/* Fluxus Executor — single stylesheet, no framework. Optimised for CWV. */
:root{
  --bg:#0a0e17; --bg-2:#0e1320; --panel:#131a2b; --panel-2:#19223a;
  --border:#222d45; --border-soft:#1a2236; --text:#eef2fb; --muted:#94a2c0;
  --brand:#5b7cfa; --brand-2:#34e3c2; --brand-3:#7a93ff; --accent:#ffb020;
  --danger:#ff5d6c; --ok:#2fd073;
  --grad:linear-gradient(135deg,var(--brand),var(--brand-2));
  --radius:16px; --radius-sm:10px; --wrap:1140px;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-brand:0 8px 28px rgba(91,124,250,.35);
  --font:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(1200px 600px at 80% -10%,rgba(108,140,255,.12),transparent 60%),
                   radial-gradient(900px 500px at 0% 0%,rgba(54,224,192,.08),transparent 55%);
  background-attachment:fixed;
}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:20px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.3rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.2rem);margin-top:0}
h3{font-size:1.15rem}
p{margin:0 0 1rem}
img{max-width:100%;height:auto}
.skip-link{position:absolute;left:-999px;top:0;background:var(--brand);color:#fff;padding:.6rem 1rem;z-index:100}
.skip-link:focus{left:8px;top:8px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(10,14,23,.85);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;gap:18px;height:66px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.2rem;color:var(--text)}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--grad);color:#08101e;flex:none;box-shadow:0 2px 10px rgba(52,227,194,.25)}
.brand-mark svg{display:block}
.brand-text{font-weight:800;letter-spacing:-.02em}
.brand-accent{color:var(--brand-2)}
.primary-nav{margin-left:auto}
.primary-nav ul{display:flex;gap:6px;list-style:none;margin:0;padding:0}
.primary-nav a{color:var(--muted);padding:.5rem .8rem;border-radius:8px;font-size:.95rem;font-weight:600}
.primary-nav a:hover{color:var(--text);background:var(--panel);text-decoration:none}
.primary-nav a[aria-current=page]{color:var(--text);background:var(--panel-2)}
.btn-nav-cta{margin-left:4px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.2s}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;justify-content:center;
  padding:.8rem 1.5rem;border-radius:var(--radius-sm);font-weight:700;font-size:1rem;
  background:var(--grad);color:#08101e;border:0;cursor:pointer;
  box-shadow:0 2px 12px rgba(91,124,250,.22);transition:transform .12s,box-shadow .15s,filter .15s}
.btn:hover{transform:translateY(-1px);text-decoration:none;filter:brightness(1.06);box-shadow:0 6px 20px rgba(52,227,194,.28)}
.btn-lg{padding:1rem 1.9rem;font-size:1.08rem}
.btn-ghost{background:var(--panel);border:1px solid var(--border);color:var(--text);box-shadow:none}
.btn-ghost:hover{background:var(--panel-2);border-color:var(--brand);box-shadow:none;filter:none}
.btn-accent{background:linear-gradient(135deg,var(--accent),#ff8f00);color:#1a1200;box-shadow:0 6px 18px rgba(255,176,32,.3)}
.btn-block{display:flex;width:100%}

/* ---------- Sections / layout ---------- */
.section{padding:64px 0}
.section-tight{padding:40px 0}
.lead{font-size:1.15rem;color:var(--muted);max-width:60ch}
.center{text-align:center}
.center .lead{margin-inline:auto}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand-2);background:rgba(54,224,192,.1);padding:.35rem .75rem;border-radius:999px;margin-bottom:1rem}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:28px}

/* ---------- Hero ---------- */
.hero{padding:72px 0 56px;text-align:center}
.hero .version-pill{display:inline-flex;align-items:center;gap:.4rem;font-weight:700;font-size:.85rem;
  color:var(--ok);background:rgba(47,208,115,.1);border:1px solid rgba(47,208,115,.3);
  padding:.4rem .9rem;border-radius:999px;margin-bottom:1.4rem}
.hero h1{margin-bottom:.4rem}
.hero .subtitle{font-size:1.4rem;font-weight:700;color:var(--brand-2);margin-bottom:1rem}
.hero .lead{margin:0 auto 2rem}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:48px}
.stat{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px 12px}
.stat b{display:block;font-size:1.7rem;line-height:1.1;font-weight:800;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat span{font-size:.85rem;color:var(--muted)}

/* ---------- Cards grid ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:border-color .15s,transform .15s}
.card:hover{border-color:var(--brand);transform:translateY(-3px)}
.card .ico{font-size:1.8rem;display:block;margin-bottom:.6rem}
.card h3{margin-bottom:.35rem}
.card p{color:var(--muted);margin:0;font-size:.96rem}

/* ---------- Steps ---------- */
.steps{counter-reset:step;display:grid;gap:16px}
.step{display:flex;gap:16px;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.step .num{flex:none;width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:800;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#0b0f1a}
.step h3{margin-bottom:.25rem}
.step p{margin:0;color:var(--muted);font-size:.96rem}
.step code{background:var(--bg-2);border:1px solid var(--border);padding:.1rem .4rem;border-radius:6px;font-size:.85em}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;min-width:480px}
th,td{padding:.85rem 1rem;text-align:left;border-bottom:1px solid var(--border)}
thead th{background:var(--panel-2);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
tbody tr:last-child td{border-bottom:0}
td.yes{color:var(--ok);font-weight:700}
td.no{color:var(--danger);font-weight:700}

