style.css

/*  Modern CSS reset - https://piccalil.li/blog/a-modern-css-reset/ */
/* 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;
  line-height: 1.5;
  text-rendering: optimizeSpeed;
}

/* 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;
  }
}
@font-face {
  font-style: normal;
  font-weight: 700;
  src: local("Space Mono"), local("Space Mono Bold"), local("SpaceMono Bold"),
    local("SpaceMono-Bold"), url("/fonts/SpaceMonoBold.woff2") format("woff2"),
    url("/fonts/SpaceMonoBold.woff") format("woff");
  font-family: "Space Mono";
  font-display: swap;
}
@font-face {
  font-style: normal;
  font-weight: 400;
  src: local("Space Mono"), local("Space Mono Regular"),
    local("SpaceMono Regular"), local("SpaceMono-Regular"),
    url("/fonts/SpaceMonoRegular.woff2") format("woff2"),
    url("/fonts/SpaceMonoRegular.woff") format("woff");
  font-family: "Space Mono";
  font-display: swap;
}
:root {
  --blue: hsl(212deg 100% 50%);
  --light-blue: hsl(217deg 20% 51%);
  --dark-blue-100: hsl(217deg 35% 45%);
  --dark-blue-200: hsl(222deg 41% 20%);
  --very-dark-blue-100: hsl(217deg 21% 21%);
  --very-dark-blue-200: hsl(220deg 18% 16%);
  --very-dark-blue-300: hsl(220deg 40% 13%);
  --very-light-blue: hsl(227deg 100% 98%);
  --white: hsl(0deg 0% 100%);
  --primary-transition: 250ms ease-in-out;
  --container-max-width: clamp(21.88rem, calc(6.39rem + 66.09vw), 45.63rem);
  --body-padding: clamp(1.5rem, calc(0.03rem + 6.26vw), 3.75rem);
  --landmark-font-size: clamp(0.81rem, calc(0.6rem + 0.89vw), 0.94rem);
  --header-logo-color: var(--very-dark-blue-200);
  --link-color: var(--dark-blue-100);
  --body-background-color: var(--very-light-blue);
  --body-font-color: var(--dark-blue-100);
  --result-background-color: var(--white);
  --result-name-color: var(--very-dark-blue-100);
  --result-statistic-background-color: var(--very-light-blue);
  --result-number-color: var(--very-dark-blue-100);
  --theme-switcher-text-hover-color: var(--very-dark-blue-200);
  --search-form-input-background-color: var(--white);
  --search-form-input-color: var(--very-dark-blue-200);
  --focus-visible-outline-color: var(--very-dark-blue-300);
  --primary-box-shadow: 0 1rem 1.875rem -0.625rem rgb(70 96 187 / 20%);
}

@media screen and (prefers-color-scheme: dark) {
  :root {
    --header-logo-color: var(--white);
    --link-color: var(--white);
    --body-background-color: var(--very-dark-blue-300);
    --body-font-color: var(--white);
    --result-background-color: var(--dark-blue-200);
    --result-name-color: var(--white);
    --result-statistic-background-color: var(--very-dark-blue-300);
    --result-number-color: var(--white);
    --theme-switcher-text-hover-color: hsl(222deg 44% 70%);
    --search-form-input-background-color: var(--dark-blue-200);
    --search-form-input-color: var(--white);
    --focus-visible-outline-color: var(--white);
    --primary-box-shadow: none;
  }
}
.is-light {
  --header-logo-color: var(--very-dark-blue-200);
  --link-color: var(--dark-blue-100);
  --body-background-color: var(--very-light-blue);
  --body-font-color: var(--dark-blue-100);
  --result-background-color: var(--white);
  --result-name-color: var(--very-dark-blue-100);
  --result-statistic-background-color: var(--very-light-blue);
  --result-number-color: var(--very-dark-blue-100);
  --theme-switcher-text-hover-color: var(--very-dark-blue-200);
  --search-form-input-background-color: var(--white);
  --search-form-input-color: var(--very-dark-blue-200);
  --focus-visible-outline-color: var(--very-dark-blue-300);
  --primary-box-shadow: 0 1rem 1.875rem -0.625rem rgb(70 96 187 / 20%);
}

