/* =========================================================
   MANE Océanographie & Environnement
   Direction artistique « Profondeur & Lumière »
   ========================================================= */

:root{
  /* Abysses & profondeur */
  --abyss:     #021624;
  --abyss-2:   #042a45;
  --deep:      #003a5c;
  --ocean:     #0070b0;
  --teal:      #00a8e0;
  --glow:      #5fd0f5;
  --aqua:      #7fe3ff;
  --ice:       #e9f6fd;
  --foam:      #f2f9fd;

  /* Marque */
  --mane-red:  #c8102e;
  --mane-red-2:#a30d26;

  /* Neutres */
  --ink:       #0c1f2b;
  --slate:     #41555f;
  --muted:     #7591a0;
  --line:      #d8e8f1;
  --white:     #ffffff;

  --maxw: 1200px;
  --radius: 20px;
  --radius-sm: 12px;
  --shadow-xs: 0 2px 12px -6px rgba(2,22,36,.4);
  --shadow-sm: 0 14px 34px -18px rgba(2,42,69,.45);
  --shadow:    0 28px 60px -28px rgba(2,42,69,.5);
  --shadow-lg: 0 50px 90px -40px rgba(2,22,36,.6);
  --glow-shadow: 0 0 0 1px rgba(95,208,245,.25), 0 18px 50px -20px rgba(0,168,224,.5);

  --font-display: "Fraunces", Georgia, serif;
  --font-cond: "Barlow Condensed", "Arial Narrow", sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);

  --h1: clamp(2.5rem, 1.4rem + 4.6vw, 4.6rem);
  --h2: clamp(2rem, 1.35rem + 2.7vw, 3.1rem);
  --h3: clamp(1.35rem, 1.05rem + 1.1vw, 1.75rem);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; scroll-padding-top:90px; -webkit-text-size-adjust:100%; }
body{
  font-family:var(--font-body); color:var(--ink); background:var(--white);
  line-height:1.7; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
::selection{ background:var(--teal); color:#fff; }

.container{ width:100%; max-width:var(--maxw); margin:0 auto; padding:0 clamp(18px,4vw,32px); }

h1,h2,h3{ font-family:var(--font-display); line-height:1.05; font-weight:500; color:var(--deep); letter-spacing:-.015em; }
h4{ font-family:var(--font-cond); font-weight:700; letter-spacing:.2px; color:var(--deep); }
h1{ font-size:var(--h1); }
h2{ font-size:var(--h2); }
h3{ font-size:var(--h3); }
h4{ font-size:1.3rem; }

.eyebrow{
  display:inline-block; font-family:var(--font-cond); text-transform:uppercase;
  letter-spacing:3px; font-weight:600; font-size:.92rem; color:var(--ocean);
  margin-bottom:.9rem; position:relative; padding-left:36px;
}
.eyebrow::before{ content:""; position:absolute; left:0; top:50%; width:26px; height:2px; background:var(--teal); transform:translateY(-50%); }
.eyebrow-light{ color:var(--glow); }
.eyebrow-light::before{ background:var(--glow); box-shadow:0 0 10px var(--glow); }

/* =========================================================
   PRELOADER
   ========================================================= */
#preloader{
  position:fixed; inset:0; z-index:9999;
  background:radial-gradient(130% 130% at 50% 30%,#06304d 0%,#021624 80%);
  display:flex; align-items:center; justify-content:center;
  transition:opacity .7s var(--ease), visibility .7s var(--ease);
}
#preloader.done{ opacity:0; visibility:hidden; }
.preloader-inner{ display:flex; flex-direction:column; align-items:center; gap:18px; }
.preloader-logo-wrap{ position:relative; width:min(320px,66vw); filter:drop-shadow(0 0 30px rgba(0,168,224,.4)); }
.preloader-logo-base{ opacity:.18; filter:grayscale(1) brightness(2); }
.preloader-water{ position:absolute; left:0; bottom:0; width:100%; height:0; overflow:hidden; animation:waterRise 2.1s var(--ease) forwards; }
.preloader-logo-fill{ position:absolute; left:0; bottom:0; width:100%; }
@keyframes waterRise{ 0%{height:0} 100%{height:100%} }
.preloader-water::before{
  content:""; position:absolute; top:-6px; left:0; width:100%; height:10px;
  background:radial-gradient(circle at 20% 0,transparent 6px,var(--glow) 7px) repeat-x;
  background-size:18px 12px; opacity:.6; animation:ripple 1s linear infinite;
}
@keyframes ripple{ to{ background-position:18px 0 } }
.preloader-tag{ font-family:var(--font-cond); text-transform:uppercase; letter-spacing:5px; font-size:.8rem; color:var(--glow); opacity:0; animation:fadeUp .6s ease .5s forwards; }
@keyframes fadeUp{ from{opacity:0;transform:translateY(8px)} to{opacity:.85;transform:none} }
@media (prefers-reduced-motion:reduce){ .preloader-water{ animation:none; height:100% } .preloader-water::before,.preloader-tag{ animation:none; opacity:.85 } }

#scroll-progress{ position:fixed; top:0; left:0; height:3px; width:0; background:linear-gradient(90deg,var(--glow),var(--mane-red)); z-index:1000; transition:width .1s linear; box-shadow:0 0 12px rgba(95,208,245,.6); }

/* =========================================================
   HEADER
   ========================================================= */
#header{ position:fixed; top:0; left:0; right:0; z-index:900; transition:background .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s var(--ease); }
#header.scrolled{ background:rgba(4,26,42,.82); backdrop-filter:blur(16px) saturate(1.4); box-shadow:0 10px 40px -22px rgba(0,0,0,.8); }
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:80px; transition:height .3s var(--ease); }
#header.scrolled .header-inner{ height:66px; }
.brand img{ height:48px; width:auto; transition:height .3s var(--ease); filter:drop-shadow(0 2px 10px rgba(0,0,0,.45)); }
#header.scrolled .brand img{ height:40px; }

