/* ==========================================================================
   MÉRIDIEN — Système de design
   Palette : force du sombre, sagesse du végétal, confiance du bronze,
   retenue du parchemin. Structure inspirée de l'apparat des textes fiscaux
   (citations d'articles, annotations marginales, numérotation).
   ========================================================================== */

:root {
  /* Couleurs */
  --ink: #1B241F;          /* fond sombre — force, gravité */
  --ink-soft: #26332C;     /* variante légèrement plus claire */
  --forest: #2E4A3D;       /* vert profond — sagesse, harmonie, couleur de marque */
  --forest-light: #46705C; /* survols, accents secondaires */
  --parchment: #F3EFE3;    /* fond clair — retenue, calme */
  --cream: #FBF9F3;        /* fond des cartes, plus clair que le parchemin */
  --bronze: #A9773F;       /* accent — confiance, sobriété, jamais criard */
  --bronze-light: #C79A5E;
  --sable: #86765F;        /* texte secondaire, bordures discrètes */
  --line: rgba(27, 36, 31, 0.12);
  --line-dark: rgba(243, 239, 227, 0.16);

  /* Typographie */
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;

  /* Rythme */
  --section-pad: clamp(4rem, 8vw, 7.5rem);
  --edge-pad: clamp(1.25rem, 5vw, 4rem);
  --radius: 2px;
  --max-w: 1180px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--parchment);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--edge-pad);
  padding-right: var(--edge-pad);
}

/* ---------- Typo ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.4rem, 5vw, 4.1rem); font-weight: 460; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.3rem; font-weight: 600; }

p { margin: 0 0 1em; }
.lead { font-size: 1.2rem; color: var(--sable); max-width: 46ch; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bronze);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin-bottom: 1.1em;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--bronze);
  display: inline-block;
}
.on-dark .eyebrow { color: var(--bronze-light); }
.on-dark .eyebrow::before { background: var(--bronze-light); }

.mono-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--bronze);
  letter-spacing: 0.02em;
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95em 1.6em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn-primary {
  background: var(--bronze);
  color: var(--cream);
}
.btn-primary:hover { background: var(--bronze-light); transform: translateY(-1px); }
.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
  background: transparent;
}
.on-dark .btn-ghost { border-color: var(--line-dark); color: var(--parchment); }
.btn-ghost:hover { border-color: var(--bronze); color: var(--bronze); }
.on-dark .btn-ghost:hover { color: var(--bronze-light); border-color: var(--bronze-light); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(27, 36, 31, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-dark);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--parchment);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.logo span { color: var(--bronze-light); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}
.main-nav a {
  color: var(--parchment);
  text-decoration: none;
  font-size: 0.92rem;
  opacity: 0.82;
  transition: opacity 0.2s ease;
}
.main-nav a:hover { opacity: 1; color: var(--bronze-light); }
.nav-links { display: flex; gap: 2.1rem; align-items: center; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--parchment);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 780px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--ink);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem var(--edge-pad) 2rem;
    gap: 1.2rem;
    border-bottom: 1px solid var(--line-dark);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links .btn { width: 100%; justify-content: center; }
}

/* ---------- Sections génériques ---------- */
section { padding: var(--section-pad) 0; }
.on-dark { background: var(--ink); color: var(--parchment); }
.on-dark .lead { color: rgba(243,239,227,0.68); }
.on-cream { background: var(--cream); }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(4rem, 9vw, 6.5rem); overflow: hidden; }
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}
.hero h1 { color: var(--parchment); margin-bottom: 0.5em; }
.hero .lead { margin-bottom: 2em; }
.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-figure { position: relative; }
.hero-figure svg { width: 100%; height: auto; }
.hero-figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sable);
  text-align: center;
  margin-top: 0.8rem;
}
.draw-path {
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  animation: draw 2.1s ease forwards 0.3s;
}
@keyframes draw { to { stroke-dashoffset: 0; } }

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-figure { order: -1; max-width: 340px; margin: 0 auto 1rem; }
}

