/* =========================================================
   Arcus Partners - preview statique
   Couleurs issues de la charte (palette definitive, v4)
   ========================================================= */

:root {
  /* Couleurs */
  /* Les 5 couleurs de la charte */
  --navy: #333932;        /* vert foncé */
  --charcoal: #4E5759;    /* gris */
  --beige: #DBD9D0;
  --grey-light: #DDE1E1;  /* gris clair */
  --sage: #798270;        /* vert clair */

  /* Rôles */
  --ink: var(--navy);
  --grey: var(--charcoal);
  --line: var(--beige);
  --white: #FFFFFF;
  --placeholder: var(--beige);
  --on-navy: var(--grey-light);

  /* Typo */
  --font: "Arimo", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Espacements */
  --gutter: clamp(20px, 6.5vw, 96px);
  --section-y: clamp(64px, 9vw, 120px);
  --max: 1440px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 96px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

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

img { max-width: 100%; display: block; }
a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--charcoal); }
h1, h2, h3 { margin: 0; color: var(--navy); }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

:focus-visible { outline: 2px solid var(--navy); outline-offset: 3px; }
.stats :focus-visible, .cta :focus-visible, .site-footer :focus-visible { outline-color: var(--white); }

.skip-link {
  position: absolute; left: 16px; top: -48px;
  padding: 10px 16px; background: var(--navy); color: var(--white); z-index: 100;
}
.skip-link:focus { top: 12px; color: var(--white); }

.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- Éléments communs ---------- */

.eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--charcoal);
}
/* Le vert clair ne passe pas le contraste AA en petit corps : il reste en filet décoratif */
.eyebrow::before {
  content: ""; display: inline-block; vertical-align: middle;
  width: 28px; height: 2px; margin-right: 12px; background: var(--sage);
}

.section-title {
  font-size: clamp(32px, 3.4vw, 48px);
  line-height: 1.12;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.lead, .section-intro, .prose p {
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.7;
  color: var(--charcoal);
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px;
  padding: 12px 22px;
  border-radius: 2px;
  font-weight: 500;
  transition: background-color .2s ease, color .2s ease;
}
.btn-lg { padding: 18px 30px; font-size: 16px; }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--charcoal); color: var(--white); }
.btn-light { background: var(--white); color: var(--navy); white-space: nowrap; }
.btn-light:hover { background: var(--beige); }

.btn-link {
  display: inline-flex; align-items: center; min-height: 44px;
  font-weight: 500;
  border-bottom: 1px solid currentColor;
}

.placeholder {
  background: var(--placeholder);
  display: flex; align-items: flex-end; justify-content: flex-start;
  padding: 24px;
}
.placeholder-label {
  font-size: 13px; letter-spacing: .06em;
  color: var(--white); background: var(--navy);
  padding: 6px 10px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--grey-light);
}
.header-inner {
  height: 88px;
  display: flex; align-items: center; justify-content: space-between;
}

.brand { display: inline-flex; align-items: center; gap: .3em; color: var(--navy); font-size: 40px; }
.brand-mark { width: .775em; height: 1em; flex: none; }
.brand-name { display: flex; flex-direction: column; gap: .1em; line-height: .76; letter-spacing: 0; }
.brand-name b { font-size: .66em; font-weight: 700; }
.brand-name span { font-size: .56em; font-weight: 400; }
.brand--light { color: var(--white); }
.brand--light:hover { color: var(--white); }

.nav-list { display: flex; align-items: center; gap: 36px; font-size: 15px; }
.nav-list a:not(.btn) { color: var(--ink); }
.nav-list a:not(.btn):hover { color: var(--charcoal); text-decoration: underline; text-underline-offset: 6px; }
.nav-lang { font-size: 13px; letter-spacing: .1em; color: var(--grey); }
.nav-lang a[aria-current] { font-weight: 600; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 0; background: transparent; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 7px;
}
.nav-toggle-bar {
  width: 22px; height: 1.8px; background: var(--navy);
  transition: transform .25s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:first-child { transform: translateY(4.4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:last-child  { transform: translateY(-4.4px) rotate(-45deg); }

/* ---------- Hero ---------- */

.hero {
  max-width: var(--max); margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 80px;
  min-height: 720px;
  background: var(--white);
  padding-left: var(--gutter);
}
.hero-text {
  display: flex; flex-direction: column; justify-content: center; gap: 30px;
  padding-block: 80px;
}
.hero-title {
  font-size: clamp(40px, 4.8vw, 68px);
  line-height: 1.04;
  font-weight: 400;
  letter-spacing: -0.02em;
}
.lead { max-width: 520px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; }
.tagline { font-size: 15px; font-style: italic; color: var(--charcoal); }

