/* ==========================================================================
   Bethkepha — feuille de style
   Charte : Minuit #0F1B33 · Teal #0FA394 (sombre : #2ED3C0)
            Fond clair #F5F7FA · Gris slogan #5B6B86 (sombre : #9AA8BF)
   ========================================================================== */

:root {
  --midnight: #0F1B33;
  --teal: #0FA394;
  --teal-bright: #2ED3C0;

  --bg: #F5F7FA;
  --bg-alt: #ECF0F5;
  --surface: #FFFFFF;
  --ink: #0F1B33;
  --ink-soft: #3E4B66;
  --muted: #5B6B86;
  --line: rgba(15, 27, 51, .1);
  --accent: #0FA394;
  --accent-ink: #0B7F74;           /* teal assombri pour le texte (contraste AA) */
  --accent-glow: rgba(15, 163, 148, .28);
  --success: #0B7F74;
  --danger: #C2413A;

  /* Couleurs de l'emblème (héritées dans les <use>) */
  --e-ink: var(--midnight);
  --e-teal: var(--teal);

  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow: 0 1px 2px rgba(15,27,51,.05), 0 20px 50px -20px rgba(15,27,51,.25);
  --ease: cubic-bezier(.2, .7, .2, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --container: 1200px;
  --header-h: 76px;
}

/* Sections sombres (hero, contact, pied de page) et mode sombre global */
.dark {
  --bg: #0B1428;
  --bg-alt: #0F1B33;
  --surface: rgba(255, 255, 255, .04);
  --ink: #F3F6FA;
  --ink-soft: #C3CCDA;
  --muted: #9AA8BF;
  --line: rgba(243, 246, 250, .1);
  --accent: #2ED3C0;
  --accent-ink: #2ED3C0;
  --accent-glow: rgba(46, 211, 192, .35);
  --success: #2ED3C0;
  --danger: #FF8A80;
  --e-ink: #F3F6FA;
  --e-teal: #2ED3C0;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 30px 60px -25px rgba(0,0,0,.8);
  background: var(--bg);
  color: var(--ink);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1428;
    --bg-alt: #0F1B33;
    --surface: #13213D;
    --ink: #F3F6FA;
    --ink-soft: #C3CCDA;
    --muted: #9AA8BF;
    --line: rgba(243, 246, 250, .1);
    --accent: #2ED3C0;
    --accent-ink: #2ED3C0;
    --accent-glow: rgba(46, 211, 192, .3);
    --success: #2ED3C0;
    --danger: #FF8A80;
    --e-ink: #F3F6FA;
    --e-teal: #2ED3C0;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 30px 60px -25px rgba(0,0,0,.8);
  }
  .dark { --bg: #081022; }
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.0625rem/1.65 var(--font);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-weight: 600; line-height: 1.05; margin: 0; letter-spacing: -.035em; }
h2 em, h1 em { font-style: normal; color: var(--accent-ink); }
p { margin: 0 0 1em; }
::selection { background: var(--teal); color: #fff; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.sr-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.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; }

/* Emblème réutilisable */
.e-link { stroke: var(--e-teal); }
.e-arch { stroke: var(--e-ink); }
.e-dot { fill: var(--e-teal); }
.e-hex { stroke: var(--e-teal); }

.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; position: relative; }
.muted { color: var(--ink-soft); }

.skip {
  position: absolute; left: 1rem; top: -100px; z-index: 100;
  background: var(--ink); color: var(--bg); padding: .6rem 1rem; border-radius: 8px;
}
.skip:focus { top: 1rem; }

/* Barre de progression de lecture */
.progress {
  position: fixed; inset: 0 0 auto; height: 2px; z-index: 60;
  background: linear-gradient(90deg, var(--teal), var(--teal-bright));
  transform-origin: left; transform: scaleX(var(--p, 0));
  box-shadow: 0 0 12px var(--teal-bright);
}