#nav-list{ list-style:none; display:flex; align-items:center; gap:clamp(16px,2vw,30px); }
#nav-list a{ font-family:var(--font-cond); font-weight:600; font-size:1.1rem; letter-spacing:.4px; color:#fff; position:relative; text-shadow:0 1px 8px rgba(0,0,0,.4); transition:color .2s; }
#nav-list a:not(.nav-cta):hover{ color:var(--glow); }
#nav-list a:not(.nav-cta)::after{ content:""; position:absolute; left:0; bottom:-6px; height:2px; width:0; background:var(--glow); transition:width .25s var(--ease); box-shadow:0 0 8px var(--glow); }
#nav-list a:not(.nav-cta):hover::after{ width:100%; }
.nav-cta{ background:var(--mane-red); color:#fff !important; text-shadow:none !important; padding:9px 22px; border-radius:30px; box-shadow:0 8px 22px -10px rgba(200,16,46,.8); transition:background .2s, transform .2s, box-shadow .2s; }
.nav-cta:hover{ background:var(--mane-red-2); transform:translateY(-2px); }

#nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px; z-index:2; }
#nav-toggle span{ width:26px; height:2px; background:#fff; border-radius:2px; transition:.3s var(--ease); box-shadow:0 1px 4px rgba(0,0,0,.4); }
#nav-toggle.open span{ background:var(--deep); box-shadow:none; }
#nav-toggle.open span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
#nav-toggle.open span:nth-child(2){ opacity:0; }
#nav-toggle.open span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* =========================================================
   BOUTONS
   ========================================================= */
.btn{ display:inline-flex; align-items:center; gap:10px; font-family:var(--font-cond); font-weight:600; font-size:1.14rem; letter-spacing:.4px; padding:14px 32px; border-radius:34px; cursor:pointer; border:2px solid transparent; transition:transform .25s var(--ease), background .25s, color .25s, box-shadow .25s, border-color .25s; }
.btn svg{ width:19px; height:19px; transition:transform .25s var(--ease); }
.btn:hover svg{ transform:translateX(4px); }
.btn-primary{ background:var(--mane-red); color:#fff; box-shadow:0 14px 32px -14px rgba(200,16,46,.8); }
.btn-primary:hover{ background:var(--mane-red-2); transform:translateY(-2px); box-shadow:0 20px 40px -14px rgba(200,16,46,.9); }
.btn-ghost{ background:rgba(95,208,245,.08); color:#fff; border-color:rgba(127,227,255,.5); backdrop-filter:blur(4px); }
.btn-ghost:hover{ background:rgba(95,208,245,.18); border-color:var(--glow); transform:translateY(-2px); box-shadow:var(--glow-shadow); }
.btn-block{ width:100%; justify-content:center; }

/* =========================================================
   HERO — profondeur océanique
   ========================================================= */
.hero{ position:relative; min-height:100svh; display:flex; align-items:center; padding:150px 0 210px; overflow:hidden; color:#fff; background:var(--abyss); }
.hero-depth{ position:absolute; inset:0; z-index:-1; overflow:hidden; }
.depth-layer{ position:absolute; inset:0; }
.depth-1{ background:linear-gradient(180deg,#063e62 0%, #042a45 45%, #021624 100%); }
.depth-2{ background:radial-gradient(120% 90% at 70% -10%, rgba(0,168,224,.5), transparent 55%), radial-gradient(90% 70% at 10% 110%, rgba(0,112,176,.4), transparent 60%); mix-blend-mode:screen; }
/* caustiques lumineuses */
.caustics{
  position:absolute; inset:-20%;
  background:
    radial-gradient(circle at 20% 30%, rgba(127,227,255,.10), transparent 8%),
    radial-gradient(circle at 70% 60%, rgba(127,227,255,.08), transparent 9%),
    radial-gradient(circle at 45% 80%, rgba(127,227,255,.07), transparent 7%),
    radial-gradient(circle at 85% 20%, rgba(127,227,255,.09), transparent 8%);
  filter:blur(2px); animation:causticsMove 20s ease-in-out infinite alternate; opacity:.8;
}
@keyframes causticsMove{ from{transform:translate3d(0,0,0) scale(1)} to{transform:translate3d(-30px,24px,0) scale(1.08)} }
/* rais de lumière */
.lightbeam{ position:absolute; top:-30%; width:240px; height:160%; background:linear-gradient(180deg, rgba(127,227,255,.18), transparent 70%); filter:blur(8px); transform-origin:top center; }
.beam-1{ left:18%; transform:rotate(14deg); animation:beamSway 12s ease-in-out infinite alternate; }
.beam-2{ left:62%; transform:rotate(-10deg); opacity:.7; animation:beamSway 9s ease-in-out infinite alternate-reverse; }
@keyframes beamSway{ from{transform:rotate(10deg) translateX(0)} to{transform:rotate(18deg) translateX(30px)} }
/* particules (plancton) */
.particles{ position:absolute; inset:0; }
.particles span{ position:absolute; width:4px; height:4px; border-radius:50%; background:rgba(180,240,255,.6); box-shadow:0 0 8px rgba(127,227,255,.8); animation:floatUp linear infinite; }
@keyframes floatUp{ 0%{ transform:translateY(20px); opacity:0 } 10%{opacity:.8} 90%{opacity:.8} 100%{ transform:translateY(-110vh); opacity:0 } }

