/* ===================== LOGIN SCREEN ===================== */
#loginScreen{
  position:fixed;inset:0;z-index:10000;display:flex;align-items:center;
  justify-content:center;background:var(--bg0);transition:opacity .5s
}
#loginScreen.gone{opacity:0;pointer-events:none}
.ls-bg{position:absolute;inset:0;overflow:hidden}
.ls-pixel-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(124,58,237,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(124,58,237,.07) 1px,transparent 1px);
  background-size:32px 32px;
  animation:gridmove 20s linear infinite
}
@keyframes gridmove{from{background-position:0 0}to{background-position:32px 32px}}
.ls-card{
  position:relative;z-index:1;
  background:var(--bg1);border:1.5px solid var(--bdr2);border-radius:18px;
  padding:28px 24px;width:min(380px,94vw);
  box-shadow:0 0 60px rgba(124,58,237,.25),0 0 120px rgba(0,210,211,.08)
}
.ls-logo{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.ls-logo-px{font-size:32px}
.ls-brand{font-family:'Press Start 2P';font-size:12px;color:var(--gold);
  text-shadow:0 0 16px rgba(255,215,0,.5);line-height:1.8}
.ls-sub{font-family:'Press Start 2P';font-size:8px;color:var(--cyan)}
.ls-door{
  background:var(--bg2);border:1px solid var(--bdr);border-radius:12px;
  padding:18px;text-align:center;margin-bottom:18px
}
.ls-door-top{font-family:'Press Start 2P';font-size:8px;color:var(--txt2);margin-bottom:14px}
.ls-pin-display{
  display:flex;justify-content:center;gap:14px;margin-bottom:12px;
  padding:10px;background:var(--bg0);border-radius:8px;border:1px solid var(--bdr)
}
.pin-dot{
  width:18px;height:18px;border-radius:50%;border:2px solid var(--bdr2);
  background:transparent;transition:.2s;display:block
}
.pin-dot.filled{background:var(--purple);border-color:var(--purple);
  box-shadow:0 0 8px rgba(124,58,237,.8)}
.pin-dot.error{background:var(--orange);border-color:var(--orange);
  animation:shake .3s ease}
.pin-dot.ok{background:var(--green);border-color:var(--green)}
@keyframes shake{0%,100%{transform:translateX(0)}25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
.ls-pos-hint{
  font-size:11px;color:var(--cyan);margin-bottom:14px;min-height:18px;
  font-family:'Noto Sans Lao',sans-serif;transition:.3s
}
.ls-keypad{
  display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:220px;margin:0 auto
}
.kbtn{
  height:48px;background:var(--bg3);border:1px solid var(--bdr);border-radius:8px;
  color:var(--txt0);font-size:18px;font-weight:700;cursor:pointer;transition:.1s;
  font-family:'Press Start 2P'
}
.kbtn:hover{background:var(--bg4);border-color:var(--bdr2)}
.kbtn:active{transform:scale(.93);background:var(--purple)}
.kbtn-clr{font-size:16px;color:var(--orange)}
.kbtn-enter{background:var(--purple);color:#fff;font-size:14px}
.kbtn-enter:hover{background:var(--purple2)}
.ls-err{min-height:20px;font-size:11px;color:var(--orange);margin-top:8px;
  font-family:'Noto Sans Lao',sans-serif;text-align:center}
.ls-hint{padding:10px 12px;background:var(--bg2);border-radius:8px;border:1px solid var(--bdr)}
.ls-hint-row{font-size:10px;color:var(--txt2);margin-bottom:6px;font-family:'Noto Sans Lao',sans-serif}
.ls-hint-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.ls-hint-grid span{font-size:10px;color:var(--txt1);font-family:'Noto Sans Lao',sans-serif}