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

:root {
    --ff-prim: 'Source Sans Pro', sans-serif;
    --ff-sec: 'Source Code Pro', monospace;

    --fw-reg: 300;
    --fw-bold: 900;

    --clr-light: #fff;
    --clr-dark: #303030;
    --clr-accent: #d3d3d3;

    --fs-h1: 4.5rem;
    --fs-h2: 3.75rem;
    --fs-h3: 1.25rem;
    --fs-body: 1.125rem;

    --bs: 0.25em 0.25em 0.75em rgba(0, 0, 0, 0.25), 0.125em 0.125em 0.25em rgba(0, 0, 0, 0.15);
}

@media (max-width: 800px) {
    :root {
        --fs-h1: 3rem;
        --fs-h2: 2.25rem;
        --fs-h3: 1.25rem;
        --fs-body: 1rem;
    }
}

body {
    background-color: var(--clr-light);
    color: var(--clr-dark);
    font-family: var(--ff-prim);
    font-size: var(--fs-body);
    line-height: 1.6;
    margin: 0;
}

section {
    padding: 5em 2em;
}

img {
    display:block;
    max-width: 100%;
}

strong {
    font-weight: var(--fw-bold);
}

.overlay {
    height: 100vh;
} 

.center_ver_hor {
    margin: 0;
    position: absolute;
    top: 40%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%)
}

@media (max-width: 900px) {
    .center_ver_hor {
        position: relative;
        transform: none;
        top: auto;
        left: auto;
        margin-right: auto;
    }
}

/*--------------------------------------------------------------
# Typography
--------------------------------------------------------------*/

h1 {
    font-size:  var(--fs-h1);
    font-family: var(--ff-prim);
    text-align: center;
    line-height: 1.1;
}

h2 {
    font-size:  var(--fs-h2);
    font-family: var(--ff-prim);
    text-align: center;
    line-height: 0.8;
    margin: 0;
}

h3 {
    font-size:  var(--fs-h3);
    font-family: var(--ff-prim);
    line-height: 1.1;
    margin: 0;
}

a {
  text-decoration: none;
}

.sec_title {
    margin-bottom: 0.2em;
}

.sec_title--intro {
    font-weight: var(--fw-reg);
}

.sec_title--intro strong {
    display: block;
}

@media (max-width: 600px) {
    .sec_title--intro strong {
        display: inline-flex;

    }
}

.sec_subtitle {
    margin: 0;
    font-size: var(--fs-h3);
}

nav {
    display: none;
}

.img_fill {
    background-repeat: no-repeat;
    background-attachment: local;
    background-size: cover;
    background-position: center center;
    margin-top: 100px;
}

@media (max-width: 380px) {
    .img_fill--pc {
        margin-top: 300px;
    }
}

@media (min-width: 370px) {
    @media (max-width: 900px ) {
        .img_fill--pc {
            display: none;
        }
    }
}

/*--------------------------------------------------------------
# Header
--------------------------------------------------------------*/

#header {
    transition: all 0.5s;
    z-index: 997;
    padding: 20px 0;
}

#header .logo {
    font-size: 28px;
    margin: 0;
    padding: 0;
    font-weight: 600;
    letter-spacing: 1px;
}

#header .logo a {
    color: var(--clr-dark);
}

#header.header-scrolled {
    background: var(--clr-light);
    padding: 12px 0;
}

/*--------------------------------------------------------------
# Navbar
--------------------------------------------------------------*/
/**
* Desktop Navigation 
*/
.navbar {
    padding: 0;
}
    
.navbar ul {
    margin: 0;
    padding: 0;
    display: flex;
    list-style: none;
    align-items: center;
}

.navbar li {
    position: relative;
}

.navbar>ul>li {
    white-space: nowrap;
    padding: 10px 0 10px 30px;
}

.navbar a,
.navbar a:focus {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--clr-dark);
    font-size: 16px;
    font-weight: 600;
    padding: 0;
    white-space: nowrap;
    transition: 0.3s;
    letter-spacing: 0.4px;
    position: relative;
    text-transform: uppercase;
}

.navbar a i,
.navbar a:focus i {
    font-size: 12px;
    line-height: 0;
    margin-left: 5px;
}

.navbar>ul>li>a:before {
    content: "";
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -6px;
    left: 0;
    width: 0;
    background-color: var(--clr-accent);
    visibility: hidden;
    transition: all 0.3s ease-in-out 0s;
}

.navbar a:hover:before,
.navbar li:hover>a:before,
.navbar .active:before {
    visibility: visible;
    width: 80%;
}

.navbar a:hover,
.navbar .active,
.navbar .active:focus,
.navbar li:hover>a {
    color: var(--clr-dark);
}

.navbar .dropdown ul {
    display: block;
    position: absolute;
    left: 30px;
    top: calc(100% + 30px);
    margin: 0;
    padding: 10px 0;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    background: var(--clr-dark);
    box-shadow: 0px 0px 30px rgba(127, 137, 161, 0.25);
    transition: 0.3s;
}

