/* ==========================================================================
   FIRST PICK — Base
   --------------------------------------------------------------------------
   Reset moderno + fondamenta tipografiche + atmosfera di pagina.
   Richiede tokens.css. Nessun componente qui: solo il terreno di gioco.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

/* --------------------------------------------------------------------------
   Pagina e atmosfera
   -------------------------------------------------------------------------- */

body {
  min-height: 100dvh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Atmosfera (bagliore arcano + vignettatura) su layer fisso:
   background-attachment: fixed non funziona su iOS Safari */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-below);
  pointer-events: none;
  background: var(--gradient-page);
}

/* Grana sottile da "carta stampata": tessitura, non rumore visibile */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-below);
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

:focus-visible {
  outline: var(--border-width-strong) solid var(--color-focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Tipografia
   -------------------------------------------------------------------------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: var(--weight-semibold);
  color: var(--color-heading);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-wide);
  text-wrap: balance;
}

h1 {
  font-size: var(--text-h1);
}

h2 {
  font-size: var(--text-h2);
  line-height: var(--leading-snug);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-snug);
}

p {
  max-width: 65ch;
}

strong {
  color: var(--color-heading);
  font-weight: var(--weight-semibold);
}

em {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* Solo i link "nudi" nel testo: gli anchor con classe (es. .btn)
   gestiscono i propri colori senza dover combattere la cascata */
a:not([class]) {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-color: var(--color-link-underline);
  text-underline-offset: 0.2em;
  transition: color var(--transition-base), text-decoration-color var(--transition-base);
}

a:not([class]):hover {
  color: var(--color-link-hover);
  text-decoration-color: currentColor;
}

/* --------------------------------------------------------------------------
   Utility fondamentali
   -------------------------------------------------------------------------- */

.container {
  width: min(var(--container-max), 100% - var(--container-pad) * 2);
  margin-inline: auto;
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* Sezioni centrate: i paragrafi hanno max-width, quindi va centrato
   anche il loro box, non solo il testo */
.text-center {
  text-align: center;
}

.text-center p {
  margin-inline: auto;
}

/* Testo display hero: più grande di h1, oro metallico opzionale */
.display {
  font-family: var(--font-display);
  font-size: var(--text-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-wide);
  color: var(--color-heading);
  text-wrap: balance;
}

/* Oro metallico su testo (wordmark-style). Usare con parsimonia. */
.text-gold {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Etichetta maiuscola sopra i titoli (eyebrow) */
.overline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-overline);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-caps);
  text-transform: uppercase;
  color: var(--color-accent);
}

/* Sottotitolo/lead sotto i titoli */
.lead {
  font-size: var(--text-lead);
  color: var(--color-text-muted);
  line-height: var(--leading-body);
}

/* Solo screen reader */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   Motion: rispetto delle preferenze utente
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}