/* ==========================================================================
   PERFORM SOLUTIONS 360° — Design System
   ========================================================================== */

:root {
  /* Couleurs de marque */
  --navy-900: #071A33;
  --navy-800: #0B2545;
  --navy-700: #0F2E57;
  --blue-600: #1478C8;
  --blue-500: #1E8EE0;
  --cyan-500: #16C4D9;
  --cyan-400: #4CDCEB;
  --green-500: #5BD94A;
  --green-400: #7ED957;
  --white-mist: #F5FAFD;
  --fog-100: #EAF2F8;
  --fog-200: #DCE8F2;
  --slate-500: #5E7793;
  --slate-700: #35506B;

  --text-on-dark: #F5FAFD;
  --text-on-dark-soft: #AEC3DA;
  --text-on-light: #0B2545;
  --text-on-light-soft: #4A6179;

  /* Dégradés */
  --grad-primary: linear-gradient(135deg, var(--blue-600), var(--cyan-500));
  --grad-accent: linear-gradient(135deg, var(--cyan-500), var(--green-500));
  --grad-hero: radial-gradient(60% 60% at 50% 30%, rgba(22, 196, 217, 0.22), transparent 70%),
    linear-gradient(180deg, var(--navy-900) 0%, var(--navy-800) 60%, var(--navy-700) 100%);
  --grad-dark-section: linear-gradient(180deg, var(--navy-800), var(--navy-900));

  /* Typographie */
  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;

  /* Espacements */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Rayons & ombres */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-soft: 0 10px 30px -12px rgba(7, 26, 51, 0.25);
  --shadow-lift: 0 20px 45px -18px rgba(7, 26, 51, 0.35);
  --shadow-glow-cyan: 0 0 0 1px rgba(22, 196, 217, 0.25), 0 20px 50px -18px rgba(22, 196, 217, 0.35);

  /* Mise en page */
  --container-max: 1180px;
  --header-h: 88px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-med: 0.4s var(--ease-out);
}

/* ==========================================================================
   Reset
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body, h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }
img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; padding: 0; }
input, textarea { font: inherit; color: inherit; }

html, body { max-width: 100%; }
body {
  font-family: var(--font-body);
  background: var(--white-mist);
  color: var(--text-on-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  color: inherit;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

section { position: relative; }

/* Focus visibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: var(--space-sm);
  top: -60px;
  background: var(--navy-900);
  color: var(--white-mist);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-sm); }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ==========================================================================
   Typographie utilitaire
   ========================================================================== */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-600);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--grad-accent);
  border-radius: 2px;
}
.section--dark .eyebrow { color: var(--cyan-400); }

.section-title {
  font-size: clamp(1.7rem, 1.2rem + 2vw, 2.6rem);
  margin-top: var(--space-xs);
  max-width: 44ch;
}
.section-subtitle {
  margin-top: var(--space-sm);
  font-size: 1.05rem;
  color: var(--text-on-light-soft);
  max-width: 56ch;
}
.section--dark .section-subtitle { color: var(--text-on-dark-soft); }

.section-head {
  margin-bottom: var(--space-xl);
  max-width: 760px;
}
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow::before { display: none; }

/* ==========================================================================
   Boutons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  padding: 0.9rem 1.6rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn--primary {
  background: var(--grad-accent);
  color: var(--navy-900);
  box-shadow: var(--shadow-soft);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); }

.btn--ghost {
  background: transparent;
  border: 1.5px solid rgba(245, 250, 253, 0.35);
  color: var(--white-mist);
}
.btn--ghost:hover { border-color: var(--cyan-400); background: rgba(22, 196, 217, 0.1); }

.btn--dark {
  background: var(--navy-900);
  color: var(--white-mist);
}
.btn--dark:hover { transform: translateY(-2px); box-shadow: var(--shadow-lift); }

.btn--sm { padding: 0.65rem 1.2rem; font-size: 0.85rem; }

/* ==========================================================================
   En-tête
   ========================================================================== */

