/*
    Author: Muhammad iar Hossain
    Date of creation: 8th December 2023
    Used Technology: HTML5, CSS3, Vanilla JS
    compatiable for all major web browser 
    Features: 
      => Play next / previous audio
      => Play random audio
      => Loop playlist / single song 
      => Play / pause audio 
      => Highlight playing song 
      => Get audio file dynamically
      => Forward and backward duration through progressbar
      => Keyboard navigation 
  */
:root {
  --clr: #d4d4d4;
  --bgClr: #e5dbb4;
  --darkClr: #3d4147;
  --lightClr: #3c2b4f;
  --black: #1d1d1e;
  --lime: #7aff17;
  --lightBlue: lightblue;
  --outlineClr: #3cdf57;
  --shadowClr: #0008;
  --activeClr: #605074;
  --darkHoverClr: #323232;
}
html {
  font-size: 54.5%;
}
* {
  margin: 0rem;
  padding: 0rem;
  box-sizing: border-box;
}
body {
  color: var(--clr);
  font-family: Tahoma;
  display: grid;
  place-items: center;
  min-height: 100vh;
  background: var(--bgClr);
  text-rendering: optimizelegibility;
}
.d-flex {
  display: flex;
}
.justify-between {
  justify-content: space-between;
}
.active figure {
  outline: 0.15rem solid var(--lime);
  outline-offset: 0.5em;
}
.active {
  color: var(--bgClr);
}
p {
  line-height: 1.6;
}
p,
span {
  font-size: 1.4rem;
  user-select: none;
}
ul {
  list-style: none;
}
span[class*="_btn"] {
  font-size: 3rem;
  cursor: pointer;
}
span[class*="_btn"]:hover {
  color: var(--outlineClr);
}
#playXl {
  font-size: 4.8rem;
}
#playXXl {
  font-size: 5.6rem;
}
img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
h2 {
  font-size: 1.8rem;
  margin: 0.8rem 0rem 3.2rem;
}
.kbd_shortcut_btn {
  cursor: pointer;
}
.keyboard_shortcut_pane {
  position: absolute;
  inset: -0.5rem;
  scale: 0;
  z-index: 5;
  display: grid;
  place-items: center;
  background: var(--shadowClr);
  border-radius: 3.2rem;
  backdrop-filter: blur(0.1rem);
  transition: all 0.3s ease-in-out;
}
.keyboard_shortcut_pane.show {
  scale: 1;
}
.content_wrapper {
  color: var(--black);
  padding: 2.2rem;
  width: calc(100% - 4rem);
  border-radius: 1rem;
  background: #fff;
}
.content_wrapper h3 {
  font-size: 1.8rem;
  font-weight: normal;
  margin-bottom: 3rem;
}
.content_wrapper p {
  font-weight: 600;
  margin-bottom: 1rem;
}
.content_wrapper li {
  font-size: 1.4rem;
  padding: 0.5rem 0;
  margin-bottom: 1rem;
  border-top: 0.1rem solid var(--clr);
}
.content_wrapper button {
  color: var(--lightClr);
  cursor: pointer;
  padding: 1rem 1.2rem;
  border-radius: 2rem;
  border: none;
  outline: none;
  background: transparent;
  transition: all 0.3s ease;
}
.content_wrapper button:hover,
.content_wrapper button:focus-visible {
  color: var(--clr);
  background: var(--lightClr);
}
nav {
  margin-bottom: 1.5rem;
}
.all_track_list,
.favorite_list {
  cursor: pointer;
}
.container {
  position: relative;
  width: 39rem;
  padding: 1.6rem;
  border-radius: 3.2rem;
  height: 66rem;
  background: var(--darkClr);
  border: 0.3rem solid;
  box-shadow: 0 0.1rem 1.5rem 0.2rem var(--shadowClr);
}
.audio_track_container,
.favorite_track_container {
  padding: 0.8rem;
  height: 43.3rem;
  border-radius: 1.5rem;
  overflow-y: scroll;
  background: var(--black);
}
.favorite_track_container {
  display: none;
}
::-webkit-scrollbar {
  width: 0rem;
}
.audio_track_item {
  gap: 1.6rem;
  cursor: pointer;
  margin: 0.8rem 0rem;
  padding-bottom: 0.8rem;
  align-items: center;
  transition: all 0.5s ease-in-out 0s;
}
.audio_track_item:hover {
  background: var(--darkHoverClr);
}
