/* ============================================================
   TechMedias Blog — HEADER + FOOTER identiques au site vitrine
   Porté depuis deliverables/home_v16/assets/system.css (nav/marquee/footer).
   Le header/footer portent leur propre fond sombre → cohérent sur body clair.
   ============================================================ */

/* --- Tokens nécessaires (sous-ensemble du :root du site) --- */
.nav, .marquee-bar, .site-foot, .foot-bottom {
  --indigo-300:#a3a6ff; --indigo-400:#818cf8; --indigo-600:#4f46e5;
  --violet-400:#a78bfa; --violet-500:#8b5cf6; --violet-600:#7c3aed;
  --pink-400:#f472b6; --pink-500:#ec4899; --cyan-400:#5cc8ff;
  --slate-300:#d1d5db; --slate-400:#9ca3af; --text-tertiary:#7E8694;
  --white-05:rgba(255,255,255,0.05); --white-08:rgba(255,255,255,0.08); --white-10:rgba(255,255,255,0.10);
  --font-display:'Space Grotesk', system-ui, sans-serif;
  --ease-out:cubic-bezier(0.16,1,0.3,1); --ease-spring:cubic-bezier(0.34,1.56,0.64,1); --ease-soft:cubic-bezier(0.4,0,0.2,1);
  --r-md:0.75rem; --r-xl:1.5rem;
}

/* Réserve l'espace de la nav fixe (64px) ; décalage si admin-bar WP */
body { padding-top: 64px; }
.admin-bar .nav { top: 32px; }
@media screen and (max-width:782px){ .admin-bar .nav { top: 46px; } }

/* ============================================================
   NAV
   ============================================================ */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; background: rgba(11,13,26,0.6); backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%); border-bottom: 1px solid var(--white-05); transition: background 0.4s var(--ease-out); font-family: var(--font-display); }
.nav.is-scrolled { background: rgba(11,13,26,0.92); }
.nav-inner { max-width: 1440px; margin: 0 auto; padding: 0.5rem 2rem; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.nav .brand { position: relative; z-index: 1; flex-shrink: 0; width: 130px; height: 48px; display: block; }
.nav .brand-logo { position: absolute; left: 0; top: 2px; height: 78px; width: auto; max-width: none; display: block; transition: height 0.4s var(--ease-out), top 0.4s var(--ease-out); }
.nav.is-scrolled .brand-logo { height: 54px; top: 0; }

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-link { font-size: 0.9rem; font-weight: 500; color: var(--slate-300); position: relative; padding: 0.4rem 0; transition: color 0.3s var(--ease-soft); background: none; border: none; font-family: inherit; cursor: pointer; display: inline-flex; align-items: center; gap: 0.25rem; text-decoration: none; }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 1.5px; background: linear-gradient(90deg, var(--indigo-400), var(--violet-400)); transform: scaleX(0); transform-origin: left; transition: transform 0.4s var(--ease-out); }
.nav-link:hover { color: #fff; }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); }

