styles.css

@import url('https://fonts.googleapis.com/css2?family=Lato:wght@400;700;900&display=swap');

:root {
  /* Colors */
  --primary-color: #DA291C;
  --secondary-color: #96172E;
  --text-black-color: #323237;
  --text-white-color: #FFFFFF;
  --text-gray-color: #979797;
  --border-color: #E2E8EE;
  --background-section: #FAFAFA;

  /* Fonts */
  --font-primary: 'Lato', sans-serif;

  /* Font-Sizes */
  --title-section: 3.6em;
  
  --title-size: 2.6em;
  --text-larger-size: 2.4em;
  
  --text-large-size: 2.2em;
  --text-medium-size: 1.8em;
  --text-size: 1.6em;
  --text-small-size: 1.4em;
  --text-smaller-size: 1.2em;
}

html {
  box-sizing: border-box;
}

* {
  box-sizing: inherit;
  padding: 0;
  margin: 0;
  font-family: var(--font-primary);
}

body {
  font-size: 10px; /* 1em = 10px */
  background-color: var(--text-white-color);
  color: var(--text-black-color);
}

/* General Styles */
img {
  display: block;
  max-width: 100%;
  height: auto;
}

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

ul {
  list-style: none;
}

input[type="radio"] {
  position: relative;
  display: inline-block;
  width: 2.3em;
  height: 2.3em;
  margin-right: .8em;
  border-radius: 50%;
  border: 3px solid #96172E;
  cursor: pointer;
  appearance: none;
}

input[type="radio"]::after  {
  content: "";
  position: absolute;
  top: .35em;
  left: .35em;
  display: block;
  width: 1.1em;
  height: 1.1em;
  border-radius: 50%;
  background-color: transparent;
  transition: background-color 0.15s linear;
}

input[type="radio"]:checked::after {
  background-color: var(--secondary-color);
}

.wrapper {
  width: 100%;
  max-width: 1200px;
  padding: 0 2em;
  margin: 0 auto;
}

.section {
  margin-bottom: 6em;
}

.section-header {
  margin-bottom: 5.6em;
}

.section-title {
  margin-bottom: .3em;
  font-size: var(--title-section);
  text-align: center;
  overflow-wrap: break-word;
  -webkit-hyphens: auto;
   -moz-hyphens: auto;
        hyphens: auto;
}

.link-more-options {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--secondary-color);
  font-size: var(--text-small-size);
  font-weight: 700;
  line-height: 1.5;
  text-decoration-line: underline;
  text-underline-offset: .17em;
}

.link-more-options span {
  margin-right: .5em;
  font-size: inherit;
}

.swap-icon {
  display: grid;
  place-content: center;
  width: 3.9em;
  height: 3.6em;
  padding: .3em;
}

.cta--button {
  width: 100%;
  height: 3.4em;
  font-size: var(--text-small-size);
  font-weight: 700;
  background-color: var(--primary-color);
  color: var(--text-white-color);
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

.cta--button.secondary {
  background-color: var(--text-white-color);
  color: var(--text-black-color);
  border: 2px solid #323237;
}


.cta--button:hover {
  background-color: var(--secondary-color);
  color: var(--text-white-color);
}

.separator {
  display: none;
  width: 1px;
  height: 3em;
  margin: 0 1em;
  background-color: var(--border-color);
}


/* --- Header --- */
.header {
  position: relative;
  display: grid;
  place-items: center;
  height: 72px;
  background-color: var(--primary-color);
}

.header__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.header__logo {
  width: 200px;
}

.header__menu--icon-mobile {
  cursor: pointer;
}

.header__menu--list {
  position: absolute;
  top: 100%;
  left: -110%;
  display: flex;
  flex-direction: column;
  width: 100%;
  background-color: #00000044;
  color: var(--text-white-color);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease-in-out;
  z-index: 1;
}

.header__menu--list.active {
  left: 0;
  opacity: 1;
  pointer-events: all;
}

.header__menu--list li:not(:last-of-type) {
  border-bottom: 1px solid var(--text-white-color);
}