.eyebrow {
  display: inline-flex; align-items: center; gap: .65rem;
  font-size: .76rem; font-weight: 600; letter-spacing: .28em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 1.3rem;
}
.eyebrow-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
  animation: beacon 2.6s var(--ease) infinite;
}
@keyframes beacon { 50% { box-shadow: 0 0 0 7px transparent; } }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  transition: background .4s var(--ease), border-color .4s var(--ease), color .4s, height .4s var(--ease);
  border-bottom: 1px solid transparent;
  --e-ink: var(--midnight); --e-teal: var(--teal); color: var(--midnight);
}
.site-header.is-scrolled {
  height: 64px;
  background: rgba(245, 247, 250, .72);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-color: rgba(15,27,51,.08);
}
.site-header.on-dark { --e-ink: #F3F6FA; --e-teal: #2ED3C0; color: #F3F6FA; }
.site-header.on-dark.is-scrolled { background: rgba(11, 20, 40, .6); border-color: rgba(243,246,250,.08); }
@media (prefers-color-scheme: dark) {
  .site-header { --e-ink: #F3F6FA; --e-teal: #2ED3C0; color: #F3F6FA; }
  .site-header.is-scrolled { background: rgba(11, 20, 40, .6); border-color: rgba(243,246,250,.08); }
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; }
.logo { height: 34px; width: auto; overflow: visible; }
.logo-word { fill: var(--e-ink); transition: fill .4s; }
.logo { transition: transform .6s var(--ease-out); }
.brand:hover .logo { transform: scale(1.04); }

/* Petits logos des projets, à droite du logo */
.header-left { display: flex; align-items: center; gap: 1.1rem; }
.brand-family { display: flex; align-items: center; gap: .7rem; }
.brand-sep { width: 1px; height: 26px; background: currentColor; opacity: .18; margin-right: .2rem; }
.fam { position: relative; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; transition: transform .5s var(--ease-out), opacity .3s; opacity: .85; }
.fam img { width: 26px; height: 26px; object-fit: contain; }
.fam:hover, .fam:focus-visible { transform: translateY(-2px) scale(1.12); opacity: 1; }
.fam::after { /* petite étiquette au survol */
  content: attr(data-label); position: absolute; top: calc(100% + 8px); left: 50%; translate: -50% -4px;
  padding: .3rem .6rem; border-radius: 6px; font-size: .72rem; font-weight: 600; white-space: nowrap; letter-spacing: .02em;
  background: var(--midnight); color: #F3F6FA; opacity: 0; pointer-events: none; transition: opacity .25s, translate .3s var(--ease-out);
}
.fam:hover::after, .fam:focus-visible::after { opacity: 1; translate: -50% 0; }
.fam-tt .on-darkbg { display: none; }
.site-header.on-dark .fam-tt .on-light, body.menu-open .fam-tt .on-light { display: none; }
.site-header.on-dark .fam-tt .on-darkbg, body.menu-open .fam-tt .on-darkbg { display: block; }
.site-header.on-dark .fam::after { background: #F3F6FA; color: var(--midnight); }
@media (prefers-color-scheme: dark) {
  .fam-tt .on-light { display: none; }
  .fam-tt .on-darkbg { display: block; }
  .fam::after { background: #F3F6FA; color: var(--midnight); }
}

.nav { display: flex; align-items: center; gap: 2.2rem; font-size: .95rem; font-weight: 500; }
.nav a { position: relative; opacity: .72; transition: opacity .25s; }
.nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 2px; border-radius: 2px;
  background: var(--e-teal); transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease);
}
.nav a:hover, .nav a.is-active { opacity: 1; }
.nav a:hover::after, .nav a.is-active::after { transform: scaleX(1); transform-origin: left; }
.nav-cta {
  opacity: 1 !important; padding: .55rem 1.2rem; border-radius: 999px;
  border: 1px solid currentColor; transition: background .3s, color .3s, border-color .3s;
}
.nav-cta:hover { background: var(--e-teal); border-color: var(--e-teal); color: #fff; }

