/* ============================================================
   STHENOA TRANSITIONS — Design system unifié
   Conçu pour : accessibilité (RGAA / WCAG AA-AAA),
   lisibilité dyslexie/dyspraxie/basse vision, performance.
   ============================================================ */

/* --- Imports polices accessibles ---------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Atkinson+Hyperlegible:ital,wght@0,400;0,700;1,400&family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&display=swap');

/* --- Variables CSS ------------------------------------------ */
:root {
  /* Couleurs : alignées sur la charte du logo Sthenoa Transitions
     (vert #5AB43C + pétrole #003C5A) — contrastes ≥ AA WCAG sur cream */
  --c-bg: #F9F6F1;             /* Crème chaude (inchangée) */
  --c-bg-alt: #F1ECE3;          /* Crème plus marquée */
  --c-surface: #FFFFFF;
  --c-text: #18181B;            /* Quasi-noir 14,8:1 sur crème (AAA) */
  --c-text-soft: #44444A;       /* 9,5:1 sur crème (AAA) */
  --c-text-muted: #5A5A60;      /* 6,9:1 (AA renforcé) */
  --c-primary: #003C5A;         /* Pétrole logo — 12,5:1 sur crème (AAA) */
  --c-primary-hover: #001E3C;   /* Pétrole très sombre */
  --c-accent: #3C783C;          /* Vert sombre — 6,3:1 sur crème (AA texte normal) */
  --c-accent-hover: #2D5A2D;    /* Vert très sombre pour hover */
  --c-accent-bright: #5AB43C;   /* Vert vif logo — usage décoratif uniquement (pas de texte) */
  --c-border: #D9D2C5;
  --c-border-strong: #B8AE9C;
  --c-success: #2D6A4F;         /* Vert teal légèrement distinct de l'accent */
  --c-focus: #FFB400;           /* Jaune focus haute visibilité (universel) */

  /* Typographie */
  --f-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --f-body: 'Atkinson Hyperlegible', system-ui, -apple-system, sans-serif;

  /* Tailles fluides (clamp) */
  --fs-xs: clamp(0.875rem, 0.85rem + 0.1vw, 0.95rem);
  --fs-sm: clamp(0.95rem, 0.9rem + 0.2vw, 1rem);
  --fs-base: clamp(1.0625rem, 1rem + 0.3vw, 1.15rem);   /* ≥17px */
  --fs-md: clamp(1.15rem, 1.05rem + 0.5vw, 1.3rem);
  --fs-lg: clamp(1.35rem, 1.15rem + 1vw, 1.6rem);
  --fs-xl: clamp(1.6rem, 1.3rem + 1.5vw, 2.1rem);
  --fs-2xl: clamp(2rem, 1.6rem + 2vw, 2.75rem);
  --fs-3xl: clamp(2.4rem, 1.8rem + 3vw, 3.6rem);

  /* Espaces */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;

  /* Layout */
  --w-content: 70ch;           /* Longueur de ligne idéale lecture */
  --w-wide: 1180px;
  --radius: 6px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px rgba(24,24,27,0.04), 0 1px 3px rgba(24,24,27,0.08);
  --shadow-md: 0 4px 6px rgba(24,24,27,0.05), 0 10px 20px rgba(24,24,27,0.08);
  --transition: 180ms ease;
}

/* --- Reset & base ------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--f-body);
  font-size: var(--fs-base);
  line-height: 1.7;                     /* > 1,5 = recommandation RGAA */
  letter-spacing: 0.01em;                /* Léger espacement → dyslexie */
  word-spacing: 0.05em;
  color: var(--c-text);
  background: var(--c-bg);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* --- Typographie --------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--c-primary);
  letter-spacing: -0.01em;
  margin: 0 0 var(--s-4);
  text-wrap: balance;
}
h1 { font-size: var(--fs-3xl); font-weight: 600; }
h2 { font-size: var(--fs-2xl); margin-top: var(--s-7); }
h3 { font-size: var(--fs-lg); margin-top: var(--s-5); }
h4 { font-size: var(--fs-md); }

p, ul, ol { max-width: var(--w-content); margin: 0 0 var(--s-4); }
p { text-wrap: pretty; }

ul, ol { padding-left: 1.5em; }
li { margin-bottom: var(--s-2); }
li::marker { color: var(--c-accent); }

strong { font-weight: 700; }
em { font-style: normal; font-weight: 700; }   /* On bannit l'italique pour la dyslexie */

a {
  color: var(--c-primary);
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
a:hover, a:focus-visible {
  color: var(--c-accent);
  text-decoration-thickness: 2.5px;
}