.hero-content{ position:relative; z-index:2; max-width:880px; }
.hero-title{ color:#fff; margin-bottom:1.4rem; font-weight:400; }
.hero-title .line{ display:block; opacity:0; transform:translateY(24px); animation:lineIn .9s var(--ease) forwards; }
.hero-title .line:nth-child(1){ animation-delay:.15s; }
.hero-title .line:nth-child(2){ animation-delay:.3s; }
.hero-title .line.accent{ animation-delay:.45s; font-style:italic; font-weight:500; background:linear-gradient(100deg,#fff 30%,var(--aqua)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.hero-title .line.accent::after{ content:""; display:block; width:96px; height:4px; margin-top:.6rem; background:linear-gradient(90deg,var(--glow),var(--mane-red)); border-radius:3px; box-shadow:0 0 16px rgba(95,208,245,.6); }
@keyframes lineIn{ to{opacity:1;transform:none} }
.hero-lead{ font-size:clamp(1.05rem,.95rem + .5vw,1.25rem); color:rgba(231,246,253,.92); max-width:660px; margin-bottom:2.2rem; opacity:0; animation:lineIn .9s var(--ease) .6s forwards; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:3.2rem; opacity:0; animation:lineIn .9s var(--ease) .75s forwards; }
.hero-trust{ border-top:1px solid rgba(127,227,255,.18); padding-top:1.5rem; opacity:0; animation:lineIn .9s var(--ease) .9s forwards; }
.hero-trust-label{ display:block; text-align:center; font-family:var(--font-cond); font-size:.85rem; text-transform:uppercase; letter-spacing:2.5px; color:rgba(127,227,255,.7); margin-bottom:1rem; }
.hero-trust-logos{ display:flex; flex-wrap:wrap; gap:18px; align-items:center; justify-content:center; }
.hero-trust-logos img{ height:68px; width:auto; max-width:210px; object-fit:contain; background:#fff; border-radius:11px; padding:11px 18px; filter:grayscale(.15); opacity:.94; transition:transform .2s, opacity .2s, box-shadow .2s; }
.hero-trust-logos img:hover{ transform:translateY(-3px); opacity:1; filter:none; box-shadow:0 0 0 1px rgba(95,208,245,.4); }

.hero-waves{ position:absolute; left:0; right:0; bottom:-1px; z-index:1; line-height:0; }
.hero-waves svg{ width:100%; height:clamp(110px,15vw,200px); display:block; }
.wave{ animation:waveShift 12s ease-in-out infinite alternate; }
.wave-1{ fill:rgba(233,246,253,.3); animation-duration:13s; }
.wave-2{ fill:rgba(233,246,253,.5); animation-duration:9s; }
.wave-3{ fill:#ffffff; animation-duration:7s; }
@keyframes waveShift{ from{transform:translateX(0)} to{transform:translateX(-44px)} }

.hero-scroll{ position:absolute; left:50%; bottom:42px; transform:translateX(-50%); z-index:3; width:26px; height:44px; border:2px solid rgba(127,227,255,.5); border-radius:14px; display:flex; justify-content:center; padding-top:7px; }
.hero-scroll-dot{ width:5px; height:8px; border-radius:3px; background:var(--glow); box-shadow:0 0 8px var(--glow); animation:scrollDot 1.6s var(--ease) infinite; }
@keyframes scrollDot{ 0%{opacity:0;transform:translateY(0)} 40%{opacity:1} 80%{opacity:0;transform:translateY(14px)} 100%{opacity:0} }
@media (prefers-reduced-motion:reduce){ .wave,.caustics,.lightbeam,.hero-scroll-dot,.particles span{ animation:none } .hero-title .line,.hero-lead,.hero-actions,.hero-trust{ opacity:1; transform:none; animation:none } }

/* =========================================================
   BANDEAU RÉFÉRENCE
   ========================================================= */
.ref-band{ background:var(--mane-red); color:#fff; padding:16px 0; overflow:hidden; position:relative; z-index:2; }
.ref-marquee{ width:100%; overflow:hidden; }
.ref-track{ display:inline-flex; align-items:center; gap:26px; white-space:nowrap; animation:marquee 34s linear infinite; }
.ref-track span{ font-family:var(--font-cond); font-size:1.12rem; letter-spacing:.4px; font-weight:600; }
.ref-dot{ color:rgba(255,255,255,.55); font-size:.65rem; }
@keyframes marquee{ from{transform:translateX(0)} to{transform:translateX(-50%)} }
.ref-band:hover .ref-track{ animation-play-state:paused; }
@media (prefers-reduced-motion:reduce){ .ref-track{ animation:none; gap:32px; padding-left:20px } }

/* =========================================================
   SECTIONS
   ========================================================= */
.section{ padding:clamp(64px,9vw,116px) 0; position:relative; }
.section-tint{ background:var(--foam); }
.section-deep{ background:linear-gradient(165deg,#042a45 0%, #003a5c 55%, #024a73 100%); color:#fff; position:relative; overflow:hidden; }
.section-deep::before{ content:""; position:absolute; inset:0; background:url("../img/deco/bathymetry.svg") center/cover no-repeat; opacity:.5; mix-blend-mode:screen; pointer-events:none; }
.section-deep .container{ position:relative; z-index:2; }
.section-deep h2{ color:#fff; }
.section-deep .section-sub{ color:rgba(233,246,253,.85); }
.deep-waves{ position:absolute; left:0; right:0; bottom:100%; height:60px; line-height:0; pointer-events:none; z-index:1; }
.deep-waves svg{ width:100%; height:60px; }
.deep-waves .wave{ fill:#042a45; opacity:.55; }
.section-head{ max-width:780px; margin-bottom:clamp(2.4rem,5vw,3.6rem); }
.section-head-center{ max-width:680px; margin-left:auto; margin-right:auto; text-align:center; }
.section-head-center .eyebrow{ padding-left:0; }
.section-head-center .eyebrow::before{ display:none; }
.section-sub{ color:var(--slate); font-size:1.12rem; margin-top:1rem; }

