*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
}
html,
body {
  height: 100%;
}
body {
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  font-family: "Lato", sans-serif;
}
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}
input,
button,
textarea,
select {
  font: inherit;
}
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

a {
  text-decoration: none;
  color: inherit;
}

body {
  background: #e6e6e6;
  display: grid;
  justify-items: center;
  grid-template-rows: 2fr 4fr;
}

#intro {
  max-width: 90vw;
  margin-bottom: 3rem;
  align-content: center;
  justify-content: space-around;
  align-items: center;
  align-self: end;
  text-align: center;
  color: #393939;

  font-size: 1.2em;
}

#intro h1 {
  font-size: 1.4em;
  font-weight: 700;
}

#intro p {
  margin-top: 20px;
  font-size: 0.85em;
  color: #606060;
}
#tagline {
  font-size: 0.78em;
  margin-bottom: 0px;
  color: #606060;
}

#intro a {
  transition: all 0.3s;
  font-weight: 600;
  font-size: 0.9rem;
  color: #089aa1;
}

#intro a:hover {
  opacity: 0.8;
}

.player__wrapper {
  border-radius: 50px;
  background: #e6e6e6;
  box-shadow: 20px 20px 37px #cdcdcd, -20px -20px 37px #ffffff;
  padding: 4vh 5.5vw 4.5vh 5.5vw;
  max-width: 500px;
  align-self: start;
  margin: 0 2vw;
}

.ab__controls {
  display: grid;
  align-content: center;
  align-items: baseline;
  grid-template-columns: 1fr 1fr;
  justify-content: center;
  justify-items: center;
  width: 100%;
}

button {
  font-size: 1.3rem;
  text-transform: uppercase;
  border: none;
  color: #9b9b9b;
  width: 5rem;
  padding: 0.75rem;
  border-radius: 12px;
  background: #e6e6e6;
  box-shadow: 7px 7px 15px #cdcdcd, -7px -7px 15px #ffffff;
  cursor: pointer;
  transition: all ease-in-out 0.3s;
}

button:disabled {
  color: #c9c9c9;
  box-shadow: inset 7px 7px 15px #cdcdcd, inset -7px -7px 15px #ffffff;
  transition: all ease-in-out 0.3s;
}
button:disabled:hover {
  color: #c9c9c9;
  box-shadow: inset 5px 5px 15px #cdcdcd, inset -5px -5px 15px #ffffff;
}

button:hover {
  box-shadow: 4px 4px 15px #cdcdcd, -4px -4px 15px #ffffff;
}

#a__button {
  width: 8rem;
  border-radius: 12px 0 0 12px;
  justify-self: self-end;
}

#b__button {
  width: 8rem;
  border-radius: 0 12px 12px 0;
  justify-self: self-start;
}

#play__button {
  justify-self: self-end;
}

#stop__button {
  width: 5rem;
  color: #966f6f;
  justify-self: self-start;
}

#stop__button:disabled {
  color: #966f6fd3;
}

.play__stop__controls {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  justify-content: center;
  grid-gap: 1rem;
}

.progress__container {
  display: inline-flex;
  background: #a8a8a8;
  height: 1rem;
  width: 100%;
  margin-bottom: 2.4rem;
  border-radius: 10px;
  border-radius: 12px;
  background: #e6e6e6;
  box-shadow: inset 7px 7px 15px #cdcdcd, inset -7px -7px 15px #ffffff;
  cursor: pointer;
  align-self: center;
}

.progress__bar {
  background: linear-gradient(360deg, #2da87b, #34dcacfa);
  border-radius: 12px;
  transition: all ease-in-out 0.03s;
}

#progress__fill {
  width: 0%;
}