:root {
  --fondo: #EEF1F4;
  --inchiostro: #1F2A33;
  --accento: #5B7F95;
  --linea: #C9D3DB;
  --secondario: #5E6B75;
  --su-accento: #EEF1F4;
  --misura-pollice: 44px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fondo: #12181D;
    --inchiostro: #E4E9ED;
    --accento: #8FB3C7;
    --linea: #2A343C;
    --secondario: #93A1AC;
    --su-accento: #12181D;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--inchiostro);
  font-family: 'Bricolage Grotesque', ui-sans-serif, system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 1.3;
  -webkit-tap-highlight-color: transparent;
}
main {
  max-width: 30rem;
  min-height: 100vh;
  min-height: 100dvh;
  padding:
    max(20px, env(safe-area-inset-top))
    max(20px, env(safe-area-inset-right))
    max(20px, env(safe-area-inset-bottom))
    max(20px, env(safe-area-inset-left));
}

.solo-lettori {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.ora { margin: 0; font-size: 15px; color: var(--secondario); }

/* Il numerale: l'unico elemento che si fa notare. Il peso segue il voto da 200 a 800. */
.numero {
  --peso: 200;
  margin: 4px 0 0 -0.04em;
  position: relative;
  font-size: clamp(10rem, 58vw, 15rem);
  font-weight: var(--peso);
  font-optical-sizing: auto;
  line-height: 0.82;
  letter-spacing: -0.03em;
  height: 0.82em;
  color: var(--inchiostro);
  transition: font-weight 0.2s ease;
  user-select: none;
  -webkit-user-select: none;
}

/* Prima del primo tocco: al posto del numero una lineetta sottile, nessun valore suggerito. */
.numero.vuoto { color: transparent; }
.numero.vuoto::after {
  content: ''; position: absolute; left: 0.07em; top: 0.4em; width: 0.38em; height: 3px;
  background: var(--inchiostro);
}

/* Il cursore */
.cursore { position: relative; height: var(--misura-pollice); margin-top: 8px; }
.cursore::before { /* la linea */
  content: ''; position: absolute; left: calc(var(--misura-pollice) / 2); right: calc(var(--misura-pollice) / 2);
  top: 50%; height: 2px; margin-top: -1px; background: var(--linea);
}
.cursore::after { /* il tratto già percorso */
  content: ''; position: absolute; left: calc(var(--misura-pollice) / 2);
  width: calc(var(--p, 0) * (100% - var(--misura-pollice)));
  top: 50%; height: 2px; margin-top: -1px; background: var(--accento);
  opacity: 0; transition: opacity 0.15s ease;
}
.cursore[data-toccato='si']::after { opacity: 1; }
.tacche { position: absolute; inset: 0; pointer-events: none; }
.tacche i {
  position: absolute; top: 50%; width: 1px; height: 12px; margin: -6px 0 0 -0.5px;
  left: calc(var(--misura-pollice) / 2 + var(--i) * (100% - var(--misura-pollice)) / 9);
  background: var(--secondario);
}
.cursore input[type='range'] {
  position: relative; z-index: 1;
  display: block; width: 100%; height: var(--misura-pollice); margin: 0; padding: 0;
  background: transparent; -webkit-appearance: none; appearance: none; touch-action: pan-y;
  border-radius: 999px; cursor: pointer;
}
.cursore input[type='range']:focus { outline: none; }
.cursore input[type='range']::-webkit-slider-runnable-track { height: var(--misura-pollice); background: transparent; border: 0; }
.cursore input[type='range']::-moz-range-track { height: var(--misura-pollice); background: transparent; border: 0; }
.cursore input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; box-sizing: border-box;
  width: var(--misura-pollice); height: var(--misura-pollice); border: 0; border-radius: 50%;
  background: radial-gradient(circle closest-side, var(--accento) 0, var(--accento) 13px, transparent 14px);
}
.cursore input[type='range']::-moz-range-thumb {
  box-sizing: border-box; width: var(--misura-pollice); height: var(--misura-pollice); border: 0; border-radius: 50%;
  background: radial-gradient(circle closest-side, var(--accento) 0, var(--accento) 13px, transparent 14px);
}
/* Non ancora toccato: solo un anello vuoto, nessun valore suggerito. */
.cursore[data-toccato='no'] input[type='range']::-webkit-slider-thumb {
  background: radial-gradient(circle closest-side, transparent 0, transparent 10.5px, var(--accento) 11px, var(--accento) 13px, transparent 13.6px);
}
.cursore[data-toccato='no'] input[type='range']::-moz-range-thumb {
  background: radial-gradient(circle closest-side, transparent 0, transparent 10.5px, var(--accento) 11px, var(--accento) 13px, transparent 13.6px);
}
/* Focus da tastiera: un secondo anello attorno al pollice. */
.cursore input[type='range']:focus-visible::-webkit-slider-thumb { background: radial-gradient(circle closest-side, var(--accento) 0, var(--accento) 12px, transparent 12.5px, transparent 17px, var(--accento) 17.5px, var(--accento) 19.5px, transparent 20px); }
.cursore input[type='range']:focus-visible::-moz-range-thumb { background: radial-gradient(circle closest-side, var(--accento) 0, var(--accento) 12px, transparent 12.5px, transparent 17px, var(--accento) 17.5px, var(--accento) 19.5px, transparent 20px); }
.cursore[data-toccato='no'] input[type='range']:focus-visible::-webkit-slider-thumb { background: radial-gradient(circle closest-side, transparent 0, transparent 8.5px, var(--accento) 9px, var(--accento) 11px, transparent 11.5px, transparent 17px, var(--accento) 17.5px, var(--accento) 19.5px, transparent 20px); }
.cursore[data-toccato='no'] input[type='range']:focus-visible::-moz-range-thumb { background: radial-gradient(circle closest-side, transparent 0, transparent 8.5px, var(--accento) 9px, var(--accento) 11px, transparent 11.5px, transparent 17px, var(--accento) 17.5px, var(--accento) 19.5px, transparent 20px); }
.estremi { position: relative; height: 18px; margin-top: 2px; font-size: 13px; color: var(--secondario); }
.estremi span { position: absolute; top: 0; transform: translateX(-50%); }
.estremi span:first-child { left: calc(var(--misura-pollice) / 2); }
.estremi span:last-child { left: calc(100% - var(--misura-pollice) / 2); }

