/* ╔════════════════════════════════════════════════════════╗
   ║  nav.css — Navigation & footer partagés               ║
   ║  Chargé sur toutes les pages sauf home.php            ║
   ╚════════════════════════════════════════════════════════╝ */

/* ── Tokens ──────────────────────────────────────────────── */
:root {
  --midnight:    #030D1F;
  --deep:        #0A1628;
  --purple:      #7C3AED;
  --purple-soft: #A78BFA;
  --blue:        #3B82F6;
  --cyan:        #06B6D4;
  --cyan-bright: #22D3EE;
  --white:       #FFFFFF;
  --off-white:   #F0F6FF;
  --text-dim:    #94A3B8;
  --text-faint:  #475569;
  --border:      rgba(255,255,255,.08);
  --glass:       rgba(10,22,40,.72);
  --grad:        linear-gradient(135deg,#7C3AED 0%,#3B82F6 52%,#06B6D4 100%);
}

/* ── Espace sous la nav fixe ─────────────────────────────── */
body { padding-top: 68px; }

/* ── Conteneur partagé ───────────────────────────────────── */
.h-container {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ═══════════════════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════════════════ */
.home-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 68px;
  display: flex;
  align-items: center;
  overflow: visible;
  transition: background .45s ease, backdrop-filter .45s ease, box-shadow .45s ease;
}
.home-nav.is-solid {
  background: var(--glass);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
/* Gradient sombre pour lisibilité quand le fond est transparent */
.home-nav::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 140px;
  background: linear-gradient(to bottom, rgba(3,13,31,.65) 0%, rgba(3,13,31,.15) 55%, transparent 100%);
  pointer-events: none;
  z-index: -1;
  transition: opacity .45s ease;
}
.home-nav.is-solid::before { opacity: 0; }
.home-nav .h-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  overflow: visible;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-decoration: none;
  letter-spacing: -.02em;
  flex-shrink: 0;
  text-shadow: 0 1px 6px rgba(0,0,0,.35);
  transform: translateY(18px);
  transition: font-size .4s ease, gap .4s ease,
              transform .45s cubic-bezier(.34,1.56,.64,1);
}
.home-nav.is-solid .nav-brand {
  font-size: 1.05rem;
  gap: .65rem;
  transform: translateY(0);
}
.nav-logo-img {
  width: 52px; height: 52px;
  border-radius: 10px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 10px rgba(124,58,237,.55));
  transition: width .4s ease, height .4s ease, border-radius .4s ease, filter .3s ease;
}
.home-nav.is-solid .nav-logo-img {
  width: 32px; height: 32px;
  border-radius: 8px;
}
.nav-brand:hover .nav-logo-img {
  transform: rotate(12deg) scale(1.1);
  filter: drop-shadow(0 0 14px rgba(6,182,212,.65));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: .15rem;
  list-style: none;
}
.nav-links a {
  font-size: .875rem;
  font-weight: 500;
  color: rgba(255,255,255,.65);
  text-decoration: none;
  padding: .45rem .85rem;
  border-radius: 9px;
  transition: color .2s, background .2s;
  text-shadow: 0 1px 4px rgba(0,0,0,.3);
}
.nav-links a:hover,
.nav-links a.is-active {
  color: #fff;
  background: rgba(255,255,255,.09);
}

.nav-cta-btn {
  font-size: .85rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  background: var(--grad);
  background-size: 200% 200%;
  animation: nav-grad-shift 6s ease infinite;
  padding: .5rem 1.25rem;
  border-radius: 10px;
  flex-shrink: 0;
  box-shadow: 0 2px 16px rgba(124,58,237,.38);
  transition: transform .15s, box-shadow .2s;
}
.nav-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 28px rgba(124,58,237,.55);
}

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

.nav-mobile {
  display: none;
  position: absolute;
  top: 68px; left: 0; right: 0;
  background: var(--midnight);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem 1.75rem;
  flex-direction: column;
  gap: 0;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}
.nav-mobile.is-open { display: flex; }
.nav-mobile a {
  font-size: .95rem;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  text-decoration: none;
  padding: .85rem .25rem;
  border-bottom: 1px solid var(--border);
  transition: color .2s;
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: #fff; }

/* Couleur du texte nav sur fond clair (pages content) */
.home-nav:not(.is-solid) .nav-brand,
.home-nav:not(.is-solid) .nav-links a {
  text-shadow: 0 1px 8px rgba(0,0,0,.5);
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════ */
.home-footer {
  background: var(--midnight);
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  font-family: inherit;
}
.home-footer .h-container {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem 3rem;
  align-items: start;
}
.footer-brand-col { display: flex; flex-direction: column; gap: .75rem; }
.footer-logo-row  { display: flex; align-items: center; gap: .6rem; }
.footer-logo-img  { width: 28px; height: 28px; border-radius: 6px; opacity: .9; }
.footer-brand {
  font-size: .95rem;
  font-weight: 700;
  color: rgba(255,255,255,.75);
}
.footer-tagline {
  font-size: .8rem;
  color: rgba(255,255,255,.32);
  max-width: 320px;
  line-height: 1.6;
}
.footer-nav-cols { display: flex; gap: 3rem; }
.footer-nav-col h4 {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.28);
  margin-bottom: .85rem;
}
.footer-nav-col a {
  display: block;
  font-size: .8rem;
  color: rgba(255,255,255,.45);
  padding: .3rem 0;
  transition: color .2s;
}
.footer-nav-col a:hover { color: rgba(255,255,255,.85); }
.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: .5rem;
}
.footer-copy { font-size: .72rem; color: rgba(255,255,255,.2); }
.footer-prometheus {
  font-size: .72rem;
  color: rgba(255,255,255,.3);
  transition: color .2s;
}
.footer-prometheus:hover { color: rgba(255,255,255,.65); }
.footer-prometheus span {
  background: var(--grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* ═══════════════════════════════════════════════════════════
   KEYFRAMES
═══════════════════════════════════════════════════════════ */
@keyframes nav-grad-shift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .nav-links, .nav-cta-btn { display: none; }
  .nav-hamburger            { display: flex; }
  .home-footer .h-container { grid-template-columns: 1fr; }
  .footer-nav-cols          { flex-wrap: wrap; gap: 1.5rem 2.5rem; }
  .footer-bottom            { flex-direction: column; align-items: flex-start; }
}