/* =========================================================
   EXPERTISE
   ========================================================= */
.expertise-grid{ display:grid; grid-template-columns:1.45fr 1fr; gap:clamp(36px,5vw,64px); align-items:start; }
.expertise-text p{ color:var(--slate); margin-bottom:1.2rem; font-size:1.06rem; }
.expertise-text .lead-para{ font-size:1.2rem; color:var(--ink); line-height:1.6; }
.expertise-text strong{ color:var(--ocean); font-weight:700; }
.expertise-origin{ background:linear-gradient(135deg,var(--ice),#fff); border-radius:var(--radius); padding:26px 28px; margin-top:.4rem; position:relative; overflow:hidden; box-shadow:var(--shadow-sm); border:1px solid var(--line); }
.expertise-origin::before{ content:""; position:absolute; right:-30px; top:-30px; width:120px; height:120px; background:radial-gradient(circle,var(--glow),transparent 70%); opacity:.3; }
.expertise-origin p{ margin:0; color:var(--slate); position:relative; }
.origin-mark{ display:block; font-family:var(--font-cond); text-transform:uppercase; letter-spacing:1.5px; color:var(--ocean); font-weight:700; margin-bottom:.5rem; font-size:.98rem; }
.expertise-stats{ display:grid; grid-template-columns:1fr 1fr; gap:18px; position:sticky; top:100px; }
.stat{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:28px 24px; box-shadow:var(--shadow-sm); transition:transform .25s var(--ease), box-shadow .25s; position:relative; overflow:hidden; }
.stat::after{ content:""; position:absolute; left:0; bottom:0; width:100%; height:3px; background:linear-gradient(90deg,var(--teal),var(--ocean)); transform:scaleX(0); transform-origin:left; transition:transform .4s var(--ease); }
.stat:hover{ transform:translateY(-4px); box-shadow:var(--shadow); }
.stat:hover::after{ transform:scaleX(1); }
.stat-num{ display:block; font-family:var(--font-display); font-weight:500; font-size:3rem; color:var(--ocean); line-height:1; }
.stat-label{ display:block; margin-top:.6rem; font-size:.92rem; color:var(--muted); }

/* =========================================================
   MÉTIERS
   ========================================================= */
.metiers-grid{ display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.metier-card{ background:#fff; border-radius:var(--radius); padding:clamp(28px,4vw,44px); box-shadow:var(--shadow); border:1px solid var(--line); position:relative; overflow:hidden; transition:transform .3s var(--ease), box-shadow .3s; }
.metier-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lg); }
.metier-icon{ width:66px; height:66px; border-radius:20px; display:flex; align-items:center; justify-content:center; background:linear-gradient(140deg,var(--teal),var(--ocean)); color:#fff; margin-bottom:22px; box-shadow:0 14px 28px -14px rgba(0,168,224,.9); }
.metier-icon svg{ width:33px; height:33px; }
.metier-card h3{ margin-bottom:.8rem; }
.metier-card p{ color:var(--slate); }
.metier-line{ position:absolute; left:0; bottom:0; height:4px; width:0; background:linear-gradient(90deg,var(--teal),var(--mane-red)); transition:width .4s var(--ease); }
.metier-card:hover .metier-line{ width:100%; }

/* =========================================================
   DOMAINES
   ========================================================= */
.domain-block{ margin-bottom:clamp(40px,6vw,64px); }
.domain-block:last-child{ margin-bottom:0; }
.domain-block-head{ display:flex; align-items:center; gap:20px; margin-bottom:28px; }
.domain-block-num{ font-family:var(--font-display); font-weight:500; font-size:clamp(2rem,4vw,3.1rem); line-height:1; background:linear-gradient(135deg,var(--teal),var(--ocean)); -webkit-background-clip:text; background-clip:text; color:transparent; flex:none; }
.domain-block-head h3{ color:var(--deep); }
.domain-cards{ display:grid; grid-template-columns:repeat(auto-fit,minmax(290px,1fr)); gap:24px; }
.domain-card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:30px 28px; box-shadow:var(--shadow-sm); position:relative; overflow:hidden; transition:transform .3s var(--ease), box-shadow .3s, border-color .3s; display:flex; flex-direction:column; }
.domain-card::before{ content:""; position:absolute; top:0; left:0; right:0; height:4px; background:linear-gradient(90deg,var(--teal),var(--ocean)); transform:scaleX(0); transform-origin:left; transition:transform .35s var(--ease); }
.domain-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow); border-color:var(--glow); }
.domain-card:hover::before{ transform:scaleX(1); }
.domain-tag{ display:inline-block; align-self:flex-start; font-family:var(--font-cond); font-size:.78rem; font-weight:600; text-transform:uppercase; letter-spacing:1.4px; color:var(--ocean); background:var(--ice); padding:6px 13px; border-radius:30px; margin-bottom:15px; }
.domain-card h4{ color:var(--deep); margin-bottom:.7rem; font-size:1.32rem; }
.domain-card p{ color:var(--slate); font-size:.99rem; margin-bottom:.8rem; }
.domain-ref{ font-size:.89rem !important; color:var(--muted) !important; border-top:1px solid var(--line); padding-top:.9rem; margin-top:auto; }
.domain-ref strong{ color:var(--ocean); }
.domain-ref em{ color:var(--slate); font-style:normal; font-weight:600; }

/* =========================================================
   GALERIE AU SURVOL (pôle 01)
   ========================================================= */
.domain-block-gallery{ position:relative; }
.gallery-hint{ color:var(--muted); font-size:.95rem; font-style:italic; margin:-8px 0 22px; display:flex; align-items:center; gap:8px; }
.gallery-hint::before{ content:""; width:18px; height:18px; flex:none; background:no-repeat center/contain url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300a8e0' stroke-width='1.8'%3E%3Cpath d='M2 12s3.5-7 10-7 10 7 10 7-3.5 7-10 7-10-7-10-7z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E"); }

