa-icon {
    background: #28a745;
}

.attack-type-card h5 {
    margin-bottom: 8px;
    font-size: 1.2rem;
    color: #1a1a1a;
}

.attack-type-card p {
    margin: 0;
    font-size: 1rem;
    color: #666;
    line-height: 1.5;
}

/* Methodology */
.methodology-overview {
    max-width: 900px;
    margin: 0 auto;
}

.method-phases {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.phase-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.phase-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(34, 110, 147, 1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.phase-content h4 {
    margin-bottom: 8px;
    color: #1a1a1a;
}

.phase-content p {
    margin: 0;
    color: #666;
}

/* Experimental Setup */
.experiment-details {
    max-width: 900px;
    margin: 0 auto;
}

.setup-overview {
    margin-bottom: 40px;
}

.setup-specs {
    background: white;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.spec-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
}

.spec-item strong {
    color: rgba(34, 110, 147, 1);
    font-size: 0.9rem;
}

.spec-item span {
    color: #666;
    font-size: 0.9rem;
}

/* Scenario Comparison */
.scenario-comparison {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.scenario-detailed {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: center;
    padding: 30px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.scenario-image {
    width: 100%;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.scenario-description h4 {
    margin-bottom: 15px;
    color: rgba(34, 110, 147, 1);
    font-weight: 700;
}

.scenario-description p {
    margin-bottom: 10px;
    font-size: 0.95rem;
}

/* Video Analysis */
.analysis-content {
    max-width: 1000px;
    margin: 0 auto;
}

.analysis-categories {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.analysis-category h3 {
    color: rgba(34, 110, 147, 1);
    margin-bottom: 15px;
    text-align: center;
}

.category-description {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-style: italic;
}

.video-analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.video-analysis-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.analysis-video {
    width: 100%;
    height: 200px;
    background: #000;
    display: block;
}

.video-metadata {
    padding: 20px;
}

.video-metadata h5 {
    color: rgba(34, 110, 147, 1);
    margin-bottom: 8px;
    font-weight: 600;
}

.video-metadata p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
}

/* Simulation Framework */
.simulation-content {
    max-width: 900px;
    margin: 0 auto;
}

.framework-overview {
    margin-bottom: 50px;
}

.framework-features {
    margin-top: 30px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.feature-item {
    background: white;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    border-top: 4px solid rgba(34, 110, 147, 1);
}

.feature-item h4 {
    color: rgba(34, 110, 147, 1);
    margin-bottom: 12px;
}

.feature-item p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
}

/* Collision Demonstration */
.collision-demonstration {
    background: white;
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.demo-analysis {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.main-analysis-video {
    width: 100%;
    height: 280px;
    background: #000;
    border-radius: 6px;
}

.demo-analysis-text h4 {
    color: rgba(34, 110, 147, 1);
    margin-bottom: 15px;
}

.timeline-analysis {
    margin-top: 20px;
     margin-left: 0;
    text-align: left;
    padding-left: 20px; /* optional for spacing */
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 15px;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
    align-items: start;
}

.timeline-item:last-child {
    border-bottom: none;
}

.timeline-time {
    font-weight: 600;
    color: rgba(34, 110, 147, 1);
    font-size: 0.9rem;
}

.timeline-event {
    color: #666;
    font-size: 0.9rem;
}

/* System Evaluation */
.evaluation-content {
    max-width: 1000px;
    margin: 0 auto;
}

.system-setup {
    margin-bottom: 50px;
}

.platform-info {
    background: white;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    margin-top: 20px;
}

.platform-item {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.platform-item:last-child {
    border-bottom: none;
}

.platform-item strong {
    color: rgba(34, 110, 147, 1);
    font-size: 0.9rem;
}

/* Response Analysis */
.response-intro {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-style: italic;
}

.response-analysis-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.response-item-detailed {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
    padding: 30px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.response-analysis-video {
    width: 100%;
    height: 220px;
    background: #000;
    border-radius: 6px;
}

.response-analysis-text h4 {
    color: rgba(34, 110, 147, 1);
    margin-bottom: 15px;
    font-weight: 700;
}

