/* ===================================================================
   CONSTRUCTION PROVITE RENOVATION — Design system
   Noir profond / gris anthracite / graphite / argent métallique / blanc
=================================================================== */

:root{
  --black:#08090A;
  --graphite:#151719;
  --dark-gray:#24272A;
  --dark-gray-2:#2E3235;
  --silver:#BFC3C7;
  --light-silver:#E1E4E7;
  --white:#FFFFFF;

  --silver-grad: linear-gradient(135deg, #8F9499 0%, #E6E8EA 50%, #A8ADB2 100%);
  --silver-grad-soft: linear-gradient(180deg, rgba(191,195,199,0.18), rgba(191,195,199,0.02));
  --glass-bg: rgba(255,255,255,0.06);
  --glass-border: rgba(255,255,255,0.15);
  --glass-bg-strong: rgba(10,11,12,0.72);

  /* Silver "base" theme — used on content sections (logo-matched metallic silver) */
  --base-silver-1: #D6D9DC;
  --base-silver-2: #C7CBCE;
  --panel: #DEE1E3;
  --panel-strong: #D0D3D6;
  --ink: #15171A;
  --ink-soft: #4A4E52;
  --ink-mute: #6E7276;
  --line-on-light: rgba(15,17,19,0.12);
  --line-on-light-strong: rgba(15,17,19,0.22);
  --metal-dark-grad: linear-gradient(135deg, #6E7378 0%, #2C2F32 55%, #454850 100%);
  --glass-bg-light: rgba(10,11,12,0.04);
  --glass-border-light: rgba(10,11,12,0.14);

  --font-display: 'Montserrat', 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;

  --ease: cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body.menu-open{ overflow:hidden; }

body{
  margin:0;
  background:var(--base-silver-1);
  color:var(--light-silver);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
h1,h2,h3,h4{ font-family:var(--font-display); color:var(--white); margin:0; }

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

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:12px;
  font-family:var(--font-display);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:3px;
  text-transform:uppercase;
  color:var(--silver);
}
.eyebrow::before{
  content:'';
  width:28px;
  height:1px;
  background:var(--silver-grad);
}

.silver-line{
  width:64px;
  height:2px;
  background:var(--silver-grad);
  border-radius:2px;
}

.section-head{
  max-width:720px;
  margin-bottom:56px;
}
.section-head h2{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:700;
  letter-spacing:0.5px;
  line-height:1.15;
  margin:14px 0 16px;
}
.section-head p{
  color:var(--silver);
  font-size:17px;
  max-width:560px;
}
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head.center .silver-line{ margin:0 auto; }
.section-head.center p{ margin-left:auto; margin-right:auto; }

section{ position:relative; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:16px 34px;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:600;
  letter-spacing:2px;
  text-transform:uppercase;
  border-radius:2px;
  border:1px solid transparent;
  transition:transform .4s var(--ease), box-shadow .4s var(--ease), background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--silver-grad);
  color:#0A0B0C;
  box-shadow:0 1px 0 rgba(255,255,255,0.4) inset, 0 12px 30px -12px rgba(0,0,0,0.7);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 1px 0 rgba(255,255,255,0.5) inset, 0 18px 34px -12px rgba(0,0,0,0.8); }
.btn-ghost{
  background:rgba(255,255,255,0.03);
  border-color:rgba(255,255,255,0.35);
  color:var(--white);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{ border-color:var(--silver); background:rgba(255,255,255,0.08); transform:translateY(-2px); }
.btn-ghost-dark{
  background:rgba(20,22,24,0.04);
  border-color:rgba(20,22,24,0.4);
  color:var(--ink);
  backdrop-filter:blur(6px);
}
.btn-ghost-dark:hover{ border-color:var(--ink); background:rgba(20,22,24,0.09); transform:translateY(-2px); }
.btn-block{ width:100%; }