/* Panneaux overlay latéraux */
.gallery-stage{ position:relative; }
.gallery-cards{ position:relative; z-index:2; transition:opacity .4s var(--ease); }
/* léger estompage des cartes non actives quand un panneau est ouvert */
.gallery-stage.is-open .domain-card[data-project]:not(.is-active){ opacity:.55; }
.domain-card[data-project]{ transition:transform .3s var(--ease), box-shadow .3s, border-color .3s, opacity .35s; }

.gallery-panel{
  position:absolute; top:-10px; z-index:30;
  width:clamp(320px,40vw,520px);
  background:rgba(255,255,255,.97); backdrop-filter:blur(6px);
  border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow-lg);
  padding:22px;
  display:flex; flex-direction:column; gap:16px;
  opacity:0; visibility:hidden; pointer-events:none;
  transition:opacity .4s var(--ease), transform .45s var(--ease), visibility .4s;
}
.gallery-panel-left{ left:-22px; transform:translateX(-30px) scale(.98); transform-origin:left center; }
.gallery-panel-right{ right:-22px; transform:translateX(30px) scale(.98); transform-origin:right center; }
.gallery-stage.show-left .gallery-panel-left,
.gallery-stage.show-right .gallery-panel-right{
  opacity:1; visibility:visible; pointer-events:auto; transform:translateX(0) scale(1);
}

/* Projet CENTRAL : les panneaux s'écartent pour ne jamais recouvrir la carte du milieu.
   Ils se calent au-dessus des cartes latérales (≈ 1/3 chacune). */
.gallery-stage.is-mid .gallery-panel{ width:min(31.5%, 400px); }
.gallery-stage.is-mid .gallery-panel-left{ left:-10px; }
.gallery-stage.is-mid .gallery-panel-right{ right:-10px; }

.gallery-panel-title{
  font-family:var(--font-cond); text-transform:uppercase; letter-spacing:1.4px;
  font-size:.92rem; color:var(--ocean); display:flex; align-items:center; gap:10px;
  padding-bottom:12px; border-bottom:1px solid var(--line); padding-right:34px;
}
.gallery-panel-title::before{ content:""; width:22px; height:2px; background:var(--teal); flex:none; }

/* bouton fermer : masqué par défaut, visible quand épinglé */
.gallery-close{
  position:absolute; top:14px; right:14px; z-index:2; width:30px; height:30px; border-radius:50%;
  border:1px solid var(--line); background:#fff; color:var(--ocean); cursor:pointer;
  display:none; align-items:center; justify-content:center; transition:background .2s, color .2s, transform .2s;
}
.gallery-close svg{ width:16px; height:16px; }
.gallery-close:hover{ background:var(--mane-red); color:#fff; border-color:var(--mane-red); transform:rotate(90deg); }
.gallery-stage.is-pinned-open .gallery-panel.is-visible .gallery-close{ display:flex; }

.gallery-panel .gallery-set{ display:none; flex-direction:column; gap:14px; }
.gallery-panel .gallery-set.active{ display:flex; }

.gallery-fig{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-sm); overflow:hidden;
  box-shadow:var(--shadow-sm); opacity:0; transform:translateY(14px);
}
.gallery-panel.is-visible .gallery-set.active .gallery-fig{ animation:figIn .5s var(--ease) forwards; }
.gallery-set.active .gallery-fig:nth-child(1){ animation-delay:.05s }
.gallery-set.active .gallery-fig:nth-child(2){ animation-delay:.13s }
.gallery-set.active .gallery-fig:nth-child(3){ animation-delay:.21s }
.gallery-set.active .gallery-fig:nth-child(4){ animation-delay:.29s }
@keyframes figIn{ to{ opacity:1; transform:none } }
.gallery-fig img{ width:100%; height:auto; display:block; background:#04263c; }
.gallery-fig figcaption{
  font-size:.82rem; line-height:1.4; color:var(--slate); padding:10px 14px 10px 32px;
  border-top:1px solid var(--line); background:linear-gradient(180deg,#fff,#f3fafe); position:relative;
}
.gallery-fig figcaption::before{
  content:""; position:absolute; left:13px; top:50%; transform:translateY(-50%);
  width:9px; height:9px; border-radius:50%; background:linear-gradient(135deg,var(--teal),var(--ocean));
}

/* surbrillance carte active */
.domain-card[data-project].is-active{ transform:translateY(-4px); box-shadow:var(--shadow); border-color:var(--glow); z-index:3; }
.domain-card[data-project].is-active::before{ transform:scaleX(1); }
.domain-card-cue{ display:block; margin-top:14px; font-family:var(--font-cond); font-weight:600; letter-spacing:.5px; font-size:.92rem; color:var(--ocean); opacity:.55; transition:opacity .3s, color .3s; }
.domain-card[data-project]:hover .domain-card-cue{ opacity:1; color:var(--teal); }

@media (prefers-reduced-motion:reduce){
  .gallery-panel{ transition:none } .gallery-set.active .gallery-fig{ animation:none; opacity:1; transform:none }
}
/* Tablette/mobile : le panneau devient pleine largeur sous les cartes */
@media (max-width:900px){
  .gallery-panel{
    position:static; width:auto; transform:none !important; box-shadow:var(--shadow);
    margin-top:18px; opacity:1; visibility:visible;
  }
  .gallery-panel:not(.is-visible){ display:none; }
  .gallery-stage.is-open .domain-card[data-project]:not(.is-active){ opacity:1; }
}


