body {
  font-family: "Roboto", sans-serif;
  background-color: #fafafa;
  color: #222;
  margin: 0;
  padding: 0;
  text-align: center;
}

#app {
  max-width: 550px;
  margin: 60px auto;
  padding: 20px;
}

h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #315999;
}

.bajada {
  font-size: 14px;
  color: #555;
  line-height: 1.6em;
  margin: 0 auto 30px auto;
  max-width: 90%;
}

.instruccion {
  font-size: 14px;
  font-style: italic;
  color: #315999;
  margin-top: 10px;
  margin-bottom: 25px;
}

.selector-container {
  margin-bottom: 10px;
}

select {
  font-family: "Roboto", sans-serif;
  font-size: 15px;
  color: #fff;
  background-color: #315999;
  border: none;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
  outline: none;
}

#slider-container {
  margin: 40px 0;
}

.slider-wrapper {
  position: relative;
  width: 100%;
  margin: 0 auto 10px auto;
}

#slider {
  width: 100%;
  cursor: pointer;
  appearance: none;
  background: #ddd;
  height: 6px;
  border-radius: 3px;
  outline: none;
}

#slider::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #315999;
  border: 3px solid #fff;
  box-shadow: 0 0 3px rgba(0,0,0,0.2);
  cursor: pointer;
}

#real-marker {
  position: absolute;
  top: 50%;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: rgba(150,31,27,0.3);
  border: 2px solid #961f1b;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.5s ease, left 0.6s ease;
}

.slider-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 12px;
  color: #888;
}

button {
  font-family: "Roboto", sans-serif;
  font-size: 15px;
  font-weight: 700;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 10px 24px;
  margin-top: 20px;
}

#submit {
  background-color: #315999;
  color: #fff;
}
#submit:hover {
  background-color: #274b82;
}

#restart {
  background-color: #fff;
  color: #315999;
  border: 2px solid #315999;
}
#restart:hover {
  background-color: #315999;
  color: #fff;
}

#result {
  margin-top: 25px;
  font-size: 16px;
  font-weight: 400;
  color: #333;
}

.credit {
  margin-top: 40px;
  font-size: 12px;
  font-style: italic;
  color: #666;
  text-align: center;
}