/* 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 {
  /*font-family: 'Raleway', sans-serif;*/
  font-family: 'Open Sans', sans-serif;
}

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

.btn {
  background-color: hsl(224, 93%, 58%);
  color: hsl(0,0%,100%);
  cursor: pointer;
  font-weight: 700;
  font-family: 'Raleway', sans-serif;
  transition: background-color .3s;
}

.btn:hover {
  background-color: hsl(224.3,93%,66.3%);
}

.bold {
  font-weight: bold;
}

/*  visible only to screen readers */
.sr-only {
  height: 1px;
  left: -10000px;
  position: absolute;
  overflow: hidden;
  top: auto;
  width: 1px;
}

.error {
  display: none;
}

.active {
  display: block;
}

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

/* Page header top */
.page-header__top {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.page-header__logo {
  flex-basis: 126px;
}

.page-header__nav {
  align-items: center;
  display: flex;
}

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

.page-header__nav-link {
  font-family: 'Raleway', sans-serif;
}

/* Page header main */
.page-header__main {
  display: flex;
  padding-top: 100px;
}

.page-header__section {
  flex: 50%;
}

.page-header__section:last-child {
  padding-left: 40px;
}

.page-header__title {
  font-family: 'Raleway', sans-serif;
  font-size: 2.6rem;
  line-height: 1.4;
  margin-top: 50px;
}

.page-header__copy {
  margin-top: 20px;
}

/* Page header form */
.page-header__form {
  display: flex;
  margin-top: 25px;
  position: relative;
}

.page-header__email {
  border: 1px solid hsl(0,0%,0%);
  border-radius: 3px;
  flex-basis: 330px;
  outline: none;
  padding: 14px 18px;
}

.page-header__email:focus {
  outline: none;
}

.page-header__submit {
  border: 1px solid transparent;
  border-radius: 3px;
  box-shadow: 5px 5px 12px -5px hsl(0,0%,67.1%);
  flex-basis: 200px;
  margin-left: 20px;
  padding: 14px 32px;
}

#error1 {
  color: hsl(0,100%,61.6%);
  font-size: .875rem;
  left: 0;
  margin-left: 10px;
  margin-top: 10px;
  position: absolute;
  top: 54px;
  width: 100%;
}

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

.page-main__article {
  display: flex;
}

.page-main__section {
  flex: 50%;
}

.page-main__section:last-child {
  padding-left: 70px;
}

.page-main__title {
  font-size: 2rem;
  font-family: 'Raleway', sans-serif;
  margin-bottom: 20px;
}

.page-main__copy {
  max-width: 515px;
}

.page-main__copy--margin-bottom {
  margin-bottom: 15px;
}

/* Page main article bg-image */
/* Many thanks to: https://github.com/edavid78/Fylo-landing-page-with-two-column-layout
*/
.bg-image {
  background-color: hsl(240,75%,98.4%);
  margin-top: 200px;
  padding: 30px 60px 80px;
  position: relative;
}

.bg-image::before {
  background-image: url(images/bg-curve-desktop.svg);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  content: "";
  height: 114px;
  left: 0;
  position: absolute;
  top: -114px;
  transform: translateY(1px);
  width: 100%;
}

.page-main__link {
  align-items: center;
  color: hsl(170, 45%, 43%);
  display: flex;
  margin-top: 15px; 
  position: relative;
  width: max-content;
}

.page-main__link:visited {
  color: hsl(170, 45%, 43%);
}

.page-main__link:hover {
  color: hsl(169.8,33.7%,65.7%);
}

.page-main__link::after {
  background-color: hsl(170, 45%, 43%);
  bottom: 0;
  content: "";
  height: 1px;
  position: absolute;
  width: 100%;
}

.icon-arrow {
  margin-left: 5px;
}

.page-main__quote {
  background-color: hsl(0,0%,100%);
  border-radius: 8px;
  box-shadow: 0px 0px 12px -5px hsl(0,0%,67.1%);
  font-size: .875rem;
  max-width: 370px;
  margin-top: 50px;
  padding: 40px;
}

.icon-quotes {
  margin-bottom: 10px;
}

.page-main__user {
  align-items: center;
  display: flex;
  margin-top: 20px;
}

.user-avatar {
  border-radius: 50%;
  margin-right: 10px;
  width: 44px;
}

/* Page main article signup */
.signup {
  background-color: hsl(238, 22%, 44%);
  color: hsl(0,0%,100%);
  padding: 80px 60px;
}

.page-main__form {
  display: flex;
  flex-wrap: wrap;
  margin-top: 10px;
}

.page-main__email {
  border-radius: 3px;
  border: 1px solid transparent;
  box-shadow: 5px 5px 12px -5px hsl(238.1,21.6%,29%);
  flex-basis: 530px;
  padding: 14px 18px;
}

.page-main__email:focus {
  outline: none;
}

.page-main__submit {
  border: 1px solid transparent;
  border-radius: 3px;
  box-shadow: 5px 5px 12px -5px hsl(238.1,21.6%,29%);
  flex-basis: 250px;
  margin-top: 20px;
  padding: 14px 32px;
}

#error2 {
  color: #fff;
  flex-basis: 100%;
  font-size: .875rem;
  margin-left: 10px;
  margin-top: 10px;
}

/* Page footer */
.page-footer {
  background-color: hsl(243, 87%, 12%);
  padding: 80px 60px;
}

