:root {
  --sfondo: #0b1220;
  --carta: #111c2f;
  --carta-2: #16233b;
  --testo: #e8eef8;
  --testo-tenue: #94a3b8;
  --bordo: #22334f;
  --sole: #f5b301;
  --verde: #2fbf71;
  --rosso: #ef4444;
  --arancio: #f59e0b;
}

@media (prefers-color-scheme: light) {
  :root {
    --sfondo: #f4f6fb;
    --carta: #ffffff;
    --carta-2: #f8fafc;
    --testo: #0f172a;
    --testo-tenue: #64748b;
    --bordo: #e2e8f0;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, system-ui, sans-serif;
  background: var(--sfondo);
  color: var(--testo);
  padding-bottom: env(safe-area-inset-bottom);
  -webkit-font-smoothing: antialiased;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: calc(env(safe-area-inset-top) + 18px) 18px 12px;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--sfondo) 92%, transparent);
  backdrop-filter: blur(10px);
  z-index: 10;
}

h1 { font-size: 20px; margin: 0; letter-spacing: -0.2px; }
.quando { font-size: 12px; color: var(--testo-tenue); }

.notifiche {
  border: 1px solid var(--bordo);
  background: var(--carta);
  color: var(--testo);
  width: 44px; height: 44px;
  border-radius: 14px;
  font-size: 20px;
  cursor: pointer;
}
.notifiche.attive { border-color: var(--verde); box-shadow: 0 0 0 2px color-mix(in srgb, var(--verde) 25%, transparent); }

main { padding: 0 18px 40px; max-width: 720px; margin: 0 auto; }

.allarmi { display: grid; gap: 10px; margin-bottom: 14px; }
.allarmi.vuoto { display: none; }
.allarme {
  border-left: 4px solid var(--rosso);
  background: color-mix(in srgb, var(--rosso) 12%, var(--carta));
  border-radius: 12px;
  padding: 12px 14px;
}
.allarme .titolo-allarme { font-weight: 650; margin-bottom: 2px; }
.allarme .testo-allarme { font-size: 14px; color: var(--testo-tenue); }

.riquadri { display: grid; grid-template-columns: 1.4fr 1fr; gap: 12px; }
.riquadro {
  background: var(--carta);
  border: 1px solid var(--bordo);
  border-radius: 18px;
  padding: 18px;
  text-align: center;
}
.etichetta { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--testo-tenue); }
.numero { font-size: 44px; font-weight: 700; line-height: 1.1; margin-top: 6px; font-variant-numeric: tabular-nums; }
.numero.piccolo { font-size: 32px; }
.unita { font-size: 13px; color: var(--testo-tenue); }
.riquadro.grande .numero { color: var(--sole); }

.siti { display: grid; gap: 12px; margin-top: 14px; }
.sito {
  background: var(--carta);
  border: 1px solid var(--bordo);
  border-radius: 18px;
  overflow: hidden;
}
.sito header {
  position: static;
  padding: 14px 16px 10px;
  background: transparent;
  backdrop-filter: none;
}
.sito .nome { font-size: 16px; font-weight: 650; }
.sito .watt { font-size: 16px; font-weight: 650; color: var(--sole); font-variant-numeric: tabular-nums; }
.sito .oggi { font-size: 12px; color: var(--testo-tenue); }

.inverter { display: grid; gap: 1px; background: var(--bordo); }
.riga {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 10px;
  align-items: center;
  padding: 11px 16px;
  background: var(--carta-2);
  font-size: 14px;
}
.riga .spia {
  width: 9px; height: 9px; border-radius: 50%;
  display: inline-block; margin-right: 8px;
  background: var(--verde);
}
.riga.muto .spia { background: var(--rosso); }
.riga.fermo .spia { background: var(--arancio); }
.riga .valore { font-variant-numeric: tabular-nums; font-weight: 600; }
.riga .gradi { color: var(--testo-tenue); font-size: 13px; min-width: 48px; text-align: right; }

.collegamenti { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }
.bottone {
  display: block;
  text-align: center;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid var(--bordo);
  background: var(--sole);
  color: #1a1300;
  font-weight: 650;
  font-size: 15px;
  text-decoration: none;
  cursor: pointer;
  font-family: inherit;
}
.bottone.secondario { background: var(--carta); color: var(--testo); }

.storico { margin-top: 26px; }
.storico h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--testo-tenue); }
.storico ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.storico li {
  background: var(--carta);
  border: 1px solid var(--bordo);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 14px;
}
.storico li .data { color: var(--testo-tenue); font-size: 12px; }
.storico li.rientro { border-left: 3px solid var(--verde); }
.storico li.allarme { border-left: 3px solid var(--rosso); }
.storico li.niente { color: var(--testo-tenue); }

.messaggio {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 20px);
  transform: translateX(-50%) translateY(20px);
  background: var(--testo);
  color: var(--sfondo);
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  max-width: 90vw;
  text-align: center;
}
.messaggio.visibile { opacity: 1; transform: translateX(-50%) translateY(0); }