/* || Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  text-size-adjust: none;
  -webkit-text-size-adjust: none;
}

html:focus-within {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
}

img,
picture {
  display: block;
  width: 100%;
}

button,
input,
textarea,
select {
  font: inherit;
  border: none;
}

ul,
ol {
  list-style: none;
}

a {
  text-decoration: none;
}

a:link,
a:visited,
a:active {
  color: inherit;
}

@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }

  *,
  ::after,
  ::before {
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    scroll-behavior: auto !important;
  }
}

/* || Variables */
:root {
  /* colors */
  --blue-950: hsl(233, 26%, 24%);
  --green-500: hsl(136, 64%, 51%);
  --cyan-400: hsl(192, 69%, 51%);
  --gray-600: hsl(233, 8%, 62%);
  --gray-100: hsl(220, 16%, 96%);
  --gray-50: hsl(0, 0%, 98%);
  --white: hsl(0, 100%, 100%);

  --gradient-1: #33d35e, #2ab6d9;
  --gradient-2: #2d314d, #2d314d00;

  /* fonts */
  --step-4: clamp(2.4414rem, 2.0504rem + 1.6685vw, 3.552rem);
  --step-3: clamp(1.9531rem, 1.7026rem + 1.069vw, 2.6647rem);
  --step-2: clamp(1.5625rem, 1.4088rem + 0.6558vw, 1.999rem);
  --step-1: clamp(1.25rem, 1.1621rem + 0.375vw, 1.4996rem);
  --step-0: clamp(1rem, 0.956rem + 0.1878vw, 1.125rem);
  --step--1: clamp(0.8rem, 0.7845rem + 0.066vw, 0.844rem);

  --FW-light: 300;
  --FW-regular: 400;
  --FW--bold: 700;

  --FF: "Public Sans", sans-serif;

  /* spacing */
}

/* || Utilities */
.--fs-step--1 {
  font-size: var(--step--1);
}

/* || Generals */
body {
  font-family: var(--FF);
  background-color: var(--white);
}

h1,
h2,
h3 {
  font-weight: var(--FW--light);
  line-height: 1.2;
  color: var(--blue-950);
}

h1 {
  font-size: var(--step-4);
  letter-spacing: -0.75px;
}

h2 {
  font-size: var(--step-3);
  letter-spacing: -0.5px;
}

h3 {
  font-size: var(--step-2);
  letter-spacing: -0.4px;
}

p {
  font-size: var(--step-0);
  letter-spacing: -0.25px;
  color: var(--gray-600);
}

/* || Site-header */
.site-header {
  display: flex;
  height: 5rem;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  padding-inline: 1.5rem;
  background-color: var(--white);
  z-index: 100;
}

.scroll-up {
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.site-header__nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  height: 100%;
}

.site-header__nav .button-request {
  display: none;
}

.site-header__links {
  display: none;
  flex-direction: row;
  align-items: center;
  height: 100%;
}

.site-header__links li {
  display: flex;
  align-items: center;
  position: relative;
  height: 100%;
  padding-inline: 1.5rem;
}

.site-header__links li::after {
  display: none;
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0.2rem;
  background: linear-gradient(to left, var(--gradient-1));
}

.site-header__links li:hover::after {
  display: block;
}

.site-header__dropdown-menu {
  display: none;
  position: absolute;
  top: 7.5rem;
  right: 10%;
  background-color: var(--white);
  width: 80%;
  height: 0;
  border-radius: 0.5rem;
  transition: height 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  overflow: hidden;
}

.site-header__dropdown-menu.show {
  height: 13rem;
}

/* overlay when menu is shown*/
.overlay {
  display: none;
  position: fixed;
  top: 5rem;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, var(--gradient-2));
  z-index: -1;
  cursor: pointer;
}

.site-header__dropdown-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block: 1rem;
  color: var(--blue-950);
  text-align: center;
}

.site-header__dropdown-links li {
  padding: 0.5rem;
  width: 100%;
  height: 100%;
}

.site-header__dropdown-links li:hover {
  background-color: var(--gray-600);
}

/* || logo */
.logo {
  width: 10rem;
  height: auto;
  cursor: pointer;
}

/* || hero */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
  padding-bottom: 3rem;
}

.hero__img-wrapper {
  background: url("../images/bg-intro-mobile.svg") no-repeat center/cover;
  width: 100%;
  margin-top: -5rem;
}

.hero__img {
  width: clamp(20.375rem, 3.9151rem + 70.229vw, 37.625rem);
  margin: 0 auto;
  transform: translateY(-2rem);
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  padding: 1.5rem;
  max-width: 35rem;
}

/* || Intro */
.intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 3rem;
  padding: 4rem 1.5rem;
  background-color: var(--gray-100);
}

.intro__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: 35rem;
}

.intro__card-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.intro__card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
  max-width: 20rem;
}

.intro__card-img {
  width: 4.5rem;
  height: 4.5rem;
  padding-bottom: 1rem;
}

/* || Latest articles */
.latest-articles {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
  padding: 5rem 1.5rem;
  background-color: var(--gray-50);
}