.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(7, 26, 51, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(245, 250, 253, 0.08);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
.site-header.is-scrolled {
  background: rgba(7, 26, 51, 0.92);
  box-shadow: 0 10px 30px -15px rgba(0,0,0,0.5);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}
.brand img {
  height: 62px;
  width: auto;
  border-radius: 10px;
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-text strong {
  font-family: var(--font-display);
  color: var(--white-mist);
  font-size: 1rem;
  letter-spacing: 0.02em;
}
.brand-text span {
  font-size: 0.68rem;
  color: var(--cyan-400);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.nav-list a {
  position: relative;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-on-dark-soft);
  padding: 0.4rem 0.1rem;
  transition: color var(--transition-fast);
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: -2px;
  height: 2px;
  background: var(--grad-accent);
  border-radius: 2px;
  transition: right var(--transition-fast);
}
.nav-list a:hover,
.nav-list a.is-active { color: var(--white-mist); }
.nav-list a:hover::after,
.nav-list a.is-active::after { right: 0; }

/* Sous-menu déroulant "Expertise" */
.nav-item--dropdown { position: relative; }
.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-on-dark-soft);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem 0.1rem;
  transition: color var(--transition-fast);
}
.nav-dropdown-toggle:hover,
.nav-item--dropdown.is-open .nav-dropdown-toggle,
.nav-dropdown-toggle.has-active-child { color: var(--white-mist); }
.nav-caret { width: 14px; height: 14px; transition: transform var(--transition-fast); }
.nav-item--dropdown.is-open .nav-caret { transform: rotate(180deg); }

.nav-dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 220px;
  background: var(--white-mist);
  border: 1px solid var(--fog-200);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 45px -14px rgba(7, 26, 51, 0.45);
  padding: var(--space-2xs);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 50;
}
.nav-dropdown::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: var(--white-mist);
  border-left: 1px solid var(--fog-200);
  border-top: 1px solid var(--fog-200);
}
.nav-item--dropdown:hover .nav-dropdown,
.nav-item--dropdown.is-open .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown li { list-style: none; }
.nav-dropdown a {
  display: block;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-on-light);
  white-space: nowrap;
}
.nav-dropdown a:hover,
.nav-dropdown a.is-active { background: var(--fog-100); color: var(--blue-600); }
.nav-dropdown a::after { display: none; }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.lang-switch {
  display: flex;
  align-items: center;
  border: 1px solid rgba(245, 250, 253, 0.25);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 2px;
}
.lang-switch button {
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-on-dark-soft);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.lang-switch button[aria-pressed="true"] {
  background: var(--grad-accent);
  color: var(--navy-900);
}

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(245, 250, 253, 0.25);
  color: var(--white-mist);
}
.burger svg { width: 20px; height: 20px; }

/* Menu mobile plein écran */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--navy-900);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-12px);
  transition: opacity var(--transition-med), transform var(--transition-med), visibility 0s linear var(--transition-med);
}
.mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity var(--transition-med), transform var(--transition-med), visibility 0s;
}
.mobile-menu .nav-list {
  flex-direction: column;
  gap: var(--space-md);
  text-align: center;
}
.mobile-menu .nav-list a { font-size: 1.4rem; font-family: var(--font-display); }

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  padding-top: calc(var(--header-h) + var(--space-sm));
  padding-bottom: var(--space-sm);
  min-height: min(680px, 90vh);
  display: flex;
  align-items: center;
  background: var(--grad-hero);
  color: var(--text-on-dark);
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  top: var(--header-h);
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  pointer-events: none;
}
.hero-photos { position: absolute; inset: 0; }
.hero-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 1.8s var(--ease-out);
}
.hero-photo.is-active { opacity: 1; }
.hero-photo--portrait { object-position: center 15%; }
.hero-scrim {
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
  opacity: 0.55;
}
.hero-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(900px, 140vw);
  height: min(900px, 140vw);
  transform: translate(-50%, -50%);
  border: 1px solid rgba(76, 220, 235, 0.18);
  border-radius: 50%;
  animation: spin-slow 70s linear infinite;
}
.hero-ring::before {
  content: "";
  position: absolute;
  inset: 40px;
  border: 1px dashed rgba(91, 217, 74, 0.16);
  border-radius: 50%;
}
@keyframes spin-slow {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-ecg {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 14%;
  width: 100%;
  height: 90px;
  opacity: 0.55;
}
.hero-ecg path {
  fill: none;
  stroke: url(#ecgGradient);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw-ecg 5.5s var(--ease-out) infinite;
}
@keyframes draw-ecg {
  0% { stroke-dashoffset: 1400; }
  55% { stroke-dashoffset: 0; }
  100% { stroke-dashoffset: -1400; }
}

