:root{
  --bg:#000;
  --text:#0f0;
  --muted:#999;
  --err:#ff5555;
  --warn:#ffea00;
  --signal:#00e6e6;
  --repair:#66ffb3;
  --trans:#ff77ff;
  --glass: rgba(255,255,255,0.03);
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;padding:0;background:var(--bg);color:var(--text);font-family: "Courier New", monospace;}

/* BOOT / LOGIN SCREEN */
.boot-screen{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#000 0%, #020202 60%);z-index:50}
.boot-box{width:720px;max-width:95%;padding:24px;border-radius:10px;background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));box-shadow:0 6px 30px rgba(0,0,0,0.9);border:1px solid rgba(255,255,255,0.02)}
.boot-logo{font-size:26px;letter-spacing:3px;text-align:center;margin-bottom:12px}
.boot-line{font-size:14px;color:var(--muted);text-align:center;margin-bottom:10px}
.boot-progress{width:100%;height:10px;background:rgba(255,255,255,0.02);border-radius:6px;overflow:hidden;margin-bottom:12px}
.boot-bar{height:100%;width:0%;background:linear-gradient(90deg,var(--signal),var(--repair))}
.login-prompt{margin-top:8px;display:flex;flex-direction:column;align-items:center;gap:8px}
#login-input{min-width:220px;display:inline-block;padding:6px 8px;border-radius:6px;background:var(--glass);color:var(--text);min-height:22px}
.login-hint{font-size:12px;color:var(--muted);text-align:center}
.lang-select{display:flex;gap:6px;margin-top:6px}
.lang-btn{padding:6px 10px;border-radius:6px;background:transparent;color:var(--muted);border:1px solid rgba(255,255,255,0.03);cursor:pointer}
.lang-btn.active{color:var(--text);border-color:var(--signal)}

/* TERMINAL WRAP */
.hidden{display:none}
.terminal{width:100%;height:calc(100vh - 56px);overflow-y:auto;padding:18px;white-space:pre-wrap}
.input-line{position:fixed;left:0;right:0;bottom:0;background:linear-gradient(180deg, rgba(0,0,0,0.0), rgba(0,0,0,0.9));padding:8px 12px;display:flex;align-items:center;gap:8px}
.prompt{color:var(--text)}
.input{outline:none;min-height:18px;flex:1}
.cursor{display:inline-block;width:10px;height:18px;background:var(--text);animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}

/* MESSAGE CLASSES */
.system{color:var(--text)}
.error{color:var(--err)}
.warning{color:var(--warn)}
.signal{color:var(--signal)}
.repair{color:var(--repair)}
.transmission{color:var(--trans)}
.offline{color:var(--muted);opacity:0.9}

/* SCREEN GLITCH */
body.glitching{filter:contrast(2) brightness(1.25) saturate(1.2);animation:shake 0.2s infinite}
@keyframes shake{
  0%{transform:translate(0)}
  25%{transform:translate(-2px,1px)}
  50%{transform:translate(2px,-2px)}
  75%{transform:translate(-1px,-2px)}
  100%{transform:translate(0)}
}

/* small responsive tweaks */
@media (max-width:600px){
  .boot-box{padding:14px}
  .boot-logo{font-size:20px}
  .input-line{padding:12px}
}