.header__menu--list li a {
  display: block;
  padding: 15px 0;
  text-align: center;
  font-weight: 700;
  font-size: var(--text-size);
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

.header__menu--list li a:hover {
  background-color: var(--secondary-color);
}


/* --- Hero --- */
.hero {
  position: relative;
  height: 300px;
  overflow: hidden;
}

.hero__image {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

.hero__content {
  position: absolute;
  bottom: 5%;
  right: 3%;
  width: 90%;
  max-width: 480px;
  padding: 18px 26px;
  background: #00000047;
  color: var(--text-white-color);
}

.hero__title {
  font-size: var(--title-size);
  font-weight: 900;
  margin-bottom: .5em;
}

.hero__text {
  font-size: var(--text-medium-size);
  font-weight: 700;
}

.hero__content .cta--button {
  display: none;
  width: 50%;
  margin-top: 1em;
}

/* --- Main content --- */
.main {
  margin: 4em auto 9em;
}

/* Find flight */
.find-flight {
  padding: 5em 3em;
  border: 1px solid var(--border-color);
}

.find-flight__title {
  font-size: var(--text-larger-size);
  margin-bottom: 1em;
}

.find-flight__form label {
  display: block;
  margin-bottom: .5em;
  font-size: var(--text-size);
  font-weight: 700;
  cursor: pointer;
  user-select: none;
}

.find-flight__form input:not([type="radio"]),
.find-flight__form select {
  display: block;
  width: 100%;
  height: 2.6em;
  padding: 0 1.4em;
  margin: .5em 0;
  font-size: var(--text-size);
  line-height: 1.5;
  border: none;
  outline: none;
  border-bottom: 1px solid var(--text-black-color);
}

.find-flight__form ::-webkit-calendar-picker-indicator {
  display: none;
  pointer-events: none;
}

.find-flight__form--input-container {
  margin-bottom: 2.5em;
}

.find-flight__form--input-container div {
  margin: 1em 0;
}

.find-flight__form--routes {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  max-width: 500px;
  margin-bottom: 2em;
}

.find-flight__form--routes label {
  display: flex;
  align-items: center;
  margin-right: .3em;
}

.find-flight__form--locations {
  display: flex;
  flex-direction: column;
}

.swap-locations--button {
  align-self: center;
  background-color: var(--text-white-color);
  border-radius: 5px;
  border: 1px solid #979797;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

.swap-locations--button:hover {
  transform: scale(1.07);
}

.find-flight__form--promocional-code a {  
  height: 24px;
}

.promocional-code--icon {
  width: 1.4em;
  height: 1.4em;
  margin-right: .5em;
  color: var(--secondary-color);
}

.promocional-code--icon line {
  stroke: var(--text-white-color);
}


/* Recommendations */
.recommendations__header {
  margin-bottom: 4em;
}

.recommendations__header .link-more-options {
  justify-content: center;
}

.recommendations__list-cards {
  position: relative;
}

.recommendations__list-cards--carousel {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: flex-start;
  gap: 2em;
  padding: 0 3em;
  overflow-x: auto;
  scroll-snap-align: start;
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.recommendations__list-cards--carousel::-webkit-scrollbar {
  display: none;
}

.carousel-button {
  position: absolute;
  top: 20%;
  padding: .7em;
  border: none;
  background-color: transparent;
  cursor: pointer;
  transition: all 0.3s ease-in-out;
}

.carousel-button:hover {
  background-color: rgba(0, 0, 0, 0.2);
}

.carousel-button--prev {
  left: -5%;
}

.carousel-button--next {
  right: -5%;
}

.carousel-button[disabled] {
  cursor: not-allowed;
  opacity: .5;
}

/* Card */
.card {
  scroll-snap-align: center;
  min-width: 294px;
  margin: 0 auto;
  border-radius: 3px;
  border: 1px solid var(--border-color);
}

.card__header {
  height: 196px;
}

.card__header img {
  object-fit: cover;
}

.card__details {
  padding: 2.2em;
}

.card__details__route,
.card__details__price,
.card__details__info {
  margin-bottom: 1.6em;
}