/* --- Dropdown Piliers --- */
.nav-link-group { position: relative; }
.nav-link-trigger .nav-arrow { transition: transform 0.3s var(--ease-out); color: var(--slate-400); }
.nav-link-group.is-open .nav-link-trigger { color: #fff; }
.nav-link-group.is-open .nav-link-trigger .nav-arrow { transform: rotate(180deg); color: var(--violet-400); }
.nav-dropdown { position: absolute; top: calc(100% + 0.85rem); left: -1rem; min-width: 360px; background: rgba(11,13,26,0.96); border: 1px solid var(--white-08); border-radius: var(--r-xl); backdrop-filter: blur(24px) saturate(140%); -webkit-backdrop-filter: blur(24px) saturate(140%); box-shadow: 0 24px 60px -16px rgba(0,0,0,0.6); padding: 0.65rem; opacity: 0; visibility: hidden; transform: translateY(-12px); transition: opacity 0.25s var(--ease-out), transform 0.3s var(--ease-out), visibility 0s linear 0.3s; z-index: 60; }
.nav-link-group.is-open .nav-dropdown { opacity: 1; visibility: visible; transform: translateY(0); transition: opacity 0.25s var(--ease-out), transform 0.3s var(--ease-out), visibility 0s linear 0s; }
.nav-dropdown::before { content: ''; position: absolute; top: -6px; left: 2.5rem; width: 12px; height: 12px; background: rgba(11,13,26,0.96); border-top: 1px solid var(--white-08); border-left: 1px solid var(--white-08); transform: rotate(45deg); }
.dropdown-item { display: flex; align-items: flex-start; gap: 0.9rem; padding: 0.85rem 0.95rem; border-radius: var(--r-md); transition: background 0.25s var(--ease-out); color: inherit; text-decoration: none; }
.dropdown-item:hover, .dropdown-item:focus-visible { background: var(--white-05); outline: none; }
.dropdown-icon { flex-shrink: 0; width: 36px; height: 36px; border-radius: 9px; display: flex; align-items: center; justify-content: center; background: rgba(139,92,246,0.14); border: 1px solid rgba(139,92,246,0.28); color: var(--violet-400); transition: transform 0.3s var(--ease-spring); }
.dropdown-item:nth-child(2) .dropdown-icon { background: rgba(236,72,153,0.14); border-color: rgba(236,72,153,0.28); color: var(--pink-400); }
.dropdown-item:nth-child(3) .dropdown-icon { background: rgba(92,200,255,0.14); border-color: rgba(92,200,255,0.28); color: var(--cyan-400); }
.dropdown-item:nth-child(4) .dropdown-icon { background: rgba(139,92,246,0.14); border-color: rgba(139,92,246,0.28); color: var(--violet-400); }
.dropdown-item:hover .dropdown-icon { transform: scale(1.08) rotate(-3deg); }
.dropdown-text { min-width: 0; }
.dropdown-title { font-family: var(--font-display); font-size: 0.92rem; font-weight: 600; color: #fff; letter-spacing: -0.01em; line-height: 1.25; }
.dropdown-desc { font-size: 0.78rem; color: var(--slate-400); line-height: 1.4; margin-top: 0.2rem; }

/* --- CTA / boutons --- */
.nav-cta { display: flex; gap: 1rem; align-items: center; }
.btn-ghost { font-size: 0.85rem; font-weight: 500; color: var(--slate-300); padding: 0.65rem 1rem; border-radius: var(--r-md); transition: color 0.25s var(--ease-soft); text-decoration: none; white-space: nowrap; }
.btn-ghost:hover { color: #fff; }
.btn-primary { position: relative; overflow: hidden; display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.78rem 1.5rem; background: linear-gradient(120deg, var(--indigo-600) 0%, var(--violet-600) 55%, var(--violet-600) 82%, var(--pink-500) 100%); background-size: 240% 240%; background-position: 0% 50%; border-radius: var(--r-md); font-weight: 500; font-size: 0.9rem; color: #fff; text-decoration: none; white-space: nowrap; box-shadow: 0 8px 24px -8px rgba(99,102,241,0.5), inset 0 1px 0 rgba(255,255,255,0.2); transition: transform 0.3s var(--ease-spring), box-shadow 0.3s var(--ease-out), background-position 0.6s var(--ease-out); }
.btn-primary:hover { transform: translateY(-2px); background-position: 100% 50%; box-shadow: 0 14px 36px -8px rgba(99,102,241,0.7), inset 0 1px 0 rgba(255,255,255,0.3); }
.btn-primary::before { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.4) 50%, transparent 70%); transform: translateX(-100%); transition: transform 0.7s var(--ease-out); }
.btn-primary:hover::before { transform: translateX(100%); }

