/* CSS Reset */
/* Resetting margins, paddings, and borders */
html, body,
h1, h2, h3, h4, h5, h6,
a, p, span,
em, small, strong,
sub, sup,
mark, del, ins, strike,
abbr, dfn,
blockquote, q, cite,
code, pre,
ol, ul, li, dl, dt, dd,
div, section, article,
main, aside, nav,
header, hgroup, footer,
img, figure, figcaption,
address, time,
audio, video,
canvas, iframe,
details, summary,
fieldset, form, label, legend,
table, caption,
tbody, tfoot, thead,
tr, th, td {
  border: 0;
  margin: 0;
  padding: 0;
}

/* Box sizing */
html {
  box-sizing: border-box;
}

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

/* Sizing - Height */
body {
  min-height: 100vh;
}

/* Typography */
body {
  font-size: 1rem;
  line-height: 1.5;
}

* {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

a,
a:visited {
  color: inherit;
}

/* Resetting specific element styles */
ol,
ul {
  list-style: none;
}

img,
video {
  max-width: 100%;
}

img {
  border-style: none;
}

a {
  text-decoration: none;
}

/* Basic rules */
.page {
  background-color: hsl(0, 0%, 100%);
  color: hsl(212, 27%, 19%);
  font-family: 'Barlow', sans-serif;
  font-weight: 600;
}

.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Page header */
.page-header {
  background-image: url(images/desktop/image-header.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center top;
  color: hsl(0, 0%, 100%);
  min-height: 100vh;
}

.page-header__top {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 30px 40px;
  flex-wrap: wrap;
}

.hamburger-menu {
  display: none;
}

.page-header__nav-item {
  display: inline-block;
}

.page-header__nav-item:not(:last-child) {
  margin-right: 30px;
}

.page-header__nav-item--alternate-design {
  background-color: hsl(0, 0%, 100%);
  border-radius: 30px;
  padding: 10px 22px;
  text-transform: uppercase;
  font-family: 'Fraunces', serif;
  font-size: .85rem;
  font-weight: 700;
}

.page-header__nav-item--alternate-design:link {
  color: hsl(212, 27%, 19%);
}

.page-header__nav-item--alternate-design:visited {
  color: hsl(212, 27%, 19%);
}

.page-header__nav-item--alternate-design:hover {
  background-color: #8ad8ff;
  color: hsl(0, 0%, 100%);
}

.page-header__hero {
  align-items: center;
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  padding: 0 40px 50px;
  text-align: center;
}

.page-header__title {
  font-size: 3rem;
  font-family: 'Fraunces', serif;
  letter-spacing: 5px;
  margin-top: 80px;
  text-transform: uppercase;
}

.page-header__icon {
  margin-top: 130px;
}

/* Page main */
.page-main {
  flex: 1;
}

.article {
  display: flex;
  flex-wrap: wrap;
}

.article__item {
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  display: flex;
  justify-content: center;
  flex: 50%;
  min-height: 100vh;
  padding: 50px 40px;
}

.article__item--vertical-center {
  align-items: center;
}

.flex-order-x {
  order: 1;
}

.flex-order-y {
  order: 2;
}

.article__stack {
  flex-basis: 400px;
}

.article__stack--vertical-bottom {
  margin-top: 420px;
}

.article__stack--color-darkcyan {
  color: hsl(167, 40%, 24%)
}

.article__stack--color-darkblue {
  color: hsl(198, 62%, 26%)
}

.article__title {
  font-size: 2rem;
  font-family: 'Fraunces', serif;
  font-weight: 900;
}

.article__title--text-center,
.article__copy--text-center {
  text-align: center;
}

.article__copy {
  font-size: 1.125rem;
  margin-top: 30px;
}

.article__copy--color-grey  {
  color: #747688;
}

.article__link {
  display: inline-block;
  font-weight: 600;
  font-family: 'Fraunces', serif;
  margin-top: 40px;
  margin-left: 5px;
  position: relative;
  text-transform: uppercase;
  z-index: 5;
}

.underline::after {
  border-radius: 5px;
  bottom: 0;
  content: "";
  height: 9px;
  left: -5px;
  position: absolute;
  width: 110%;
  z-index:-1;
}

.underline--color-yellow::after {
  background-color: #fce566;
}

.underline--color-yellow:hover::after {
  background-color: hsl(51, 100%, 49%);
}

.underline--color-red::after {
  background-color: #fea094;
}

.underline--color-red:hover::after {
  background-color: hsl(7, 99%, 70%);
}

.bg-img-transform {
  background-image: url(images/desktop/image-transform.jpg);
}

.bg-img-standout {
  background-image: url(images/desktop/image-stand-out.jpg);
}

.bg-img-graphic-design {
  background-image: url(images/desktop/image-graphic-design.jpg);
}

.bg-img-photography {
  background-image: url(images/desktop/image-photography.jpg);
}

/* Aside */
.page-aside {
  background-color: hsl(0, 0%, 100%);
  padding: 60px 40px;
}