.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; position: relative; color: inherit; }
.nav-toggle span { position: absolute; left: 11px; right: 11px; height: 1.5px; background: currentColor; transition: transform .35s var(--ease), top .35s var(--ease); }
.nav-toggle span:first-child { top: 18px; }
.nav-toggle span:last-child { top: 25px; }
.nav-toggle[aria-expanded="true"] span:first-child { top: 21.5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { top: 21.5px; transform: rotate(-45deg); }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: 1rem 1.7rem; border-radius: 999px; font: 600 .97rem var(--font); letter-spacing: -.01em;
  cursor: pointer; border: 1px solid transparent; position: relative; overflow: hidden; isolation: isolate;
  transition: transform .5s var(--ease-out), box-shadow .4s, background .3s, color .3s, border-color .3s;
}
.btn > * { position: relative; z-index: 1; }
.btn-primary { background: var(--teal); color: #fff; box-shadow: 0 10px 30px -10px var(--accent-glow); }
.dark .btn-primary { background: var(--teal-bright); color: var(--midnight); }
.btn-primary::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(110deg, transparent 30%, rgba(255,255,255,.45) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .9s var(--ease);
}
.btn-primary:hover::before { transform: translateX(120%); }
.btn-primary:hover { box-shadow: 0 18px 40px -12px var(--accent-glow); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-ink); }
.btn .arrow { transition: transform .4s var(--ease); }
.btn:hover .arrow { transform: translateX(5px); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 100svh; display: grid; align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 7rem; overflow: hidden; isolation: isolate;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 3rem; }
.hero-title { font-size: clamp(2.8rem, 6.6vw, 5.9rem); font-weight: 600; letter-spacing: -.045em; line-height: .98; margin-bottom: 1.8rem; }
.hero-lead { font-size: clamp(1.05rem, 1.5vw, 1.28rem); color: var(--ink-soft); max-width: 34rem; margin-bottom: 2.6rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; }

.grad {
  background: linear-gradient(100deg, #2ED3C0 0%, #8FF5E8 30%, #0FA394 60%, #2ED3C0 100%);
  background-size: 250% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 6s linear infinite;
}
@keyframes shimmer { to { background-position: -250% 0; } }

/* Mots qui apparaissent un à un */
.split-word { display: inline-block; overflow: hidden; vertical-align: top; padding-bottom: .08em; margin-bottom: -.08em; }
.split-word > span { display: inline-block; transform: translateY(110%) rotate(4deg); opacity: 0; transition: transform 1.1s var(--ease-out), opacity .8s; transition-delay: var(--wd, 0s); }
.is-split.is-in .split-word > span { transform: none; opacity: 1; }

/* Aurore, halo souris, grain */
.aurora { position: absolute; inset: 0; z-index: -2; overflow: hidden; filter: blur(70px) saturate(140%); }
.aurora span { position: absolute; border-radius: 50%; mix-blend-mode: screen; opacity: .55; }
.aurora span:nth-child(1) { width: 55vmax; height: 55vmax; left: 45%; top: -20%; background: radial-gradient(circle, #0FA394, transparent 65%); animation: float1 18s ease-in-out infinite alternate; }
.aurora span:nth-child(2) { width: 45vmax; height: 45vmax; left: -15%; top: 40%; background: radial-gradient(circle, #1E3A70, transparent 65%); animation: float2 22s ease-in-out infinite alternate; opacity: .9; }
.aurora span:nth-child(3) { width: 30vmax; height: 30vmax; left: 30%; top: 55%; background: radial-gradient(circle, #2ED3C0, transparent 65%); animation: float3 16s ease-in-out infinite alternate; opacity: .25; }
.aurora--soft span { opacity: .3; }
@keyframes float1 { to { transform: translate(-12vw, 10vh) scale(1.15); } }
@keyframes float2 { to { transform: translate(15vw, -12vh) scale(.9); } }
@keyframes float3 { to { transform: translate(-10vw, -15vh) scale(1.3); } }

.spotlight {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(600px circle at var(--mx, 70%) var(--my, 40%), rgba(46, 211, 192, .12), transparent 60%);
  transition: background .2s;
}
.grain {
  position: absolute; inset: -50%; z-index: 0; pointer-events: none; opacity: .07; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0%, 100% { transform: translate(0, 0); } 20% { transform: translate(-3%, 2%); } 40% { transform: translate(2%, -3%); }
  60% { transform: translate(-2%, -1%); } 80% { transform: translate(3%, 3%); }
}

