/* =====================================================================
   geriatrieweb.fr — Design System
   Inspiré du Système de Design de l'État (DSFR) — RGAA 4.1 niveau AA
   Auteur : Dr Jean-Louis Piechnik — Avril 2026
   ===================================================================== */

/* ---------- 1. Variables ---------- */
:root {
  /* Palette */
  --color-primary: #000091;          /* Bleu France DSFR */
  --color-primary-hover: #1212ff;
  --color-primary-soft: #ececfe;
  --color-secondary: #b34000;        /* Brun chaud DSFR */
  --color-secondary-soft: #fee9e6;

  --color-text: #161616;
  --color-text-muted: #666666;
  --color-text-inverse: #ffffff;

  --color-bg: #ffffff;
  --color-bg-alt: #f6f6f6;
  --color-bg-soft: #f5f5fe;
  --color-border: #dddddd;
  --color-border-soft: #eeeeee;

  /* Tags */
  --tag-gov-bg: #ececfe;        --tag-gov-text: #000091;
  --tag-asso-bg: #b8fec9;       --tag-asso-text: #18753c;
  --tag-pro-bg: #e9d4ff;        --tag-pro-text: #6e445a;
  --tag-free-bg: #c3fad5;       --tag-free-text: #006a6f;
  --tag-paid-bg: #fee7fc;       --tag-paid-text: #6e445a;

  /* Typographie */
  --font-sans: "Marianne", -apple-system, BlinkMacSystemFont, "Segoe UI",
               Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;

  --fs-xs: 0.875rem;     /* 14px */
  --fs-sm: 1rem;         /* 16px */
  --fs-md: 1.125rem;     /* 18px */
  --fs-lg: 1.375rem;     /* 22px */
  --fs-xl: 1.75rem;      /* 28px */
  --fs-2xl: 2.25rem;     /* 36px */
  --fs-3xl: 2.75rem;     /* 44px */

  --lh-tight: 1.2;
  --lh-base: 1.55;
  --lh-loose: 1.7;

  /* Espacements (8px grid) */
  --sp-1: 0.25rem;   /*  4px */
  --sp-2: 0.5rem;    /*  8px */
  --sp-3: 0.75rem;   /* 12px */
  --sp-4: 1rem;      /* 16px */
  --sp-5: 1.5rem;    /* 24px */
  --sp-6: 2rem;      /* 32px */
  --sp-7: 3rem;      /* 48px */
  --sp-8: 4rem;      /* 64px */
  --sp-9: 6rem;      /* 96px */

  /* Rayons et ombres */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;

  /* Conteneur */
  --container-max: 1200px;
  --container-padding: clamp(1rem, 4vw, 2rem);
}

/* ---------- 2. Reset léger ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: var(--lh-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; transition: color var(--transition-fast); }
a:hover, a:focus { color: var(--color-primary-hover); }
:focus-visible { outline: 3px solid var(--color-primary); outline-offset: 3px; border-radius: 2px; box-shadow: 0 0 0 6px rgba(0, 0, 145, 0.15); }
/* Accessibilité — focus renforcé sur les cartes et liens de cartes */
.site-card:focus-within { outline: 2px solid var(--color-primary); outline-offset: 4px; }
/* Accessibilité — état de survol clavier accessible */
@media (hover: hover) {
  .site-card-cta:hover { text-decoration: underline; }
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-sans);
  line-height: var(--lh-tight);
  font-weight: 700;
  margin: 0 0 var(--sp-3) 0;
  color: var(--color-text);
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }
p { margin: 0 0 var(--sp-4) 0; }

/* ---------- 3. Utilitaires ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; top: -40px; left: var(--sp-4);
  background: var(--color-primary); color: var(--color-text-inverse);
  padding: var(--sp-2) var(--sp-4); border-radius: var(--radius-sm);
  text-decoration: none; z-index: 100;
  transition: top var(--transition-base);
}
.skip-link:focus { top: var(--sp-2); color: var(--color-text-inverse); }

