:root {
    /*variables en css*/
    --blanco: #ffffff;
    --oscuro: #212121;
    --primario: #FFC107;
    --secundario: #0097A7;
    --gris: #757575;

    --fuente-principal: 3.8rem;
}
html {
    font-size: 62.5%;
    box-sizing: border-box;
    scroll-snap-type: y mandatory;    
}

/** Scroll Snap **/
.services,
.main-nav,
.contact-form {
    scroll-snap-align: center;
    scroll-snap-stop: always;
}

*, *:before, *:after {
    box-sizing: inherit;
}

/*1rem = 10px*/
body {
    font-size: 16px;
    background-image: linear-gradient(to top, #3498DB 0%, var(--blanco) 100% );
}

h1 {
    font-size: 3.8rem;
}

h2 {
    font-size: 2.8rem;
}

h3 {
    font-size: 1.8rem;
}

h1, h2, h3 {
    text-align: center;
}

.shadow {    
    -webkit-box-shadow: 2px 3px 20px -4px rgba(0,0,0,0.5);
    -moz-box-shadow: 2px 3px 20px -4px rgba(0,0,0,0.5);
    box-shadow: 2px 3px 20px -4px rgba(0,0,0,0.5);
    background-color: var(--blanco);
    padding: 2rem;
    border-radius: 1rem;
}

.container {
    max-width: 120rem; 
    margin: 0 auto;
}

.button {
    background-color: var(--secundario);
    color: var(--blanco);
    padding: 1rem 3rem;
    margin-top: 1rem;
    font-size: 2rem;
    text-decoration: none;
    text-transform: uppercase;
    font-weight: bold; 
    border-radius: 5rem;
    width: 90%;
    text-align: center;
    border:none;
}

@media (min-width: 768px) {
    .button {
        width: auto;
    }
}

.button:hover {
    cursor:pointer;
}

/** utilidades**/
.w-sm-100{
    width: 100%;    
}
@media (min-width: 768px) {
    .w-sm-100{
        width: auto;
    }
}
.flex {
    display: flex;
}

.alinear-derecha {
    justify-content: flex-end;
}

/* navegacion */

.nav-bg {
    background-color: var(--secundario);
}

.main-nav {    
    display: flex;    /*habilita flex*/
    flex-direction: column;     
}

@media (min-width: 768px) {
    .main-nav {
        flex-direction: row;
        justify-content: space-evenly; /*justifica el menu y le da una espacio entre ellos*/
    }
    
}
.main-nav a {
    display:block;
    text-align: center;
    color: var(--blanco);
    text-decoration: none; /*quita el subrayado de los enlaces*/
    font-size: 2rem;
    font-weight: 700;
    padding: 1rem;
}

.main-nav a:hover {
    background-color: var(--primario);
    color: var(--oscuro);
}

.hero {
    background-image: url(../img/hero.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    height: 450px;
    position: relative;
    margin-bottom: 2rem;    
}
.content-hero {
    position: absolute;
    background-color: rgba( 0, 0, 0, .7 );
    background-color: rgb( 0 0 0 / 70% );
    width: 100%;
    height: 100%;

    /* para alinear verticalmente*/
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.content-hero h2,
.content-hero p {
    color: var(--blanco);
}

.location {
    display: flex;
    align-items: flex-end;
}

@media (min-width: 768px) {
    .services {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        column-gap: 1rem;
    }       
}
.service {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.service h3{
    color: var(--secundario);
    font-weight: normal;
}
.service p{
    line-height: 2;
    text-align: center;
}
.service .icons {
    height: 15rem;
    width: 15rem;
    background-color: var(--primario);
    border-radius: 50%;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

/* contacto */
.contact-form{
    background-color: var(--gris);
    width: min( 60rem, 100% );
    margin: 0 auto;
    padding: 2rem;
    border-radius: 1rem;
}
.contact-form fieldset{    
    border:none;
}
.contact-form legend{
    text-align: center;
    font-size: 1.8rem;
    text-transform: uppercase;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--primario);
}
@media (min-width: 768px) {
    .contenedor-campos{
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto 20rem;
        column-gap: 1rem;
    }
    .campo:nth-child(3),
    .campo:nth-child(4){
        grid-column: 1 / 3;
    }
}


.campo {
    margin-bottom: 1rem;
}

.campo label{
    color: var(--blanco);
    font-weight: bold;
    margin-bottom: .5rem;
    Display: block;
}

.campo textarea{
    height: 18rem;
}

.input-text{
    width: 100%;
    border: none;
    padding: 1.5rem;
    border-radius: .5rem;
}

/*footer*/
.footer {
    text-align: center;
}