* {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    text-decoration: none;
    list-style: none;
    box-sizing: border-box;
}

:root {
    --color-primary: #6c63ff;
    --color-success: #00bf8e;
    --color-warning: #f7c94b;
    --color-danger: #f75842;
    --color-danger-variant: rgba(247, 88, 66, 0.4);
    --color-white: #fff;
    --color-light: rgba(255, 255, 255, 0.7);
    --color-black: #000;
    --color-bg: #1f2641;
    --color-bg1: #2e3267;
    --color-bg2: #424890;
    --container-width-lg: 80%;
    --container-width-md: 90%;
    --container-width-sm: 94%;
    --transition: all 400ms ease;
}


body {
    font-family: 'AtkisonHyperlegible';
    line-height: 1.7;
    color: var(--color-white);
    background: var(--color-bg);

}

.container {
    width: var(--container-width-lg);
    margin: 0 auto;
    
}

section {
    padding: 6rem 0;
}

section h2 {
    text-align: center;
    margin-bottom: 4rem;
}

h1, h2, h3, h4, h5 {
    font-family: 'AtkisonHyperlegible';
    line-height: 1.2;
    font-weight: bold;
}

h1 {
    font-family: 'AtkisonHyperlegible';
    font-weight: bold;
    font-size: 2.8rem;
}

h2 {
    font-family: 'AtkisonHyperlegible';
    font-weight: bold;
    font-size: 2.4rem;
}

h3 {
    font-family: 'AtkisonHyperlegible';
    font-weight: bold;
    font-size: 2rem;
}

h4 {
    font-family: 'AtkisonHyperlegible';
    font-weight: bold;
    font-size: 1.7rem;
}

a {
    color: var(--color-white);
}

img {
    width: 100%;
    display: block;
    object-fit: cover;
}

.btn {
    display: inline-block;
    background: var(--color-white);
    color: var(--color-black);
    padding: 1rem 2rem;
    border: 1px solid transparent;
    font-weight: 500;
    transition: var(--transition);
}

.btn:hover {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-primary {
    background: var(--color-danger);
    color: var(--color-white);
}


/* ========================================== NAVBAR ========================================== */

.btn-nav {
    background: var(---color-primary);
    color: var(--color-white);
}

.logo-brand img {
    max-width: 25%;
    height: auto;
}

nav {
    background: transparent;
    width: 100vw;
    height: 5rem;
    position: sticky;
    top: 0;
    z-index: 11;
}

.window-scroll {
    background: var(--color-primary);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
}

.nav__container {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav button {
    display: none;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.nav__menu a {
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav__menu a:hover {
    color: var(--color-bg2);

}


/* ========================================== HEADER ========================================== */

header {
    position: relative;
    top: 5rem;
    overflow: hidden;
    height: 70vh;
    margin-bottom: 5rem;
    min-height: 32rem; /* Establece una altura mínima */
}

.header__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 5rem;
    height: 100%;
}

.header__left p {
    margin: 1rem 0 2.4rem;
}


/* ========================================== CATEGORIES ========================================== */

.categories {
    background: var(--color-bg1);
    height: 32rem;
    min-height: 52rem; /* Establece una altura mínima */
}

.categories h1 {
    line-height: 1;
    margin-bottom: 3rem;
}

.categories__container {
    display: grid;
    grid-template-columns: 40% 60%;
}

.categories__left {
    margin-right: 4rem;
}

.categories__left p {
    font-size: 1.15rem;
    margin: 1rem 0 3rem;
}

.categories__right {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
}

.category {
    background: var(--color-bg2);
    padding: 2rem;
    border-radius: 2rem;
    transition: var(--transition);
    min-height: 22rem; /* Establece una altura mínima */
}

.category:hover {
    box-shadow: 0 3rem 3rem rgba(0, 0, 0, 0.3);
    z-index: 0;
}

