/* ============================================================
   GYCLOUDATA — design tokens (brand palette from logo)
   ============================================================ */
:root{
  --navy:       #080D16;
  --navy-2:     #0E1730;
  --navy-soft:  #121C33;
  --ink:        #10131C;
  --ink-soft:   #4B5468;
  --paper:      #F7F8FC;
  --paper-dim:  #ECEFF8;
  --line:       #DEE2ED;
  --line-dark:  #C7CCDC;
  --mute:       #8891A6;

  --violet:     #6B33D6;
  --blue:       #2F6FE4;
  --cyan:       #22B8E8;
  --grad:       linear-gradient(135deg, var(--violet) 0%, var(--blue) 55%, var(--cyan) 100%);
  --grad-text:  linear-gradient(100deg, #A98BF0, #5F9CF7 45%, #4FD5F5 90%);

  --serif: "Fraunces", Georgia, serif;
  --mono:  "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1240px;
  --gutter: clamp(20px, 5vw, 64px);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
h1,h2,h3{ font-family:var(--serif); font-weight:560; letter-spacing:-0.01em; color:var(--ink); }

.grain{
  position:fixed; inset:0; z-index:5; pointer-events:none;
  opacity:0.035; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.scroll-progress{
  position:fixed; top:0; left:0; height:3px; width:0%;
  background:var(--grad); z-index:110;
  transition:width .1s linear;
}

.back-to-top{
  position:fixed; right:24px; bottom:24px; z-index:90;
  width:44px; height:44px; border-radius:50%;
  background:var(--ink); color:#fff; border:1px solid rgba(255,255,255,0.15);
  display:flex; align-items:center; justify-content:center;
  font-size:16px; cursor:pointer;
  opacity:0; pointer-events:none; transform:translateY(10px);
  transition:opacity .25s ease, transform .25s ease, background .25s ease;
}
.back-to-top.is-visible{ opacity:1; pointer-events:auto; transform:translateY(0); }
.back-to-top:hover{ background:var(--blue); }

.skip-link{
  position:absolute; left:16px; top:-60px; z-index:1000;
  background:var(--ink); color:#fff; padding:10px 16px;
  font-family:var(--mono); font-size:12.5px; letter-spacing:0.04em;
  border-radius:4px; transition:top .2s ease;
}
.skip-link:focus{ top:16px; }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, [tabindex]:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}

.eyebrow{
  font-family:var(--mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:14px;
  display:inline-flex; align-items:center; gap:8px;
}
.eyebrow::before{ content:""; width:14px; height:1px; background:var(--cyan); display:inline-block; }

.text-grad{
  background:var(--grad-text);
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* ============================================================
   Custom cursor (desktop / fine pointer only)
   ============================================================ */
@media (hover:hover) and (pointer:fine){
  body.has-cursor, body.has-cursor a, body.has-cursor button{ cursor:none; }
  .cursor-dot, .cursor-ring{
    position:fixed; top:0; left:0; pointer-events:none; z-index:999;
    border-radius:50%; transform:translate(-50%,-50%);
  }
  .cursor-dot{ width:6px; height:6px; background:var(--cyan); }
  .cursor-ring{
    width:38px; height:38px; border:1px solid rgba(34,184,232,0.55);
    transition:width .2s ease, height .2s ease, border-color .2s ease, background .2s ease;
  }
  .cursor-ring.is-hover{
    width:64px; height:64px; background:rgba(34,184,232,0.1); border-color:var(--cyan);
  }
  .cursor-ring.is-hover::after{
    content:"VOIR"; position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
    font-family:var(--mono); font-size:9px; letter-spacing:0.08em; color:var(--cyan);
  }
}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:13px; font-weight:500;
  letter-spacing:0.03em; text-transform:uppercase;
  padding:13px 22px;
  border:1px solid var(--ink);
  transition:background .25s ease, color .25s ease, border-color .25s ease, transform .2s ease;
  cursor:pointer; background:none; will-change:transform;
}
.btn span{ transition:transform .25s ease; }
.btn:hover span{ transform:translateX(3px); }
.btn--solid{ background:var(--ink); color:#fff; }
.btn--solid:hover{ background:var(--blue); border-color:var(--blue); }
.btn--grad{ border:none; color:#fff; background:var(--grad); background-size:160% 160%; }
.btn--grad:hover{ background-position:80% 20%; }
.btn--line{ border-color:var(--line-dark); }
.btn--line:hover{ background:var(--ink); color:#fff; }
.btn--line-invert{ border-color:rgba(255,255,255,0.35); color:#fff; }
.btn--line-invert:hover{ background:#fff; color:var(--navy); border-color:#fff; }
.btn--text{ border-color:transparent; padding-left:4px; }
.btn--text:hover{ color:var(--blue); }
.btn--full{ width:100%; justify-content:center; margin-top:6px; }

