/* facciamoiconti · Base v2, mobile-first.
   Reset, tipografia di fondo, impianto del foglio, accessibilita. Nessun componente qui. */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Un display esplicito su una classe batte l attributo hidden: senza questa riga ogni blocco
   nascosto con [hidden] e vestito con flex o grid resterebbe visibile. */
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--h-barra) + var(--sp-4));
  color-scheme: dark;
}

body {
  min-height: 100dvh;
  background: var(--c-bg);
  color: var(--c-dim);
  font-family: var(--font-ui);
  font-size: var(--fs-body);
  line-height: var(--lh-relaxed);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ---- tipografia ------------------------------------------------------- */

h1, h2, h3 {
  color: var(--c-ink);
  font-weight: 600;
  line-height: var(--lh-snug);
  letter-spacing: var(--ls-title);
  text-wrap: balance;
}

h1 { font-size: var(--fs-h1); font-weight: 700; line-height: var(--lh-tight); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-body); }

p { text-wrap: pretty; }
strong, b { color: var(--c-ink); font-weight: 600; }
small { font-size: var(--fs-note); }

a {
  color: var(--c-dim);
  text-decoration: underline;
  text-decoration-color: var(--c-linea-ctrl);
  text-underline-offset: 3px;
  transition: color var(--t-fast) var(--ease), text-decoration-color var(--t-fast) var(--ease);
}
a:hover { color: var(--c-ink); text-decoration-color: var(--c-brand); }

ul, ol { list-style: none; }

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }

img, svg { display: block; max-width: 100%; }

/* I numeri sono il prodotto: mono tabulare, virgola incolonnata fra righe della stessa tabella. */
.num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: var(--ls-num);
}

/* L unico maiuscoletto del sito: le intestazioni di colonna del registro. Non e un occhiello. */
.micro {
  font-size: var(--fs-micro);
  font-weight: 600;
  letter-spacing: var(--ls-micro);
  text-transform: uppercase;
  color: var(--c-muted);
}

/* ---- accessibilita ---------------------------------------------------- */

.salta {
  position: absolute;
  left: var(--sp-2);
  top: -80px;
  z-index: calc(var(--z-barra) + 1);
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-brand);
  color: var(--c-on-brand);
  border-radius: var(--r-sm);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--t-base) var(--ease);
}
.salta:focus { top: var(--sp-2); }

:where(a, button, input, select, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--c-brand);
  outline-offset: 2px;
  border-radius: var(--r-sm);
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ---- impianto: il foglio ---------------------------------------------- */

.pagina {
  width: 100%;
  max-width: var(--w-foglio);
  margin-inline: auto;
  padding-inline: var(--sp-3);
}
@media (min-width: 560px) { .pagina { padding-inline: var(--sp-6); } }

.prosa { max-width: var(--w-prosa); }

/* ---- movimento --------------------------------------------------------- */

@keyframes entra-su {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}
@keyframes lampo {
  0%   { color: var(--c-brand); }
  100% { color: inherit; }
}

.anim-entra { animation: entra-su var(--t-slow) var(--ease) both; }

/* Il contenuto non e mai nascosto in attesa di un animazione: si vede anche se non parte mai. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

/* ---- stampa: questi conti si stampano e si mandano al commercialista ---- */

@media print {
  :root {
    --c-bg: #fff; --c-foglio: #fff; --c-riga: #f2f2f2; --c-campo: #fff;
    --c-ink: #000; --c-dim: #1a1a1a; --c-muted: #444;
    --c-linea: #c8c8c8; --c-linea-forte: #666; --c-linea-ctrl: #888;
    --c-brand: #000; --c-owe: #000; --c-alert: #000;
    --c-brand-dim: transparent; --c-owe-dim: transparent; --c-alert-dim: transparent;
  }
  html { color-scheme: light; }
  body { background: #fff; color: #000; font-size: 10.5pt; }
  .no-print, .salta { display: none !important; }
  a { color: #000; }
  h1, h2 { break-after: avoid; }
  table, tr { break-inside: avoid; }
}