.response-analysis-text p {
    margin-bottom: 12px;
    font-size: 0.95rem;
}

/* Results Section */
.findings-content {
    max-width: 900px;
    margin: 0 auto;
}

.key-results {
    margin-bottom: 50px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.result-item {
    background: white;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    text-align: center;
    border-top: 4px solid rgba(34, 110, 147, 1);
}

.result-metric {
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
}

.metric-value {
    font-size: 2rem;
    font-weight: 900;
    color: rgba(34, 110, 147, 1);
    line-height: 1;
}

.metric-label {
    font-size: 0.9rem;
    color: #666;
    font-weight: 600;
    margin-top: 5px;
}

.result-item p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
}

/* Security Implications */
.implications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.implication-item {
    background: white;
    padding: 25px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    border-left: 4px solid #dc3545;
}

.implication-item h4 {
    color: #dc3545;
    margin-bottom: 12px;
    font-weight: 600;
}

.implication-item p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
}

/* Footer */
.main-footer {
    background: #1a1a1a;
    color: #ccc;
    padding: 40px 0;
    margin-top: 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.footer-content h4 {
    color: white;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-content p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .paper-title {
        font-size: 1.5rem;
    }
    
    .nav-list {
        flex-direction: column;
    }
    
    .nav-item {
        text-align: center;
        padding: 12px 20px;
    }
    
    .summary-grid,
    .scenario-detailed,
    .demo-analysis,
    .response-item-detailed {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .spec-grid {
        grid-template-columns: 1fr;
    }
    
    .video-analysis-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .section {
        padding: 30px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .paper-title {
        font-size: 1.3rem;
    }
    
    .main-header {
        padding: 25px 0;
    }
    
    .phase-item {
        flex-direction: column;
        text-align: center;
    }
    
    .attack-type-card {
        flex-direction: column;
        text-align: center;
    }
}

/* Horizontal Timeline Styles */
.horizontal-timeline-section {
    margin-top: 40px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 8px;
    border: 1px solid #e9ecef;
}

.horizontal-timeline-section h4 {
    text-align: center;
    color: rgba(34, 110, 147, 1);
    margin-bottom: 20px;
}

.horizontal-timeline {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.timeline-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
}

.timeline-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 25px;
    right: -10px;
    width: 20px;
    height: 2px;
    background: rgba(34, 110, 147, 0.3);
}

.timeline-marker {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(34, 110, 147, 1);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    margin: 0 auto 15px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.timeline-content {
    text-align: center;
}

.timeline-content strong {
    display: block;
    color: #1a1a1a;
    margin-bottom: 5px;
    font-size: 0.95rem;
}

.timeline-content span {
    display: block;
    color: #666;
    font-size: 0.85rem;
    line-height: 1.4;
}

/* Responsive adjustments for horizontal timeline */
@media (max-width: 768px) {
    .horizontal-timeline {
        flex-direction: column;
        gap: 30px;
    }
    
    .timeline-step:not(:last-child)::after {
        display: none;
    }
    
    .timeline-step {
        min-width: auto;
        width: 100%;
    }
}

/* Full-width Key Contributions */
.key-contributions-full {
    margin-top: 40px;
    background: white;
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.key-contributions-full h3 {
    text-align: center;
    color: rgba(34, 110, 147, 1);
    margin-bottom: 30px;
    font-size: 1.4rem;
}

.contributions-list-full {
    list-style: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.contributions-list-full li {
    padding: 15px 20px;
    padding-left: 40px;
    position: relative;
    background: #f8f9fa;
    border-radius: 6px;
    border-left: 4px solid rgba(34, 110, 147, 1);
    font-size: 1rem;
    line-height: 1.5;
    color: #333;
}

.contributions-list-full li::before {
    content: '▸';
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(34, 110, 147, 1);
    font-weight: bold;
    font-size: 1.2rem;
}

@media (max-width: 768px) {
    .contributions-list-full {
        grid-template-columns: 1fr;
    }
    
    .key-contributions-full {
        padding: 25px;
    }
}