/* ============================================================
   Nav
   ============================================================ */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:100;
  border-bottom:1px solid transparent;
  transition:background .3s ease, border-color .3s ease;
}
.nav.is-scrolled{
  background:rgba(247,248,252,0.9);
  backdrop-filter:blur(10px);
  border-bottom-color:var(--line);
}
body.has-dark-hero .nav:not(.is-scrolled){ --nav-fg:#fff; }
.nav__inner{
  max-width:var(--container); margin:0 auto; padding:18px var(--gutter);
  display:flex; align-items:center; justify-content:space-between; gap:24px;
  color:var(--nav-fg, var(--ink));
}
.logo{ display:inline-flex; align-items:center; gap:10px; font-family:var(--mono); font-size:14px; font-weight:600; letter-spacing:0.02em; white-space:nowrap; color:inherit; }
.logo img{ height:28px; width:auto; }
.nav__links{ display:flex; gap:28px; font-family:var(--mono); font-size:12.5px; letter-spacing:0.03em; }
.nav__links a{ display:inline-flex; gap:6px; align-items:baseline; color:inherit; opacity:0.82; transition:opacity .2s ease; position:relative; }
.nav__links a span{ opacity:0.55; font-size:10px; }
.nav__links a:hover, .nav__links a.is-active{ opacity:1; }
.nav__links a.is-active::after{ content:""; position:absolute; left:0; right:0; bottom:-6px; height:1px; background:var(--cyan); }
.nav__meta{ display:flex; align-items:center; gap:18px; }
.lang-toggle{
  font-family:var(--mono); font-size:12px; letter-spacing:0.05em;
  background:none; border:none; color:inherit; opacity:0.6; cursor:pointer;
}
.lang-toggle .is-active{ opacity:1; font-weight:600; }
.nav__meta .btn{ border-color:currentColor; color:inherit; }
.nav__meta .btn:hover{ background:var(--blue); border-color:var(--blue); color:#fff; }
.nav__burger{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; }
.nav__burger span{ width:20px; height:1.5px; background:currentColor; color:inherit; }

/* ============================================================
   Hero (home — full) + Page header (subpages — compact)
   ============================================================ */
.hero, .pagehead{
  position:relative; overflow:hidden; background:var(--navy); color:#fff; isolation:isolate;
}
.hero::before, .pagehead::before{
  content:""; position:absolute; inset:0; z-index:-2;
  background:
    radial-gradient(46% 60% at 18% 20%, rgba(107,51,214,0.55), transparent 70%),
    radial-gradient(50% 55% at 85% 15%, rgba(34,184,232,0.4), transparent 70%),
    radial-gradient(60% 60% at 60% 90%, rgba(47,111,228,0.45), transparent 70%),
    var(--navy);
  animation:aurora 22s ease-in-out infinite alternate;
  background-size:140% 140%;
}
.hero::after, .pagehead::after{
  content:""; position:absolute; inset:0; z-index:-1; opacity:0.5;
  background-image:radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1px);
  background-size:26px 26px;
  mask-image:radial-gradient(60% 60% at 50% 40%, black, transparent 90%);
}
@keyframes aurora{
  0%{ background-position:0% 0%; }
  50%{ background-position:60% 40%; }
  100%{ background-position:20% 80%; }
}
.hero__photo, .pagehead__photo{
  position:absolute; inset:0; z-index:-3; opacity:0.28;
  background-size:cover; background-position:center;
  filter:saturate(0.5) contrast(1.05);
}