.latest-articles__articles-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
  gap: clamp(1rem, -0.1429rem + 2.381vw, 2rem);
  justify-content: center;
  width: 100%;
  max-width: 30rem;
}

.latest-articles__article {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 3;
  gap: 1rem;
  border-radius: 0.5rem;
  background-color: var(--white);
}

.latest-articles__img-wrapper {
  object-fit: cover;
}

.latest-articles__img {
  border-top-left-radius: 0.5rem;
  border-top-right-radius: 0.5rem;
  width: 100%;
  height: 100%;
}

.latest-articles__content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
}

.latest-articles__content h3 {
  font-size: var(--step-0);
}

.latest-articles__content p {
  font-size: var(--step-0);
}

/* || Footer */
.footer {
  background-color: var(--blue-950);
}

.footer__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding-block: 3.5rem;
  color: var(--white);
  max-width: 14rem;
  margin: 0 auto;
}

/* || Button */
.button-request {
  width: 10rem;
  height: 2.75rem;
  border-radius: 2.5rem;
  background: linear-gradient(to bottom left, var(--gradient-1));
  padding: 0.5rem 1rem;
  color: var(--white);
}

.button-request:hover {
  opacity: 0.6;
}

.footer__social-media {
  display: flex;
  gap: 1.5rem;
}

.footer__social-media img {
  width: 1.25rem;
  height: 1.25rem;
}

.footer__nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

@media screen and (min-width: 375px) {
  .hero-text {
    animation: hiding 0.3s ease-in, slide-right 1s ease-in 0.3s,
      appear 1s ease-in 0.3s;
  }

  .hero__img-wrapper {
    animation: hiding 0.8s ease-in, slide-left 1s ease-in 0.8s,
      appear 1s ease-in 0.8s;
  }

  .hero__img {
    animation: hiding 1.5s ease-in, appear 1s ease-in 1.5s;
  }
}

@media screen and (min-width: 768px) {
  /* hero */
  .hero__img-wrapper {
    background-image: url("../images/bg-intro-desktop.svg");
    max-width: 60rem;
  }

  /* intro */
  .intro {
    gap: 4.5rem;
    padding: 5rem;
  }

  .intro__card-wrapper {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem 4rem;
  }

  .intro__card {
    display: grid;
    grid-template-rows: subgrid;
    grid-row: span 3;
    align-items: start;
    text-align: left;
  }

  /* latest-articles */
  .latest-articles {
    padding: 5rem;
    gap: 4rem;
  }

  .latest-articles__articles-container {
    max-width: 60rem;
  }

  .latest-articles__content {
    box-sizing: padding-box;
    padding: 1.5rem 2.5rem;
  }

  .latest-articles__img-wrapper {
    overflow: hidden;
  }
}

/* enable to show dropdown menu */
@media screen and (max-width: 899px) {
  .site-header__dropdown-menu {
    display: block;
  }

  .site-header .button-request {
    display: none;
  }
}

/* show navagation links and button (hide toggle button) */
@media screen and (min-width: 900px) {
  /* Site-header */
  .site-header {
    justify-content: space-around;
  }

  .site-header__links {
    display: flex;
  }

  .site-header__nav .button-request {
    display: block;
  }

  .button-toggle {
    display: none;
  }
}

@media screen and (min-width: 1440px) {
  /* hero */
  .hero {
    flex-direction: row-reverse;
    justify-content: space-between;
  }

  .hero__img-wrapper {
    background-position: 20% 50%;
  }

  .hero__img {
    transform: translateX(5%);
  }

  .hero-text {
    text-align: left;
    align-items: start;
    max-width: 35rem;
    margin-left: 10rem;
  }

  /* intro */
  .intro {
    padding: 6rem 8rem;
  }

  .intro__card-wrapper {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  /* latest-articles */
  .latest-articles {
    gap: 3.5rem;
  }

  .latest-articles__articles-container {
    max-width: 90rem;
  }

  /* footer */
  .footer__content {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    grid-auto-rows: 1fr;
    gap: 1rem;
    padding-block: 3rem;
    max-width: 70rem;
  }

  .footer .logo {
    grid-column: span 1;
  }

  .footer__nav {
    grid-column: 4 / 6;
    grid-row: 1 / 3;
    display: grid;
    grid-template-columns: subgrid;
    grid-template-rows: repeat(3, minmax(0, 1fr));
  }

  .footer .button-request {
    grid-column: -1 / span 2;
    grid-row: 1 / 2;
    justify-self: end;
  }

  .footer span {
    grid-column: -1 / span 2;
    grid-row: 2 / 3;
    justify-self: end;
  }

  .footer__social-media {
    grid-column: span 1;
    grid-row: 2 / 3;
  }
}

@keyframes hiding {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}

@keyframes appear {
  0% {
    opacity: 0;
  }

  33% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes slide-left {
  0% {
    transform: translateX(6rem);
  }

  100% {
    transform: translateX(0);
  }
}

@keyframes slide-right {
  0% {
    transform: translateX(-6rem);
  }

  100% {
    transform: translateX(0);
  }
}

@keyframes slide-down {
  0% {
    transform: translateY(-20rem);
  }

  100% {
    transform: translateY(0);
  }
}