/* --- Focus visible global ----------------------------------- */
:focus-visible {
  outline: 3px solid var(--c-focus);
  outline-offset: 3px;
  border-radius: 3px;
}

/* --- Skip link ---------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--s-4);
  background: var(--c-primary);
  color: #fff;
  padding: var(--s-3) var(--s-4);
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--radius);
  z-index: 1000;
}
.skip-link:focus { top: var(--s-4); }

/* --- Layout containers -------------------------------------- */
.container {
  width: min(100% - 2rem, var(--w-wide));
  margin-inline: auto;
}
.container-narrow {
  width: min(100% - 2rem, 760px);
  margin-inline: auto;
}

/* --- Header & nav ------------------------------------------- */
.site-header {
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(249, 246, 241, 0.92);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
  padding: var(--s-3) 0;
  width: min(100% - 2rem, var(--w-wide));
  margin-inline: auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  text-decoration: none;
  color: var(--c-primary);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--fs-lg);
  line-height: 1.15;
}
.brand img { height: 60px; width: auto; }
.brand__tagline {
  display: block;
  font-family: var(--f-body);
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--c-text-soft);
  margin-top: 4px;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 2px solid var(--c-primary);
  color: var(--c-primary);
  padding: var(--s-2) var(--s-3);
  border-radius: var(--radius);
  font-family: var(--f-body);
  font-size: var(--fs-sm);
  font-weight: 700;
  cursor: pointer;
  min-height: 48px;
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}
.main-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  text-decoration: none;
  color: var(--c-text);
  font-weight: 700;
  font-size: var(--fs-sm);
  padding: 0 var(--s-2);
  border-bottom: 2px solid transparent;
  border-radius: 2px;
}
.main-nav a:hover, .main-nav a:focus-visible, .main-nav a[aria-current="page"] {
  color: var(--c-primary);
  border-bottom-color: var(--c-accent);
}
.main-nav .btn-cta {
  min-height: 48px;
  padding: 0 var(--s-4);
  border-bottom: none;
}

/* --- Boutons ------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  font-family: var(--f-body);
  font-weight: 700;
  font-size: var(--fs-base);
  padding: var(--s-3) var(--s-5);
  border-radius: var(--radius);
  border: 2px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  min-height: 48px;                      /* Cible tactile RGAA */
  line-height: 1.2;
}
.btn-cta {
  background: var(--c-accent);
  color: #fff;
}
.btn-cta:hover, .btn-cta:focus-visible {
  background: var(--c-accent-hover);
  color: #fff;
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--c-primary);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--c-primary-hover);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--c-primary);
  border-color: var(--c-primary);
}
.btn-ghost:hover, .btn-ghost:focus-visible {
  background: var(--c-primary);
  color: #fff;
}

/* --- Hero ---------------------------------------------------- */
.hero {
  padding: var(--s-9) 0 var(--s-8);
  background: linear-gradient(180deg, var(--c-bg) 0%, var(--c-bg-alt) 100%);
  position: relative;
}
.hero__eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  margin-bottom: var(--s-4);
}
.hero__lead {
  font-size: var(--fs-md);
  color: var(--c-text-soft);
  max-width: 60ch;
  margin-bottom: var(--s-6);
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
}
.hero__meta {
  margin-top: var(--s-6);
  font-size: var(--fs-sm);
  color: var(--c-text-soft);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
}
.hero__meta span::before { content: "· "; color: var(--c-accent); margin-right: 0.25em; }
.hero__meta span:first-child::before { content: ""; margin: 0; }