.hero{ padding:150px var(--gutter) 0; }
.hero__grid{
  max-width:var(--container); margin:0 auto;
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:48px; align-items:center;
}
.hero__title{
  font-size:clamp(38px, 5vw, 64px);
  line-height:1.05;
  margin-bottom:26px;
  overflow:hidden;
  color:#fff;
}
.hero__title .line{ display:block; overflow:hidden; }
.hero__title .line span{ display:block; animation:riseIn .8s cubic-bezier(.2,.7,.2,1) both; }
.hero__title .line:nth-child(2) span{ animation-delay:.1s; }
@keyframes riseIn{ from{ transform:translateY(105%); } to{ transform:translateY(0); } }
.hero__lead{ max-width:46ch; color:#C7CEE0; font-size:17px; line-height:1.65; margin-bottom:36px; opacity:0; animation:fadeUp .8s ease .35s both; }
.hero__cta{ display:flex; align-items:center; gap:16px; flex-wrap:wrap; opacity:0; animation:fadeUp .8s ease .5s both; }
@keyframes fadeUp{ from{ opacity:0; transform:translateY(14px); } to{ opacity:1; transform:translateY(0); } }

.hero__diagram{
  position:relative; color:rgba(255,255,255,0.75); opacity:0; animation:fadeUp 1s ease .3s both;
  background:linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  border:1px solid rgba(255,255,255,0.14);
  border-radius:22px;
  padding:28px 26px 18px;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:0 30px 70px -30px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.08);
}
.hero__diagram[data-diagram-rotator]{ cursor:pointer; }
.hero__diagram[data-diagram-rotator]:focus-visible{
  outline:2px solid var(--cyan); outline-offset:5px;
}
.hero__diagram[data-parallax]{ transition:transform .15s ease-out; }
.diagram__stage{
  display:grid;
  perspective:1200px;
  transform-style:preserve-3d;
}
.diagram__face{
  grid-area:1 / 1;
  min-width:0;
  margin:0;
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden;
  transform-style:preserve-3d;
  transition:transform .9s cubic-bezier(.2,.72,.2,1), opacity .55s ease;
}
.diagram__face--front{ transform:rotateY(0deg); }
.diagram__face--back{ transform:rotateY(-180deg); opacity:0; }
.hero__diagram.is-flipped .diagram__face--front{ transform:rotateY(180deg); opacity:0; }
.hero__diagram.is-flipped .diagram__face--back{ transform:rotateY(0deg); opacity:1; }
.topology, .diagram__visual{ display:block; width:100%; height:auto; }
.diagram__timer{
  height:2px; margin:11px auto 0; width:76px; overflow:hidden;
  border-radius:99px; background:rgba(255,255,255,0.13);
}
.diagram__timer-progress{
  display:block; width:100%; height:100%; transform:scaleX(0); transform-origin:left;
  border-radius:inherit; background:linear-gradient(90deg, var(--violet), var(--cyan));
}
.diagram__timer-progress.is-running{ animation:diagramTimer 13.5s linear forwards; }
@keyframes diagramTimer{ to{ transform:scaleX(1); } }
.topology__nodes .pulse{ animation:pulse 2.4s ease-out infinite; transform-origin:260px 240px; }
@keyframes pulse{ 0%{ r:11; opacity:0.9; } 100%{ r:40; opacity:0; } }
.diagram__caption{
  font-family:var(--mono); font-size:11px; font-weight:500; letter-spacing:0.075em; color:rgba(255,255,255,0.72);
  text-align:center; margin-top:14px; padding-top:14px; border-top:1px solid rgba(255,255,255,0.1);
}

@media (prefers-reduced-motion:reduce){
  .diagram__face{ transition:none; }
  .diagram__timer{ display:none; }
}

.marquee{ margin-top:80px; border-top:1px solid rgba(255,255,255,0.14); overflow:hidden; padding:16px 0; position:relative; z-index:1; }
.marquee__track{
  display:flex; gap:14px; white-space:nowrap; width:max-content;
  font-family:var(--mono); font-size:12.5px; letter-spacing:0.06em; color:rgba(255,255,255,0.45);
  animation:scroll 46s linear infinite;
}
.marquee__track span:nth-child(odd){ color:rgba(255,255,255,0.85); }
.marquee__item{ display:inline-flex; align-items:center; gap:7px; }
.marquee__icon{
  display:inline-block; width:14px; height:14px; flex:none;
  background-color:currentColor;
  mask-image:var(--logo); -webkit-mask-image:var(--logo);
  mask-repeat:no-repeat; -webkit-mask-repeat:no-repeat;
  mask-position:center; -webkit-mask-position:center;
  mask-size:contain; -webkit-mask-size:contain;
}
@keyframes scroll{ from{ transform:translateX(0); } to{ transform:translateX(-50%); } }