.hero-leader-badge {
  position: absolute;
  left: var(--space-md);
  bottom: var(--space-md);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-2xs) var(--space-sm) var(--space-2xs) var(--space-2xs);
  background: rgba(7, 26, 51, 0.55);
  border: 1px solid rgba(245, 250, 253, 0.18);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.hero-leader-badge:hover { border-color: var(--cyan-500); background: rgba(7, 26, 51, 0.75); }
.hero-leader-badge img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  flex-shrink: 0;
  border: 1px solid rgba(76, 220, 235, 0.4);
}
.hero-leader-badge strong {
  display: block;
  font-size: 0.82rem;
  color: var(--white-mist);
  font-family: var(--font-display);
}
.hero-leader-badge span span {
  font-size: 0.74rem;
  color: var(--text-on-dark-soft);
}

.hero-content {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hero-title {
  font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem);
  font-weight: 600;
  background: linear-gradient(135deg, #FFFFFF 20%, var(--cyan-400) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.88;
}
.hero-subtitle {
  margin-top: var(--space-xs);
  font-size: clamp(0.88rem, 0.8rem + 0.3vw, 1rem);
  color: var(--text-on-dark-soft);
  opacity: 0.85;
  max-width: 56ch;
}
.hero-actions {
  margin-top: var(--space-sm);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

/* ==========================================================================
   Icon badges
   ========================================================================== */

.icon-badge {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--grad-primary);
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--shadow-soft);
}
.icon-badge svg { width: 26px; height: 26px; stroke-width: 1.6; }
.icon-badge--accent { background: var(--grad-accent); color: var(--navy-900); }

/* ==========================================================================
   Sections génériques
   ========================================================================== */

.section {
  padding-block: var(--space-3xl);
}
.section--light { background: var(--white-mist); }
.section--alt { background: var(--fog-100); }
.section--dark {
  background: var(--grad-dark-section);
  color: var(--text-on-dark);
}
.section--dark h2, .section--dark h3 { color: var(--white-mist); }

/* Motif filigrane hexagones */
.hex-pattern {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.5;
  pointer-events: none;
  mix-blend-mode: screen;
}

/* Reveal on scroll */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}
[data-reveal-group] > * { transition-delay: calc(var(--i, 0) * 90ms); }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   Services
   ========================================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.service-card {
  background: #fff;
  border: 1px solid var(--fog-200);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
  border-color: var(--cyan-500);
}
.service-card .icon-badge { margin-bottom: var(--space-md); }
.service-card h3 {
  font-size: 1.15rem;
  margin-bottom: var(--space-2xs);
  color: var(--navy-900);
}
.service-card p {
  color: var(--text-on-light-soft);
  font-size: 0.95rem;
}

.overview-card {
  display: flex;
  flex-direction: column;
}
.overview-card p { flex-grow: 1; margin-bottom: var(--space-sm); }
.overview-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--blue-600);
  width: fit-content;
}
.overview-card .card-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}
.overview-card .card-link:hover svg { transform: translateX(3px); }

/* ==========================================================================
   Méthodologie — timeline
   ========================================================================== */

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-md);
  counter-reset: step;
}
.timeline-track {
  position: absolute;
  top: 34px;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(20, 120, 200, 0.15);
  border-radius: 3px;
  z-index: 0;
}
.timeline-track-fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: var(--grad-accent);
  border-radius: 3px;
  transition: width 1.4s var(--ease-out);
}
.timeline-step {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.timeline-number {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  background: #fff;
  border: 3px solid var(--blue-600);
  color: var(--blue-600);
  transition: background var(--transition-med), color var(--transition-med), border-color var(--transition-med);
}
.timeline-step.is-active .timeline-number {
  background: var(--grad-accent);
  border-color: transparent;
  color: var(--navy-900);
}
.timeline-step h3 {
  font-size: 1.05rem;
  color: var(--navy-900);
}
.timeline-step .label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-500);
}
.timeline-step p {
  font-size: 0.88rem;
  color: var(--text-on-light-soft);
}
.timeline-step .actions {
  font-size: 0.85rem;
  color: var(--slate-700);
  padding-top: var(--space-2xs);
  border-top: 1px dashed var(--fog-200);
}
.timeline-step .actions strong {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 2px;
}

/* ==========================================================================
   Interventions — roue / grille
   ========================================================================== */

.causes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-md);
}
.cause-card {
  position: relative;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(245, 250, 253, 0.04);
  border: 1px solid rgba(245, 250, 253, 0.1);
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
.cause-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-500);
  background: rgba(22, 196, 217, 0.08);
}
.cause-card .cause-index {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--green-400);
  margin-bottom: var(--space-xs);
}
.cause-card h3 {
  font-size: 1.02rem;
  color: var(--white-mist);
  margin-bottom: var(--space-2xs);
}
.cause-card p {
  font-size: 0.88rem;
  color: var(--text-on-dark-soft);
}