/* ---------- Bande de confiance ---------- */
.trust-band { padding: 2.6rem 0; border-bottom: 1px solid var(--line); }
.trust-band .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.4rem 2.4rem;
}
.trust-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sable);
  white-space: nowrap;
}
.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
  list-style: none;
  margin: 0; padding: 0;
  font-family: var(--font-display);
  font-style: italic;
  color: var(--forest);
}
.trust-list li::after { content: "·"; margin-left: 0.9rem; color: var(--sable); }
.trust-list li:last-child::after { content: none; }

/* ---------- Expertise ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 3rem;
}
.pillar {
  background: var(--parchment);
  padding: 2.2rem 2rem;
}
.pillar .mono-num { display: block; margin-bottom: 1rem; }
.pillar h3 { margin-bottom: 0.6rem; }
.pillar p { color: var(--sable); font-size: 0.96rem; margin-bottom: 0; }
@media (max-width: 820px) {
  .pillars { grid-template-columns: 1fr; }
}

/* ---------- Méthode ---------- */
.method-list {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
}
.method-item {
  display: grid;
  grid-template-columns: 90px 1fr 1.1fr;
  gap: 2rem;
  padding: 1.9rem 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.method-item .mono-num { padding-top: 0.2em; }
.method-item h3 { margin-bottom: 0.4rem; }
.method-note {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--sable);
  border-left: 1px solid var(--bronze);
  padding-left: 1rem;
  line-height: 1.55;
}
@media (max-width: 780px) {
  .method-item { grid-template-columns: 1fr; gap: 0.6rem; }
  .method-note { border-left: none; padding-left: 0; border-top: 1px solid var(--line); padding-top: 0.6rem; margin-top: 0.4rem; }
}

/* ---------- Cartes d'articles ---------- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  margin-top: 3rem;
}
.article-card {
  background: var(--cream);
  border: 1px solid var(--line);
  padding: 1.8rem;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.article-card:hover { border-color: var(--bronze); transform: translateY(-3px); }
.article-card .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: 0.9rem;
}
.article-card h3 { margin-bottom: 0.7rem; font-size: 1.15rem; }
.article-card p { color: var(--sable); font-size: 0.92rem; flex-grow: 1; }
.article-card .meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--sable);
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
@media (max-width: 900px) {
  .article-grid { grid-template-columns: 1fr; }
}

.section-foot { margin-top: 2.6rem; text-align: center; }
.text-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--forest);
  border-bottom: 1px solid var(--bronze);
  padding-bottom: 2px;
}
.text-link:hover { color: var(--bronze); }

/* ---------- Contact ---------- */
.contact .wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3.5rem;
}
.contact h2 { color: var(--parchment); margin-bottom: 0.7em; }
.contact-info-list {
  list-style: none; padding: 0; margin: 2.2rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.88rem;
}
.contact-info-list li { padding: 0.7rem 0; border-top: 1px solid var(--line-dark); color: rgba(243,239,227,0.8); }
.contact-info-list li strong { color: var(--parchment); display: block; font-family: var(--font-body); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.3rem; color: var(--bronze-light); }

.form-grid { display: grid; gap: 1.1rem; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bronze-light);
  margin-bottom: 0.5rem;
}
input, select, textarea {
  width: 100%;
  background: var(--ink-soft);
  border: 1px solid var(--line-dark);
  color: var(--parchment);
  padding: 0.85em 1em;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--bronze);
}
textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.78rem; color: var(--sable); margin-top: 0.8rem; }
@media (max-width: 780px) {
  .contact .wrap { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(243,239,227,0.65);
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--line-dark);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-dark);
}
.footer-nav { display: flex; gap: 1.6rem; flex-wrap: wrap; list-style: none; padding: 0; margin: 0; font-size: 0.88rem; }
.footer-nav a { text-decoration: none; color: rgba(243,239,227,0.75); }
.footer-nav a:hover { color: var(--bronze-light); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-top: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Pages Blog / Article
   ========================================================================== */
.page-hero {
  padding: clamp(3.2rem, 7vw, 5rem) 0 3rem;
}
.page-hero h1 { color: var(--parchment); max-width: 18ch; }
.page-hero .lead { margin-top: 0.8rem; }

