:root {

    /**
     * colors
     */
  
    --eerie-black_a95: hsla(204, 9%, 11%, 0.95);
    --eerie-black_a50: hsla(204, 9%, 11%, 0.5);
    --eerie-black: hsl(204, 9%, 11%);
    --gainsboro: hsl(225, 7%, 89%);
    --charcoal: hsl(203, 9%, 28%);
    --silver-sand: hsl(208, 12%, 78%);
    --light-sky-blue: hsl(200, 100%, 73%);
    --prussian-blue: hsl(196, 100%, 14%);
    --black: hsl(0, 0%, 0%);
    --black_a50: hsla(0, 0%, 0%, 0.5);
    --black_a20: hsla(0, 0%, 0%, 0.2);
    --light-sky-blue_a8: hsla(200, 100%, 73%, 0.08);
    --light-sky-blue_a12: hsla(200, 100%, 73%, 0.12);
    --silver-sand_a8: hsla(208, 12%, 78%, 0.08);
    --silver-sand_a12: hsla(208, 12%, 78%, 0.12);
    
    --background: var(--eerie-black);
    --background-opacity: var(--eerie-black_a95);
    --on-background: var(--gainsboro);
    --surface-variant: var(--charcoal);
    --on-surface-variant: var(--silver-sand);
    --on-surface-variant-hover: var(--light-sky-blue_a8);
    --on-surface-variant-focus: var(--light-sky-blue_a12);
    --primary: var(--light-sky-blue);
    --on-primary: var(--prussian-blue);
  
    /**
     * gradient
     */
  
    --gradient: linear-gradient(180deg, hsla(204, 9%, 11%, 0.90) 60%, transparent 120%);
  
    /**
     * typography
     */
  
    --ff-inter: 'Inter', sans-serif;
  
    --headline-sm: 2.4rem;
    --title-lg: 2.2rem;
    --label-lg: 1.4rem;
    --label-md: 1.2rem;
    
    --fw-400: 400;
    --fw-500: 500;
  
    /**
     * box shadow
     */
  
    --shadow-1: 0 1px 4px 1px var(--black_a20);
    --shadow-2: 0 1px 4px 1px var(--black_a50);
  
    /**
     * border radius
     */
  
    --radius-24: 24px;
    --radius-16: 16px;
    --radius-12: 12px;
    --radius-pill: 100px;
    --radius-circle: 50%;
  
    /**
     * transition
     */
  
    --transition-1: 200ms cubic-bezier(0.2, 0, 0, 1);
    --transition-2: 300ms cubic-bezier(0.2, 0, 0, 1);
  
  }
  
  /*-----------------------------------*\
    #RESET
  \*-----------------------------------*/
  
  *,
  *::before,
  *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  li { list-style: none; }
  
  a,
  img,
  span,
  input,
  button { display: block; }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  img { height: auto; }
  
  input,
  button {
    background: none;
    border: none;
    font: inherit;
  }
  
  input { width: 100%; }
  
  button { cursor: pointer; }
  
  html {
    font-family: var(--ff-inter);
    font-size: 10px;
    scroll-behavior: smooth;
  }
  
  body {
    background-color: var(--black);
    color: var(--on-background);
    font-size: 1.6rem;
    line-height: 1.5;
    min-height: 100vh;
    min-width: 250px;
    background-image: url("./images/poster-1.jpg");
    background-size: 150%;
    background-repeat: no-repeat;
    background-position: top;
    overflow: overlay;
  }
  
  body.modalActive { overflow: hidden; }
  
  ::-webkit-scrollbar { width: 8px; }
  
  ::-webkit-scrollbar-track { background: transparent; }
  
  ::-webkit-scrollbar-thumb {
    background-color: transparent;
    border-radius: var(--radius-pill);
  }
  
  body:hover::-webkit-scrollbar-thumb { background-color: var(--surface-variant); }
  

  /*-----------------------------------*\
    #REUSED STYLE
  \*-----------------------------------*/
  
  .material-symbols-rounded {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' -25, 'opsz' 24;
    width: 1em;
    height: 1em;
    overflow: hidden;
    user-select: none;
  }
  
  .wrapper {
    display: flex;
    align-items: center;
  }
  
  .title-lg {
    font-size: var(--title-lg);
    font-weight: var(--fw-400);
  }
  
  .btn-icon {
    color: var(--on-surface-variant);
    width: 40px;
    height: 40px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-circle);
  }
  
