/* ============================================
   PUBLICATIONS SECTION STYLES
   ============================================ */

.publications {
    background: var(--color-fondo);
    padding: 8rem 0;
}

.section-subtitle {
    text-align: center;
    color: var(--color-gris-medio);
    font-size: 1.1rem;
    margin-top: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Publications Controls */
.publications-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.publications-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.category-filter {
    background: var(--color-blanco);
    border: 2px solid var(--color-gris-claro);
    color: var(--color-gris-oscuro);
    padding: 0.75rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.category-filter:hover {
    border-color: var(--color-borgona);
    color: var(--color-borgona);
    transform: translateY(-2px);
}

.category-filter.active {
    background: var(--color-borgona);
    border-color: var(--color-borgona);
    color: var(--color-blanco);
    box-shadow: var(--shadow-md);
}

.publications-search {
    position: relative;
    flex: 1;
    max-width: 350px;
}

.publications-search input {
    width: 100%;
    padding: 0.75rem 3rem 0.75rem 1.25rem;
    border: 2px solid var(--color-gris-claro);
    border-radius: 2rem;
    font-size: 0.95rem;
    transition: var(--transition);
}

.publications-search input:focus {
    outline: none;
    border-color: var(--color-borgona);
}

.publications-search svg {
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gris-medio);
}

/* Publications Grid */
.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.publication-card {
    background: var(--color-blanco);
    border-radius: 1.5rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid transparent;
}

.publication-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-borgona);
}

.publication-card.featured {
    border-color: var(--color-borgona);
    position: relative;
}

.publication-thumbnail {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--color-borgona), var(--color-borgona-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.publication-thumbnail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect fill="rgba(255,255,255,0.05)" width="50" height="50"/><rect fill="rgba(255,255,255,0.05)" x="50" y="50" width="50" height="50"/></svg>');
    background-size: 20px 20px;
}

.publication-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-borgona);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
}

.featured-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: #FFD700;
    color: var(--color-negro);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
    z-index: 2;
}

.publication-content {
    padding: 2rem;
}

.publication-title {
    font-size: 1.3rem;
    color: var(--color-negro);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.publication-description {
    color: var(--color-gris-oscuro);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.publication-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-gris-claro);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--color-gris-medio);
}

.publication-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn-view,
.btn-download {
    padding: 0.75rem 1.25rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-view {
    background: var(--color-borgona);
    color: var(--color-blanco);
}

.btn-view:hover {
    background: var(--color-borgona-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-download {
    background: transparent;
    color: var(--color-borgona);
    border: 2px solid var(--color-borgona);
}

.btn-download:hover {
    background: var(--color-borgona);
    color: var(--color-blanco);
}

/* No Results */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    grid-column: 1 / -1;
}

.no-results p {
    font-size: 1.2rem;
    color: var(--color-gris-medio);
}

/* PDF Modal */
.pdf-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.pdf-modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--color-blanco);
    border-radius: 1.5rem;
    max-width: 1200px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    background: var(--color-borgona);
    color: var(--color-blanco);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.modal-close:hover {
    background: var(--color-borgona-dark);
    transform: rotate(90deg);
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 2px solid var(--color-gris-claro);
}

.modal-header h3 {
    color: var(--color-borgona);
    font-size: 1.5rem;
    padding-right: 3rem;
}

.modal-body {
    flex: 1;
    overflow: hidden;
}

.modal-body iframe {
    width: 100%;
    height: 100%;
    min-height: 600px;
    border: none;
}

/* Responsive */
@media (max-width: 968px) {
    .publications-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .publications-search {
        max-width: 100%;
    }
    
    .publications-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        max-height: 95vh;
        border-radius: 1rem;
    }
    
    .modal-body iframe {
        min-height: 500px;
    }
}

@media (max-width: 640px) {
    .publication-actions {
        grid-template-columns: 1fr;
    }
    
    .publications-filters {
        width: 100%;
    }
    
    .category-filter {
        flex: 1;
        text-align: center;
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
    
    .modal-body iframe {
        min-height: 400px;
    }
}