/* ---------------- Reveal on scroll ---------------- */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }
.reveal-delay-1.in{ transition-delay:.12s; }
.reveal-delay-2.in{ transition-delay:.24s; }
.reveal-delay-3.in{ transition-delay:.36s; }
.reveal-delay-4.in{ transition-delay:.48s; }
.reveal-delay-5.in{ transition-delay:.6s; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ===================== HEADER ===================== */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:1000;
  padding:20px 0;
  transition:padding .4s var(--ease), background .4s var(--ease), border-color .4s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header .header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:12px 22px;
  background:rgba(255,255,255,0.55);
  border:1px solid rgba(255,255,255,0.7);
  border-radius:14px;
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 10px 30px -18px rgba(20,22,24,0.35);
  transition:background .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
}
.site-header.scrolled{ padding:12px 0; }
.site-header.scrolled .header-inner{
  background:rgba(255,255,255,0.86);
  border-color:rgba(255,255,255,0.9);
  box-shadow:0 14px 34px -16px rgba(20,22,24,0.3);
}

.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height:46px; width:auto; }
.brand-text{ display:flex; flex-direction:column; line-height:1.05; }
.brand-text .name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:14.5px;
  letter-spacing:1.4px;
  color:var(--ink);
}
.brand-text .sub{
  font-size:10px;
  letter-spacing:2px;
  color:var(--ink-mute);
  text-transform:uppercase;
  margin-top:3px;
}

.main-nav{ display:flex; align-items:center; gap:34px; }
.main-nav a{
  font-family:var(--font-display);
  font-size:12.5px;
  font-weight:600;
  letter-spacing:1.4px;
  text-transform:uppercase;
  color:var(--ink-soft);
  position:relative;
  padding:6px 0;
}
.main-nav a::after{
  content:'';
  position:absolute; left:0; right:100%; bottom:0;
  height:1px;
  background:var(--metal-dark-grad);
  transition:right .35s var(--ease);
}
.main-nav a:hover{ color:var(--ink); }
.main-nav a:hover::after{ right:0; }

.header-cta{ display:flex; align-items:center; gap:16px; }
.header-cta .btn{ padding:13px 24px; font-size:11.5px; }

.burger{
  display:none;
  width:44px; height:44px;
  border-radius:10px;
  background:var(--glass-bg-light);
  border:1px solid var(--glass-border-light);
  align-items:center; justify-content:center;
  flex-direction:column; gap:5px;
}
.burger span{ width:20px; height:1.5px; background:var(--ink); display:block; transition:transform .35s var(--ease), opacity .35s var(--ease); }
.burger.active span:nth-child(1){ transform:translateY(6.5px) rotate(45deg); }
.burger.active span:nth-child(2){ opacity:0; }
.burger.active span:nth-child(3){ transform:translateY(-6.5px) rotate(-45deg); }

.mobile-menu{
  position:fixed; inset:0;
  background:rgba(214,217,220,0.98);
  backdrop-filter:blur(20px);
  z-index:999;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center;
  gap:8px;
  opacity:0; visibility:hidden;
  transform:translateY(-12px);
  transition:opacity .45s var(--ease), transform .45s var(--ease), visibility .45s;
}
.mobile-menu.open{ opacity:1; visibility:visible; transform:translateY(0); }
.mobile-menu a{
  font-family:var(--font-display);
  font-size:24px;
  font-weight:600;
  letter-spacing:1px;
  color:var(--ink);
  padding:14px 0;
  text-transform:uppercase;
  opacity:0; transform:translateY(14px);
  transition:opacity .5s var(--ease), transform .5s var(--ease);
}
.mobile-menu.open a{ opacity:1; transform:translateY(0); }
.mobile-menu .btn{ margin-top:20px; }

