:root{
  --ink:#0b0f0d;
  --panel:#101613;
  --panel-2:#141c19;
  --line:#26332d;
  --line-bright:#3a4c43;
  --phosphor:#6fffb0;
  --phosphor-dim:#3d8a63;
  --amber:#e8b969;
  --red:#e2645c;
  --text:#cfe0d6;
  --text-dim:#7f9188;
  --mono: "JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans: "Inter","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:
    radial-gradient(ellipse at 50% -10%, #16201b 0%, var(--ink) 55%),
    var(--ink);
  color:var(--text);
  font-family:var(--sans);
  min-height:100vh;
  padding:40px 20px 80px;
  -webkit-font-smoothing:antialiased;
}
.scanlines{
  position:fixed; inset:0; pointer-events:none; z-index:50;
  background:repeating-linear-gradient(
    to bottom, rgba(255,255,255,0.012) 0px, rgba(255,255,255,0.012) 1px,
    transparent 1px, transparent 3px
  );
  mix-blend-mode:overlay;
}
.wrap{max-width:760px;margin:0 auto;position:relative;}

/* HERO */
.hero{
  text-align:center;
  padding:10px 0 34px;
  border-bottom:1px solid var(--line);
  margin-bottom:30px;
  position:relative;
}
.hero .logo{
  width:52px;
  height:52px;
  display:block;
  margin:0 auto 16px;
}
.hero .eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.28em;
  color:var(--phosphor-dim);
  text-transform:uppercase;
  margin-bottom:14px;
}
.hero h1{
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(26px,5vw,40px);
  letter-spacing:-0.01em;
  margin:0 0 10px;
  color:var(--text);
}
.hero h1 .b{color:var(--phosphor); text-shadow:0 0 18px rgba(111,255,176,.35);}
.hero p{
  color:var(--text-dim);
  font-size:14px;
  max-width:480px;
  margin:0 auto;
  line-height:1.6;
}
.modeline{
  display:flex; justify-content:center; gap:18px; margin-top:20px;
  font-family:var(--mono); font-size:11px; color:var(--text-dim); letter-spacing:.05em;
  flex-wrap:wrap;
}
.modeline span{display:flex;align-items:center;gap:6px;}
.dot{width:5px;height:5px;border-radius:50%;background:var(--phosphor-dim);}
.dot.on{background:var(--phosphor); box-shadow:0 0 8px var(--phosphor);}

/* TABS */
.tabs{
  display:flex;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:10px;
  padding:4px;
  margin-bottom:22px;
  gap:4px;
}
.tab{
  flex:1;
  text-align:center;
  padding:12px 10px;
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--text-dim);
  background:transparent;
  border:none;
  border-radius:7px;
  cursor:pointer;
  transition:all .18s ease;
}
.tab:hover{color:var(--text);}
.tab.active{
  background:var(--panel-2);
  color:var(--phosphor);
  box-shadow:inset 0 0 0 1px var(--line-bright), 0 0 16px rgba(111,255,176,.06);
}

/* PANEL */
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:12px;
  padding:26px;
  position:relative;
  overflow:hidden;
}
.panel::before{
  content:"";
  position:absolute; top:0; left:0; right:0; height:1px;
  background:linear-gradient(90deg, transparent, var(--phosphor-dim), transparent);
  opacity:.5;
}
.field{margin-bottom:18px;}
.field label{
  display:flex; justify-content:space-between; align-items:baseline;
  font-family:var(--mono); font-size:11px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--text-dim); margin-bottom:8px;
}
.field label .hint{ text-transform:none; letter-spacing:0; font-size:10.5px; color:var(--phosphor-dim); }
textarea, input[type="text"], input[type="password"]{
  width:100%;
  background:#0b110e;
  border:1px solid var(--line);
  border-radius:8px;
  color:var(--text);
  font-family:var(--mono);
  font-size:13.5px;
  padding:12px 14px;
  resize:vertical;
  transition:border-color .15s, box-shadow .15s;
}
textarea:focus, input:focus{
  outline:none;
  border-color:var(--phosphor-dim);
  box-shadow:0 0 0 3px rgba(111,255,176,.08);
}
textarea{min-height:100px; line-height:1.5;}
.pw-row{position:relative;}
.pw-row input{padding-right:44px; width:100%;}
.eye{
  position:absolute; right:8px; top:50%; transform:translateY(-50%);
  background:none;border:none;color:var(--text-dim);cursor:pointer;
  font-family:var(--mono); font-size:11px; letter-spacing:.05em;
  padding:6px 8px;
}
.eye:hover{color:var(--phosphor);}
.eye:focus-visible, .btn:focus-visible, .chip:focus-visible, .tab:focus-visible,
textarea:focus-visible, input:focus-visible{
  outline:2px solid var(--phosphor);
  outline-offset:2px;
}

.strength{height:3px; border-radius:2px; background:var(--line); margin-top:8px; overflow:hidden;}
.strength i{display:block; height:100%; width:0%; background:var(--red); transition:width .2s, background .2s;}

