/* =====================================================================
   Recommandations Secours à Personne 2024 — Feuille de style
   Design éditorial clair, sobre et élégant · thème sombre en option
   ===================================================================== */

:root {
  --bg: #f7f6f3;
  --surface: #ffffff;
  --surface-2: #f2f0ec;
  --border: #e6e2db;
  --border-strong: #d8d3ca;
  --ink: #1f2733;
  --ink-soft: #4d5665;
  --ink-mute: #8a919e;
  --accent: #c62f39;
  --accent-dark: #a3242d;
  --accent-soft: #faeceb;
  --accent-border: #f0cfcd;
  --shadow-sm: 0 1px 2px rgba(31, 39, 51, 0.05);
  --shadow-md: 0 8px 28px -12px rgba(31, 39, 51, 0.16);
  --shadow-lg: 0 18px 44px -18px rgba(31, 39, 51, 0.22);
  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 1200px;
  --header-h: 172px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
  --bg: #171b22;
  --surface: #1f242e;
  --surface-2: #262c38;
  --border: #2e3542;
  --border-strong: #3a4252;
  --ink: #e9ebf0;
  --ink-soft: #b3bac6;
  --ink-mute: #79818f;
  --accent: #e05560;
  --accent-dark: #c62f39;
  --accent-soft: rgba(224, 85, 96, 0.12);
  --accent-border: rgba(224, 85, 96, 0.3);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 28px -12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 44px -18px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* =========================== HEADER =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 14px 24px 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.header-top {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }
.brand .logo {
  width: 44px; height: 44px;
  flex: 0 0 auto;
  border-radius: 12px;
  display: grid; place-items: center;
  font-size: 20px;
  color: #fff;
  background: var(--accent);
  box-shadow: var(--shadow-sm);
}
.brand-txt { min-width: 0; }
.brand-txt h1 {
  font-family: var(--serif);
  font-size: 1.13rem;
  font-weight: 700;
  letter-spacing: 0.1px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.brand-txt p {
  font-size: 0.75rem;
  color: var(--ink-mute);
  letter-spacing: 0.4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.header-actions { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 1rem;
  cursor: pointer;
  display: grid; place-items: center;
  transition: border-color .2s, background .2s, transform .15s;
}
.icon-btn:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-1px); }
.icon-btn:active { transform: translateY(0); }

/* Barre de recherche */
.search-wrap { position: relative; }
.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1.5px solid var(--border-strong);
  border-radius: 12px;
  padding: 11px 16px;
  box-shadow: var(--shadow-sm);
  transition: border-color .25s, box-shadow .25s;
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.search-box .s-icon { font-size: 1rem; color: var(--ink-mute); }
.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--ink);
  font-size: 0.98rem;
  outline: none;
  min-width: 0;
}
.search-box input::placeholder { color: var(--ink-mute); }
.search-clear {
  border: none; background: var(--surface-2); color: var(--ink-soft);
  border-radius: 8px; width: 26px; height: 26px; cursor: pointer;
  display: none; place-items: center; font-size: 0.85rem;
}
.search-clear.show { display: grid; }

.search-tools {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 9px;
}
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-chip {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.2px;
  padding: 6px 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}
.filter-chip:hover { border-color: var(--accent); color: var(--accent); }
.filter-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.search-count {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  min-height: 1.1em;
}

/* =========================== LAYOUT =========================== */
.layout {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 30px 24px 80px;
  display: grid;
  grid-template-columns: 264px 1fr;
  gap: 32px;
  align-items: start;
}

/* Sidebar */
.sidebar {
  position: sticky;
  top: calc(var(--header-h) + 16px);
  align-self: start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 12px;
  max-height: calc(100vh - var(--header-h) - 36px);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}
.sidebar h2 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  color: var(--ink-mute);
  padding: 4px 12px 12px;
  font-weight: 600;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 12px;
  border-radius: 9px;
  cursor: pointer;
  color: var(--ink-soft);
  font-size: 0.88rem;
  transition: background .18s, color .18s;
}
.nav-item:hover { background: var(--surface-2); color: var(--ink); }
.nav-item.active { background: var(--accent-soft); color: var(--accent-dark); }
:root[data-theme="dark"] .nav-item.active { color: var(--accent); }
.nav-item .n-ico {
  flex: 0 0 auto;
  width: 30px; height: 30px;
  border-radius: 9px;
  display: grid; place-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  font-family: var(--serif);
  background: var(--surface-2);
  color: var(--ink-soft);
  border: 1px solid var(--border);
}
.nav-item.active .n-ico {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.nav-item .n-txt { min-width: 0; }
.nav-item .n-num { font-size: 0.66rem; color: var(--ink-mute); display: block; letter-spacing: 0.3px; }
.nav-item .n-title { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 500; }

