/* ============ TOKENS ============ */
:root{
  --bg: #0A0A0B;
  --bg-alt: #131315;
  --ink: #F5F5F4;
  --ink-70: rgba(245,245,244,.7);
  --ink-45: rgba(245,245,244,.45);
  --gray: #8A8A90;
  --line: rgba(245,245,244,.10);
  --line-strong: rgba(245,245,244,.22);
  --accent: #5EEAD4;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --header-h: 88px;
  --header-h-compact: 60px;
  --ease: cubic-bezier(.16,.8,.24,1);
  --dur: 700ms;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3{margin:0;font-family:var(--font-display);}
p{margin:0;}
img{max-width:100%;display:block;}
button{font-family:inherit;}

::selection{background:var(--ink);color:var(--bg);}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}

.section-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 clamp(20px,5vw,64px);
}

.section{
  padding:clamp(72px,12vw,140px) 0;
  border-top:1px solid var(--line);
}
.section-alt{background:var(--bg-alt);}

.section-eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--gray);
  margin-bottom:18px;
}

.section-title{
  font-size:clamp(28px,4vw,44px);
  line-height:1.15;
  font-weight:600;
  letter-spacing:-.01em;
  color:var(--ink);
}

.section-head{margin-bottom:clamp(40px,6vw,72px);}

/* ============ REVEAL ON SCROLL ============ */
.reveal{
  opacity:0;
  transform:translateY(28px);
  filter:blur(6px);
  transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease), filter var(--dur) var(--ease);
  transition-delay:calc(var(--d,0) * 90ms);
  will-change:opacity, transform, filter;
}
.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
  filter:blur(0);
}
@media (prefers-reduced-motion: reduce){
  .reveal{
    opacity:1 !important;
    transform:none !important;
    filter:none !important;
    transition:none !important;
  }
}

/* ---- Hero title : reveal masqué (wipe) ligne par ligne ---- */
.line-mask{display:block;overflow:hidden;}
.line-wipe{
  display:block;
  transform:translateY(112%);
  transition:transform 900ms var(--ease);
  transition-delay:calc(var(--d,0) * 110ms + 120ms);
  will-change:transform;
}
.line-wipe.is-visible{transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .line-wipe{transform:none !important;transition:none !important;}
}

/* ============ HEADER ============ */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:200;
  height:var(--header-h);
  display:flex;
  align-items:center;
  background:rgba(10,10,11,.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:height 320ms var(--ease), border-color 320ms var(--ease), background 320ms var(--ease);
}
.site-header.is-compact{
  height:var(--header-h-compact);
  border-bottom-color:var(--line);
  background:rgba(10,10,11,.92);
}
@media (prefers-reduced-motion: reduce){
  .site-header{transition:none;}
}

.header-inner{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 clamp(20px,5vw,64px);
  display:flex;
  align-items:center;
  justify-content:space-between;
}

.logo{
  font-family:var(--font-display);
  font-weight:600;
  font-size:17px;
  letter-spacing:.02em;
}
.logo-dot{color:var(--accent);}

.main-nav{display:flex;align-items:center;gap:32px;}
.main-nav a:not(.nav-cta){
  position:relative;
  font-size:14px;
  font-weight:500;
  color:var(--ink-70);
  transition:color 200ms var(--ease);
}
.main-nav a:not(.nav-cta)::after{
  content:'';
  position:absolute;
  left:0; right:100%;
  bottom:-5px;
  height:1px;
  background:var(--accent);
  transition:right 320ms var(--ease);
}
.main-nav a:not(.nav-cta):hover{color:var(--ink);}
.main-nav a:not(.nav-cta):hover::after{right:0;}
.nav-cta{
  padding:9px 18px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  color:var(--ink) !important;
}
.nav-cta:hover{border-color:var(--accent);}

.lang-toggle{
  background:none;
  border:1px solid var(--line-strong);
  color:var(--ink-70);
  border-radius:999px;
  padding:8px 14px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  cursor:pointer;
  transition:color 200ms var(--ease), border-color 200ms var(--ease);
}
.lang-toggle:hover{color:var(--accent);border-color:var(--accent);}
.lang-toggle-mobile{align-self:flex-start;margin-top:10px;}