/* ==========================================================================
   Leadership
   ========================================================================== */

.leader-card {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-xl);
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--fog-200);
  align-items: center;
}
.leader-portrait {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  background: var(--grad-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.leader-portrait svg { width: 58%; height: 58%; }
.leader-portrait img { width: 100%; height: 100%; object-fit: cover; display: block; }
.leader-monogram {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--white-mist);
}
.leader-body h3 {
  font-size: 1.5rem;
  color: var(--navy-900);
}
.leader-role {
  color: var(--blue-600);
  font-weight: 600;
  font-size: 0.95rem;
  margin-top: var(--space-3xs);
}
.leader-tagline {
  margin-top: var(--space-sm);
  font-style: italic;
  color: var(--text-on-light-soft);
  border-left: 3px solid var(--cyan-500);
  padding-left: var(--space-sm);
}
.leader-facts {
  margin-top: var(--space-lg);
  display: grid;
  gap: var(--space-md);
}
.leader-facts div strong {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-500);
  margin-bottom: var(--space-3xs);
}
.leader-facts div p { font-size: 0.92rem; color: var(--text-on-light-soft); }
.home-intro-cta { margin-top: var(--space-md); }

/* ==========================================================================
   Certifications
   ========================================================================== */

.cert-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-md);
}
.cert-group {
  background: #fff;
  border: 1px solid var(--fog-200);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-soft);
}
.cert-group h3 {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 1rem;
  color: var(--navy-900);
  margin-bottom: var(--space-sm);
}
.cert-group h3 .icon-badge {
  width: 36px; height: 36px;
  border-radius: 8px;
}
.cert-group h3 .icon-badge svg { width: 18px; height: 18px; }
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xs);
}
.pill {
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  background: var(--fog-100);
  color: var(--slate-700);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--fog-200);
}
.cert-note {
  font-size: 0.88rem;
  color: var(--text-on-light-soft);
  line-height: 1.5;
}

/* ==========================================================================
   Technologies
   ========================================================================== */

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}
.tech-card {
  position: relative;
  padding: var(--space-lg) var(--space-md);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(20, 120, 200, 0.14), rgba(7, 26, 51, 0.6));
  border: 1px solid rgba(76, 220, 235, 0.18);
  overflow: hidden;
}
.tech-card::after {
  content: "";
  position: absolute;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(22,196,217,0.35), transparent 70%);
  top: -60px; right: -60px;
  filter: blur(4px);
}
.tech-card h3 { color: var(--white-mist); font-size: 1.05rem; margin-bottom: var(--space-2xs); }
.tech-card p { color: var(--text-on-dark-soft); font-size: 0.9rem; }
.tech-card .icon-badge { margin-bottom: var(--space-md); }

/* ==========================================================================
   Présentation / QR
   ========================================================================== */

.presentation-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-xl);
  align-items: center;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lift);
  border: 1px solid var(--fog-200);
}
.qr-frame {
  background: #fff;
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  border: 2px solid var(--fog-200);
  box-shadow: var(--shadow-soft);
}
.qr-frame img { width: 150px; height: 150px; }
.presentation-text h3 { font-size: 1.4rem; color: var(--navy-900); }
.presentation-text p { margin-top: var(--space-xs); color: var(--text-on-light-soft); }
.presentation-text .btn { margin-top: var(--space-md); }

/* ==========================================================================
   Contact
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}
.contact-cards {
  display: grid;
  gap: var(--space-sm);
}
.contact-card {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(245, 250, 253, 0.05);
  border: 1px solid rgba(245, 250, 253, 0.12);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.contact-card:hover { border-color: var(--cyan-500); background: rgba(22, 196, 217, 0.08); }
.contact-card--static { opacity: 0.75; }
.contact-card--static:hover { border-color: rgba(245, 250, 253, 0.12); background: rgba(245, 250, 253, 0.05); }
.contact-card .icon-badge { width: 44px; height: 44px; border-radius: 10px; }
.contact-card .icon-badge svg { width: 20px; height: 20px; }
.contact-card strong {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-400);
}
.contact-card span { color: var(--text-on-dark); font-size: 0.95rem; }

