/* ── Reset ──────────────────────────────────────────────────────────────── */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    /* ── Phosphor green palette ─────────────────────────────────────────────── */
    :root {
      --amber:    #33ff33;   /* normal output       */
      --amber-hi: #99ff99;   /* bright / prompts    */
      --amber-lo: #1a6b1a;   /* dim / system msgs   */
      --amber-bg: #000000;
      --amber-border: #228822;
    }

    html, body {
      background: var(--amber-bg);
      color: var(--amber);
      font-family: 'VT323', 'Courier New', Courier, monospace;
      font-size: 24px;
      line-height: 1.45;
      height: 100%;
      overflow: hidden;
    }

    /* ── Outer layout ───────────────────────────────────────────────────────── */
    #app {
      display: flex;
      flex-direction: column;
      height: 100vh;
      width: 100%;
    }

    /* ── Status panel ───────────────────────────────────────────────────────── */
    #panel {
      flex-shrink: 0;
      padding: 4px 8px;
      border-bottom: 1px solid var(--amber-border);
      white-space: pre;
      overflow: hidden;
      color: var(--amber-hi);
      line-height: 1.5;
      user-select: none;
    }
    #panel .dim  { color: var(--amber-lo); }
    #panel .norm { color: var(--amber); }

    /* ── Scrollable output ──────────────────────────────────────────────────── */
    #output {
      flex: 1;
      overflow-y: auto;
      padding: 8px 12px 4px;
      scroll-behavior: smooth;
    }

    .line {
      display: block;
      white-space: pre-wrap;
      word-break: break-word;
      min-height: 1.5em;
    }
    .line.dim   { color: var(--amber-lo); }
    .line.hi    { color: var(--amber-hi); }

    /* Rides the end of the text being revealed. Deliberately does not blink —
       against 700 characters a second of motion a blink reads as flicker. */
    .tt-cursor {
      display: inline-block;
      width: 0.6em;
      height: 1em;
      margin-left: 1px;
      vertical-align: text-bottom;
      background: currentColor;
    }
    .line.err   { color: #cc4400; }
    .line.white { color: #ffffff; }

    /* ── Input row ──────────────────────────────────────────────────────────── */
    #input-row {
      flex-shrink: 0;
      display: flex;
      align-items: center;
      padding: 4px 12px 8px;
      border-top: 1px solid var(--amber-lo);
    }

    #prompt {
      color: var(--amber-hi);
      white-space: pre;
      user-select: none;
    }

    #cmd-input {
      flex: 1;
      background: transparent;
      border: none;
      outline: none;
      color: var(--amber);
      font-family: inherit;
      font-size: inherit;
      caret-color: var(--amber-hi);
      padding: 0 0 0 2px;
    }

    /* hide the password field visually but keep it readable by screenreaders */
    

    /* ── Blinking cursor ────────────────────────────────────────────────────── */
    @keyframes blink {
      0%, 49%  { opacity: 1; }
      50%, 100%{ opacity: 0; }
    }
    .cursor::after {
      content: '█';
      animation: blink 1s step-end infinite;
      color: var(--amber-hi);
    }

    /* ── Scrollbar ──────────────────────────────────────────────────────────── */
    #output::-webkit-scrollbar { width: 6px; }
    #output::-webkit-scrollbar-track { background: #111; }
    #output::-webkit-scrollbar-thumb { background: var(--amber-lo); border-radius: 3px; }

    /* ── Mobile ─────────────────────────────────────────────────────────────── */
    @media (max-width: 600px) {
      html, body { font-size: 15px; }
      #output     { padding: 6px 8px 4px; }
      #input-row  { padding: 4px 8px 6px; }
      #panel      { padding: 4px 6px; }
    }

    /* ── Letter overlay (floppy letter) ─────────────────────────────────────── */
    #crt-overlay {
      position: fixed; inset: 0; z-index: 1000;
      display: none;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      background: rgba(0, 0, 0, 0.65);
      opacity: 0;
      transition: opacity 0.3s ease;
      cursor: default;
    }
    #crt-overlay.visible { opacity: 1; }

    #crt-screen {
      position: relative; z-index: 2;
      max-width: 860px; width: 92%;
      max-height: 90vh;
      overflow-y: auto;
      padding: 3rem 3.5rem;
      background: #faf9f7;
      border-radius: 2px;
      box-shadow: 0 12px 48px rgba(0, 0, 0, 0.55);
      font-family: 'Lora', Georgia, serif;
      font-size: 17px;
      line-height: 1.85;
      color: #1a1a1a;
      scrollbar-width: thin;
      scrollbar-color: #ccc transparent;
    }
    #crt-screen::-webkit-scrollbar       { width: 4px; }
    #crt-screen::-webkit-scrollbar-thumb { background: #ccc; border-radius: 2px; }

    #crt-bar {
      font-family: 'Courier New', Courier, monospace;
      font-size: 0.75rem;
      color: #999;
      border-bottom: 1px solid #e0e0e0;
      padding-bottom: 0.75rem;
      margin-bottom: 2rem;
      letter-spacing: 0.05em;
    }
    #crt-body {
      white-space: pre-wrap;
    }
    #crt-foot {
      font-family: 'Courier New', Courier, monospace;
      font-size: 0.75rem;
      color: #aaa;
      border-top: 1px solid #e0e0e0;
      margin-top: 2.5rem;
      padding-top: 0.75rem;
      text-align: center;
    }
    #crt-foot .cursor::after { color: #aaa; }

    @media (max-width: 600px) {
      #crt-screen { padding: 2rem 1.5rem; font-size: 15px; }
    }
/* Firefox scrollbars */
#output, #crt-screen {
  scrollbar-width: thin;
  scrollbar-color: var(--amber-lo) #111;
}