.navbar .dropdown ul li {
    min-width: 200px;
}

.navbar .dropdown ul a {
    padding: 10px 20px;
    font-size: 14px;
    text-transform: none;
    color: var(--clr-light);
}

.navbar .dropdown ul a i {
    font-size: 12px;
}

.navbar .dropdown ul a:hover,
.navbar .dropdown ul .active:hover,
.navbar .dropdown ul li:hover>a {
    color: var(--clr-accent);
}

.navbar .dropdown:hover>ul {
    opacity: 1;
    top: 100%;
    visibility: visible;
}

.navbar .dropdown .dropdown ul {
    top: 0;
    left: calc(100% - 30px);
    visibility: hidden;
}

.navbar .dropdown .dropdown:hover>ul {
    opacity: 1;
    top: 0;
    left: 100%;
    visibility: visible;
}

@media (max-width: 1366px) {
    .navbar .dropdown .dropdown ul {
      left: -90%;
    }

    .navbar .dropdown .dropdown:hover>ul {
      left: -100%;
    }
}
    
/**
* Mobile Navigation 
*/
.mobile-nav-toggle {
    color: var(--clr-dark);
    font-size: 28px;
    cursor: pointer;
    display: none;
    line-height: 0;
    transition: 0.5s;
}

@media (max-width: 991px) {
    .mobile-nav-toggle {
      display: block;
    }

    .navbar ul {
      display: none;
    }
}

.navbar-mobile {
    position: fixed;
    overflow: hidden;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    background: var(--clr-light);
    transition: 0.3s;
    z-index: 999;
}

.navbar-mobile .mobile-nav-toggle {
    position: absolute;
    top: 15px;
    right: 15px;
}

.navbar-mobile ul {
    display: block;
    position: absolute;
    top: 55px;
    right: 15px;
    bottom: 15px;
    left: 15px;
    padding: 10px 0;
    background-color: var(--clr-light);
    overflow-y: auto;
    transition: 0.3s;
}

.navbar-mobile>ul>li {
    padding: 0;
}

.navbar-mobile a:hover:before,
.navbar-mobile li:hover>a:before,
.navbar-mobile .active:before {
    visibility: hidden;
}

.navbar-mobile a,
.navbar-mobile a:focus {
    padding: 10px 20px;
    font-size: 15px;
    color: var(--clr-dark);
}

.navbar-mobile a:hover,
.navbar-mobile .active,
.navbar-mobile li:hover>a {
    color: var(--clr-accent);
}

.navbar-mobile .getstarted,
.navbar-mobile .getstarted:focus {
    margin: 15px;
}

.navbar-mobile .dropdown ul {
    position: static;
    display: none;
    margin: 10px 20px;
    padding: 10px 0;
    z-index: 99;
    opacity: 1;
    visibility: visible;
    background: var(--clr-light);
    box-shadow: 0px 0px 30px var(--clr-dark);
}

.navbar-mobile .dropdown ul li {
    min-width: 200px;
}

.navbar-mobile .dropdown ul a {
    padding: 10px 20px;
}

.navbar-mobile .dropdown ul a i {
    font-size: 12px;
}

.navbar-mobile .dropdown ul a:hover,
.navbar-mobile .dropdown ul .active:hover,
.navbar-mobile .dropdown ul li:hover>a {
    color: var(--clr-accent);
}

.navbar-mobile .dropdown>.dropdown-active {
    display: block;
}

/*--------------------------------------------------------------
# Hero
--------------------------------------------------------------*/

.intro {
    position: relative;
}

.intro_img {
    margin-top: 50px;
    box-shadow: var(--bs);
    object-fit:cover;
    border-radius:50%;
}

.sec_subtitle--intro {
    display: inline-block;
}

@media (min-width: 600px) {
    .intro {
        display: grid;
        width: min-content;
        margin: 0 auto;
        grid-column-gap: 1em;
        grid-template-areas: "img title" "img subtitle";
        grid-template-columns: min-content max-content;
    }

    .intro_img {
        grid-area: img;
        min-width: 250px;
        position: relative;
        z-index: 2;
    }

    .sec_subtitle--intro {
        align-self: start;
        grid-column: -1 / 1;
        grid-row: 2;
        text-align: right;
        position: relative;
        left: -1.5em;
        width: calc(100% + 1.5em);
    }
}

/*--------------------------------------------------------------
# Swiper
--------------------------------------------------------------*/
#services {
    background: var(--clr-light);
    position: relative;
    padding-top: 20px;
    padding-bottom: 20px;
}
  
.services-block span {
    margin: 10px 0;
    position: relative;
    font-size: 15px;
    color: var(--clr-dark);
    letter-spacing: 0.1em;
    font-weight: 500;
    text-transform: uppercase;
    display: block;
    font-family: var(--ff-sec);
}
  
