style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap");

* {
  font-family: "Poppins", sans-serif;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  color: #fff;
  background: #7f00ff;
  background: linear-gradient(to bottom, #7f00ff, #e100ff);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1 {
  margin-top: 1.5rem;
}

button {
  font-size: 1rem;
  background: #7f00ff;
  color: #fff;
  border: none;
  cursor: pointer;
  box-shadow: 0 3px 3px rgba(0, 0, 0, 0.25);
  height: 48px;
  border-radius: 24px;
  touch-action: manipulation;
}

button:hover {
  filter: hue-rotate(25deg);
}

button:disabled {
  pointer-events: none;
  filter: saturate(60%);
}

input {
  outline: none;
  border: none;
  text-align: center;
  width: 60px;
  height: 28px;
  border-radius: 14px;
  font-weight: 500;
  color: #7f00ff;
  box-shadow: 0 3px 3px rgba(0, 0, 0, 0.25);
  -moz-appearance: textfield;
}

input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.container {
  width: min(420px, 90%);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.counter {
  font-size: clamp(10em, 16em, 14em);
  font-weight: 500;
  line-height: 1.5;
  text-shadow: 0 3px 3px rgba(0, 0, 0, 0.25);
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  width: 100%;
}

.buttons button:nth-child(-n + 2) {
  width: calc(50% - 10px);
}

.buttons button:last-child {
  width: 100%;
}

.settings {
  width: 100%;
}

.settings p {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}