/* ============================================================
   FONDATION LEFOULON-DELALANDE — main.css
   Variables · Reset · Typographie · Layout · Sidebar · Footer · Responsive
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  /* Couleurs */
  --navy:         #0A2240;
  --navy-hover:   #142E54;
  --navy-deep:    #061629;
  --gold:         #C9A84C;
  --gold-light:   #F3E9CC;
  --gold-dark:    #A07A2A;
  --blue:         #0170B9;
  --blue-hover:   #0158A0;
  --red:          #8B1A2E;
  --white:        #FFFFFF;
  --bg:           #F7F8FA;
  --bg-section:   #EEF1F6;
  --text:         #1E2A3B;
  --text-muted:   #6B7280;
  --border:       #E2E8F0;
  --border-light: #EEF2F7;

  /* Ombres */
  --shadow-xs: 0 1px 3px rgba(10,34,64,.07);
  --shadow-sm: 0 2px 8px rgba(10,34,64,.10);
  --shadow:    0 4px 20px rgba(10,34,64,.12);
  --shadow-lg: 0 12px 48px rgba(10,34,64,.16);

  /* Sidebar */
  --sb-collapsed: 72px;
  --sb-expanded:  280px;
  --sb-speed:     0.32s cubic-bezier(.4,0,.2,1);

  /* Layout */
  --max-content:    1200px;
  --mobile-header:  60px;

  /* Bordures */
  --r-sm: 4px;
  --r:    8px;
  --r-lg: 16px;
  --r-xl: 24px;

  /* Typographie */
  --font-heading: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; transition: color .2s; }
a:hover { color: var(--blue-hover); }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; }
input, textarea, select { font-family: inherit; }
table { border-collapse: collapse; }

/* ── Typographie ────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--navy);
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem);  font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
p  { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 600; }

/* Accent de section */
.section-label {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold-dark);
  margin-bottom: 10px;
}
.section-title {
  margin-bottom: 16px;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 640px;
}
/* Titre précédé d'un label de section */
.section-label + .title-line { margin: 10px 0 24px; }
/* Paragraphe d'introduction sous un titre */
.section-lead { color: var(--text-muted); margin: 20px 0 28px; }
/* Sous-titre au fil du contenu */
.content-heading { margin: 40px 0 20px; }

/* Ligne dorée sous les titres */
.title-line::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--gold);
  margin-top: 12px;
}
.title-line.centered::after { margin: 12px auto 0; }

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sb-collapsed);
  background: var(--navy);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: width var(--sb-speed);
  overflow: hidden;
  /* Ligne gold à droite visible quand collapsed → indique expandabilité */
  box-shadow: 2px 0 0 0 rgba(201,168,76,.35), 4px 0 24px rgba(0,0,0,.18);
}
.sidebar:hover,
.sidebar.is-open {
  width: var(--sb-expanded);
  box-shadow: 4px 0 32px rgba(0,0,0,.28);
}

/* Logo dans sidebar */
.sidebar-logo {
  display: flex;
  align-items: center;
  /* Centrage horizontal du logo quand collapsed : (72 - 42) / 2 = 15px */
  padding: 17px 15px;
  min-height: 76px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  flex-shrink: 0;
  text-decoration: none;
  overflow: hidden;
}
.sidebar-logo .logo-img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: var(--r);
  transition: transform .2s;
}
.sidebar-logo:hover .logo-img { transform: scale(1.05); }
.logo-text {
  margin-left: 12px;
  white-space: nowrap;
  opacity: 0;
  transition: opacity .18s .08s;
  line-height: 1.3;
}
.sidebar:hover .logo-text,
.sidebar.is-open .logo-text { opacity: 1; }
.logo-text strong {
  display: block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #fff;
}
.logo-text em {
  font-size: .65rem;
  font-style: normal;
  color: rgba(255,255,255,.55);
}

/* Nav menu */
.nav-menu {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px 0;
  scrollbar-width: none;
}
.nav-menu::-webkit-scrollbar { display: none; }

.nav-item { position: relative; }

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 11px 25px;
  color: rgba(255,255,255,.75);
  text-decoration: none;
  transition: background .18s, color .18s;
  white-space: nowrap;
  position: relative;
}
.nav-link:hover,
.nav-item.active > .nav-link {
  background: rgba(255,255,255,.10);
  color: #fff;
}
/* Barre or active */
.nav-item.active > .nav-link::before,
.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--gold);
}

.nav-icon {
  width: 22px; height: 22px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-label {
  font-size: .85rem;
  font-weight: 500;
  flex: 1;
  opacity: 0;
  max-width: 0;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity .15s .06s, max-width .15s .06s;
}
.sidebar:hover .nav-label,
.sidebar.is-open .nav-label {
  opacity: 1;
  max-width: 200px;
}

.nav-arrow {
  font-size: .75rem;
  color: rgba(255,255,255,.4);
  transition: opacity .15s .06s, transform .25s;
  opacity: 0;
}
.sidebar:hover .nav-arrow,
.sidebar.is-open .nav-arrow { opacity: 1; }
.nav-item.submenu-open > .nav-link .nav-arrow {
  transform: rotate(90deg);
  color: var(--gold);
  opacity: 1;
}

/* Sous-menus */
.nav-submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
  background: rgba(0,0,0,.18);
}
.nav-item.submenu-open .nav-submenu { max-height: 400px; }

.nav-submenu li a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px 9px 54px;
  font-size: .8rem;
  color: rgba(255,255,255,.6);
  transition: color .18s, background .18s;
  white-space: nowrap;
  text-decoration: none;
}
.nav-submenu li a:hover {
  color: #fff;
  background: rgba(255,255,255,.06);
}
.nav-submenu li a::before {
  content: '';
  display: inline-block;
  width: 14px; height: 1px;
  background: var(--gold);
  flex-shrink: 0;
  margin-right: 4px;
}