.category:nth-child(2) .category__icon {
    background: var(--color-danger);
}

.category:nth-child(3) .category__icon {
    background: var(--color-success);
}

.category:nth-child(4) .category__icon {
    background: var(--color-warning);
}

.category:nth-child(5) .category__icon {
    background: var(--color-success);
}

.category__icon {
    background: var(--color-primary);
    padding: 0.7rem;
    border-radius: 0.9rem;
}

.category h5 {
    font-size: 1.05rem;
    margin: 2rem 0 1rem;
}

.category p {
    font-size: 1.05rem;
}


/* ========================================== POPULAR COURSES ========================================== */

.courses {
    margin-top: 10rem;
}

.courses__container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.course {
    background: var(--color-bg1);
    text-align: center;
    border: 1px solid transparent;
    transition: var(--transition);
}

.course:hover {
    background: transparent;
    border-color: var(--color-primary);

}

.course__info {
    padding: 1.2rem;
}

.course__info p{
    margin: 1.2rem 0 2rem;
    font-size: 1.25rem;
}


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

footer {
    background: var(--color-bg1);
    padding-top: 5rem;
    font-size: 1.5rem;
}

.colaboradores {
    text-align: center; /* Centra las imágenes horizontalmente */
}

.colaboradores img {
    width: 10%;
    height: auto; 
    display: inline-block;
    margin-right: 0;
    margin-right: 4%
}

.colaboradores img:last-child {
    margin-right: 0;
}
.footer__title {
    text-align: center;
}

.footer__copyright {
    text-align: center;
    margin-top: 4rem;
    padding: 1.2rem 0;
    border-top: 1px solid var(--color-bg2);
}

/* ========================================== MEDIA QUERIES (TABLETS) ========================================== */

@media screen and (max-width: 1024px) {
    .container {
        width: var(--container-width-md);
    }

    
    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    h3 {
        font-size: 1.4rem;
    }

    h4 {
        font-size: 1.2rem;
    }

    /* ==================== NAVBAR ==================== */
    nav button {
        display: inline-block;
        background: transparent;
        font-size: 1.8rem;
        color: var(--color-white);
        cursor: pointer;
    }

    nav button#close-menu-btn {
        display: none;
    }

    .nav__menu {
        position: sticky;
        top: 5rem;
        right: 5%;
        height: fit-content;
        width: 18rem;
        flex-direction: column;
        gap: 0;
        display: none;
    }

    .nav__menu li {
        background-color: var(--color-primary);
        border: 1px solid var(--color-bg);
        width: 100%;
        height: 5.8rem;
        animation: animateNavItems 400ms linear forwards;
        transform-origin: top right;
        opacity: 0;
    }

    .nav__menu li:nth-child(2) {
        animation-delay: 200ms;
    }

    .nav__menu li:nth-child(3) {
        animation-delay: 400ms;
    }

    .nav__menu li:nth-child(4) {
        animation-delay: 600ms;
    }

    @keyframes animateNavItems {
        0% {
            transform: rotateZ(-90deg) rotateX(90deg) scale(0.1);
        }
        100% {
            transform: rotateZ(0) rotateX(0) scale(1);
            opacity: 1;
        }
    }

    .nav__menu li a {
        background: var(--color-primary);
        box-shadow: -4rem 6rem 10rem rgba(0, 0, 0, 0.6);
        width: 100%;
        height: 100%;
        display: grid;
        place-items: center;
    }

    .nav__menu li a:hover {
        background: var(--color-bg2);
        color: var(--color-white);
    }

    
    /* ==================== HEADER ==================== */

    header {
        height: 52vh;
        margin-bottom: 4rem;
    }

    .header__container {
        gap: 0;
        padding-bottom: 3rem;
    }

    /* ==================== CATEGORIES ==================== */

    .categories {
        height: auto;
    }

    .categories__container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .categories__left {
        margin-right: 0;
    }

