/* ============================================
   PRAXIS — Feuille de style commune
   Identité : casaque chirurgicale + ivoire éthéré
   ============================================ */

:root {
  --white: #FEFEFC;
  --white-pure: #FFFFFE;
  --white-soft: #F8F6EE;
  --casaque-bright: #BCD2DA;
  --casaque-light: #95B4BE;
  --casaque: #7B9DAA;
  --casaque-mid: #5C808E;
  --casaque-deep: #44646F;
  --casaque-dark: #2D4A55;
  --casaque-night: #1B3540;
  --casaque-void: #0F2530;
  --casaque-pale: rgba(92, 128, 142, 0.12);
  --line: rgba(92, 128, 142, 0.25);
  --ink: #1B3540;
  --ink-soft: #44646F;
  --ink-muted: #889AA1;
  --display: 'Recoleta', 'Cooper Std', Georgia, serif;
  --font: 'Switzer', 'Helvetica Neue', sans-serif;
  --mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  letter-spacing: -0.005em;
  position: relative;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(ellipse 100% 80% at 25% 15%, rgba(255, 255, 254, 0.8) 0%, transparent 65%),
    radial-gradient(ellipse 80% 60% at 80% 30%, rgba(92, 128, 142, 0.04) 0%, transparent 75%),
    radial-gradient(ellipse 110% 90% at 70% 90%, rgba(255, 255, 254, 0.6) 0%, transparent 70%);
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background-image:
    linear-gradient(rgba(92, 128, 142, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(92, 128, 142, 0.025) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.4) 0%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.4) 0%, transparent 80%);
}

/* TEXTURE TISSU CASAQUE */
.casaque-texture {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(ellipse 70% 90% at 22% 18%, rgba(255, 255, 255, 0.12) 0%, transparent 52%),
    radial-gradient(ellipse 55% 80% at 78% 12%, rgba(255, 255, 255, 0.09) 0%, transparent 55%),
    radial-gradient(ellipse 65% 75% at 88% 65%, rgba(255, 255, 255, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse 60% 85% at 35% 75%, rgba(0, 0, 0, 0.13) 0%, transparent 55%),
    radial-gradient(ellipse 50% 70% at 12% 55%, rgba(0, 0, 0, 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 75% 65% at 65% 92%, rgba(0, 0, 0, 0.12) 0%, transparent 55%),
    radial-gradient(ellipse 30% 40% at 50% 35%, rgba(255, 255, 255, 0.05) 0%, transparent 60%),
    radial-gradient(ellipse 25% 35% at 70% 50%, rgba(0, 0, 0, 0.05) 0%, transparent 60%);
}

.casaque-texture::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='400' height='400'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch' seed='5'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.4 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");
  background-size: 300px 300px;
  mix-blend-mode: overlay;
  opacity: 0.6;
}

/* NAVIGATION */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 32px;
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 32px;
  background: rgba(254, 254, 252, 0.7);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-bottom: 1px solid var(--line);
  transition: all 600ms ease;
}

.nav.on-blue {
  background: rgba(15, 37, 48, 0.7);
  border-bottom-color: rgba(188, 210, 218, 0.2);
}

.nav.on-blue .nav-logo,
.nav.on-blue .nav-status,
.nav.on-blue .nav-links a { color: var(--white); }

.nav.on-blue .nav-cta {
  background: var(--white);
  color: var(--casaque-night);
}

.nav-brand { display: flex; align-items: center; gap: 14px; }

.nav-logo {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--casaque-mid);
  text-decoration: none;
  transition: color 600ms ease;
}

.nav.on-blue .nav-logo { color: var(--casaque-bright); }

.nav-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.nav-status-dot {
  width: 6px;
  height: 6px;
  background: var(--casaque-mid);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--casaque-mid);
  animation: pulse-soft 2s ease-in-out infinite;
}

.nav.on-blue .nav-status-dot {
  background: var(--casaque-bright);
  box-shadow: 0 0 12px var(--casaque-bright);
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.9); }
}