.card__details__route {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card__details__route .country {
  font-size: var(--text-large-size);
  font-weight: 700;
}

.card__details__route .acronym {
  color: var(--text-gray-color);
  font-size: var(--text-smaller-size);
  text-transform: uppercase;
}

.card__details__price p {
  font-size: var(--text-size);
}

.card__details__price .price {
  display: inline-block;
  margin-right: .1em;
  font-size: var(--text-larger-size);
  font-weight: 700;
}

.card__details__price .currency {
  font-size: var(--text-smaller-size);
  text-transform: uppercase;
}

.card__details__info {
  display: flex;
  align-items: center;
  color: var(--text-gray-color);
}

.card__details__info img {
  width: 1.6em;
  height: 1.6em;
  margin-right: .5em;
}

.card__details__info p {
  font-size: var(--text-smaller-size);
}

.card__details__info p:not(:last-of-type):after {
  content: "|";
  margin: 0 .5em;
  font-size: 1.15em;
}


/* Shortcuts */
.shortcuts__list-cards,
.considerations__list-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
}

.shortcuts__list-cards {
  padding: 0 1.7em;
}

.shortcuts__card {
  display: grid;
  grid-template-columns: 3em 1fr;
  justify-content: center;
  align-items: flex-start;
  gap: 1.5em;
  width: 100%;
  margin-bottom: 4.8em;
}

.shortcuts__card__icon {
  display: grid;
  place-items: center;
  height: 2.2em;
}

.shortcuts__card__header h3 {
  font-size: var(--text-medium-size);
}


/* Considerations */
.considerations__list-cards {
  gap: 3.2em;
}

.considerations__card {
  max-width: 460px;
  padding: 3.2em;
  border: 1px solid var(--border-color);
}

.considerations__card__header h3 {
  font-size: var(--text-large-size);
}

.considerations__card__details {
  font-size: var(--text-small-size);
}

.shortcuts__card__header,
.shortcuts__card__details,
.considerations__card__header,
.considerations__card__details {
  margin-bottom: 1.6em;
}

.shortcuts__card__details {
  font-size: var(--text-small-size);
}


/* Footer */
.shortcuts,
.footer {
  padding: 6em 0;
  background: var(--background-section);
}

.footer {
  border-top: 1px solid #D8D8D8;
}

.footer .wrapper {
  padding: 0 4em;
}

.footer :is(section:not(:last-of-type), hr) {
  margin-bottom: 3.2em;
}

.footer h3 {
  color: var(--primary-color);
  font-size: var(--text-larger-size);
  margin-bottom: .8em;
}

.footer__menus-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  gap: 2.4em; 
}

.menu {
  width: 280px;
}

.menu ul {
  font-size: var(--text-small-size);
}

.menu ul li {
  padding: .5em 0;
}

.menu ul li a:hover {
  color: var(--primary-color);
}

.footer__logos-container > div {
  display: flex;
  flex-direction: column;
}

.footer__logos {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 3.2em;
  margin-bottom: 2.4em;
}

.footer__logos.social-media img {
  width: 1.8em;
  height: 1.8em;
}

.footer__logos.social-media a:hover img {
  transform: scale(1.1);
}

.footer__logos.social-media span {
  display: none;
}

.footer__copyright--logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.7em;
}

.footer__copyright--text {
  color: var(--text-gray-color);
  font-size: var(--text-small-size);
  font-weight: 700;
}




/* Responsive */
@media screen and (min-width: 400px) {
  /* Better slide centering */
  .recommendations__list-cards--carousel {
    padding: 0 4em;
  }
  
  /* Avoid overflow due to arrows */
  .carousel-button--prev {
    left: 0;
  }
  .carousel-button--next {
    right: 0;
  }
}

@media screen and (min-width: 510px) {
  /* Footer menus: alig flex items in rows */
  .footer__menus-container {
    flex-wrap: nowrap;
    align-items: flex-start;
  }
}

