/*Page Styles*/
* {
    margin: 0;
    padding: 0;
    font-family: 'Vollkorn', serif;
    list-style-type: none;
    text-decoration: none;
    box-sizing: border-box;
    outline: none;
}

html {
    font-size: 62.5%;
}

:root {
    --primary-color: #2b81e4;
    --secondary-color: #eee;
    --white-color: #fff;
    --grey-color: #555;
    --light-grey-color: #777;
}

.center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background-color: var(--secondary-color);
    margin: 3.5rem;
    box-shadow: 0 1rem 3rem var(--grey-color);
    overflow: hidden;
}
/*End Page Styles*/

/*Key Frames*/
@keyframes drop-letters {
    0%{
        transform: translateY(0);
    }
    10%{
        transform: translateY(0);
    }
    15%{
        transform: translateY(-100%);
    }
    20%{
        transform: translateY(0);
    }
    100%{
        transform: translateY(0);
    }
}

@keyframes image-float {
    0% {
        transform:translateZ(40rem);
        opacity: 1;
    }
    40% {
        transform:translateZ(-500rem)
        translateX(150rem);
        opacity: .8;
    }
    70% {
        transform:translateZ(-1500rem)
        translateX(800rem);
        opacity: .6;
    }
    80% {
        transform:translateZ(-50rem)
        translateX(100rem);
        opacity: .8;
    }
    100% {
        transform:translateZ(40rem);
        opacity: 1;
    }
}

@keyframes contact-bg {
    0% {
        background-color: #3d3d3d;
    }
    25% {
        background-color: #ced8e4;
    }
    50%{
        background-color: #1e81f3;
    }
    75% {
        background-color: #ff7842;
    }
    100% {
        background-color: #3d3d3d;
    }
}
/*End Key Frames*/

/*Navigation*/
.navbar-icon {
    width: 5.5rem;
    height: 5.5rem;
    background-color: var(--white-color);
    border-radius: 50%;
    cursor: pointer;
    flex-direction: column;
}

.open-navbar-icon {
    position: fixed;
    top: 6.5rem;
    left: 6.5rem;
    z-index: 500;
}

.navbar-icon .line {
    height: .2rem;
    width: 3.5rem;
    background-color: var(--light-grey-color);
}

.open-navbar-icon .line {
    margin: .3rem 0;
}

.navbar-wrapper {
    width: 100vw;
    height: 100vh;
    background-color: rgba(255, 255, 255, .7);
    position: fixed;
    left: 0;
    bottom: -100%;
    opacity: 0;
    z-index: 300;
    padding: 3.5rem 5.5rem 3.5rem 3.5rem;
    transition: bottom .5s, opacity .2s;
}

.change .navbar-wrapper {
    bottom: 0;
    opacity: 1;
    transition: bottom .5s, opacity .2s .25s;
}

.navbar {
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, .5), rgba(0, 0, 0, .3)),
    url(images/navbar-bg.jpg) center no-repeat;
    background-size: cover;
    position: relative;
    overflow-y: hidden;
}

.close-navbar-icon {
    position: absolute;
    top: 2.5rem;
    right: 3rem;
    z-index: 300;
}

.close-navbar-icon .line {
    position: absolute;
}

.line-1 {
    transform: rotate(40deg);
}

.line-2 {
    transform: rotate(-40deg);
}

.nav-list {
    height: 100%;
    display: flex;
}

.nav-link {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white-color);
    text-transform: uppercase;
    width: 100%;
    opacity: .8;
    position: relative;
    top: -100%;
    transition: all .3s;
}

.change .nav-link {
    top: 0;
}

.nav-link:hover {
    opacity: 1;
    color: var(--primary-color);
}

.change .nav-link:nth-child(1){
    transition: top 1s .4s, opacity .3s, color .3s;
}

.change .nav-link:nth-child(2){
    transition: top 1s .6s, opacity .3s, color .3s;
}

.change .nav-link:nth-child(3){
    transition: top 1s .8s, opacity .3s, color .3s;
}

.change .nav-link:nth-child(4){
    transition: top 1s 1s, opacity .3s, color .3s;
}

.change .nav-link:nth-child(5){
    transition: top 1s 1.2s, opacity .3s, color .3s;
}
/*End Navigation*/

/*Section 1*/
.header {
    width: 100%;
    height:calc(100vh - 7rem);
    background: linear-gradient(rgba(18,113, 255, .5), rgba(18,113,255,.3)), url(images/header-bg.jpg) center no-repeat;
    background-size: cover;
    position: relative;
    perspective: 100rem;
}

.header-text {
    text-align:center;
    text-transform: uppercase;
    letter-spacing: .1rem;
    text-shadow: 0 .3rem .5rem var(--grey-color);
}