/* --- Burger (mobile) --- */
.nav-burger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 42px; height: 42px; padding: 9px; background: none; border: none; cursor: pointer; }
.nav-burger span { display: block; height: 2px; width: 100%; background: var(--slate-300); border-radius: 2px; transition: transform 0.3s var(--ease-out), opacity 0.2s; }
.nav.nav-open .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.nav-open .nav-burger span:nth-child(2) { opacity: 0; }
.nav.nav-open .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   MARQUEE
   ============================================================ */
.marquee-bar { width: 100vw; margin-left: calc(50% - 50vw); padding: 0.7rem 0; border-bottom: 1px solid var(--white-05); overflow: hidden; background: rgba(11,13,26,0.4); position: relative; z-index: 49;
  --logo-offset: max(0px, (100vw - 1440px) / 2);
  -webkit-mask-image: linear-gradient(90deg, transparent 0, transparent calc(205px + var(--logo-offset)), #000 calc(290px + var(--logo-offset)));
          mask-image: linear-gradient(90deg, transparent 0, transparent calc(205px + var(--logo-offset)), #000 calc(290px + var(--logo-offset))); }
.marquee-track { display: flex; gap: 3rem; white-space: nowrap; animation: marquee-scroll 28s linear infinite; font-family: var(--font-display); font-size: 0.78rem; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--slate-400); padding-left: 2rem; }
.marquee-track > span { display: inline-flex; align-items: center; gap: 1.5rem; transition: color 0.4s var(--ease-out); }
.marquee-track > span:hover { color: var(--indigo-300); }
.marquee-track > span::after { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--pink-400); display: inline-block; }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============================================================
   FOOTER (pleine largeur, contenu centré max 1440)
   ============================================================ */
footer.site-foot { width: 100vw; margin-left: calc(50% - 50vw); border-top: 1px solid var(--white-05); background: rgba(11,13,26,0.96); }
footer.site-foot { padding: 3rem 2rem 2.5rem; display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 3rem; font-size: 0.85rem; color: var(--text-tertiary); font-family: var(--font-display); }
/* recentre la grille interne à 1440 dans la bande pleine largeur */
footer.site-foot { max-width: none; }
footer.site-foot > * { max-width: 1440px; }
.site-foot .footer-brand-logo { height: 56px; width: auto; max-width: none; display: block; }
.foot-col h4 { font-family: var(--font-display); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--slate-300); margin-bottom: 1.25rem; }
.foot-col ul { list-style: none; margin: 0; padding: 0; }
.foot-col li { margin-bottom: 0.65rem; }
.foot-col a { color: var(--text-tertiary); text-decoration: none; transition: color 0.3s; }
.foot-col a:hover { color: #fff; }
.foot-tagline { margin-top: 1rem; color: var(--text-tertiary); font-size: 0.85rem; max-width: 30ch; line-height: 1.5; }
.foot-bottom { width: 100vw; margin-left: calc(50% - 50vw); padding: 1.5rem 2rem; border-top: 1px solid var(--white-05); background: rgba(11,13,26,0.96); display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--text-tertiary); font-family: var(--font-display); }

/* Grille footer centrée (la bande est pleine largeur, le contenu reste lisible) */
@media (min-width: 1025px) {
  footer.site-foot { grid-template-columns: 1.2fr 1fr 1fr 1fr; max-width: 1440px; margin-left: auto; margin-right: auto; width: auto; }
  .foot-bottom { max-width: 1440px; margin-left: auto; margin-right: auto; width: auto; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .nav-burger { display: flex; }
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0.25rem; background: rgba(11,13,26,0.98); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px); border-bottom: 1px solid var(--white-08); padding: 1rem 1.5rem 1.5rem; box-shadow: 0 24px 50px -20px rgba(0,0,0,0.7); }
  .nav.nav-open .nav-links { display: flex; }
  .nav-link { padding: 0.7rem 0; }
  /* Dropdown en accordéon plein largeur */
  .nav-dropdown { position: static; min-width: 0; width: 100%; margin-top: 0.4rem; box-shadow: none; transform: none; }
  .nav-link-group.is-open .nav-dropdown { transform: none; }
  .nav-dropdown::before { display: none; }
  .nav-cta { display: none; }
  footer.site-foot { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-inner { padding: 0.6rem 1rem; }
  footer.site-foot { grid-template-columns: 1fr; gap: 2rem; padding: 2rem 1.25rem; }
  .foot-bottom { padding: 1.25rem; flex-direction: column; gap: 0.75rem; }
  .marquee-bar { -webkit-mask-image: none; mask-image: none; }
}