:root {
  --bg: #f3f1ec; --carta: #ffffff; --carta-2: #ebe8e1; --testo: #1b1d21; --muto: #6b6e75;
  --bordo: #dcd8cf; --accento: #b4690e; --accento-bg: #f6e6cc; --ok: #2f7d4f; --err: #b3372f;
  --ombra: 0 1px 2px rgba(0,0,0,.06), 0 6px 18px rgba(0,0,0,.05);
  --raggio: 20px; --hold-ms: 900ms;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a; --carta: #1f2227; --carta-2: #2a2e35; --testo: #ecebe7; --muto: #9a9ea6;
    --bordo: #33373f; --accento: #e0a04a; --accento-bg: #3a2c15; --ok: #5fc08a; --err: #ee7a70;
    --ombra: 0 1px 2px rgba(0,0,0,.4);
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--testo);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { min-height: 100dvh; padding: env(safe-area-inset-top) 0 0; }
main { max-width: 560px; margin: 0 auto; padding: 16px 16px 96px; }
h1 { font-size: 1.5rem; margin: 8px 0 4px; }
h2 { font-size: 1rem; margin: 24px 0 8px; color: var(--muto); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
p { margin: 6px 0; }
.muto { color: var(--muto); }
button { font: inherit; color: inherit; }

.testa { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.testa small { color: var(--muto); }
.banner { background: var(--accento-bg); color: var(--accento); border-radius: 12px; padding: 10px 14px; margin: 0 0 12px; font-size: .9rem; }

.griglia { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.card { position: relative; overflow: hidden; background: var(--carta); border: 1px solid var(--bordo);
  border-radius: var(--raggio); box-shadow: var(--ombra); min-height: 128px; padding: 14px;
  display: flex; flex-direction: column; justify-content: space-between; text-align: left;
  cursor: pointer; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; touch-action: manipulation; }
.card[disabled] { opacity: .55; cursor: default; }
.card .icona { font-size: 1.9rem; line-height: 1; }
.card .nome { font-weight: 600; }
.card .sotto { color: var(--muto); font-size: .85rem; min-height: 1.2em; }
.card.acceso { background: var(--accento-bg); border-color: var(--accento); }
.card.acceso .sotto { color: var(--accento); }
.card.sensore { cursor: default; }
.card .valore { font-size: 2.2rem; font-weight: 700; letter-spacing: -.02em; }
.card .valore small { font-size: 1rem; color: var(--muto); font-weight: 500; margin-left: 2px; }
.barra { height: 6px; border-radius: 3px; background: var(--carta-2); overflow: hidden; }
.barra > i { display: block; height: 100%; background: var(--ok); transition: width .4s; }
.card.largo { grid-column: 1 / -1; min-height: 110px; }
.card .lucchetto { position: absolute; top: 12px; right: 12px; font-size: .8rem; color: var(--muto); }

/* riempimento mentre si tiene premuto */
.card .riempi { position: absolute; inset: auto 0 0 0; height: 0; background: var(--accento); opacity: .22; pointer-events: none; }
.card.premendo .riempi { animation: riempi var(--hold-ms) linear forwards; }
@keyframes riempi { to { height: 100%; } }
.card.premendo { border-color: var(--accento); transform: scale(.985); }
.card.esito-ok { border-color: var(--ok); }
.card.esito-ok .sotto { color: var(--ok); }
.card.esito-err { border-color: var(--err); }
.card.esito-err .sotto { color: var(--err); }

.btn { display: block; width: 100%; padding: 16px; border-radius: 16px; border: 0; font-weight: 600;
  background: var(--accento); color: #fff; cursor: pointer; margin: 16px 0 8px; font-size: 1.05rem; }
.btn.sec { background: var(--carta-2); color: var(--testo); }
.btn[disabled] { opacity: .5; }
.centro { text-align: center; padding-top: 14vh; }
.centro .grande { font-size: 4rem; }

.elenco { background: var(--carta); border: 1px solid var(--bordo); border-radius: 16px; overflow: hidden; }
.riga { display: flex; justify-content: space-between; gap: 12px; padding: 12px 14px; border-top: 1px solid var(--bordo); }
.riga:first-child { border-top: 0; }
.riga .quando { color: var(--muto); font-size: .8rem; white-space: nowrap; }
.riga .esito-ok { color: var(--ok); } .riga .esito-no { color: var(--err); }
.riga .sub { color: var(--muto); font-size: .85rem; }
.riga button { background: none; border: 0; color: var(--err); cursor: pointer; padding: 0 4px; }

nav { position: fixed; left: 0; right: 0; bottom: 0; display: flex; justify-content: center;
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px);
  border-top: 1px solid var(--bordo); padding: 6px 8px calc(6px + env(safe-area-inset-bottom)); }
nav button { flex: 1; max-width: 180px; background: none; border: 0; padding: 8px 4px; color: var(--muto);
  font-size: .78rem; cursor: pointer; border-radius: 12px; }
nav button span { display: block; font-size: 1.35rem; }
nav button.on { color: var(--accento); }

#toast { position: fixed; left: 50%; bottom: calc(86px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: var(--testo); color: var(--bg); padding: 10px 16px; border-radius: 14px; font-size: .92rem;
  max-width: 90vw; box-shadow: var(--ombra); z-index: 10; }
@media (prefers-reduced-motion: reduce) { .card.premendo .riempi { animation-duration: 1ms; } .barra > i { transition: none; } }