.is-dark {
  --header-logo-color: var(--white);
  --link-color: var(--white);
  --body-background-color: var(--very-dark-blue-300);
  --body-font-color: var(--white);
  --result-background-color: var(--dark-blue-200);
  --result-name-color: var(--white);
  --result-statistic-background-color: var(--very-dark-blue-300);
  --result-number-color: var(--white);
  --theme-switcher-text-hover-color: hsl(222deg 44% 70%);
  --search-form-input-background-color: var(--dark-blue-200);
  --search-form-input-color: var(--white);
  --focus-visible-outline-color: var(--white);
  --primary-box-shadow: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-delay: -1ms !important;
    animation-iteration-count: 1 !important;
    transition-delay: 0s !important;
    transition-duration: 0s !important;
    background-attachment: initial !important;
    scroll-behavior: auto !important;
  }
}
*,
*::after,
*::before {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:focus {
  outline: 0.125rem dashed var(--focus-visible-outline-color);
  outline-offset: -0.125rem;
}

/**
 * Screen Reader Class
 * 
 * To hide content visually.
 *
 * For more information: https://gist.github.com/ffoodd/000b59f431e3e64e4ce1a24d5bb36034
 */
.sr-only {
  position: absolute !important;
  clip-path: inset(50%) !important;
  margin: -1px !important;
  border: 0 !important;
  padding: 0 !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  white-space: nowrap !important;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-color: var(--body-background-color);
  padding: var(--body-padding);
  color: var(--body-font-color);
}
@media (prefers-reduced-motion: no-preference) {
  body {
    transition: background-color var(--primary-transition),
      color var(--primary-transition);
  }
}

header,
main,
footer {
  font: var(--landmark-font-size) / 1.6 "Space Mono", monospace;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/**
 * Set font-size on Form Elements for a 
 * Better Mobile Experience
 *
 * To avoid mobile browsers (iOS Safari,
 * et al.) from zooming in on HTML form 
 * elements when a <select> drop-down is
 * tapped, add font-size to the selector
 * rule.
 *
 * Source: https://github.com/AllThingsSmitty/css-protips#set-font-size-on-form-elements-for-a-better-mobile-experience
 */
input[type="text"],
input[type="number"],
select,
textarea {
  font-size: 1rem;
}

svg {
  stroke-width: 0;
  stroke: currentColor;
  fill: currentColor;
}

/*
 * Make sure when the user disable
 * JavaScript the content is hidden.
 */
.no-js header,
.no-js main,
.no-js footer {
  display: none !important;
}

noscript {
  font-size: 2rem;
  line-height: 1.2;
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}

.container {
  margin: 0 auto;
  max-width: var(--container-max-width);
}

.theme-switcher {
  display: flex;
  align-items: center;
  border: 0;
}

.theme-switcher:focus-within {
  outline: 0.125rem dashed var(--focus-visible-outline-color);
  outline-offset: -0.125rem;
}

.theme-switcher__container {
  position: relative;
}

.theme-switcher__radio {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.theme-switcher__text {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.15625rem;
  text-transform: uppercase;
}
@media (prefers-reduced-motion: no-preference) {
  .theme-switcher__text {
    transition: color var(--primary-transition);
  }
}

.theme-switcher__radio:hover + .theme-switcher__text,
.theme-switcher__radio:active + .theme-switcher__text {
  color: var(--theme-switcher-text-hover-color);
}

.theme-switcher__radio:focus + .theme-switcher__text,
.theme-switcher__radio:focus-visible + .theme-switcher__text {
  outline: 0.125rem dashed var(--focus-visible-outline-color);
  outline-offset: -0.125rem;
}