/* ---------- 4. Header ---------- */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-5); padding-top: var(--sp-3); padding-bottom: var(--sp-3);
}
.brand { display: flex; align-items: center; gap: var(--sp-3); text-decoration: none; color: var(--color-text); }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: var(--color-primary); color: var(--color-text-inverse);
  font-weight: 800; font-size: 1.4rem; border-radius: var(--radius-md);
}
.brand-text strong { display: block; font-size: var(--fs-md); font-weight: 700; line-height: 1.1; }
.brand-text small { font-size: 0.78rem; color: var(--color-text-muted); display: block; }

.primary-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: var(--sp-1); flex-wrap: wrap; }
.primary-nav a {
  display: inline-block; padding: var(--sp-2) var(--sp-3);
  text-decoration: none; color: var(--color-text);
  border-radius: var(--radius-sm); font-weight: 500; font-size: var(--fs-xs);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.primary-nav a:hover, .primary-nav a:focus { background: var(--color-primary-soft); color: var(--color-primary); }
.primary-nav a[aria-current="page"] { background: var(--color-primary-soft); color: var(--color-primary); font-weight: 600; }

@media (max-width: 860px) {
  .site-header .container { flex-direction: column; align-items: flex-start; }
  .primary-nav { width: 100%; overflow-x: auto; }
  .primary-nav ul { flex-wrap: nowrap; }
}

/* ---------- 5. Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--color-primary-soft) 0%, var(--color-bg-soft) 100%);
  padding: var(--sp-8) 0 var(--sp-7);
  border-bottom: 1px solid var(--color-border-soft);
}
.hero h1 {
  font-size: clamp(1.85rem, 4vw + 0.5rem, var(--fs-3xl));
  max-width: 22ch; color: var(--color-primary);
}
.hero-lead { font-size: var(--fs-md); max-width: 60ch; color: var(--color-text); }
.hero-cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; margin: var(--sp-5) 0; }

.btn {
  display: inline-block;
  padding: var(--sp-3) var(--sp-5);
  border-radius: var(--radius-sm);
  font-weight: 600; font-size: var(--fs-sm);
  text-decoration: none;
  cursor: pointer; border: 2px solid transparent;
  transition: all var(--transition-fast);
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn-primary:hover, .btn-primary:focus { background: var(--color-primary-hover); color: var(--color-text-inverse); }
.btn-secondary { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-secondary:hover, .btn-secondary:focus { background: var(--color-primary-soft); color: var(--color-primary); }

.hero-search {
  display: flex; gap: var(--sp-2); max-width: 600px; margin-top: var(--sp-5);
  background: var(--color-bg); padding: var(--sp-2);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
}
.hero-search input[type="search"] {
  flex: 1; border: 0; padding: var(--sp-3); font-size: var(--fs-sm);
  background: transparent; color: var(--color-text); font-family: inherit;
}
.hero-search input[type="search"]:focus { outline: none; }
.hero-search button {
  background: var(--color-primary); color: var(--color-text-inverse);
  border: 0; padding: var(--sp-3) var(--sp-5); border-radius: var(--radius-sm);
  font-weight: 600; cursor: pointer; font-family: inherit;
}
.hero-search button:hover, .hero-search button:focus { background: var(--color-primary-hover); }

/* ---------- 6. Sections ---------- */
section { padding: var(--sp-8) 0; }
section h2 { font-size: clamp(1.6rem, 2.5vw + 0.5rem, var(--fs-2xl)); }
.section-lead { font-size: var(--fs-md); color: var(--color-text-muted); max-width: 65ch; margin-bottom: var(--sp-6); }

/* ---------- 7. Piliers (grille de cartes) ---------- */
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--sp-4);
}
.pillar-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  display: flex; flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.pillar-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-primary); }
.pillar-icon {
  font-size: 2.5rem; margin-bottom: var(--sp-3);
  width: 64px; height: 64px; display: flex; align-items: center; justify-content: center;
  background: var(--color-primary-soft); border-radius: var(--radius-md);
}
.pillar-card h3 { color: var(--color-primary); margin-bottom: var(--sp-2); }
.pillar-card p { color: var(--color-text-muted); flex: 1; font-size: var(--fs-xs); }
.card-link {
  display: inline-block; margin-top: var(--sp-3);
  font-weight: 600; text-decoration: none; color: var(--color-primary);
}
.card-link:hover, .card-link:focus { text-decoration: underline; }

