:root{
  --ink: #15171C;
  --ink-2: #1C1F26;
  --ink-3: #262A33;
  --paper: #E9E6DD;
  --paper-dim: #B9B6AD;
  --paper-faint: #7D8089;
  --amber: #E8A33D;
  --lilac: #9C93D8;
  --green: #7FB88A;
  --red: #E38686;
  --line: #33373F;
}
*{box-sizing:border-box;}
html,body{margin:0;height:100%;}
body{
  background:var(--ink);
  color:var(--paper);
  font-family:'IBM Plex Mono', monospace;
}
a{color:inherit;text-decoration:none;}
code{background:var(--ink-3);padding:1px 5px;border-radius:4px;font-size:0.92em;}

.app{display:grid;grid-template-columns:250px 1fr;min-height:100vh;}
@media (max-width:820px){ .app{grid-template-columns:1fr;} .sidebar{position:static;height:auto;} }

/* ---------- SIDEBAR ---------- */
.sidebar{
  background:var(--ink-2);
  border-right:1px solid var(--line);
  padding:22px 18px;
  position:sticky;
  top:0;
  height:100vh;
  overflow-y:auto;
}
.brand{display:flex;align-items:baseline;gap:8px;margin-bottom:24px;}
.brand .mark{font-family:'Fraunces',serif;font-weight:600;font-size:20px;color:var(--amber);}
.brand .rest{font-size:12px;color:var(--paper-dim);letter-spacing:0.06em;}

.navgroup{margin-bottom:22px;}
.navgroup h4{
  font-size:10.5px;text-transform:uppercase;letter-spacing:0.12em;
  color:var(--paper-faint);margin:0 0 8px 4px;font-weight:500;
}
.navitem{
  display:flex;align-items:center;gap:9px;
  padding:8px 10px;border-radius:6px;
  font-size:13px;color:var(--paper-dim);
  cursor:pointer;margin-bottom:2px;
  border:1px solid transparent;
}
.navitem:hover{background:var(--ink-3);color:var(--paper);}
.navitem.active{background:var(--ink-3);color:var(--amber);border-color:var(--line);}
.navitem .dot{width:6px;height:6px;border-radius:50%;background:currentColor;opacity:0.6;flex-shrink:0;}

.sidebar-ad{
  margin-top:20px;border:1px dashed var(--line);border-radius:8px;padding:14px 10px;
  text-align:center;color:var(--paper-faint);font-size:10.5px;letter-spacing:0.08em;text-transform:uppercase;
}
.sidebar-ad .h{font-size:9px;opacity:0.6;margin-bottom:6px;}

/* ---------- MAIN ---------- */
main{padding:40px 44px 80px;max-width:900px;}
@media (max-width:600px){ main{padding:28px 18px 60px;} }

.crumbs{font-size:11.5px;color:var(--paper-faint);margin-bottom:18px;}
.crumbs a:hover{color:var(--amber);}

.eyebrow{font-size:12px;letter-spacing:0.14em;text-transform:uppercase;color:var(--amber);margin-bottom:12px;}
h1{font-family:'Fraunces',serif;font-weight:600;font-size:clamp(28px,4vw,40px);line-height:1.1;margin:0 0 14px;letter-spacing:-0.01em;}
h1 em{color:var(--lilac);font-style:normal;}
h2{font-family:'Fraunces',serif;font-weight:600;font-size:20px;margin:0 0 12px;color:var(--paper);}
.sub{color:var(--paper-dim);font-size:14px;line-height:1.65;max-width:620px;margin-bottom:0;}
.privacy{
  display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:11.5px;
  color:var(--green);border:1px solid var(--line);padding:5px 12px;border-radius:100px;
}
.privacy::before{content:"●";font-size:8px;}

/* home grid */
.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:32px;}
@media (max-width:600px){ .grid{grid-template-columns:1fr;} }
.card{background:var(--ink-2);border:1px solid var(--line);border-radius:10px;padding:18px;transition:border-color .15s;display:block;}
.card:hover{border-color:var(--amber);}
.card .tt{font-size:14px;color:var(--paper);margin-bottom:5px;font-weight:600;}
.card .dd{font-size:12px;color:var(--paper-dim);line-height:1.5;}
.card .cat{font-size:10px;color:var(--amber);text-transform:uppercase;letter-spacing:0.08em;margin-bottom:8px;}

.inline-ad{
  margin:34px 0;border:1px dashed var(--line);border-radius:8px;padding:16px;
  text-align:center;color:var(--paper-faint);font-size:11px;letter-spacing:0.06em;text-transform:uppercase;
}