.theme-switcher__radio[checked] {
  position: absolute !important;
  clip-path: inset(50%) !important;
  margin: -1px !important;
  border: 0 !important;
  padding: 0 !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  white-space: nowrap !important;
}

.theme-switcher__radio[checked] + label {
  position: absolute !important;
  clip-path: inset(50%) !important;
  margin: -1px !important;
  border: 0 !important;
  padding: 0 !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  white-space: nowrap !important;
}

.search-form {
  position: relative;
  margin-top: 2.25rem;
  margin-bottom: 2rem;
}
@media screen and (min-width: 37.5em) {
  .search-form {
    margin-top: 2.625rem;
    margin-bottom: 2.375rem;
  }
}

.search-form__input {
  display: block;
  box-shadow: var(--primary-box-shadow);
  border: none;
  border-radius: 0.9375rem;
  background: url("../svg/icon-search.svg") no-repeat top 1.25rem left 1rem/1.25rem;
  background-color: var(--search-form-input-background-color);
  padding: 1.125rem 6.125rem 1.125rem 2.8125rem;
  width: 100%;
  height: 3.75rem;
  color: var(--search-form-input-color);
}
@media (prefers-reduced-motion: no-preference) {
  .search-form__input {
    transition: background-color var(--primary-transition),
      color var(--primary-transition);
  }
}
@media screen and (min-width: 37.5em) {
  .search-form__input {
    background-position: top 1.4375rem left 2rem;
    background-size: 1.5rem;
    padding: 1.375rem 7.875rem 1.375rem 5rem;
    height: 4.375rem;
    font-size: 1.125rem;
  }
}

.search-form__placeholder {
  position: absolute;
  top: 1.25rem;
  left: 2.8125rem;
}
@media (prefers-reduced-motion: no-preference) {
  .search-form__placeholder {
    transition: top var(--primary-transition), left var(--primary-transition);
  }
}
@media screen and (min-width: 37.5em) {
  .search-form__placeholder {
    top: 1.375rem;
    left: 5rem;
    font-size: 1.125rem;
  }
}

.search-form__input:not(:placeholder-shown) ~ .search-form__placeholder {
  top: -1.5625rem;
  left: 2.1875rem;
}
@media screen and (min-width: 37.5em) {
  .search-form__input:not(:placeholder-shown) ~ .search-form__placeholder {
    top: -1.875rem;
  }
}

.search-form__button {
  display: inline-block;
  position: absolute;
  top: 0.4375rem;
  right: 0.4375rem;
  cursor: pointer;
  border: none;
  border-radius: 0.625rem;
  background-color: var(--blue);
  padding: 0.8125rem 1.125rem;
  color: var(--white);
  font-weight: 700;
}
.search-form__button:hover,
.search-form__button:active {
  background-color: hsl(212deg, 100%, 69%);
}
@media (prefers-reduced-motion: no-preference) {
  .search-form__button {
    transition: background-color var(--primary-transition);
  }
}
@media screen and (min-width: 37.5em) {
  .search-form__button {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
  }
}

.search-form__error {
  position: absolute;
  top: 4.0625rem;
  right: 0;
  color: hsl(0deg, 91%, 62%);
  font-weight: 700;
}
@media screen and (min-width: 37.5em) {
  .search-form__error {
    top: 4.625rem;
  }
}

.result {
  display: grid;
  grid-template-columns: 4.375rem 1fr;
  grid-template-areas: "avatar person" "bio bio" "statistic statistic" "details details";
  column-gap: 1.25rem;
  row-gap: 1.5625rem;
  box-shadow: var(--primary-box-shadow);
  border-radius: 0.9375rem;
  background-color: var(--result-background-color);
  padding: 2rem 1.5rem;
}
@media (prefers-reduced-motion: no-preference) {
  .result {
    transition: background-color var(--primary-transition);
  }
}
@media screen and (min-width: 37.5em) {
  .result {
    grid-template-columns: 7.5rem 1fr;
    column-gap: 2.5rem;
    row-gap: 1.875rem;
    padding: 2.5rem;
  }
}
@media screen and (min-width: 53.125em) {
  .result {
    grid-template-rows: repeat(auto-fill, minmax(3.75rem, 1fr));
    grid-template-columns: 7.5rem repeat(2, 1fr);
    grid-template-areas: "avatar person person" "avatar bio bio" ". statistic statistic" ". details details";
    align-items: flex-start;
    padding: 3rem;
  }
}