/* ---------- Stats ---------- */

.stats { background: var(--navy); color: var(--white); }
.stats-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px 48px; padding-block: 44px;
}
.stat { display: flex; align-items: baseline; gap: 16px; }
.stat-value { white-space: nowrap; font-size: clamp(34px, 3vw, 44px); font-weight: 300; }
.stat-label { font-size: 15px; color: var(--on-navy); }

/* ---------- Sections ---------- */

.section { padding-block: var(--section-y); }
.section--white { background: var(--white); }
.section--beige { background: var(--beige); }
.section--center { text-align: center; }

.section-head { display: flex; flex-direction: column; gap: 16px; margin-bottom: 56px; }
.section-head--split {
  flex-direction: row; justify-content: space-between; align-items: flex-end; gap: 80px;
}
.section-head--split > div { display: flex; flex-direction: column; gap: 16px; }
.section-intro { max-width: 440px; }

/* Cartes expertises */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.card {
  background: var(--white);
  padding: 48px 40px;
  min-height: 320px;
  display: flex; flex-direction: column; gap: 20px;
  border-bottom: 2px solid transparent;
  transition: border-color .25s ease, transform .25s ease;
}
.card:hover { border-color: var(--sage); transform: translateY(-2px); }
.card-num { font-size: 14px; letter-spacing: .1em; color: var(--charcoal); }
.card-title { font-size: 26px; font-weight: 500; line-height: 1.25; }
.card p { font-size: 16px; line-height: 1.65; color: var(--charcoal); }
.card-link { margin-top: auto; font-weight: 500; font-size: 15px; min-height: 44px; display: inline-flex; align-items: center; }

/* Modèle */
.two-cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 96px; }
.prose { display: flex; flex-direction: column; gap: 24px; }
.points { counter-reset: none; }
.point {
  display: flex; gap: 32px;
  padding-block: 36px;
  border-top: 1px solid var(--line);
}
.point:last-child { border-bottom: 1px solid var(--line); }
.point-num { font-size: 15px; color: var(--charcoal); min-width: 40px; }
.point h3 { font-size: 24px; font-weight: 500; margin-bottom: 10px; }
.point p { color: var(--charcoal); line-height: 1.65; }

/* Valeurs */
.values {
  margin: 40px auto 0; max-width: 1100px;
  display: flex; flex-wrap: wrap; justify-content: center; gap: 16px 0;
  font-size: clamp(24px, 2.4vw, 34px); font-weight: 300; color: var(--navy);
}
.values li { padding-inline: 24px; position: relative; }
.values li + li::before {
  content: "·"; position: absolute; left: -4px; color: var(--sage);
}

/* Équipe */
.team { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.member { margin: 0; display: flex; flex-direction: column; gap: 16px; }
.member-photo { aspect-ratio: 4 / 5; align-items: center; justify-content: center; }
.member-photo .placeholder-label { background: none; color: var(--grey); }
.member figcaption { display: flex; flex-direction: column; gap: 4px; }
.member strong { font-size: 22px; font-weight: 500; color: var(--navy); }
.member span { font-size: 15px; color: var(--grey); }

/* ---------- Formulaire de contact ---------- */
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 14px; font-weight: 500; color: var(--ink); }
.field label span { font-weight: 400; color: var(--grey); }
.field input, .field textarea {
  font: inherit; font-size: 16px; padding: 12px 14px; border: 1px solid var(--charcoal);
  border-radius: 2px; background: var(--white); color: var(--ink); resize: vertical;
}
.field input:focus, .field textarea:focus { outline: 2px solid var(--navy); outline-offset: 1px; border-color: var(--navy); }
.contact-form .btn { align-self: flex-start; }
.form-note { font-size: 14px; color: var(--charcoal); }

.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-info-title { font-size: 22px; font-weight: 400; color: var(--navy); margin-bottom: 12px; }
.contact-info address { font-style: normal; line-height: 1.8; color: var(--charcoal); }
.contact-info .btn-link { align-self: flex-start; }
.map-frame { aspect-ratio: 4 / 3; border: 1px solid var(--line); overflow: hidden; }
.map-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.placeholder-label--static {
  display: inline-block; margin-top: -8px;
  font-size: 12px; letter-spacing: .04em; color: var(--grey); background: none; padding: 0;
}