/* Grand emblème animé */
.hero-emblem { position: relative; perspective: 1000px; display: grid; place-items: center; }
.emblem-tilt { width: min(100%, 460px); transition: transform .8s var(--ease-out); transform-style: preserve-3d; will-change: transform; }
.emblem { width: 100%; overflow: visible; filter: drop-shadow(0 0 22px rgba(46, 211, 192, .35)); }
.emblem .halo { animation: breathe 5s ease-in-out infinite; transform-origin: 60px 64px; }
.emblem .orbit { fill: none; stroke: rgba(154, 168, 191, .35); stroke-width: .3; }
.emblem .o1 { stroke-dasharray: 1 3; animation: spin 60s linear infinite; transform-origin: 60px 64px; }
.emblem .o2 { stroke-dasharray: 10 6; stroke: rgba(46, 211, 192, .25); animation: spin 40s linear infinite reverse; transform-origin: 60px 64px; }
.emblem .sat-wrap { animation: spin 14s linear infinite; transform-origin: 60px 64px; }
.emblem .sat-wrap.rev { animation-duration: 22s; animation-direction: reverse; }
.emblem .sat { fill: #2ED3C0; filter: drop-shadow(0 0 3px #2ED3C0); }
.emblem .e-link { stroke: #2ED3C0; }
.emblem .e-arch { stroke: #F3F6FA; }
.emblem .e-hex { stroke: #2ED3C0; fill: rgba(46, 211, 192, .08); }
.emblem .e-dot { fill: #2ED3C0; }
.emblem .draw { stroke-dasharray: 1; stroke-dashoffset: 1; }
.js .emblem.is-in .draw { animation: draw 1.8s var(--ease-out) forwards; }
.js .emblem.is-in .e-arch { animation-delay: .1s; }
.js .emblem.is-in .e-link { animation-delay: .7s; }
.js .emblem.is-in .e-hex { animation-delay: 1.1s; }
.emblem .pop { transform-box: fill-box; transform-origin: center; transform: scale(0); }
.js .emblem.is-in .pop { animation: pop .7s var(--ease-out) forwards; }
.js .emblem.is-in .pop:nth-of-type(4) { animation-delay: 1.2s; }
.js .emblem.is-in .pop:nth-of-type(5) { animation-delay: 1.35s; }
.js .emblem.is-in .pop:nth-of-type(6) { animation-delay: 1.5s; }
.emblem .core { transform-box: fill-box; transform-origin: center; animation: corebeat 2.4s ease-in-out infinite 2s; }
.emblem .pulse { fill: none; stroke: #2ED3C0; stroke-width: .8; transform-box: fill-box; transform-origin: center; opacity: 0; animation: ripple 3s ease-out infinite 2s; }
.emblem .pulse:nth-child(2) { animation-delay: 3s; }
.emblem .pulse:nth-child(3) { animation-delay: 4s; }
.no-js .emblem .draw, .emblem.no-anim .draw { stroke-dashoffset: 0; }
.no-js .emblem .pop, .emblem.no-anim .pop { transform: none; }

@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pop { 60% { transform: scale(1.35); } to { transform: scale(1); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes breathe { 50% { transform: scale(1.08); opacity: .7; } }
@keyframes corebeat { 50% { transform: scale(1.5); } }
@keyframes ripple { 0% { opacity: .9; transform: scale(1); } 100% { opacity: 0; transform: scale(3.2); } }

.scroll-hint { position: absolute; left: 50%; bottom: 2.2rem; translate: -50% 0; width: 24px; height: 38px; border: 1.5px solid var(--line); border-radius: 12px; }
.scroll-hint span { position: absolute; left: 50%; top: 8px; width: 3px; height: 7px; margin-left: -1.5px; border-radius: 2px; background: var(--accent); animation: wheel 2s var(--ease) infinite; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

/* ---------- Bandeau défilant ---------- */
.marquee {
  overflow: hidden; background: var(--midnight); color: #F3F6FA; padding: 1.15rem 0;
  border-block: 1px solid rgba(243,246,250,.06);
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; align-items: center; gap: 2.4rem; width: max-content; animation: marquee 38s linear infinite; }
.marquee span { font-size: clamp(1.1rem, 2vw, 1.5rem); font-weight: 500; letter-spacing: -.02em; white-space: nowrap; opacity: .85; }
.marquee span:nth-of-type(3n) { color: #2ED3C0; }
.marquee i { width: 9px; height: 9px; flex: none; background: #2ED3C0; clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%); }
.marquee:hover .marquee-track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: clamp(5.5rem, 12vw, 10rem) 0; position: relative; overflow: hidden; }
.section-alt { background: var(--bg-alt); }
.section-head { margin-bottom: 3.2rem; }
.section-title { font-size: clamp(2.2rem, 4.8vw, 3.8rem); max-width: 16ch; }
.section-head .section-title { margin-bottom: 0; }
.grid-2 > div > .section-title { margin-bottom: 2rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.prose p { color: var(--ink-soft); font-size: 1.14rem; }
.prose strong { color: var(--ink); font-weight: 600; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; margin: 3rem 0 0; padding-top: 2.2rem; border-top: 1px solid var(--line); }
.stats dt { font-size: clamp(2.4rem, 4vw, 3.4rem); font-weight: 600; letter-spacing: -.05em; line-height: 1; margin-bottom: .6rem; color: var(--ink); font-variant-numeric: tabular-nums; }
.stats dt small { font-size: .5em; margin-left: .1em; color: var(--accent-ink); }
.stats dd { margin: 0; color: var(--muted); font-size: .9rem; }