.services-block .separator {
    margin: 0;
    font-size: 13px;
    line-height: 22px;
}
  
.services-block i {
    font-size: 44px;
    color: var(--clr-accent);
    line-height: 44px;
}
  
.services-slider .swiper-pagination {
    margin-top: 50px;
    margin-bottom: 50px;
    position: relative;
}
  
.services-slider .swiper-pagination .swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background-color: var(--clr-light);
    opacity: 1;
    border: 1px solid var(--clr-accent);
}
  
.services-slider .swiper-pagination .swiper-pagination-bullet-active {
    background-color: var(--clr-accent);
}

/*--------------------------------------------------------------
# About
--------------------------------------------------------------*/

.about {
    margin-top: 4em;
    margin-bottom: 4em;
    margin-left: auto;
    margin-right: auto;
    max-width: 1000px;
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 1em;
    row-gap: 1em;
    text-align: center;
    align-content: space-evenly;
}

.about_img {
  max-height: 80vh;
}

@media (max-width: 900px) {
    .about_img {
        height: max-content;
        margin-left: auto;
        margin-right: auto;
    }
}

.h1-aboutme {
    position: relative;
}

.h1-aboutme_phone {
    position: relative;
}

.about-p {
    font-size: 12;
    text-align: justify;
    max-width: 500px;
    margin-top: 3em;
    display: block;
    max-width: 100%;
    margin-left: -3em;
}

.section__title--about::after {
    content: '';
    display: block;
    width: 2em;
    height: 1px;
    margin: 0.5em auto 1em;
    background: var(--clr-light);
    opacity: 0.25;
}

@media (min-width: 900px) {
    .h1-aboutme_phone {
        display: none;
    }
}

@media (max-width: 900px) {
    .about {
        text-align: center;
        display: block;
    }

    .about_img {
        width: max-content;
        max-height: 100vh;
        max-width: 80%;
        margin-bottom: 5em;
        margin-top: 5em;
    }

    @media (max-width: 600px) {
        .about_img {
            margin-top: 25em;
        }
        @media (max-width: 500px) {
            .about_img {
                margin-top: 15em;
            }
        }
    }

    .h1-aboutme {
        display: none;
    }
}

.about_text {
    text-align: center;
    margin-left: 5em;
}

/*--------------------------------------------------------------
# Opensource
--------------------------------------------------------------*/

.opensource {
    position: relative;
    padding: 1rem;
    max-width: 1000px;
    margin: 0 auto;
}


@media (max-width: 900px) {
    .opensource {
        margin-top: 18em;
    }
    @media (max-width: 800px) {
        .opensource {
            margin-top: 20m;
        }
        @media (max-width: 600px) {
            .opensource {
                margin-top: 23em;
            }
            @media (max-width: 500px) {
                .opensource {
                    margin-top: 25em;
                }
                @media (max-width: 400px) {
                    .opensource {
                        margin-top: 28em;
                    }
                }
            }
        }   
    }    
}

.h1-opensource {
  text-align: center;
  font-family: var(--ff-prim);
}

.card-grid {
  max-width: 1000px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 1em;
  row-gap: 1em;
}

@media (max-width: 600px) {
    .card-grid {
        display: block;
    }

    .repo-card {
        margin: 1em;
    }
}

/*--------------------------------------------------------------
# My services
--------------------------------------------------------------*/

.my_services {
    padding: 1em;
    max-width: 1000px;
    margin: 0 auto;
    margin-bottom: 40px;
  }
  
  .h1_services {
    margin-bottom: 30px;
  }
  
  .service {
      max-width: 1200px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      column-gap: 1em;
      row-gap: 1em;
      text-align: center;
      margin-top: 40px;
      align-items: center;
  }
  
  .service_img {
    max-width: 500px;
    box-shadow: 2px 2px 5px;
    max-height: 300px;
    object-fit: contain;
  }
  
  .service_text {
    margin-top: 30px;
  }
  
  .text_block {
    margin-top: 1em;
  }


@media (max-width: 900px) {
    .service {
        grid-template-columns: 2fr;
    }

    .service_img--reversed {
      order: 1;
    }

    .service_img {
        width: 80%;
        margin-left: 2em;
    }
}

/*--------------------------------------------------------------
# Footer
--------------------------------------------------------------*/

.footer {
    background: var(--clr-dark);
    color: var(--clr-accent);
    text-align: center;
    padding: 2.5em 0;
    font-size: var(--fs-h3);
    margin-top: 5em;
}

.footer a { 
    color: inherit;
    text-decoration: none;
}

.footer__link {
    font-weight: var(--fw-bold);
}

.footer__link:hover,
.social-list__link:hover {
    opacity: .7;
}

.footer__link:hover {
    text-decoration: underline;
}

.social-list {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 2em 0 0;
    padding: 0;
}

.social-list__item {
    margin: 0 .5em;
}

.social-list__link {
    padding: .5em;
}