:root {
  --sfondo: #f4f5f7; --scheda: #fff; --testo: #1d2330; --tenue: #667085;
  --bordo: #d9dde3; --accento: #1f6feb; --accento-testo: #fff; --errore: #c62828; --ok: #2e7d32;
  --barra: #1f6feb33;
  /* Grafici: colori delle serie, griglia e asse */
  --serie-1: #2a78d6; --serie-2: #eb6834; --serie-3: #1baf7a; --serie-4: #eda100;
  --serie-5: #e87ba4; --serie-6: #008300; --serie-7: #6250d6; --serie-altre: #a3a29b;
  --griglia: #e1e0d9; --asse: #c3c2b7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --sfondo: #14171c; --scheda: #1e232b; --testo: #e6e9ef; --tenue: #98a2b3;
    --bordo: #333a45; --accento: #4c8dff; --errore: #ef5350; --ok: #66bb6a; --barra: #4c8dff40;
    --serie-1: #3987e5; --serie-2: #d95926; --serie-3: #199e70; --serie-4: #c98500;
    --serie-5: #d55181; --serie-6: #008300; --serie-7: #9085e9; --serie-altre: #6b6a64;
    --griglia: #2c2f36; --asse: #444a55;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
       background: var(--sfondo); color: var(--testo); }
header { display: flex; justify-content: space-between; align-items: center;
         padding: 12px 16px; max-width: 760px; margin: 0 auto; }
header h1 { margin: 0; font-size: 1.4rem; }
header a { color: var(--tenue); padding: 8px 0 8px 16px; }
main { max-width: 760px; margin: 0 auto; padding: 0 16px 32px; }
.scheda { background: var(--scheda); border: 1px solid var(--bordo); border-radius: 12px;
          padding: 4px 16px 16px; margin-bottom: 16px; }
summary { font-weight: 600; font-size: 1.15rem; padding: 12px 0; cursor: pointer; }
label { display: block; margin: 10px 0; font-size: .9rem; color: var(--tenue); min-width: 0; }
input, select { display: block; width: 100%; max-width: 100%; min-width: 0; min-height: 44px; margin-top: 4px;
                padding: 10px; font: inherit; color: var(--testo); background: var(--sfondo);
                border: 1px solid var(--bordo); border-radius: 8px; }
/* Il campo data su iPhone ha una larghezza propria: lo si forza dentro il riquadro */
input[type="date"] { -webkit-appearance: none; appearance: none; text-align: left; }
input[type="date"]::-webkit-date-and-time-value { text-align: left; }
button, .bottone { display: inline-block; width: 100%; min-height: 44px; margin-top: 12px; padding: 12px; font: inherit;
                   font-weight: 600; text-align: center; text-decoration: none; border: 0; border-radius: 8px;
                   background: var(--accento); color: var(--accento-testo); cursor: pointer; }
.secondario { background: transparent; color: var(--accento); border: 1px solid var(--accento); }
.pericolo { background: transparent; color: var(--errore); border: 1px solid var(--errore); }
.due { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; }
@media (max-width: 480px) {
  .due:not(.filtri) { grid-template-columns: minmax(0, 1fr); gap: 0; }
}
#esito { min-height: 1.4em; margin: 8px 0 0; }
.ok { color: var(--ok); } .errore { color: var(--errore); }
.totale { font-size: 1.2rem; margin: 8px 0; }
h3 { margin: 20px 0 8px; font-size: 1rem; }
.barre .riga { position: relative; display: flex; justify-content: space-between; gap: 8px; padding: 6px 8px;
               margin-bottom: 4px; border-radius: 6px; overflow: hidden; }
.barre .riga span { position: relative; }
.barre .riga span:last-child { white-space: nowrap; }
.barre .riga i { position: absolute; inset: 0 auto 0 0; background: var(--barra); }

/* Elenco spese a schede */
.spese { display: grid; gap: 8px; }
.spesa { border: 1px solid var(--bordo); border-radius: 10px; padding: 10px 12px; }
.spesa .testa { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.spesa .data { color: var(--tenue); font-size: .9rem; }
.spesa .importo { font-weight: 700; font-size: 1.15rem; white-space: nowrap; }
.spesa .info { font-size: .95rem; }
.spesa .descr { margin: 2px 0 0; color: var(--tenue); overflow-wrap: anywhere; }
.azioni { display: flex; gap: 8px; margin-top: 10px; }
.azioni button { flex: 1; margin: 0; padding: 8px; }

/* Riquadro di modifica */
dialog { width: min(100% - 24px, 440px); max-height: calc(100% - 24px); padding: 16px; border: 1px solid var(--bordo);
         border-radius: 12px; background: var(--scheda); color: var(--testo); }
dialog::backdrop { background: rgba(0, 0, 0, .5); }
dialog h2 { margin: 0 0 4px; font-size: 1.15rem; }
#esito-modifica:empty { display: none; }

/* Grafici */
.grafico { display: block; width: 100%; height: auto; overflow: visible; }
.grafico text { font: 11px system-ui, -apple-system, "Segoe UI", sans-serif; }
.grafico .asse { fill: var(--tenue); font-variant-numeric: tabular-nums; }
.grafico .centro-piccolo { fill: var(--tenue); font-size: 12px; }
.grafico .centro-grande { fill: var(--testo); font-size: 18px; font-weight: 700; }
.ciambella { display: grid; grid-template-columns: minmax(0, 200px) minmax(0, 1fr); gap: 16px; align-items: center; }
@media (max-width: 480px) {
  .ciambella { grid-template-columns: minmax(0, 1fr); }
  .ciambella .grafico { max-width: 220px; margin: 0 auto; }
}
.legenda { list-style: none; margin: 0; padding: 0; font-size: .9rem; }
.legenda li { display: grid; grid-template-columns: 12px minmax(0, 1fr) auto auto; gap: 8px; align-items: center; padding: 3px 0; }
.legenda i { width: 12px; height: 12px; border-radius: 3px; }
.legenda .perc { color: var(--tenue); font-variant-numeric: tabular-nums; }
.legenda li span:last-child { white-space: nowrap; font-variant-numeric: tabular-nums; }
#suggerimento { position: fixed; z-index: 10; pointer-events: none; padding: 6px 10px; border-radius: 6px;
                background: var(--testo); color: var(--scheda); font-size: .85rem; white-space: nowrap; }

.centro { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login { width: 100%; max-width: 340px; padding: 24px; }
.login h1 { margin-top: 0; }