:root {
    /* colores */
    --principal: #3bc47b;
    --secundario: #fc4a1a;
    --tin: #828081;
    --light-gray: #f1f1f1;
    --dark-gray: #383838;
    /* fuentes */
    --display: 'Bebas Neue', sans-serif;
    --encabezados: 'Lato', serif;
    --cuerpo: 'Montserrat', sans-serif;
    /* font-weight */
    --normal: 400;
    --semibold: 500;
    --bold: 600;
    /* z index */
    --z-back: -10;
    --z-normal: 1;
    --z-tooltip: 10;
    --z-fixed: 100;
    --z-modal: 1000;
    /* border-radius */
    --br-small: 5px;
    --br-normal: 10px;
    --br-circle: 50%;
    /* box-shadow */
    --sombra: 10px 10px 20px -10px #000;
    --sombra-light: 10px 10px 20px -12px #000;
    /* tiempo de transicion */
    --tiempo: 0.25s;
}

/* estilos generales */
body {
    font-family: var(--cuerpo);
    font-weight: var(--normal);
}
.container {
    margin: 0 auto;
}
.button {
    transition: background-color var(--tiempo);
}
.button:hover {
    background-color: var(--secundario);
    cursor: pointer;
}
.button--bg-main:hover {
    background-color: var(--principal);
}
/* solucionar el problema de height 0 a contenedores con hijos flotantes */
.clearfix {
    overflow: auto;
}
/* solucionar el problema del menu que cubre las secciones a los que se accede con links */
:target{
    padding-top: 50px;
}
h1, h2, h3, h4, h5, h6 {
    font-family: var(--encabezados);
    margin: 0;
}
ul {
    list-style: none;
    margin: 0;
    padding-inline-start: 0;
}
p {
    margin: 0;
}
a {
    text-decoration: none;
    color: inherit;
}

/* -- header -- */

/* banner*/
.header {
    height: 100vh;
    background-image: url(../img/main-banner.jpg);
    background-size: cover;
    background-position: bottom;
    background-attachment: fixed;
    position: relative;
    color: #FFF;
}
.header::before {
    background-color: rgba(59, 196, 123, 0.6);
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}
.header__container {
    width: 90%;
}
.banner-text {
    position: absolute;
    bottom: 15em;
}
.banner__display {
    font-family: var(--display), sans-serif;
    font-size: 5em;
    letter-spacing: 0.05em;
}
.banner__author {
    font-size: 2em;
}
.author__name {
    text-decoration: underline var(--secundario) solid;
    transition: text-decoration-color var(--tiempo);
}
.author__name:hover {
    text-decoration-color: var(--principal);
}

/* menu de navegacion */
.header__menu {
    width: 100%;
    background-color: rgba(252, 74, 26, 0.75);
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-normal);
}
.main-menu__container {
    width: 90%;
    padding: 0.5em 0;
    font-size: 1em;
}
.main-menu__list {
    float: left;
}
.main-menu__item {
    padding: 5px;
    display: inline-block;
    transition: background-color var(--tiempo);
}
.main-menu__item:hover {
    background-color: rgba(0, 0, 0, 0.1);
}
.main-menu__item:hover .main-menu__sub-list {
    transform: scale(1,1);
}
.main-menu__link {
    display: block;
}
.main-menu__sub-list {
    position: absolute;
    top: 80%;
    transform-origin: top;
    transform: scale(1,0);
    transition: transform var(--tiempo);
}
.main-menu__sub-item {
    padding: 5px;
    background-color: var(--secundario);
}

/* barra de busqueda */
.main-menu__search-bar {
    float: right;
}
.search-bar__element {
    background-color: rgba(0, 0, 0, 0.1);
    border: 1px solid #FFF;
    color: #FFF;
    float: left;
}
.search-bar__element--input {
    padding: 5px 4px;
}
.search-bar__element--input::placeholder {
    color: inherit;
}
.search-bar__element--input:focus {
    outline: none;
}
.search-bar__element--button {
    padding: 5px;
    border-left: none;
}

/* -- cuerpo principal -- */

.main {
    color: var(--tin);
    font-size: 1.25em;
}
.main__container {
    width: 70%;
    padding: 3em 0;
}