/* howto / related */
.howto{margin-top:36px;}
.howto ol{padding-left:20px;margin:0;color:var(--paper-dim);font-size:13.5px;line-height:1.9;}
.howto p{color:var(--paper-dim);font-size:13.5px;line-height:1.75;}
.related{margin-top:30px;}
.related-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.related-list a{
  font-size:12px;color:var(--paper-dim);border:1px solid var(--line);padding:6px 12px;border-radius:100px;
}
.related-list a:hover{border-color:var(--amber);color:var(--amber);}

/* tool shell (shared markup produced by JS renderers) */
.toolbox{background:var(--ink-2);border:1px solid var(--line);border-radius:10px;overflow:hidden;}
.panes{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);}
@media (max-width:700px){ .panes{grid-template-columns:1fr;} }
.pane{background:var(--ink-2);display:flex;flex-direction:column;min-height:300px;}
.pane-head{
  display:flex;align-items:center;justify-content:space-between;padding:11px 15px;
  border-bottom:1px solid var(--line);font-size:10.5px;letter-spacing:0.09em;
  text-transform:uppercase;color:var(--paper-dim);
}
.pane-head .tag{color:var(--amber);}
.pane-head .tag.alt{color:var(--lilac);}

textarea, .single-input{
  flex:1;background:transparent;border:0;outline:0;resize:none;color:var(--paper);
  font-family:'IBM Plex Mono',monospace;font-size:13px;line-height:1.6;padding:15px;min-height:260px;width:100%;
}
textarea::placeholder{color:#565b66;}

pre.output{
  flex:1;margin:0;padding:15px;font-family:'IBM Plex Mono',monospace;font-size:13px;
  line-height:1.6;white-space:pre-wrap;word-break:break-word;color:var(--paper);overflow:auto;
}
.kw{color:var(--lilac);} .tname{color:var(--amber);} .prop{color:#8FC7D1;}
.opt{color:var(--paper-dim);} .cmt{color:#6d7280;font-style:italic;}

.controls{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:14px;flex-wrap:wrap;}
.opts{display:flex;gap:16px;font-size:12px;color:var(--paper-dim);flex-wrap:wrap;align-items:center;}
.opts label{display:flex;align-items:center;gap:6px;cursor:pointer;}
.opts input[type=checkbox]{accent-color:var(--amber);}
.opts input[type=text]{background:var(--ink-3);border:1px solid var(--line);color:var(--paper);border-radius:4px;padding:5px 8px;font-family:inherit;font-size:12px;width:90px;}

.actions{display:flex;gap:8px;flex-wrap:wrap;}
button{
  font-family:'IBM Plex Mono',monospace;font-size:12px;padding:9px 15px;border-radius:6px;
  border:1px solid var(--line);background:var(--ink-3);color:var(--paper);cursor:pointer;
  transition:border-color .15s, color .15s;
}
button:hover{border-color:var(--amber);color:var(--amber);}
button.primary{background:var(--amber);border-color:var(--amber);color:var(--ink);font-weight:600;}
button.primary:hover{color:var(--ink);opacity:.9;}

.err{margin-top:10px;font-size:12px;color:var(--red);display:none;}
.single-block{padding:15px;}
.field-label{font-size:10.5px;text-transform:uppercase;letter-spacing:0.08em;color:var(--paper-faint);margin-bottom:8px;}

.jwt-part{padding:12px 15px;border-bottom:1px solid var(--line);}
.jwt-part:last-child{border-bottom:0;}
.jwt-part .lbl{font-size:10px;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:6px;}
.jwt-part.header .lbl{color:var(--lilac);}
.jwt-part.payload .lbl{color:var(--amber);}
.jwt-part.sig .lbl{color:var(--paper-faint);}
.jwt-part pre{margin:0;font-size:12.5px;color:var(--paper);white-space:pre-wrap;word-break:break-word;}

.regex-flags{display:flex;gap:6px;margin-bottom:10px;}
.flag-chip{font-size:11px;padding:5px 10px;border:1px solid var(--line);border-radius:100px;cursor:pointer;color:var(--paper-dim);}
.flag-chip.on{border-color:var(--amber);color:var(--amber);}
mark{background:rgba(232,163,61,0.35);color:var(--paper);border-radius:2px;}

footer.sitefoot{margin-top:50px;padding-top:20px;border-top:1px solid var(--line);font-size:11.5px;color:var(--paper-faint);line-height:1.7;}
footer.sitefoot a:hover{color:var(--amber);}