*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    
}
:root{
    --bg-color: rgb(31, 36, 45);
    --second-bg-color: #323946;
    --text-color: #fff;
    --main-color: rgb(255, 221, 0);
}

html{
    font-size: 62.5%;
    overflow-x: hidden;
}

body{
    background: var(--bg-color);
    color: var(--text-color);
}

section{
    min-height: 100vh;
    padding: 10rem 9% 2rem;
}

.header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 9%;
    background: var(--bg-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}


.header.sticky{
    border-bottom: .1rem solid rgba(0, 0, 0, -2);
}


.logo{
    font-size: 2.5rem;
    color: var(--text-color);
    font-weight: 600;
    cursor: default;
}

.navbar a{
    font-size: 1.7rem;
    color: var(--text-color);
    margin-left: 4rem;
    transition: .3s;
}
.navbar a:hover,
.navbar a.active {
    color: var(--main-color);

}

#menu-icon{
    font-size: 3.6rem;
    color: var(--text-color);
    display: none;
}

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

.home-img img{
    width: 30vw;
    margin-left: 50px;
    border-radius: 10%;
    animation: floatImage 4s ease-in-out infinite;
}

@keyframes floatImage{
    50%{
        transform: translateY(-2.4rem);
    }
    100% {
        transform: translateY(0);
    }
}


.home-content h3{
    font-size: 3.2rem;
    font-weight: 700;
}

.home-content h3:nth-of-type(2){
    margin-bottom: 2rem;
}

span{
    color: var(--main-color);
}



.home-content h1{
    font-size: 5.6rem;
    font-weight: 700;
    line-height: 1.3;
}

.home-content p{
    font-size: 1.7rem;
}

.social-media a{
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4rem;
    height: 4rem;
    background: transparent;
    border: .2rem solid var(--main-color);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--main-color);
    margin: 3rem 1.5rem 3rem 0;
    transition: .5s ease;
}

.social-media a:hover{
    background: var(--main-color);
    color: var(--second-bg-color);
    box-shadow: 0 0 1rem var(--main-color);
}

.btn{
    display: inline-block;
    padding: 1rem 2.8rem;
    background: var(--main-color);
    border-radius: 4rem;
    box-shadow: 0 0 1rem var(--main-color);
    font-size: 1.6rem;
    color: var(--second-bg-color);
    letter-spacing: .1rem;
    font-weight: 600;
    transition: .5s ease;
}

.btn:hover{
    box-shadow: none;
}

/* about section design*/

.about{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: var(--second-bg-color);
}

.about-img img{
    width: 30vw;
    border-radius: 10%;
}

.heading{
    text-align: center;
    font-size: 4.5rem;
}

.about-content h2{
    text-align: left;
    line-height: 1.2;
}
.about-content h3{
    font-size: 2.6rem;
}

.about-content p{
    font-size: 1.6rem;
    margin: 2rem 0 3rem;
}

/*Services Section design*/

.services h2{
    margin-bottom: 5rem ;
}

.services-container{
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;    
}

.services-container .services-box {
    flex: 1 1 30rem;
    background: var(--second-bg-color);
    padding: 3rem 2rem 4rem;
    border-radius: 2rem;
    text-align: center;
    border: .2rem solid var(--bg-color);
    transform: .5s ease;
}

.services-container .services-box:hover{
    border-color: var(--main-color);
    transform: scale(1.02);
}

.services-box i {
    font-size: 7rem;
    color: var(--main-color);
}

.services-box h3{
    font-size: 2.6rem;
}

.services-box p {
    font-size: 1.6rem;
    margin: 1rem 0 3rem;
}

    /*Portfolio section design*/

.portfolio{
    background: var(--second-bg-color);
}

.portfolio h2{
    margin-bottom: 4rem;
}

.portfolio-container{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    align-items: center;
    gap: 2.5rem;
}

.portfolio-container .portfolio-box {
    position: relative;
    border-radius: 2rem;
    box-shadow: 0 0 1rem var(--bg-color);
    overflow: hidden;
    display: flex;
}

.portfolio-box img{
    width: 100%;
    transform: .5 ease;
}

.portfolio-box:hover img{
    transform: scale(1.1);
}

.portfolio-box .portfolio-layer{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, -1), var(--main-color));
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    padding: 0 4rem;
    transform: translateY(100%);
    transform: .5 ease;
}