/* Variantes de couleur par pilier */
.pillar-domicile .pillar-icon { background: #e3fdee; }
.pillar-juridique .pillar-icon { background: #fee9e6; }
.pillar-etablissements .pillar-icon { background: #ececfe; }
.pillar-palliatifs .pillar-icon { background: #e8f6fe; }
.pillar-oncogeriatrie .pillar-icon { background: #fee7fc; }

/* ---------- 8. Cards de sites recensés ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--sp-5);
}
.site-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.site-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.site-card-img {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-primary-soft), var(--color-bg-soft));
  border-bottom: 1px solid var(--color-border-soft);
  overflow: hidden;
  position: relative;
}
.site-card-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
  position: relative;
  z-index: 1;
}
.site-card:hover .site-card-img img { transform: scale(1.04); }
.site-card-img.gov { background: linear-gradient(135deg, #ececfe, #c1c1fb); }
.site-card-img.asso { background: linear-gradient(135deg, #b8fec9, #5fe885); }
.site-card-img.pro { background: linear-gradient(135deg, #e9d4ff, #c8a4f5); }
.site-card-img.commercial { background: linear-gradient(135deg, #fee9e6, #fcb8a8); }
/* Source attribution bandeau */
.site-card-img-source {
  position: absolute; bottom: 0; right: 0;
  background: rgba(0,0,0,0.6); color: #fff;
  font-size: 0.65rem; padding: 2px 6px;
  border-top-left-radius: var(--radius-sm);
  z-index: 2; opacity: 0; transition: opacity var(--transition-fast);
}
.site-card:hover .site-card-img-source { opacity: 1; }
.site-card-body { padding: var(--sp-5); display: flex; flex-direction: column; flex: 1; }
.site-card-title { font-size: var(--fs-md); margin-bottom: var(--sp-2); color: var(--color-text); }
.site-card-desc { font-size: var(--fs-xs); color: var(--color-text-muted); flex: 1; line-height: var(--lh-base); }
.site-card-meta { display: flex; flex-wrap: wrap; gap: var(--sp-2); margin: var(--sp-3) 0; }
.tag {
  display: inline-block; font-size: 0.72rem; font-weight: 600;
  padding: 2px var(--sp-2); border-radius: var(--radius-sm);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.tag-gov { background: var(--tag-gov-bg); color: var(--tag-gov-text); }
.tag-asso { background: var(--tag-asso-bg); color: var(--tag-asso-text); }
.tag-pro { background: var(--tag-pro-bg); color: var(--tag-pro-text); }
.tag-free { background: var(--tag-free-bg); color: var(--tag-free-text); }
.tag-paid { background: var(--tag-paid-bg); color: var(--tag-paid-text); }
.site-card-cta {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  margin-top: var(--sp-3);
  font-weight: 600; text-decoration: none; color: var(--color-primary);
}
.site-card-cta::after { content: "→"; transition: transform var(--transition-fast); }
.site-card-cta:hover::after { transform: translateX(3px); }

/* ---------- 9. Sous-rubriques (page rubrique) ---------- */
.breadcrumb {
  font-size: var(--fs-xs); color: var(--color-text-muted);
  padding: var(--sp-4) 0; border-bottom: 1px solid var(--color-border-soft);
  background: var(--color-bg-alt);
}
.breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; color: var(--color-primary); }
.breadcrumb [aria-current="page"] { color: var(--color-text); font-weight: 500; }