/* ---------- Download cards ---------- */
.dl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dl-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px;text-align:center}
.dl-card .ico{font-size:2.4rem}
.dl-card h3{margin:.4rem 0 .2rem}
.dl-card .muted{color:var(--muted);font-size:.9rem;margin-bottom:1rem}
.dl-meta{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;margin-top:24px;color:var(--muted);font-size:.95rem}
.dl-meta b{color:var(--text)}

/* ---------- Safety / callout boxes ---------- */
.note{border-left:4px solid var(--brand);background:var(--panel);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:18px 20px;margin:1rem 0}
.note.warn{border-left-color:var(--accent)}
.note.danger{border-left-color:var(--danger)}
.note.ok{border-left-color:var(--ok)}
.note h3{margin-bottom:.3rem;font-size:1.05rem}
.note p{margin:0;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq details{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:12px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:700;padding:18px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-size:1.4rem;color:var(--brand);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details>p{padding:0 0 18px;margin:0;color:var(--muted)}

/* ---------- Status page ---------- */
.status-banner{display:flex;align-items:center;gap:18px;border-radius:var(--radius);padding:26px;border:1px solid var(--border)}
.status-banner.up{background:linear-gradient(135deg,rgba(47,208,115,.16),rgba(47,208,115,.04));border-color:rgba(47,208,115,.4)}
.status-dot{width:18px;height:18px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 6px rgba(47,208,115,.18);flex:none}
.status-banner h2{margin:0;font-size:1.5rem}
.status-banner p{margin:.2rem 0 0;color:var(--muted)}

/* ---------- Calculator ---------- */
.calc{max-width:560px;margin:0 auto}
.calc-toggle{display:flex;gap:8px;background:var(--bg-2);border:1px solid var(--border);border-radius:999px;padding:6px;margin-bottom:22px}
.calc-toggle button{flex:1;border:0;background:none;color:var(--muted);font-weight:700;padding:.7rem;border-radius:999px;cursor:pointer;font-size:.98rem}
.calc-toggle button.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#0b0f1a}
.calc label{display:block;font-weight:700;margin-bottom:.5rem}
.calc input[type=number]{width:100%;font-size:1.4rem;padding:.9rem 1rem;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid var(--border);color:var(--text)}
.calc input:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.calc-result{margin-top:22px;text-align:center;background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius);padding:26px}
.calc-result .label{color:var(--muted);font-size:.95rem}
.calc-result .value{font-size:2.6rem;font-weight:800;color:var(--brand-2);line-height:1.1}
.calc-result .sub{color:var(--muted);font-size:.95rem;margin-top:.3rem}

/* ---------- Prose (legal/info pages) ---------- */
.prose{max-width:760px}
.prose h2{margin-top:2rem}
.prose ul{padding-left:1.3rem}
.prose li{margin-bottom:.4rem}
.prose .updated{color:var(--muted);font-size:.9rem}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(135deg,rgba(108,140,255,.16),rgba(54,224,192,.1));
  border:1px solid var(--border);border-radius:var(--radius);padding:48px;text-align:center;margin:24px 0}
.cta-band h2{margin-bottom:.5rem}
.checks{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-top:18px;color:var(--muted);font-size:.95rem}
.checks span{display:inline-flex;align-items:center;gap:.4rem}

/* ---------- Breadcrumb ---------- */
.breadcrumb{font-size:.85rem;color:var(--muted);padding:18px 0 0}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--text)}

/* ---------- Footer ---------- */
.site-footer{margin-top:48px;background:var(--bg-2);border-top:1px solid var(--border)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding:56px 20px 40px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{color:var(--muted);font-size:.95rem;max-width:42ch;margin:0}
.footer-col h3{font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:1rem;font-weight:700}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.footer-col a{color:var(--text);font-size:.95rem;opacity:.85}
.footer-col a:hover{opacity:1;color:var(--brand-2);text-decoration:none}
.footer-bottom{border-top:1px solid var(--border-soft);padding:22px 20px}
.footer-bottom p{margin:0;color:var(--muted);font-size:.85rem;text-align:center}

/* ---------- Contact form ---------- */
.form-grid{display:grid;gap:16px;max-width:560px}
.form-grid label{font-weight:700;font-size:.92rem}
.form-grid input,.form-grid textarea{width:100%;padding:.75rem .9rem;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid var(--border);color:var(--text);font-family:inherit;font-size:1rem}
.form-grid textarea{min-height:140px;resize:vertical}

/* ---------- Utilities ---------- */
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.muted{color:var(--muted)}
hr{border:0;border-top:1px solid var(--border);margin:2rem 0}

/* ---------- Responsive ---------- */
@media(max-width:860px){
  .grid-3,.dl-grid{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .nav-toggle{display:flex;margin-left:auto;order:2}
  .btn-nav-cta{display:none}
  .primary-nav{position:absolute;top:66px;left:0;right:0;background:var(--bg-2);border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .25s ease;margin:0}
  .primary-nav.open{max-height:420px}
  .primary-nav ul{flex-direction:column;padding:10px 20px}
  .primary-nav a{display:block;padding:.8rem .5rem}
}
@media(max-width:480px){
  body{font-size:16px}
  .section{padding:48px 0}
  .cta-band{padding:32px 20px}
}