:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #152133;
  --muted: #5f6b7d;
  --primary: #1f4d7a;
  --primary-dark: #153752;
  --accent: #5c8db9;
  --accent-soft: #eaf2f9;
  --border: #dfe6ee;
  --shadow: 0 18px 45px rgba(21, 37, 59, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(249, 251, 253, 0.96), rgba(240, 246, 251, 0.96)),
    url('../images/architectural-bg.svg') center/cover fixed;
  line-height: 1.65;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(21, 37, 59, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 37, 59, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.2), transparent 70%);
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; }
.container {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(223, 230, 238, 0.9);
  box-shadow: 0 4px 20px rgba(21, 37, 59, 0.04);
}
.nav-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center; /* Centré par défaut pour toutes les pages */
  padding: 1rem 0;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
  color: var(--primary-dark);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
}
.site-nav {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--muted);
  font-weight: 600;
  transition: color 0.2s ease;
}
.site-nav a.active,
.site-nav a:hover { color: var(--primary); }
.nav-toggle { display: none; }

.hero {
  padding: 5.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.hero-banner {
  padding: 6.5rem 0 4.8rem;
  min-height: 720px;
  display: flex;
  align-items: center;
}
.hero-backdrop {
  position: absolute;
  inset: -10% 0 0 0;
  background:
    linear-gradient(120deg, rgba(9, 24, 39, 0.96) 0%, rgba(21, 55, 82, 0.74) 48%, rgba(92, 141, 185, 0.82) 100%),
    url('../images/architectural-bg.svg') center/cover;
  transform: scale(1.08);
  will-change: transform;
  transition: transform 0.2s ease-out;
}
.hero-banner.is-parallax .hero-backdrop {
  transform: scale(1.12) translate3d(0, calc(var(--parallax, 0px) * 0.08), 0);
}
.hero-backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(255,255,255,0.2), transparent 28%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-copy h1,
.hero-copy p,
.hero-copy .hero-actions { position: relative; z-index: 1; }
.hero-copy h1 {
  color: white;
  font-size: clamp(2.2rem, 3.4vw, 3.7rem);
  max-width: 700px;
  text-shadow: 0 10px 35px rgba(0,0,0,0.2);
}
.hero-copy .eyebrow { color: #d9e8f3; }
.hero-text {
  color: rgba(255,255,255,0.9);
  font-size: 1.06rem;
  max-width: 640px;
}
.hero-actions { margin-top: 1.8rem; }
.hero-visual {
  display: grid;
  gap: 1rem;
  align-items: center;
}
.logo-orbit {
  width: 148px;
  height: 148px;
  border-radius: 50%;
  position: relative;
  display: grid;
  place-items: center;
  margin-left: auto;
  animation: floatLogo 5s ease-in-out infinite;
}
.logo-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.35);
  border-top-color: white;
  border-right-color: rgba(255,255,255,0.6);
  animation: spin 8s linear infinite;
}
.logo-core {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: rgba(255,255,255,0.95);
  color: var(--primary-dark);
  display: grid;
  place-items: center;
  font-size: 2rem;
  font-weight: 800;
  box-shadow: 0 14px 35px rgba(0,0,0,0.18);
}
.luxury-card {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.6rem;
}
h1, h2, h3 { line-height: 1.16; margin-top: 0; }
h1 { font-size: clamp(2.1rem, 3.2vw, 3.3rem); margin: 0 0 1rem; }
.hero-text { font-size: 1.05rem; color: var(--muted); max-width: 680px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.6rem; }
.btn {
  display: inline-block;
  padding: 0.95rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(31, 77, 122, 0.16); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: white;
}
.btn-secondary {
  background: rgba(255,255,255,0.86);
  color: var(--primary);
  border: 1px solid var(--border);
}

.hero-visual {
  display: grid;
  gap: 1rem;
}
.hero-card,
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.hero-card {
  padding: 1.6rem;
  background: linear-gradient(145deg, rgba(255,255,255,0.96), rgba(232, 242, 248, 0.9));
  border: 1px solid rgba(223, 230, 238, 0.95);
}
.hero-card ul { padding-left: 1rem; color: var(--muted); }
.hero-image-card {
  min-height: 220px;
  padding: 1.6rem;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.18);
  background:
    linear-gradient(135deg, rgba(21, 55, 82, 0.9), rgba(92, 141, 185, 0.8)),
    url('https://images.unsplash.com/photo-1511818966892-d7d671e672a2?auto=format&fit=crop&w=900&q=80') center/cover;
  box-shadow: var(--shadow);
  color: white;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  position: relative;
}
.hero-image-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(7, 20, 32, 0.16) 100%);
}
.hero-image-card > * { position: relative; z-index: 1; }
.hero-image-card h3 { font-size: 1.35rem; margin-bottom: 0; color: white; }
.internal-hero-card { min-height: 220px; }
.software-hero-card { background: linear-gradient(135deg, rgba(21, 55, 82, 0.92), rgba(92, 141, 185, 0.78)), url('https://images.unsplash.com/photo-1497366754035-f200968a6e72?auto=format&fit=crop&w=900&q=80') center/cover; }
.method-hero-card { background: linear-gradient(135deg, rgba(21, 55, 82, 0.92), rgba(92, 141, 185, 0.78)), url('https://images.unsplash.com/photo-1504384308090-c894fdcc538d?auto=format&fit=crop&w=900&q=80') center/cover; }
.formation-hero-card { background: linear-gradient(135deg, rgba(21, 55, 82, 0.92), rgba(92, 141, 185, 0.78)), url('https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=900&q=80') center/cover; }
.network-hero-card { background: linear-gradient(135deg, rgba(21, 55, 82, 0.92), rgba(92, 141, 185, 0.78)), url('https://images.unsplash.com/photo-1522202176988-66273c2fd55f?auto=format&fit=crop&w=900&q=80') center/cover; }

