/* ============================================================
   PETRIX ENERGY GROUP — Design tokens
   Palette   : navy institutional + flame accent (from logo)
   Display   : Source Serif 4 (headlines, restrained)
   Body      : Inter
   Utility   : IBM Plex Mono (eyebrows, labels, data)
   Signature : the "horizon line" — a navy→flame gradient rule
               that marks every section threshold, echoing
               "alimenter le présent / accélérer la transition"
   ============================================================ */

:root{
  --navy-900:#061a33;
  --navy-800:#0b2a4a;
  --navy-700:#123a63;
  --navy-600:#1c4b7c;
  --white:#ffffff;
  --ink:#16233a;
  --ink-soft:#4b5a72;
  --mist:#f4f6f9;
  --mist-2:#eaeef3;
  --line:#dbe2ea;
  --flame:#f4661b;
  --flame-light:#ffa45c;
  --flame-dim:#f4661b1a;

  --serif: "Source Serif 4", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", "Courier New", monospace;

  --container: 1180px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  line-height:1.6;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--serif);margin:0 0 .5em;font-weight:600;color:var(--navy-900);line-height:1.15;}
p{margin:0 0 1em;}
.wrap{max-width:var(--container);margin:0 auto;padding:0 32px;}

/* Focus visibility */
a:focus-visible, button:focus-visible{outline:3px solid var(--flame);outline-offset:3px;}

/* ---------- Eyebrow / labels ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--flame);
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--flame);
  display:inline-block;
}

/* ---------- Horizon line signature ---------- */
.horizon{
  height:3px;
  width:100%;
  background:linear-gradient(90deg,var(--navy-800) 0%,var(--navy-700) 35%,var(--flame) 78%,var(--flame-light) 100%);
}
.horizon-thin{
  height:1px;
  width:64px;
  background:linear-gradient(90deg,var(--navy-700),var(--flame));
  margin:18px 0 26px;
}

/* ---------- Header ---------- */
header.site{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-row{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 32px;max-width:var(--container);margin:0 auto;
}
.brand{display:flex;align-items:center;gap:12px;}
.brand img{height:38px;width:auto;}
nav.primary{display:flex;gap:2px;align-items:center;}
nav.primary a{
  font-family:var(--mono);
  font-size:12.5px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--ink-soft);
  padding:10px 14px;
  position:relative;
}
nav.primary a:hover{color:var(--navy-900);}
nav.primary a.active{color:var(--navy-900);font-weight:600;}
nav.primary a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:linear-gradient(90deg,var(--navy-700),var(--flame));
}
.nav-cta{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;
  background:var(--navy-900);color:var(--white)!important;
  padding:10px 18px;border-radius:2px;
}
.nav-cta:hover{background:var(--flame);}
.menu-toggle{display:none;background:none;border:0;cursor:pointer;padding:6px;}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--navy-900);margin:5px 0;}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(1100px 500px at 85% -10%, #12345f 0%, transparent 60%),
    linear-gradient(180deg,var(--navy-900), #081f3a 100%);
  color:var(--white);
  padding:110px 0 90px;
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,transparent,var(--flame) 60%,var(--flame-light));
}
.hero .wrap{position:relative;z-index:2;}
.hero h1{
  color:var(--white);
  font-size:clamp(34px,5vw,58px);
  max-width:15ch;
  letter-spacing:-.01em;
}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(90deg,var(--flame-light),var(--flame));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{
  color:#c9d6e8;
  font-size:18px;
  max-width:58ch;
  margin:22px 0 34px;
}
.hero-flame{
  position:absolute;right:-60px;top:-40px;width:420px;opacity:.14;
  filter:brightness(0) invert(1);
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;text-transform:uppercase;
  padding:14px 24px;border-radius:2px;border:1px solid transparent;
  cursor:pointer;transition:.15s ease;
}
.btn-primary{background:var(--flame);color:var(--white);}
.btn-primary:hover{background:#d8550f;}
.btn-ghost{border-color:rgba(255,255,255,.35);color:var(--white);}
.btn-ghost:hover{border-color:var(--flame);color:var(--flame-light);}
.btn-dark{background:var(--navy-900);color:var(--white);}
.btn-dark:hover{background:var(--flame);}
.btn-row{display:flex;gap:16px;flex-wrap:wrap;}

