:root {
  --transparent: transparent;
  --white: #fff;
  --black: #000;
  --black-1: #111;
  --black-2: #222;
  --black-3: #333;
  --black-4: #444;
  --base-font-color: #b3b3b3;
  --progress-bar-size: 50rem;
  --volume-bar-size: 8rem;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 62.5%;
}

body {
  margin: 0;
  font-family: Montserrat;
  background-color: var(--black);
  color: var(--base-font-color);
}

h1 {
  grid-area: title;
  font-size: 1.6rem;
  text-align: start;
}

h2 {
  grid-area: subtitle;
  font-size: 1.3rem;
  color: var(--base-font-color);
  text-align: start;
}

.mb-4 {
  margin-bottom: 4rem !important;
}

.mb-3 {
  margin-bottom: 3rem !important;
}

.mb-2 {
  margin-bottom: 2rem !important;
}

.mb-1 {
  margin-bottom: 1rem !important;
}

.mr-1 {
  margin-right: 1rem !important;
}

.desktop-view {
  display: initial;
}

.mobile-view {
  display: none;
}

.transparent-button {
  display: flex;
  background-color: var(--transparent);
  border: 0.5px solid var(--base-font-color);
  border-radius: 10rem;
  color: var(--white);
  cursor: pointer;
  width: auto;
  padding: 0.5rem 1.3rem;
  margin: 0;
}

.transparent-button span {
  font-size: 1.2rem;
  font-weight: 700;
}

.rounded-button {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--black);
  border-radius: 50%;
  color: var(--white);
  height: 3.6rem;
  width: 3.6rem;
  margin: 0 0.8rem;
}

.rounded-button:not(.profile) > img {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
}

.rounded-button > img {
  width: 3.2rem;
  height: 3.2rem;
  border-radius: 50%;
}

.button {
  display: flex;
  gap: 1rem;
  background-color: var(--black);
  border-radius: 10rem;
  padding: 1rem 2rem;
  color: var(--white);
  height: 3.6rem;
  width: 100%;
  justify-content: center;
  align-items: center;
  margin: 0.8rem;
  cursor: pointer;
}

.pointer {
  cursor: pointer;
}

.xs4 {
  width: 0.8rem !important;
  height: 0.8rem !important;
}

.xs3 {
  width: 1rem;
  height: 1rem;
}

.xs2 {
  width: 1.2rem;
  height: 1.2rem;
}

.xs {
  width: 1.6rem;
  height: 1.6rem;
}

.sm {
  width: 2.4rem;
  height: 2.4rem;
}

.md {
  width: 4rem;
  height: 4rem;
}

.lg {
  width: 6rem;
  height: 6rem;
}

.xl {
  width: 8rem;
  height: 8rem;
}

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

.column {
  flex-direction: column;
}

.opacity-05 {
  opacity: 0.5;
}

.space-bewteen {
  justify-content: space-between;
}

.grow {
  flex-grow: 1;
}

.justify-self-start {
  justify-self: start;
}

.justify-self-end {
  justify-self: flex-end;
}

/**********************************************/
/*                 wrapper                    */
/**********************************************/
.page-wrapper {
  display: grid;
  height: 100vh;
  gap: 1vh;
  grid-template-areas:
    "left-sidebar main-view right-sidebar"
    "now-playing-bar now-playing-bar now-playing-bar";
  position: relative;
  grid-template-columns: 3fr 8fr 3fr;
  grid-template-rows: 89vh 10vh;
}

.no-right-sidebar {
  grid-template-areas:
    "left-sidebar main-view"
    "now-playing-bar now-playing-bar";
  grid-template-columns: 3fr 8fr;
}

/**********************************************/
/*               left-sidebar                 */
/**********************************************/
.left-sidebar {
  grid-area: left-sidebar;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.left-sidebar > div {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-top: 1rem;
  background-color: var(--black-1);
  color: white;
  font-size: 1.6rem;
  border-radius: 1rem;
  padding: 1rem 1rem;
}

.menu-item {
  padding: 0.8rem 1rem;
  width: 100%;
  text-align: center;
  cursor: pointer;
  display: flex;
}

.menu-item > img {
  width: 3.2rem;
  height: 3.2rem;
  margin-right: 1rem;
}

.albums-section {
  flex-grow: 1;
  align-content: start;
  height: 50%;
}

.albums-container {
  display: flex;
  justify-content: start;
  flex-direction: column;
  gap: 0.8rem;
  margin-top: 1rem;
  overflow-y: auto;
  scrollbar-width: none;
}

.album-item {
  display: grid;
  grid-template-areas: "cover title mark" "cover subtitle mark";
}

.album-item > img,
.album-item-without-image > img {
  grid-area: cover;
  width: 4.8rem;
  height: 4.8rem;
  margin-right: 1rem;
}

.album-item .green-mark,
.album-item-without-image .green-mark {
  grid-area: mark;
  width: 1.6rem;
  height: 1.6rem;
  place-self: center;
  margin-left: 1rem;
}

