/* ===== SIS-IDF V4 — DESIGN MODERNE & CHALEUREUX ===== */

/* Import Google Fonts - Outfit (titres) + Inter (texte) */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@200;300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --noir: #0B0B0D;
  --noir-soft: #1a1a1f;
  --turquoise: #1ABC9C;
  --turquoise-fonce: #16a085;
  --turquoise-clair: #E8F8F4;
  --turquoise-glow: rgba(26, 188, 156, 0.4);
  --blanc-casse: #FAFAFA;
  --blanc: #FFFFFF;
  --gris-clair: #F0F0F0;
  --gris-medium: #999;
  --gris-texte: #444;
  
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-medium: 0 12px 40px rgba(0, 0, 0, 0.08);
  --shadow-strong: 0 25px 60px rgba(0, 0, 0, 0.12);
  --shadow-turquoise: 0 8px 30px rgba(26, 188, 156, 0.35);
  
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  
  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  color: var(--noir);
  background: white;
  line-height: 1.65;
  overflow-x: hidden;
  font-weight: 400;
}

h1, h2, h3, h4, h5 {
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.02em;
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== HEADER ===== */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 22px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
  background: transparent;
}
header.scrolled,
header.solid {
  background: rgba(11, 11, 13, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 14px 5%;
  border-bottom: 1px solid rgba(26, 188, 156, 0.1);
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  transition: var(--transition);
}
.logo-wrap:hover { transform: scale(1.02); }
.logo-wrap img { height: 44px; }
.logo-wrap .brand {
  color: white;
  font-family: 'Outfit', sans-serif;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 4px;
}
nav { display: flex; gap: 6px; align-items: center; }
nav a {
  color: white;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  font-weight: 500;
  transition: var(--transition);
  padding: 10px 18px;
  border-radius: var(--radius-pill);
}
nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--turquoise);
}
nav a.active {
  background: var(--turquoise);
  color: var(--noir);
}
.menu-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  transition: var(--transition);
}
.menu-toggle:hover { background: rgba(255, 255, 255, 0.15); }

/* ===== HERO ===== */
.hero {
  height: 100vh;
  min-height: 700px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero.hero-page { height: 75vh; min-height: 550px; }
.hero-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 1;
  animation: zoomSlow 25s infinite alternate ease-in-out;
}
@keyframes zoomSlow {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}
.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(180deg, 
    rgba(11, 11, 13, 0.4) 0%, 
    rgba(11, 11, 13, 0.3) 40%, 
    rgba(11, 11, 13, 0.92) 100%);
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  color: white;
  max-width: 1100px;
  padding: 0 5%;
  animation: heroFadeIn 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-tag {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(26, 188, 156, 0.15);
  border: 1px solid rgba(26, 188, 156, 0.4);
  color: var(--turquoise);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  letter-spacing: 4px;
  margin-bottom: 30px;
  font-weight: 600;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(10px);
}
.hero-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(38px, 6vw, 76px);
  font-weight: 300;
  line-height: 1.05;
  margin-bottom: 30px;
  letter-spacing: -0.03em;
}
.hero-title .highlight {
  color: var(--turquoise);
  font-weight: 600;
}
.hero-subtitle {
  font-size: clamp(15px, 1.8vw, 19px);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 50px;
  font-weight: 300;
  font-style: italic;
  font-family: 'Inter', sans-serif;
}
.hero-rotation {
  height: 32px;
  margin-bottom: 50px;
  position: relative;
  overflow: hidden;
}
.rotating-slogan {
  position: absolute;
  width: 100%;
  font-family: 'Inter', sans-serif;
  font-style: italic;
  font-size: clamp(15px, 1.8vw, 19px);
  color: rgba(255, 255, 255, 0.85);
  opacity: 0;
  animation: rotate-slogan 12s infinite;
  font-weight: 300;
}
.rotating-slogan:nth-child(1) { animation-delay: 0s; }
.rotating-slogan:nth-child(2) { animation-delay: 4s; }
.rotating-slogan:nth-child(3) { animation-delay: 8s; }
@keyframes rotate-slogan {
  0%, 5% { opacity: 0; transform: translateY(20px); }
  8%, 30% { opacity: 1; transform: translateY(0); }
  33%, 100% { opacity: 0; transform: translateY(-20px); }
}
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 20px 44px;
  background: var(--turquoise);
  color: var(--noir);
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  box-shadow: var(--shadow-turquoise);
}
.hero-cta:hover {
  background: white;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 20px 50px rgba(26, 188, 156, 0.6);
}
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.7);
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  z-index: 3;
  font-weight: 500;
}
.scroll-indicator::after {
  content: '';
  display: block;
  margin: 14px auto 0;
  width: 1px;
  height: 35px;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0.7), transparent);
  animation: scrollPulse 2s infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.5; transform: scaleY(0.7); }
}