/* ---------- Sections ---------- */
section{padding:88px 0;}
section.tight{padding:64px 0;}
.section-mist{background:var(--mist);}
.section-navy{background:var(--navy-900);color:var(--white);position:relative;overflow:hidden;}
.section-navy h2, .section-navy h3{color:var(--white);}
.section-navy .wrap{position:relative;z-index:2;}
.section-head{max-width:66ch;margin-bottom:48px;}
.section-head h2{font-size:clamp(26px,3.4vw,38px);}
.section-head p{color:var(--ink-soft);font-size:17px;}

/* ---------- Grids / cards ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}

.card{
  background:var(--white);
  border:1px solid var(--line);
  padding:32px 28px;
  transition:.2s ease;
}
.card:hover{border-color:var(--flame);transform:translateY(-3px);box-shadow:0 14px 30px -18px rgba(6,26,51,.35);}
.card .tag{font-family:var(--mono);font-size:11.5px;color:var(--flame);text-transform:uppercase;letter-spacing:.1em;}
.card h3{font-size:20px;margin-top:10px;}
.card ul{padding-left:18px;margin:14px 0 0;color:var(--ink-soft);font-size:14.5px;}
.card ul li{margin-bottom:6px;}

.card-dark{
  background:var(--navy-800);color:var(--white);border:1px solid var(--navy-700);
}
.card-dark .tag{color:var(--flame-light);}
.card-dark ul{color:#c9d6e8;}

/* ---------- Values ---------- */
.value{
  border-top:2px solid var(--navy-900);
  padding-top:16px;
}
.value h4{font-size:17px;margin-bottom:6px;}
.value p{color:var(--ink-soft);font-size:14.5px;margin:0;}

/* ---------- Stat / quote panel ---------- */
.panel{
  background:var(--navy-900);color:var(--white);
  padding:40px 36px;
  position:relative;
}
.panel::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--flame),var(--flame-light));
}
.panel p{color:#dbe6f4;font-size:16.5px;}
.panel .src{font-family:var(--mono);font-size:12px;color:var(--flame-light);text-transform:uppercase;letter-spacing:.08em;margin-top:16px;}

/* ---------- Team ---------- */
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.team-card{background:var(--white);border:1px solid var(--line);text-align:left;overflow:hidden;}
.team-photo{
  aspect-ratio:4/5;width:100%;object-fit:cover;object-position:top center;
  background:var(--mist-2);
  filter:grayscale(.1);
}
.team-body{padding:22px 22px 26px;border-top:2px solid var(--navy-900);}
.team-body h3{font-size:19px;margin-bottom:2px;}
.team-role{font-family:var(--mono);font-size:12px;color:var(--flame);text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px;display:block;}
.team-body p{font-size:14px;color:var(--ink-soft);margin:0;}

.team-placeholder{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  aspect-ratio:4/5;background:var(--mist-2);color:#9aa8bd;
  border-bottom:1px solid var(--line);
}
.team-placeholder .plus{font-size:34px;font-family:var(--serif);color:#c3cddb;}
.team-placeholder span.label{font-family:var(--mono);font-size:11px;text-transform:uppercase;letter-spacing:.08em;margin-top:8px;}

/* ---------- CTA banner ---------- */
.cta-banner{
  background:linear-gradient(120deg,var(--navy-900),var(--navy-700));
  color:var(--white);
  padding:64px 0;
  text-align:center;
  position:relative;
}
.cta-banner h2{color:var(--white);font-size:clamp(24px,3vw,34px);}
.cta-banner p{color:#c9d6e8;max-width:56ch;margin:0 auto 28px;}
.cta-banner .btn-row{justify-content:center;}