/* Page footer top */
.page-footer__top {
  display: flex;
}

.page-footer__logo {
  flex-basis: 126px;
  filter:  brightness(0) invert(1);
}

/* Page footer main */
.page-footer__main {
  display: flex;
  justify-content: space-between;
  margin-top: 40px;
}

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

.page-footer__contact-item:not(:last-child),
.page-footer__nav-item:not(:last-child) {
  margin-bottom: 20px;
}

.page-footer__contact-icon {
  display: inline-block;
  margin-right: 8px;
}

.page-footer__nav-item {
  transition: color .3s;
}

.page-footer__nav-item:hover {
  color: hsl(238.9,52.2%,59%);
}

.page-footer__social {
  margin-right: 80px;
}

.page-footer__social-item {
  align-items: center;
  border-radius: 50%;
  border: 1px solid hsl(0,0%,100%);
  display: inline-flex;
  height: 36px;
  justify-content: center;
  transition: border, color .2s;
  width: 36px;
}

.page-footer__social-item:not(:last-child)  {
  margin-right: 15px
}

.facebook:visited {
  color: hsl(0,0%,100%);
}

.facebook:hover {
  border: 1px solid hsl(220.2,45.9%,47.8%);
  color: hsl(220.2,45.9%,47.8%);
}

.twitter:visited {
  color: hsl(0,0%,100%);
}

.twitter:hover {
  border: 1px solid hsl(202.8,89.1%,53.1%);
  color: hsl(202.8,89.1%,53.1%);
}

.instagram:visited {
  color: hsl(0,0%,100%);
}

.instagram:hover {
  border: 1px solid hsl(326.1,56.9%,48.2%);
  color: hsl(326.1,56.9%,48.2%);
}

@media (max-width: 991px) {
  .page-header__copy {
    margin-top: 40px;
  }

  .page-header__form {
    margin-top: 50px;
  }
  
  .page-header__main {
    flex-wrap: wrap;
  }

  .page-header__section {
    flex: 100%;
    text-align: center;
  }

  .page-header__section:first-child {
    margin-top: 50px;
    order: 2;
  }

  .page-header__section:last-child {
    order: 1;
    padding-left: 0;
  }

  .page-header__email {
    flex: 2;
  }
  
  .page-header__submit {
    flex: 1;
  }
  
  #error1 {
    text-align: left;
  }

  .page-main__article {
    flex-wrap: wrap;
  }

  .page-main__section {
    flex: 100%;
  }

  .page-main__section:last-child {
    padding-left: 0;
  }

  .page-main__section--alternate:first-child {
    margin-top: 100px;
    order: 2;
  }
  
  .page-main__section--alternate:last-child {
    order: 1;
  }

  .page-main__title {
    margin-bottom: 40px;
    text-align: center;
  }
  
  .page-main__copy {
    max-width: 100%;
  }

  .page-main__copy--text-center {
    text-align: center;
  }
  
  .page-main__copy--margin-bottom {
    margin-bottom: 20px;
  }
  
  .page-main__link,
  .page-main__quote {
    margin: 50px auto 0; 
  }
  
  .page-main__form {
    justify-content: center;
    margin-top: 50px;
  }
  
  .page-main__email,
  .page-main__submit,
  #error2 {
    flex-basis: 60%;
  }

  .page-footer__main {
    flex-wrap: wrap;
  }
  
  .page-footer__contact,
  .page-footer__nav,
  .page-footer__social {
    flex: 100%
  }

  .page-footer__nav {
    margin-top: 40px;
  }

  .page-footer__social {
    margin-right: 0;
    margin-top: 40px;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .page-header {
    padding: 40px 30px;
  }
  
  .page-header__form {
    flex-wrap: wrap;
  }

  .page-header__email {
    flex-basis: 100%;
    order: 1;
  }

  .page-header__submit {
    flex-basis: 100%;
    margin-left: 0;
    margin-top: 20px;
    order: 3;
  }
  
  #error1 {
    flex-basis: 100%;
    left: 0;
    order: 2;
    position: static;
    top: 0;
  }

  .bg-image {
    padding: 30px 30px 80px;
  }

  .page-main__quote {
    max-width: 100%;
  }

  .signup {
    padding: 80px 30px;
  }
  
  .page-main__email,
  .page-main__submit,
   #error2 {
    flex-basis: 100%;
  }

  .page-footer {
    padding: 80px 30px;
  }
}

@media (max-width: 500px) {
  .page-header {
    padding: 40px 20px;
  }
  
  .page-header__logo {
    flex-basis: 106px;
  }
  
  .page-header__nav-item:not(:last-child) {
    margin-right: 20px;
  }
  
  .page-header__title {
    font-size: 2.2rem;
  }

  .page-main__title {
    font-size: 1.6rem;
  }
  
  .bg-image {
    padding: 30px 20px 80px; 
  }
  
  .page-main__quote {
    padding: 30px;
  }
  
  .signup {
    padding: 80px 20px;
  }

  .page-footer {
    padding: 80px 20px;
  }
  
  .page-footer__logo {
    flex-basis: 106px;
  }
}

@media (max-width: 375px) {
  .page-header__nav {
    flex: 100%;
    margin-top: 30px;
  }

  .bg-image::before {
    background-image: url(images/bg-curve-mobile.svg);
    height: 53px;
    top: -53px;
  }
}

@media (min-width: 1441px) {
  .page-main__email {
    flex-basis: 580px;
  }
}