:root {
  --navy-950: #061420;
  --navy-800: #0A2A47;
  --blue-600: #1B6FC0;
  --cyan-400: #35BEEA;
  --grey-100: #EAEEF3;
  --amber-500: #E08A2B;

  --text-light: #F1F4F8;
  --text-light-secondary: #B9C9D8;
  --text-light-muted: #8FB6D6;

  --text-dark: #12212E;
  --text-dark-secondary: #3B4A58;
  --text-dark-muted: #5A6875;
  --border-dark-on-light: #D5DDE6;

  --border-light: rgba(143, 182, 214, 0.18);
  --border-light-strong: rgba(143, 182, 214, 0.22);

  --font-display: 'Saira', sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
  margin: 0;
  background: var(--navy-950);
  color: var(--text-light);
  font-family: var(--font-body);
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(700px 500px at 15% -8%, rgba(27,111,192,0.14), transparent 60%),
    radial-gradient(600px 500px at 100% 15%, rgba(53,190,234,0.09), transparent 60%);
}

a { color: var(--cyan-400); text-decoration: none; }
a:hover { color: #FFFFFF; }

img { max-width: 100%; display: block; }

/* ============ LAYOUT ============ */

.main { min-width: 0; }

/* ============ REVEAL ON SCROLL (léger, une seule fois, pas de scroll-jacking) ============ */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 650ms var(--ease), transform 650ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ HERO ============ */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-bottom: 1px solid var(--border-light);
}

.hero-visual {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6,20,32,0.8) 0%, rgba(6,20,32,0.2) 40%, rgba(6,20,32,0.95) 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(53,190,234,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53,190,234,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 22px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: background 250ms var(--ease), padding 250ms var(--ease), border-color 250ms var(--ease), backdrop-filter 250ms var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-condensed {
  background: rgba(6, 20, 32, 0.86);
  backdrop-filter: blur(10px);
  padding: 14px 40px;
  border-bottom-color: var(--border-light);
}

.nav-logo {
  width: 152px;
  height: auto;
  filter: invert(1) hue-rotate(180deg);
}

@media (max-width: 480px) { .nav-logo { width: 118px; } }

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-links a {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-light-secondary);
}

.nav-links a:not(.nav-cta):hover { color: var(--text-light); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 16px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  flex: none;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-light);
  transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}

.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 780px) {
  .nav { padding: 18px 24px; }
  .nav.is-condensed { padding: 14px 24px; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 22px 24px 28px;
    background: rgba(6, 20, 32, 0.97);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
  }
  .nav-links.is-open { display: flex; }
  .nav-links .nav-cta { align-self: flex-start; }
}

.nav-cta {
  font-weight: 600 !important;
  font-size: 12.5px !important;
  border: 1px solid var(--cyan-400);
  color: var(--cyan-400) !important;
  padding: 10px 18px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: background 200ms var(--ease), color 200ms var(--ease);
}

.nav-cta:hover {
  background: var(--cyan-400);
  color: var(--navy-950) !important;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 40px 40px 44px;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #FFFFFF;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 6.6vw, 88px);
  line-height: 0.96;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  color: #FFFFFF;
  margin: 0;
  max-width: 18ch;
  text-wrap: balance;
}

.hero-cta {
  margin-top: 6px;
}

/* ============ TITRES — apparition lettre par lettre, déclenchée à l'entrée dans le viewport ============ */

.hero-title-word {
  display: inline-block;
  white-space: nowrap;
}

.char-reveal .char {
  display: inline-block;
  opacity: 0;
  transform: translateX(-20px);
  animation-name: charIn;
  animation-duration: 500ms;
  animation-timing-function: var(--ease);
  animation-fill-mode: forwards;
  animation-play-state: paused;
}

.char-reveal.is-visible .char {
  animation-play-state: running;
}

@keyframes charIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.btn-glass {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-light) !important;
  padding: 15px 26px;
  background: rgba(241,244,248,0.06);
  border: 1px solid rgba(241,244,248,0.22);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.18),
    inset 0 -1px 0 rgba(0,0,0,0.35),
    0 8px 30px rgba(0,0,0,0.35);
  transition: background 220ms var(--ease), border-color 220ms var(--ease), transform 220ms var(--ease), box-shadow 220ms var(--ease);
}

.btn-glass::after {
  content: '→';
  transition: transform 220ms var(--ease);
}

.btn-glass:hover {
  background: rgba(53,190,234,0.14);
  border-color: rgba(53,190,234,0.55);
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.25),
    inset 0 -1px 0 rgba(0,0,0,0.35),
    0 12px 40px rgba(53,190,234,0.18);
}

.btn-glass:hover::after { transform: translateX(3px); }

/* ============ GENERIC SECTION ============ */

.section {
  padding: 84px 30px 90px;
  border-bottom: 1px solid var(--border-light);
  scroll-margin-top: 90px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan-400);
  margin-bottom: 14px;
}

.eyebrow-light { color: var(--blue-600); margin-bottom: 20px; }

.section h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.04;
  letter-spacing: -0.015em;
  text-transform: uppercase;
  color: var(--text-light);
  margin: 0;
}

/* ============ DOMAINES — grille photo ============ */

.domaines {
  position: relative;
  background:
    radial-gradient(1100px 700px at 50% -10%, rgba(27,111,192,0.14), transparent 60%),
    linear-gradient(180deg, #050D18 0%, #071829 55%, #050D18 100%);
}

.domain-carousel {
  --slide-w: min(62vmin, 620px);
}

.domain-track {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  display: flex;
  width: fit-content;
  transition: transform 800ms cubic-bezier(0.4, 0, 0.2, 1);
}

