/* ── Tokens ──────────────────────────────────────────────── */
:root {
  --bg:        #fbfbfa;
  --surface:   #ffffff;
  --text:      #17171a;
  --muted:     #6b6b73;
  --line:      #e6e6e2;
  --accent:    #17171a;
  --field:     #e9e9e6;
  --radius:    12px;
  --measure:   38rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:      #0d0d0f;
    --surface: #151518;
    --text:    #f2f2f0;
    --muted:   #9a9aa2;
    --line:    #26262b;
    --accent:  #f2f2f0;
  --field:   #202024;
  }
}

/* ── Base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--surface); padding: .75rem 1rem; border-radius: 8px;
}
.skip:focus { left: 1rem; top: 1rem; z-index: 10; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Top bar ─────────────────────────────────────────────── */
.topbar {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem 0;
}

.topbar nav {
  display: flex;
  justify-content: flex-end;
  gap: 1.5rem;
  font-size: .875rem;
}

.topbar a {
  color: var(--muted);
  text-decoration: none;
  transition: color .15s ease;
}
.topbar a:hover { color: var(--text); }

/* ── Layout ──────────────────────────────────────────────── */
main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 0;
}

main > section + section { margin-top: 5.5rem; }

/* ── Intro ───────────────────────────────────────────────── */
.avatar {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--line);
  margin-bottom: 2rem;
}

.intro h1 {
  font-size: 1.0625rem;
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: -.02em;
  margin: 0 0 1.25rem;
}

.intro p {
  margin: 0;
  color: var(--muted);
  font-size: .9375rem;
}

/* ── Newsletter ──────────────────────────────────────────── */
.newsletter {
  /* volontairement sans cadre ni fond : le bloc respire à plat */
}

.newsletter h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 .5rem;
  letter-spacing: -.01em;
}

.newsletter p {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: .875rem;
}


/* ── Sections & cards ────────────────────────────────────── */
.section-title {
  font-size: .75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.75rem;
}

.cards a {
  display: block;
  text-decoration: none;
}

.card-title {
  display: block;
  font-size: .9375rem;
  font-weight: 500;
  margin-bottom: .25rem;
}

.arrow {
  display: inline-block;
  color: var(--muted);
  transition: transform .18s ease;
}
.cards a:hover .arrow { transform: translateX(3px); }

.card-desc {
  display: block;
  font-size: .875rem;
  color: var(--muted);
}

/* ── Footer ──────────────────────────────────────────────── */
footer {
  max-width: var(--measure);
  margin: 6rem auto 0;
  padding: 2rem 1.5rem 3.5rem;
  border-top: 1px solid var(--line);
}

.social {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: .8125rem;
  margin-bottom: 1.25rem;
}

.social a {
  color: var(--muted);
  text-decoration: none;
  transition: color .15s ease;
}
.social a:hover { color: var(--text); }

.copy {
  margin: 0;
  font-size: .8125rem;
  color: var(--muted);
}

/* ── Larger screens ──────────────────────────────────────── */
@media (min-width: 40rem) {
  main { padding-top: 6rem; }
  .intro h1 { font-size: 1.25rem; }
  main > section + section { margin-top: 6.5rem; }
  .cards { grid-template-columns: 1fr 1fr; gap: 1.75rem 2rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}




/* ── Appel à l'action ────────────────────────────────────── */
.cta {
  display: inline-block;
  font-size: .9375rem;
  font-weight: 600;
  padding: .85rem 1.5rem;
  color: var(--bg);
  background: var(--accent);
  border-radius: 8px;
  text-decoration: none;
  transition: opacity .15s ease;
}
.cta:hover { opacity: .85; }
.cta .arrow { color: inherit; }
.cta:hover .arrow { transform: translateX(3px); }

/* ── Formulaire e-mail puis redirection ──────────────────── */
.signup {
  display: flex;
  gap: .625rem;
  flex-wrap: wrap;
}

.signup input[type="email"] {
  flex: 1 1 14rem;
  min-width: 0;
  font: inherit;
  font-size: .9375rem;
  padding: .7rem 1rem;
  color: var(--text);
  background: var(--field);
  border: 0;
  border-radius: 8px;
}
.signup input[type="email"]::placeholder { color: var(--muted); }

.signup button {
  font: inherit;
  font-size: .9375rem;
  font-weight: 600;
  padding: .7rem 1.5rem;
  color: var(--bg);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  transition: opacity .15s ease;
}
.signup button:hover { opacity: .85; }
.signup button:disabled { opacity: .55; cursor: default; }
.signup button .arrow { color: inherit; }

/* piège anti-robot : invisible pour l'humain, présent pour le robot */
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

.form-status {
  margin: .875rem 0 0;
  font-size: .8125rem;
  color: var(--muted);
  min-height: 1.2em;
}

/* ── Mobile : champ et bouton empilés, largeurs identiques ── */
/* Sur écran étroit le bouton ne faisait que la largeur de son texte,
   et passait à la ligne sous un champ plus large. Ici les deux
   occupent toute la largeur : mêmes bords gauche et droit. */
@media (max-width: 39.99rem) {
  .signup {
    flex-direction: column;
    align-items: stretch;
  }
  .signup input[type="email"],
  .signup button {
    flex: 0 0 auto;
    width: 100%;
  }
  .signup button {
    justify-content: center;
  }
}

/* Pas de contour au focus sur le champ e-mail : le curseur de saisie
   signale déjà la position. Le bouton et les liens gardent le leur,
   pour rester navigables au clavier. */
.signup input[type="email"]:focus,
.signup input[type="email"]:focus-visible {
  outline: none;
  box-shadow: none;
}