* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #000c0a;
  color: white;
  font-family: monospace;
  display: flex;
  flex-direction: column;
  align-items: start;
  padding: 2rem;
  gap: 1rem;
  font-size: 1rem;
}

#numcanvas {
  position: fixed;
  top: 0;
  left: 0;

  border: 0;
  opacity: 0.4;
  z-index: -1;
}

.box {
  border-radius: 2rem;
  border: 0.125rem solid #020;
  padding: 2rem;
  background-color: #00ff000d;
  backdrop-filter: blur(5px);
}

.widebox {
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

.title {
  padding: 1rem 1.2rem;
  font-weight: bold;
}

.flex1 {
  flex: 1;
}

a {
  color: #00ff00;
  text-decoration: none;
  transition: color 0.2s;

  &:hover {
    color: #00cc00;
  }
}

h3 {
  padding: 0 2rem;
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
}

input[type="text"] {
  font-family: "Courier New", Courier, monospace;
  text-align: center;
  width: 100%;
  padding: 0.5rem;
  border-radius: 1rem;
  border: none;
  background-color: transparent;
  border: none;
  outline: none;
  color: white;
  font-size: 1rem;

  &::placeholder {
    color: white;
    font-style: italic;
  }
}

.row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.column {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
}

.iconbutton {
  border-radius: 3rem;
  width: 3rem;
  min-width: 3rem;
  height: 3rem;
  background-color: #00aa00;
  color: white;
  border: none;
  cursor: pointer;
  transition: scale 0.2s;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;

  &:hover {
    scale: 1.05;
    filter: brightness(1.2);
  }

  &:active {
    filter: brightness(0.8);
  }

  &:disabled {
    background-color: transparent;
    filter: grayscale(1) brightness(0.5);
  }
}

@media (max-width: 550px) {
  /* CSS rules for screens narrower than 500px */
  body {
    padding: 1rem;
    font-size: .9rem;
  }

  .box {
    padding: 1rem;
  }

  h3 {
    padding: 0 1rem;
  }
}