.legal-block {
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(245, 250, 253, 0.03);
  border: 1px dashed rgba(245, 250, 253, 0.15);
  font-size: 0.85rem;
  color: var(--text-on-dark-soft);
}

.contact-form {
  background: rgba(245, 250, 253, 0.05);
  border: 1px solid rgba(245, 250, 253, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: grid;
  gap: var(--space-sm);
}
.form-field { display: grid; gap: var(--space-3xs); }
.form-field label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-on-dark-soft);
}
.form-field input,
.form-field textarea,
.form-field select {
  background: rgba(7, 26, 51, 0.5);
  border: 1px solid rgba(245, 250, 253, 0.18);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
  color: var(--text-on-dark);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: rgba(174, 195, 218, 0.5); }
.form-field textarea { resize: vertical; min-height: 110px; }
.form-error {
  font-size: 0.78rem;
  color: #FFB4B4;
  min-height: 1em;
}
.contact-form .btn { justify-self: start; margin-top: var(--space-2xs); }
.contact-form .btn:disabled { opacity: 0.6; cursor: not-allowed; }
.form-status { font-size: 0.85rem; min-height: 1em; }
.form-status--success { color: var(--green-400); }
.form-status--error { color: #FFB4B4; }

.form-field--checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-xs);
}
.form-field--checkbox input[type="checkbox"] {
  margin-top: 0.2rem;
  width: 18px;
  height: 18px;
  accent-color: var(--cyan-500);
  flex-shrink: 0;
}
.form-field--checkbox label {
  font-size: 0.85rem;
  color: var(--text-on-dark-soft);
  font-weight: 400;
}

.form-notice {
  font-size: 0.85rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 150, 60, 0.12);
  border: 1px solid rgba(255, 150, 60, 0.4);
  color: #FFD9A8;
}
.form-notice[hidden] { display: none; }

.notice-box {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(230, 150, 40, 0.1);
  border: 1px solid rgba(230, 150, 40, 0.4);
  color: var(--text-on-light-soft);
}
.notice-box svg { flex-shrink: 0; width: 24px; height: 24px; color: #B5700A; margin-top: 2px; }
.notice-box strong { display: block; color: var(--navy-900); margin-bottom: 2px; }

/* ==========================================================================
   Pied de page
   ========================================================================== */

.site-footer {
  background: var(--navy-900);
  color: var(--text-on-dark-soft);
  padding-block: var(--space-xl) var(--space-md);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(245, 250, 253, 0.1);
}
.footer-brand { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-brand img { height: 56px; width: auto; border-radius: 10px; align-self: flex-start; }
.footer-brand p { font-size: 0.9rem; max-width: 34ch; }
.footer-col h4 {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-400);
  margin-bottom: var(--space-sm);
}
.footer-col ul { display: grid; gap: var(--space-2xs); }
.footer-col a, .footer-col span { font-size: 0.9rem; color: var(--text-on-dark-soft); }
.footer-col a:hover { color: var(--white-mist); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  font-size: 0.82rem;
}
.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  color: var(--cyan-400);
  font-weight: 600;
  font-size: 0.82rem;
}
.back-to-top svg { width: 16px; height: 16px; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); row-gap: var(--space-xl); }
  .timeline-track { display: none; }
  .leader-card { grid-template-columns: 200px 1fr; padding: var(--space-lg); gap: var(--space-lg); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .main-nav { display: none; }
  .burger { display: flex; }
  .header-actions .lang-switch,
  .header-actions .btn--primary { display: none; }
  .presentation-card { grid-template-columns: 1fr; text-align: center; justify-items: center; }
}

.mobile-menu .lang-switch button { padding: 0.5rem 0.9rem; font-size: 0.9rem; }

@media (max-width: 560px) {
  .site-header .container { padding-inline: var(--space-sm); }
  .header-actions { gap: var(--space-xs); }
  .brand-text span { display: none; }
}

@media (max-width: 360px) {
  .brand-text { display: none; }
}

@media (max-width: 640px) {
  .services-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .leader-card { grid-template-columns: 1fr; text-align: center; }
  .leader-portrait { max-width: 200px; margin-inline: auto; }
  .leader-body { min-width: 0; }
  .leader-facts { text-align: left; }
  .home-intro-cta { white-space: normal; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cert-groups { grid-template-columns: 1fr; }
  .section { padding-block: var(--space-2xl); }
  .hero { padding-top: calc(var(--header-h) + var(--space-xl)); padding-bottom: var(--space-2xl); }
}