/* Compact page header for subpages */
.pagehead{ padding:150px var(--gutter) 72px; }
.pagehead__inner{ max-width:var(--container); margin:0 auto; position:relative; z-index:1; }
.pagehead h1{ font-size:clamp(32px, 4.4vw, 50px); color:#fff; line-height:1.1; max-width:18ch; }
.pagehead--wide h1{ max-width:34ch; font-size:clamp(26px, 3.4vw, 42px); }
.pagehead p{ color:#C7CEE0; max-width:56ch; margin-top:16px; font-size:16px; line-height:1.6; }
.breadcrumb{ font-family:var(--mono); font-size:11.5px; color:rgba(255,255,255,0.5); margin-bottom:20px; letter-spacing:0.04em; }
.breadcrumb a:hover{ color:var(--cyan); }

/* ============================================================
   Section head (shared)
   ============================================================ */
.section-head{ max-width:640px; margin-bottom:56px; }
.section-head h2{ font-size:clamp(28px, 3.4vw, 40px); line-height:1.12; }
.section-head--split{ display:flex; justify-content:space-between; align-items:flex-end; gap:24px; max-width:none; flex-wrap:wrap; }

section{ padding:120px var(--gutter); max-width:var(--container); margin:0 auto; }
section.tight{ padding-top:0; }

/* Full-bleed sections: background spans the viewport edge-to-edge;
   only their inner content wrapper is capped to --container width. */
.hero, .pagehead, .contact, .about{ max-width:none; margin-left:0; margin-right:0; }

/* ============================================================
   Expertise index list
   ============================================================ */
.index-list{ border-top:1px solid var(--ink); }
.index-row{
  display:grid; grid-template-columns:64px 260px 1fr 32px;
  align-items:center; gap:24px;
  padding:26px 4px; border-bottom:1px solid var(--line);
  transition:background .25s ease, padding-left .25s ease;
  position:relative; color:inherit;
}
a.index-row{ cursor:pointer; }
.index-row:hover{ background:var(--paper-dim); padding-left:16px; }
.index-row__num{ font-family:var(--mono); font-size:13px; color:var(--mute); }
.index-row__title{ font-family:var(--serif); font-size:22px; font-weight:440; }
.index-row__desc{ color:var(--ink-soft); font-size:14.5px; max-width:52ch; }
.index-row__arrow{ font-family:var(--mono); color:var(--blue); text-align:right; opacity:0; transform:translateX(-6px); transition:all .25s ease; }
.index-row:hover .index-row__arrow{ opacity:1; transform:translateX(0); }

/* Detail blocks used on activites.html */
.discipline{
  display:grid; grid-template-columns:120px 1fr; gap:32px;
  padding:48px 0; border-bottom:1px solid var(--line);
}
.discipline:first-child{ border-top:1px solid var(--ink); }
.discipline__marker{ display:flex; flex-direction:column; gap:16px; align-items:flex-start; }
.discipline__icon{ width:30px; height:30px; color:var(--blue); }
.discipline__num{ font-family:var(--mono); font-size:15px; color:var(--mute); }
.discipline h3{ font-size:26px; margin-bottom:12px; }
.discipline p{ color:var(--ink-soft); max-width:62ch; line-height:1.65; margin-bottom:16px; }
.discipline__group{ margin-top:22px; }
.discipline .discipline__label{
  max-width:none; margin-bottom:9px; color:var(--ink); font-family:var(--mono);
  font-size:10.5px; font-weight:600; letter-spacing:0.1em; line-height:1.4; text-transform:uppercase;
}
.discipline__tags{ display:flex; flex-wrap:wrap; gap:8px; }
.discipline__tags span{ font-family:var(--mono); font-size:11px; letter-spacing:0.04em; color:var(--blue); border:1px solid var(--line-dark); padding:5px 10px; }
.discipline__tags .llm-chip{ display:inline-flex; align-items:center; gap:7px; padding:6px 10px 6px 8px; }
.llm-chip i{
  width:16px; height:16px; flex:none; display:block; background-color:currentColor;
  mask:var(--logo) center/contain no-repeat; -webkit-mask:var(--logo) center/contain no-repeat;
}
.discipline__tags--use-cases span{ color:var(--ink-soft); background:var(--paper-dim); }