.nav-links { display: flex; gap: 32px; list-style: none; justify-content: center; }

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color 500ms ease;
  position: relative;
}

.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--casaque-mid); }

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: var(--casaque-mid);
  transition: width 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-meta {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav.on-blue .nav-meta { color: rgba(254, 254, 252, 0.5); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 22px;
  background: var(--casaque-night);
  color: var(--white);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  border-radius: 4px;
  transition: background 400ms ease, color 400ms ease;
}

.nav-cta:hover { background: var(--casaque-dark); }

/* PAGE STRUCTURE */
.page { padding-top: 88px; position: relative; z-index: 3; }

.page-hero {
  padding: 100px 40px 80px;
  position: relative;
}

.page-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 4;
}

.page-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--casaque-mid);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.page-eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--casaque-mid), transparent);
}

.page-title {
  font-family: var(--display);
  font-size: clamp(56px, 8vw, 128px);
  font-weight: 800;
  font-style: italic;
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--casaque-mid);
  margin-bottom: 32px;
  max-width: 1100px;
}

.page-title .ink { color: var(--ink); }

.page-intro {
  font-family: var(--font);
  font-size: clamp(17px, 1.3vw, 20px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 760px;
}

.page-intro strong {
  font-weight: 700;
  color: var(--casaque-mid);
}

/* SECTIONS */
.section {
  padding: 80px 40px;
  position: relative;
}

.section.alt { background: var(--white-soft); }
.section.dark { background: var(--casaque-night); color: var(--white); overflow: hidden; }
.section.casaque { background: var(--casaque-mid); color: var(--white); overflow: hidden; }

.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 4;
}

.section-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--casaque-mid);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.section.dark .section-eyebrow,
.section.casaque .section-eyebrow {
  color: var(--casaque-bright);
}

.section-eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, currentColor, transparent);
}

.section-title {
  font-family: var(--display);
  font-size: clamp(36px, 4.5vw, 64px);
  font-weight: 700;
  font-style: italic;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 32px;
  max-width: 900px;
}

.section.dark .section-title,
.section.casaque .section-title { color: var(--white); }

.section-title .accent { color: var(--casaque-mid); }
.section.dark .section-title .accent,
.section.casaque .section-title .accent { color: var(--casaque-bright); }

.section-text {
  font-family: var(--font);
  font-size: clamp(16px, 1.2vw, 18px);
  font-weight: 400;
  line-height: 1.7;
  color: var(--ink-soft);
  max-width: 760px;
  margin-bottom: 24px;
}

.section-text:last-child { margin-bottom: 0; }
.section.dark .section-text,
.section.casaque .section-text { color: rgba(254, 254, 252, 0.85); }

.section-text strong {
  font-weight: 700;
  color: var(--casaque-mid);
}

.section.dark .section-text strong,
.section.casaque .section-text strong { color: var(--casaque-bright); }

/* CARDS */
.card {
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  transition: all 400ms cubic-bezier(0.22, 1, 0.36, 1);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--casaque-mid);
  box-shadow: 0 0 12px var(--casaque-mid);
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(92, 128, 142, 0.45);
  box-shadow: 0 8px 32px rgba(92, 128, 142, 0.08);
}

.card-num {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--casaque-mid);
  text-transform: uppercase;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.card-title {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 16px;
  line-height: 1.15;
}

.card-text {
  font-family: var(--font);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--ink-soft);
}

.card-on-casaque {
  background: rgba(254, 254, 252, 0.07);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(254, 254, 252, 0.18);
  color: var(--white);
}

.card-on-casaque::before {
  background: var(--casaque-bright);
  box-shadow: 0 0 12px var(--casaque-bright);
}

.card-on-casaque .card-num { color: var(--casaque-bright); border-bottom-color: rgba(254, 254, 252, 0.18); }
.card-on-casaque .card-title { color: var(--white); }
.card-on-casaque .card-text { color: rgba(254, 254, 252, 0.8); }

.card-on-casaque:hover {
  background: rgba(254, 254, 252, 0.10);
  border-color: rgba(254, 254, 252, 0.3);
}