/**********************************************/
/*               main-content                 */
/**********************************************/
.main-content {
  grid-area: main-view;
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-top: 1rem;
  background-color: var(--black-1);
  color: white;
  font-size: 1.6rem;
  border-radius: 1rem;
  padding: 1rem 1rem;
  overflow: hidden;
}

.top-bar-box {
  width: 100%;
  display: flex;
  flex-direction: row;
  margin-bottom: 1rem;
  justify-content: space-between;
}

.grouped-content-wrapper {
  display: flex;
  justify-content: start;
  flex-direction: column;
  gap: 0.8rem;
  margin-top: 1rem;
  overflow-y: auto;
  scrollbar-width: none;
}

.main-content-group {
  padding: 0.8rem 1rem;
  width: 100%;
  text-align: center;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.main-content-group > div:nth-child(1) {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: 1fr 1fr;
  gap: 0.5rem;
}

.main-content-group > div:nth-child(1) h1 {
  font-size: 1.4rem;
}

.main-content-group > div:not(:nth-child(1)) {
  margin-top: 6.5rem;
  display: flex;
  flex-direction: column;
}

.main-content-group > div:not(:nth-child(1)) h1 {
  font-size: 2.4rem;
  font-weight: 800;
}

.main-content-group .menu-item {
  background-color: var(--black-2);
  border-radius: 0.5rem;
}

.album-cards-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}

.album-card {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.album-card h1 {
  font-size: 1.5rem !important;
}

.album-card > img {
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
}

/**********************************************/
/*              now-playing                   */
/**********************************************/
.now-playing-bar {
  grid-area: now-playing-bar;
  background-color: var(--black-1);
  display: flex;
  align-items: center;
}

.now-playing-wrapper {
  flex-grow: 1;
  display: flex;
  justify-content: space-between;
}

.now-playing-wrapper > div {
  padding: 1rem;
}

.now-playing-wrapper h1 {
  color: var(--white);
}

.play-panel {
  display: flex;
  row-gap: 1rem;
  flex-direction: column;
}

.play-panel .buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  column-gap: 2.4rem;
}

.play-panel .buttons > img {
  width: 2rem;
  height: 2rem;
  opacity: 0.8;
}

.play-panel .buttons > img:nth-child(3) {
  width: 3.4rem;
  height: 3.4rem;
  opacity: 1;
}

.playing {
  display: flex;
  align-items: center;
  column-gap: 1rem;
}

.playing span {
  font-size: 1.2rem;
}

.progress-bar {
  background-color: var(--base-font-color);
  border-radius: 5px;
  min-width: var(--progress-bar-size);
  height: 0.5rem;
}

.volume-bar {
    background-color: var(--base-font-color);
    border-radius: 5px;
    min-width: var(--volume-bar-size);
    height: 0.5rem;
  }

.progress-bar-completed {
  background-color: var(--white);
  border-radius: 5px;
  height: 100%;
}

.now-playing-bar .buttons-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  /* --progress-bar-size: 8rem; */
}

/**********************************************/
/*               right side bar               */
/**********************************************/
.right-sidebar {
  grid-area: right-sidebar;
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.right-sidebar-wrapper {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  margin-top: 1rem;
  background-color: var(--black-1);
  color: white;
  font-size: 1.6rem;
  border-radius: 1rem;
  padding: 2rem 2rem;
  gap: 0.5rem;
}

.right-sidebar-wrapper h1 {
  /* margin-bottom: 1rem; */
  font-size: 1.5rem;
}

.buttons-wrapper img {
  width: 2.4rem;
  height: 2.4rem;
  margin-right: 1rem;
}

.buttons-wrapper img:hover {
  cursor: pointer;
}

.cover-image {
  width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
}

.right-sidebar-wrapper .album-item-without-image h1 {
  font-size: 2rem;
}

.album-item-without-image {
  display: grid;
  grid-template-areas: "title mark" "subtitle mark";
  margin-bottom: 1.5rem;
}

.album-item-without-image .green-mark {
  grid-area: mark;
  width: 2.1rem;
  height: 2.1rem;
  place-self: center;
  margin-left: 1rem;
}

.artist-information-panel {
  display: flex;
  flex-direction: column;
  background-color: var(--black-2);
  gap: 0.5rem;
  border-radius: 0.4rem;
  padding: 1rem;
  margin-bottom: 1rem;
}

.artist-information-panel h1 {
  font-size: 1.4rem;
  font-weight: 800;
}

.artist-information-panel h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
}

.artist-information-panel h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--base-font-color);
}

.artist-information-panel h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--base-font-color);
}

.artist-information-panel p {
  font-size: 1.2rem;
  color: var(--base-font-color);
}

.artist-information-panel > img {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
}

.credit-item {
  margin-bottom: 1.5rem;
}

.credit-item div:nth-child(1) {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

@media screen and (max-width: 1200px) {
  * {
    --progress-bar-size: 40rem;
  }
}

@media screen and (max-width: 1100px) {
  * {
    --progress-bar-size: 30rem;
  }
}

@media screen and (max-width: 1000px) {
    * {
        --progress-bar-size: 20rem;
    }
}

@media screen and (max-width: 950px) {
    .desktop-view {
        display: none;
    }

    .mobile-view {
        display: initial;
    }
}