/* ===== VALUES BAR (3 valeurs) ===== */
.values {
  background: white;
  padding: 90px 5%;
  position: relative;
}
.values::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 60px;
  background: white;
  clip-path: polygon(0 100%, 100% 100%, 100% 0, 0 60%);
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}
.value-item {
  background: var(--blanc-casse);
  padding: 50px 40px;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
  border: 1px solid transparent;
}
.value-item:hover {
  background: white;
  border-color: var(--turquoise-clair);
  transform: translateY(-8px);
  box-shadow: var(--shadow-medium);
}
.value-icon-wrap {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--turquoise) 0%, var(--turquoise-fonce) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: var(--shadow-turquoise);
}
.value-item:hover .value-icon-wrap {
  transform: rotate(-8deg) scale(1.05);
}
.value-icon { width: 32px; height: 32px; color: white; }
.value-title {
  font-family: 'Outfit', sans-serif;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--noir);
}
.value-desc {
  font-size: 15px;
  color: var(--gris-texte);
  line-height: 1.6;
  font-weight: 400;
}

/* ===== SECTIONS ===== */
section { padding: 120px 5%; }
.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 80px;
}
.section-tag {
  display: inline-block;
  padding: 8px 20px;
  background: var(--turquoise-clair);
  color: var(--turquoise-fonce);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 24px;
  font-weight: 700;
  border-radius: var(--radius-pill);
}
.section-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 300;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.section-title .highlight {
  color: var(--turquoise);
  font-weight: 600;
}
.section-desc {
  color: var(--gris-texte);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
}

/* ===== SERVICES ===== */
.services {
  background: var(--blanc-casse);
  position: relative;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}
.service-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  text-align: left;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: var(--noir);
  display: block;
  border: 1px solid var(--gris-clair);
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--turquoise), var(--turquoise-fonce));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.service-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-strong);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 28px;
  background: linear-gradient(135deg, var(--turquoise-clair) 0%, white 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.service-card:hover .service-icon {
  background: linear-gradient(135deg, var(--turquoise) 0%, var(--turquoise-fonce) 100%);
  transform: rotate(-6deg) scale(1.05);
}
.service-icon svg {
  width: 30px;
  height: 30px;
  stroke: var(--turquoise);
  transition: stroke 0.4s;
}
.service-card:hover .service-icon svg { stroke: white; }
.service-card h3 {
  font-family: 'Outfit', sans-serif;
  font-size: 24px;
  margin-bottom: 14px;
  font-weight: 600;
}
.service-card p {
  color: var(--gris-texte);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 28px;
  font-weight: 400;
}
.service-link {
  color: var(--turquoise);
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.3s;
}
.service-card:hover .service-link {
  gap: 16px;
  color: var(--turquoise-fonce);
}