/* BUTTONS */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 32px;
  background: var(--casaque-night);
  color: var(--white);
  text-decoration: none;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 600;
  border-radius: 4px;
  border: 1px solid var(--casaque-night);
  transition: background 400ms ease, color 400ms ease, border-color 400ms ease, gap 400ms cubic-bezier(0.22, 1, 0.36, 1);
}

.btn-primary:hover {
  background: var(--casaque-dark);
  border-color: var(--casaque-dark);
  gap: 18px;
}

.btn-primary svg {
  width: 16px;
  height: 16px;
  transition: transform 400ms cubic-bezier(0.22, 1, 0.36, 1);
}

.btn-primary:hover svg { transform: translateX(4px); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  padding: 18px 0;
  border-bottom: 2px solid var(--ink);
  transition: color 400ms ease, border-color 400ms ease;
}

.btn-secondary:hover {
  color: var(--casaque-mid);
  border-color: var(--casaque-mid);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--casaque-pale);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--casaque-deep);
}

.tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--casaque-mid);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--casaque-mid);
}

.checklist { list-style: none; padding: 0; margin: 0; }

.checklist li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 14px;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 16px;
  height: 1px;
  background: var(--casaque-mid);
}

.section.dark .checklist li,
.section.casaque .checklist li { color: rgba(254, 254, 252, 0.85); }

.section.dark .checklist li::before,
.section.casaque .checklist li::before { background: var(--casaque-bright); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* FOOTER */
.footer {
  width: 100%;
  padding: 56px 40px 32px;
  background: var(--white-soft);
  border-top: 1px solid var(--line);
  position: relative;
  z-index: 4;
}

.footer-inner {
  max-width: 1480px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand { display: flex; align-items: baseline; gap: 14px; }

.footer-logo {
  font-family: var(--display);
  font-size: 26px;
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--casaque-mid);
  text-decoration: none;
}

.footer-tag {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-links { display: flex; gap: 28px; flex-wrap: wrap; }

.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: color 400ms ease;
}

.footer-links a:hover { color: var(--ink); }

.footer-copy {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
}

/* WHATSAPP */
.whatsapp-widget {
  position: fixed;
  bottom: 28px;
  left: 28px;
  z-index: 95;
}

.whatsapp-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  background: var(--casaque-night);
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  border-radius: 100px;
  box-shadow: 0 6px 24px rgba(15, 37, 48, 0.2);
  transition: background 400ms ease, transform 400ms ease, box-shadow 400ms ease;
}

.whatsapp-btn:hover {
  background: var(--casaque-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(15, 37, 48, 0.3);
}

.whatsapp-btn svg { width: 18px; height: 18px; }

/* PROSE */
.prose { max-width: 800px; margin: 0 auto; }

.prose h2 {
  font-family: var(--display);
  font-size: clamp(28px, 3.2vw, 42px);
  font-weight: 700;
  font-style: italic;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--casaque-mid);
  margin: 48px 0 20px;
}

.prose h2:first-child { margin-top: 0; }

.prose h3 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 32px 0 12px;
}

.prose p {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.prose strong { font-weight: 700; color: var(--ink); }
.prose em { font-style: italic; color: var(--casaque-mid); }

.prose a {
  color: var(--casaque-mid);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 300ms ease;
}

.prose a:hover { color: var(--casaque-deep); }

/* ANIMATIONS — visible par défaut, animations progressives non-bloquantes */
.scroll-reveal { opacity: 1; transform: none; }

.scroll-reveal-delay-1, .scroll-reveal-delay-2, .scroll-reveal-delay-3 { transition-delay: 0; }

@keyframes hero-rise {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scialytic-pulse {
  0%, 100% { opacity: 0.95; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.04); }
}

/* ===== SPÉCIFIQUE HOME ===== */
.screen-hero {
  background: var(--white);
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px;
  position: relative;
  z-index: 3;
  overflow: hidden;
}