/* =========================== HERO =========================== */
.hero {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 42px;
  margin-bottom: 34px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.hero::after {
  content: "";
  position: absolute;
  left: 42px; bottom: 0;
  width: 64px; height: 4px;
  border-radius: 4px 4px 0 0;
  background: var(--accent);
}
.hero .badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 18px;
}
:root[data-theme="dark"] .hero .badge { color: var(--accent); }
.hero h2 {
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3.6vw, 2.45rem);
  line-height: 1.2;
  letter-spacing: -0.2px;
  margin-bottom: 14px;
  max-width: 700px;
  font-weight: 700;
}
.hero h2 .grad { color: var(--accent); }
.hero p { color: var(--ink-soft); max-width: 620px; font-size: 1rem; }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
}
.hero-stats .stat b {
  font-family: var(--serif);
  font-size: 1.75rem;
  display: block;
  line-height: 1.1;
  color: var(--ink);
}
.hero-stats .stat span { font-size: 0.78rem; color: var(--ink-mute); }

/* =========================== CHAPITRES =========================== */
.part {
  margin-bottom: 40px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.part-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border);
}
.part-head .p-ico {
  width: 52px; height: 52px;
  flex: 0 0 auto;
  border-radius: 14px;
  display: grid; place-items: center;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  background: var(--part-color, var(--accent));
  box-shadow: var(--shadow-sm);
}
.part-head h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  letter-spacing: -0.1px;
  font-weight: 700;
}
.part-head .p-num {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.part-head .p-resume { font-size: 0.82rem; color: var(--ink-mute); margin-top: 1px; }

/* Fiches (cards / accordéons) */
.chapters { display: grid; gap: 12px; }
.chapter {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color .22s, box-shadow .25s;
}
.chapter:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.chapter.open { border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.chapter-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
}
.chapter-head .c-info { flex: 1; min-width: 0; }
.chapter-head h4 {
  font-size: 1.01rem;
  font-weight: 600;
  letter-spacing: -0.1px;
}
.chapter-head .c-resume {
  font-size: 0.78rem;
  color: var(--ink-mute);
  margin-top: 2px;
}
.chapter-head .chev {
  flex: 0 0 auto;
  transition: transform .3s ease;
  color: var(--ink-mute);
  font-size: 0.95rem;
}
.chapter.open .chev { transform: rotate(180deg); color: var(--accent); }

/* Badge de type de fiche (AC / PR / FT) */
.type-badge {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  border-radius: 11px;
  display: grid; place-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.6px;
}
.tb-ac { background: #e7f2ee; color: #23785f; }
.tb-pr { background: var(--accent-soft); color: var(--accent-dark); }
.tb-ft { background: #e9eff8; color: #33598f; }
:root[data-theme="dark"] .tb-ac { background: rgba(56, 148, 118, 0.16); color: #6fc4a8; }
:root[data-theme="dark"] .tb-pr { background: var(--accent-soft); color: var(--accent); }
:root[data-theme="dark"] .tb-ft { background: rgba(90, 140, 210, 0.16); color: #8fb4e6; }

/* Badge de niveau PSE */
.c-tag {
  flex: 0 0 auto;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--ink-soft);
  border: 1px solid var(--border-strong);
}
.c-tag.tag-pse1 { background: var(--accent-soft); color: var(--accent-dark); border-color: var(--accent-border); }
:root[data-theme="dark"] .c-tag.tag-pse1 { color: var(--accent); }
.c-tag.tag-pse2 { background: #e9eff8; color: #33598f; border-color: #d3e0f0; }
:root[data-theme="dark"] .c-tag.tag-pse2 { background: rgba(90, 140, 210, 0.16); color: #8fb4e6; border-color: rgba(90, 140, 210, 0.3); }
.c-tag.tag-pse1-2 { background: #f2ecf7; color: #6a4796; border-color: #e0d4ec; }
:root[data-theme="dark"] .c-tag.tag-pse1-2 { background: rgba(140, 110, 200, 0.16); color: #b49ade; border-color: rgba(140, 110, 200, 0.3); }

/* Corps de fiche */
.chapter-body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .35s ease;
}
.chapter-body > .cb-inner { overflow: hidden; }
.chapter.open .chapter-body { grid-template-rows: 1fr; }
.cb-content {
  padding: 6px 22px 24px;
  border-top: 1px solid var(--border);
  margin: 0 0;
}

/* Blocs de contenu des fiches */
.b-h {
  font-family: var(--serif);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
  margin: 20px 0 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
}
.cb-content > .b-h:first-child { margin-top: 16px; }

