:root{
  --bg:#0b0e13;
  --bg-raised:#10141c;
  --panel:#12161e;
  --panel-2:#161b25;
  --border:#232938;
  --border-soft:#1b202c;
  --amber:#ffb703;
  --amber-dim:#8a5c00;
  --amber-glow: rgba(255,183,3,0.14);
  --text:#e9e6dd;
  --text-dim:#a9afbd;
  --text-faint:#6b7182;
  --green:#5fd88f;
  --red:#ff8080;
  --blue:#8fb4ff;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'IBM Plex Sans', -apple-system, sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, var(--amber-glow), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
}
@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}
a{ color:inherit; }

/* ---------- Header ---------- */
header.site-header{
  display:flex; align-items:center; justify-content:space-between;
  padding:20px 32px; border-bottom:1px solid var(--border-soft);
  flex-wrap:wrap; gap:12px;
}
.logo{ font-family:var(--mono); font-weight:700; font-size:18px; letter-spacing:-0.02em; color:var(--text); text-decoration:none; display:flex; align-items:center; gap:8px; }
.logo .brace{ color:var(--amber); }
header.site-header nav{ display:flex; gap:22px; flex-wrap:wrap; }
header.site-header nav a{ color:var(--text-dim); text-decoration:none; font-family:var(--mono); font-size:13px; transition:color .15s ease; }
header.site-header nav a:hover{ color:var(--amber); }
header.site-header nav a.current{ color:var(--amber); }

/* ---------- Hero ---------- */
.hero-copy{ max-width:680px; margin:52px auto 8px; padding:0 32px; text-align:center; }
.eyebrow{
  font-family:var(--mono); font-size:12px; letter-spacing:0.14em; text-transform:uppercase;
  color:var(--amber); margin-bottom:14px; display:inline-flex; align-items:center; gap:8px;
}
.eyebrow::before{ content:''; width:6px; height:6px; background:var(--amber); border-radius:50%; box-shadow:0 0 8px var(--amber); }
h1{ font-family:var(--mono); font-weight:600; font-size:clamp(28px,4vw,42px); line-height:1.15; letter-spacing:-0.02em; margin:0 0 14px; }
h1 .accent{ color:var(--amber); }
.hero-sub{ color:var(--text-dim); font-size:16px; line-height:1.6; margin:0 auto; max-width:560px; }

/* ---------- Mode switch ---------- */
.mode-switch{ display:flex; justify-content:center; gap:0; margin:28px auto 0; flex-wrap:wrap; }
.mode-btn{
  font-family:var(--mono); font-size:13px; color:var(--text-dim); background:var(--panel);
  border:1px solid var(--border); padding:9px 20px; cursor:pointer; transition:all .15s ease;
  border-right-width:0;
}
.mode-btn:first-child{ border-radius:8px 0 0 8px; }
.mode-btn:last-child{ border-radius:0 8px 8px 0; border-right-width:1px; }
.mode-btn.active{ background:var(--amber); color:#1a1200; border-color:var(--amber); font-weight:600; }
.mode-hint{ text-align:center; font-family:var(--mono); font-size:11.5px; color:var(--text-faint); margin-top:10px; }

/* ---------- Converter layout ---------- */
.converter-wrap{ max-width:1180px; margin:34px auto 0; padding:0 32px 60px; }
.converter{ display:grid; grid-template-columns:1fr 46px 1fr; gap:0; align-items:stretch; }
@media (max-width:880px){
  .converter{ grid-template-columns:1fr; gap:20px; }
  .pipe-connector{ display:flex; flex-direction:row; justify-content:center; height:auto !important; padding:4px 0; }
  .pipe-connector .pipe-track{ width:60%; height:2px; }
  .pipe-connector .pipe-track::after{ top:50%; left:100%; transform:translate(-50%,-50%); animation:flowH 2.2s linear infinite; }
}
.pane{ background:var(--panel); border:1px solid var(--border); border-radius:10px; display:flex; flex-direction:column; overflow:hidden; min-height:420px; }
.pane-chrome{ display:flex; align-items:center; justify-content:space-between; padding:11px 14px; border-bottom:1px solid var(--border-soft); background:var(--bg-raised); }
.dots{ display:flex; gap:6px; }
.dots span{ width:9px; height:9px; border-radius:50%; background:var(--border); }
.pane-title{ font-family:var(--mono); font-size:12px; color:var(--text-faint); letter-spacing:0.04em; }
.copy-btn{ font-family:var(--mono); font-size:11px; color:var(--text-dim); background:transparent; border:1px solid var(--border); border-radius:5px; padding:5px 10px; cursor:pointer; transition:all .15s ease; letter-spacing:0.02em; }
.copy-btn:hover{ border-color:var(--amber); color:var(--amber); }
.copy-btn.copied{ border-color:var(--green); color:var(--green); }

textarea.code-input{ flex:1; resize:none; border:none; outline:none; background:transparent; color:var(--text); font-family:var(--mono); font-size:13.5px; line-height:1.65; padding:18px; caret-color:var(--amber); }
textarea.code-input::placeholder{ color:var(--text-faint); }

.code-output{ flex:1; margin:0; padding:18px; overflow:auto; font-family:var(--mono); font-size:13px; line-height:1.65; white-space:pre; color:var(--text); }
.code-output .tok-kw{ color:var(--amber); }
.code-output .tok-str{ color:#a3d9a5; }
.code-output .tok-com{ color:var(--text-faint); font-style:italic; }
.code-output .tok-type{ color:var(--blue); }

