/* X39 Mining — estilo premium de infraestructura Bitcoin.
   Negro grafito · naranja Bitcoin · azul petróleo · verde técnico. */
:root{
  --bg:#0b0d10;
  --bg-2:#111419;
  --card:#14181e;
  --card-2:#171c23;
  --border:#232a33;
  --border-soft:#1b2129;
  --text:#e9edf2;
  --muted:#8b97a6;
  --accent:#f7931a;          /* naranja Bitcoin */
  --accent-soft:#f7931a22;
  --petrol:#2a9d9b;          /* azul petróleo */
  --green:#3fbf7f;           /* verde técnico */
  --red:#e15b5b;
  --amber:#e8b04b;
  --glow:0 0 0 1px #f7931a22, 0 8px 40px -16px #f7931a55;
  --radius:16px;
  --maxw:1120px;
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:
    radial-gradient(900px 500px at 80% -10%, #f7931a10, transparent 60%),
    radial-gradient(700px 400px at 0% 0%, #2a9d9b12, transparent 55%);
  background-attachment:fixed;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .4em}
h1{font-size:clamp(2rem,5vw,3.4rem);letter-spacing:-.02em;font-weight:800}
h2{font-size:clamp(1.5rem,3vw,2rem);font-weight:700}
.muted{color:var(--muted)}
.small{font-size:.86rem}
.accent{color:var(--accent)}
.mt{margin-top:2.5rem}
.skip{position:absolute;left:-999px}
.skip:focus{left:12px;top:12px;background:var(--accent);color:#000;padding:8px 12px;border-radius:8px;z-index:50}

/* Header */
.site-header{position:sticky;top:0;z-index:30;backdrop-filter:blur(10px);
  background:#0b0d10cc;border-bottom:1px solid var(--border-soft)}
.header-inner{display:flex;align-items:center;gap:20px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--accent),#c9760f);color:#000;font-weight:800;font-size:19px;
  box-shadow:var(--glow)}
.brand-text strong{display:block;font-size:1rem;letter-spacing:.12em}
.brand-text small{display:block;color:var(--muted);font-size:.64rem;letter-spacing:.28em}
.main-nav{margin-left:auto;display:flex;gap:22px}
.main-nav a{color:var(--muted);font-size:.92rem;font-weight:500}
.main-nav a:hover{color:var(--text);text-decoration:none}
.lang{display:flex;gap:4px;border:1px solid var(--border);border-radius:9px;padding:3px}
.lang button{background:none;border:0;color:var(--muted);font:inherit;font-size:.8rem;
  font-weight:600;padding:5px 9px;border-radius:6px;cursor:pointer}
.lang button.active{background:var(--accent);color:#000}

/* Hero */
.hero{padding:72px 16px 40px}
.eyebrow{color:var(--petrol);
  font-weight:600;font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;margin:0 0 14px}
.eyebrow .dot{display:inline-block;vertical-align:middle;margin-right:8px}
.hero h1{max-width:16ch;background:linear-gradient(180deg,#fff,#c6cfd9);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.lead{max-width:60ch;font-size:1.12rem;color:#c3ccd6;margin:.4em 0 1.6em}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem;
  padding:12px 20px;border-radius:11px;border:1px solid transparent;cursor:pointer;transition:.15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--accent);color:#000;box-shadow:var(--glow)}
.btn-primary:hover{background:#ffa12e}
.btn-ghost{background:#ffffff08;border-color:var(--border);color:var(--text)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.hero-chips{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:12px;padding:0;margin:0 0 18px}
.hero-chips li{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px 18px}
.chip-k{display:block;color:var(--muted);font-size:.74rem;text-transform:uppercase;letter-spacing:.08em}
.chip-v{display:block;font-size:1.5rem;font-weight:800;margin-top:4px}
.hero-note{color:var(--muted);font-size:.9rem;max-width:70ch}

/* Sections */
.section{padding:48px 16px;border-top:1px solid var(--border-soft)}
.section-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px;margin-bottom:22px}
.section-head p{margin:0;max-width:70ch}