/* CTA */
.cta { background: var(--charcoal); color: var(--white); padding-block: clamp(64px, 8vw, 110px); }
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 40px 80px; }
.cta-title { color: var(--white); font-size: clamp(34px, 3.6vw, 52px); line-height: 1.1; font-weight: 300; }
.cta-text { margin-top: 20px; font-size: 18px; color: var(--on-navy); max-width: 560px; }

/* Footer */
.site-footer { background: var(--navy); color: var(--on-navy); font-size: 15px; }
.footer-inner { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; padding-block: 56px 32px; }
.footer-brand { display: flex; flex-direction: column; gap: 16px; }
.footer-brand .brand { font-size: 36px; }
address { font-style: normal; line-height: 1.8; }
.footer-links { display: flex; gap: 40px; }
.footer-links a { color: var(--on-navy); }
.footer-links a:hover { color: var(--white); }
.footer-bottom { padding-block: 20px 32px; border-top: 1px solid rgba(255,255,255,.08); font-size: 13px; }

/* ---------- Animation d'apparition (JS ajoute .is-visible) ---------- */

.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1024px) {
  .nav-list { gap: 24px; }
  .hero { gap: 48px; }
  .two-cols { gap: 56px; }
  .card { padding: 36px 28px; }
}

@media (max-width: 900px) {
  .header-inner { height: 72px; }
  .brand { font-size: 32px; }

  .nav-toggle { display: flex; }
  .nav {
    position: fixed; inset: 72px 0 0 0;
    background: var(--white);
    padding: 32px var(--gutter);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .3s ease, visibility .3s;
  }
  .nav.is-open { transform: none; visibility: visible; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; font-size: 22px; }
  .nav-list li { border-bottom: 1px solid var(--line); }
  .nav-list li:not(.nav-lang) a:not(.btn) { display: flex; min-height: 64px; align-items: center; }
  .nav-lang { display: flex; gap: 12px; align-items: center; padding-block: 12px; font-size: 15px; }
  .nav-lang a { display: inline-flex; min-height: 44px; min-width: 44px; align-items: center; }
  .nav-list li:last-child { border: 0; padding-top: 24px; }
  .nav-list .btn { width: 100%; min-height: 56px; font-size: 17px; }

  .hero { grid-template-columns: 1fr; gap: 0; padding-left: 0; min-height: 0; }
  .hero-text { padding: 48px var(--gutter) 40px; gap: 22px; }
  .hero-actions .btn { width: 100%; }
  .hero-media { min-height: 280px; }

  .stats-grid { grid-template-columns: 1fr; gap: 16px; padding-block: 32px; }

  .section-head--split { flex-direction: column; align-items: flex-start; gap: 20px; }
  .section-head { margin-bottom: 32px; }

  .cards { grid-template-columns: 1fr; gap: 16px; }
  .card { min-height: 0; padding: 28px 24px; gap: 12px; }
  .card-title { font-size: 22px; }

  .two-cols { grid-template-columns: 1fr; gap: 32px; }
  .point { flex-direction: column; gap: 8px; padding-block: 22px; }
  .point h3 { font-size: 19px; }

  .values { flex-direction: column; align-items: flex-start; text-align: left; margin-top: 20px; gap: 6px; }
  .section--center { text-align: left; }
  .values li { padding-inline: 0; }
  .values li + li::before { content: none; }

  .team { grid-template-columns: 1fr; gap: 20px; }
  .member { flex-direction: row; align-items: center; }
  .member-photo { width: 96px; flex-shrink: 0; aspect-ratio: 1; padding: 0; }
  .member-photo .placeholder-label { display: none; }
  .member strong { font-size: 18px; }

  .cta-inner { flex-direction: column; align-items: stretch; }
  .cta .btn { width: 100%; }

  .footer-inner { flex-direction: column; }
  .footer-links { gap: 24px; flex-wrap: wrap; }
}

body.nav-open { overflow: hidden; }

/* Badge de navigation entre les pistes (présentation client) */
.version-badge {
  position: fixed; left: 16px; bottom: 16px; z-index: 60;
  display: inline-flex; align-items: center; gap: 6px; min-height: 44px;
  padding: 10px 16px; border-radius: 999px;
  background: var(--ink); color: var(--white); font-size: 14px; font-weight: 500;
  box-shadow: 0 6px 20px rgba(0,0,0,.18);
}
.version-badge:hover { background: var(--charcoal); color: var(--white); }