/* ==========================================================
   UI Kit · INSTITUTIONNEL — kit.css
   Ambiance SPOTLIGHT · dark v2 « Aurora »
   Plus d'air, glows poussés, italic-serif-néon généreux
   ========================================================== */

body {
  background: var(--lb-bg);
  background-image:
    radial-gradient(ellipse 1400px 700px at 50% -100px, rgba(91, 217, 240, 0.10), transparent 60%),
    radial-gradient(ellipse 900px 500px at 100% 40%, rgba(167, 139, 250, 0.07), transparent 60%),
    radial-gradient(ellipse 700px 400px at 0% 80%, rgba(34, 214, 160, 0.06), transparent 60%);
  color: var(--lb-fg);
  margin: 0;
  overflow-x: hidden;
}

.ik-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-8);
  position: relative;
}

/* ---------- Logo (glow poussé en SPOTLIGHT) ---------- */
.ik-logo {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--lb-fg);
  font-family: var(--font-sans);
  letter-spacing: -0.022em;
  font-weight: var(--fw-medium);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}
.ik-logo-mark {
  flex: none;
  filter: drop-shadow(0 0 18px rgba(91, 217, 240, 0.5));
}
.ik-logo-em {
  font-style: italic;
  font-weight: var(--fw-semibold);
}

/* ---------- Header ---------- */
.ik-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: rgba(8, 9, 15, 0.65);
  border-bottom: 0.5px solid var(--lb-border);
}
.ik-header-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-6);
  padding: 16px var(--space-8);
}
.ik-nav { display: flex; gap: var(--space-8); }
.ik-nav a {
  font-size: var(--text-sm);
  color: var(--lb-fg-2);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
.ik-nav a:hover { color: var(--lb-fg); }
.ik-header-right { display: flex; align-items: center; gap: var(--space-3); }

/* ---------- Buttons ---------- */
.ik-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  line-height: 1;
  border: 0.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: transform var(--dur-instant) var(--ease-out),
              background var(--dur-fast) var(--ease-out),
              border-color var(--dur-fast) var(--ease-out),
              box-shadow var(--dur-fast) var(--ease-out);
}
.ik-btn:active { transform: scale(0.985); }
.ik-btn .arrow { transition: transform var(--dur-base) var(--ease-out); display: inline-block; }
.ik-btn:hover .arrow { transform: translateX(3px); }

/* SPOTLIGHT : CTA primaire = pill cyan glow (au lieu de blanc en VENTE) */
.ik-btn--cyan {
  background: linear-gradient(180deg, rgba(91, 217, 240, 0.18), rgba(91, 217, 240, 0.08));
  color: var(--lb-cyan-bright);
  border: 0.5px solid rgba(91, 217, 240, 0.5);
  box-shadow:
    0 0 0 1px rgba(91, 217, 240, 0.15),
    0 8px 24px -10px rgba(91, 217, 240, 0.6),
    inset 0 0 12px rgba(91, 217, 240, 0.1);
}
.ik-btn--cyan:hover {
  background: linear-gradient(180deg, rgba(91, 217, 240, 0.28), rgba(91, 217, 240, 0.14));
  box-shadow:
    0 0 0 1px rgba(91, 217, 240, 0.4),
    0 12px 32px -8px rgba(91, 217, 240, 0.8),
    inset 0 0 16px rgba(91, 217, 240, 0.15);
  color: #FFFFFF;
}
.ik-btn--ghost {
  background: rgba(255,255,255,0.04); color: var(--lb-fg);
  border-color: var(--lb-border-strong);
}
.ik-btn--ghost:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--lb-border-bright);
}

/* ---------- Eyebrow ---------- */
.ik-eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  margin-bottom: var(--space-10);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--lb-fg-3);
}
.ik-eyebrow-sep { color: var(--lb-fg-4); }
.ik-eyebrow-em { color: var(--lb-cyan); filter: drop-shadow(0 0 6px rgba(91, 217, 240, 0.4)); }

/* ---------- Sections ---------- */
.ik-section {
  padding: clamp(80px, 14vh, 160px) 0;
  position: relative;
}
.ik-section--top {
  padding-top: clamp(100px, 18vh, 200px);
  padding-bottom: clamp(80px, 14vh, 160px);
}

/* ---------- Display (manifeste hero) ---------- */
.ik-display {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: clamp(56px, 9vw, 130px);
  line-height: 0.98;
  letter-spacing: -0.045em;
  color: var(--lb-fg);
  margin: 0 0 var(--space-16);
  max-width: 1100px;
}
.ik-display em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.06em;
  letter-spacing: -0.02em;
  background: var(--lb-gradient-text);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Lead + manifesto grid ---------- */
.ik-manifest-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  max-width: 1000px;
  margin-bottom: var(--space-12);
}
.ik-lead {
  font-family: var(--font-sans);
  font-weight: var(--fw-regular);
  font-size: var(--text-xl);
  line-height: 1.55;
  color: var(--lb-fg-2);
  margin: 0;
  text-wrap: pretty;
}

.ik-cta-row {
  display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap;
}

/* ---------- H2 ---------- */
.ik-h2 {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: clamp(38px, 5vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--lb-fg);
  margin: 0 0 var(--space-16);
  max-width: 760px;
}
.ik-h2 em {
  font-family: var(--font-serif);
  font-style: italic; font-weight: 400;
  font-size: 1.08em;
  letter-spacing: -0.02em;
  background: var(--lb-gradient-text);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.ik-h2--big { font-size: clamp(44px, 6vw, 80px); margin-bottom: 0; }

