/* General 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;
    --lightgrey-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 General Styles */


/* Navbar Styles */
.navbar-icon {
    height:5.5rem;
    width:5.5rem;
    background-color: var(--white-color);
    cursor: pointer;
    border-radius: 50%;
    flex-direction: column;
}
.open-navbar-icon {
    position: fixed;
    top:6.5rem;
    left:6.5rem;
    z-index: 350;
}
.change .open-navbar-icon {
    z-index:300;
}
.navbar-icon .line {
    height:.2rem;
    width:3.5rem;
    background-color: var(--lightgrey-color);
}
.open-navbar-icon .line {
    margin:.3rem 0;
}
.navbar-wrapper {
    width:100vw;
    /* height:100vh; */
    background-color: rgba(255,255,255,0.7);
    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;
    z-index: 300;
    height:100vh;
    transition: bottom .5s, opacity .2s .25s;
}
.navbar {
    width:100%;
    height: 100%;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.3)), 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: 0.8;
    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 Navbar Styles */


/* Header Styles */
.header {
    width:100%;
    height:calc(100vh - 7rem);
    background: linear-gradient(rgba(18,113,255,.5), rgba(18,113,255,0.3)), 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: 0.1rem;
    text-shadow: 0 0.3rem 0.5rem 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:0.5rem;
    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;
}

@keyframes drop-letters {
    0% {
        transform: translateY(0);
    }
    10% {
        transform: translateY(0);
    }
    15% {
        transform: translateY(-100%);
    }
    20% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(0);
    }
}
.header-image {
    width:35%;
    animation: image-float 150s infinite;
}

@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;
    }
}
/* End Header Styles */

/* Popular Tours Styles */

.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;
    opacity: .9;
    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(--lightgrey-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: 300;
    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(--lightgrey-color);
    border-radius: .3rem;
    border: none;
    font-size: 1.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .2rem;
    cursor: pointer;
}

/* End Popular Tour Styles */

/* Stories */
.stories {
    padding: 10rem 0;
    position: relative;
}
.video-container {
  position: absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  opacity: .4;
}
.bg-video {
    width:100%;
    height:100%;
    object-fit: cover;
}
.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(--lightgrey-color);
}
.story-paragraph::first-letter {
    margin-left: 1rem;
}
/* End Story Style */
/* Contact */
.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 25s 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:60rem;
    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(--lightgrey-color);
    letter-spacing: .1rem;
    border-radius: .5rem;
    transition: border .3s;
}
.input-group input:focus,
.input-group textarea:focus {
    border:.1rem solid #ccc;

}
.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(--lightgrey-color);
    color:var(--white-color);
    border-radius: .5rem;
    border: none;
    cursor:pointer;
    transition: backgorund-color .4s;
}
.form-btn:hover {
    background-color: var(--grey-color);
}
.input-group textarea {
    max-height: 15rem;
    max-width: 100%;
}

@keyframes contact-bg {
    0%{
        background-color: #3d3d3d;
    }
    25% {
        background-color: #ced8e4;
    }
    50%{
        background-color:#1e81f3 ;
    }
    75%{
        background-color:#ff7842 ;
    }
    100% {
        background-color: #3d3d3d;
    }
    
}
/* End of Contact */
/* Footer Styles */
.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 Footer Styles */

@media screen and (max-width:1200px) {
    .cards-wrapper {
        flex-direction: column;
        align-items: center;
    }
    .card  {
        margin:3rem 0;
    }
    .story-bg {
        width:85%;
    }
}
@media screen and (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 screen and (max-width:800px) {
    .header-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 screen and (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 screen and (max-width:500px) {
    html {
        font-size: 45%;
    }
}