.heading {
    font-size: 8rem;
    color:var(--white-color);
}

.header-paragraph {
    font-size: 3rem;
    font-weight: 500;
    color: var(--secondary-color);
    max-width: 70rem;
    margin: auto;
}

.logo{
    position: absolute;
    top: 4rem;
    right: 4rem;
}

.logo h1 {
    display: flex;
}

.logo h1 span {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-color);
    text-transform: uppercase;
    background-color: var(--white-color);
    width: 3.5rem;
    height: 3.5rem;
    margin: .5rem;
    border-radius: 50%;
}

.logo h1 span:nth-child(1) {
    animation: drop-letters 5s .1s infinite;
}

.logo h1 span:nth-child(2) {
    animation: drop-letters 5s .2s infinite;
}

.logo h1 span:nth-child(3) {
    animation: drop-letters 5s .3s infinite;
}

.logo h1 span:nth-child(4) {
    animation: drop-letters 5s .4s infinite;
}

.logo h1 span:nth-child(5) {
    animation: drop-letters 5s .5s infinite;
}

.logo h1 span:nth-child(6) {
    animation: drop-letters 5s .6s infinite;
}

.logo h1 span:nth-child(7) {
    animation: drop-letters 5s .7s infinite;
}

.header-image {
    width: 35%;
    animation: image-float 150s infinite;
}
/*End Section 1*/

/*Section 2*/
.popular-tours {
    padding: 5rem 0 10rem 0;
}

.popular-tours-heading {
    font-size: 8rem;
    text-align: center;
    margin-bottom: 8rem;
    color: var(--primary-color);
    text-shadow: 0 .1rem .2rem var(--primary-color);
}

.cards-wrapper {
    display: flex;
    justify-content: space-evenly;
}

.card {
    width: 35rem;
    position: relative;
    perspective: 150rem;
}

.card-image {
    width: 100%;
    border-radius: .3rem .3rem 0 0;
}

.front-side {
    text-align:center;
    background-color: var(--white-color);
    border-radius: .3rem;
    position: relative;
    z-index: 10;
    transition: opacity .4s, transform .4s, box-shadow .4s;
}

.change > .front-side {
    transform: translateZ(-5rem) translateX(3rem);
    box-shadow: 0 2rem 4rem #777;
    opacity: .5;
    z-index: 0;
}

.tour-name {
    font-size: 2.5rem;
    font-weight: 700;
    text-transform: uppercase;
    position: absolute;
    top: 30%;
    right: 1.5rem;
    color: var(--white-color);
    text-shadow: 0 0 1rem #000;
}

.card-list {
    width: 80%;
    margin: auto;
    padding: 2rem 0 3rem 0;
}

.card-list-item {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--light-grey-color);
    margin: 2rem 0;
    border-bottom: .1rem solid var(--primary-color);
    padding-bottom: 1.5rem;
}

.back-side {
    position: absolute;
    top: 0;
    background-color: var(--primary-color);
    width: 100%;
    height: 100%;
    border-radius: .3rem;
    box-shadow: 0 2rem 4rem #777;
    flex-direction: column;
    transform: translateZ(-5rem) translateX(3rem);
    opacity: .5;
    transition: opacity .4s, transform .4s, box-shadow .4s;
}

.change > .back-side {
    transform: translateZ(0) translateX(0);
    box-shadow: 0.5rem 2rem #aaa;
    opacity: .9;
}

.tour-price {
    font-size: 5rem;
    font-weight: 400;
    color: var(--white-color);
    margin-bottom: 3rem;
}

.card-button {
    color: var(--primary-color);
    background-color: var(--white-color);
    border: none;
    font-size: 2.5rem;
    padding: 1rem 2rem;
    letter-spacing: .2rem;
    border-radius: 5rem;
    cursor: pointer;
}

.navigation-button {
    position: absolute;
    top: .5rem;
    left: .5rem;
    padding: .5rem;
    background-color: rgba(255, 255, 255, .8);
    color: var(--light-grey-color);
    border-radius: .3rem;
    border: none;
    font-size: 1.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .2rem;
    cursor: pointer;
}
/*End Section 2*/

/*Section 3*/
.stories {
    padding: 10rem 0;
    position: relative;
}

.stories-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.story-bg {
    background-color: rgba(238, 238, 238, .85);
    padding: 5rem;
    margin: 5rem;
    width: 70%;
    box-shadow: 0 2rem 5rem rgba(51, 51, 51, .4);
    transform: skewX(20deg);
}

.story {
    transform: skewX(-20deg);
    display: flex;
}

.story-image {
    width: 20rem;
    height: 20rem;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 5rem;
}

.story-text {
    letter-spacing: .1rem;
}

.story-heading {
    font-size: 2.5rem;
    text-transform: uppercase;
    color: var(--grey-color);
    margin-bottom: 1rem;
}