.b-p { color: var(--ink-soft); font-size: 0.93rem; margin: 8px 0; }

.b-ul { margin: 8px 0; }
.b-ul ul { list-style: none; display: grid; gap: 6px; }
.b-ul > ul > li {
  position: relative;
  padding-left: 22px;
  color: var(--ink-soft);
  font-size: 0.93rem;
}
.b-ul > ul > li::before {
  content: "";
  position: absolute; left: 4px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}
.b-ul ul ul { margin-top: 6px; }
.b-ul ul ul li {
  position: relative;
  padding-left: 20px;
  color: var(--ink-soft);
  font-size: 0.91rem;
}
.b-ul ul ul li::before {
  content: "";
  position: absolute; left: 4px; top: 10px;
  width: 5px; height: 5px; border-radius: 50%;
  border: 1.5px solid var(--ink-mute);
  background: transparent;
}
.b-ul ul ul ul li::before {
  border: none;
  width: 7px; height: 2px; border-radius: 1px;
  background: var(--ink-mute);
  top: 12px;
}

.b-notes {
  margin-top: 20px;
  background: var(--surface-2);
  border-left: 3px solid var(--border-strong);
  border-radius: 8px;
  padding: 12px 16px;
}
.b-notes .bn-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.b-notes p { color: var(--ink-mute); font-size: 0.82rem; margin: 4px 0; }

mark {
  background: #fdedb2;
  color: #4d3f10;
  border-radius: 3px;
  padding: 0 2px;
}
:root[data-theme="dark"] mark { background: #8a6d1f; color: #fdf4d8; }

/* Aucun résultat */
.no-results {
  text-align: center;
  padding: 70px 20px;
  color: var(--ink-soft);
  display: none;
}
.no-results.show { display: block; animation: fadeUp .4s ease; }
.no-results .nr-ico { font-size: 2.4rem; margin-bottom: 12px; opacity: 0.5; }
.no-results h3 { font-family: var(--serif); margin-bottom: 6px; }

/* état masqué recherche */
.part.hidden, .chapter.hidden { display: none; }

/* Animations d'apparition */
.reveal { opacity: 0; transform: translateY(16px); }
.reveal.in { animation: fadeUp .55s cubic-bezier(.2,.7,.3,1) forwards; }
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

/* Bouton retour haut */
.to-top {
  position: fixed;
  right: 24px; bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 13px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  display: grid; place-items: center;
  opacity: 0; transform: translateY(16px);
  pointer-events: none;
  transition: opacity .3s, transform .3s, background .2s;
  box-shadow: var(--shadow-md);
  z-index: 40;
}
.to-top.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.to-top:hover { background: var(--accent-dark); transform: translateY(-2px); }

/* Mobile nav toggle */
.nav-toggle { display: none; }
.sidebar-backdrop { display: none; }

/* Footer / avertissement */
.footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px 60px;
}
.disclaimer {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  color: var(--ink-soft);
  font-size: 0.85rem;
  box-shadow: var(--shadow-sm);
}
.disclaimer b { color: var(--ink); }
.foot-meta {
  text-align: center;
  color: var(--ink-mute);
  font-size: 0.76rem;
  margin-top: 24px;
  letter-spacing: 0.3px;
}

/* =========================== RESPONSIVE =========================== */
@media (max-width: 940px) {
  :root { --header-h: 168px; }
  .layout { grid-template-columns: 1fr; }
  .nav-toggle { display: grid; place-items: center; }
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 284px;
    max-height: 100vh;
    border-radius: 0;
    z-index: 60;
    transform: translateX(-105%);
    transition: transform .3s cubic-bezier(.4,0,.2,1);
    padding-top: 22px;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop {
    display: block;
    position: fixed; inset: 0;
    background: rgba(31, 39, 51, 0.4);
    backdrop-filter: blur(2px);
    z-index: 55;
    opacity: 0; pointer-events: none;
    transition: opacity .3s;
  }
  .sidebar-backdrop.show { opacity: 1; pointer-events: auto; }
}

@media (max-width: 620px) {
  .filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    max-width: 100%;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }
  .filters::-webkit-scrollbar { display: none; }
  .filter-chip { white-space: nowrap; }
  .layout { padding: 20px 14px 60px; }
  .header-inner { padding: 12px 14px 10px; }
  .hero { padding: 28px 22px; }
  .hero::after { left: 22px; }
  .hero-stats { gap: 24px; }
  .part-head .p-ico { width: 44px; height: 44px; font-size: 1rem; }
  .part-head h3 { font-size: 1.15rem; }
  .chapter-head { padding: 14px 15px; gap: 12px; }
  .chapter-head .c-resume { display: none; }
  .type-badge { width: 36px; height: 36px; font-size: 0.68rem; }
  .cb-content { padding: 4px 16px 20px; }
  .brand-txt p { display: none; }
  .footer { padding: 0 14px 50px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}