/* ==== GOOGLE FONTS ====*/
@import url('https://fonts.googleapis.com/css2?family=Roboto+Mono&display=swap');

/* ==== VARIABLES CSS ====*/
:root{ 
    --header-heigth: 5rem;

    /*========== Colors ==========*/
   
    --text-color: #ffffff;
    --first-color: #0857cc;
    --first-color-alt: #042786;
    --title-color: #393939;
    --text-color: #707070;
    --text-color-light: #A6A6A6;
    --body-color: #FBFEFD;
    --container-color: #FFFFFF;

    /*========== Font and typography ==========*/
    --body-font: 'Roboto Mono', sans-serif;
    --biggest-font-size: 1.6rem;
    --h1-font-size: 1.5rem;
    --h2-font-size: 1.25rem;
    --h3-font-size: 1rem;
    --normal-font-size: .938rem;
    --small-font-size: .813rem;
    --smaller-font-size: .75rem;

    /*========== Font weight ==========*/
    --font-medium: 500;
    --font-semi-bold: 600;

    /*========== Margenes ==========*/
    --mb-1: .5rem;
    --mb-2: 1rem;
    --mb-3: 1.5rem;
    --mb-4: 2rem;
    --mb-5: 2.5rem;
    --mb-6: 3rem;

    /*========== z index ==========*/
    --z-tooltip: 10;
    --z-fixed: 100;
}

@media screen and (min-width: 768px){
    :root{
      --biggest-font-size: 2.25rem;
      --h1-font-size: 1.5rem;
      --h2-font-size: 1.3rem;
      --h3-font-size: 1.15rem;
      --normal-font-size: 1rem;
      --small-font-size: .875rem;
      --smaller-font-size: .813rem;
    }
}

/*========== BASE ==========*/
*,::before,::after{
    box-sizing: border-box;
}
  
html{
    scroll-behavior: smooth;
}

body{
    margin: var(--header-heigth) 0 0 0;
    font-family: var(--body-font);
    font-size: var(--normal-font-size);
    background-color: var(--body-color);
    color: var(--text-color);
    line-height: 1.6;
}

h1,h2,h3,p,ul{
    margin: 0;
}

ul{
    padding: 0;
    list-style: none;
}

a{
    text-decoration: none;
}

img{
    max-width: 100%;
    height: auto;
}

/*==========CLASS CSS=========*/
.section {
    padding: 4rem 0 2rem;
}

.section-title, .section-subtitle{
    text-align: center;
}

.section-title{
    font-size: var(--h1-font-size);
    color: var(--title-color);
    margin-bottom: var(--mb-3);
}

.section-subtitle{
    display: block;
    color: var(--first-color);
    font-weight: var(--font-medium);
    margin-bottom: var(--mb-1);
}

/*========== LAYOUT ==========*/
.bd-container{
    max-width: 1400px;
    width: calc(100% - 2rem);
    margin-left: var(--mb-2);
    margin-right: var(--mb-2);
}
  
.bd-grid{
    display: grid;
    gap: 1.5rem;
}
  
.l-header{
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-fixed);
    background-color: black
}

/*========== NAV ==========*/
.nav{
    max-width: 1400px;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}



.nav__link, .nav__toggle{
    color: var(--text-color);
    font-weight: var(--font-medium);
}

.nav__item{
    margin-bottom: var(--mb-2);
}



.nav__link{
    transition: .3s;
}

.nav__link:hover{
    color: var(--first-color);
}

.nav__toggle{
    font-size: 1.3rem;
    cursor: pointer;
}

/* Show menu */
.show-menu{
    top: var(--header-height);
}

/* Active menu */
.active-link{
    color: var(--first-color);
}

/* Change background header */
.scroll-header{
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

/* Scroll top */
.scrolltop{
    position: fixed;
    right: 1rem;
    bottom: -20%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: .3rem;
    background: rgba(6, 71, 156, 0.5);
    border-radius: .4rem;
    z-index: var(--z-tooltip);
    transition: .4s;
    visibility: hidden;
}

.scrolltop:hover{
    background-color: var(--first-color-alt);
}

.scrolltop__icon{
    font-size: 1.8rem;
    color: var(--body-color);
}

/*Show scrolltop*/
.show-scroll{
    visibility: visible;
    bottom: 1.5rem;
}

/*========== HOME ==========*/
.home__container{
    height: calc(100vh - var(--header-height));
    align-content: center;
}

.home__title{
    font-size: var(--biggest-font-size);
    color: var(--first-color);
    margin-bottom: var(--mb-1);
}

.home__img{
    width: 300px;
    justify-self: center;
}


.home__subtitle{
    font-size: var(--h1-font-size);
    color: var(--title-color);
    margin-bottom: var(--mb-4);
    text-align: center;
}

/*========== ABOUT ==========*/
.about__data{
    text-align: center;
}
  
.about__description{
    margin-bottom: var(--mb-3);
}
  
.about__img{
    width: 500px;
    border-radius: .5rem;
    justify-self: center;
}

.board__content{
    min-width: 300px;
    /*flex: 0 0 calc(33%-20px);*/
    position: relative;
    display:flex;
    flex-direction: column;
    


}


/*========= PARTNERS=============*/
.partner__container{
    display: flex;
    flex-flow: row wrap;
    /*flex-wrap: wrap;*/
    /*grid-template-columns: repeat(2, 1fr);*/
    justify-content: center;
}

.partner__description{
    text-align: center;
}


.partner__img {
    width: 250px;
    align-self: center;
    bottom: 0;
    border-radius: 0.5rem;
    position: relative;
}

.partner__name {
    font-weight: var(--font-semi-bold);
    color: var(--title-color);
    font-size: var(--normal-font-size)
}