.page-intro {
  padding: var(--sp-7) 0 var(--sp-6);
  background: linear-gradient(180deg, var(--color-primary-soft) 0%, transparent 100%);
}
.page-intro h1 { color: var(--color-primary); margin-bottom: var(--sp-3); }
.page-intro p { font-size: var(--fs-md); max-width: 75ch; }
.page-intro .eyebrow {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: var(--sp-2);
  display: inline-block;
}
.page-intro .lead {
  font-size: var(--fs-lg);
  color: var(--color-text);
  font-weight: 500;
  max-width: 75ch;
  line-height: 1.45;
}
.page-intro .meta-info {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  font-style: italic;
  border-top: 1px solid rgba(0,0,145,0.15);
  padding-top: var(--sp-3);
  margin-top: var(--sp-4);
  max-width: 75ch;
}
.intro-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: var(--sp-3);
  margin: var(--sp-6) 0 var(--sp-5);
}
.stat-card {
  background: rgba(255,255,255,0.85);
  padding: var(--sp-4);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.stat-number {
  font-size: var(--fs-2xl);
  font-weight: 800;
  color: var(--color-primary);
  display: block;
  line-height: 1;
  margin-bottom: var(--sp-1);
}
.stat-label {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  display: block;
  line-height: 1.3;
}

.toc {
  background: var(--color-bg-alt); border-radius: var(--radius-md);
  padding: var(--sp-4); margin: var(--sp-6) 0;
  border-left: 4px solid var(--color-primary);
}
.toc h2 { font-size: var(--fs-md); margin-bottom: var(--sp-3); }
.toc ul { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.toc li { margin: 0; }
.toc a {
  display: inline-block; padding: var(--sp-1) var(--sp-3);
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: 999px; font-size: var(--fs-xs); text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-fast);
}
.toc a:hover, .toc a:focus { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }

.subsection { padding: var(--sp-7) 0; }
.subsection:nth-child(even) { background: var(--color-bg-alt); }
.subsection h2 { display: flex; align-items: center; gap: var(--sp-3); }
.subsection h2 .emoji { font-size: 1.8rem; }

/* Sous-groupes thématiques dans une section */
.sub-group {
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px dashed var(--color-border);
}
.subsection > .container > .sub-group:first-of-type {
  margin-top: var(--sp-5);
  padding-top: 0;
  border-top: none;
}
.sub-group h3 {
  font-size: var(--fs-lg);
  color: var(--color-primary);
  margin-bottom: var(--sp-2);
  display: flex; align-items: center; gap: var(--sp-2);
}
.sub-group h3 .icon { font-size: 1.3rem; }
.sub-group p.sub-lead {
  color: var(--color-text-muted);
  font-size: var(--fs-xs);
  margin-bottom: var(--sp-4);
  max-width: 70ch;
}

/* ---------- 10. About strip ---------- */
.about-strip {
  background: var(--color-text);
  color: var(--color-text-inverse);
  padding: var(--sp-7) 0;
}
.about-strip h2 { color: var(--color-text-inverse); }
.about-strip p { color: rgba(255,255,255,0.9); max-width: 70ch; }
.about-strip a, .about-strip strong { color: var(--color-text-inverse); }
.link-arrow {
  display: inline-block; margin-top: var(--sp-3); font-weight: 600;
  text-decoration: underline; color: var(--color-text-inverse);
}

/* ---------- 11. Footer ---------- */
.site-footer {
  background: #1a1a1a;
  color: #e0e0e0;
  padding: var(--sp-7) 0 var(--sp-5);
  font-size: var(--fs-xs);
}
.site-footer a { color: #ffffff; }
.footer-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--sp-6);
  margin-bottom: var(--sp-6);
}
.site-footer h4 {
  font-size: var(--fs-sm); color: #ffffff;
  margin-bottom: var(--sp-3); text-transform: uppercase; letter-spacing: 0.05em;
}
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: var(--sp-2); }
.site-footer li a { text-decoration: none; }
.site-footer li a:hover { text-decoration: underline; }
.footer-bottom {
  padding-top: var(--sp-5); border-top: 1px solid #333;
  color: #999; font-size: 0.78rem;
}

/* ---------- 12. Print ---------- */
@media print {
  .site-header, .site-footer, .hero-cta, .hero-search { display: none; }
  body { color: #000; background: #fff; }
  a { color: #000; text-decoration: underline; }
  .site-card, .pillar-card { break-inside: avoid; }
}

/* ---------- 13. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}