@media screen and (min-width: 610px) {
  .wrapper {
    padding: 0 4em;
  }
  
  /* Navbar for bigger than mobile devices */
  .header__menu--icon-mobile {
    display: none;
  }

  .header__menu--list {
    position: initial;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    gap: 2em;
    height: 100%;
    opacity: 1;
    pointer-events: all;
    background-color: initial;
    transition: none;
    z-index: initial;
  }

  .header__nav .header__menu--list li {
    position: relative;
    height: 100%;
    border: none;
  }

  .header__nav .header__menu--list li.active::after {
    content: "";
    position: absolute;
    top: 0;
    width: 100%;
    border-top: 7px solid var(--text-white-color);
  }
  
  .header__menu--list li a {
    display: flex;
    align-items: center;
    height: 100%;
  }
  
  /* Hero  */
  .hero {
    height: 380px;
  }
  
  .hero__content .cta--button {
    display: initial; /* Show the cta button */
  }
  
  .recommendations__list-cards--carousel {
    gap: 4em; /* Better slide centering */
  }
  
  /* Footer */
  .footer .wrapper {
    padding: 0 2em;
  }

  .footer__logos-container > div {
    flex-direction: row;
    justify-content: space-between;
  }

  .footer__logos-container .separator {
    display: initial; /* Show the separator */
    margin-top: -0.5em;
  }
}

@media screen and (min-width: 768px) {
  .wrapper {
    width: 90%;
    padding: 0 2em;
  }
  
  /* Hero */
  .hero {
    height: 470px;
  }

  .hero__content {
    right: 5%;
  }

  /* Find fligh centered */
  .find-flight {
    max-width: 700px;
    margin: 0 auto;
  }

  /* Footer: Show brands */
  .footer__logos.social-media {
    gap: 1.5em;
  }

  .footer__logos.social-media a {
    display: flex;
    align-items: center;
  }

  .footer__logos.social-media span {
    display: initial;
    margin-left: .5em;
    font-size: var(--text-small-size);
  }
}

@media screen and (min-width: 940px) {  
  .hero__title {
    margin-bottom: .6em;
    font-size: var(--title-section);    
  }

  .hero__content .cta--button {
    margin-top: 2em;
  }

  /* Find fligh form: flex in row */
  .find-flight {
    max-width: 960px;
  }

  .find-flight__form {
    display: flex;
    flex-direction: column;
  }

  .find-flight__form .cta--button {
    align-self: flex-end;
    width: 250px;
  }

  .find-flight__form--flex, 
  .find-flight__form--locations {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 2em;
  }

  .find-flight__form--flex {
    margin-right: 2em;
  }

  /* Shortcuts */
  .shortcuts__list-cards {
    justify-content: space-between;
    gap: 2em;
  }

  .shortcuts__list-cards .separator {
    display: initial; /* Show the separator */
    align-self: center;
    height: 10em;
    margin: 0;
  }

  .shortcuts__card {
    flex: 1;
  }
}

@media screen and (min-width: 1024px) {
  .hero__content {
    right: 7%;
  }
  
  /* Recommendations: hide carousel */
  .recommendations__list-cards--carousel {
    justify-content: center;
    gap: 1.5em;
    padding: 0;
    overflow: initial;
  }

  .recommendations__list-cards .carousel-button {
    display: none;
  }

  .recommendations__list-cards--carousel .card {
    min-width: initial;
  }
}

@media screen and (min-width: 1200px) {
  .wrapper {
    width: 80%;
  }

  /* Overlap the find flight with the hero */
  .find-flight {
    position: relative;
    top: -8em;
    background-color: var(--text-white-color);
  }

  /* Better positioning of the content hero 
    and recommendation cards */
  .hero__content {
    right: 10%;
    bottom: 20%;
  }

  .recommendations__list-cards--carousel {
    gap: 4em;
  }

  .recommendations__list-cards--carousel .card {
    min-width: 290px;
  }
}

@media screen and (min-width: 1400px) {
  .hero__content {
    right: 15%;
  }
}