.nav-sep {
  height: 1px;
  background: rgba(255,255,255,.08);
  margin: 8px 14px;
}

/* Footer sidebar — sélecteur de langue */
.sidebar-foot {
  padding: 14px;
  border-top: 1px solid rgba(255,255,255,.1);
  flex-shrink: 0;
}
.lang-globe {
  display: flex;
  justify-content: center;
  color: rgba(255,255,255,.5);
  margin-bottom: 2px;
}
.sidebar:hover .lang-globe,
.sidebar.is-open .lang-globe { display: none; }

.lang-switcher {
  display: none;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}
.sidebar:hover .lang-switcher,
.sidebar.is-open .lang-switcher { display: flex; }

.lang-btn {
  background: transparent;
  border: 1px solid rgba(255,255,255,.25);
  color: rgba(255,255,255,.65);
  padding: 4px 9px;
  border-radius: var(--r-sm);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  transition: all .2s;
  line-height: 1;
}
.lang-btn:hover,
.lang-btn.active {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy);
}

/* ── Overlay mobile ─────────────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 998;
  backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; }

/* ── En-tête mobile ─────────────────────────────────────────── */
.mobile-header {
  display: none;
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--mobile-header);
  background: var(--navy);
  z-index: 900;
  align-items: center;
  padding: 0 16px;
  gap: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,.2);
}
.mobile-logo {
  height: 34px;
  width: auto;
}
.mobile-header .site-name {
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: #fff;
  line-height: 1.3;
  flex: 1;
}
.mobile-header .site-name em {
  display: block;
  font-size: .62rem;
  font-style: normal;
  font-weight: 400;
  color: rgba(255,255,255,.5);
  letter-spacing: .03em;
}

/* Hamburger */
.hamburger {
  background: none;
  border: none;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex-shrink: 0;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all .28s cubic-bezier(.4,0,.2,1);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Wrapper principal ──────────────────────────────────────── */
.page-wrapper {
  margin-left: var(--sb-collapsed);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--sb-speed);
}
main { flex: 1; }

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,.75);
  padding: 64px 40px 32px;
}
.footer-inner {
  max-width: var(--max-content);
  margin: 0 auto;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .footer-logo {
  height: 44px;
  width: auto;
  margin-bottom: 18px;
  filter: brightness(0) invert(1) opacity(.85);
}
.footer-brand p {
  font-size: .875rem;
  color: rgba(255,255,255,.55);
  line-height: 1.75;
}
.footer-brand .address {
  margin-top: 16px;
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  font-style: normal;
  line-height: 1.8;
}
.footer-col h4 {
  font-family: var(--font-body);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  transition: color .2s, padding-left .2s;
}
.footer-col ul a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-partners {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.08);
  margin-bottom: 40px;
}
.footer-partners h4 {
  font-family: var(--font-body);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.4);
  font-weight: 700;
  margin-bottom: 16px;
  text-align: center;
}
.footer-partners .partners-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}
.footer-partners .partner-link {
  color: rgba(255,255,255,.45);
  font-size: .8rem;
  font-weight: 500;
  letter-spacing: .03em;
  transition: color .2s;
}
.footer-partners .partner-link:hover { color: var(--gold); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
}
.footer-copy { font-size: .78rem; color: rgba(255,255,255,.35); }
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: .78rem;
  color: rgba(255,255,255,.35);
  transition: color .2s;
}
.footer-legal a:hover { color: rgba(255,255,255,.7); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 900px) {
  /* Sidebar mobile : overlay */
  .sidebar {
    width: var(--sb-expanded) !important;
    left: calc(-1 * var(--sb-expanded));
    transition: left var(--sb-speed);
  }
  .sidebar.is-open { left: 0; }
  .sidebar:hover:not(.is-open) { left: calc(-1 * var(--sb-expanded)); }
  .sidebar.is-open:hover { left: 0; }
  /* Toujours expanded en mobile */
  .sidebar .nav-label  { opacity: 1 !important; }
  .sidebar .logo-text  { opacity: 1 !important; }
  .sidebar .lang-switcher { display: flex !important; }
  .sidebar .lang-globe    { display: none !important; }
  .sidebar .nav-arrow     { opacity: 1 !important; }

  .page-wrapper { margin-left: 0; padding-top: var(--mobile-header); }
  .mobile-header { display: flex; }
}

@media (max-width: 680px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-legal { justify-content: center; flex-wrap: wrap; gap: 12px 20px; }
  footer { padding: 44px 20px 24px; }
}

/* ── Utilitaires ────────────────────────────────────────────── */
.container {
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 40px;
}
@media (max-width: 900px) { .container { padding: 0 24px; } }
@media (max-width: 600px) { .container { padding: 0 16px; } }

.section { padding: 80px 0; }
.section--sm { padding: 56px 0; }
.section--lg { padding: 100px 0; }
.section--dark { background: var(--navy); }
.section--blue { background: var(--blue); color: #fff; }
.section--gold { background: var(--gold-light); }
.section--bg   { background: var(--bg-section); }

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-navy   { color: var(--navy) !important; }
.text-gold   { color: var(--gold) !important; }
.text-muted  { color: var(--text-muted) !important; }
.text-white  { color: #fff !important; }

/* Espacements */
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mt-60 { margin-top: 60px; }
.mt-64 { margin-top: 64px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }

/* Note discrète (mentions, liens annexes) */
.small-note {
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Bouton pleine largeur */
.btn-block { width: 100%; justify-content: center; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}