.actions{display:flex; gap:10px; margin-top:24px;}
.btn{
  font-family:var(--mono); font-size:12.5px; letter-spacing:.1em; text-transform:uppercase;
  padding:13px 20px; border-radius:8px; border:1px solid var(--line-bright);
  background:var(--panel-2); color:var(--text); cursor:pointer;
  transition:all .15s ease; flex:1;
}
.btn:hover{border-color:var(--phosphor-dim); color:var(--phosphor);}
.btn.primary{
  background:linear-gradient(180deg, #1a2b23, #14201a);
  border-color:var(--phosphor-dim); color:var(--phosphor);
}
.btn.primary:hover{
  box-shadow:0 0 22px rgba(111,255,176,.18);
  border-color:var(--phosphor);
}
.btn:disabled{opacity:.4; cursor:not-allowed;}
.btn:active:not(:disabled){transform:translateY(1px);}

.out{margin-top:20px;}
.out-box{
  background:#0b110e; border:1px solid var(--line); border-radius:8px;
  padding:14px; font-family:var(--mono); font-size:13px; line-height:1.6;
  word-break:break-all; white-space:pre-wrap; color:var(--phosphor);
  min-height:52px;
}
.out-box.empty{color:var(--text-dim); font-style:italic;}
.out-actions{display:flex; gap:8px; margin-top:10px;}
.chip{
  font-family:var(--mono); font-size:10.5px; letter-spacing:.08em; text-transform:uppercase;
  color:var(--text-dim); background:var(--panel-2); border:1px solid var(--line);
  padding:7px 12px; border-radius:6px; cursor:pointer;
}
.chip:hover{color:var(--phosphor); border-color:var(--phosphor-dim);}

.status{
  font-family:var(--mono); font-size:12px; margin-top:16px; padding:10px 14px;
  border-radius:7px; display:none; align-items:center; gap:8px;
}
.status.show{display:flex;}
.status.ok{background:rgba(111,255,176,.07); color:var(--phosphor); border:1px solid rgba(111,255,176,.25);}
.status.err{background:rgba(226,100,92,.08); color:var(--red); border:1px solid rgba(226,100,92,.28);}
.status .ic{font-size:14px;}

/* Auth tag visual — the signature element */
.tagviz{
  margin-top:18px; padding:14px; border:1px dashed var(--line-bright); border-radius:8px;
  display:none;
}
.tagviz.show{display:block;}
.tagviz .tv-label{
  font-family:var(--mono); font-size:10px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--text-dim); margin-bottom:10px;
}
.tagbits{display:flex; gap:3px; flex-wrap:wrap;}
.tagbits i{
  width:16px; height:20px; border-radius:2px; background:var(--panel-2);
  border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--mono); font-size:9px; color:var(--phosphor-dim);
  animation: pop .35s ease backwards;
}
@keyframes pop{ from{ opacity:0; transform:scale(.5);} to{opacity:1; transform:scale(1);} }

.footer-note{
  margin-top:26px; text-align:center; font-family:var(--mono); font-size:10.5px;
  color:var(--text-dim); line-height:1.7; letter-spacing:.02em;
}
.footer-note b{color:var(--phosphor-dim); font-weight:600;}

@media (prefers-reduced-motion: reduce){
  .tagbits i{animation:none;}
}

/* ============================================================
   RESPONSIVE — Tablet (≤ 900px) and Mobile (≤ 640px, ≤ 400px)
   ============================================================ */

/* Tablet and below: tighten outer spacing, keep two-column actions */
@media (max-width: 900px){
  body{padding:32px 18px 70px;}
  .wrap{max-width:100%;}
}

/* Mobile: stack actions, enlarge tap targets, prevent iOS input zoom */
@media (max-width: 640px){
  body{padding:22px 14px 56px;}

  .hero{padding:6px 0 24px; margin-bottom:22px;}
  .hero .logo{width:40px; height:40px; margin-bottom:12px;}
  .hero h1{font-size:26px;}
  .hero p{font-size:13.5px; padding:0 4px;}
  .eyebrow{font-size:10px; letter-spacing:.2em;}

  .modeline{gap:10px 14px; font-size:10px;}

  .tabs{padding:3px;}
  .tab{font-size:11px; padding:12px 6px; letter-spacing:.08em;}

  .panel{padding:18px 16px; border-radius:10px;}

  .field{margin-bottom:16px;}
  .field label{flex-direction:column; align-items:flex-start; gap:3px;}

  /* 16px min font-size on inputs prevents iOS Safari auto-zoom on focus */
  textarea, input[type="text"], input[type="password"]{
    font-size:16px;
    padding:11px 12px;
  }
  textarea{min-height:110px;}

  .pw-row input{padding-right:52px;}
  .eye{
    right:4px; padding:10px 10px;
    min-width:44px; min-height:36px;
    display:flex; align-items:center; justify-content:center;
  }

  .actions{flex-direction:column; gap:10px; margin-top:20px;}
  .btn{width:100%; padding:14px 18px; min-height:46px;}

  .out-actions{flex-direction:column;}
  .chip{width:100%; text-align:center; padding:10px 12px; min-height:40px;}

  .out-box{font-size:12.5px; padding:12px;}

  .tagviz{padding:12px;}
  .tagbits i{width:14px; height:18px; font-size:8px;}

  .footer-note{font-size:9.5px; margin-top:20px; padding:0 6px;}
}

/* Small phones */
@media (max-width: 400px){
  .hero h1{font-size:22px;}
  .modeline{flex-direction:column; align-items:center; gap:6px;}
  .tagbits i{width:13px; height:17px; font-size:7px;}
}

/* Landscape phones with limited height: reclaim vertical space */
@media (max-height: 480px) and (orientation: landscape){
  body{padding:16px 14px 40px;}
  .hero{padding:4px 0 16px; margin-bottom:16px;}
  textarea{min-height:70px;}
}