.menu-toggle{
  display:none;
  width:36px;height:36px;
  background:none;border:none;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
}
.menu-toggle span{
  width:22px;height:1.5px;background:var(--ink);
  transition:transform 260ms var(--ease), opacity 260ms var(--ease);
}
.menu-toggle.is-open span:first-child{transform:translateY(3.75px) rotate(45deg);}
.menu-toggle.is-open span:last-child{transform:translateY(-3.75px) rotate(-45deg);}

.mobile-nav{
  display:none;
  position:fixed;
  top:0; left:0; right:0;
  padding:calc(var(--header-h) + 24px) 24px 32px;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  z-index:150;
  flex-direction:column;
  gap:4px;
  transform:translateY(-100%);
  transition:transform 320ms var(--ease);
}
.mobile-nav.is-open{transform:translateY(0);}
.mobile-nav a{
  font-size:20px;
  font-weight:500;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}

/* ============ INDEX RAIL ============ */
.index-rail{
  position:fixed;
  right:28px;
  top:50%;
  transform:translateY(-50%);
  z-index:180;
  display:flex;
  flex-direction:column;
  gap:16px;
}
.rail-dot{
  display:flex;
  align-items:center;
  gap:10px;
  justify-content:flex-end;
}
.rail-num{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--ink-45);
  transition:color 240ms var(--ease);
}
.rail-label{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--ink);
  opacity:0;
  transform:translateX(6px);
  transition:opacity 200ms var(--ease), transform 200ms var(--ease);
  white-space:nowrap;
}
.rail-dot::after{
  content:'';
  width:6px;height:6px;
  border-radius:50%;
  background:var(--line-strong);
  transition:background 240ms var(--ease), transform 240ms var(--ease);
}
.rail-dot:hover .rail-label,
.rail-dot.is-active .rail-label{opacity:1;transform:translateX(0);}
.rail-dot.is-active .rail-num{color:var(--accent);}
.rail-dot.is-active::after{background:var(--accent);transform:scale(1.4);}

@media (max-width:1100px){
  .index-rail{display:none;}
}

/* ============ INTRO LOADER ============ */
body.intro-lock{overflow:hidden;height:100vh;}

.intro-loader{
  position:fixed;
  inset:0;
  z-index:500;
  background:var(--bg);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  transition:transform 850ms var(--ease), opacity 500ms var(--ease) 300ms;
  will-change:transform;
}
.intro-loader.is-leaving{
  transform:translateY(-100%);
}
.intro-logo{
  font-family:var(--font-display);
  font-weight:600;
  font-size:19px;
  letter-spacing:.03em;
  color:var(--ink);
  opacity:0;
  transform:translateY(10px);
  animation:introLogoIn 650ms var(--ease) 150ms forwards;
}
.intro-logo .logo-dot{color:var(--accent);}
@keyframes introLogoIn{
  to{opacity:1;transform:translateY(0);}
}
.intro-progress{
  width:120px;
  height:1px;
  margin-top:20px;
  background:var(--line-strong);
  overflow:hidden;
}
.intro-progress span{
  display:block;
  height:100%;
  width:0%;
  background:var(--accent);
  animation:introProgress 950ms var(--ease) 250ms forwards;
}
@keyframes introProgress{
  to{width:100%;}
}

/* ============ HERO ============ */
.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding-top:var(--header-h);
  overflow:hidden;
}

.hero-gradient{
  position:absolute;
  inset:-20%;
  background:
    radial-gradient(45% 45% at 20% 25%, rgba(94,234,212,.07), transparent 60%),
    radial-gradient(40% 40% at 85% 70%, rgba(245,245,244,.05), transparent 60%),
    radial-gradient(60% 60% at 50% 100%, rgba(245,245,244,.04), transparent 70%);
  background-size:200% 200%;
  animation:driftGradient 18s ease-in-out infinite alternate;
  z-index:0;
}
@keyframes driftGradient{
  0%{background-position:0% 0%, 100% 100%, 50% 100%;}
  100%{background-position:20% 15%, 80% 85%, 45% 90%;}
}
@media (prefers-reduced-motion: reduce){
  .hero-gradient{animation:none;}
}