/* info principal */
.main-info {
    margin-bottom: 5em;
}
.main-info__text {
    width: 55%;
    line-height: 1.5em;
    float: left;
}
.main-info__title {
    margin-bottom: 0.75em;
    color: #000;
    font-size: 2rem;
}
.main-info__ill {
    width: 44%;
    float: right;
}
.main-info__img {
    width: 90%;
    margin: 0 auto;
    display: block;
}

/* lenguajes utilizados */
.languages__title {
    color: #000;
    font-size: 1.5rem;
    text-align: center;
    margin: 30px 0;
}
.languages__language {
    width: 50%;
    float: left;
}
.language__card {
    width: 50%;
    max-width: 150px;
    margin: 0 auto;
    padding: 30px;
    background-color: var(--light-gray);
    border-radius: var(--br-normal);
}
.language__ill {
    width: 100%;
}
.language__img {
    width: 100%;
    display: block;
}
.language__name {
    color: #000;
    font-weight: var(--semibold);
    text-align: center;
    padding-top: 10px;
    border-top: 1px solid var(--tin);
    margin-top: 20px;
}

/* sobre mi */
.about-me {
    margin-bottom: 5em;
}
.about-me__title {
    color: #000;
    font-size: 1.5rem;
    margin-bottom: 1em;
}
.about-me__ill {
    width: 7.5%;
    float: left;
    position: relative;
}
.about-me__photo {
    width: 150px;
    border-radius: var(--br-circle);
    border: 1px solid #FFF;
    box-shadow: 0 0 0 5px var(--principal);
    transition: box-shadow var(--tiempo);
    position: absolute;
    left: 5px;
    top: 25px;
}
.about-me__photo:hover {
    box-shadow: 0 0 0 5px var(--secundario);
}
.about-me__info {
    width: 92.5%;
    margin: 0;
    background-color: var(--light-gray);
    line-height: 1.5em;
    border-radius: var(--br-normal);
    float: right;
}
.about-me__text {
    padding: 20px 20px 20px 100px;
}
.about-me__button {
    margin: 0 auto 20px;
    padding: 0;
    background-color: var(--principal);
    border: none;
    border-radius: var(--br-small);
    display: block;
}
.about-me__button__link {
    color: #FFF;
    font-size: 0.9em;
    font-weight: var(--semibold);
    padding: 10px;
    display: block;
}

/* formulario de contacto */
.contact {
    font-size: 0.9em;
}
.contact__form {
    margin: 0 auto;
    padding: 1.5em;
    background-color: var(--light-gray);
    border-radius: var(--br-normal);
    box-shadow: var(--sombra);
    width: 40%;
    box-sizing: border-box;
}
.form__title {
    color: #000;
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 1em;
}
.form__input {
    width: 100%;
    margin: 0.25em 0 0.5em;
    padding: 5px;
    border: 2px solid transparent;
    display: block;
}
.form__input--email:valid {
    border-color: rgba(0, 255, 0, 0.25);
}
.form__input--email:invalid {
    border-color: rgba(255, 0, 0, 0.25);
}
.form__input--msg {
    min-width: 100%;
    max-width: 100%;
    min-height: 100px;
    max-height: 200px;
}
.form__button {
    margin: 20px auto 0;
    padding: 5px 15px;
    background-color: var(--principal);
    border: none;
    border-radius: var(--br-small);
    color: #FFF;
    font-weight: var(--semibold);
    display: block;
}

/* footer */

.footer {
    background-color: var(--dark-gray);
    color: var(--tin);
    padding: 1.5em 0 1em;
}
.footer__container {
    width: 70%;
}
.footer__menus {
    margin-bottom: 1em;
}
.footer__secction {
    width: 33.33%;
    float: left;
}
.footer__list--sub {
    margin-top: 0.25em;
    padding-left: 1em;
}
.footer__item {
    margin-bottom: 0.5em;
    font-weight: var(--normal);
}
.footer__item--title {
    font-weight: var(--semibold);
}
.footer__link:hover {
    color: #FFF;
}
.footer__icon {
    margin-right: 0.5em;
}
.footer__author, .footer__date {
    width: 50%;
    display: inline-block;
}
.footer__author {
    float: left;
}
.footer__date {
    float: right;
}