.scialytic-hero {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 2000px;
  height: 2000px;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 254, 1) 0%,
    rgba(255, 255, 254, 0.7) 12%,
    rgba(255, 255, 254, 0.45) 25%,
    rgba(188, 210, 218, 0.2) 40%,
    rgba(92, 128, 142, 0.1) 58%,
    transparent 78%
  );
  filter: blur(3px);
  animation: scialytic-pulse 8s ease-in-out infinite;
}

.hero-inner {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  position: relative;
  z-index: 4;
}

.hero-prelude {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 10px 20px;
  background: var(--casaque-mid);
  color: var(--white);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-radius: 4px;
  margin-bottom: 56px;
}

.hero-prelude::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--casaque-bright);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--casaque-bright);
}

.hero-brand {
  font-family: var(--display);
  font-size: clamp(96px, 15vw, 240px);
  font-weight: 800;
  font-style: italic;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--casaque-mid);
  margin-bottom: 24px;
}

.hero-brand-mark {
  font-size: 0.18em;
  vertical-align: super;
  font-weight: 500;
  font-style: normal;
  margin-left: 0.05em;
  color: var(--casaque-light);
}

.hero-generic {
  font-family: var(--mono);
  font-size: clamp(12px, 1vw, 14px);
  font-weight: 500;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--casaque-light);
  margin-bottom: 64px;
  padding-left: 4px;
}

.hero-title {
  font-family: var(--display);
  font-size: clamp(38px, 4.8vw, 72px);
  font-weight: 700;
  font-style: italic;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 48px;
  max-width: 900px;
}

.hero-title .accent { color: var(--casaque-mid); }

.hero-banner {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 22px 36px;
  background: var(--casaque-mid);
  color: var(--white);
  font-family: var(--display);
  font-size: clamp(18px, 1.8vw, 26px);
  font-weight: 700;
  font-style: italic;
  letter-spacing: -0.015em;
  border-radius: 6px;
  margin-bottom: 56px;
  width: fit-content;
  max-width: 100%;
  box-shadow: 0 12px 40px rgba(92, 128, 142, 0.25);
  position: relative;
  overflow: hidden;
}

.hero-banner > * { position: relative; z-index: 2; }

.hero-banner-divider {
  width: 1px;
  height: 24px;
  background: rgba(254, 254, 252, 0.4);
  flex-shrink: 0;
}

.hero-explainer {
  font-family: var(--font);
  font-size: clamp(17px, 1.35vw, 21px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
  max-width: 740px;
  margin-bottom: 48px;
}

.hero-explainer strong { font-weight: 700; color: var(--casaque-mid); }

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

/* ÉCRAN RÉASSURANCE */
.screen-reassurance {
  background: var(--casaque-mid);
  color: var(--white);
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px;
  position: relative;
  z-index: 3;
  overflow: hidden;
}

.screen-reassurance::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255, 255, 255, 0.18) 0%, transparent 60%);
}

/* ÉCRAN ENGAGEMENT */
.screen-engagement {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px;
  position: relative;
  z-index: 3;
  overflow: hidden;
}

.screen-engagement.alt { background: var(--white-soft); }

.screen-engagement::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 70%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(
    ellipse 60% 80% at 75% 50%,
    rgba(255, 255, 254, 0.7) 0%,
    rgba(188, 210, 218, 0.1) 50%,
    transparent 80%
  );
  filter: blur(1px);
}

.engagement-content {
  max-width: 1480px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 100px;
  align-items: center;
  position: relative;
  z-index: 4;
}

.engagement-meta {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--casaque-mid);
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.engagement-meta-line {
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--casaque-mid), transparent);
}

.engagement-number {
  font-family: var(--display);
  font-size: clamp(160px, 24vw, 360px);
  font-weight: 800;
  font-style: italic;
  line-height: 0.85;
  letter-spacing: -0.05em;
  background: linear-gradient(180deg, var(--casaque-bright) 0%, var(--casaque-light) 25%, var(--casaque) 50%, var(--casaque-mid) 75%, var(--casaque-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 8px 40px rgba(92, 128, 142, 0.4));
}