  .btn-icon:hover { background-color: var(--on-surface-variant-hover); }
  
  .btn-icon:is(:focus, :focus-visible) {
    background-color: var(--on-surface-variant-focus);
  }
  
  .img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .headline-sm {
    font-size: var(--headline-sm);
    font-weight: var(--fw-400);
  }
  
  .label-lg,
  .label-md { font-weight: var(--fw-500); }
  
  .label-lg {
    font-size: var(--label-lg);
    letter-spacing: 0.1px;
  }
  
  .label-md {
    font-size: var(--label-md);
    letter-spacing: 0.5px;
  }
  
  
  /*-----------------------------------*\
    #TOP APP BAR
  \*-----------------------------------*/
  
  .top-bar {
    position: fixed;
    top: 0;
    left: 0;
    background-color: var(--background-opacity);
    /* background-color: black; */
    min-width: 250px;
    width: 100%;
    height: 64px;
    padding-inline: 16px;
    justify-content: space-between;
    backdrop-filter: blur(50px);
    box-shadow: var(--shadow-1);
    z-index: 2;
  }
  
  .logo { gap: 12px; }

  /*-----------------------------------*\
    #PLAYER
  \*-----------------------------------*/
  
  .volume { display: none; }
  
  .player {
    --padding: 24px;
    background-image: var(--gradient);
    padding: var(--padding);
    padding-block-start: calc(64px + var(--padding));
    min-height: 100vh;
    display: flex;
    text-align: center;
    backdrop-filter: blur(30px);
    overflow: hidden;
  }
  
  .player .container {
    width: 100%;
    display: grid;
    grid-template-rows: 1fr max-content;
    gap: 24px;
  }
  
  .music-banner {
    aspect-ratio: 1 / 1;
    background-color: var(--surface-variant);
    max-width: 400px;
    margin-inline: auto;
    align-self: center;
    overflow: hidden;
    border-radius: var(--radius-24);
  }
  
  .label-wrapper {
    justify-content: center;
    opacity: 0.8;
    margin-block: 8px 4px;
  }
  
  .label-wrapper span:first-child::after {
    content: "|";
    display: inline-block;
    margin-inline: 4px;
  }
  
  .artist {
    opacity: 0.6;
    margin-block-end: 36px;
  }
  
  .seek-control { margin-block-end: 20px; }
  
  .range-wrapper { position: relative; }
  
  .range {
    appearance: none;
    cursor: pointer;
  }
  
  .range::-webkit-slider-runnable-track {
    appearance: none;
    background-color: var(--surface-variant);
    height: 6px;
    width: 100%;
    border-radius: var(--radius-pill);
  }
  
  .range-fill {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 6px;
    background-color: var(--primary);
    border-radius: var(--radius-pill);
    pointer-events: none;
  }
  
  .range::-webkit-slider-thumb {
    appearance: none;
    background-color: var(--primary);
    width: 16px;
    height: 16px;
    margin-block-start: -5px;
    border-radius: var(--radius-pill);
    transition: var(--transition-1);
  }
  
  .range::-webkit-slider-thumb:hover {
    box-shadow: 0 0 0 12px var(--on-surface-variant-hover);
  }
  
  .range::-webkit-slider-thumb:is(:focus, :focus-visible) {
    box-shadow: 0 0 0 12px var(--on-surface-variant-focus);
  }
  
  .duration-label {
    justify-content: space-between;
    margin-block-start: 12px;
  }
  
  .player-control { justify-content: space-evenly; }
  
  .player-control .toggle.active { color: var(--primary); }
  
  .player-control .play {
    background-color: var(--surface-variant);
    color: var(--primary);
  }
  
  .player-control .play.active {
    background-color: var(--primary);
    color: var(--on-primary);
  }
  
  .player-control .btn-icon.active .default-icon,
  .player-control .btn-icon .active-icon { display: none; }
  
  .player-control .btn-icon .default-icon,
  .player-control .btn-icon.active .active-icon { display: block; }
  
  
  /*-----------------------------------*\
    #PLAYLIST
  \*-----------------------------------*/
  
  .playlist {
    position: fixed;
    top: 0;
    right: -180px;
    width: 180px;
    height: 100vh;
    background-color: var(--background);
    padding: 28px;
    border-top-left-radius: var(--radius-16);
    border-bottom-left-radius: var(--radius-16);
    box-shadow: var(--shadow-2);
    overflow-y: overlay;
    visibility: hidden;
    transition: var(--transition-2);
    z-index: 4;
  }
  
  .playlist:hover::-webkit-scrollbar-thumb { background-color: var(--surface-variant); }
  
