/* ═══════════════════════════════════════════════════════════════
   SITE VITRINE — COMMON STYLES
   Partagé par toutes les pages : index, insights, track-record, privacy
   ═══════════════════════════════════════════════════════════════ */

/* ─── VARIABLES ─── */
:root {
  --navy: #1C2B3A;
  --navy-deep: #111D28;
  --navy-mid: #243447;
  --gold: #B49A6A;
  --gold-light: #C9B08A;
  --cream: #F5F0E8;
  --warm-white: #FAFAF7;
  --text-dark: #1C2B3A;
  --text-mid: #4A5A6B;
  --text-light: #8A9AAB;
  --border: rgba(180,154,106,0.25);
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Jost', sans-serif;
  background: var(--warm-white);
  color: var(--text-dark);
  overflow-x: hidden;
  font-weight: 300;
}

/* ─── LANGUE — AFFICHAGE/MASQUAGE ─── */
[data-lang="fr"] { display: none; }
.lang-fr [data-lang="fr"] { display: inline; }
.lang-fr [data-lang="en"] { display: none; }
.lang-fr [data-lang="both"] { display: inline; }

[data-lang="en"] { display: none; }
.lang-en [data-lang="en"] { display: inline; }
.lang-en [data-lang="fr"] { display: none; }
.lang-en [data-lang="both"] { display: inline; }

/* ─── BARRE DE LANGUE ─── */
.lang-bar {
  background: var(--navy-deep);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4rem;
  height: 40px;
  border-bottom: 1px solid rgba(180,154,106,0.2);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.lang-bar .address-line {
  font-size: 0.7rem;
  color: rgba(245,240,232,0.45);
  letter-spacing: 0.08em;
  font-weight: 300;
}
.lang-switcher { display: flex; gap: 1rem; align-items: center; }
.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: 'Jost', sans-serif;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: rgba(245,240,232,0.45);
  transition: color 0.3s;
  padding: 0;
}
.lang-btn.active { color: var(--gold); }
.lang-btn:hover { color: var(--gold-light); }
.lang-sep { color: rgba(180,154,106,0.3); font-size: 0.6rem; }

/* ─── NAVIGATION ─── */
nav {
  background: rgba(17,29,40,0.99);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 4rem;
  height: 72px;
  border-bottom: 1px solid rgba(180,154,106,0.15);
  position: sticky;
  top: 40px;
  z-index: 999;
}
.nav-logo { display: flex; flex-direction: column; text-decoration: none; }
.nav-logo-name {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--cream);
  letter-spacing: 0.12em;
  line-height: 1.2;
}
.nav-logo-sub {
  font-size: 0.6rem;
  color: var(--gold);
  letter-spacing: 0.2em;
  font-weight: 400;
  text-transform: uppercase;
}
.nav-links { display: flex; gap: 2.5rem; list-style: none; align-items: center; }
.nav-links a {
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(245,240,232,0.65);
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--cream); }
.nav-links a.active { color: var(--gold); }
.nav-cta {
  background: transparent !important;
  border: 1px solid var(--gold) !important;
  color: var(--gold) !important;
  padding: 0.45rem 1.2rem !important;
  transition: all 0.3s !important;
}
.nav-cta:hover {
  background: var(--gold) !important;
  color: var(--navy-deep) !important;
}

/* ─── BOUTON PRIMAIRE ─── */
.btn-primary {
  background: var(--gold);
  color: var(--navy-deep);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 0.9rem 2.2rem;
  transition: all 0.3s;
  display: inline-block;
}
.btn-primary:hover { background: var(--gold-light); }

/* ─── FOOTER DE BASE ─── */
footer {
  background: var(--navy-deep);
  border-top: 1px solid rgba(180,154,106,0.15);
  padding: 2rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-left { font-size: 0.72rem; color: rgba(245,240,232,0.3); }

/* ─── BURGER MENU ─── */
.burger-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1100;
}
.burger-btn span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--cream);
  transition: all 0.3s;
}
.burger-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger-btn.open span:nth-child(2) { opacity: 0; }
.burger-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--navy-deep);
  z-index: 1050;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(245,240,232,0.75);
  transition: color 0.3s;
}
.mobile-menu a:hover { color: var(--gold); }
.mobile-menu a.nav-cta {
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 0.6rem 1.8rem;
  margin-top: 1rem;
}

/* ─── ANIMATIONS ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: none; }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}
.reveal.visible { opacity: 1; transform: none; }

/* ─── RESPONSIVE COMMUN ─── */
@media (max-width: 900px) {
  .lang-bar, nav { padding: 0 1.5rem; }
  .nav-links { display: none; }
  .burger-btn { display: flex; }
  footer { padding: 2rem 1.5rem; flex-direction: column; }
}