.hero-grid{
  position:absolute;
  inset:0;
  z-index:0;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 100% 25%, 8.333% 100%;
  opacity:.6;
  mask-image:linear-gradient(to bottom, black, transparent 85%);
}

.hero-spotlight{
  position:absolute;
  top:0; left:0;
  width:560px;
  height:560px;
  margin:-280px 0 0 -280px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(94,234,212,.10), rgba(94,234,212,.03) 45%, transparent 72%);
  z-index:0;
  pointer-events:none;
  opacity:0;
  transition:opacity 500ms var(--ease);
  will-change:transform;
}
.hero-spotlight.is-active{opacity:1;}
@media (prefers-reduced-motion: reduce), (hover:none){
  .hero-spotlight{display:none;}
}

.hero-inner{
  position:relative;
  z-index:1;
  max-width:1240px;
  margin:0 auto;
  width:100%;
  padding:clamp(32px,6vw,64px) clamp(20px,5vw,64px);
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--gray);
  margin-bottom:22px;
}

.hero-title{
  font-size:clamp(40px,7.4vw,92px);
  line-height:1.03;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--ink);
}
.hero-title .accent{color:var(--accent);}

.hero-foot{
  margin-top:clamp(32px,5vw,52px);
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
}

.hero-sub{
  max-width:480px;
  font-size:clamp(16px,1.6vw,18px);
  line-height:1.55;
  color:var(--ink-70);
}

.hero-actions{
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}

.hero-scroll-cue{
  position:absolute;
  bottom:28px;
  left:50%;
  transform:translateX(-50%);
  width:1px;
  height:52px;
  background:var(--line-strong);
  z-index:1;
  overflow:hidden;
}
.hero-scroll-cue span{
  display:block;
  width:100%;
  height:40%;
  background:var(--accent);
  animation:scrollCue 2.2s ease-in-out infinite;
}
@keyframes scrollCue{
  0%{transform:translateY(-100%);}
  100%{transform:translateY(250%);}
}
@media (prefers-reduced-motion: reduce){
  .hero-scroll-cue span{animation:none;top:0;}
}
@media (max-width:700px){.hero-scroll-cue{display:none;}}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:16px 30px;
  border-radius:999px;
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
}
.btn span{transition:transform 200ms var(--ease);}
.btn-primary{
  background:var(--ink);
  color:var(--bg);
}
.btn-ghost{
  border:1px solid var(--line-strong);
  color:var(--ink);
}
.btn-ghost:hover{border-color:var(--accent);}
.magnetic{transition:transform 260ms var(--ease);}
@media (prefers-reduced-motion: reduce){
  .magnetic{transition:none;}
}

/* ============ SERVICES ============ */
.services-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-left:1px solid var(--line);
}
.service-card{
  padding:32px 26px;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  transition:background 320ms var(--ease);
}
.service-card:hover{background:rgba(245,245,244,.02);}
.service-icon{
  display:inline-flex;
  width:34px;height:34px;
  margin-bottom:22px;
  color:var(--accent);
  transition:transform 420ms var(--ease);
}
.service-icon svg{width:100%;height:100%;}
.service-card:hover .service-icon{transform:translateY(-3px) scale(1.06);}
.service-card h3{
  font-size:19px;
  font-weight:600;
  margin-bottom:12px;
  color:var(--ink);
}
.service-card p{
  font-size:14.5px;
  line-height:1.6;
  color:var(--ink-70);
}
@media (max-width:900px){
  .services-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:560px){
  .services-grid{grid-template-columns:1fr;}
}

