:root{
  --bg:#0b1020;
  --bg2:#0e1326;
  --panel:#12182b;
  --panel2:#161d33;
  --line:#243049;
  --line2:#2e3a57;
  --text:#e6ecf5;
  --muted:#8b97b0;
  --cyan:#34d1c4;
  --violet:#8b5cf6;
  --amber:#f5a623;
  --term:#5eead4;
  --termbg:#070b16;
  --radius:14px;
  --shadow:0 18px 40px -18px rgba(0,0,0,.7);
}
[data-theme="light"]{
  --bg:#eef1f7;
  --bg2:#e6eaf3;
  --panel:#ffffff;
  --panel2:#f4f6fb;
  --line:#dce1ec;
  --line2:#cdd5e4;
  --text:#111827;
  --muted:#5b6680;
  --cyan:#0d9488;
  --violet:#6d28d9;
  --amber:#b45309;
  --term:#0f766e;
  --termbg:#0b1020;
  --shadow:0 18px 40px -22px rgba(15,23,42,.35);
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(139,92,246,.16), transparent 60%),
    radial-gradient(800px 500px at -5% 0%, rgba(52,209,196,.14), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  min-height:100vh;
  line-height:1.5;
}

/* top bar */
.top{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 22px;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, var(--bg2), transparent);
  position:sticky;top:0;z-index:20;backdrop-filter:blur(8px);
}
.brand{display:flex;align-items:center;gap:14px}


.logo{
  width:90px;
  height:90px;
  border-radius:10px;
  overflow:hidden;
  flex:none;
  display:flex;
  align-items:center;
  justify-content:center;
}

.logo img{
  width:100%;
  height:100%;
  object-fit:contain;
}

.brand h1{
  font-family:'Space Grotesk',sans-serif;font-size:17px;margin:0;letter-spacing:.3px;
}
.brand span{display:block;font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.4px}

/* signature: live signal line in the header */
.signal{height:26px;width:120px;opacity:.9}
.signal path{
  stroke:var(--cyan);stroke-width:2;fill:none;
  stroke-dasharray:240;stroke-dashoffset:240;
  animation:trace 3.2s linear infinite;
}
@keyframes trace{to{stroke-dashoffset:0}}

.theme-btn{
  background:var(--panel);border:1px solid var(--line2);color:var(--text);
  padding:9px 14px;border-radius:10px;cursor:pointer;font-size:13px;font-weight:500;
  display:flex;align-items:center;gap:8px;transition:border-color .15s,transform .05s;
}
.theme-btn:hover{border-color:var(--cyan)}
.theme-btn:active{transform:translateY(1px)}

/* layout */
.shell{display:grid;grid-template-columns:230px 1fr;gap:0;max-width:1180px;margin:0 auto}
.nav{
  padding:20px 14px;border-right:1px solid var(--line);min-height:calc(100vh - 71px);
}
.nav .grouplabel{
  font-size:10.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);
  padding:0 10px;margin:6px 0 8px;
}
.navitem{
  display:flex;align-items:center;gap:11px;width:100%;text-align:left;
  background:none;border:0;color:var(--muted);cursor:pointer;
  padding:10px 11px;border-radius:10px;font-size:14px;font-weight:500;
  font-family:inherit;transition:background .12s,color .12s;
}
.navitem .dot{width:7px;height:7px;border-radius:50%;background:var(--line2);flex:none;transition:background .12s}
.navitem:hover{background:var(--panel);color:var(--text)}
.navitem.on{background:var(--panel);color:var(--text)}
.navitem.on .dot{background:var(--cyan);box-shadow:0 0 10px var(--cyan)}

