:root {
  --sfondo: #f4f6f9;
  --card: #ffffff;
  --testo: #1b2430;
  --tenue: #5f6b7a;
  --accento: #1e3a5f;
  --bordo: #dde3ea;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --sfondo: #11161d;
    --card: #1a212b;
    --testo: #e6ebf1;
    --tenue: #9aa6b4;
    --accento: #5b9bd5;
    --bordo: #2a3440;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 48px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--sfondo);
  color: var(--testo);
  line-height: 1.5;
}

header, main, .aiuto {
  max-width: 720px;
  margin: 0 auto;
}

header { padding: 40px 0 24px; }
header h1 { margin: 0 0 4px; font-size: 1.8rem; }
header p { margin: 0; color: var(--tenue); }

.app {
  display: flex;
  gap: 16px;
  padding: 20px;
  margin-bottom: 16px;
  background: var(--card);
  border: 1px solid var(--bordo);
  border-radius: 14px;
}

.icona {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  border-radius: 14px;
}

.corpo { min-width: 0; flex: 1; }
.corpo h2 { margin: 0; font-size: 1.25rem; }
.meta { margin: 2px 0 8px; font-size: 0.85rem; color: var(--tenue); overflow-wrap: anywhere; }
.descrizione { margin: 0 0 14px; }

.bottone {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 10px;
  background: var(--accento);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.bottone:hover { filter: brightness(1.1); }

details { margin-top: 12px; font-size: 0.9rem; }
summary { cursor: pointer; color: var(--tenue); }
details ul { margin: 8px 0 0; padding-left: 20px; }
details a { color: var(--accento); }
.peso { color: var(--tenue); }

.aiuto {
  margin-top: 32px;
  color: var(--tenue);
  font-size: 0.9rem;
}
.aiuto h2 { font-size: 1rem; color: var(--testo); }
.nota code { font-size: 0.85em; }

@media (max-width: 480px) {
  .app { flex-direction: column; }
}