/* ============================================================
   About
   ============================================================ */
.about{ background:var(--paper-dim); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.about__grid{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:64px; max-width:var(--container); margin:0 auto; }
.about h2{ margin-bottom:22px; }
.about__lead{ color:var(--ink-soft); font-size:16px; line-height:1.7; max-width:52ch; }
.about__specs{ display:grid; grid-template-columns:1fr 1fr; gap:1px; background:var(--line); border:1px solid var(--line); }
.spec{ background:var(--paper-dim); padding:28px; }
.spec__icon{ width:26px; height:26px; color:var(--blue); margin-bottom:18px; }
.spec__title{ font-family:var(--mono); font-size:13px; font-weight:600; letter-spacing:0.02em; margin-bottom:8px; }
.spec__desc{ font-size:13.5px; color:var(--ink-soft); line-height:1.5; }

.photo-frame{ position:relative; border:1px solid var(--line-dark); }
.photo-frame img{ width:100%; height:100%; object-fit:cover; filter:saturate(0.85); }
.photo-frame::after{
  content:""; position:absolute; inset:0; mix-blend-mode:multiply;
  background:linear-gradient(160deg, rgba(107,51,214,0.35), rgba(34,184,232,0.25));
}
.photo-frame__tag{
  position:absolute; bottom:14px; left:14px; z-index:1;
  font-family:var(--mono); font-size:10.5px; letter-spacing:0.06em; color:#fff;
  background:rgba(8,13,22,0.55); backdrop-filter:blur(4px); padding:6px 10px;
}

/* ============================================================
   Partners
   ============================================================ */
.partners__grid{ display:grid; grid-template-columns:repeat(4, 1fr); border-top:1px solid var(--ink); border-left:1px solid var(--line); }
.partner{
  border-right:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:22px 20px; display:flex; align-items:center; gap:12px;
  font-family:var(--mono); font-size:13.5px; color:var(--ink-soft);
  transition:background .2s ease, color .2s ease;
}
.partner:hover{ background:var(--ink); color:#fff; }
.partner--ai{ background:linear-gradient(135deg, rgba(47,111,228,0.055), rgba(34,184,232,0.075)); }
.partner--ai .partner__icon{ width:25px; height:25px; }
.partner__icon{
  width:22px; height:22px; flex:none;
  background-color:var(--ink-soft);
  mask-image:var(--logo); -webkit-mask-image:var(--logo);
  mask-repeat:no-repeat; -webkit-mask-repeat:no-repeat;
  mask-position:center; -webkit-mask-position:center;
  mask-size:contain; -webkit-mask-size:contain;
  transition:background-color .2s ease;
}
.partner:hover .partner__icon{ background-color:#fff; }

/* ============================================================
   Use cases / dossiers
   ============================================================ */
.dossiers{ display:grid; grid-template-columns:repeat(3, 1fr); gap:1px; background:var(--line); border:1px solid var(--line); }
.dossier{ background:var(--paper); padding:32px 28px 28px; display:flex; flex-direction:column; gap:14px; }
.dossier__tab{ font-family:var(--mono); font-size:10.5px; letter-spacing:0.08em; color:var(--blue); border:1px solid var(--blue); display:inline-block; padding:4px 8px; width:fit-content; }
.dossier h3{ font-size:20px; line-height:1.25; }
.dossier p{ font-size:14.5px; color:var(--ink-soft); line-height:1.6; }
.dossier__stack{ margin-top:auto; font-family:var(--mono); font-size:11.5px; color:var(--mute); padding-top:14px; border-top:1px dashed var(--line); }

/* Category overview grid at top of cas-utilisation.html / use-cases.html */
.case-overview{
  display:grid; grid-template-columns:repeat(4, 1fr);
  border-top:1px solid var(--ink); border-left:1px solid var(--line);
  margin-bottom:16px;
}
.case-overview a{
  display:block; border-right:1px solid var(--line); border-bottom:1px solid var(--line);
  padding:22px 20px; color:var(--ink); transition:background .2s ease, color .2s ease;
}
.case-overview a:hover{ background:var(--ink); color:#fff; }
.case-overview__num{ font-family:var(--mono); font-size:11px; color:var(--mute); display:block; margin-bottom:10px; transition:color .2s ease; }
.case-overview a:hover .case-overview__num{ color:rgba(255,255,255,0.5); }
.case-overview__name{ font-family:var(--serif); font-size:19px; display:block; margin-bottom:6px; line-height:1.2; }
.case-overview__count{ font-family:var(--mono); font-size:11px; color:var(--blue); transition:color .2s ease; }
.case-overview a:hover .case-overview__count{ color:var(--cyan); }

