/* ============================================================
   FirenzeMeteo — Base: reset leggero, tipografia, layout primitives
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

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

body {
  font-family: var(--font-sans);
  font-size: var(--fs-400);
  line-height: var(--lh-body);
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--c-cyan-600); text-decoration: none; }
a:hover { color: var(--c-blue-700); }
button { font: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: var(--lh-tight);
  color: var(--c-blue-900);
  font-weight: 800;
  letter-spacing: -.01em;
}
h1 { font-size: var(--fs-900); }
h2 { font-size: var(--fs-800); }
h3 { font-size: var(--fs-600); }

/* --- Layout primitives --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gap);
}
.section { padding-block: clamp(2rem, 5vw, 3.5rem); }
.stack > * + * { margin-top: var(--sp-4); }
.grid { display: grid; gap: var(--gap); }

/* Accessibilità */
:focus-visible { outline: 3px solid var(--c-cyan-400); outline-offset: 2px; border-radius: 4px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}