/* ------------------- */
/* Custom properties   */
/* ------------------- */
:root {
  --clr-violet-400: 257 40% 49%;
  --clr-magenta-400: 300 69% 71%;
  --clr-magenta-500: 322 100% 66%;

  --clr-neutral-100: 0 0% 100%;
  --clr-neutral-900: 0 0% 0%;

  --ff-heading: "Poppins", sans-serif;
  --ff-body: "Open Sans", sans-serif;

  --fs-200: 0.75rem;
  --fs-300: 0.875rem;
  --fs-400: 1rem;
  --fs-500: 1.25rem;
  --fs-600: 1.5rem;

  --fw-400: 400;
  --fw-600: 600;
}

@media (min-width: 55em) {
  :root {
    --fs-200: 1.125rem;
    --fs-400: 1.125rem;
    --fs-600: 2.5rem;
  }
}

/* ------------------- */
/* Reset               */
/* ------------------- */

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

/* Remove default margin */
body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role="list"],
ol[role="list"] {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

/* Set core body defaults */
body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
  font-family: var(--ff-body);
  font-size: var(--fs-400);
  font-weight: var(--fw-400);
  color: hsl(var(--clr-neutral-100));
  background-color: hsl(var(--clr-violet-400));
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture {
  max-width: 100%;
  display: block;
}

/* Inherit fonts for inputs and buttons */
input,
button,
textarea,
select {
  font: inherit;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ------------------- */
/* Composition         */
/* ------------------- */
.flex {
  display: flex;
  gap: var(--flex-gap, 1rem);
}

.grid {
  display: grid;
  gap: var(--grid-gap, 1rem);
}

/* ------------------- */
/* Utility             */
/* ------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.ff-heading {
  font-family: var(--ff-heading);
}

.fs-600 {
  font-size: var(--fs-600);
}

.fw-600 {
  font-weight: var(--fw-600);
}

/* ------------------- */
/* Block               */
/* ------------------- */
.container {
  --grid-gap: 0;
  place-items: center;
  grid-template-rows: min-content auto min-content;
  grid-template-areas:
    "header"
    "main"
    "footer";
  min-height: 100vh;
  min-width: fit-content;
  padding: 2.5rem 2.25rem;
  background-image: url(/images/bg-mobile.svg);
  background-repeat: no-repeat;
  background-size: cover;
}

header {
  grid-area: header;
  justify-self: flex-start;
}

main {
  grid-area: main;
  text-align: center;
}

footer {
  grid-area: footer;
}

header > .logo {
  max-width: 7.5rem;
}

main > .intro {
  --flex-gap: 3.75rem;
  flex-direction: column;
  align-items: center;
  margin-block: 4.25rem;
}

main > .intro div {
  margin-inline: auto;
}

main > .intro h1 {
  max-width: 20ch;
  margin-inline: auto;
}

main > .intro p {
  max-width: 50ch;
  margin-inline: auto;
  margin-block: 1rem 1.5rem;
}

footer > ul {
  --flex-gap: 0.75rem;
  justify-content: center;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* https://developer.mozilla.org/en-US/docs/Web/CSS/list-style#accessibility_concerns */
footer > ul li::before {
  content: "\200B";
  display: block;
  height: 0;
}

@media (min-width: 55em) {
  .container {
    padding: 2.5rem 5rem;
    background-image: url(/images/bg-desktop.svg);
  }

  header > .logo {
    max-width: 12.5rem;
  }

  main {
    text-align: start;
  }

  main > .intro {
    flex-direction: row;
    margin-block: 6.5rem 1.75rem;
  }

  main > .intro div:last-of-type {
    align-self: flex-start;
  }

  main > .intro h1 {
    margin-top: 2rem;
  }

  main > .intro p {
    margin-block: 1.5rem;
  }

  footer {
    justify-self: flex-end;
  }

  footer > ul {
    --flex-gap: 1rem;
  }
}

/* ------------------- */
/* Exception           */
/* ------------------- */
.button {
  cursor: pointer;
  background-color: transparent;
  border: 0;
  padding: 0;
  font-size: var(--fs-200);
  font-weight: var(--fw-400);
  text-align: center;
}

.button[data-type="primary"] {
  color: hsl(var(--clr-violet-400));
  background-color: hsl(var(--clr-neutral-100));
  padding: 1em 6.25em;
  border-radius: 1.67em;
  box-shadow: 1px 3px 5px hsl(var(--clr-neutral-900) / 0.27);
  transition: background-color 200ms ease-in-out, color 200ms ease-in-out;
}

.button[data-type="primary"]:hover,
.button[data-type="primary"]:focus {
  color: hsl(var(--clr-neutral-100));
  background-color: hsl(var(--clr-magenta-400));
}

.link {
  text-align: center;
}

.link[data-type="icon"] {
  display: grid;
  place-items: center;
  padding: 0.375rem;
  border-radius: 50%;
  border: 1px solid hsl(var(--clr-neutral-100));
  color: hsl(var(--clr-neutral-100));
  font-size: var(--fs-300);
  text-decoration: none;
  transition: border-color 200ms ease-in-out, color 200ms ease-in-out;
}

.link[data-type="icon"]:hover,
.link[data-type="icon"]:focus {
  color: hsl(var(--clr-magenta-500));
  border-color: hsl(var(--clr-magenta-500));
}

@media (min-width: 55em) {
  .button[data-type="primary"] {
    padding: 0.75em 3.75em;
    box-shadow: 2px 4px 9px 3px hsl(var(--clr-neutral-900) / 0.26);
  }

  .link[data-type="icon"] {
    padding: 0.5em;
    font-size: var(--fs-500);
  }
}