.section { padding: 1.2rem 0 3.2rem; }
.section-title { margin-bottom: 1.4rem; }
.section-title h2 { font-size: clamp(1.4rem, 2vw, 1.8rem); }
.feature-section { padding-top: 0; }
.feature-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: -0.3rem;
}
.feature-item {
  background: rgba(255,255,255,0.86);
  border: 1px solid rgba(223, 230, 238, 0.9);
  border-radius: 16px;
  padding: 1.1rem 1.15rem;
  box-shadow: 0 10px 24px rgba(21, 37, 59, 0.052);
}
.feature-item strong { display: block; margin-bottom: 0.35rem; color: var(--primary-dark); }
.feature-item span { color: var(--muted); font-size: 0.95rem; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}
.card {
  padding: 1.4rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(223, 230, 238, 0.95);
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--primary) 100%);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 42px rgba(21, 37, 59, 0.12);
}
.card h3 { margin-bottom: 0.45rem; }
.card p { color: var(--muted); margin-bottom: 0.9rem; }
.card a { font-weight: 700; }

.page-hero {
  padding: 3.6rem 0 1.6rem;
}
.page-hero-architectural {
  position: relative;
  padding: 4rem 0 2rem;
}
.page-hero-architectural::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.8), rgba(255,255,255,0.52));
  border-radius: 0 0 28px 28px;
  z-index: -1;
}
.page-hero p { color: var(--muted); max-width: 740px; }

.site-footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1.4rem;
}
.footer-links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@keyframes floatLogo {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .feature-strip { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .brand span { display: none; }
}

@media (max-width: 780px) {
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    gap: 0.25rem;
    background: transparent;
    border: 0;
    cursor: pointer;
  }
  .nav-toggle span { width: 24px; height: 2px; background: var(--text); }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 1rem;
    left: 1rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1rem;
    flex-direction: column;
    box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .cards-grid { grid-template-columns: 1fr; }
  .footer-content { flex-direction: column; align-items: flex-start; }
}

/* --- TRANSITIONS DE PAGE CINÉMATIQUES --- */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  background: #ffffff;
  z-index: 999999; /* On force le z-index très haut pour passer au-dessus de tout sur index.html */
  pointer-events: none;
  opacity: 0;
  /* La transition est maintenant gérée dynamiquement par le JS */
  transition: opacity 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.page-transition-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

/* Fondu d'entrée en douceur pour chaque page */
body {
  animation: fadeInPage 0.8s cubic-bezier(0.25, 1, 0.5, 1) both;
}

@keyframes fadeInPage {
  from {
    opacity: 0;
    background-color: #ffffff;
  }
  to {
    opacity: 1;
  }
}

/* --- SÉLECTEUR DE LANGUE GLOBAL (Placé à droite dans la bannière) --- */
.lang-switcher {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  z-index: 15;
}

.lang-switcher a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.lang-switcher a:hover,
.lang-switcher a.active {
  color: var(--primary);
}

.lang-switcher span {
  color: var(--border);
  user-select: none;
}

@media (max-width: 780px) {
  .nav-wrap {
    justify-content: space-between;
  }
  .lang-switcher {
    position: relative;
    top: auto;
    right: auto;
    transform: none;
  }
}

/* --- BADGES TECHNIQUES [SOON / BIENTÔT] --- */
.panel-badge {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 5;
}

/* --- LIENS DE NAVIGATION DÉSACTIVÉS --- */
.nav-disabled,
a.nav-disabled {
  pointer-events: none !important; /* Bloque le clic */
  opacity: 0.45 !important;        /* Effet grisé */
  cursor: not-allowed !important;   /* Curseur d'interdiction */
  text-decoration: none !important;
}

.panel:hover .panel-badge {
  color: var(--primary);
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(21, 37, 59, 0.03);
}

@media (max-width: 992px) {
  .panel-badge {
    position: relative;
    top: 0;
    right: 0;
    margin-left: auto; /* Aligné à droite sur mobile dans le flux horizontal */
    background: #ffffff;
  }
}

/* --- LIENS PARTENAIRES & AFFILIATION HARDWARE --- */
.partner-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.partner-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.partner-link:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(21, 37, 59, 0.12);
}

/* --- GRILLE A 3 COLONNES PAR CATEGORIE (MIN / REC / HIGH) --- */
.config-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
}

.tier-col {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.8rem;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.tier-col:hover {
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(21, 37, 59, 0.05);
}

.tier-label {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}

.tier-min .tier-label {
  color: #64748b;
}

.tier-rec .tier-label {
  color: var(--primary);
}

.tier-high .tier-label {
  color: #1d4ed8;
}

.tier-spec {
  font-size: 0.8rem;
  color: var(--text-muted, #475569);
  margin-bottom: 0.8rem;
  line-height: 1.4;
  flex-grow: 1;
}

@media (max-width: 850px) {
  .config-tiers {
    grid-template-columns: 1fr;
  }
}