/*========== THE BOARD ==========*/
.board__container{
    display: flex;
    flex-flow: row wrap;
    /*flex-wrap: wrap;*/
    /*grid-template-columns: repeat(2, 1fr);*/
    justify-content: center;
    
}

.board__description{
    text-align: center;
}

.board__content{
    min-width: 300px;
    /*flex: 0 0 calc(33%-20px);*/
    position: relative;
    display:flex;
    flex-direction: column;
    background-color: var(--container-color);
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(3,74,40,.15);
    padding: .75rem;


}

.board__img {
    width: 140px;
    align-self: center;
    margin-bottom: var(--mb-2);
    border-radius: 0.5rem;
}

.board__name {
    font-weight: var(--font-semi-bold);
    color: var(--title-color);
    font-size: var(--normal-font-size)
}



.board__detail, .board__email {
    font-size: var(--small-font-size);
}

/*========== Contact us ==========*/


.contact__description {
    text-align: center;
    display:block;
}

.contact__social{
    font-size: 1.7rem;
    color: var(--first-color);
    margin-right: var(--mb-2);
    text-align: center;
}

.footer__copy {
    font-size: var(--small-font-size);
    text-align: center;
}

/*========== FOOTER ==========*/

.footer__container{
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    row-gap: 2rem;
  }

.footer__content {
    display:block;
    text-align: center;
    font-size: var(--small-font-size);
    margin: .25rem 0 var(--mb-3);
}

.footer__social{
    font-size: 1.7rem;
    color: var(--first-color);
    margin-right: var(--mb-2);
    text-align: center;
}


/*========== MEDIA QUERIES ==========*/
@media screen and (min-width: 576px){
    

    /*.board__container {
        grid-template-columns: repeat(3, 1fr);
        align-items: center;
    }*/

    

    .home__img, .about_img{
        width: 500px;
        justify-self: center;
    }

    .previous_data {
        margin-left:auto;
        margin-right: auto;
        width: 300px;
    }

}

@media screen and (min-width: 768px){
    body{
      margin: 0;
    }

    .home__img{
        width: 600px;
    }
  
    .section{
      padding-top: 8rem;
    }
  
    .nav{
      height: calc(var(--header-height) + 1.5rem);
    }
    .nav__list{
      display: flex;
    }
    .nav__item{
      margin-left: var(--mb-5);
      margin-bottom: 0;
    }
    .nav__toggle{
      display: none;
    }
  
    
    .home__container{
      height: 105vh;
      justify-items: center;
    }
  
    
    .about__container,
    .partner__container,
    .board__container{
      margin-top: var(--mb-6);
    }
  
    

    .about__container, .partner__container,.board_container{
        column-gap: 4rem;
    }


    .board__content{
      padding: 1.5rem;
    }
    .board__img{
      width: 140px;
    }
  
    
}

@media screen and (min-width: 960px){
    .bd-container{
      margin-left: auto;
      margin-right: auto;
    }
  
    
  
    .about__container,
    .board__container{
      column-gap: 7rem;
    }
}

.previous_data {
    margin-left:auto;
    margin-right: auto;
    width: 500px;
}

.previous__title{
    text-align: center;
}



/*========== MEDIA QUERIES ==========*/
@media screen and (max-width: 576px){
    .board__container {
        grid-template-columns: repeat(1, 1fr);
        align-items: center;
        flex-wrap: wrap;
        justify-content: center;
    
    }

    

    .previous_data, .previous__title {
        margin-left:auto;
        margin-right: auto;
        width: 300px;
    }

}

body {
    background-color: #a9a9a9b7; /* light mode background color /
    color: #222; / light mode text color */
    }
    
    body.dark-mode {
    background-color: #5b5b5b8b; /* dark mode background color /
     / dark mode text color */
    color: #f9f9f9;
    }
    
    body.light-mode {
    background-color: #ffffff07; /* set background color for light mode */
    }
    
    body.light-mode header {
    background-color: #a3a3a3; /* set the background color of the header for light mode /
     / set the text color of the header for light mode */
    color: #000;
    }
    
    .dark-mode-toggle {
    display: block;
    position: fixed;
    bottom: 430px;
    left: 20px; /* Change 'right' to 'left' /
    z-index: 9999;
    width: 90px;
    height: 50px;
    border-radius: 50px;
    background-color: #fff; / set background color for light mode /
    color: #222; / set text color for light mode */
    font-size: 16px;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    border: 2px solid #afafaf;
    }
    
    .dark-mode-toggle.active {
    background-color: #222; /* set background color for dark mode 
     / set text color for dark mode */
    color: #fff;
    }
    
    .dark-mode-toggle.light {
    background-color: #fff; /* set background color for light mode /
    color: #000; / set text color for light mode */
    }
    
    .dark-mode-toggle.dark {
    background-color: #d2d2d2; /* set background color for dark mode /
    color: #f9f9f9; / set text color for dark mode */
    }
    
    .dark-mode-toggle:hover {
    background-color: #0036b46e;
    border: 2px solid #c8c7d1;
    }
    
    .dark-mode-toggle:hover .toggle-text {
    transform: translateX(20px);
    opacity: 1;
    }
    
    body.dark-mode header {
    background-color: #3535357e; /* set the background color of the header for dark mode /
    / set the text color of the header for dark mode */
    color: #ffffff; 
    }
    
    body.light-mode header {
    background-color: #d8d8d8; /* set the background color of the header for light mode /
     / set the text color of the header for light mode */
    color: #000000;
    }
    
    :root {
    --bg-color: #333; /* set the background color variable for dark mode /
    --text-color: #f9f9f9; / set the text color variable for dark mode */
    }
    
    body, button {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: none;
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    }