/* Status banner */
.status-banner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  background:var(--card);border:1px solid var(--border);border-radius:14px;padding:14px 18px;margin-bottom:20px}
.status-pill{display:inline-flex;align-items:center;gap:10px;font-weight:700}
.dot{width:10px;height:10px;border-radius:50%;background:var(--muted);box-shadow:0 0 0 4px #ffffff0a}
.status-banner[data-state="online"] .dot{background:var(--green);box-shadow:0 0 0 4px #3fbf7f22;animation:pulse 2s infinite}
.status-banner[data-state="degraded"] .dot{background:var(--amber);box-shadow:0 0 0 4px #e8b04b22}
.status-banner[data-state="offline"] .dot{background:var(--red);box-shadow:0 0 0 4px #e15b5b22}
.hero[data-state="online"] .dot{background:var(--green);box-shadow:0 0 0 4px #3fbf7f22;animation:pulse 2s infinite}
.hero[data-state="degraded"] .dot{background:var(--amber);box-shadow:0 0 0 4px #e8b04b22}
.hero[data-state="offline"] .dot{background:var(--red);box-shadow:0 0 0 4px #e15b5b22}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}

/* Grid + cards */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden}
.card h3,.card h4{font-size:1.02rem}
.card-accent{background:linear-gradient(180deg,var(--card-2),var(--card));border-color:#f7931a33}
.card-accent::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;
  background:linear-gradient(90deg,var(--accent),transparent)}
.bignum{font-size:2.4rem;font-weight:800;letter-spacing:-.02em;margin:.1em 0 .2em;color:var(--accent)}
.kv{display:grid;grid-template-columns:1fr auto;gap:8px 14px;margin:14px 0 0}
.kv.compact{grid-template-columns:repeat(4,1fr);text-align:center;gap:10px}
.kv.compact dt{color:var(--muted);font-size:.74rem}
.kv.compact dd{margin:0;font-weight:700}
.kv dt{color:var(--muted);font-size:.9rem}
.kv dd{margin:0;font-weight:600;text-align:right}
.kv.compact dt,.kv.compact dd{text-align:center}

/* Badges */
.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:3px 9px;border-radius:999px;
  letter-spacing:.04em;text-transform:uppercase;border:1px solid}
.badge-ok{color:var(--green);border-color:#3fbf7f55;background:#3fbf7f14}
.badge-testing{color:var(--amber);border-color:#e8b04b55;background:#e8b04b14}
.badge-pending{color:var(--muted);border-color:var(--border);background:#ffffff08}
.badge-online{color:var(--green);border-color:#3fbf7f55;background:#3fbf7f14}
.badge-offline{color:var(--red);border-color:#e15b5b55;background:#e15b5b14}

/* Charts */
.charts canvas{width:100%;height:160px;display:block}
.chart-empty{margin:.6em 0 0}
.range-switch,.range-switch~*{}
.range-switch{display:flex;gap:4px;border:1px solid var(--border);border-radius:9px;padding:3px}
.range-switch button{background:none;border:0;color:var(--muted);font:inherit;font-weight:600;
  font-size:.82rem;padding:5px 12px;border-radius:6px;cursor:pointer}
.range-switch button.active{background:var(--petrol);color:#06211f}

/* Params + devices */
.params{display:flex;flex-direction:column;gap:14px;align-items:flex-start}
.params-table{width:100%;border-collapse:collapse}
.params-table th,.params-table td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border-soft);vertical-align:top}
.params-table th{color:var(--muted);font-weight:600;width:200px}
.params-table td{font-family:ui-monospace,'SF Mono',Menlo,Consolas,monospace;font-size:.92rem}
.copy-ok{color:var(--green);font-weight:600;font-size:.86rem}
.devices .card h3,.trans .card h3{margin-top:10px}

/* Warn / notices */
.warn{border-color:#f7931a44;background:linear-gradient(180deg,#1b150c,#14120d)}
.warn strong{display:block;color:var(--accent);margin-bottom:6px}
.warn p{margin:0;color:#d6ccbe}

/* FAQ */
.faq details{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:4px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--accent);font-weight:800;margin-right:10px}
.faq details[open] summary::before{content:"–"}
.faq p{margin:0 0 14px;color:var(--muted)}

/* Footer */
.site-footer{border-top:1px solid var(--border-soft);padding:32px 16px 48px;margin-top:20px}
.site-footer p{margin:.3em 0}
.site-footer code{background:#ffffff0c;padding:2px 7px;border-radius:6px;font-size:.85rem}

@media (max-width:720px){
  .main-nav{display:none}
  .hero{padding:48px 16px 28px}
  .kv.compact{grid-template-columns:repeat(2,1fr)}
  .params-table th{width:auto}
}