/* ---------- Footer ---------- */
footer.site{background:var(--navy-900);color:#aebbd0;padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px;}
.footer-grid h5{
  font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.1em;
  color:var(--white);margin:0 0 16px;
}
.footer-grid a{display:block;color:#aebbd0;font-size:14.5px;margin-bottom:10px;}
.footer-grid a:hover{color:var(--flame-light);}
.footer-brand img{height:34px;margin-bottom:16px;filter:brightness(0) invert(1);}
.footer-brand p{font-size:14px;color:#8b9ab3;max-width:34ch;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:22px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:#7c8ba5;
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{
  background:var(--navy-900);color:var(--white);
  padding:70px 0 54px;position:relative;overflow:hidden;
}
.page-hero .wrap{position:relative;z-index:2;}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:3px;
  background:linear-gradient(90deg,transparent,var(--flame) 60%,var(--flame-light));
}
.page-hero h1{color:var(--white);font-size:clamp(28px,4vw,44px);max-width:20ch;}
.page-hero p{color:#c9d6e8;max-width:60ch;font-size:16.5px;}
.breadcrumb{font-family:var(--mono);font-size:12px;color:#8fa3c2;text-transform:uppercase;letter-spacing:.06em;margin-bottom:18px;}
.breadcrumb a:hover{color:var(--flame-light);}

/* ---------- Timeline / activity block ---------- */
.activity-block{
  display:grid;grid-template-columns:.9fr 1.6fr;gap:48px;
  padding:44px 0;border-bottom:1px solid var(--line);
}
.activity-block:last-child{border-bottom:0;}
.activity-num{font-family:var(--mono);font-size:13px;color:var(--flame);letter-spacing:.08em;}
.activity-block h3{font-size:24px;}
.activity-block ul{margin:16px 0 0;padding-left:20px;color:var(--ink-soft);}
.activity-block ul li{margin-bottom:8px;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;}
.contact-list{list-style:none;padding:0;margin:0;}
.contact-list li{
  padding:18px 0;border-bottom:1px solid var(--line);
  display:flex;flex-direction:column;gap:4px;
}
.contact-list .k{font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--flame);}
.contact-list .v{font-size:16px;color:var(--navy-900);}
.form-field{margin-bottom:18px;}
.form-field label{
  display:block;font-family:var(--mono);font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;
  color:var(--ink-soft);margin-bottom:8px;
}
.form-field input, .form-field textarea{
  width:100%;border:1px solid var(--line);padding:13px 14px;font-family:var(--sans);font-size:15px;
  background:var(--white);color:var(--ink);
}
.form-field input:focus, .form-field textarea:focus{outline:none;border-color:var(--flame);}
.form-field textarea{resize:vertical;min-height:120px;}

/* ---------- Energy sweep (ambient motion overlay) ---------- */
@keyframes sweep{
  0%{transform:translate(-6%,-2%) scale(1);opacity:.4;}
  50%{opacity:.65;}
  100%{transform:translate(6%,3%) scale(1.08);opacity:.4;}
}
.energy-sweep{
  position:absolute;inset:-15% -8%;
  background:
    radial-gradient(46% 38% at 26% 66%, rgba(244,102,27,.32), transparent 70%),
    radial-gradient(40% 32% at 76% 26%, rgba(28,75,124,.5), transparent 70%);
  filter:blur(46px);
  animation:sweep 16s ease-in-out infinite alternate;
  pointer-events:none;
  z-index:0;
}

/* ---------- Pipeline flow dash animation (shared by inline SVG) ---------- */
@keyframes flow-dash{ to{ stroke-dashoffset:-120; } }
.pipe-flow{ animation:flow-dash 3.2s linear infinite; }

/* ---------- Immersive scene section ---------- */
.scene{
  position:relative;
  padding:0;
  min-height:640px;
  background:var(--navy-900);
  overflow:hidden;
  display:flex;
  align-items:flex-end;
}
.scene img.scene-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center bottom;
}
.scene .scene-shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(6,26,51,.15) 0%, rgba(6,26,51,.05) 40%, rgba(6,26,51,.92) 92%);
}
.scene .wrap{position:relative;z-index:2;width:100%;padding-bottom:0;}
.scene-head{max-width:60ch;margin-bottom:34px;padding-top:60px;}
.scene-head h2{color:var(--white);font-size:clamp(26px,3.6vw,40px);}
.scene-head p{color:#d7e2f0;font-size:16.5px;}