/* ---------- Projets ---------- */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
.project {
  --mx: 50%; --my: 50%;
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  overflow: hidden; display: flex; flex-direction: column; isolation: isolate;
  transition: transform .7s var(--ease-out), box-shadow .6s var(--ease), border-color .4s;
  transform-style: preserve-3d; will-change: transform;
}
.project::before {   /* bordure lumineuse qui suit la souris */
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; z-index: 2; pointer-events: none;
  background: radial-gradient(380px circle at var(--mx) var(--my), var(--teal-bright), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .4s;
}
.project-glow {
  position: absolute; inset: 0; z-index: 1; pointer-events: none; opacity: 0; transition: opacity .4s;
  background: radial-gradient(500px circle at var(--mx) var(--my), rgba(46,211,192,.10), transparent 40%);
}
.project:hover::before, .project:hover .project-glow { opacity: 1; }
.project:hover { box-shadow: var(--shadow); }

.project-visual { aspect-ratio: 16 / 9; display: grid; place-items: center; padding: 2rem; position: relative; overflow: hidden; }

/* Constella : nuit profonde, aurore opale, rayons dorés, étoiles */
.project-visual--constella { background: radial-gradient(70% 90% at 50% 42%, #040D21 0 30%, #0A1A3D 70%, #050B1C 100%); isolation: isolate; }
.cs-aurora {
  position: absolute; inset: -40%; z-index: 0; opacity: .55; filter: blur(40px);
  background: conic-gradient(from 0deg at 50% 50%, #2ED3C0, #7B6CF6, #F2C76B, #59C3F5, #E79AD8, #2ED3C0);
  -webkit-mask: radial-gradient(circle at 50% 50%, transparent 0 17%, #000 24%, transparent 46%);
  mask: radial-gradient(circle at 50% 50%, transparent 0 17%, #000 24%, transparent 46%);
  animation: spin 24s linear infinite;
}
.cs-rays {
  position: absolute; inset: -30%; z-index: 0; opacity: .5;
  background: repeating-conic-gradient(from 0deg at 50% 50%, rgba(242, 199, 107, .22) 0 2deg, transparent 2deg 22.5deg);
  -webkit-mask: radial-gradient(circle at 50% 50%, #000 0 8%, transparent 42%);
  mask: radial-gradient(circle at 50% 50%, #000 0 8%, transparent 42%);
  animation: spin 60s linear infinite reverse;
}
.cs-sky { position: absolute; inset: 0; width: 100% !important; height: 100%; z-index: 0; }
.cs-stars circle { fill: #F5E6C4; animation: twinkle 3.4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.cs-stars circle:nth-child(3n) { animation-delay: 1.1s; fill: #BFF3EC; }
.cs-stars circle:nth-child(3n+1) { animation-delay: 2.2s; }
.cs-lines polyline { fill: none; stroke: rgba(242, 199, 107, .45); stroke-width: .5; stroke-dasharray: 1; stroke-dashoffset: 1; }
.project.is-visible .cs-lines polyline { animation: draw 2.6s var(--ease-out) .4s forwards; }
.project.is-visible .cs-lines polyline:nth-child(2) { animation-delay: 1s; }
.project.is-visible .cs-lines polyline:nth-child(3) { animation-delay: 1.6s; }
.project-visual--constella, .project-visual--trip { padding: 1.2rem; }
.cs-brand { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: .4rem; width: 100%; height: 100%; min-height: 0; justify-content: center; }
.cs-orb { flex: 1 1 0; min-height: 0; max-height: 230px; aspect-ratio: 1; position: relative; display: grid; place-items: center; }
.cs-orb::before { /* léger voile nuit derrière la bulle de verre */
  content: ""; position: absolute; inset: -14%; border-radius: 50%; z-index: -1;
  background: radial-gradient(circle, rgba(4, 13, 33, .7) 0 38%, rgba(4, 13, 33, .35) 52%, transparent 70%);
}
.cs-logo {
  width: 100%; height: 100%; object-fit: contain;
  filter: drop-shadow(0 0 28px rgba(89, 195, 245, .35)) drop-shadow(0 0 60px rgba(242, 199, 107, .18));
  animation: floaty 6s ease-in-out infinite; transition: transform 1s var(--ease-out);
}
.cs-word {
  font-size: clamp(1rem, 2.2vw, 1.45rem); font-weight: 300; letter-spacing: .55em; text-transform: uppercase;
  margin-right: -.55em; /* compense l'interlettrage pour un centrage optique */
  background: linear-gradient(100deg, #C9933F 0%, #F7DE9C 25%, #FFF6DD 40%, #E6B862 55%, #BFF3EC 75%, #C9933F 100%);
  background-size: 250% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 7s linear infinite; filter: drop-shadow(0 2px 10px rgba(242, 199, 107, .25));
}
.project:hover .cs-logo { transform: scale(1.06) rotate(-4deg); }

