/* ========================================================================
   Ombra : thème sobre, discret, "un abri numérique, pas une vitrine".
   Fond graphite profond, halo unique et calme, aucune imagerie politique.
   Contrastes AA partout, tailles confortables, prefers-reduced-motion respecté.
   ======================================================================== */

:root {
  --void: #12151a;
  --void-deep: #0b0d10;
  --panel: #1b1f26;
  --panel-line: #2a2f38;
  --mist: #e7ebf0;
  --mist-soft: #a7b0bc;
  --glow: #5fd0c0;
  --glow-deep: #3a9b8f;
  --glow-ink: #0d2f2b; /* variante foncée du halo, utilisée en texte sur fond clair uniquement */
  --warning: #e0a85f;

  --font-display: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "General Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius: 14px;
  --max: 1140px;
  --shadow-soft: 0 18px 40px -20px rgba(0, 0, 0, 0.6);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  background: var(--void);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  color: var(--mist);
  margin: 0;
}

p { margin: 0 0 1em; color: var(--mist-soft); }
p:last-child { margin-bottom: 0; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--glow);
  outline-offset: 3px;
  border-radius: 4px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--glow);
  color: var(--void-deep);
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- Topbar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(18, 21, 26, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--panel-line);
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--mist);
}
.wordmark-glyph { width: 30px; height: 30px; color: var(--glow); }

.topnav { display: flex; align-items: center; gap: 1.5rem; }

.topnav-links {
  display: flex;
  gap: 1.75rem;
  font-size: 0.95rem;
}
.topnav-links a { text-decoration: none; color: var(--mist-soft); }
.topnav-links a:hover { color: var(--mist); }

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--mist);
}
.menu-toggle-icon { width: 40px; height: 40px; }
.menu-toggle-icon circle { fill: var(--panel); stroke: var(--panel-line); }
.menu-toggle-burger path, .menu-toggle-cross path {
  stroke: var(--mist); stroke-width: 2; stroke-linecap: round; fill: none;
}
.menu-toggle-cross { display: none; }
.menu-toggle[aria-expanded="true"] .menu-toggle-burger { display: none; }
.menu-toggle[aria-expanded="true"] .menu-toggle-cross { display: block; }

@media (max-width: 720px) {
  .menu-toggle { display: block; }
  .topnav-links {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    background: var(--panel);
    padding: 1.5rem clamp(1.25rem, 4vw, 3rem);
    gap: 1.1rem;
    border-bottom: 1px solid var(--panel-line);
    display: none;
  }
  .topnav-links.is-open { display: flex; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: min(78vh, 640px);
  padding: 4rem clamp(1.25rem, 4vw, 3rem);
  overflow: hidden;
  text-align: center;
}

.hero-rings {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.hero-rings .ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--glow-deep);
  opacity: 0.35;
}
.ring-1 { width: 260px; height: 260px; }
.ring-2 { width: 420px; height: 420px; opacity: 0.22; }
.ring-3 { width: 600px; height: 600px; opacity: 0.12; }
.ring.core {
  width: 90px; height: 90px;
  background: radial-gradient(circle, var(--glow) 0%, transparent 70%);
  opacity: 0.5;
  border: none;
  filter: blur(4px);
  animation: pulse 6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.15); opacity: 0.6; }
}

.hero-content { position: relative; max-width: 720px; }

.eyebrow {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--glow);
  margin-bottom: 1rem;
}
.hero h1 { font-size: clamp(3rem, 8vw, 4.5rem); }
.baseline {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--mist);
  margin: 0.75rem 0 1.5rem;
}
.hero-text { font-size: 1.1rem; max-width: 60ch; margin-left: auto; margin-right: auto; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.98rem;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn-primary { background: var(--glow); color: var(--void-deep); }
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost { border: 1px solid var(--panel-line); color: var(--mist); }
.btn-ghost:hover { border-color: var(--glow); }

/* ---------- Sections communes ---------- */

main > section {
  padding: clamp(3rem, 8vw, 6rem) clamp(1.25rem, 4vw, 3rem);
  max-width: var(--max);
  margin: 0 auto;
}

.section-head { max-width: 60ch; margin-bottom: 2.5rem; }
.section-kicker {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--glow);
  margin-bottom: 0.6rem;
}
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.4rem); }

/* ---------- Constat ---------- */

.constat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.constat-card {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  padding: 2rem;
}
.constat-card h3 { font-size: 1.2rem; margin-bottom: 0.75rem; color: var(--mist); }

/* ---------- Offre ---------- */

.offer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.offer-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-soft);
}
.offer-index {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--glow);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.offer-card h3 { font-size: 1.35rem; margin-bottom: 0.75rem; }
.offer-note {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--panel-line);
  font-size: 0.92rem;
}

/* ---------- Contact ---------- */

.contact {
  background: var(--void-deep);
  border-radius: var(--radius);
}
.contact-inner { max-width: var(--max); margin: 0 auto; }
.section-head--dark .section-kicker { color: var(--glow); }

.contact-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-warning {
  color: var(--warning);
  font-weight: 600;
  border-left: 3px solid var(--warning);
  padding-left: 1rem;
}

.contact-card {
  background: var(--panel);
  border: 1px solid var(--panel-line);
  border-radius: var(--radius);
  padding: 2rem;
}
.contact-card h3 { font-size: 1.2rem; margin-bottom: 1.1rem; }
.btn-block { display: flex; width: 100%; justify-content: center; margin-bottom: 1rem; }
.btn-icon { width: 20px; height: 20px; flex-shrink: 0; }
.contact-username { font-size: 0.95rem; color: var(--mist-soft); margin: 0; }
.contact-username strong { color: var(--mist); }

/* ---------- Footer ---------- */

.site-footer {
  text-align: center;
  padding: 2.5rem 1.25rem 3rem;
  color: var(--mist-soft);
  font-size: 0.9rem;
  border-top: 1px solid var(--panel-line);
}
.site-footer a { color: var(--glow); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }

/* ---------- Interactions : hover lift + accents ---------- */

.constat-card,
.offer-card,
.contact-card {
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.constat-card:hover,
.offer-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px -18px rgba(0, 0, 0, 0.75),
              inset 3px 0 0 var(--glow);
}

.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px -14px rgba(0, 0, 0, 0.6),
              inset 3px 0 0 var(--glow);
}

/* ---------- Stagger reveal (piloté par IntersectionObserver inline) ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.45s ease, transform 0.45s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.constat-grid .reveal:nth-child(2) { transition-delay: 0.09s; }
.constat-grid .reveal:nth-child(3) { transition-delay: 0.18s; }
.offer-grid   .reveal:nth-child(2) { transition-delay: 0.11s; }