/* ===========================
   RESET & BASE
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --navy:       #0D1B2A;
  --navy-light: #1A2F45;
  --blue:       #2563EB;
  --blue-light: #3B82F6;
  --blue-pale:  #EFF6FF;
  --text:       #1E293B;
  --text-light: #475569;
  --border:     #E2E8F0;
  --white:      #FFFFFF;
  --cream:      #F8FAFC;

  --font-body:  'Inter', system-ui, sans-serif;
  --font-title: 'Playfair Display', Georgia, serif;

  --radius:     12px;
  --radius-lg:  20px;
  --shadow:     0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.12);

  --nav-h:      68px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
p { color: var(--text-light); }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===========================
   BUTTONS
=========================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--blue);
  color: var(--white);
  font-family: var(--font-body);
  font-size: .9375rem;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background .2s, transform .15s, box-shadow .2s;
}
.btn-primary svg { flex-shrink: 0; transition: transform .2s; }
.btn-primary:hover {
  background: var(--blue-light);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(37,99,235,.35);
}
.btn-primary:hover svg { transform: translateX(3px); }
.btn-large { padding: 16px 36px; font-size: 1rem; }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--navy);
  font-size: .9375rem;
  font-weight: 500;
  padding: 14px 20px;
  border-radius: 8px;
  border: 1.5px solid var(--border);
  transition: border-color .2s, background .2s, color .2s;
}
.btn-ghost:hover {
  border-color: var(--blue);
  background: var(--blue-pale);
  color: var(--blue);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--blue);
  font-size: .9rem;
  font-weight: 500;
  border-bottom: 1.5px solid var(--blue);
  padding-bottom: 2px;
  transition: opacity .2s;
}
.btn-outline svg { flex-shrink: 0; }
.btn-outline:hover { opacity: .7; }

/* ===========================
   NAV
=========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.nav.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 1px 12px rgba(0,0,0,.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  height: 100%;
}
.nav-logo {
  font-weight: 600;
  font-size: .9375rem;
  color: var(--navy);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-links a:not(.btn-nav) {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-light);
  padding: 6px 12px;
  border-radius: 6px;
  transition: color .2s, background .2s;
}
.nav-links a:not(.btn-nav):hover {
  color: var(--navy);
  background: var(--cream);
}
.btn-nav {
  background: var(--blue);
  color: var(--white) !important;
  font-size: .875rem;
  font-weight: 500;
  padding: 9px 18px;
  border-radius: 7px;
  margin-left: 8px;
  transition: background .2s;
}
.btn-nav:hover { background: var(--blue-light) !important; }

/* Lang switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: 20px;
}
.lang-sep {
  font-size: .75rem;
  color: var(--border);
  user-select: none;
}
.lang-btn {
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  padding: 4px 7px;
  border-radius: 5px;
  letter-spacing: .04em;
  transition: color .2s, background .2s;
}
.lang-btn:hover { color: var(--navy); background: var(--cream); }
.lang-btn.active { color: var(--navy); background: var(--cream); }

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  margin-left: auto;
}
.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   HERO
=========================== */
.hero {
  min-height: 100vh;
  background: linear-gradient(160deg, #0D1B2A 0%, #162947 60%, #1d3a6b 100%);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-h);
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(37,99,235,.2) 0%, transparent 70%),
    radial-gradient(ellipse 40% 60% at 10% 80%, rgba(59,130,246,.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 300px;
  overflow: visible;
}

.hero-eyebrow {
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #3B82F6;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-title);
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-title em {
  font-style: italic;
  font-weight: 500;
  color: #93C5FD;
}
.hero-desc {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: rgba(255,255,255,.72);
  margin-bottom: 40px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.hero-actions .btn-ghost {
  color: rgba(255,255,255,.85);
  border-color: rgba(255,255,255,.25);
}
.hero-actions .btn-ghost:hover {
  border-color: rgba(255,255,255,.6);
  background: rgba(255,255,255,.08);
  color: var(--white);
}

/* Hero visual */
.hero-visual {
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  align-self: flex-start;
  margin-top: calc(-1 * var(--nav-h));
  margin-left: -40px;
}
.hero-photo-wrap {
  position: relative;
  width: 100%;
  max-width: 420px;
}
.hero-photo {
  width: 100%;
  height: 500px;
  object-fit: cover;
  object-position: center 15%;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: 0 32px 80px rgba(0,0,0,.4);
}

