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

/* Custom Props */

:root {
  --ff-primary: "Source Sans Pro", sans-serif;
  --ff-secondary: "Source Code Pro", monospace;

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

  --clr-light: #fff;
  --clr-dark: #303030;
  --clr-accent: #4d9de0;

  --fs-h1: 3rem;
  --fs-h2: 2.25rem;
  --fs-h3: 1.25rem;
  --fs-body: 1rem;

  --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 (min-width: 800px) {
  :root {
    --fs-h1: 4.5rem;
    --fs-h2: 3.75rem;
    --fs-h3: 1.5rem;
    --fs-body: 1.125rem;
  }
}

/* General Styles */

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

section {
  padding: 5em;
}

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

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

:focus {
  outline: 3px solid var(--clr-accent);
  outline-offset: 3px;
}

/* Buttons */

.btn {
  display: inline-block;
  padding: 0.5em 2.5em;
  background: var(--clr-accent);
  color: var(--clr-dark);
  text-decoration: none;
  cursor: pointer;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: var(--fw-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: var(--fs-h1);
}
h2 {
  font-size: var(--fs-h2);
}
h3 {
  font-size: var(--fs-h3);
}

.section__title {
  margin-bottom: 0.25em;
}

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

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

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

.section__subtitle--intro,
.section__subtitle--about {
  padding: 0.25em 1em;
  background: var(--clr-accent);
  font-family: var(--ff-secondary);
  margin-bottom: 1em;
}

/* Header */

header {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  padding: 0.5em;
  background: var(--clr-dark);
  opacity: 0.95;
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
  color: var(--clr-accent);
}

.logo {
  font-size: var(--fs-h2);
  padding-left: 0.5em;
  padding-right: 0.5em;
}

.nav__item {
  float: left;
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
  color: var(--clr-accent);
}

.nav__item a {
  display: block;
  text-align: center;
  padding-left: 1.5em;
  padding-right: 1.5em;
  color: inherit;
  text-decoration: none;
  text-transform: uppercase;
}

.nav__list {
  list-style-type: none;
  display: inline;
}

.nav__item:hover {
  opacity: 0.7;
}

.nav-button-toggle {
  display: none;
}

/*
@media (max-width: 900px) {
  .nav__list {
    position: fixed;
    display: flex;
    flex-direction: column;
    padding: 10rem 2em;
    inset: 0 0 0 30%;
  }

  .nav-button-toggle {
    display: block;
  }
}
*/

/* Intro Section Layout */

.intro {
  position: relative;
}

.intro__img {
  box-shadow: var(--bs);
}

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

@media (min-width: 600px) {
  .intro {
    display: grid;
    grid-column-gap: 1em;
    width: min-content;
    margin: 0 auto;
    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 Layout */

.my-services {
  background: var(--clr-dark);
  background-image: url(../img/hb_whale_1.png);
  background-size: cover;
  background-blend-mode: multiply;
  color: var(--clr-light);
  text-align: center;
}

.section__title--services {
  color: var(--clr-accent);
  position: relative;
}

.section__title--services::after {
  content: "";
  display: block;
  width: 3em;
  height: 1px;
  margin: 0.5em auto 1em;
  background: currentColor;
  opacity: 0.25;
}

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

.services {
  margin-bottom: 4em;
}

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

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

/* About Me Section Layout */

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

.about-me__img {
  box-shadow: var(--bs);
}

@media (min-width: 600px) {
  .about-me {
    display: grid;
    grid-template-columns: 1fr 250px;
    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 / 2;
    grid-row: 2;
    position: relative;
    width: 100%;
    padding-left: 1em;
    padding-right: 7em;
  }

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

/* Portfilio Section Layout */

.my-work {
  background: var(--clr-dark);
  color: var(--clr-light);
  text-align: center;
}

.my-work + .my-work {
  padding-top: 1px;
}

.my-work::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin: 0.5em auto 1em;
  background: var(--clr-accent);
  opacity: 0.15;
}

.section__subtitle--work {
  color: var(--clr-accent);
  font-weight: var(--fw-bold);
  margin-bottom: 1em;
}

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

.portfolio__item {
  background: var(--clr-dark);
  overflow: hidden;
}

.portfolio__img {
  transition: transform 750ms cubic-bezier(0.5, 0, 0.5, 1), opacity 250ms linear;
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  opacity: .7;
}

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

.portfolio__img:hover,
.portfolio__item:focus .portfolio__img {
  transform: scale(1.2);
  opacity: 0.75;
}

/* Footer Section Layout */

.footer {
  background: #111;
  color: var(--clr-accent);
  text-align: center;
  padding: 2.5em 0;
}

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

.footer__link {
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
}

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

.social-list__items {
  margin: 0 0.5em;
}

.social-list__link {
  padding: 2em;
}

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

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

/* Portfilio Page Layout */

.portfolio-page {
  background: var(--clr-dark);
  background-size: cover;
  color: var(--clr-light);
  text-align: center;
}

.section__title--portfolio {
  color: var(--clr-accent);
  text-align: center;
  position: relative;
}

.section__title--portfolio::after {
  content: "";
  display: block;
  width: 3em;
  height: 1px;
  margin: 0.5em auto 1em;
  background: currentColor;
  opacity: 0.5;
}

.portfolio-page-body {
  display: flex;
  flex-direction: column;
}

.portfolio-page-body-link {
  color: var(--clr-accent);
  text-decoration: none;
}

.portfolio-page-body-link:hover {
  opacity: 0.7;
}