.c64-screen {
  background-color: #0000aa;
  color: #00ff00;
  font-family: "C64 Pro Mono", monospace;
  font-size: 20px;
  line-height: 24px;
  padding: 20px;
  height: 100vh;
  width: 100%;
  border: 40px solid #00aaff;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  position: relative;
}

.sr-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  height: 1px;
  width: 1px;
  top: 0;
  left: 0;
}

.cursor {
  background-color: #00aaff;
  width: 1ch;
  height: 1em;
  display: inline-block;
  animation: cursor-blink 1s infinite;
}

.screen-line {
  margin: 0 0 4px;
  white-space: pre;
  color: #00aaff;
}

#screen-lines {
  flex: 1;
  overflow-y: auto;
}

.screen-line.system-line {
  color: #00aaff;
  text-align: center;
}

.input-line {
  display: flex;
  align-items: center;
  gap: 0;
  min-height: 24px;
}

.prompt {
  color: #00aaff;
}

.input-text {
  color: #00aaff;
  white-space: pre;
}

.idle-notice {
  color: #00aaff;
  margin-top: 8px;
}

.hidden {
  display: none;
}

@keyframes cursor-blink {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}