/* Case-study category index (cas-utilisation.html / use-cases.html) */
.case-category{ padding:40px 0; border-bottom:1px solid var(--line); }
.case-category:first-child{ border-top:1px solid var(--ink); }
.case-category__head{ display:flex; align-items:baseline; gap:16px; margin-bottom:20px; }
.case-category__num{ font-family:var(--mono); font-size:13px; color:var(--mute); }
.case-category__head h3{ font-size:24px; }
.case-category__count{ font-family:var(--mono); font-size:11px; color:var(--mute); margin-left:auto; }
.case-category__grid{
  display:grid; grid-template-columns:repeat(auto-fill, minmax(240px, 1fr)); gap:18px;
}
.case-card{
  display:flex; flex-direction:column;
  background:var(--paper); border:1px solid var(--line);
  color:var(--ink); overflow:hidden;
  transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.case-card:hover{
  transform:translateY(-4px);
  box-shadow:0 20px 36px -20px rgba(10,15,25,0.35);
  border-color:var(--ink);
}
.case-card__media{ aspect-ratio:16/10; overflow:hidden; background:#fff; border-bottom:1px solid var(--line); }
.case-card__media img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .5s ease; }
.case-card:hover .case-card__media img{ transform:scale(1.06); }
.case-card__body{
  padding:16px 18px; display:flex; align-items:flex-start; justify-content:space-between; gap:12px; flex:1;
}
.case-card__title{ font-size:14.5px; line-height:1.45; }
.case-card__arrow{ font-family:var(--mono); font-size:12px; color:var(--blue); flex:none; margin-top:2px; transition:transform .25s ease, color .25s ease; }
.case-card:hover .case-card__arrow{ color:var(--cyan); transform:translateX(3px); }

/* Case-study detail article (cases/*.html) */
.case-detail{ max-width:760px; margin:0 auto; }
.case-detail h2{ font-size:26px; margin-top:52px; margin-bottom:16px; }
.case-detail h2:first-child{ margin-top:0; }
.case-detail h3{
  font-family:var(--mono); font-size:12.5px; text-transform:uppercase; letter-spacing:0.06em;
  color:var(--blue); margin-top:32px; margin-bottom:12px;
}
.case-detail p{ color:var(--ink-soft); line-height:1.7; margin-bottom:16px; }
.case-detail ul{ margin:0 0 16px 0; padding-left:0; }
.case-detail li{ color:var(--ink-soft); line-height:1.65; padding-left:22px; position:relative; margin-bottom:9px; }
.case-detail li::before{ content:"—"; position:absolute; left:0; color:var(--blue); }
.case-detail li ul{ margin-top:9px; }
.case-detail strong{ color:var(--ink); font-weight:600; }
.case-detail figure{ margin:36px 0; border:1px solid var(--line-dark); background:var(--paper-dim); padding:14px; }
.case-detail figure img{ width:100%; display:block; }
.case-detail figcaption{ font-family:var(--mono); font-size:11px; color:var(--mute); margin-top:12px; text-align:center; }
.case-meta{ display:flex; flex-wrap:wrap; gap:10px; margin:24px 0 4px; }
.case-meta span{ font-family:var(--mono); font-size:11px; color:var(--blue); border:1px solid var(--line-dark); padding:5px 10px; }

/* Full case study block on cas-utilisation.html */
.case{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; padding:64px 0; border-bottom:1px solid var(--line); }
.case:nth-child(even) .case__media{ order:2; }
.case__media{ position:relative; aspect-ratio:4/3; overflow:hidden; border:1px solid var(--line-dark); }
.case__media img{ width:100%; height:100%; object-fit:cover; }
.case__media::after{ content:""; position:absolute; inset:0; mix-blend-mode:multiply; background:linear-gradient(160deg, rgba(47,111,228,0.35), rgba(34,184,232,0.2)); }
.case__tag{ font-family:var(--mono); font-size:10.5px; letter-spacing:0.08em; color:var(--blue); margin-bottom:12px; display:block; }
.case h3{ font-size:26px; margin-bottom:14px; }
.case p{ color:var(--ink-soft); line-height:1.65; margin-bottom:16px; }
.case__stack{ display:flex; flex-wrap:wrap; gap:8px; }
.case__stack span{ font-family:var(--mono); font-size:11px; color:var(--ink-soft); border:1px solid var(--line-dark); padding:5px 10px; }

