/*
 * Il sito di Instink (D50, D61): carta su una scrivania, come l'app (D46).
 * Nessuno script, nessun font da server altrui, nessun tracciamento (D12).
 */

@font-face {
  font-family: "Instrument Sans";
  src: url("fonts/InstrumentSans.ttf") format("truetype");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --desk: #F3EFE7;
  --card: #FFFDF8;
  --ink: #1F2430;
  --muted: #6F685B;
  --outline: #E0D8C8;
  --accent: #1F2430;
  --on-accent: #FFFDF8;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --desk: #141311;
    --card: #1D1C19;
    --ink: #ECE5D6;
    --muted: #A39C8E;
    --outline: #33302A;
    --accent: #ECE5D6;
    --on-accent: #141311;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

a { color: inherit; text-underline-offset: 3px; }

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 19px;
  text-decoration: none;
}

.brand svg { width: 28px; height: 28px; }

.lang {
  font-size: 15px;
  color: var(--muted);
}

.hero {
  padding: 56px 0 40px;
}

.hero h1 {
  font-size: clamp(40px, 9vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}

.hero p {
  font-size: 20px;
  color: var(--muted);
  margin: 0;
  max-width: 34em;
}

.scribble {
  display: block;
  width: 120px;
  height: 120px;
  margin: 0 0 28px;
}

.scribble path {
  stroke-dasharray: 40;
  stroke-dashoffset: 40;
  animation: write 1.4s ease-out 0.2s forwards;
}

@keyframes write { to { stroke-dashoffset: 0; } }

/* La goccia dell'istinto (D66): arriva quando il tratto è finito. */
.scribble .spark {
  opacity: 0;
  transform-origin: 19.2px 9.4px;
  animation: spark 0.35s ease-out 1.55s forwards;
}

@keyframes spark {
  from { opacity: 0; transform: scale(0.2); }
  to { opacity: 1; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .scribble path { animation: none; stroke-dashoffset: 0; }
  .scribble .spark { animation: none; opacity: 1; }
}

.card {
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: 22px;
  padding: 24px;
  margin: 0 0 16px;
}

.card h2, .card h3 { margin-top: 0; }

.steps {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
  margin: 8px 0 40px;
}

@media (min-width: 640px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

.steps .card { margin: 0; }

.steps strong {
  display: block;
  font-size: 20px;
  margin-bottom: 4px;
}

.steps span { color: var(--muted); }

.pill {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  text-decoration: none;
  font-weight: 600;
}

article h1 {
  font-size: clamp(32px, 7vw, 44px);
  line-height: 1.1;
  margin: 32px 0 8px;
}

article .updated {
  color: var(--muted);
  margin: 0 0 28px;
}

article h2 {
  font-size: 22px;
  margin: 36px 0 8px;
}

article ul { padding-left: 1.2em; }

article li { margin: 6px 0; }

.promise {
  font-size: 19px;
}

details {
  background: var(--card);
  border: 1px solid var(--outline);
  border-radius: 18px;
  padding: 16px 20px;
  margin: 0 0 12px;
}

details summary {
  cursor: pointer;
  font-weight: 600;
}

details[open] summary { margin-bottom: 8px; }

footer {
  color: var(--muted);
  font-size: 15px;
  padding: 48px 0 40px;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-bottom: 8px;
}