    /* ==================== POPULAR COURSES ==================== */

    .courses {
        margin-top: 0;
    }

    .courses__container{
        grid-template-columns: 1fr 1fr;
    }


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

    .footer__container {
        grid-template-columns: 1fr 1fr;
    }
}


/* ========================================== MEDIA QUERIES (PHONES) ========================================== */

@media screen and (max-width: 600px){
    .container {
        width: var(--container-width-sm);
    }

    /* ==================== NAVBAR ==================== */
    .nav__menu {
        right: 3%;
    }
    
    /* ==================== HEADER ==================== */
    header {
        height: 100vh;
    }

    .header__container {
        grid-template-columns: 1fr;
        text-align: center;
        margin-top: 0;
    }

    .header__left p {
        margin-bottom: 1.3rem;
    }

    /* ==================== CATEGORIES ==================== */
    .categories__left {
        text-align: center;
    }
    
    .categories__right {
        grid-template-columns: 1fr 1fr;
        gap: 0.7rem;
    }

    .category {
        padding: 1rem;
        border-radius: 1rem;
    }

    .category__icon {
        margin-top: 4px;
        display: inline-block;
    }

    /* ==================== POPULAR COURSES ==================== */
    .courses__container{
        grid-template-columns: 1fr;
    }


    /* ==================== FOOTER ==================== */
    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .footer__1 {
        margin: 1rem auto;
    }

    .footer__socials {
        justify-content: center;
    }

    .footer__copyright {
        margin-top: 2rem;
    }

}

/* ==================== FONT ==================== */
@font-face {
    font-family: 'AtkisonHyperlegible';
    src: url(../font/AtkinsonHyperlegible-Bold.ttf) format('truetype');
    font-weight:bold;
}
@font-face {
    font-family: 'AtkisonHyperlegible';
    src: url(../font/AtkinsonHyperlegible-BoldItalic.ttf) format('truetype');
    font-weight:bold;
    font-style:italic;
}

@font-face {
    font-family: 'AtkisonHyperlegible';
    src: url(../font/AtkinsonHyperlegible-Italic.ttf) format('truetype');
    font-style: italic;
}
@font-face {
    font-family: 'AtkisonHyperlegible';
    src: url(../font/AtkinsonHyperlegible-Regular.ttf) format('truetype');
    font-weight: normal;
}

/* Estilo para el foco en botones */
.btn:focus {
    outline: none; /* Elimina el borde predeterminado */
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5); /* Agrega un borde blanco alrededor del botón */
}

/* Estilo para el foco en imágenes */
img:focus {
    outline: none; /* Elimina el borde predeterminado */
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5); /* Agrega un borde blanco alrededor de la imagen */
}

.Visually-Hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
  }

  .accessibility-menu {
    position: sticky;
    bottom: 2vw;
    right: 2vw;
    background-color: #333;
    color: #fff;
    padding: 1.5vw 3vw;
    border-radius: 2vw;
    cursor: pointer;
    width: auto; 
    max-width: 22vw; 
    text-align: center;
}

.accessibility-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.accessibility-menu ul li {
    margin-bottom: 1vw;
}

.accessibility-menu ul li button {
    background-color: #555;
    color: #fff;
    padding: 0.5vw 1vw;
    border: none;
    border-radius: 1vw;
    cursor: pointer;
}


.uil.uil-home {
    font-size: 36px;
}

.uil.uil-volume{
    font-size: 36px;
}

.uil.uil-volume-mute{
    font-size: 36px;
}

.uil.uil-filter{
    font-size: 36px;
}

.uil.uil-filter-slash{
    font-size: 36px;
}

.uil.uil-book-open{
    font-size: 36px;
}



@media (min-width: 1025px) {
    .openbutton {
      visibility: hidden;
      display: none;
    }

    .closebutton {
        visibility: hidden;
        display: none;
    }

    .nav__menu {
        position:sticky !important;
        display: flex !important;
    }
  }