.scene-cards{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:1px;background:rgba(255,255,255,.12);
  margin-top:20px;
}
.scene-card{
  background:rgba(6,26,51,.72);
  backdrop-filter:blur(3px);
  padding:26px 26px 24px;
  min-height:150px;
  display:flex;flex-direction:column;justify-content:flex-end;
  transition:.2s ease;
  position:relative;
}
.scene-card:hover{background:rgba(244,102,27,.24);}
.scene-card .tag{font-family:var(--mono);font-size:11px;color:var(--flame-light);text-transform:uppercase;letter-spacing:.1em;margin-bottom:8px;}
.scene-card h3{color:var(--white);font-size:19px;margin:0 0 4px;}
.scene-card span.sub{color:#c9d6e8;font-size:13.5px;}
.scene-card::after{content:"→";position:absolute;top:24px;right:24px;color:var(--flame-light);font-family:var(--mono);opacity:0;transform:translateX(-6px);transition:.2s ease;}
.scene-card:hover::after{opacity:1;transform:translateX(0);}

/* ---------- Careers band ---------- */
.careers{
  position:relative;
  background:linear-gradient(120deg,var(--flame-light),var(--flame) 55%,#d8550f);
  color:var(--navy-900);
  padding:70px 0 64px;
  overflow:hidden;
}
.careers::before{
  content:"";position:absolute;inset:0;
  background:
    repeating-linear-gradient(115deg, rgba(255,255,255,.15) 0 2px, transparent 2px 26px);
  mix-blend-mode:overlay;
}
.careers .wrap{position:relative;z-index:2;text-align:center;}
.careers .eyebrow{color:var(--navy-900);justify-content:center;}
.careers .eyebrow::before{background:var(--navy-900);}
.careers h2{color:var(--navy-900);font-size:clamp(26px,3.4vw,38px);max-width:34ch;margin:0 auto 14px;}
.careers p{color:#3a2410;max-width:60ch;margin:0 auto 30px;font-size:16.5px;}
.careers .btn-dark{background:var(--navy-900);color:var(--white);}
.careers .btn-dark:hover{background:#000;}
.careers .btn-outline{
  border:1.5px solid var(--navy-900);color:var(--navy-900);
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;text-transform:uppercase;
  padding:13px 22px;border-radius:2px;
}
.careers .btn-outline:hover{background:var(--navy-900);color:var(--white);}

/* ---------- Pipeline strip ---------- */
.pipeline-strip{width:100%;height:170px;display:block;overflow:hidden;background:var(--navy-900);}
.pipeline-strip img{width:100%;height:100%;object-fit:cover;}

/* ---------- Floating particles (ambient life) ---------- */
.particles{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:1;}
.particles span{
  position:absolute;bottom:-10px;
  width:4px;height:4px;border-radius:50%;
  background:var(--flame-light);
  opacity:.55;
  animation:rise linear infinite;
}
@keyframes rise{
  0%{transform:translateY(0) translateX(0);opacity:0;}
  10%{opacity:.6;}
  100%{transform:translateY(-620px) translateX(20px);opacity:0;}
}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease;}
.reveal.in{opacity:1;transform:translateY(0);}

/* ---------- Placeholder note ---------- */
.notice{
  background:var(--flame-dim);border:1px dashed var(--flame);
  padding:14px 18px;font-size:13.5px;color:#8a3d13;font-family:var(--mono);
}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .grid-2{grid-template-columns:1fr;gap:32px;}
  .grid-3{grid-template-columns:1fr 1fr;}
  .grid-4{grid-template-columns:1fr 1fr;}
  .team-grid{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .activity-block{grid-template-columns:1fr;gap:14px;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:720px){
  nav.primary{
    position:fixed;top:66px;left:0;right:0;bottom:0;
    background:var(--white);
    flex-direction:column;align-items:flex-start;
    padding:20px 32px;gap:6px;
    transform:translateX(100%);transition:transform .25s ease;
    overflow-y:auto;
  }
  nav.primary.open{transform:translateX(0);}
  .menu-toggle{display:block;}
  .grid-3{grid-template-columns:1fr;}
  .grid-4{grid-template-columns:1fr 1fr;}
  .team-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{transition:none;opacity:1;transform:none;}
  .card:hover{transform:none;}
}