/* =========================================================
   ENVIRONNEMENT
   ========================================================= */
.env-grid{ display:grid; grid-template-columns:1fr 1fr; gap:28px; }
.env-card{ background:rgba(255,255,255,.07); border:1px solid rgba(127,227,255,.2); border-radius:var(--radius); padding:clamp(28px,4vw,40px); backdrop-filter:blur(8px); transition:transform .3s var(--ease), background .3s, box-shadow .3s; }
.env-card:hover{ transform:translateY(-5px); background:rgba(255,255,255,.1); box-shadow:var(--glow-shadow); }
.env-badge{ display:inline-block; font-family:var(--font-cond); font-weight:700; font-size:1.05rem; letter-spacing:1.5px; background:var(--mane-red); color:#fff; padding:7px 18px; border-radius:10px; margin-bottom:18px; box-shadow:0 10px 22px -12px rgba(200,16,46,.9); }
.env-card h3{ color:#fff; margin-bottom:1.1rem; }
.env-card ul{ list-style:none; margin-bottom:1.4rem; }
.env-card li{ position:relative; padding-left:28px; margin-bottom:.8rem; color:rgba(233,246,253,.92); font-size:.99rem; }
.env-card li::before{ content:""; position:absolute; left:0; top:.5em; width:14px; height:14px; border-radius:50%; background:radial-gradient(circle at 35% 35%,var(--glow),var(--ocean)); box-shadow:0 0 10px rgba(95,208,245,.5); }
.env-ref{ font-size:.91rem; color:rgba(233,246,253,.72); border-top:1px solid rgba(127,227,255,.2); padding-top:1.1rem; }
.env-ref strong{ color:var(--glow); }
.env-ref em{ font-style:normal; font-weight:600; color:rgba(233,246,253,.88); }

/* =========================================================
   ÉQUIPE — ORBITE
   ========================================================= */
.section-team{ background:linear-gradient(180deg,#021624 0%, #042a45 50%, #021624 100%); color:#fff; position:relative; overflow:hidden; }
.section-team::before{ content:""; position:absolute; inset:0; background:url("../img/deco/bathymetry.svg") center/cover no-repeat; opacity:.4; mix-blend-mode:screen; pointer-events:none; }
.section-team .container{ position:relative; z-index:2; }
.section-team h2{ color:#fff; }
.section-team .eyebrow{ color:var(--glow); }
.section-team .section-sub{ color:rgba(233,246,253,.8); }

.team-orbit{
  position:relative; width:min(720px,94vw); aspect-ratio:1; margin:30px auto 0;
  --r: min(300px, 42vw);
}
.orbit-ring{ position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); border-radius:50%; border:1.5px dashed rgba(95,208,245,.35); }
.orbit-ring-outer{ width:calc(var(--r) * 2 + 70px); height:calc(var(--r) * 2 + 70px); animation:spin 60s linear infinite; }
.orbit-ring-inner{ width:calc(var(--r) * 2 - 60px); height:calc(var(--r) * 2 - 60px); border-color:rgba(95,208,245,.18); animation:spin 45s linear infinite reverse; }
@keyframes spin{ to{ transform:translate(-50%,-50%) rotate(360deg) } }

/* Centre : le logo et le panneau détail se superposent */
.orbit-center{
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%); z-index:3;
  width:min(320px,46vw); height:min(320px,46vw); border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:radial-gradient(circle, rgba(4,42,69,.92) 55%, transparent 100%);
}
.orbit-logo{
  width:86%; transition:opacity .35s var(--ease), transform .35s var(--ease);
  filter:drop-shadow(0 0 30px rgba(0,168,224,.55));
}
.orbit-detail{
  position:absolute; inset:0; display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:6% 9%; opacity:0; transform:scale(.96);
  transition:opacity .35s var(--ease), transform .35s var(--ease); pointer-events:none;
}
.orbit-detail .td-name{ font-family:var(--font-display); font-size:clamp(1.25rem,2.4vw,1.7rem); color:#fff; line-height:1.1; margin-bottom:.2rem; }
.orbit-detail .td-name::after{ content:""; display:block; width:54px; height:3px; margin:.55rem auto .7rem; background:linear-gradient(90deg,var(--glow),var(--mane-red)); border-radius:2px; box-shadow:0 0 12px rgba(95,208,245,.6); }
.orbit-detail .td-role{ color:rgba(233,246,253,.9); font-size:clamp(.82rem,1.4vw,.98rem); line-height:1.45; }
/* Swap au survol d'un membre (classe posée sur .team-orbit en JS) */
.team-orbit.show-detail .orbit-logo{ opacity:0; transform:scale(.92); }
.team-orbit.show-detail .orbit-detail{ opacity:1; transform:scale(1); }

.orbit-node{
  position:absolute; top:50%; left:50%; z-index:4;
  transform:translate(-50%,-50%) rotate(var(--angle)) translateX(var(--r)) rotate(calc(-1 * var(--angle)));
  display:flex; flex-direction:column; align-items:center; gap:8px;
}
.orbit-photo{
  width:clamp(80px,13vw,112px); height:clamp(80px,13vw,112px); border-radius:50%; padding:0; border:none; cursor:pointer;
  background:linear-gradient(150deg,var(--glow),var(--ocean)); position:relative;
  box-shadow:0 12px 30px -12px rgba(0,0,0,.6); transition:transform .3s var(--ease), box-shadow .3s;
}
.orbit-photo::before{ content:""; position:absolute; inset:-4px; border-radius:50%; background:conic-gradient(from 0deg,var(--glow),var(--ocean),var(--mane-red),var(--glow)); opacity:0; transition:opacity .35s; z-index:-1; }
.orbit-photo img{ width:100%; height:100%; object-fit:cover; border-radius:50%; border:3px solid rgba(4,42,69,.9); filter:grayscale(.25); transition:filter .3s; }
.orbit-photo:hover, .orbit-photo:focus-visible, .orbit-node.active .orbit-photo{ transform:scale(1.12); box-shadow:var(--glow-shadow); outline:none; }
.orbit-photo:hover::before, .orbit-photo:focus-visible::before, .orbit-node.active .orbit-photo::before{ opacity:1; }
.orbit-photo:hover img, .orbit-node.active .orbit-photo img{ filter:grayscale(0); }
.orbit-name{ font-family:var(--font-cond); font-size:.92rem; font-weight:600; letter-spacing:.3px; color:rgba(233,246,253,.92); text-align:center; max-width:130px; line-height:1.1; text-shadow:0 2px 8px rgba(0,0,0,.6); }