/* ============ PROCESS ============ */
.process-list{
  border-top:1px solid var(--line);
}
.process-item{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:24px;
  padding:30px 0;
  border-bottom:1px solid var(--line);
  align-items:baseline;
}
.process-num{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--accent);
}
.process-body h3{
  font-size:22px;
  font-weight:600;
  margin-bottom:10px;
  color:var(--ink);
}
.process-body p{
  font-size:15px;
  line-height:1.6;
  color:var(--ink-70);
  max-width:560px;
}
@media (max-width:640px){
  .process-item{grid-template-columns:1fr;gap:10px;}
}

/* ============ STATS ============ */
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:32px;
}
.stat{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:24px;
  border-top:1px solid var(--line-strong);
}
.stat-num{
  font-family:var(--font-mono);
  font-size:clamp(38px,5vw,58px);
  font-weight:500;
  letter-spacing:-.02em;
  color:var(--ink);
}
.stat-label{
  font-size:13.5px;
  color:var(--gray);
}
@media (max-width:800px){
  .stats-grid{grid-template-columns:repeat(2,1fr);}
}

/* ============ CONTACT ============ */
.contact-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:48px;
  align-items:end;
}
.contact-sub{
  margin-top:18px;
  font-size:16px;
  color:var(--ink-70);
  max-width:420px;
}
.contact-action{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:22px;
}
.email-link{
  font-family:var(--font-display);
  font-size:clamp(22px,3.2vw,32px);
  font-weight:600;
  color:var(--ink);
  border-bottom:2px solid var(--accent);
  padding-bottom:4px;
}
@media (max-width:800px){
  .contact-grid{grid-template-columns:1fr;align-items:start;}
  .contact-action{align-items:flex-start;}
}

/* ============ FOOTER ============ */
.site-footer{
  border-top:1px solid var(--line);
  padding:26px 0;
}
.footer-inner{
  max-width:1240px;
  margin:0 auto;
  padding:0 clamp(20px,5vw,64px);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:14px;
  font-size:12.5px;
  color:var(--gray);
  font-family:var(--font-mono);
}
.footer-legal{
  color:var(--ink-70);
  transition:color 200ms var(--ease);
}
.footer-legal:hover{color:var(--accent);}
.footer-legal-links{
  display:flex;
  gap:20px;
  flex-wrap:wrap;
}

/* ============ MOBILE HEADER SWITCH ============ */
@media (max-width:860px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .mobile-nav{display:flex;}
}

/* ============ LEGAL PAGE ============ */
.legal-main{
  max-width:760px;
  margin:0 auto;
  padding:calc(var(--header-h) + 64px) clamp(20px,5vw,64px) 100px;
}
.legal-main h1{
  font-size:clamp(30px,4vw,40px);
  margin-bottom:8px;
  color:var(--ink);
}
.legal-updated{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gray);
  margin-bottom:48px;
  display:block;
}
.legal-block{
  padding:28px 0;
  border-top:1px solid var(--line);
}
.legal-block h2{
  font-size:18px;
  font-weight:600;
  margin-bottom:12px;
  color:var(--ink);
  font-family:var(--font-display);
}
.legal-block p, .legal-block li{
  font-size:14.5px;
  line-height:1.7;
  color:var(--ink-70);
}
.legal-block ul{margin-top:6px;}
.legal-block li{padding-left:16px;position:relative;margin-bottom:4px;}
.legal-block li::before{
  content:'—';
  position:absolute;left:0;color:var(--accent);
}
.legal-back{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--ink-70);
  margin-bottom:36px;
}
.legal-back:hover{color:var(--accent);}
.legal-disclaimer{
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--line);
  font-size:12px;
  line-height:1.6;
  color:var(--ink-45);
  font-family:var(--font-mono);
}
.legal-crosslinks{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:32px;
}
.legal-crosslinks a{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--ink-70);
  border:1px solid var(--line-strong);
  border-radius:999px;
  padding:8px 16px;
  transition:color 200ms var(--ease), border-color 200ms var(--ease);
}
.legal-crosslinks a:hover{color:var(--accent);border-color:var(--accent);}