.page-aside__title {
  color: #85888b;
  font-family: 'Fraunces', serif;
  font-size: 1.3rem;
  font-weight: 700;
  text-transform: uppercase;
  text-align: center;
}

.page-aside__stack {
  display: flex;
  justify-content: center;
  margin-top: 60px;
}

.card {
  flex-basis: 400px;
  text-align: center;
}

.card:not(:last-child) {
  margin-right: 30px;
}

.card__avatar {
  border-radius: 50%;
  height: 64px;
  width: 64px;
}

.card__body {
  margin-top: 60px; 
}

.card__copy {
  color: hsl(210, 9%, 31%);
  font-size: 1.125rem;
}

.card__footer {
  margin-top: 60px;
}

.card__title {
  font-family: 'Fraunces', serif;
  font-weight: 700;
  font-size: 1.2rem;
}

.card__subtitle {
  color: hsl(204, 2.1%, 46.5%);
}

/* Figure section */
.figure {
  display: flex;
  flex-wrap: wrap;
}

.picture {
  display: flex;
  flex: 1;
}

.picture__item {
  flex: 100%
}

/* Footer */
.page-footer {
  align-items: center;
  background-color: hsl(167, 44%, 70%);
  display: flex;
  flex-direction: column;
  padding: 50px 40px;
}

.page-footer__logo {
  filter: invert(54%) sepia(13%) saturate(901%) hue-rotate(118deg) brightness(92%) contrast(97%);
  height: auto;
  width: 144px;
}

.page-footer__nav {
  margin-top: 50px;
}

.page-footer__nav-item:not(:last-child) {
  margin-right: 50px
}

.page-footer__nav-item:link {
  color: hsl(167.4, 34.4%, 24.5%);
}

.page-footer__nav-item:visited {
  color: hsl(167.4, 34.4%, 24.5%);
}

.page-footer__nav-item:hover {
  color: hsl(0, 0%, 100%);
}

.page-footer__stack {
  margin-top: 70px;
}

.page-footer__stack-item:not(:last-child) {
   margin-right: 25px
}

.page-footer__icon:hover {
  filter: brightness(0) invert(1);
}

@media screen and (max-width: 767px) {
  .page-header {
    background-image: url(images/mobile/image-header.jpg);
    background-position: center center;
  }

  .page-header__top {
    padding: 30px;
  }

  .page-header__nav {
    align-items: center;
    background-color: hsl(0, 0%, 100%);
    color: hsl(240, 1%, 43%);
    display: none;
    flex: 100%;
    flex-direction: column;
    margin-top: 30px;
    padding: 20px;
    position: relative;
  }
  
  .page-header__nav::before {
    border-left: 23px solid transparent;
    border-right: 23px solid transparent;
    border-top: 20px solid hsl(0, 0%, 100%);
    content: "";
    font-size: 0;
    height: 0;
    line-height: 0;
    position: absolute;
    right: -13.2px;
    top: -5px;
    transform: rotate(90deg);
    width: 0;
  }
  
  .active {
    display: flex;
  }
  
  .page-header__nav-item {
    flex: 1;
  }

  .page-header__nav-item--alternate-design {
    background-color: hsl(51, 100%, 49%);
  }

  .page-header__nav-item:not(:last-child) {
    margin-bottom: 15px;
    margin-right: 0;
  }

  .hamburger-menu {
    cursor: pointer;
    display: block;
  }
  
  .page-header__hero {
    padding: 0 30px 50px;
  }

  .page-header__title {
    font-size: 2rem;
    letter-spacing: initial;
  }

  .page-header__icon {
  margin-top: 80px;
}
  
  .article__item {
    flex: 100%;
    padding: 50px 30px;
    text-align: center;
  }
  
  .flex-order-x {
    order: 2;
  }

  .flex-order-y {
    order:1;
  }
  
  .article__title {
    font-size: 1.5rem;
  }
  
  .article__stack {
    flex-basis: 100%;
  }

  .bg-img-transform {
    background-image: url(images/mobile/image-transform.jpg);
  }

  .bg-img-standout {
    background-image: url(images/mobile/image-stand-out.jpg);
  }
  
  .bg-img-graphic-design {
    background-image: url(images/mobile/image-graphic-design.jpg);
  }
  
  .bg-img-photography {
    background-image: url(images/mobile/image-photography.jpg);
  }
  
  .page-aside {
    padding: 60px 30px;
  }

  .page-aside__stack {
    flex-wrap: wrap;
  }
  
  .card {
    flex-basis: 100%;
  }

  .card:not(:last-child) { 
    margin-right: 0;
  }

  .card:not(:first-child) { 
    margin-top: 50px;
  }

  .card__avatar {
    margin-top: 30px
  }

  .picture {
    flex: 50%;
  }

  .page-footer {
    padding: 50px 30px;
  }
}

@media screen and (max-width: 376px) {
  .page-footer__nav {
    align-items: center;
    display: flex;
    flex-direction: column;
  }

  .page-footer__nav-item {
    flex: 100%;
  }

  .page-footer__nav-item:not(:last-child) {
    margin-bottom: 10px;
    margin-right: 0;
  }
}