.audio_track_item:not(:last-child) {
  border-bottom: 0.1rem solid var(--darkClr);
}
.audio_track_item figure {
  width: 10rem;
  height: 7rem;
  overflow: hidden;
  border-radius: 0.2rem;
}
.track_label {
  width: 70%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.track_player_tray {
  position: absolute;
  bottom: 1.6rem;
  left: 0.8rem;
  right: 0.8rem;
  height: 8rem;
  border: 0.2rem solid var(--shadowClr);
  border-radius: 4rem;
  background: var(--lightClr);
  transition: all 0.5s ease-in-out 0s;
}
.track_player_tray .close_btn {
  width: 3.5rem;
  opacity: 0;
  font-size: 4rem;
  cursor: pointer;
  margin: 0.5rem 0rem 0rem 0.5rem;
  color: var(--clr);
  transition: all 0.2s ease-in-out 0s;
}
.track_player_tray.expand {
  height: 53rem;
  border-radius: 2rem;
  background: var(--activeClr);
}
.track_player_tray figure {
  position: absolute;
  top: 0.8rem;
  left: 0.8rem;
  width: 6rem;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  overflow: hidden;
  z-index: 4;
  cursor: pointer;
  background: var(--bgClr);
  transition: all 0.2s ease-in-out 0s;
}
.track_player_tray.expand figure {
  top: 5%;
  left: 50%;
  width: 15rem;
  outline-offset: 0.8rem;
  border: 0.2rem solid var(--lightBlue);
  outline: 0.3rem solid var(--outlineClr);
  transform: translateX(-50%);
  transition-delay: 0.07s;
}
.track_title,
.audio_timeline {
  position: absolute;
  left: 50%;
  opacity: 0;
  transition: all 0.2s ease-in-out 0s;
  transform: translateX(-50%);
}
.track_title {
  top: 39%;
  width: 32rem;
}
.audio_timeline {
  top: 75%;
  pointer-events: none;
  transform: translate(-50%, -50%);
}
.track_player_tray.expand .audio_timeline {
  pointer-events: all;
}
.audio_timeline_track {
  position: relative;
  height: 0.5rem;
  width: 32rem;
  cursor: pointer;
  border-radius: 0.25rem;
  background: var(--darkClr);
}
.audio_timeline_lebel {
  position: absolute;
  top: 0rem;
  left: 0rem;
  width: calc(var(--audioTimeLineWidth, 30%) * 1%);
  height: 100%;
  border-radius: inherit;
  background: var(--lightBlue);
}
.audio_timeline_lebel::before {
  content: "";
  position: absolute;
  top: -0.4rem;
  right: -0.4rem;
  width: 1.3rem;
  height: 1.3rem;
  border-radius: 50%;
  transition: all 0.3s ease-in-out 0s;
  background: var(--bgClr);
}
.audio_duration {
  margin-top: 0.5rem;
}
#favorite_list{
  cursor: pointer;
}
#fav_icon {
  text-align: center;
  cursor: pointer;
}
.audio_controll_btn {
  gap: 1.6rem;
  margin-top: 4rem;
  align-items: center;
  justify-content: center;
}
.audio_controll_btn span {
  transition: all 0.5s ease-in-out 0s;
}
.audio_controll_btn span.random_btn {
  outline-offset: 0.5rem;
  outline: transparent solid 0.3rem;
  border-radius: 50%;
}
.audio_controll_btn span.active {
  color: var(--lime);
}
.track_player_tray.expand .close_btn,
.track_player_tray.expand .track_title,
.track_player_tray.expand .audio_timeline {
  opacity: 1;
  transition-delay: 0.4s;
}
.bottom_player_bar {
  position: absolute;
  bottom: 1.4rem;
  left: 0.8rem;
  right: 0.8rem;
  align-items: center;
  justify-content: space-between;
  transition: opacity 0.3s ease-in-out 0s;
}
.track_player_tray.expand .bottom_player_bar {
  opacity: 0;
  pointer-events: none;
}
.track_controller {
  width: 15rem;
  align-items: center;
  justify-content: space-evenly;
}
.track_controller button {
  font-size: 1.7rem;
}
.bottom_player_bar marquee {
  width: 20rem;
  height: 3.2rem;
  display: grid;
  place-items: center;
  margin-left: 0.5rem;
  cursor: pointer;
}