.result__avatar {
  grid-area: avatar;
  border-radius: 50%;
  width: 4.375rem;
  height: 4.375rem;
}
@media screen and (min-width: 37.5em) {
  .result__avatar {
    width: 7.5rem;
    height: 7.5rem;
  }
}

.result__person {
  display: flex;
  grid-area: person;
  flex-direction: column;
  justify-content: center;
}
@media screen and (min-width: 53.125em) {
  .result__person {
    flex-direction: row;
    justify-content: space-between;
  }
}

.result__name {
  color: var(--result-name-color);
  font-size: clamp(1rem, -0.04rem + 4.44vw, 1.63rem);
}

.result__username {
  color: var(--blue);
  text-decoration: none;
}
.result__username:hover,
.result__username:active {
  text-decoration: underline;
}

.result__bio {
  grid-area: bio;
}

.result__statistic {
  display: flex;
  grid-area: statistic;
  justify-content: space-between;
  align-items: center;
  gap: 0.3125rem;
  border-radius: 0.625rem;
  background-color: var(--result-statistic-background-color);
  padding: 1.1875rem;
  text-align: center;
}
@media (prefers-reduced-motion: no-preference) {
  .result__statistic {
    transition: background-color var(--primary-transition);
  }
}
@media screen and (min-width: 37.5em) {
  .result__statistic {
    padding: 1rem 6rem 1rem 2rem;
    text-align: left;
  }
}

.result__category {
  font-size: clamp(0.75rem, 0.65rem + 0.44vw, 0.81rem);
}

.result__number {
  display: block;
  margin-top: 0.5rem;
  color: var(--result-number-color);
  font-weight: 700;
  font-size: clamp(1rem, 0.38rem + 2.67vw, 1.38rem);
}

.result__details {
  grid-area: details;
}
@media screen and (min-width: 37.5em) {
  .result__details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas: "location twitter" "website company";
    gap: 1rem 2.5rem;
  }
}

.result__details .result__item {
  padding-left: 1.875rem;
  word-break: break-word;
}

.result__details .result__item:first-child {
  grid-area: location;
}

.result__details .result__item:nth-child(2) {
  grid-area: website;
}

.result__details .result__item:nth-child(3) {
  grid-area: twitter;
}

.result__details .result__item:last-child {
  grid-area: company;
}

.result__icon {
  float: left;
  margin-top: 0.25rem;
  margin-left: -1.875rem;
}

.result__details .result__item:not(:first-child) {
  margin-top: 1rem;
}
@media screen and (min-width: 37.5em) {
  .result__details .result__item:not(:first-child) {
    margin-top: 0;
  }
}

.result__link {
  color: var(--link-color);
  text-decoration: none;
}
.result__link:hover,
.result__link:active {
  text-decoration: underline;
}

.is-not-available {
  opacity: 0.5;
  cursor: not-allowed;
  text-decoration: none;
}

.is-not-available .result__link {
  cursor: inherit;
  text-decoration: inherit;
}

.header__home {
  color: var(--header-logo-color);
}

.header .container {
  display: flex;
  justify-content: space-between;
}

.attribution .container {
  margin-top: 2.1875rem;
  box-shadow: var(--primary-box-shadow);
  border-radius: 0.9375rem;
  background-color: var(--result-background-color);
  padding: 1.25rem;
  text-align: center;
}

.attribution__link {
  color: var(--link-color);
  text-underline-offset: 0.2em;
}