/* ============================================================
   Contact
   ============================================================ */
.contact{ background:var(--navy); color:#fff; position:relative; overflow:hidden; }
.contact .eyebrow{ color:var(--cyan); }
.contact .eyebrow::before{ background:var(--cyan); }
.contact h2{ color:#fff; }
.contact__grid{ display:grid; grid-template-columns:0.9fr 1.1fr; gap:64px; position:relative; z-index:1; max-width:var(--container); margin:0 auto; }
.contact__lead{ color:#C7CEE0; max-width:44ch; margin-top:18px; font-size:15.5px; line-height:1.6; }
.contact__meta{ margin-top:44px; display:grid; gap:20px; }
.contact__meta dt{ font-family:var(--mono); font-size:11px; letter-spacing:0.06em; color:var(--mute); text-transform:uppercase; }
.contact__meta dd{ font-size:15px; margin-top:4px; }

.contact__form{ display:grid; gap:20px; }
.field{ display:grid; gap:8px; }
.field label{ font-family:var(--mono); font-size:11.5px; letter-spacing:0.05em; text-transform:uppercase; color:#9AA3BE; }
.field input, .field textarea{
  background:transparent; border:none; border-bottom:1px solid #2B3550;
  color:#fff; font-family:var(--sans); font-size:15px; padding:8px 2px;
  transition:border-color .2s ease;
}
.field input:focus, .field textarea:focus{ outline:none; border-color:var(--cyan); }
.contact .btn--grad{ margin-top:4px; }
.form__note{ font-family:var(--mono); font-size:12px; color:var(--cyan); min-height:16px; }

/* ============================================================
   Footer
   ============================================================ */
.footer{ padding:64px var(--gutter) 32px; max-width:var(--container); margin:0 auto; }
.footer__grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; padding-bottom:40px; border-bottom:1px solid var(--line); }
.footer__brand p{ margin-top:14px; color:var(--ink-soft); font-size:13.5px; max-width:32ch; }
.footer__label{ font-family:var(--mono); font-size:11px; letter-spacing:0.06em; text-transform:uppercase; color:var(--mute); margin-bottom:14px; }
.footer__col{ display:flex; flex-direction:column; gap:10px; font-size:14px; color:var(--ink-soft); }
.footer__col a:hover{ color:var(--blue); }
.footer__bottom{ padding-top:24px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; font-family:var(--mono); font-size:11.5px; color:var(--mute); }

/* ============================================================
   Reveal-on-scroll
   ============================================================ */
[data-reveal]{ opacity:0; transform:translateY(16px); transition:opacity .6s ease, transform .6s ease; }
[data-reveal].is-visible{ opacity:1; transform:translateY(0); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:980px){
  .nav__links{
    position:fixed; top:0; right:0; height:100vh; width:min(78vw, 320px);
    background:var(--paper); color:var(--ink); border-left:1px solid var(--line);
    flex-direction:column; justify-content:center; gap:28px; padding:0 40px;
    transform:translateX(100%); transition:transform .3s ease;
    display:flex; z-index:150;
  }
  .nav__links.is-open{ transform:translateX(0); }
  .nav__links a{ font-size:15px; }
  .nav__meta .btn--line, .nav__meta .btn--line-invert{ display:none; }
  .nav__burger{ display:flex; z-index:160; }
  .nav__burger.is-open span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
  .nav__burger.is-open span:nth-child(2){ opacity:0; }
  .nav__burger.is-open span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }
  .hero__grid{ grid-template-columns:1fr; }
  .hero__diagram{ order:-1; max-width:340px; margin:0 auto 24px; }
  .about__grid, .contact__grid, .discipline, .case{ grid-template-columns:1fr; }
  .case:nth-child(even) .case__media{ order:0; }
  .about__specs{ grid-template-columns:1fr 1fr; }
  .dossiers{ grid-template-columns:1fr; }
  .partners__grid{ grid-template-columns:repeat(2, 1fr); }
  .case-overview{ grid-template-columns:repeat(2, 1fr); }
  .footer__grid{ grid-template-columns:1fr; }
  .index-row{ grid-template-columns:40px 1fr 24px; row-gap:6px; }
  .index-row__desc{ grid-column:2 / 3; }
}
@media (max-width:560px){
  .hero{ padding-top:130px; }
  .pagehead{ padding-top:130px; }
  section{ padding:80px var(--gutter); }
  .partners__grid{ grid-template-columns:1fr 1fr; }
}