/* version mobile : liste de cartes */
.team-grid-mobile{ display:none; gap:16px; }
.team-card-m{ display:flex; gap:16px; align-items:center; background:rgba(255,255,255,.06); border:1px solid rgba(127,227,255,.18); border-radius:var(--radius-sm); padding:16px; }
.team-card-m img{ width:72px; height:72px; border-radius:50%; object-fit:cover; border:2px solid var(--glow); flex:none; }
.team-card-m h3{ color:#fff; font-size:1.18rem; margin-bottom:.2rem; }
.team-card-m p{ color:rgba(233,246,253,.8); font-size:.9rem; line-height:1.5; }

@media (prefers-reduced-motion:reduce){ .orbit-ring{ animation:none } .orbit-logo,.orbit-detail{ transition:none } }

/* =========================================================
   PARTENAIRES
   ========================================================= */
.partners-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:24px; }
.partner-logo{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); height:160px; display:flex; align-items:center; justify-content:center; padding:24px 30px; transition:transform .25s var(--ease), box-shadow .25s, border-color .25s; }
.partner-logo:hover{ transform:translateY(-4px) scale(1.02); box-shadow:var(--shadow-sm); border-color:var(--glow); }
.partner-logo img{ max-width:100%; max-height:100%; width:auto; height:auto; object-fit:contain; filter:grayscale(1); opacity:.68; transition:filter .3s, opacity .3s; }
.partner-logo:hover img{ filter:grayscale(0); opacity:1; }

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid{ display:grid; grid-template-columns:1fr 1.1fr; gap:clamp(36px,5vw,60px); align-items:start; }
.contact-intro h2{ margin-bottom:1.1rem; }
.contact-intro > p{ color:rgba(233,246,253,.9); margin-bottom:2rem; font-size:1.08rem; }
.contact-info{ list-style:none; }
.contact-info li{ display:flex; gap:16px; align-items:flex-start; margin-bottom:1.5rem; }
.ci-icon{ flex:none; width:48px; height:48px; border-radius:14px; display:flex; align-items:center; justify-content:center; background:rgba(95,208,245,.1); border:1px solid rgba(127,227,255,.25); color:var(--glow); }
.ci-icon svg{ width:22px; height:22px; }
.ci-text{ display:flex; flex-direction:column; }
.ci-label{ font-family:var(--font-cond); font-size:.8rem; text-transform:uppercase; letter-spacing:1.5px; color:var(--glow); margin-bottom:.15rem; }
.ci-text a, .ci-text > span:not(.ci-label){ color:#fff; font-size:1.08rem; transition:color .2s; }
.ci-text a:hover{ color:var(--glow); }

.contact-form{ background:#fff; border-radius:var(--radius); padding:clamp(26px,4vw,38px); box-shadow:var(--shadow-lg); }
.form-row{ margin-bottom:20px; }
.form-row label{ display:block; font-family:var(--font-cond); font-weight:600; font-size:.98rem; color:var(--deep); margin-bottom:.45rem; letter-spacing:.3px; }
.form-row label span{ color:var(--mane-red); }
.form-row input, .form-row textarea{ width:100%; padding:13px 16px; border:1.5px solid var(--line); border-radius:var(--radius-sm); font-family:var(--font-body); font-size:1rem; color:var(--ink); background:#fbfdff; transition:border-color .2s, box-shadow .2s, background .2s; }
.form-row input::placeholder, .form-row textarea::placeholder{ color:#a9bcc8; }
.form-row input:focus, .form-row textarea:focus{ outline:none; border-color:var(--teal); background:#fff; box-shadow:0 0 0 4px rgba(0,168,224,.13); }
.form-row textarea{ resize:vertical; min-height:120px; }
.form-status{ margin-top:16px; font-size:.96rem; text-align:center; min-height:1.2em; }
.form-status.ok{ color:var(--ocean); font-weight:600; }
.form-status.err{ color:var(--mane-red); font-weight:600; }

/* =========================================================
   FOOTER
   ========================================================= */
#footer{ background:linear-gradient(180deg,#021624,#010d16); color:rgba(233,246,253,.72); padding-top:clamp(48px,7vw,72px); position:relative; }
.footer-inner{ display:grid; grid-template-columns:1.7fr 1fr 1fr 1.2fr; gap:36px; padding-bottom:44px; }
.footer-brand{ max-width:360px; }
.footer-brand > img{ height:52px; background:#fff; padding:8px 14px; border-radius:10px; margin-bottom:18px; }
.footer-brand p{ font-size:.96rem; line-height:1.7; }
.footer-group-link{ display:inline-flex; flex-direction:column; gap:8px; margin-top:1.1rem; transition:transform .25s var(--ease); }
.footer-group-link:hover{ transform:translateY(-2px); }
.footer-group-label{ font-family:var(--font-cond); letter-spacing:1.5px; text-transform:uppercase; font-size:.78rem; color:rgba(233,246,253,.55); }
.footer-group-logo{ height:46px; width:auto; opacity:.9; transition:opacity .25s, filter .25s; filter:drop-shadow(0 4px 12px rgba(0,0,0,.4)); }
.footer-group-link:hover .footer-group-logo{ opacity:1; }
.footer-col{ display:flex; flex-direction:column; gap:12px; }
.footer-col-title{ font-family:var(--font-cond); text-transform:uppercase; letter-spacing:2px; font-size:.85rem; color:var(--glow); margin-bottom:.4rem; }
.footer-col a, .footer-col span:not(.footer-col-title){ font-size:1rem; color:rgba(233,246,253,.78); transition:color .2s; line-height:1.5; }
.footer-col a:hover{ color:var(--glow); }
.footer-bottom{ border-top:1px solid rgba(127,227,255,.12); padding:22px 0; }
.footer-bottom .container{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; }
.footer-bottom p{ font-size:.85rem; color:rgba(233,246,253,.5); }