/* Hero card — overlay coin bas droit */
.hero-card {
  position: absolute;
  bottom: -180px;
  right: -48px;
  left: auto;
  width: 280px;
  background: rgba(13,27,42,.82);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 24px 20px;
  box-shadow: 0 16px 48px rgba(0,0,0,.35);
}
.hero-card-icon {
  width: 40px;
  height: 40px;
  background: rgba(37,99,235,.4);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: #93C5FD;
}
.hero-card-icon svg { flex-shrink: 0; }
.hero-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 3px;
}
.hero-card-sub {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 16px;
}
.hero-card-divider {
  height: 1px;
  background: rgba(255,255,255,.12);
  margin-bottom: 14px;
}
.hero-card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.hero-card-list li {
  font-size: .8rem;
  color: rgba(255,255,255,.75);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-card-list li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #3B82F6;
  flex-shrink: 0;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,.4);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .06em;
  animation: bounce 2s infinite;
}
.hero-scroll svg { flex-shrink: 0; }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ===========================
   VALUES
=========================== */
.values {
  background: var(--white);
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}
.values-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.value-item { text-align: center; padding: 0 16px; }
.value-icon {
  width: 56px;
  height: 56px;
  background: var(--blue-pale);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.value-icon svg { flex-shrink: 0; color: var(--blue); }
.value-item h3 { font-size: 1.0625rem; font-weight: 600; color: var(--navy); margin-bottom: 8px; }
.value-item p { font-size: .9rem; line-height: 1.6; }

/* ===========================
   SECTION HEADERS
=========================== */
.section-header { text-align: center; margin-bottom: 56px; }
.section-eyebrow {
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--navy);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 1.0625rem;
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto;
}

/* ===========================
   EXPERTISE
=========================== */
.expertise { background: var(--cream); padding: 100px 0; }
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.expertise-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}
.expertise-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: #BFDBFE;
}
.expertise-card-icon {
  width: 44px;
  height: 44px;
  background: var(--blue-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.expertise-card-icon svg { flex-shrink: 0; color: var(--blue); }
.expertise-card h3 { font-size: 1rem; font-weight: 600; color: var(--navy); margin-bottom: 8px; }
.expertise-card p { font-size: .875rem; line-height: 1.65; }

/* ===========================
   PARCOURS
=========================== */
.parcours { background: var(--white); padding: 100px 0 0; }
.parcours-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  padding-bottom: 80px;
}
.parcours-text { position: sticky; top: calc(var(--nav-h) + 32px); }
.parcours-text h2 { margin-bottom: 24px; }
.parcours-text p { font-size: 1rem; line-height: 1.75; margin-bottom: 16px; }
.parcours-text .btn-outline { margin-top: 16px; }

.parcours-timeline { display: flex; flex-direction: column; }
.timeline-item {
  display: flex;
  gap: 24px;
  position: relative;
  padding-bottom: 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 24px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}
.timeline-item:last-child::before { display: none; }
.timeline-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--white);
  flex-shrink: 0;
  margin-top: 2px;
  position: relative;
  z-index: 1;
  transition: border-color .2s;
}
.timeline-dot.active {
  border-color: var(--blue);
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(37,99,235,.15);
}
.timeline-item:hover .timeline-dot { border-color: var(--blue); }
.timeline-label {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 4px;
}
.timeline-content h4 { font-size: 1.0625rem; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.timeline-content p { font-size: .9rem; line-height: 1.65; }

/* Logos références */
.references {
  background: var(--cream);
  border-top: 1px solid var(--border);
  padding: 48px 0;
}
.references-label {
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-light);
  text-align: center;
  margin-bottom: 32px;
}
.references-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
}
.ref-logo {
  object-fit: contain;
  opacity: .55;
  transition: opacity .2s;
  filter: grayscale(1);
}
.ref-logo:hover { opacity: .9; filter: grayscale(0); }
.ref-logo--wide  { height: 36px; width: auto; max-width: 160px; }
.ref-logo--square { height: 48px; width: auto; max-width: 80px; }

/* ===========================
   ACTIVITES
=========================== */
.activites { background: var(--navy); padding: 100px 0; }
.activites .section-eyebrow { color: #3B82F6; }
.activites .section-title { color: var(--white); }

.activites-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 20px;
}
/* Featured card spans full height of col 1 */
.activite-card.activite-featured { grid-row: 1 / 3; }

.activite-conf {
  grid-column: 2;
  grid-row: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.activite-conf-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  min-height: 200px;
  transition: transform .4s ease;
}
.activite-conf:hover .activite-conf-img { transform: scale(1.03); }

.activite-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: background .25s, border-color .25s;
}
.activite-card:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.2);
}
.activite-card.activite-featured {
  background: rgba(37,99,235,.25);
  border-color: rgba(59,130,246,.35);
}
.activite-card.activite-featured:hover { background: rgba(37,99,235,.32); }
.activite-icon {
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.activite-icon svg { flex-shrink: 0; color: #93C5FD; }
.activite-number {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}
.activite-card h3 { font-size: 1.125rem; font-weight: 600; color: var(--white); margin-bottom: 12px; }
.activite-card p { font-size: .9rem; line-height: 1.7; color: rgba(255,255,255,.6); }

