:root {
  --fond: #f6f3ef;
  --texte: #1f1f1f;
  --doux: #6b6b6b;
  --sauge: #8a9a86;
  --rose: #c99a9a;
  --carte: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root { --fond: #161616; --texte: #f1eeea; --doux: #a9a6a2; --carte: #222222; }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--fond);
  color: var(--texte);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}
main {
  width: 100%;
  max-width: 420px;
  padding: 48px 16px 32px;
  text-align: center;
}
.avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--carte);
  box-shadow: 0 6px 24px rgba(0, 0, 0, .12);
}
.avatar.petit { width: 96px; height: 96px; }
h1 { font-size: 28px; margin: 16px 0 4px; letter-spacing: .5px; }
.ia { color: var(--doux); font-size: 14px; margin: 0 0 16px; }
.bio { margin: 0 0 28px; }
nav { display: flex; flex-direction: column; gap: 12px; }
.bouton {
  display: block;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--carte);
  color: var(--texte);
  text-decoration: none;
  font-weight: 600;
  border: 1px solid rgba(0, 0, 0, .08);
}
.bouton.plein { background: var(--sauge); color: #fff; border-color: transparent; }
.bouton:focus-visible { outline: 3px solid var(--rose); outline-offset: 2px; }
.note { color: var(--doux); font-size: 12px; margin-top: 36px; }