.domain-carousel {
  perspective: 1400px;
  overflow: hidden;
}

.domain-slide {
  position: relative;
  flex: none;
  width: var(--slide-w);
  aspect-ratio: 3 / 2;
  margin: 0 16px;
  cursor: pointer;
  transform: scale(0.85) rotateX(6deg);
  transform-origin: bottom;
  transition: transform 500ms var(--ease);
}

.domain-slide.is-current {
  transform: scale(1) rotateX(0deg);
  cursor: default;
}

.domain-slide-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform 120ms ease-out;
}

.domain-slide-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  transition: opacity 500ms var(--ease);
}

.domain-slide.is-current .domain-slide-img { opacity: 1; }

.domain-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6,20,32,0.1) 0%, rgba(6,20,32,0.3) 45%, rgba(6,20,32,0.96) 100%);
}

.domain-slide-content {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 1;
  padding: 24px 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 400ms var(--ease) 80ms, transform 400ms var(--ease) 80ms;
}

.domain-slide.is-current .domain-slide-content {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.domain-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6,20,32,0.8);
  border: 1px solid var(--border-light-strong);
}

.domain-slide-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  color: #FFFFFF;
  margin: 0;
}

.domain-slide-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text-light-secondary);
}

.domain-slide-btn {
  align-self: flex-start;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan-400) !important;
  border-bottom: 1px solid transparent;
}

.domain-slide-btn:hover { border-bottom-color: var(--cyan-400); }

.domain-carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-top: 30px;
}

.carousel-arrow {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-light-strong);
  color: var(--text-light-secondary);
  cursor: pointer;
  transition: border-color 200ms var(--ease), color 200ms var(--ease), background 200ms var(--ease);
}

.carousel-arrow:hover {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
  background: rgba(53,190,234,0.08);
}

.domain-carousel-dots {
  display: flex;
  align-items: center;
  gap: 9px;
}

.domain-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(143,182,214,0.35);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background 200ms var(--ease), transform 200ms var(--ease);
}

.domain-dot:hover { background: rgba(143,182,214,0.6); }

.domain-dot.is-current {
  background: var(--cyan-400);
  transform: scale(1.25);
}

@media (max-width: 640px) {
  .domain-carousel { --slide-w: min(86vmin, 420px); }
  .domain-slide { margin: 0 10px; }
}

/* ============ METHODE ============ */

.methode {
  background: var(--grey-100);
  color: var(--text-dark);
}

.methode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 44px;
  align-items: start;
}

.methode-quote {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text-dark);
  text-wrap: pretty;
}

.methode-body {
  display: flex;
  flex-direction: column;
  gap: 22px;
  min-width: 0;
}

.methode-body p {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--text-dark-secondary);
  max-width: 62ch;
}

.methode-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  border-top: 1px solid var(--border-dark-on-light);
  padding-top: 22px;
}

.methode-stat-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-dark-muted);
  margin-bottom: 6px;
}

.methode-stat-value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-dark);
}

/* ============ GALERIE ============ */

.galerie {
  position: relative;
  overflow: hidden;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

@media (max-width: 780px) {
  .gallery-grid { grid-template-columns: 1fr; }
}

.gallery-item {
  margin: 0;
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--border-light-strong);
}

.gallery-item img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 500ms var(--ease);
}

.gallery-item:hover img { transform: scale(1.04); }

.gallery-item figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 14px 18px;
  background: linear-gradient(180deg, transparent, rgba(6,20,32,0.92));
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light);
}

/* ============ MISSIONS ============ */

.missions {
  position: relative;
  overflow: hidden;
  padding-bottom: 100px;
}

.missions::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(53,190,234,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53,190,234,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}

.missions > * { position: relative; }

.missions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.mission-card {
  margin-top: 30px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-light-strong);
  padding: 30px 26px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  min-width: 0;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

.mission-card-2 { margin-top: 74px; }
.mission-card-3 { margin-top: 118px; }

@media (max-width: 720px) {
  .mission-card,
  .mission-card-2,
  .mission-card-3 { margin-top: 0; }
}

.mission-card:hover {
  border-color: var(--cyan-400);
  background: rgba(53,190,234,0.06);
}

.mission-num {
  font-family: var(--font-mono);
  font-size: 46px;
  line-height: 1;
  color: rgba(53,190,234,0.32);
  margin-bottom: 20px;
}

.mission-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 23px;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 18px;
}

.mission-list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.mission-list div {
  font-size: 15px;
  line-height: 1.55;
  color: var(--text-light-secondary);
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 8px;
}

.mission-list div::before {
  content: '—';
  color: var(--cyan-400);
}

/* ============ CONTACT ============ */

.contact-phone {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.4vw, 54px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-light) !important;
  display: inline-block;
  margin-bottom: 10px;
  position: relative;
}

.contact-phone::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  height: 2px;
  width: 0%;
  background: var(--cyan-400);
  transition: width 220ms var(--ease);
}

.contact-phone:hover { color: var(--cyan-400) !important; }
.contact-phone:hover::after { width: 100%; }

.contact-email {
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 22px);
  color: var(--text-light-muted) !important;
  display: block;
}

.contact-email:hover { color: var(--cyan-400) !important; }

.contact-address {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-light-muted);
  border-top: 1px solid var(--border-light-strong);
  margin-top: 30px;
  padding-top: 18px;
  line-height: 2;
}

/* ============ FOOTER ============ */

.footer {
  padding: 30px;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-light-muted);
}

/* ============ REDUCED MOTION ============ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .domain-track,
  .domain-slide,
  .domain-slide-media,
  .domain-slide-img,
  .domain-slide-content,
  .gallery-item img { transition: none !important; }
  .char-reveal .char {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
  .hero-content { transform: none !important; opacity: 1 !important; }
  * { transition-duration: 0.001ms !important; }
}