/* ============================================================================
   site-v6.css — Couche d'harmonisation V6 (pages intérieures)
   Chargée APRÈS styles-v4.css. Aligne header, nav, boutons, menu mobile,
   footer et hero de page sur le design system de la landing (styles-v5.css).
   styles-v4.css reste la base (grilles, cartes, sections) — ici on ne
   réécrit que l'identité visuelle partagée.
   ========================================================================== */

:root {
  --cyan: #22d3ee;
  --cyan-deep: #0891b2;
  --green: #34d399;
  --violet: #a78bfa;
  --line: rgba(255,255,255,.08);
  --line-strong: rgba(255,255,255,.14);
  --txt-1: #f2f4f8;
  --txt-2: rgba(226,232,240,.72);
  --txt-3: rgba(148,163,184,.75);
  --glow-cyan: rgba(34,211,238,.35);
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body-v6: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  --header-h: 72px;
  --ease-out: cubic-bezier(.16,1,.3,1);
  --t-fast: .18s ease;
  --t-base: .45s var(--ease-out);
}

/* ---------- Base ---------- */
body { font-family: var(--font-body-v6); }
h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: -.015em; }
::selection { background: rgba(34,211,238,.28); color: #fff; }

/* ---------- Header (glass, identique à la landing) ---------- */
.site-header {
  background: rgba(8,8,8,.55);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: background var(--t-base), border-color var(--t-base);
  z-index: 1000;
}
.site-header.scrolled {
  background: rgba(8,8,8,.82);
  border-bottom-color: var(--line);
}
.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  max-width: 1200px;
  min-width: 0;
  margin: 0 auto;
  height: var(--header-h);
  min-height: var(--header-h);
  padding: 0 1.5rem;
}
.site-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -.02em;
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
}
.site-logo span {
  color: var(--cyan);
  font-weight: 500;
  margin-left: .3rem;
}

/* ---------- Nav desktop ---------- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 1.9rem;
}
.main-nav .nav-link {
  position: relative;
  font-size: .92rem;
  font-weight: 500;
  color: var(--txt-2);
  padding: .3rem 0;
  text-transform: none;
  letter-spacing: normal;
  white-space: nowrap;
  transition: color var(--t-fast);
}
.main-nav .nav-link::after {
  content: '';
  position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1.5px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .35s var(--ease-out);
}
.main-nav .nav-link:hover { color: var(--txt-1); }
.main-nav .nav-link:hover::after { transform: scaleX(1); transform-origin: left; }
.header-cta { margin-left: .5rem; }

/* ---------- Barre de progression (landing = inner pages) ---------- */
.nav-progress {
  position: absolute; left: 0; bottom: -1px;
  height: 2px; width: 0;
  background: linear-gradient(90deg, var(--cyan), var(--green), var(--violet));
  box-shadow: 0 0 12px var(--glow-cyan);
}

/* ---------- Boutons (identiques à la landing) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: .01em;
  text-transform: none;
  border-radius: 12px;
  transition: transform var(--t-fast), box-shadow var(--t-fast),
              background var(--t-fast), border-color var(--t-fast), color var(--t-fast);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-deep) 100%);
  color: #04121a;
  border: none;
  box-shadow: 0 4px 24px rgba(34,211,238,.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--cyan-deep) 100%);
  box-shadow: 0 6px 32px rgba(34,211,238,.45);
  transform: translateY(-2px);
  color: #04121a;
}
.btn-ghost {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line-strong);
  color: var(--txt-1);
}
.btn-ghost:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.28); transform: translateY(-2px); }
.btn-sm  { padding: .55rem 1.1rem; font-size: .9rem; }
.btn-lg  { padding: .95rem 1.7rem; font-size: 1.05rem; }
.header-cta .btn { padding: .55rem 1.1rem; font-size: .9rem; }

