:root{
  --bg:#0B1020;
  --surface:#141B30;
  --surface-2:#1B2440;
  --line:#26304A;
  --text:#E8ECF4;
  --muted:#8A93A8;
  --amber:#FFC233;
  --amber-warm:#FF9E3D;
  --red:#FF5C6C;
  --cold:#5A6378;
  --radius:18px;
  --maxw:880px;
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background:
    radial-gradient(1200px 700px at 50% -200px, #182142 0%, transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"Inter",system-ui,sans-serif;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}

/* ---- topbar ---- */
.topbar{
  max-width:var(--maxw);
  margin:0 auto;
  padding:22px 20px 8px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.brand{
  font-family:"Space Grotesk",sans-serif;
  font-weight:700;font-size:20px;letter-spacing:.04em;
  display:flex;align-items:center;gap:10px;color:var(--text);
}
.filament{
  width:12px;height:12px;border-radius:50%;
  background:var(--amber);
  box-shadow:0 0 10px 2px var(--amber-warm);
}
.dev-select{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.dev-select select{
  background:var(--surface-2);color:var(--text);
  border:1px solid var(--line);border-radius:10px;
  padding:7px 10px;font-family:"JetBrains Mono",monospace;font-size:13px;
}

.wrap{max-width:var(--maxw);margin:0 auto;padding:12px 20px 40px;display:grid;gap:20px}

/* ---- HERO / lampada ---- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(180deg,var(--surface) 0%,var(--surface-2) 100%);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:40px 32px 0;
  display:grid;grid-template-columns:160px 1fr;gap:28px;align-items:center;
  transition:box-shadow .6s ease;
}
.hero[data-state="online"]{box-shadow:inset 0 0 120px -40px var(--amber-warm)}
.hero[data-state="offline"]{box-shadow:inset 0 0 120px -50px var(--red)}

.lamp{position:relative;width:160px;height:160px;display:grid;place-items:center}
.bulb{
  width:90px;height:90px;border-radius:50%;
  background:radial-gradient(circle at 38% 35%, #767f96 0%, var(--cold) 70%);
  transition:background .6s ease, box-shadow .6s ease;
}
.halo{
  position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle, var(--amber-warm) 0%, transparent 60%);
  opacity:0;transition:opacity .6s ease;
}
.hero[data-state="online"] .bulb{
  background:radial-gradient(circle at 38% 35%, #FFF1C2 0%, var(--amber) 45%, var(--amber-warm) 100%);
  box-shadow:0 0 60px 6px var(--amber-warm), 0 0 120px 30px rgba(255,158,61,.35);
  animation:breathe 3.6s ease-in-out infinite;
}
.hero[data-state="online"] .halo{opacity:.55;animation:breathe 3.6s ease-in-out infinite}
.hero[data-state="offline"] .bulb{
  background:radial-gradient(circle at 38% 35%, #3a4257 0%, #232a3d 70%);
  box-shadow:inset 0 0 24px rgba(0,0,0,.5);
}
@keyframes breathe{0%,100%{transform:scale(1)}50%{transform:scale(1.045)}}
@media (prefers-reduced-motion:reduce){
  .hero[data-state="online"] .bulb,.hero[data-state="online"] .halo{animation:none}
}

.hero-text{padding:8px 0 28px}
.eyebrow{
  font-family:"JetBrains Mono",monospace;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);margin-bottom:8px;
}
.state-word{
  font-family:"Space Grotesk",sans-serif;font-weight:700;
  font-size:clamp(30px,6vw,46px);line-height:1.02;margin:0 0 22px;letter-spacing:-.01em;
}
.hero[data-state="online"] .state-word{color:var(--amber)}
.hero[data-state="offline"] .state-word{color:var(--red)}

.readouts{display:flex;gap:32px;flex-wrap:wrap}
.ro{display:flex;flex-direction:column;gap:3px}
.ro-k{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.ro-v{font-family:"JetBrains Mono",monospace;font-size:15px;color:var(--text)}

.ecg{grid-column:1 / -1;width:100%;height:54px;display:block}

/* ---- pannello storico ---- */
.panel{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px 24px 26px;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap}
.panel-head h2{
  font-family:"Space Grotesk",sans-serif;font-weight:500;font-size:18px;margin:0;
}
.ranges{display:flex;gap:6px}
.ranges button{
  background:transparent;color:var(--muted);
  border:1px solid var(--line);border-radius:9px;
  padding:7px 13px;font-family:"JetBrains Mono",monospace;font-size:13px;cursor:pointer;
  transition:all .15s ease;
}
.ranges button:hover{color:var(--text);border-color:var(--cold)}
.ranges button.active{background:var(--amber);color:#1a1405;border-color:var(--amber);font-weight:700}
.ranges button:focus-visible{outline:2px solid var(--amber);outline-offset:2px}
.hint{font-size:12px;color:var(--muted);margin:12px 0 14px}
.chart{width:100%}

/* uPlot override (tema scuro) */
.u-axis{color:var(--muted)}
.u-legend{display:none}

.foot{
  text-align:center;color:var(--muted);font-size:12px;
  font-family:"JetBrains Mono",monospace;padding:8px 20px 40px;
}

@media (max-width:560px){
  .hero{grid-template-columns:1fr;text-align:center;padding:32px 22px 0}
  .lamp{margin:0 auto}
  .readouts{justify-content:center}
  .hero-text{padding-bottom:22px}
}