/* Language tabs — wrap onto new lines, NEVER scroll or clip */
.lang-tabs{
  display:flex; flex-wrap:wrap; gap:6px; padding:12px 14px;
  border-bottom:1px solid var(--border-soft); background:var(--bg-raised);
}
.lang-tab{
  font-family:var(--mono); font-size:11.5px; color:var(--text-dim); background:var(--panel-2);
  border:1px solid var(--border); border-radius:20px; padding:5px 11px; cursor:pointer;
  transition:all .15s ease; white-space:nowrap;
}
.lang-tab:hover{ color:var(--text); border-color:var(--text-faint); }
.lang-tab.active{ background:var(--amber); color:#1a1200; border-color:var(--amber); font-weight:600; }

.pipe-connector{ display:flex; align-items:center; justify-content:center; height:100%; position:relative; }
.pipe-track{ width:2px; height:70%; background:linear-gradient(var(--border), var(--amber-dim), var(--border)); position:relative; }
.pipe-track::after{ content:'|'; position:absolute; left:50%; top:-6px; transform:translateX(-50%); color:var(--amber); font-family:var(--mono); font-weight:700; font-size:18px; animation:flowV 2.2s linear infinite; text-shadow:0 0 10px var(--amber-glow); }
@keyframes flowV{ 0%{ top:-6px; opacity:0; } 15%{ opacity:1; } 85%{ opacity:1; } 100%{ top:100%; opacity:0; } }
@keyframes flowH{ 0%{ opacity:0; } 15%{ opacity:1; } 85%{ opacity:1; } 100%{ opacity:0; } }

.status-line{ max-width:1180px; margin:0 auto; padding:0 32px 8px; font-family:var(--mono); font-size:12px; color:var(--text-faint); display:flex; gap:16px; flex-wrap:wrap; }
.status-line b{ color:var(--text-dim); font-weight:500; }
.status-ok{ color:var(--green); }
.status-err{ color:var(--red); }

/* ---------- Reference / info sections ---------- */
.info-section{ max-width:1180px; margin:0 auto; padding:20px 32px 70px; }
.info-title{ font-family:var(--mono); font-size:12px; letter-spacing:0.1em; text-transform:uppercase; color:var(--text-faint); margin-bottom:18px; text-align:center; }
.card-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; }
.info-card{ border:1px solid var(--border); background:var(--panel); border-radius:8px; padding:14px 16px; cursor:pointer; transition:all .15s ease; }
.info-card:hover{ border-color:var(--amber); transform:translateY(-1px); }
.info-card.active{ border-color:var(--amber); background:var(--bg-raised); }
.info-card .name{ font-family:var(--mono); font-size:13px; font-weight:600; color:var(--text); }
.info-card .desc{ font-family:var(--sans); font-size:11.5px; color:var(--text-faint); margin-top:3px; }

/* ---------- Explainer prose blocks (SEO content) ---------- */
.prose-section{ max-width:760px; margin:0 auto; padding:10px 32px 70px; }
.prose-section h2{ font-family:var(--mono); font-size:20px; font-weight:600; margin:36px 0 12px; }
.prose-section h2:first-child{ margin-top:0; }
.prose-section p{ color:var(--text-dim); font-size:15px; line-height:1.75; margin:0 0 14px; }
.prose-section code{ font-family:var(--mono); background:var(--panel-2); border:1px solid var(--border); border-radius:4px; padding:1px 6px; font-size:0.9em; color:var(--amber); }
.prose-section ul{ color:var(--text-dim); font-size:15px; line-height:1.8; padding-left:22px; }
.prose-section a{ color:var(--blue); text-decoration:underline; text-underline-offset:2px; }

/* ---------- Footer sitemap ---------- */
footer.site-footer{ border-top:1px solid var(--border-soft); padding:44px 32px 32px; }
.footer-inner{ max-width:1180px; margin:0 auto; }
.footer-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:28px; margin-bottom:32px; }
.footer-col h4{ font-family:var(--mono); font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--text-faint); margin:0 0 12px; }
.footer-col a{ display:block; font-family:var(--sans); font-size:13.5px; color:var(--text-dim); text-decoration:none; padding:4px 0; transition:color .15s ease; }
.footer-col a:hover{ color:var(--amber); }
.footer-bottom{ border-top:1px solid var(--border-soft); padding-top:20px; text-align:center; font-family:var(--mono); font-size:12px; color:var(--text-faint); }
.footer-bottom .priv{ color:var(--green); }

/* ---------- Hub page tool grid ---------- */
.tool-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:16px; max-width:1180px; margin:0 auto; padding:0 32px 70px; }
.tool-card{ border:1px solid var(--border); background:var(--panel); border-radius:12px; padding:22px; text-decoration:none; transition:all .15s ease; display:flex; flex-direction:column; gap:8px; }
.tool-card:hover{ border-color:var(--amber); transform:translateY(-2px); }
.tool-card .tool-icon{ font-family:var(--mono); font-size:22px; color:var(--amber); }
.tool-card .tool-name{ font-family:var(--mono); font-size:15.5px; font-weight:600; color:var(--text); }
.tool-card .tool-desc{ font-family:var(--sans); font-size:13px; color:var(--text-dim); line-height:1.5; }
.category-label{ max-width:1180px; margin:44px auto 16px; padding:0 32px; font-family:var(--mono); font-size:12px; letter-spacing:0.1em; text-transform:uppercase; color:var(--amber); }
.category-label:first-of-type{ margin-top:16px; }