/* ---------- Burger (animation X, comme la landing) ---------- */
.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 10px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 0;
}
.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--txt-1);
  border-radius: 2px;
  transition: transform .3s var(--ease-out), opacity .2s ease;
}
.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Menu mobile plein écran (identique à la landing) ---------- */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 999; /* sous le header (z 1000) pour garder le burger visible */
  background: rgba(6,6,8,.97);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility 0s linear .35s;
}
.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  transition: opacity .35s ease;
}
.mobile-menu-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  text-align: center;
  padding: 2rem;
}
.mobile-link {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 6vw, 2rem);
  font-weight: 600;
  color: var(--txt-2);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .4s ease, transform .5s var(--ease-out), color var(--t-fast);
}
.mobile-menu.open .mobile-link { opacity: 1; transform: none; }
.mobile-menu.open .mobile-link:nth-child(1) { transition-delay: .05s; }
.mobile-menu.open .mobile-link:nth-child(2) { transition-delay: .10s; }
.mobile-menu.open .mobile-link:nth-child(3) { transition-delay: .15s; }
.mobile-menu.open .mobile-link:nth-child(4) { transition-delay: .20s; }
.mobile-menu.open .mobile-link:nth-child(5) { transition-delay: .25s; }
.mobile-menu.open .mobile-link:nth-child(6) { transition-delay: .30s; }
.mobile-menu.open .mobile-link:nth-child(7) { transition-delay: .35s; }
.mobile-menu.open .mobile-link:nth-child(8) { transition-delay: .40s; }
.mobile-menu.open .mobile-link:nth-child(9) { transition-delay: .45s; }
.mobile-link:hover { color: var(--cyan); }
.mobile-cta {
  margin-top: 1.2rem;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .4s ease .5s, transform .5s var(--ease-out) .5s,
              box-shadow var(--t-fast);
}
.mobile-menu.open .mobile-cta { opacity: 1; transform: none; }

/* ---------- Mobile : nav desktop masquée, menu plein écran actif ---------- */
@media (max-width: 1023px) {
  .header-container { gap: 1rem; padding: 0 1.1rem; }
  .main-nav { display: none !important; }
  .mobile-menu-toggle { display: flex; }
}

/* ---------- Footer (aligné sur la landing) ---------- */
.site-footer {
  background: #060606;
  border-top: 1px solid var(--line);
}
.footer-links h4,
.footer-grid h4 {
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .2em;
  color: var(--txt-2);
  margin-bottom: .6rem;
}
.footer-link {
  color: var(--txt-3);
  transition: color var(--t-fast), transform var(--t-fast);
}
.footer-link:hover { color: var(--cyan); transform: translateX(3px); }
.social-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--txt-3);
  transition: color var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}
.social-icon:hover {
  color: var(--cyan);
  border-color: rgba(34,211,238,.4);
  transform: translateY(-2px);
}

/* ---------- Hero de page (ih-hero / page-header) ---------- */
.ih-hero,
.page-header {
  background:
    radial-gradient(ellipse 70% 55% at 75% -10%, rgba(34,211,238,.10), transparent 65%),
    radial-gradient(ellipse 50% 45% at 10% 110%, rgba(52,211,153,.05), transparent 60%),
    var(--color-black, #080808);
  padding: calc(var(--header-h) + 3.5rem) 1.5rem 3.5rem;
}
.ih-hero .ih-badge,
.page-header .page-header-label {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid rgba(34,211,238,.3);
  background: rgba(34,211,238,.06);
  padding: .45rem .95rem;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 1.3rem;
}
.ih-h1,
.ih-hero h1,
.page-header h1,
.page-header-container h1 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  color: var(--txt-1);
}
.ih-subtitle,
.page-header p,
.page-header-container p {
  color: var(--txt-2);
  font-size: 1.08rem;
  max-width: 46rem;
  margin-top: 1.1rem;
}
.ih-hero .accent,
.accent {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--green) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Labels de section (monospace, comme la landing) ---------- */
.section-label,
.section-title-label {
  font-family: var(--font-mono) !important;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .mobile-menu, .mobile-link, .mobile-cta, .main-nav .nav-link::after { transition: none; }
}