/* Trip n Try : ivoire, vagues marine et bronze inspirées du symbole, route en pointillés */
.project-visual--trip { background: radial-gradient(130% 120% at 50% 0%, #FFFDF8 0%, #F4ECDF 70%); isolation: isolate; }
.tt-waves { position: absolute; inset: 0; width: 100% !important; height: 100%; z-index: 0; }
.tt-w1 { fill: #061C42; opacity: .9; animation: wave 9s ease-in-out infinite alternate; }
.tt-w2 { fill: #B88249; opacity: .95; animation: wave 7s ease-in-out infinite alternate-reverse; }
.tt-w3 { fill: #B88249; opacity: .12; animation: wave 11s ease-in-out infinite alternate; }
.tt-road { fill: none; stroke: #E9C48E; stroke-width: 1.1; stroke-linecap: round; stroke-dasharray: .012 .018; opacity: .8; animation: road 14s linear infinite; }
.tt-glow {
  position: absolute; z-index: 0; width: 60%; aspect-ratio: 1; left: 20%; top: -5%; border-radius: 50%;
  background: radial-gradient(circle, rgba(184, 130, 73, .22), transparent 65%); filter: blur(10px);
  animation: breathe 6s ease-in-out infinite;
}
.tt-logo {
  position: relative; z-index: 1; width: auto; height: 62%; max-height: 210px; margin-top: -6%;
  filter: drop-shadow(0 10px 22px rgba(6, 28, 66, .18)); transition: transform 1s var(--ease-out);
}
.project:hover .tt-logo { transform: scale(1.05); }
.project-visual--constella .cs-logo, .project-visual--trip .tt-logo { max-width: none; }
@keyframes floaty { 50% { transform: translateY(-6px); } }
@keyframes wave { to { transform: translateX(-14px) translateY(4px); } }
@keyframes road { to { stroke-dashoffset: -1; } }
@keyframes twinkle { 50% { opacity: .3; transform: scale(.65); } }
@keyframes route { to { stroke-dashoffset: -80; } }

.project-body { padding: 2rem 2.1rem 2.3rem; display: flex; flex-direction: column; flex: 1; }
.project-body > * { position: relative; z-index: 3; }
.project { cursor: pointer; }
/* Toute la carte est cliquable : le lien s'étend sur la carte entière */
.project-body > .project-link { position: static; }
.project-link::after { content: ""; position: absolute; inset: 0; z-index: 5; border-radius: inherit; }
.project:has(.project-link:focus-visible) { outline: 2px solid var(--accent); outline-offset: 4px; }
.project-link:focus-visible { outline: none; }
.project-tag { font-size: .72rem; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; color: var(--accent-ink); margin-bottom: .7rem; }
.project h3 { font-size: 2.1rem; margin-bottom: .9rem; }
.project-body > p:not(.project-tag) { color: var(--ink-soft); flex: 1; }
.project-link { display: inline-flex; gap: .4rem; align-items: center; font-weight: 600; margin-top: .6rem; align-self: flex-start; }
.project-link span { transition: transform .4s var(--ease); }
.project:hover .project-link { color: var(--accent-ink); }
.project:hover .project-link span[aria-hidden] { transform: translate(4px, -4px); }

