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

:root {
  --fs-h1: 3rem;
  --fs-h2: 2.25rem;
  --fs-h3: 1.25rem;
  --fs-body: 1rem;
}
@media (min-width: 800px) {
  :root {
    --fs-h1: 4.5rem;
    --fs-h2: 3.75rem;
    --fs-h3: 1.5rem;
    --fs-body: 1.125rem;
  }
}

/* general style */
html {
  scroll-behavior: smooth;
}

body {
  background: light;
  color: dark;
  margin: 0;
  font-family: sans-serif;
  font-size: 1rem;
  line-height: 1.6;
}

section {
  padding: 5em 2em;
}

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

strong {
  font-weight: 900;
}

:focus {
  outline: 3px solid #16e0bd;
  outline-offset: 3px;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.5em 2.5em;
  background: #16e0bd;
  color: #111;
  text-decoration: none;
  cursor: pointer;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: bold;
  transition: transform 200ms ease-in-out;
}

.btn:hover {
  transform: scale(1.1);
}

/* Typography */

h1,
h2,
h3 {
  line-height: 1;
  margin: 0;
}

h1 {
  font-size: 3rem;
}
h2 {
  font-size: 2.25rem;
}
h3 {
  font-size: 1.25rem;
}

.section__title {
  margin-bottom: 0.25rem;
}
.section__title--intro {
  font-weight: 300;
}
.section__title--intro strong {
  display: block;
}

.section__subtitle {
  margin: 0;
  font-size: 1.25rem;
}
.section__subtitle--intro,
.section__subtitle--about {
  background: #16e0bd;
  padding: 0.25em 1em;
  font-family: monospace;
  margin-bottom: 1em;
  width: 100%;
}

.section__subtitle--work {
  color: #16e0bd;
  font-weight: bold;
  margin-bottom: 2em;
}

/* header */

header {
  display: flex;
  justify-content: space-between;
  padding: 1em;
  background: rgba(175, 175, 177, 0.151);
}

.logo {
  max-width: 50px;
}

.nav {
  position: fixed;
  background: #111;
  color: rgb(255, 255, 255);
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;

  transform: translateX(100%);
  transition: transform 250ms cubic-bezier(0.5, 0, 0.5, 1);
}

.nav__list {
  list-style: none;
  display: flex;
  height: 100%;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav__link {
  color: inherit;
  font-weight: bold;
  font-size: var(--fs-h2);
  text-decoration: none;
}

.nav__link:hover {
  color: #16e0bd;
}

.nav-toggle {
  padding: 0.5em;
  background: transparent;
  border: 0;
  cursor: pointer;
  position: absolute;
  right: 1em;
  top: 1em;
  z-index: 1000;
}

.nav-open .nav {
  transform: translateX(0);
}

.nav-open .nav-toggle {
  position: fixed;
}

.nav-open .hamburger {
  transform: rotate(0.625turn);
}

.nav-open .hamburger::before {
  transform: rotate(90deg) translateX(-6px);
}

.nav-open .hamburger::after {
  opacity: 0;
}

.hamburger {
  display: block;
  position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  background: #16e0bd;
  width: 2em;
  height: 3px;
  border-radius: 1em;
  transition: transform 250ms ease-in-out;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
}

.hamburger::before {
  top: 6px;
}
.hamburger::after {
  bottom: 6px;
}

/*  Intro section  */

.intro {
  position: relative;
}

.intro__img {
  box-shadow: 0.25em 0.25em 0.75em rgba(0, 0, 0, 0.25),
    0.125em 0.125em 0.25em rgba(0, 0, 0, 0.15);
}

.section__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;
  }

  .section__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);
  }
}

/*  My services section  */

.my-services {
  background: rgba(49, 46, 46, 0.8);
  background-image: url(./assets/services_bg.jpeg);
  background-size: cover;
  /* background-blend-mode: multiply; */
  color: rgb(0, 0, 0);
  text-align: center;
}

.section__title--services {
  color: #07b396;
  position: relative;
}

.section__title--services::after {
  content: "";
  display: block;
  width: 2em;
  height: 1px;
  margin: 0.5em auto 1em;
  background: light;
  opacity: 0.25;
}

.services {
  margin-bottom: 4em;
}

.service {
  max-width: 500px;
  margin: 0 auto;
}

.service strong {
  background-image: linear-gradient(90deg, rgb(219, 11, 11), blue);
  background-size: 0% 3px;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 300ms ease;
}

.service strong:hover {
  background-size: 100% 3px;
}

@media (min-width: 800px) {
  .services {
    display: flex;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
  }

  .service + .service {
    margin-left: 2em;
  }
}

.about-me {
  max-width: 1000px;
  margin: 0 auto;
}

.about-me__img {
  box-shadow: 0.25em 0.25em 0.75em rgba(0, 0, 0, 0.25),
    0.125em 0.125em 0.25em rgba(0, 0, 0, 0.15);
}

.about-me__body strong {
  background-image: linear-gradient(90deg, rgb(219, 11, 11), blue);
  background-size: 0% 3px;
  background-repeat: no-repeat;
  background-position: left bottom;
  transition: background-size 300ms ease;
}

.about-me__body strong:hover {
  background-size: 100% 3px;
}

@media (min-width: 600px) {
  .about-me {
    display: grid;
    grid-template-columns: 1fr 200px;
    grid-template-areas:
      "title img"
      "subtitle img"
      "text img";
    grid-column-gap: 2em;
  }

  .section__title--about {
    grid-area: title;
  }

  .section__subtitle--about {
    grid-column: 1 / -1;
    grid-row: 2;
    position: relative;
    left: -1em;
    width: calc(100% + 2em);
    padding-left: 1em;
    padding-right: calc(200px + 4em);
  }

  .about-me__img {
    grid-area: img;
    position: relative;
    z-index: 2;
  }
}

/* My Work */

.my-work {
  color: rgb(0, 0, 0);
  text-align: center;
}

.portfolio {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.portfolio__item {
  background: #111;
  overflow: hidden;
}

.portfolio__img {
  transition: transform 750ms cubic-bezier(0.5, 0, 0.5, 1), opacity 250ms linear;
}

.portfolio__item:focus {
  position: relative;
  z-index: 2;
}

.portfolio__img:hover,
.portfolio__item:focus .portfolio__img {
  transform: scale(1.2);
  opacity: 0.5;
}

/* footer */

.footer {
  background: rgb(0, 0, 0);
  color: #ffffff;
  text-align: center;
  padding: 1em 0;
  font-size: var(--fs-h3);
}

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

.footer__link {
  font-weight: initial;
}

.footer__link:hover,
.social-list__link:hover {
  opacity: 0.7;
}

.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 0.5em;
}

.social-list__link {
  padding: 0.5em;
}