* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  display: flex;
  min-height: 100vh;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background-color: #191622;
  font-family: 'DM Sans', Helvetica, sans-serif;
}
a {
  text-decoration: none; /* remove o sublinhado dos links */
}

h1 {
  color: #fff;
  margin-bottom: 20px;
}

.keys {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.key {
  width: 80px;
  height: 80px;
  border: 2px solid #988aa8;
  color: #988aa8;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 30px;
  font-weight: bold;
  background-color: #13111b;
  border-radius: 0.5rem;
  transition: border-radius 0.1s;
}
.key.active {
  border: 2px solid #78d1e1;
  color: #78d1e1;
  border-radius: 1rem;
}

.composer {
  width: 260px;
  margin-top: 20px;
}
.composer #input {
  width: 100%;
  outline: none;
  font-size: 17px;
  padding: 10px 15px;
  border-radius: 0.5rem;
  font-family: 'DM Sans', Helvetica, sans-serif;
}
.composer button {
  width: 100%;
  height: 40px;
  background: none;
  border: 2px solid #988aa8;
  color: #988aa8;
  font-size: 1rem;
  font-family: 'DM Sans', Helvetica, sans-serif;
  font-weight: bold;
  margin-top: 10px;
  cursor: pointer;
  background-color: #13111b;
  border-radius: 0.5rem;
  transition: color 0.5s, border 0.5s, border-radius 0.5s;
}
.composer button:hover {
  color: #c369c6;
  border: 2px solid #c369c6;
  border-radius: 1rem;
}

footer {
  position: absolute;
  bottom: 30px;
}

.menu {
  display: flex;
  gap: 10px;
}

.menu-num,
.act {
  width: 50px;
  height: 50px;
  border: 1px solid #988aa8;
  color: #988aa8;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  font-weight: bold;
  background-color: #13111b;
  border-radius: 0.5rem;
  transition: border-radius 0.1s;
}

.menu-num:hover {
  border: 1px solid #78d1e1;
  color: #78d1e1;
  border-radius: 0.8rem;
}

.act {
  border: 1px solid #c369c6;
  color: #c369c6;
  border-radius: 0.8rem;
}

.menu-title {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #988aa8;
  margin: 16px 0;
  font-weight: bold;
  font-size: 18px;
}