/* ===== CASE STUDY ===== */
.case-study {
  background: var(--noir);
  color: white;
  padding: 120px 5%;
  position: relative;
  overflow: hidden;
}
.case-study::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26, 188, 156, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.case-study .section-title { color: white; }
.case-study .section-desc { color: rgba(255, 255, 255, 0.7); }
.case-study .section-tag {
  background: rgba(26, 188, 156, 0.2);
  color: var(--turquoise);
}
.case-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}
.case-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 60px;
}
.case-photo {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/5;
  transition: var(--transition);
  box-shadow: var(--shadow-strong);
}
.case-photo:hover {
  transform: scale(1.03) translateY(-5px);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}
.case-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s;
}
.case-photo:hover img { transform: scale(1.08); }
.case-label {
  position: absolute;
  top: 24px;
  left: 24px;
  background: var(--turquoise);
  color: var(--noir);
  padding: 10px 22px;
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-turquoise);
}
.case-info {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}
.case-quote {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: 30px;
  color: white;
  font-style: italic;
}
.case-quote::before {
  content: '"';
  color: var(--turquoise);
  font-size: 80px;
  line-height: 0;
  margin-right: 8px;
  vertical-align: -25px;
  font-family: 'Outfit', sans-serif;
}
.case-tags {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.case-tag {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.05);
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}
.case-tag:hover {
  background: rgba(26, 188, 156, 0.15);
  border-color: var(--turquoise);
}
.case-tag::before {
  content: '✓';
  color: var(--turquoise);
  font-weight: 700;
  font-size: 16px;
}

/* ===== ENGAGEMENTS ===== */
.engagements {
  background: white;
  position: relative;
}
.engagements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.engagement-card {
  text-align: center;
  padding: 45px 30px;
  background: var(--blanc-casse);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}
.engagement-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--turquoise) 0%, var(--turquoise-fonce) 100%);
  opacity: 0;
  transition: opacity 0.4s;
  z-index: 0;
  border-radius: var(--radius-lg);
}
.engagement-card:hover {
  transform: translateY(-10px);
  color: white;
  box-shadow: var(--shadow-turquoise);
}
.engagement-card:hover::before { opacity: 1; }
.engagement-card > * { position: relative; z-index: 1; }
.engagement-card .icon-wrap {
  width: 60px;
  height: 60px;
  margin: 0 auto 22px;
  background: white;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: var(--shadow-soft);
}
.engagement-card:hover .icon-wrap {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  box-shadow: none;
}
.engagement-card .icon {
  width: 28px;
  height: 28px;
  color: var(--turquoise);
  transition: color 0.4s;
}
.engagement-card:hover .icon { color: white; }
.engagement-card h4 {
  font-family: 'Outfit', sans-serif;
  font-size: 18px;
  margin-bottom: 10px;
  font-weight: 600;
}
.engagement-card p {
  font-size: 13px;
  color: var(--gris-medium);
  line-height: 1.6;
  transition: color 0.4s;
}
.engagement-card:hover p { color: rgba(255, 255, 255, 0.9); }

/* ===== EXPERTISE SPLIT ===== */
.expertise {
  background: var(--blanc-casse);
  padding: 0;
}
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 650px;
  align-items: stretch;
}
.expertise-image {
  background-size: cover;
  background-position: center;
  position: relative;
  min-height: 500px;
}
.expertise-image::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(11, 11, 13, 0.15) 0%, rgba(26, 188, 156, 0.1) 100%);
}
.expertise-content {
  padding: 100px 70px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: white;
}
.expertise-tag {
  display: inline-block;
  padding: 8px 20px;
  background: var(--turquoise-clair);
  color: var(--turquoise-fonce);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 24px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  width: fit-content;
}
.expertise-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(30px, 3.4vw, 44px);
  font-weight: 300;
  margin-bottom: 26px;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.expertise-title .highlight {
  color: var(--turquoise);
  font-weight: 600;
}
.expertise-desc {
  color: var(--gris-texte);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 36px;
  font-weight: 400;
}
.expertise-list {
  list-style: none;
  margin-bottom: 40px;
}
.expertise-list li {
  padding: 14px 0 14px 36px;
  font-size: 15px;
  color: var(--gris-texte);
  position: relative;
  border-bottom: 1px solid var(--gris-clair);
  font-weight: 500;
}
.expertise-list li:last-child { border-bottom: none; }
.expertise-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  background: var(--turquoise);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.expertise-list li::after {
  content: '✓';
  position: absolute;
  left: 6px;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-size: 13px;
  font-weight: 700;
}
.expertise-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 18px 38px;
  background: var(--noir);
  color: white;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  width: fit-content;
}
.expertise-cta:hover {
  background: var(--turquoise);
  transform: translateX(8px);
  box-shadow: var(--shadow-turquoise);
}

