/* ########################################################### */
/* general */
/* ########################################################### */

:root {
  &[theme='light'] {
    --White--Dark-Mode-Text---Light-Mode-Elements: hsl(0, 0%, 100%);
    --Light-Gray-Light-Mode-Background: hsl(0, 0%, 98%);
    --hover-background-color: hsl(0, 0%, 92%);
    --Dark-Gray--Light-Mode-Input: hsl(0, 0%, 52%);
    --Dark-Blue--Dark-Mode-Elements: #0f1011;
    --Very-Dark-Blue--Dark-Mode-Background: #16181a;
    --Very-Dark-Blue--Light-Mode-Text: hsl(200, 15%, 8%);
    --shadow-light-dark: rgba(0, 0, 0, 0.1);
  }

  &[theme='dark'] {
    --White--Dark-Mode-Text---Light-Mode-Elements: #121314;
    --Light-Gray-Light-Mode-Background: #16181a;
    --hover-background-color: #333333;
    --Dark-Gray--Light-Mode-Input: hsl(0, 0%, 100%);
    --Dark-Blue--Dark-Mode-Elements: hsl(0, 0%, 52%);
    --Very-Dark-Blue--Dark-Mode-Background: hsl(0, 0%, 98%);
    --Very-Dark-Blue--Light-Mode-Text: hsl(0, 0%, 90%);
    --shadow-light-dark: rgba(45, 45, 45, 0.15);
  }

  --transition-darkMode: background-color 0.6s ease-out;
}

html {
  font-size: 62.5%;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: var(--transition-darkMode);
}

body {
  font-family: Nunito Sans;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
  background-color: var(--Light-Gray-Light-Mode-Background);
  margin-bottom: 2rem;
}

.container {
  width: 125rem;
  margin: 0 auto;
}

.padding-horizontally {
  padding: 0 7rem;
}

.hidden-opacity {
  opacity: 0;
  margin-top: -120px;
}

.error {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  font-size: 1.4em;
  position: absolute;
  top: 35%;
  transition: margin-top 0.6s ease-out;
  right: 50%;
  transform: translateX(50%);
  z-index: -100;
}

.error-text {
  display: inline;
  font-weight: 700;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  box-shadow: inset 0 0 1px grey;
}

::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--Dark-Gray--Light-Mode-Input);
}

/* ########################################################### */
/* HEADER */
/* ########################################################### */

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.8rem 7rem;
  box-shadow: 0 0 8px var(--shadow-light-dark);
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  position: sticky;
  top: 0;
  z-index: 10;
}

h1 {
  font-weight: 800;
  font-size: 2.4em;
}

button {
  border: none;
  cursor: pointer;
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  font-family: Nunito Sans;
}

.dark-mode-button {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.6em;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
}

.dark-mode-text {
  font-weight: 600;
  font-size: 1.2em;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
}

/* ########################################################### */
/* NAVIGATION */
/* ########################################################### */

.navigation {
  margin: 4.6rem 0;
  background-color: var(--Light-Gray-Light-Mode-Background);
}

.nav-element {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 3rem;
}

.search-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: 0 0 8px var(--shadow-light-dark);
  width: 42rem;
  height: 5.4em;
  padding-left: 1.8rem;
  border-radius: 4px;
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
}

.search-btn {
  cursor: default;
  display: flex;
  align-items: center;
}

.search-input {
  border: none;
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  font-family: Nunito Sans;
  color: var(--Dark-Gray--Light-Mode-Input);
  width: inherit;
  height: 100%;
  border-radius: 2px 6px 6px 2px;
  padding-left: 1rem;
  transition: var(--transition-darkMode), box-shadow 0.4s;
}
.search-input:focus {
  outline: none;
  box-shadow: inset 0 0 0 1px var(--Dark-Blue--Dark-Mode-Elements);
}

.search-input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.search-input::placeholder {
  color: var(--Dark-Gray--Light-Mode-Input);
}