/* I tre campi */
.campi { margin-top: 18px; }
.campo {
  display: grid; grid-template-columns: 4.75rem 1fr; align-items: center;
  min-height: 48px; border-bottom: 1px solid var(--linea);
}
.campo span { font-size: 15px; color: var(--secondario); }
.campo input {
  width: 100%; min-width: 0; height: 48px; margin: 0; padding: 0;
  border: 0; border-radius: 0; background: transparent; -webkit-appearance: none; appearance: none;
  color: var(--inchiostro); font: inherit; font-size: 17px;
}
.campo input::placeholder { color: var(--secondario); opacity: 1; }
.campo input:focus { outline: none; }
.campo:focus-within { border-bottom-color: var(--accento); box-shadow: 0 1px 0 var(--accento); }

/* Il pulsante */
#salva {
  display: block; width: 100%; height: 56px; margin: 22px 0 0; padding: 0;
  border: 0; border-radius: 12px; cursor: pointer;
  background: var(--accento); color: var(--su-accento);
  font: inherit; font-size: 20px; font-weight: 700; /* 20px in grassetto conta come testo grande: contrasto 3,8 su 3 richiesto */
  -webkit-appearance: none; appearance: none;
  transition: opacity 0.15s ease;
}
#salva:active:not(:disabled) { opacity: 0.85; }
#salva:disabled { background: var(--linea); color: var(--secondario); cursor: default; font-weight: 500; }
#salva:focus-visible, .notifiche button:focus-visible { outline: 2px solid var(--inchiostro); outline-offset: 3px; }

.esito { min-height: 2.8em; margin: 10px 0 0; font-size: 15px; line-height: 1.4; color: var(--secondario); }
.esito.errore { color: var(--inchiostro); font-weight: 600; }

/* La striscia di oggi */
.oggi { margin-top: 18px; }
.striscia {
  position: relative; height: 52px;
  border-bottom: 1px solid var(--secondario);
}
.punti { position: absolute; inset: 0; }
.punto {
  position: absolute; width: 8px; height: 8px; border-radius: 50%; background: var(--accento);
  left: calc(var(--x) * (100% - 8px));
  bottom: calc(var(--y) * (100% - 8px - 2px) + 2px);
}
.punto.nuovo { animation: compare 0.32s ease-out both; }
@keyframes compare { from { transform: scale(0); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.ore { display: flex; justify-content: space-between; margin-top: 3px; font-size: 12px; color: var(--secondario); }

/* Le domande (notifiche) */
.notifiche {
  margin-top: 16px; font-size: 14px; line-height: 1.4; color: var(--secondario);
}
.notifiche button {
  display: inline-block; margin-top: 6px; padding: 10px 0; border: 0; background: none; cursor: pointer;
  font: inherit; font-size: 15px; font-weight: 600; color: var(--inchiostro);
  text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--accento);
}

@media (prefers-reduced-motion: reduce) {
  .numero, .cursore::after, #salva { transition: none; }
  .punto.nuovo { animation: none; }
}