/* ===== PRESTATIONS ===== */
.prestations { background: white; }
.prestations-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}
.prestation-card {
  background: var(--blanc-casse);
  padding: 42px 36px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.prestation-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 0;
  background: linear-gradient(to bottom, var(--turquoise), var(--turquoise-fonce));
  transition: height 0.4s;
  border-radius: 0 4px 4px 0;
}
.prestation-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-medium);
  background: white;
}
.prestation-card:hover::before { height: 70%; }
.prestation-card-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 22px;
  color: var(--turquoise);
  transition: var(--transition);
}
.prestation-card:hover .prestation-card-icon {
  transform: scale(1.1);
}
.prestation-card h4 {
  font-family: 'Outfit', sans-serif;
  font-size: 19px;
  margin-bottom: 12px;
  font-weight: 600;
}
.prestation-card p {
  color: var(--gris-texte);
  font-size: 14px;
  line-height: 1.7;
  font-weight: 400;
}

/* ===== CONFIANCE ===== */
.confiance {
  background: var(--blanc-casse);
  text-align: center;
}
.confiance-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
.confiance-item {
  font-family: 'Outfit', sans-serif;
  font-size: 15px;
  color: var(--noir);
  font-weight: 600;
  background: white;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  border: 1px solid var(--gris-clair);
  letter-spacing: 0.5px;
}
.confiance-item:hover {
  background: var(--turquoise);
  color: white;
  border-color: var(--turquoise);
  transform: translateY(-3px);
  box-shadow: var(--shadow-turquoise);
}

/* ===== CONTACT BAR ===== */
.contact-bar {
  background: linear-gradient(135deg, var(--turquoise) 0%, var(--turquoise-fonce) 100%);
  padding: 110px 5%;
  color: #073B33;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.contact-bar::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
  border-radius: 50%;
}
.contact-bar::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(11, 11, 13, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}
.contact-bar > * { position: relative; }
.contact-bar-tag {
  display: inline-block;
  padding: 10px 24px;
  background: rgba(11, 11, 13, 0.1);
  font-family: 'Inter', sans-serif;
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 24px;
  border-radius: var(--radius-pill);
}
.contact-bar-title {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(30px, 4.2vw, 48px);
  font-weight: 300;
  margin-bottom: 44px;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.contact-bar-title strong { font-weight: 700; }
.contact-bar-buttons {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 20px 40px;
  text-decoration: none;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: var(--transition);
}
.btn-primary {
  background: var(--noir);
  color: white;
}
.btn-primary:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
}
.btn-secondary {
  background: white;
  color: var(--noir);
}
.btn-secondary:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.2);
}

/* ===== FOOTER ===== */
footer {
  background: var(--noir);
  color: rgba(255, 255, 255, 0.7);
  padding: 80px 5% 35px;
  position: relative;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto 50px;
}
.footer-brand img { height: 42px; margin-bottom: 22px; }
.footer-brand h4 {
  font-family: 'Outfit', sans-serif;
  color: white;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  margin-bottom: 22px;
}
.footer-col h5 {
  font-family: 'Outfit', sans-serif;
  color: var(--turquoise);
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 24px;
  font-weight: 700;
}
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 12px;
  transition: var(--transition);
  font-weight: 400;
}
.footer-col a:hover {
  color: var(--turquoise);
  transform: translateX(4px);
}
.footer-col p {
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  letter-spacing: 1.5px;
}
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  margin: 0;
}
.footer-social a:hover {
  border-color: var(--turquoise);
  background: var(--turquoise);
  transform: translateY(-3px) scale(1.05);
}
.footer-social svg { width: 18px; height: 18px; stroke: white; }

/* ===== RESPONSIVE ===== */
@media (max-width: 968px) {
  nav { display: none; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; }
  nav.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--noir);
    padding: 30px;
    gap: 14px;
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
  }
  .values-grid { grid-template-columns: 1fr; gap: 20px; }
  .services-grid { grid-template-columns: 1fr; }
  .engagements-grid { grid-template-columns: repeat(2, 1fr); }
  .expertise-grid { grid-template-columns: 1fr; }
  .expertise-content { padding: 60px 40px; }
  .prestations-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 600px) {
  section { padding: 80px 5%; }
  .case-photos { grid-template-columns: 1fr; }
  .engagements-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .expertise-content { padding: 50px 25px; }
}