:root {
  --phosphor: #33ff33;
  --phosphor-dim: #1faa1f;
  --phosphor-bright: #aaffaa;
  --bg: #020402;
  --glow: 0 0 4px rgba(51, 255, 51, 0.55), 0 0 11px rgba(51, 255, 51, 0.25);
}

/* Tema ambar (easter egg: `theme amber`) */
.crt.amber {
  --phosphor: #ffb000;
  --phosphor-dim: #aa7400;
  --phosphor-bright: #ffd27f;
  --glow: 0 0 4px rgba(255, 176, 0, 0.55), 0 0 11px rgba(255, 176, 0, 0.25);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #000;
  overflow: hidden;
}

body {
  font-family: "VT323", "Courier New", monospace;
}

.crt {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, #061206 0%, var(--bg) 100%);
  color: var(--phosphor);
  text-shadow: var(--glow);
  padding: 2.2vmin;
  cursor: text;
  animation: flicker 6s infinite steps(60);
}

/* Vignette + curvatura sutil de tubo */
.crt::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    ellipse at center,
    transparent 60%,
    rgba(0, 0, 0, 0.55) 100%
  );
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.22) 3px,
    rgba(0, 0, 0, 0.22) 3px
  );
  z-index: 5;
  animation: scan 8s linear infinite;
}

.screen {
  position: relative;
  height: 100%;
  overflow-y: auto;
  font-size: clamp(18px, 2.6vmin, 26px);
  line-height: 1.25;
  z-index: 2;
  scrollbar-width: thin;
  scrollbar-color: var(--phosphor-dim) transparent;
}

.screen::-webkit-scrollbar {
  width: 8px;
}
.screen::-webkit-scrollbar-thumb {
  background: var(--phosphor-dim);
}

.output {
  white-space: pre-wrap;
  word-break: break-word;
}

.line {
  white-space: pre-wrap;
  word-break: break-word;
}

.line a,
.output a {
  color: var(--phosphor-bright);
  text-decoration: underline;
}

.muted {
  color: var(--phosphor-dim);
}
.bright {
  color: var(--phosphor-bright);
}
.error {
  color: #ff5555;
  text-shadow: 0 0 4px rgba(255, 85, 85, 0.6);
}

.input-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  white-space: pre-wrap;
  word-break: break-word;
}

.prompt {
  color: var(--phosphor-bright);
  flex-shrink: 0;
}

.cursor {
  animation: blink 1s steps(1) infinite;
}

.input-line.hidden {
  display: none;
}

/* input real: invisible pero capturando teclado/foco */
#cmdline {
  position: absolute;
  left: -9999px;
  top: 0;
  opacity: 0;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@keyframes flicker {
  0%,
  97%,
  100% {
    opacity: 1;
  }
  98% {
    opacity: 0.86;
  }
  99% {
    opacity: 0.97;
  }
}

@keyframes scan {
  0% {
    background-position-y: 0;
  }
  100% {
    background-position-y: 100vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .crt,
  .scanlines {
    animation: none;
  }
  .cursor {
    animation: blink 1s steps(1) infinite;
  }
}