.blog-list { padding-top: var(--section-pad); }
.post-row {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 1.8rem;
  align-items: baseline;
  padding: 1.8rem 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
}
.blog-list-inner .post-row:last-child { border-bottom: 1px solid var(--line); }
.post-row .date { font-family: var(--font-mono); font-size: 0.78rem; color: var(--sable); }
.post-row .post-main .tag {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--bronze); display: block; margin-bottom: 0.5rem;
}
.post-row .post-main h3 { font-size: 1.35rem; margin-bottom: 0.4rem; }
.post-row .post-main p { color: var(--sable); font-size: 0.94rem; margin: 0; max-width: 60ch; }
.post-row .arrow { font-family: var(--font-mono); color: var(--bronze); font-size: 1.3rem; transition: transform 0.2s ease; }
.post-row:hover .arrow { transform: translateX(4px); }
.post-row:hover h3 { color: var(--forest-light); }
@media (max-width: 700px) {
  .post-row { grid-template-columns: 1fr; gap: 0.4rem; }
  .post-row .arrow { display: none; }
}

/* ---------- Article ---------- */
.article-header { padding: clamp(3rem, 7vw, 5rem) 0 2.5rem; }
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--sable);
  text-decoration: none;
  display: inline-block;
  margin-bottom: 1.6rem;
}
.breadcrumb:hover { color: var(--bronze); }
.article-header h1 { max-width: 22ch; margin-bottom: 1rem; }
.article-meta {
  display: flex; gap: 1.2rem; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--sable);
}

.article-body { padding-bottom: var(--section-pad); }
.article-body .wrap {
  display: grid;
  grid-template-columns: minmax(0,1fr) 240px;
  gap: 3.5rem;
  align-items: start;
}
.prose { max-width: 66ch; }
.prose h2 { font-size: 1.55rem; margin-top: 2.4em; margin-bottom: 0.6em; }
.prose h2 .mono-num { display: block; font-size: 0.75rem; margin-bottom: 0.5rem; }
.prose p { color: #2A332D; }
.prose ul { padding-left: 1.2em; color: #2A332D; }
.prose li { margin-bottom: 0.5em; }
.prose strong { color: var(--forest); }
blockquote.pull {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--forest);
  border-left: 2px solid var(--bronze);
  padding-left: 1.4rem;
  margin: 2rem 0;
  line-height: 1.4;
}
.aside-notes {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}
.margin-note {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--sable);
  border-top: 1px solid var(--bronze);
  padding-top: 0.7rem;
}
.margin-note strong { display: block; color: var(--forest); font-family: var(--font-body); font-size: 0.78rem; margin-bottom: 0.35rem; text-transform: uppercase; letter-spacing: 0.05em;}
@media (max-width: 900px) {
  .article-body .wrap { grid-template-columns: 1fr; }
  .aside-notes { position: static; flex-direction: row; flex-wrap: wrap; }
  .margin-note { flex: 1 1 240px; }
}

.disclaimer {
  background: var(--cream);
  border: 1px solid var(--line);
  border-left: 3px solid var(--bronze);
  padding: 1.4rem 1.6rem;
  font-size: 0.88rem;
  color: var(--sable);
  margin: 2.8rem 0;
  max-width: 66ch;
}
.disclaimer strong { color: var(--ink); }

.author-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.2rem;
  background: var(--ink);
  color: var(--parchment);
  padding: 2rem 2.2rem;
  margin-top: 2.8rem;
  max-width: 66ch;
}
.author-box p { margin: 0; color: rgba(243,239,227,0.75); font-size: 0.92rem; }
.author-box strong { font-family: var(--font-display); font-size: 1.15rem; display: block; margin-bottom: 0.3rem; color: var(--parchment); }

.related { padding: var(--section-pad) 0; border-top: 1px solid var(--line); }