/* CSS Custom Properties */
:root {
  --terminal-green: #39ff14;
  --terminal-bg: #000;
  --glow-effect: rgba(57, 255, 20, 0.3);
  --border-subtle: rgba(57, 255, 20, 0.2);
  --text-muted: rgba(57, 255, 20, 0.7);
  --border-interactive: rgba(57, 255, 20, 0.4);
  --hover-bg: rgba(57, 255, 20, 0.1);
  
  --font-mono: 16px/1.4 monospace;
  --container-width: 900px;
  --border-radius: 3px;
}

/* Base Styles */
body {
  margin: 0;
  padding: 20px;
  background: var(--terminal-bg);
  color: var(--terminal-green);
  font: var(--font-mono);
  text-shadow: 0 0 5px var(--glow-effect);
}

/* Layout */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
}

#terminal {
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 60vh;
}

.controls {
  margin-top: 20px;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-muted);
}

/* Interactive Elements */
#input,
button {
  background: transparent;
  border: none;
  color: var(--terminal-green);
  font: inherit;
  outline: none;
}

#input {
  text-shadow: inherit;
  width: 80px;
  text-transform: uppercase;
}

button {
  padding: 4px 10px;
  border: 1px solid var(--border-interactive);
  cursor: pointer;
  border-radius: var(--border-radius);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

button:hover {
  border-color: var(--terminal-green);
  background: var(--hover-bg);
}

/* Cursor Animation */
.cursor::after {
  content: "▌";
  animation: blink 1s steps(1) infinite;
}

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