:root{
    --primary-color : #333;
    --secondary-color : #444;
    --overlay-color: rgba(0,0,0,0.7);
}
*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body{
    font-family: sans-serif;
    line-height: 1.6;
    color: #333;
    font-size: 1.1rem;
}
h1,h2,h3,h4{
    line-height: 1.3;
}
a{
    color: var(--secondary-color);
    text-decoration: none;
}
ul{
    list-style: none;
}
img{
    width:100%;
}
.container{
    max-width: 1100px;
    margin: auto;
    overflow: hidden;
    padding: 0 2rem;
}
.navbar{
    font-size: 1.2rem;
    padding-top: 0.3rem;
    padding-bottom: 0.3rem;
}
.navbar .container{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
}
.navbar .logo{
    font-size: 2rem;
}
.navbar .nav{
    display: flex;
    align-items: center;
    justify-content: center;
    justify-self: flex-end;
}
.navbar .nav a{
    padding: 0 1rem;
}
.navbar .nav a:hover{
    color:#555;
}
.section-a{
    margin:2rem 0;
}
.section-a .container{
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-gap: 3rem;
    align-items: center;
    justify-content: center;
}
.section-a h1{
    font-size: 4rem;
    color:var(--primary-color)
}
.section-a p{
    margin:1rem 0;
}
/*popup window*/
.container#blur.active{
    filter: blur(20px);
    pointer-events: none;
    user-select: none;
}
#popup{
    position: fixed;
    top:45%;
    left:55%;
    transform: translate(-50%,-50%);
    width:600px;
    padding:50px;
    box-shadow: 0 5px 30px rgba(0,0,0,.30);
    background: #fff; 
    visibility: hidden;
    opacity: 0;
    transition: 0.5s;
}
#popup.active{
    top:50%;
    visibility: visible;
    opacity: 1;
    transition: 0.5s;
}
/*Section-B*/
.section-b{
    position: relative;
    background: url(../images/section-b.jpg) no-repeat bottom center/cover;
    height: 600px;
}
.section-b-inner{
    color:#fff;
    height:100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin:auto;
    max-width: 860px;
    padding:5rem 0;
}
.section-b-inner h2{
    font-size: 5rem;
    margin-top: 1rem;
}
.section-b-inner h3{
    font-size: 2rem;
}
.section-b-inner p{
    font-size: 1.5rem;
    margin-top: 1rem;
}
/*Section C*/
.section-c .gallery{
    display: grid;
    grid-template-columns: repeat(5, 1fr);
}
.section-c .gallery a:first-child{
    grid-row: 1/3;
}
.section-c .gallery a:nth-child(12){
    grid-column: 3/5;
}
.section-c .gallery img, .section-c .gallery a{
    width: 100%;
    height: 100%;
}
/*Utilities*/
.btn{
    display: inline-block;
    background: var(--primary-color);
    color:#fff;
    padding:0.8rem 1.5rem;
    border:none;
    cursor: pointer;
    font-size: 1.1rem;
    border-radius: 30px;
}
.btn:hover{
    background: var(--secondary-color);
}
.overlay{
    position: absolute;
    top:0;
    left:0;
    height: 100%;
    width:100%;
    background-color:var(--overlay-color)
}
/*footer*/
.section-footer{
    background: var(--primary-color);
    color:#fff;
    padding:4rem 0;
}
.section-footer .container{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 1rem;
}
.section-footer h2{
    font-size: 2rem;
    margin-bottom: 1rem;
}
.section-footer h4{
    margin-bottom: 0.7rem;
}
.section-footer a{
    line-height: 1.9;
    color:#ccc;
}
.section-footer a>i{
    color:#555;
    margin-right: 0.5rem;
}
.email-form{
    width:100%;
    display: inline-block;
    background-color: #555;
    position: relative;
    border-radius: 20px;
    line-height: 0;
    margin-top: 1rem;
}
.email-form .form-control{
    display: inline-block;
    border:0;
    outline: 0;
    font-size: 1rem;
    color:#ddd;
    background-color: transparent;
    font-family: inherit;
    margin: 0;
    padding:0 3rem 0 1.5rem;
    width:100%;
    height: 45px;
    border-radius: 20px;
}
.email-form .submit{
    display: inline-block;
    position: absolute;
    top:0;
    right:0;
    width:45px;
    height: 45px;
    background-color: #eee;
    font-size: 1rem;
    text-align: center;
    margin: 0;
    padding: 0;
    outline: 0;
    border:0;
    color:#333;
    cursor: pointer;
    border-radius: 0 20px 20px 0;
}
@media (max-width: 700px) {
    .section-a .container {
      grid-template-columns: 1fr;
      text-align: center;
    }
  
    .section-a .container div:first-child {
      order: 2;
    }
  
    .section-a .container div:nth-child(2) {
      order: -1;
    }
  
    .section-a img {
      width: 80%;
      margin: auto;
    }
  
    .section-c .gallery {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
    }
    .section-c .gallery a:first-child {
      grid-row: 1/1;
      grid-column: 1/1;
    }
  
    .section-c .gallery a:nth-child(2) {
      grid-column: 2/4;
      grid-row: 2/2;
    }
  
    .section-c .gallery a:last-child {
      display: none;
    }
  
    .section-footer {
      padding: 1rem 0;
    }
    .section-footer .container {
      display: block;
      text-align: center;
    }
    #popup{
        width: 300px;
    }
    .section-b-inner h2{
        font-size: 2rem;
        margin-top: 0.3rem;
    }
    .section-b-inner h3{
        font-size: 1rem;
    }
    .section-b-inner p{
        font-size: 1.2rem;
        margin-top: 1rem;
    }
    .navbar{
        font-size: 1rem;
    }
    .navbar .logo{
        font-size: 1.5rem;
    }
}