.engagement-right {
  max-width: 580px;
  position: relative;
  padding: 40px;
  background: rgba(255, 255, 254, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.engagement-right::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--casaque-mid);
  box-shadow: 0 0 12px var(--casaque-mid);
}

.engagement-title {
  font-family: var(--display);
  font-size: clamp(44px, 5.8vw, 84px);
  font-weight: 700;
  font-style: italic;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-top: 28px;
  margin-bottom: 28px;
}

.engagement-title .accent { color: var(--casaque-mid); }

.engagement-description {
  font-family: var(--font);
  font-size: clamp(15px, 1.2vw, 18px);
  font-weight: 400;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* PRINCIPE */
.screen-principle {
  background: var(--casaque-night);
  color: var(--white);
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 40px;
  position: relative;
  z-index: 3;
  overflow: hidden;
}

.scialytic-principle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1500px;
  height: 1500px;
  pointer-events: none;
  z-index: 2;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 254, 0.5) 0%,
    rgba(255, 255, 254, 0.22) 18%,
    rgba(188, 210, 218, 0.15) 35%,
    rgba(92, 128, 142, 0.06) 55%,
    transparent 75%
  );
  filter: blur(3px);
  animation: scialytic-pulse 10s ease-in-out infinite;
}

.principle-content {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 100px;
  align-items: center;
  position: relative;
  z-index: 4;
}

.principle-label {
  font-family: var(--display);
  font-size: clamp(40px, 4.5vw, 64px);
  font-weight: 800;
  font-style: italic;
  letter-spacing: -0.03em;
  line-height: 1.0;
  color: var(--white);
  margin-top: 32px;
}

.principle-text {
  font-family: var(--display);
  font-size: clamp(22px, 2.6vw, 36px);
  font-weight: 500;
  font-style: italic;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--white);
}

.principle-text .accent { color: var(--casaque-bright); font-weight: 700; }

/* CTA HOME */
.screen-cta {
  background: var(--white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 120px 40px 0;
  position: relative;
  z-index: 3;
  overflow: hidden;
}

.screen-cta::before {
  content: '';
  position: absolute;
  top: 35%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1400px;
  height: 1400px;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(
    circle at center,
    rgba(255, 255, 254, 0.85) 0%,
    rgba(188, 210, 218, 0.15) 30%,
    transparent 65%
  );
  filter: blur(2px);
  animation: scialytic-pulse 9s ease-in-out infinite;
}

.cta-content {
  max-width: 1480px;
  margin: auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
  z-index: 4;
}

.cta-title {
  font-family: var(--display);
  font-size: clamp(60px, 7.5vw, 120px);
  font-weight: 800;
  font-style: italic;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin-top: 32px;
}

.cta-title .accent { color: var(--casaque-mid); }

/* RESPONSIVE */
@media (max-width: 1100px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; gap: 24px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .engagement-content,
  .principle-content,
  .cta-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 800px) {
  .nav { padding: 14px 20px; grid-template-columns: 1fr auto; }
  .nav-links, .nav-meta, .nav-status { display: none; }
  .page { padding-top: 70px; }
  .page-hero, .section { padding-left: 24px; padding-right: 24px; }
  .grid-4 { grid-template-columns: 1fr; }
  .footer { padding: 48px 24px 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .whatsapp-widget { bottom: 20px; left: 20px; }
  .screen-hero, .screen-reassurance, .screen-engagement, .screen-principle, .screen-cta {
    padding-left: 24px;
    padding-right: 24px;
  }
  .hero-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .hero-banner-divider { display: none; }
  .engagement-number { font-size: 160px; }
}

@media (max-width: 560px) {
  .whatsapp-btn span { display: none; }
  .whatsapp-btn { padding: 14px; border-radius: 50%; }
  .hero-brand { font-size: 80px; }
  .hero-title { font-size: 36px; }
  .hero-cta-row { flex-direction: column; align-items: stretch; }
  .btn-primary, .btn-secondary { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-reveal { opacity: 1; transform: none; }
}


/* Animations hero — désactivées pour garantir l'affichage en toute condition */