/* Foluna — feuille de style unique. Couleurs reprises de l'icône (nuit, lune, livre). */
/* Titres en Nunito, police arrondie (licence SIL OFL 1.1, assets/fonts/OFL.txt), servie par le site : aucun appel à un tiers. */
@font-face {
  font-family: "Nunito";
  src: url("/assets/fonts/nunito-latin-wght-normal.woff2") format("woff2");
  font-weight: 200 1000;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #fbfbfd;
  --bg-soft: #f1f2f8;
  --text: #1d1d1f;
  --text-soft: #5b5d6b;
  --line: #e2e3ec;
  --accent: #262f7a;      /* bleu nuit de l'icône */
  --accent-text: #ffffff;
  --moon: #f2cc6b;        /* lune */
  --font-title: "Nunito", ui-rounded, -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --wide: 1040px;
  --narrow: 680px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1130;
    --bg-soft: #161a42;
    --text: #ececf3;
    --text-soft: #a6a9c2;
    --line: #262b5c;
    --accent: #b7c2ff;
    --accent-text: #0e1130;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* En-tête */
.site-header {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; color: var(--text); font-size: 19px; }
.brand:hover { text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.site-header nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; font-size: 15px; }
.site-header nav a { color: var(--text-soft); }
.site-header nav a[aria-current="page"] { color: var(--text); }
.lang { font-size: 15px; padding: 2px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--text-soft); }

/* Accueil */
.hero { text-align: center; padding: 56px 24px 32px; max-width: 1200px; margin: 0 auto; }
.hero img.icon { width: 128px; height: 128px; margin: 0 auto 20px; }
/* Titre sur une ligne à partir de la tablette : sa taille suit la largeur de la fenêtre. */
.hero h1 { font-size: clamp(28px, 4.6vw, 52px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.025em; }
@media (min-width: 768px) { .hero h1 { white-space: nowrap; } }
.hero p.lead { font-size: 21px; color: var(--text-soft); margin: 0 auto 28px; max-width: var(--narrow); }
.hero p.lead .line { display: block; }
.button {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
}
.button:hover { text-decoration: none; opacity: .9; }
.hero .meta { font-size: 14px; color: var(--text-soft); margin-top: 14px; }

.shot { max-width: var(--wide); margin: 24px auto 64px; padding: 0 24px; }
.shot img { border-radius: var(--radius); box-shadow: 0 20px 60px rgba(14, 17, 48, .18); }
.shot .dark { display: none; }
@media (prefers-color-scheme: dark) {
  .shot .light { display: none; }
  .shot .dark { display: block; }
}

.features {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px 40px;
}
.features h3 { font-size: 18px; margin: 0 0 6px; }
.features h3::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--moon); margin-right: 10px; vertical-align: middle; }
.features p { margin: 0; color: var(--text-soft); font-size: 16px; }

.band { background: var(--bg-soft); padding: 48px 24px; text-align: center; }
.band h2 { margin: 0 0 8px; font-size: 28px; }
.band p { margin: 0 auto 24px; color: var(--text-soft); max-width: var(--narrow); }

/* Pages de texte */
main.text { max-width: var(--narrow); margin: 0 auto; padding: 32px 24px 64px; }
main.text h1 { font-size: 36px; line-height: 1.2; margin: 0 0 24px; letter-spacing: -0.01em; }
main.text h2 { font-size: 22px; margin: 40px 0 8px; }
main.text h3 { font-size: 18px; margin: 28px 0 4px; }
main.text p, main.text li { color: var(--text); }
main.text .muted { color: var(--text-soft); }
.todo { background: #fff3c4; color: #5a4500; padding: 0 4px; border-radius: 4px; }
pre.licence { white-space: pre-wrap; font: 14px/1.5 ui-monospace, Menlo, monospace; background: var(--bg-soft); padding: 16px; border-radius: var(--radius); }

details { border-bottom: 1px solid var(--line); padding: 14px 0; }
details summary { cursor: pointer; font-weight: 600; list-style: none; }
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; float: right; color: var(--text-soft); font-weight: 400; }
details[open] summary::after { content: "–"; }
details p, details ol, details ul { margin: 10px 0 0; }

.release { border-top: 1px solid var(--line); padding-top: 8px; }
.release h2 { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.release time { font-size: 15px; font-weight: 400; color: var(--text-soft); }

/* Pied de page */
.site-footer {
  border-top: 1px solid var(--line);
  max-width: var(--wide);
  margin: 0 auto;
  padding: 24px;
  font-size: 14px;
  color: var(--text-soft);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.site-footer a { color: var(--text-soft); }
.site-footer .spacer { margin-left: auto; }

@media (max-width: 600px) {
  .hero p.lead { font-size: 19px; }
  .site-header nav { margin-left: 0; width: 100%; }
}

/* Galerie de captures */
.gallery { padding-top: 16px; }
.gallery figcaption { text-align: center; max-width: var(--narrow); margin: 0 auto 24px; }
.gallery figcaption h2 { font-size: 28px; margin: 0 0 6px; letter-spacing: -0.01em; }
.gallery figcaption p { margin: 0; color: var(--text-soft); }

/* Fenêtre de lecture : bascule entre les trois fonds de page, sans JavaScript */
.tabs .switch { display: flex; flex-wrap: wrap; justify-content: center; align-items: flex-start; gap: 8px; }
.tabs .switch input { position: absolute; opacity: 0; pointer-events: none; }
.tabs .switch label {
  cursor: pointer;
  padding: 6px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 15px;
}
.tabs .switch input:checked + label { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.tabs .switch input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }
.tabs .pages { flex: 0 0 100%; margin-top: 16px; }
.tabs .pages img { max-width: 560px; width: 100%; margin: 0 auto; }
.tabs .pages img { display: none; }
#fond-clair:checked ~ .pages .fond-clair,
#fond-sepia:checked ~ .pages .fond-sepia,
#fond-sombre:checked ~ .pages .fond-sombre { display: block; }

/* Réglages : un onglet choisi, en clair ou en sombre selon le site */
.settings .pages img { max-width: 520px; }
#reglage-general:checked ~ .pages .reglage-general.light,
#reglage-library:checked ~ .pages .reglage-library.light,
#reglage-backup:checked ~ .pages .reglage-backup.light,
#reglage-kindle:checked ~ .pages .reglage-kindle.light { display: block; }
@media (prefers-color-scheme: dark) {
  #reglage-general:checked ~ .pages .reglage-general.light,
  #reglage-library:checked ~ .pages .reglage-library.light,
  #reglage-backup:checked ~ .pages .reglage-backup.light,
  #reglage-kindle:checked ~ .pages .reglage-kindle.light { display: none; }
  #reglage-general:checked ~ .pages .reglage-general.dark,
  #reglage-library:checked ~ .pages .reglage-library.dark,
  #reglage-backup:checked ~ .pages .reglage-backup.dark,
  #reglage-kindle:checked ~ .pages .reglage-kindle.dark { display: block; }
}

/* Typographie douce des titres */
h1, h2, h3, .brand { font-family: var(--font-title); }
h1, h2 { font-weight: 800; }
h3, .brand { font-weight: 700; }
.hero h1, main.text h1, .gallery figcaption h2 { letter-spacing: -0.01em; }