/* ---------- Big quote ---------- */
.ik-quote-wrap {
  max-width: 1000px;
  padding: clamp(40px, 6vh, 80px) clamp(32px, 5vw, 80px);
  position: relative;
}
.ik-quote-wrap::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 60% at 50% 50%, rgba(91, 217, 240, 0.06), transparent 70%);
  pointer-events: none;
  border-radius: 24px;
}
.ik-quote {
  font-family: var(--font-sans);
  font-weight: var(--fw-medium);
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1.22;
  letter-spacing: -0.025em;
  color: var(--lb-fg);
  margin: 0;
  text-wrap: balance;
  position: relative;
}
.ik-quote em {
  font-family: var(--font-serif);
  font-style: italic; font-weight: 400;
  font-size: 1.06em;
  letter-spacing: -0.02em;
  background: var(--lb-gradient-text);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.ik-attrib {
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--lb-fg-3);
  position: relative;
}

/* ---------- Méthode (3 big steps avec num néon géant) ---------- */
.ik-methode {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
}
.ik-step { display: flex; flex-direction: column; }
.ik-step-num {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: clamp(72px, 8vw, 110px);
  line-height: 0.9;
  letter-spacing: -0.05em;
  background: var(--lb-gradient-text);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: var(--space-6);
  filter: drop-shadow(0 0 24px rgba(91, 217, 240, 0.3));
}
.ik-step-t {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: var(--text-2xl);
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: var(--lb-fg);
  margin: 0 0 var(--space-4);
}
.ik-step-b {
  font-size: var(--text-base);
  color: var(--lb-fg-2);
  line-height: 1.65;
  margin: 0;
}

/* ---------- Principes (3 cards spacieuses) ---------- */
.ik-principes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.ik-principe {
  background: var(--lb-bg-elev-1);
  background-image: var(--lb-gradient-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-10);
  min-height: 280px;
  display: flex; flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out);
}
.ik-principe:hover {
  transform: translateY(-2px);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.05) inset,
    0 20px 50px -22px rgba(0, 0, 0, 0.9),
    inset 0 0 0 0.5px var(--lb-border-strong);
}
.ik-principe::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--lb-gradient-line);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out);
}
.ik-principe:hover::before { opacity: 1; }
.ik-principe-num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  color: var(--lb-cyan);
  margin-bottom: var(--space-5);
  filter: drop-shadow(0 0 6px rgba(91, 217, 240, 0.4));
}
.ik-principe-t {
  font-family: var(--font-sans);
  font-weight: var(--fw-semibold);
  font-size: var(--text-2xl);
  letter-spacing: -0.02em;
  color: var(--lb-fg);
  margin: 0 0 var(--space-4);
  line-height: 1.18;
}
.ik-principe-b {
  font-size: var(--text-base);
  color: var(--lb-fg-2);
  line-height: 1.65;
  margin: 0;
}

/* ---------- Presse ---------- */
.ik-press {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
.ik-press-item {
  padding: var(--space-8) 0;
  border-top: 0.5px solid var(--lb-border);
  display: flex; flex-direction: column;
  gap: var(--space-6);
}
.ik-press-q {
  font-family: var(--font-sans);
  font-weight: var(--fw-regular);
  font-size: var(--text-xl);
  line-height: 1.4;
  letter-spacing: -0.015em;
  color: var(--lb-fg);
  margin: 0;
  text-wrap: pretty;
}
.ik-press-meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--lb-fg-3);
}

/* ---------- Footer ---------- */
.ik-footer {
  padding: clamp(80px, 12vh, 140px) 0 var(--space-12);
  position: relative;
  overflow: hidden;
}
.ik-footer::before {
  content: "";
  position: absolute; left: 50%; top: 0;
  transform: translateX(-50%);
  width: 1000px; height: 600px;
  background: radial-gradient(ellipse 60% 50% at 50% 30%, rgba(91, 217, 240, 0.1), transparent 70%);
  pointer-events: none;
}
.ik-footer-closing {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-12);
  align-items: end;
  margin-bottom: var(--space-20);
  position: relative;
}
.ik-footer-closing .ik-cta-row { justify-content: flex-end; }
.ik-footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
  padding-top: var(--space-12);
  border-top: 0.5px solid var(--lb-border);
  position: relative;
}
.ik-footer-grid h5 {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--lb-fg-3);
  margin: 0 0 var(--space-4);
  font-weight: var(--fw-regular);
}
.ik-footer-grid ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-direction: column; gap: 10px;
}
.ik-footer-grid a {
  color: var(--lb-fg-2); text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--dur-fast) var(--ease-out);
}
.ik-footer-grid a:hover { color: var(--lb-fg); }
.ik-footer-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--track-mono);
  color: var(--lb-fg-3);
  text-transform: uppercase;
  margin: var(--space-4) 0 0;
}
.ik-footer-legal {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: var(--space-6);
  border-top: 0.5px solid var(--lb-border);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--track-mono);
  text-transform: uppercase;
  color: var(--lb-fg-3);
  position: relative;
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .ik-manifest-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .ik-methode { grid-template-columns: 1fr; gap: var(--space-16); }
  .ik-principes { grid-template-columns: 1fr; }
  .ik-press { grid-template-columns: 1fr; }
  .ik-footer-closing { grid-template-columns: 1fr; gap: var(--space-6); }
  .ik-footer-closing .ik-cta-row { justify-content: flex-start; }
  .ik-footer-grid { grid-template-columns: 1fr 1fr; }
  .ik-nav { display: none; }
}
@media (max-width: 600px) {
  .ik-footer-grid { grid-template-columns: 1fr; }
  .ik-shell { padding: 0 var(--space-5); }
}