  .playlist.active {
    transform: translateX(-180px);
    visibility: visible;
  }
  
  .music-list {
    display: grid;
    gap: 20px;
  }
  
  .music-item {
    position: relative;
    border-radius: var(--radius-12);
    background-color: var(--surface-variant);
    overflow: hidden;
  }
  
  .music-item .item-icon {
    position: absolute;
    inset: 0;
    background-color: var(--eerie-black_a50);
    display: grid;
    place-items: center;
    opacity: 0;
  }
  
  .music-item.playing .item-icon { opacity: 1; }
  
  .music-item .item-icon .material-symbols-rounded {
    color: var(--primary);
    font-size: 3rem;
  }
  
  .music-item:is(:hover, :focus-visible, :active, .playing) {
    outline: 1px solid var(--primary);
  }
  
  .overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--black);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-2);
    z-index: 3;
  }
  
  .overlay.active {
    pointer-events: all;
    opacity: 0.5;
  }
  
  
  /*-----------------------------------*\
    #MEDIA QUERIES
  \*-----------------------------------*/
  
  /**
   * responsive for large than 575px screen
   */
  
  @media (min-width: 575px) {
  
    /**
     * RESET
     */
  
    body { background-size: 100%; }
  
  
  
    /**
     * PLAYER
     */
  
    .player { justify-content: center; }
  
    .player .container { max-width: 540px; }
  
  }
  
  
  /**
   * responsive for large than 992px screen
   */
  
  @media (min-width: 992px) {
  
    /**
     * CUSTOM PROPERTY
     */
  
    :root {
  
      /**
       * typography
       */
  
      --headline-sm: 4.2rem;
      --label-lg: 2.2rem;
  
    }
  
  
  
    /**
     * RESET
     */
  
    /* body {
      background-size: 40% 100%;
      background-position: left center;
    } */
  
    article { display: flex; }
  
  
  
    /**
     * REUSED STYLE
     */
  
    .btn-icon {
      width: 54px;
      height: 54px;
    }
  
    .btn-icon .material-symbols-rounded { font-size: 2.8rem; }
  
  
  
    /**
     * TOP APP BAR
     */
  
    .top-bar-actions { display: none; }
  
  
  
    /**
     * PLAYER
     */
  
    .player {
      --padding: 48px;
      text-align: left;
      flex-grow: 1;
      align-items: center;
      backdrop-filter: blur(100px);
    }
  
    .player .container {
      max-width: 1200px;
      grid-template-columns: 0.8fr 1fr;
      grid-template-rows: 1fr;
      gap: 48px;
      max-height: 500px;
      height: 100%;
    }
  
    .music-banner {
      aspect-ratio: unset;
      max-width: max-content;
      width: 100%;
      height: 100%;
    }
  
    .music-content {
      display: flex;
      flex-direction: column;
      padding-block-start: 48px;
      min-width: 100%;
    }
  
    .music-content :is(.headline-sm, .label-lg, .label-md) {
      max-width: 85%;
    }
  
    .label-wrapper {
      justify-content: flex-start;
      margin-block-end: 8px;
    }
  
    .artist { --label-md: 1.8rem; }
  
    .seek-control {
      margin-block-start: auto;
      display: grid;
      grid-template-columns: 1fr 150px;
      align-items: center;
      gap: 24px;
    }
  
    .volume {
      display: flex;
      align-items: center;
      gap: 4px;
      margin-block-start: -30px;
    }
  
    .volume .btn-icon { flex-shrink: 0; }
  
    .volume .range-fill { width: 100%; }
  
    .player-control {
      margin-inline-end: 174px;
      min-width: max-content;
      gap: 8px;
    }
  
  
  
    /**
     * PLAYLIST
     */
  
    .overlay { display: none; }
  
    .playlist {
      position: static;
      visibility: visible;
      border-radius: 0;
      box-shadow: none;
      flex-shrink: 0;
    }
  
    .playlist.active { transform: unset; }
  
    .music-item:is(:hover, :focus-visible, :active, .playing) {
      outline: 2px solid var(--primary);
    }
  
    .music-item .item-icon .material-symbols-rounded {
      font-size: 3.6rem;
    }
  
  
  /**
   * responsive for large than 1200px screen
   */
  
  @media (min-width: 1200px) {
  
    /**
     * PLAYLIST
     */
  
    .playlist {
      padding: 32px;
      width: 220px;
    }
  
    .music-list { gap: 28px; }
  
  }
}


/* ========================================= */