.region-selector {
  font-size: 1.4rem;
  box-shadow: 0 0 8px var(--shadow-light-dark);
  display: grid;
  align-items: center;
  grid-template-columns: 6fr 1fr;
  gap: 2rem;
  padding: 0 1.8rem;
  height: 5.4rem;
  border-radius: 4px;
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  position: relative;
  cursor: pointer;
}

.region-options-container {
  position: absolute;
  top: 110%;
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  box-shadow: 0 0 8px var(--shadow-light-dark);
  list-style: none;
  width: 100%;
  padding: 0.8rem 0;
  transform-origin: top;
  scale: 1 0;

  left: 0;
  border-radius: 4px;
  transition: var(--transition-darkMode), scale 0.3s ease-out;
  z-index: 5;
  cursor: auto;
}

.drop-down-effect {
  scale: 1 1;
}

.region-filter-btn {
  height: 100%;
  display: flex;
  align-items: center;
}

.hidden {
  display: none !important;
}

.region-options {
  cursor: pointer;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
  font-family: Nunito Sans;
}

.region-options-btn {
  padding: 0.5rem 2rem;
  display: block;
  width: 100%;
  text-align: start;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
}

.region-options-btn:hover {
  background-color: var(--hover-background-color);
  transition: all 0.3s;
}

.icon {
  stroke: var(--Dark-Gray--Light-Mode-Input);
}

.icon-arrow {
  fill: var(--Dark-Gray--Light-Mode-Input);
  transition: transform 0.3s;
}

.rotate {
  transform: rotate(180deg);
}
/* ########################################################### */
/* MAIN */
/* ########################################################### */

main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(26rem, 1fr));
  gap: 5.6rem 5.6rem;
}

.country-card {
  display: inline-block;
  border-radius: 6px;
  box-shadow: 0 0 16px var(--shadow-light-dark);
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition-darkMode), scale 0.3s, box-shadow 0.3s;
  max-width: 32rem;
  height: 38rem;
  text-decoration: none;
}

.country-image {
  display: block;
  height: 16rem;
  width: 100%;
  box-shadow: 0 2px 10px var(--shadow-light-dark);
}

.country-info-container {
  padding: 2.2rem 2.4rem 4rem;
}

.country-card:hover {
  scale: 1.025;
  box-shadow: 0 0 32px var(--shadow-light-dark);
}

.country-card:active {
  scale: 0.99;
  box-shadow: 0 0 10px var(--shadow-light-dark);
}

.country-name {
  margin-bottom: 1.4rem;
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
}

.country-info {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--Very-Dark-Blue--Light-Mode-Text);
  font-size: 1.8rem;
}

.cards-info {
  font-weight: 300;
}

/* ########################################################### */
/* DETAILS SECTION */
/* ########################################################### */

.back-btn {
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  color: var(--Very-Dark-Blue--Light-Mode-Text);
  display: flex;
  align-items: center;
  gap: 1rem;
  border-radius: 4px;
  box-shadow: 0 0 6px var(--shadow-light-dark);
  padding: 0.2rem 2.8rem;
  margin-top: 4.2rem;
}

.back-btn:hover {
  background-color: var(--hover-background-color);
  transition: background-color 0.35s;
}

.back-paragraph {
  color: var(--Very-Dark-Blue--Light-Mode-Text);
  font-weight: 300;
}

.left-arrow--icon {
  font-size: 2.4rem;
}

.details-section-container {
  margin-top: 4.2rem;
}

.details-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  justify-items: start;
  gap: 10rem;
}

.big-country-image {
  width: clamp(56rem, 36vw, 76rem);
  max-height: 36rem;
  box-shadow: 0 8px 16px var(--shadow-light-dark);
}

div h2 {
  font-size: clamp(3.4rem, 2.5vw, 4.8rem);
}

.details-text-box {
  display: flex;
  margin-bottom: 4.2rem;
  flex-wrap: wrap;
  font-size: 1.6em;
}