/* ---------- Approche ---------- */
.section-approach .watermark {
  position: absolute; right: -8vw; top: 50%; width: min(55vw, 640px); z-index: -1; pointer-events: none;
  --e-ink: var(--ink); --e-teal: var(--accent); opacity: .05;
  transform: translateY(-50%) rotate(var(--rot, 0deg));
}
.pillars { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.pillars li {
  padding: 2.2rem 2rem 1.6rem; position: relative; border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--surface) 70%, transparent); border: 1px solid var(--line);
  backdrop-filter: blur(6px); transition: transform .6s var(--ease-out), border-color .4s, box-shadow .5s;
}
.pillars li:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); box-shadow: var(--shadow); }
.pillars li::after {
  content: ""; position: absolute; top: -1px; left: 2rem; right: 2rem; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--teal), var(--teal-bright)); transform: scaleX(0); transform-origin: left;
  transition: transform 1.2s var(--ease-out) .3s;
}
.pillars li.is-visible::after { transform: scaleX(1); }
.pillar-icon { display: block; width: 48px; height: 48px; margin-bottom: 1.6rem; }
.pillar-icon svg { width: 100%; height: 100%; overflow: visible; }
.pillar-icon * { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pillar-icon circle:first-child, .pillar-icon .inner, .pillar-icon path + circle { fill: var(--accent); stroke: none; }
.pillar-icon .ring { stroke-dasharray: 3 5; animation: spin 14s linear infinite; transform-origin: 24px 24px; }
.pillars li:hover .pillar-icon svg { animation: wiggle .8s var(--ease-out); }
@keyframes wiggle { 30% { transform: rotate(-8deg) scale(1.08); } 60% { transform: rotate(5deg); } }
.pillar-num { position: absolute; top: 2.2rem; right: 2rem; font-size: .85rem; font-weight: 600; color: var(--muted); font-variant-numeric: tabular-nums; }
.pillars h3 { font-size: 1.6rem; margin-bottom: .8rem; }
.pillars p { color: var(--ink-soft); margin: 0; }

/* ---------- Contact ---------- */
.section-contact { isolation: isolate; }
.contact-points { list-style: none; padding: 0; margin: 2.2rem 0 0; display: grid; gap: .9rem; color: var(--ink-soft); }
.contact-points li { display: flex; align-items: center; gap: .8rem; }
.cp-dot { width: 10px; height: 10px; flex: none; background: var(--accent); clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%); }

.contact-form {
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.6rem); box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(140%); -webkit-backdrop-filter: blur(18px) saturate(140%);
}
.contact-form::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(140deg, rgba(46,211,192,.6), transparent 35%, transparent 65%, rgba(46,211,192,.3));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.field { margin-bottom: 1.3rem; position: relative; }
.field label { display: block; font-size: .85rem; font-weight: 500; margin-bottom: .45rem; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink);
  background: rgba(255,255,255,.04); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .9rem 1rem; transition: border-color .25s, box-shadow .25s, background .25s;
  appearance: none; -webkit-appearance: none;
}
.field select option { color: #0F1B33; background: #fff; }
.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%239AA8BF' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 1rem center; padding-right: 2.5rem;
}
.field textarea { resize: vertical; min-height: 150px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); background: rgba(46,211,192,.05);
  box-shadow: 0 0 0 4px rgba(46, 211, 192, .15);
}
.field.has-error input, .field.has-error textarea { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: .82rem; margin: .35rem 0 0; }
.field-error:empty { display: none; }
.field-hint { position: absolute; right: .2rem; top: 0; margin: 0; font-size: .75rem; color: var(--muted); }

.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }

.consent { display: flex; gap: .7rem; align-items: flex-start; font-size: .88rem; color: var(--ink-soft); margin: .4rem 0 1.6rem; cursor: pointer; }
.consent input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--accent); flex-shrink: 0; }

.btn-submit { width: 100%; }
.btn-submit .spinner { display: none; width: 18px; height: 18px; border: 2px solid currentColor; border-right-color: transparent; border-radius: 50%; animation: spin .7s linear infinite; }
.btn-submit.is-loading { pointer-events: none; opacity: .85; }
.btn-submit.is-loading .spinner { display: inline-block; }

.form-status { margin: 1rem 0 0; font-size: .93rem; text-align: center; min-height: 1.4em; }
.form-status.is-success { color: var(--success); }
.form-status.is-error { color: var(--danger); }
.turnstile:not(:empty) { margin: 0 0 1.2rem; display: flex; justify-content: center; }