/* ===========================
   CTA CONFÉRENCES
=========================== */
.solliciter {
  background: linear-gradient(135deg, #0D1B2A 0%, #1d3a6b 100%);
  padding: 80px 0;
}
.solliciter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.solliciter-text { flex: 1; }
.solliciter-text .section-eyebrow { color: #3B82F6; }
.solliciter-title {
  font-family: var(--font-title);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 600;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 16px;
}
.solliciter-text p { color: rgba(255,255,255,.65); font-size: 1rem; line-height: 1.7; }
.solliciter-action { flex-shrink: 0; }

@media (max-width: 768px) {
  .solliciter-inner { flex-direction: column; align-items: flex-start; }
  .solliciter-action .btn-primary { width: 100%; justify-content: center; }
}

/* ===========================
   CONTACT
=========================== */
.contact { background: var(--cream); padding: 100px 0; }
.contact .section-desc { margin-bottom: 8px; }

.addresses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}
.address-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
  transition: box-shadow .2s, transform .2s;
}
.address-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.address-icon {
  width: 48px;
  height: 48px;
  background: var(--blue-pale);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.address-icon svg { flex-shrink: 0; color: var(--blue); }
.address-arr {
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 8px;
}
.address-card h4 { font-size: 1.0625rem; font-weight: 600; color: var(--navy); margin-bottom: 4px; }
.address-card p { font-size: .9rem; }

.contact-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}
.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-light);
  background: var(--white);
  border: 1px solid var(--border);
  padding: 10px 20px;
  border-radius: 8px;
  transition: color .2s, border-color .2s, box-shadow .2s;
}
.contact-link svg { flex-shrink: 0; }
.contact-link-logo { width: 18px; height: 18px; object-fit: contain; flex-shrink: 0; }
.contact-link:hover {
  color: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 2px 8px rgba(37,99,235,.12);
}

/* Lang switcher — contact section */
.lang-contact {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}
.lang-contact-btn {
  font-size: .9rem;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-light);
  cursor: pointer;
  transition: color .2s, border-color .2s, box-shadow .2s;
  gap: 8px;
}
.lang-contact-btn:hover {
  color: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 2px 8px rgba(37,99,235,.12);
}
.lang-contact-btn.active {
  color: var(--blue);
  border-color: var(--blue);
  background: var(--blue-pale);
}

/* ===========================
   FOOTER
=========================== */
.footer { background: var(--navy); padding: 40px 0; }
.footer-inner { text-align: center; }
.footer-name { font-size: 1rem; font-weight: 600; color: var(--white); margin-bottom: 6px; }
.footer-sub { font-size: .875rem; color: rgba(255,255,255,.5); margin-bottom: 16px; }
.footer-centre { font-size: .8rem; color: rgba(255,255,255,.3); max-width: 600px; margin: 0 auto; line-height: 1.7; }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
  .activites-grid { grid-template-columns: 1fr 1fr; }
  .activite-card.activite-featured { grid-row: auto; grid-column: 1 / -1; }
  .activite-conf { grid-column: auto; grid-row: auto; }
}

@media (max-width: 768px) {
  /* Nav mobile */
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--white);
    border-top: 1px solid var(--border);
    padding: 20px 24px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
  }
  .nav-links.open a:not(.btn-nav) { padding: 12px 16px; border-radius: 8px; }
  .nav-links.open .btn-nav { margin: 8px 0 0; text-align: center; padding: 13px; }
  .nav-burger { display: flex; }

  /* Hero */
  .hero-inner { grid-template-columns: 1fr; gap: 32px; padding-top: 48px; padding-bottom: 80px; }
  .hero-visual { margin-top: 0; margin-left: 0; }
  .hero-photo-wrap { max-width: 100%; }
  .hero-photo { height: 440px; object-position: center 15%; border-radius: var(--radius-lg); }
  .hero-card {
    position: relative;
    bottom: auto; right: auto; left: auto;
    width: 100%;
    margin-top: 16px;
    box-sizing: border-box;
  }
  .hero-scroll { display: none; }

  /* Values */
  .values-inner { grid-template-columns: 1fr; gap: 32px; }

  /* Expertise */
  .expertise-grid { grid-template-columns: 1fr; }

  /* Parcours */
  .parcours-inner { grid-template-columns: 1fr; gap: 48px; }
  .parcours-text { position: static; }

  /* Activites */
  .activites-grid { grid-template-columns: 1fr; }
  .activite-conf { min-height: 240px; }

  /* Contact */
  .addresses-grid { grid-template-columns: 1fr; }

  /* Références */
  .references-logos { gap: 32px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost { width: 100%; justify-content: center; }
  .hero-badge { bottom: -16px; left: 16px; }
}

/* ===========================
   ANIMATIONS
=========================== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: none;
}