@import url('https://fonts.googleapis.com/css2?family=Bungee&display=swap');

body{
  font-family: "Bungee", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  height: 100vh;
  font-size: 16px !important;
  background: #ffc400;
  background-repeat: repeat;
}

h1, #timer{
  font-family: "Bungee", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  letter-spacing: 0.5px;
  text-align: center;
}

span {
  font-size: 24px !important;
  margin-left: 10px;
}

.container{
  max-width: 550px;
  padding: 50px;
  background-color: rgb(255, 255, 255);
  border-radius: 50px;
  margin: auto;
  text-align: center;
}

#timer{
  color: #1e1e1e;
  font-size: 48px;
  margin: 20px 0;
}

#controls{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  border-radius: 14px;
  padding: 10px 50px;
  display: inline-flex;
  margin-bottom: 50px;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

#timeSetting{
  color: #1e1e1e;
  font-size: 24px;
}

#minusBtn, #plusBtn{
  color: #1e1e1e;
  background: transparent;
  border: 2px solid rgba(0,0,0,.25);
  padding: 10px 20px;
  border-radius: 8px;
}

#startBtn{
  background-color: #198754;
  color: #ffffff;
  border: none;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(0,0,0,.18);
  width: 330px;
  height: 80px;
  font-size: 24px;
  margin: auto;
  display: block;
}
#startBtn.blue{
  background-color: #198754 !important;
}

.hidden{ display: none !important; }

.blink{
  animation: blink 1s step-start infinite;
  color: #ff3a3a !important;
}

#minusBtn, #plusBtn, #timeSetting, #startBtn, #container {
  font-size: 16px;
  touch-action: manipulation;
}

@keyframes blink{
  50%{ visibility: hidden; }
}

@media only screen and (max-width: 600px) {
  .container {
    max-width: 90%;
    padding: 30px 20px;
    border-radius: 30px;
  }

  #timer{
    font-size: 36px;
    margin: 15px 0;
  }

  #controls{
    padding: 10px 10px;
    gap: 0;
  }

  #minusBtn, #plusBtn{
    padding: 8px 16px;
    font-size: 18px;
  }

  #timeSetting{
    font-size: 16px;
  }

  #startBtn{
    width: 100%;
    height: 60px;
    font-size: 20px;
  }
}