.story-paragraph {
    font-size: 1.8rem;
    color: var(--light-grey-color);
}

.story-paragraph::first-letter {
    margin-left: 1rem;
}

.video-containter {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: .4;
}

.bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
/*End Section 3*/

/*Section 4*/
.contact {
    padding: 15rem 0 20rem 0;
    text-align: center;
    background: url(images/contact-us-bg.png) center no-repeat;
    background-size: cover;
    animation: contact-bg 35s infinite;
}

.contact-heading {
    font-size: 7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .5rem;
    color: var(--white-color);
    text-shadow: 0  1rem 2rem #000;
    margin-bottom: 8rem;
}

.contact-form {
    width: 70rem;
    height: 50rem;
    background-color: rgba(255, 255, 255, .95);
    margin:auto;
    flex-direction: column;
    border-radius: .5rem;
    box-shadow: 0 1rem 3rem #000;
    padding: 5rem;
}

.input-group {
    width: 100%;
    display: flex;
    flex-direction: column;
    margin: 1rem 0;
    position: relative;
}

.input-groups {
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.input-groups .input-group {
    width: 48.5%;
}

.input-group input,
.input-group textarea {
    padding: 3rem 1rem 1rem 1rem;
    background-color: var(--secondary-color);
    border: .1rem solid var(--secondary-color);
    font-size: 1.4rem;
    color: var(--light-grey-color);
    letter-spacing: .1rem;
    border-radius: .5rem;
    transition: border .3s;
}

.input-group input:focus,
.input-group textarea:focus {
    border: .1rem solid #ccc;
}

.input-group textarea {
    max-height: 15rem;
    max-width: 100%;
}

.input-group label{
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1rem;
    color: var(--grey-color);
    position: absolute;
    top: 1rem;
    left: 1rem;
}

.form-btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.6rem;
    letter-spacing: .1rem;
    margin-top: 1rem;
    background-color: var(--light-grey-color);
    color: var(--white-color);
    border-radius: .5rem;
    border: none;
    cursor: pointer;
    transition: background-color .4s;
}

.form-btn:hover {
    background-color: var(--grey-color);
}
/*End Section 4*/

/*Section 5*/
.footer {
    background-color: var(--grey-color);
    padding: 4rem 0 2rem 0;
}

.footer-list {
    display: flex;
    justify-content: center;
}

.footer-link {
    font-size: 2rem;
    color: var(--white-color);
    margin: 0 2rem;
    background-color:var(--grey-color);
    padding: .3rem 3rem;
    letter-spacing: .3rem;
    transition: all .2s;
}

.footer-link:hover {
    transform: rotate(-10deg);
    box-shadow: 0 2rem 3rem #000;
}

.footer-paragraph {
    text-align: center;
    font-size: 1.5rem;
    color: var(--secondary-color);
    letter-spacing: .2rem;
    margin-top: 5rem;
}
/*End Section 5*/

/*media queries*/
@media(max-width: 1200px) {
    .card-wrapper {
        flex-direction: column;
        align-items: center;
    }

    .card {
        margin: 3rem 0;
    }

    .story-bg {
        width: 85%;
    }
}

@media(max-width: 1000px){
    .nav-list {
        flex-direction: column;
    }

    .nav-link {
        flex-grow: 1;
    }

    .header-text {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        z-index: 10;
    }

    .heading {
        font-size: 6rem;
    }

    .header-paragraph {
        font-size: 2.5rem;
    }

    .popular-tours-heading {
        font-size: 6rem;
    }

    .story-bg {
        transform: skewX(0);
    }

    .story {
        transform: skewX(0);
        flex-direction: column;
        align-items: center;
    }

    .story-image {
        margin-bottom: 3rem;
    }

    .footer-link {
        padding: .3rem 2rem;
        margin: 0 1rem;
    }
}

@media(max-width: 800px){
    .heading-paragraph {
        display: none;
    }

    .popular-tours-heading {
        font-size: 5rem;
    }

    .contact-form {
        width: 90%;
    }

    .footer-list {
        flex-direction: column;
        align-items: center;
    }

    .footer-link {
        margin: 1rem 0;
    }
}

@media(max-width: 650px) {
    .container {
        margin: 0;
    }

    .open-navbar-icon {
        top: 2.5rem;
        left: 2.5rem;
    }

    .navbar-wrapper {
        padding: 0;
    }

    .close-navbar-icon {
        right: 4rem;
    }

    .header {
        height: 100vh;
    }

    .contact-heading {
        font-size: 6rem;
    }

    .contact-form {
        padding: 2rem;
        height: 40rem;
    }
}

@media(max-width: 500px) {
    html {
        font-size: 45%;
    }
}
/*End media queries*/