.main{padding:26px 30px 60px}

/* pages */
.page{display:none;animation:rise .28s ease; scroll-margin-top:90px; }
.page.on{display:block}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.eyebrow{font-size:11px;letter-spacing:1.6px;text-transform:uppercase;color:var(--cyan);font-weight:600;margin:0 0 6px}
.page h2{font-family:'Space Grotesk',sans-serif;font-size:24px;margin:0 0 4px;letter-spacing:.2px}
.page .lede{color:var(--muted);font-size:14px;margin:0 0 22px;max-width:60ch}

/* hero on overview */
.hero{
  border:1px solid var(--line);border-radius:18px;padding:26px 28px;margin-bottom:22px;
  background:
    linear-gradient(135deg, rgba(52,209,196,.10), rgba(139,92,246,.08)),
    var(--panel);
  box-shadow:var(--shadow);
}

.hero .ipnow{
  font-family:'JetBrains Mono',monospace;font-size:clamp(28px,5vw,44px);font-weight:500;
  letter-spacing:1px;line-height:1.1;margin:2px 0 4px;
  background:linear-gradient(90deg,var(--text),var(--cyan));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero .where{color:var(--muted);font-size:14px}
.meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;margin-top:22px;
  background:var(--line);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.meta .cell{background:var(--panel);padding:14px 16px}
.meta .k{font-size:11px;letter-spacing:.8px;text-transform:uppercase;color:var(--muted)}
.meta .v{font-size:14px;font-weight:500;margin-top:3px;word-break:break-word}

/* cards & forms */
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow);
}
form{margin:0}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.field{flex:1;min-width:180px}
.field.small{flex:0 0 160px}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:6px;letter-spacing:.3px}
input[type=text],select{
  width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line2);
  background:var(--panel2);color:var(--text);font-size:14px;font-family:inherit;
  transition:border-color .15s,box-shadow .15s;
}
input[type=text]::placeholder{color:var(--muted)}
input[type=text]:focus,select:focus{
  outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(52,209,196,.18);
}
.btn{
  padding:11px 20px;border-radius:10px;border:0;cursor:pointer;
  font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14px;letter-spacing:.3px;
  color:#06101a;background:linear-gradient(135deg,var(--cyan),var(--violet));
  transition:transform .05s,filter .15s;white-space:nowrap;
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:translateY(1px)}

.btn.ghost{background:none;color:var(--text);border:1px solid var(--line2)}
.btn.ghost:hover{border-color:var(--cyan);filter:none}

/* terminal output */
pre.term{
  margin:20px 0 0;background:var(--termbg);color:var(--term);
  border:1px solid var(--line);border-radius:12px;padding:16px 18px;
  font-family:'JetBrains Mono',monospace;font-size:13px;line-height:1.55;
  overflow:auto;max-height:460px;white-space:pre-wrap;word-break:break-word;
}
pre.term::before{
  content:"\26A1 Output";
  display:block;
  color:var(--muted);
  font-size:11px;
  letter-spacing:1px;
  text-transform:uppercase;
  margin-bottom:10px;
}

/* export tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.tile{
  display:block;text-decoration:none;color:inherit;border:1px solid var(--line);
  border-radius:12px;padding:18px 20px;background:var(--panel2);transition:border-color .15s,transform .08s;
}
.tile:hover{border-color:var(--cyan);transform:translateY(-2px)}
.tile .t{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:15px}
.tile .d{color:var(--muted);font-size:13px;margin-top:4px}

.spin{display:none;width:20px;height:20px;border:3px solid var(--line2);
  border-top-color:var(--cyan);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* mobile */
@media(max-width:820px){
  .shell{grid-template-columns:1fr}
  .nav{
    min-height:0;border-right:0;border-bottom:1px solid var(--line);
    display:flex;gap:6px;overflow-x:auto;padding:12px;
  }
  .nav .grouplabel{display:none}
  .navitem{width:auto;white-space:nowrap}
  .main{padding:22px 18px 50px}
  .signal{display:none}
}
@media(prefers-reduced-motion:reduce){
  .signal path{animation:none;stroke-dashoffset:0}
  .page{animation:none}
}