.portfolio-box:hover .portfolio-layer{
    transform: translateY(0);

}

.portfolio-layer h4{
    font-size: 3rem;
}

.portfolio-layer p{
    font-size: 1.6rem;
    margin: .3rem 0 1rem;
}

.portfolio-layer a{
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 5rem;
    height: 5rem;
    background: var(--text-color);
    border-radius: 50%;
}

/*Contact form Design */

.contact h2{
    margin-bottom: 3rem;
    
}

.contact form{
    max-width: 70rem;
    margin: 1rem auto;
    text-align: center;
    margin-bottom: 3rem;
    
}

.contact form .input-box{
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.contact form .input-box input,
.contact form textarea{
    width: 100%;
    padding: 1.5rem;
    font-size: 1.6rem;
    color: var(--text-color);
    background: var(--second-bg-color);
    border-radius: .8rem;
    margin: .7rem 0;
}

.contact form .input-box input{
    width: 49%;
}

.contact form textarea{
    resize: none;
}

.contact form .btn{
    margin-top: 2rem;
    cursor: pointer;
    text-align: center;
}

/*footer design*/

.footer{
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 2rem 9%;
    background: var(--second-bg-color);
}

.footer-text{
    font-size: 1.6rem;
}

.footer-iconTop a{
    display: inline-block;
    justify-content: center;
    align-items: center;
    padding: .8rem;
    background: var(--main-color);
    border-radius: .8rem;
    transition: .5s ease;
}

.footer-iconTop a:hover{
    box-shadow: 0 0 1rem var(--main-color);
}

.footer-iconTop a i{
    font-size: 2.4rem;
    color: var(--second-bg-color);
}



/* breakpoints */
@media (max-width: 1200px){
    html{
        font-size: 55%;
    }
}

@media (max-width: 991px){
    .header{
        padding: 2rem 3%;
    }
    section{
        padding: 10rem 3% 2rem;
    }

    .services{
        padding-bottom: 7rem;
    }

    .portfolio{
        padding-bottom: 7rem;
    }

    .contact{
        margin: auto;
    }

    .footer{
        padding: 2rem 3%;
    }
}

@media (max-width: 768px){
    #menu-icon{
        display: block;
    }

    .navbar{
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        padding: 1rem 3%;
        background: var(--bg-color);
        border-top: .1rem solid rgba(0, 0, 0, -2);
        box-shadow: 0 .5rem 1rem rgba(0, 0, 0, -2);
        display: none;
    }

    .navbar.active{
        display: block;
    }

    .navbar a{
        display: block;
        font-size: 2rem;
        margin: 3rem 0;
    }

    .home{
        flex-direction: column;
    }
    .home-content h3{
        font-size: 2.6rem;
    }
    .home-content h1{
        font-size: 5rem;
    }
    .home-img img{
        width: 70vw;
        margin-top: 4rem;
    }

    .about{
        flex-direction: column-reverse;
    }
    .about-img{
        width: 70vw;
        margin-top: 4rem;
    }

    .services h2{
        margin-bottom: 3rem;
    }

    .portfolio h2{
        margin-bottom: 3rem;
    }

    .portfolio-container{
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 617px) {
    .portfolio-container{
        grid-template-columns: 1fr;
    }
}

@media (max-width: 450px) {
    html{
        font-size: 50%;
    }

    .contact form .input-box input {
        width: 100%;
    }
}
@media (max-width: 365px) {
    .home-img img{
        width: 90vw;
    }
    .about-img img{
        width: 90vw;
    }

    .footer{
        flex-direction: column-reverse;
    }

    .footer p{
        text-align: center;
        margin-top: 2rem;
    }
}

/* This code write MD Rakibul Hassan */
body::-webkit-scrollbar {
    width: 12px;               /* width of the entire scrollbar */
  }
  
  body::-webkit-scrollbar-track {
    background: rgb(37, 36, 35);        /* color of the tracking area */
  }
  
  body::-webkit-scrollbar-thumb {
    background-color: rgb(184, 184, 184);    /* color of the scroll thumb */
    border-radius: 20px;                     /* roundness of the scroll thumb */
    border: 3px solid rgb(53, 53, 53);   /* creates padding around scroll thumb */
  }
/* MD code end ----- */