/* ---------- Pied de page ---------- */
.site-footer { padding: 4.5rem 0 2rem; position: relative; overflow: hidden; border-top: 1px solid var(--line); }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; }
.footer-logo svg { height: 64px; width: auto; }
.footer-logo .logo-word { fill: var(--e-ink); }
.footer-logo .logo-slogan { fill: var(--muted); }
.footer-logo .logo-slogan-dot { fill: var(--e-teal); }
.footer-nav { display: flex; gap: 1.8rem; flex-wrap: wrap; color: var(--ink-soft); font-weight: 500; }
.footer-nav a:hover { color: var(--accent); }
.footer-giant {
  margin: 3rem 0 2.2rem; font-size: clamp(4rem, 17vw, 15rem); font-weight: 700; letter-spacing: -.06em; line-height: .8;
  color: transparent; -webkit-text-stroke: 1px rgba(154, 168, 191, .18);
  background: linear-gradient(180deg, rgba(46,211,192,.18), transparent 80%);
  -webkit-background-clip: text; background-clip: text; text-align: center; user-select: none;
}
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; font-size: .88rem; color: var(--muted); padding-top: 1.6rem; border-top: 1px solid var(--line); }
.footer-bottom p { margin: 0; }
.footer-bottom nav { display: flex; gap: 1.6rem; }
.footer-bottom a:hover { color: var(--ink); }

/* ---------- Pages simples (mentions légales, 404) ---------- */
.legal { padding: calc(var(--header-h) + 4rem) 0 6rem; max-width: 760px; }
.legal h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); margin-bottom: 2rem; }
.legal h2 { font-size: 1.35rem; margin: 2.4rem 0 .8rem; letter-spacing: -.02em; }
.legal p, .legal li { color: var(--ink-soft); }
.legal a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 3px; }
.legal a.btn { text-decoration: none; color: #fff; }
.page-center { min-height: 100svh; display: flex; flex-direction: column; justify-content: center; }

/* ---------- Apparitions au défilement ---------- */
.js .reveal { opacity: 0; transform: translateY(32px); filter: blur(6px); transition: opacity 1.1s var(--ease-out), transform 1.1s var(--ease-out), filter 1.1s var(--ease-out); transition-delay: var(--d, 0s); }
.js .reveal.is-visible { opacity: 1; transform: none; filter: none; }
.js .project.reveal.is-visible { transition: opacity 1.1s var(--ease-out), transform .7s var(--ease-out), filter 1.1s var(--ease-out), box-shadow .6s, border-color .4s; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-emblem { order: -1; }
  .emblem-tilt { width: min(56vw, 260px); }
  .hero { padding-top: calc(var(--header-h) + 1.5rem); }
  .grid-2, .projects { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; z-index: 2; }
  .nav {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: 2rem;
    font-size: 2rem; font-weight: 600; letter-spacing: -.03em; background: #0B1428; color: #F3F6FA;
    opacity: 0; visibility: hidden; transition: opacity .4s var(--ease), visibility .4s;
  }
  .nav a { opacity: 0; transform: translateY(16px); transition: opacity .5s, transform .6s var(--ease-out); }
  .nav.is-open { opacity: 1; visibility: visible; }
  .nav.is-open a { opacity: 1; transform: none; }
  .nav.is-open a:nth-child(2) { transition-delay: .05s; }
  .nav.is-open a:nth-child(3) { transition-delay: .1s; }
  .nav.is-open a:nth-child(4) { transition-delay: .15s; }
  .nav-cta { font-size: 1.1rem; }
  .nav-cta:hover { color: #0B1428; }
  body.menu-open .site-header { color: #F3F6FA; --e-ink: #F3F6FA; --e-teal: #2ED3C0; }
  .logo { height: 26px; }
  .header-left { gap: .75rem; }
  .brand-family { gap: .45rem; }
  .brand-sep { height: 20px; }
  .fam { width: 26px; height: 26px; }
  .fam img { width: 22px; height: 22px; }
  .fam::after { display: none; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .stats { gap: 1rem; }
  .scroll-hint { display: none; }
  .footer-logo svg { height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; filter: none; }
  .emblem .draw { stroke-dashoffset: 0; }
  .emblem .pop { transform: none; }
  .split-word > span { transform: none; opacity: 1; }
  .cs-lines polyline { stroke-dashoffset: 0; }
}