/* Artigos - Design Moderno */

/* Hero Section */
.articles-hero {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.articles-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23ffffff" fill-opacity="0.1"><circle cx="30" cy="30" r="2"/></g></svg>') repeat;
    opacity: 0.3;
}

.articles-hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.articles-hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.articles-hero p {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Featured Article */
.featured-article {
    padding: 80px 0;
    background: #fafafa;
}

.featured-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.article-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: white;
    border-radius: 20px;
    padding: 60px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.article-visual {
    position: relative;
}

.article-preview {
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid #e5e7eb;
}

.preview-header {
    background: linear-gradient(135deg, #f8f9ff 0%, #e0e7ff 100%);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.preview-logo {
    font-size: 2.5rem;
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.preview-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.preview-type {
    font-size: 0.9rem;
    font-weight: 600;
    color: #4f46e5;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.preview-status {
    font-size: 0.8rem;
    color: #059669;
    background: #d1fae5;
    padding: 2px 8px;
    border-radius: 10px;
    width: fit-content;
}

.preview-content {
    padding: 30px;
}

.preview-content h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
    line-height: 1.4;
}

.preview-abstract {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.preview-metrics {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.metric {
    font-size: 0.85rem;
    color: #4f46e5;
    background: #f0f0ff;
    padding: 5px 10px;
    border-radius: 12px;
    font-weight: 500;
}

.article-info {
    space-y: 25px;
}

.article-badge {
    display: inline-block;
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-info h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin: 20px 0 10px;
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
}

.article-subtitle {
    font-size: 1.1rem;
    color: #666;
    font-weight: 500;
    margin-bottom: 30px;
    line-height: 1.5;
}

.article-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin: 30px 0;
    padding: 25px;
    background: #f8f9ff;
    border-radius: 12px;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.meta-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.meta-value {
    font-size: 0.95rem;
    color: #1a1a1a;
    font-weight: 500;
}

.article-abstract {
    margin: 30px 0;
    padding: 30px;
    background: #fafafa;
    border-radius: 12px;
    border-left: 4px solid #4f46e5;
}

.article-abstract h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.article-abstract p {
    color: #444;
    line-height: 1.7;
    font-size: 1rem;
}

.article-keywords {
    margin: 30px 0;
}

.article-keywords h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.keywords-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.keyword {
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.article-structure {
    margin: 30px 0;
}

.article-structure h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.structure-list {
    background: #f8f9ff;
    padding: 25px;
    border-radius: 12px;
    counter-reset: structure-counter;
}

.structure-list li {
    padding: 8px 0;
    color: #444;
    position: relative;
    padding-left: 30px;
    counter-increment: structure-counter;
}

.structure-list li::before {
    content: counter(structure-counter);
    position: absolute;
    left: 0;
    top: 8px;
    background: #4f46e5;
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

.article-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 35px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.3);
}

.btn-outline {
    background: transparent;
    color: #4f46e5;
    border: 2px solid #4f46e5;
}

.btn-outline:hover {
    background: #4f46e5;
    color: white;
}

/* Article Details */
.article-details {
    padding: 80px 0;
    background: white;
}

.details-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.details-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 40px;
    background: #f3f4f6;
    padding: 5px;
    border-radius: 12px;
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    color: #666;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn.active {
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
}

.tab-btn:hover:not(.active) {
    background: #e5e7eb;
    color: #374151;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.content-card {
    background: #fafafa;
    padding: 35px;
    border-radius: 15px;
    border-top: 4px solid #4f46e5;
}

.content-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.content-card ul {
    list-style: none;
    padding: 0;
}

.content-card li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.content-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #4f46e5;
    font-weight: bold;
}

/* Methodology */
.methodology-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 30px;
    text-align: center;
}

.method-steps {
    display: grid;
    gap: 25px;
}

.method-step {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    padding: 30px;
    background: #f8f9ff;
    border-radius: 15px;
    border-left: 4px solid #4f46e5;
}

.step-number {
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 1.2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.step-content p {
    color: #666;
    line-height: 1.6;
}

/* Results */
.results-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 30px;
    text-align: center;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.result-item {
    text-align: center;
    padding: 35px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.result-item:hover {
    transform: translateY(-5px);
}

.result-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.result-item h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.result-item p {
    color: #666;
    line-height: 1.6;
}

/* Impact */
.impact-content h3 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 30px;
    text-align: center;
}

.impact-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.impact-area {
    padding: 35px;
    background: #f8f9ff;
    border-radius: 15px;
    border-top: 4px solid #4f46e5;
}

.impact-area h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.impact-area p {
    color: #666;
    line-height: 1.6;
}

/* Future Research */
.future-research {
    padding: 80px 0;
    background: #fafafa;
}

.future-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: center;
}

.future-research h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.future-research p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.future-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.future-card {
    background: white;
    padding: 35px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    position: relative;
}

.future-card:hover {
    transform: translateY(-5px);
}

.future-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.future-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 15px;
}

.future-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
}

.future-status {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 0.8rem;
    padding: 4px 12px;
    border-radius: 15px;
    font-weight: 500;
    background: #fef3c7;
    color: #92400e;
}

/* Publication Info */
.publication-info {
    padding: 80px 0;
    background: white;
}

.publication-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.publication-info h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 40px;
    text-align: center;
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.publication-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.pub-detail {
    padding: 35px;
    background: #fafafa;
    border-radius: 15px;
    border-top: 4px solid #4f46e5;
}

.pub-detail h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 20px;
}

.pub-detail p {
    color: #666;
    line-height: 1.6;
}

.citation-box {
    background: white;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #374151;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 40px;
    border-radius: 15px;
    width: 90%;
    max-width: 700px;
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #666;
}

.close:hover {
    color: #000;
}

.citation-container h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 30px;
    text-align: center;
}

.format-tab {
    display: flex;
    gap: 5px;
    margin-bottom: 25px;
    background: #f3f4f6;
    padding: 5px;
    border-radius: 8px;
}

.format-btn {
    flex: 1;
    padding: 10px 15px;
    border: none;
    background: transparent;
    color: #666;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.format-btn.active {
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
}

.citation-text {
    background: #f8f9ff;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #374151;
    line-height: 1.6;
    margin-bottom: 20px;
    border: 1px solid #e5e7eb;
}

.copy-btn {
    background: linear-gradient(45deg, #4f46e5, #7c3aed);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease;
    width: 100%;
}

.copy-btn:hover {
    transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
    .articles-hero h1 {
        font-size: 2.5rem;
    }
    
    .articles-hero p {
        font-size: 1.1rem;
    }
    
    .article-showcase {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px 30px;
    }
    
    .article-info h2 {
        font-size: 1.8rem;
    }
    
    .article-meta {
        grid-template-columns: 1fr;
    }
    
    .article-actions {
        flex-direction: column;
    }
    
    .btn {
        text-align: center;
        justify-content: center;
    }
    
    .details-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: center;
    }
    
    .method-step {
        flex-direction: column;
        text-align: center;
    }
    
    .publication-details {
        grid-template-columns: 1fr;
    }
}