/* =========================================================
   BACK TO TOP
   ========================================================= */
#back-to-top{ position:fixed; right:24px; bottom:24px; z-index:800; width:50px; height:50px; border-radius:50%; background:var(--mane-red); color:#fff; display:flex; align-items:center; justify-content:center; box-shadow:0 14px 30px -12px rgba(200,16,46,.8); opacity:0; visibility:hidden; transform:translateY(16px) scale(.9); transition:opacity .3s var(--ease), transform .3s var(--ease), visibility .3s, background .2s; }
#back-to-top.show{ opacity:1; visibility:visible; transform:none; }
#back-to-top:hover{ background:var(--mane-red-2); transform:translateY(-3px); }
#back-to-top svg{ width:22px; height:22px; }

/* =========================================================
   REVEAL
   ========================================================= */
.reveal{ opacity:0; transform:translateY(30px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.visible{ opacity:1; transform:none; }
.reveal-delay-1{ transition-delay:.08s; }
.reveal-delay-2{ transition-delay:.16s; }
.reveal-delay-3{ transition-delay:.24s; }
@media (prefers-reduced-motion:reduce){ .reveal{ opacity:1; transform:none; transition:none } }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:980px){
  .expertise-grid, .contact-grid{ grid-template-columns:1fr; }
  .expertise-stats{ position:static; }
  .footer-inner{ grid-template-columns:1fr 1fr; }
  .footer-brand{ grid-column:1 / -1; }
}
@media (max-width:820px){
  .metiers-grid, .env-grid{ grid-template-columns:1fr; }
}
@media (max-width:768px){
  #nav-toggle{ display:flex; }
  #nav-list{ position:fixed; top:0; right:0; width:min(320px,82vw); height:100svh; flex-direction:column; align-items:flex-start; gap:0; background:#fff; padding:96px 28px 28px; box-shadow:-20px 0 60px -30px rgba(0,0,0,.8); transform:translateX(110%); transition:transform .4s var(--ease); z-index:880; }
  #nav-list.open{ transform:translateX(0); }
  #nav-list li{ width:100%; opacity:0; transform:translateX(20px); }
  #nav-list.open li{ animation:navItem .4s var(--ease) forwards; }
  #nav-list.open li:nth-child(1){ animation-delay:.06s } #nav-list.open li:nth-child(2){ animation-delay:.12s } #nav-list.open li:nth-child(3){ animation-delay:.18s } #nav-list.open li:nth-child(4){ animation-delay:.24s } #nav-list.open li:nth-child(5){ animation-delay:.30s } #nav-list.open li:nth-child(6){ animation-delay:.36s } #nav-list.open li:nth-child(7){ animation-delay:.42s }
  @keyframes navItem{ to{opacity:1;transform:none} }
  #nav-list a{ color:var(--deep); text-shadow:none; display:block; padding:15px 0; border-bottom:1px solid var(--line); width:100%; font-size:1.2rem; }
  #nav-list a:not(.nav-cta)::after{ display:none; }
  .nav-cta{ margin-top:20px; text-align:center; }
  #nav-toggle{ z-index:890; }
  body.nav-open::after{ content:""; position:fixed; inset:0; background:rgba(2,22,36,.6); z-index:850; backdrop-filter:blur(3px); }
  .hero{ padding:120px 0 160px; }
  .hero-scroll{ display:none; }
  /* équipe : bascule en liste */
  .team-orbit, .team-detail{ display:none; }
  .team-grid-mobile{ display:grid; }
}
@media (max-width:560px){
  .expertise-stats{ grid-template-columns:1fr 1fr; }
  .footer-inner{ grid-template-columns:1fr; }
  .hero-trust-logos img{ height:52px; max-width:165px; }
  .domain-cards{ grid-template-columns:1fr; }
}
@media (max-width:400px){
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-actions .btn{ justify-content:center; }
  .expertise-stats{ grid-template-columns:1fr; }
  .partners-grid{ grid-template-columns:1fr 1fr; }
}

/* ===== CTA Documentation (PDF) en fin de section ===== */
.section-cta{
  margin-top:54px;
  padding:30px 34px;
  border-radius:var(--radius);
  background:linear-gradient(135deg, rgba(0,168,224,.07), rgba(0,112,176,.05));
  border:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:26px;
  flex-wrap:wrap;
}
.section-cta-text{
  flex:1 1 340px;
  margin:0;
  font-size:1.02rem;
  line-height:1.6;
  color:var(--ink);
}
.btn-doc{
  flex:0 0 auto;
  background:var(--ocean);
  color:#fff;
  box-shadow:0 14px 32px -16px rgba(0,112,176,.85);
}
.btn-doc:hover{ background:var(--teal); transform:translateY(-2px); box-shadow:0 20px 42px -16px rgba(0,168,224,.9); }
.btn-doc svg{ width:20px; height:20px; }
.btn-doc:hover svg{ transform:none; }

/* Variante sur fond foncé (section Environnement) */
.section-cta-light{
  background:linear-gradient(135deg, rgba(127,227,255,.12), rgba(95,208,245,.05));
  border-color:rgba(127,227,255,.28);
}
.section-cta-light .section-cta-text{ color:#eaf6fb; }
.btn-doc-light{ background:#fff; color:var(--ocean); box-shadow:0 14px 32px -16px rgba(0,0,0,.4); }
.btn-doc-light:hover{ background:var(--glow); color:var(--deep); transform:translateY(-2px); }

@media (max-width:640px){
  .section-cta{ flex-direction:column; align-items:flex-start; text-align:left; padding:24px; }
  .btn-doc{ width:100%; justify-content:center; }
}