/* --- Hero avec image ---------------------------------------- */
.hero--with-image .container {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: var(--s-7);
  align-items: center;
}
.hero__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  aspect-ratio: 1200 / 800;
  position: relative;
}
.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
@media (max-width: 860px) {
  .hero--with-image .container {
    grid-template-columns: 1fr;
    gap: var(--s-6);
  }
  .hero__image { aspect-ratio: 16 / 9; max-width: 600px; margin-inline: auto; }
}

/* --- Sections ----------------------------------------------- */
.section { padding: var(--s-8) 0; }
.section-alt { background: var(--c-bg-alt); }
.section-dark {
  background: var(--c-primary);
  color: #fff;
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: rgba(255,255,255,0.92); }
.section__eyebrow {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  margin-bottom: var(--s-3);
}

/* --- Cartes offres ------------------------------------------ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-5);
  margin-top: var(--s-6);
}
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--s-6);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--c-accent); transform: translateY(-2px); }
.card__tag {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  margin-bottom: var(--s-3);
}
.card h3 { margin-top: 0; }
.card ul { font-size: var(--fs-sm); color: var(--c-text-soft); }
.card__footer { margin-top: auto; padding-top: var(--s-4); }

/* --- Encadrés / blocs informatifs --------------------------- */
.callout {
  background: var(--c-surface);
  border-left: 5px solid var(--c-accent);
  border-radius: var(--radius);
  padding: var(--s-5);
  margin: var(--s-5) 0;
}
.callout--primary { border-left-color: var(--c-primary); }
.callout--success { border-left-color: var(--c-success); }
.callout p:last-child { margin-bottom: 0; }

/* --- Tarifs -------------------------------------------------- */
.pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--s-5);
  margin-top: var(--s-6);
}
.price-card {
  background: var(--c-surface);
  border: 2px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--s-6);
  display: flex;
  flex-direction: column;
}
.price-card--featured {
  border-color: var(--c-accent);
  position: relative;
}
.price-card--featured::before {
  content: "Le plus demandé";
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--c-accent);
  color: #fff;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.price-card__price {
  font-family: var(--f-display);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--c-primary);
  margin: var(--s-3) 0;
  line-height: 1;
}
.price-card__price small {
  display: block;
  font-family: var(--f-body);
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--c-text-soft);
  margin-top: var(--s-2);
}
.price-card ul {
  list-style: none;
  padding: 0;
  margin-bottom: var(--s-5);
}
.price-card li {
  padding-left: 1.6em;
  position: relative;
  margin-bottom: var(--s-3);
}
.price-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--c-success);
  font-weight: 700;
}
.price-card .btn { margin-top: auto; }

/* --- Stats / chiffres --------------------------------------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--s-4);
  margin: var(--s-6) 0;
}
.stat {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--s-5);
}
.stat__num {
  display: block;
  font-family: var(--f-display);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1;
  margin-bottom: var(--s-2);
}
.stat__label {
  font-size: var(--fs-sm);
  color: var(--c-text-soft);
  line-height: 1.4;
}

/* --- Étapes / process numérotés ------------------------------ */
.steps {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--s-5);
  counter-reset: step;
  margin-top: var(--s-6);
}
.steps li {
  counter-increment: step;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--s-5) var(--s-5) var(--s-5) calc(var(--s-7) + var(--s-2));
  position: relative;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: var(--s-5);
  left: var(--s-4);
  font-family: var(--f-display);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--c-accent);
}
.steps h3 { margin-top: 0; font-size: var(--fs-md); }
.steps p { margin-bottom: 0; }

/* --- FAQ ----------------------------------------------------- */
.faq details {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: var(--s-4) var(--s-5);
  margin-bottom: var(--s-3);
}
.faq summary {
  font-weight: 700;
  font-size: var(--fs-md);
  color: var(--c-primary);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: var(--s-6);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5em;
  color: var(--c-accent);
  font-weight: 400;
  transition: transform var(--transition);
}
.faq details[open] summary::after { content: "−"; }
.faq details[open] { border-color: var(--c-accent); }
.faq details p { margin-top: var(--s-3); margin-bottom: 0; }

