/* ========================================= */
/* ACORDEÓN DE PUBLICACIONES CIENTÍFICAS */
/* ========================================= */

.articulos-container {
    max-width: 1200px;
    margin: 0 auto 50px auto;
    padding: 0 20px;
}

.articulos-acordeon {
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #eef2f6;
}

.articulos-total {
    padding: 20px 30px;
    background: #f8fafc;
    border-bottom: 1px solid #eef2f6;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.articulos-total span {
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
    color: #4a5568;
    font-weight: 500;
}

.articulos-total span i {
    margin-right: 6px;
    color: #007AB4;
}

.articulos-total .total-numero {
    font-weight: 800;
    color: #007AB4;
    font-size: 18px;
}

/* ========================================= */
/* ITEM DEL ACORDEÓN */
/* ========================================= */

.acordeon-item {
    border-bottom: 1px solid #eef2f6;
}

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

.acordeon-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 30px;
    cursor: pointer;
    transition: background 0.3s ease;
    background: #ffffff;
    gap: 15px;
}

.acordeon-header:hover {
    background: #f7fafc;
}

.acordeon-header .ano {
    font-family: 'Montserrat', sans-serif;
    font-size: 20px;
    font-weight: 800;
    color: #1a2634;
    min-width: 70px;
    flex-shrink: 0;
}

.acordeon-header .ano span {
    color: #007AB4;
}

.acordeon-header .cantidad {
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
    color: #718096;
    font-weight: 500;
    background: #f0f4f8;
    padding: 4px 14px;
    border-radius: 20px;
    flex-shrink: 0;
}

.acordeon-header .cantidad i {
    margin-right: 4px;
}

.acordeon-header .acordeon-flecha {
    font-size: 18px;
    color: #007AB4;
    transition: transform 0.3s ease;
    margin-left: auto;
    flex-shrink: 0;
}

.acordeon-item.active .acordeon-header .acordeon-flecha {
    transform: rotate(180deg);
}

.acordeon-header .acordeon-flecha i {
    transition: transform 0.3s ease;
}

.acordeon-item.active .acordeon-header {
    background: #f0f7fa;
    border-bottom: 2px solid #007AB4;
}

/* ========================================= */
/* CONTENIDO DEL ACORDEÓN */
/* ========================================= */

.acordeon-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    background: #fafcfd;
}

.acordeon-item.active .acordeon-content {
    max-height: 2000px;
}

.acordeon-body {
    padding: 20px 30px 30px 30px;
}

/* ========================================= */
/* TABLA DE ARTÍCULOS */
/* ========================================= */

.articulos-tabla {
    width: 100%;
    border-collapse: collapse;
    font-family: 'Montserrat', sans-serif;
    font-size: 13px;
}

.articulos-tabla thead th {
    text-align: left;
    padding: 12px 15px;
    background: #e8edf2;
    color: #1a2634;
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid #d0d7df;
}

.articulos-tabla thead th i {
    margin-right: 6px;
    color: #007AB4;
}

.articulos-tabla thead th:first-child {
    border-radius: 8px 0 0 0;
}

.articulos-tabla thead th:last-child {
    border-radius: 0 8px 0 0;
}

.articulos-tabla tbody td {
    padding: 12px 15px;
    border-bottom: 1px solid #eef2f6;
    vertical-align: middle;
    line-height: 1.5;
    color: #2d3748;
}

.articulos-tabla tbody tr:hover {
    background: #f7fafc;
}

.articulos-tabla tbody tr:last-child td {
    border-bottom: none;
}

.articulos-tabla .col-numero {
    width: 55px;
    text-align: center;
    font-weight: 700;
    color: #007AB4;
    font-size: 13px;
    flex-shrink: 0;
}

.articulos-tabla .col-articulo {
    font-weight: 500;
    color: #1a2634;
}

.articulos-tabla .col-articulo .autores {
    font-weight: 400;
    color: #4a5568;
    font-size: 12px;
    margin-top: 2px;
}

.articulos-tabla .col-descarga {
    width: 90px;
    text-align: center;
    flex-shrink: 0;
}

.articulos-tabla .col-descarga .btn-descarga {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: #007AB4;
    color: white;
    border: none;
    border-radius: 20px;
    font-family: 'Montserrat', sans-serif;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.articulos-tabla .col-descarga .btn-descarga i {
    font-size: 12px;
}

.articulos-tabla .col-descarga .btn-descarga:hover {
    background: #005a8a;
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 122, 180, 0.3);
}

.articulos-tabla .col-descarga .btn-descarga.sin-pdf {
    background: #a0aec0;
    cursor: not-allowed;
}

.articulos-tabla .col-descarga .btn-descarga.sin-pdf:hover {
    background: #a0aec0;
    transform: none;
    box-shadow: none;
}

/* ========================================= */
/* RESPONSIVE - ACORDEÓN */
/* ========================================= */

@media (max-width: 768px) {
    .articulos-container {
        padding: 0 15px;
        margin-bottom: 35px;
    }

    .articulos-total {
        padding: 15px 20px;
        flex-direction: column;
        text-align: center;
    }

    .articulos-total span {
        font-size: 13px;
    }

    .acordeon-header {
        padding: 14px 18px;
    }

    .acordeon-header .ano {
        font-size: 17px;
        min-width: 55px;
    }

    .acordeon-header .cantidad {
        font-size: 12px;
        padding: 3px 12px;
    }

    .acordeon-body {
        padding: 15px 18px 20px 18px;
    }

    .articulos-tabla {
        font-size: 12px;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .articulos-tabla thead th {
        padding: 10px 12px;
        font-size: 11px;
    }

    .articulos-tabla tbody td {
        padding: 10px 12px;
    }

    .articulos-tabla .col-numero {
        width: 40px;
        font-size: 12px;
    }

    .articulos-tabla .col-descarga {
        width: 70px;
    }

    .articulos-tabla .col-descarga .btn-descarga {
        padding: 4px 10px;
        font-size: 10px;
    }
}

@media (max-width: 480px) {
    .articulos-container {
        padding: 0 12px;
        margin-bottom: 28px;
    }

    .articulos-total {
        padding: 12px 16px;
    }

    .articulos-total span {
        font-size: 12px;
    }

    .acordeon-header {
        padding: 12px 14px;
    }

    .acordeon-header .ano {
        font-size: 15px;
        min-width: 45px;
    }

    .acordeon-header .cantidad {
        font-size: 11px;
        padding: 2px 10px;
    }

    .acordeon-body {
        padding: 12px 14px 16px 14px;
    }

    .articulos-tabla {
        font-size: 11px;
    }

    .articulos-tabla thead th {
        padding: 8px 10px;
        font-size: 10px;
    }

    .articulos-tabla tbody td {
        padding: 8px 10px;
    }

    .articulos-tabla .col-numero {
        width: 35px;
        font-size: 11px;
    }

    .articulos-tabla .col-descarga {
        width: 60px;
    }

    .articulos-tabla .col-descarga .btn-descarga {
        padding: 3px 8px;
        font-size: 9px;
    }
}