.details-text-box div:last-child {
  max-width: 25rem;
}

.details-text-box div:first-child {
  margin-right: 8rem;
}

h2 {
  font-weight: 800;
  font-size: 2.5em;
  margin-bottom: 1.5rem;
}

.info-section {
  display: flex;
  flex-direction: column;
  padding-top: 3.2rem;
}

.info-headers {
  margin-bottom: 0.8rem;
  font-size: clamp(1.6rem, 0.1vw, 2.4rem);
}

.sub-headers {
  display: inline;
  font-weight: 600;
}

span {
  font-weight: 300;
}

.border-element-container {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 1.4rem;
}

.neighbour-countries-container {
  max-width: 100%;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.borders-btn {
  background-color: var(--White--Dark-Mode-Text---Light-Mode-Elements);
  color: var(--Very-Dark-Blue--Light-Mode-Text);
  text-decoration: none;
  text-align: center;
  font-weight: 300;
  font-size: 0.8em;
  width: 10rem;
  padding: 4px 0;
  border-radius: 2px;
  box-shadow: 0 0 6px var(--shadow-light-dark);
  transition: var(--transition-darkMode), transform 0.35s;
}

.borders-btn:hover {
  transform: translateY(-2.6px);
  transition: all 0.35s;
  background-color: var(--hover-background-color);
}

.borders-btn:active {
  transform: translateY(-1px);
}

/* *********************************************** */
/* loader */
/* *********************************************** */
.preview-section {
  position: relative;
}

.loader {
  width: 4.8rem;
  height: 4.8rem;
  border-radius: 50%;
  border: 0.6rem solid var(--hover-background-color);
  border-top: 0.6rem solid var(--Dark-Gray--Light-Mode-Input);
  animation: spin 1s infinite linear;
  position: fixed;
  inset: 50% 0 0 50%;
  translate: -50% -50%;
}

@keyframes spin {
  0% {
    rotate: 0;
  }
  100% {
    rotate: 1turn;
  }
}

/* *********************************************** */
/* 1088px */
/* *********************************************** */

@media (width <= 68em) {
  .details-section {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 1.2rem;
    margin-bottom: 4.8rem;
  }
}

/* *********************************************** */
/* 800px */
/* *********************************************** */

@media (max-width: 50em) {
  header {
    padding: 2.4rem 2.4rem;
    font-size: 0.8rem;
  }
  .padding-horizontally {
    padding: 0 3.2rem;
  }

  .details-section-container {
    margin-top: 6.4rem;
  }

  .info-headers {
    margin-bottom: 1.6rem;
  }

  .details-section {
    gap: 4.8rem;
    margin-bottom: 4.8rem;
  }

  .big-country-image {
    width: 100%;
  }

  .info-section {
    padding: 0;
    width: 100%;
  }
  .details-text-box {
    margin-bottom: 3.2rem;
  }
}

/* *********************************************** */
/* 704px */
/* *********************************************** */
@media (width <= 44em) {
  main {
    justify-items: center;
    gap: 4.2rem;
  }

  .country-card {
    width: 100%;
    height: 40rem;
  }

  .country-image {
    height: 17rem;
  }

  .country-name {
    font-size: 2.6rem;
    margin-bottom: 1.8rem;
  }

  .country-info {
    margin-bottom: 0.9rem;
    font-size: 1.8rem;
  }

  .navigation {
    margin: 3.2rem 0;
  }

  .nav-element {
    gap: 3.2rem;
  }

  .search-bar {
    width: clamp(12rem, 100%, 42rem);
  }

  div h2 {
    font-size: 2.8rem;
    margin-bottom: 2.8rem;
  }

  .info-headers {
    margin-bottom: 1.6rem;
    font-size: 1.8rem;
  }
  .first-text-container {
    margin-bottom: 3.2rem;
  }
}