/* --- Témoignages -------------------------------------------- */
.testimonial {
  background: var(--c-surface);
  border-left: 5px solid var(--c-accent);
  border-radius: var(--radius);
  padding: var(--s-5);
}
.testimonial blockquote {
  margin: 0;
  font-size: var(--fs-md);
  color: var(--c-text);
  font-style: normal;
}
.testimonial blockquote::before { content: "« "; color: var(--c-accent); font-weight: 700; }
.testimonial blockquote::after { content: " »"; color: var(--c-accent); font-weight: 700; }
.testimonial figcaption {
  margin-top: var(--s-3);
  font-size: var(--fs-sm);
  color: var(--c-text-soft);
}
.testimonial figcaption strong { color: var(--c-text); }

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--s-5);
  margin-top: var(--s-6);
}

/* --- Listes à coches ---------------------------------------- */
.check-list {
  list-style: none;
  padding: 0;
}
.check-list li {
  padding-left: 1.8em;
  position: relative;
  margin-bottom: var(--s-3);
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--c-success);
  font-weight: 700;
  font-size: 1.2em;
}

/* --- Tags / badges ------------------------------------------- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  list-style: none;
  padding: 0;
  margin: var(--s-3) 0;
}
.tag {
  display: inline-block;
  background: var(--c-bg-alt);
  color: var(--c-primary);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 700;
  border: 1px solid var(--c-border);
}

/* --- CTA banner --------------------------------------------- */
.cta-banner {
  background: var(--c-primary);
  color: #fff;
  padding: var(--s-8) 0;
  text-align: center;
}
.cta-banner h2 { color: #fff; }
.cta-banner p { color: rgba(255,255,255,0.9); margin-inline: auto; }
.cta-banner .btn-cta { margin-top: var(--s-4); }

/* --- Footer ------------------------------------------------- */
.site-footer {
  background: #001E3C;
  color: rgba(255,255,255,0.85);
  padding: var(--s-8) 0 var(--s-5);
  font-size: var(--fs-sm);
}
.site-footer h2, .site-footer h3 { color: #fff; font-size: var(--fs-md); }
.site-footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--s-6);
  margin-bottom: var(--s-6);
}
.site-footer ul { list-style: none; padding: 0; }
.site-footer li { margin-bottom: var(--s-2); }
.site-footer a { color: rgba(255,255,255,0.92); text-decoration-color: rgba(255,255,255,0.5); }
.site-footer a:hover, .site-footer a:focus-visible { color: #fff; text-decoration-color: #fff; }
.site-footer__legal {
  border-top: 1px solid rgba(255,255,255,0.18);
  padding-top: var(--s-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-4);
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.7);
}

/* --- Breadcrumb --------------------------------------------- */
.breadcrumb {
  font-size: var(--fs-sm);
  color: var(--c-text-soft);
  padding: var(--s-3) 0;
}
.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  padding: 0;
  margin: 0;
  max-width: none;
}
.breadcrumb li:not(:last-child)::after {
  content: "›";
  margin-left: var(--s-2);
  color: var(--c-text-muted);
}
.breadcrumb a { color: var(--c-text-soft); }
.breadcrumb [aria-current="page"] { color: var(--c-text); font-weight: 700; }

/* --- Responsive --------------------------------------------- */
@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--c-bg);
    border-top: 1px solid var(--c-border);
    border-bottom: 1px solid var(--c-border);
    padding: var(--s-4) 1rem;
  }
  .main-nav[data-open="true"] { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: var(--s-3); }
  .main-nav a { display: block; padding: var(--s-3) 0; border-bottom: 1px solid var(--c-border); border-radius: 0; }
  .main-nav .btn-cta { width: 100%; padding: var(--s-3) var(--s-4); }
  .site-header__inner { position: relative; flex-wrap: wrap; }
  .brand__tagline { display: none; }
  .hero { padding: var(--s-7) 0 var(--s-6); }
}

/* --- Print --------------------------------------------------- */
@media print {
  .site-header, .site-footer, .nav-toggle, .skip-link, .cta-banner { display: none; }
  body { background: #fff; color: #000; }
  a { color: #000; text-decoration: underline; }
}