/* ===================== HERO ===================== */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  align-items:center;
  overflow:hidden;
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-media img{ width:100%; height:100%; object-fit:cover; transform:scale(1.06); animation:heroZoom 16s ease-out forwards; }
@keyframes heroZoom{ to{ transform:scale(1); } }
.hero-media::after{
  content:'';
  position:absolute; inset:0;
  background:
    linear-gradient(180deg, rgba(30,33,36,0.35) 0%, rgba(30,33,36,0.4) 30%, rgba(20,22,24,0.72) 100%),
    linear-gradient(100deg, rgba(20,22,24,0.55) 10%, rgba(30,33,36,0.28) 45%, rgba(30,33,36,0.12) 70%);
}
.hero-content{ position:relative; z-index:2; padding-top:110px; max-width:760px; width:100%; }
.hero-panel{
  background:rgba(219,222,225,0.68);
  border:1px solid rgba(255,255,255,0.55);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  border-radius:16px;
  padding:44px 46px;
  box-shadow:0 30px 60px -24px rgba(10,11,12,0.45);
}
.hero-panel .eyebrow{ color:var(--ink-mute); }
.hero-panel .eyebrow::before{ background:var(--metal-dark-grad); }
.hero-panel h1{
  color:var(--ink);
  font-size:clamp(30px,4.6vw,54px);
  font-weight:800;
  line-height:1.08;
  letter-spacing:0.3px;
  margin:22px 0 6px;
}
.hero-tagline{
  font-family:var(--font-display);
  font-size:clamp(16px,2vw,22px);
  font-weight:600;
  letter-spacing:1px;
  background:var(--metal-dark-grad);
  -webkit-background-clip:text; background-clip:text; color:transparent;
  margin-bottom:26px;
}
.hero-panel p.lead{
  font-size:17.5px;
  color:var(--ink-soft);
  max-width:560px;
  margin-bottom:38px;
}
.hero-actions{ display:flex; gap:18px; flex-wrap:wrap; margin-bottom:0; }

.hero-scroll{
  position:absolute; left:50%; bottom:8px; transform:translateX(-50%);
  z-index:2; display:flex; flex-direction:column; align-items:center; gap:10px;
  color:var(--white); font-size:10.5px; letter-spacing:3px; text-transform:uppercase;
  pointer-events:none;
  text-shadow:0 2px 10px rgba(0,0,0,0.6);
}
.scroll-line{ width:1px; height:46px; background:linear-gradient(180deg, var(--white), transparent); overflow:hidden; position:relative; }
.scroll-line::after{ content:''; position:absolute; top:-100%; left:0; width:100%; height:100%; background:var(--white); animation:scrollDrop 2.4s ease-in-out infinite; }
@keyframes scrollDrop{ 0%{ top:-100%; } 60%{ top:100%; } 100%{ top:100%; } }

/* ===================== INTRO ===================== */
.intro{ padding:130px 0; background:var(--black); }
.intro-grid{ display:grid; grid-template-columns:1fr 1fr; gap:72px; align-items:center; }
.intro-text .eyebrow{ margin-bottom:16px; display:inline-flex; }
.intro-text h2{ font-size:clamp(28px,3.4vw,40px); font-weight:700; line-height:1.2; margin:16px 0 22px; }
.intro-text p{ color:var(--silver); font-size:16.5px; margin-bottom:16px; }
.intro-stats{ display:flex; gap:40px; margin-top:38px; }
.intro-stats div strong{ display:block; font-family:var(--font-display); font-size:32px; color:var(--white); font-weight:700; }
.intro-stats div span{ font-size:12px; letter-spacing:1px; color:var(--silver); text-transform:uppercase; }
.intro-media{ position:relative; }
.intro-media .frame{ position:relative; border-radius:4px; overflow:hidden; border:1px solid rgba(255,255,255,0.1); }
.intro-media img{ width:100%; height:520px; object-fit:cover; }
.intro-media .frame::after{ content:''; position:absolute; inset:0; box-shadow:inset 0 0 0 1px rgba(255,255,255,0.06); }
.intro-media .corner-accent{
  position:absolute; top:-18px; left:-18px; width:110px; height:110px;
  border-top:2px solid; border-left:2px solid;
  border-image:var(--silver-grad) 1;
}

/* ===================== SERVICES ===================== */
.services{ padding:130px 0; background:var(--graphite); }
.services-grid{ display:grid; grid-template-columns:repeat(3, 1fr); gap:26px; }
.services-grid > article:last-child:nth-child(3n+1){ grid-column:2; }
.service-card{
  position:relative;
  height:400px;
  border-radius:6px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,0.08);
}
.service-card img{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  transition:transform .6s var(--ease);
}
.service-card:hover img{ transform:scale(1.08); }
.service-card::before{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(8,9,10,0.08) 0%, rgba(8,9,10,0.38) 38%, rgba(8,9,10,0.78) 65%, rgba(8,9,10,0.96) 100%);
  z-index:1;
  transition:background .5s var(--ease);
}
.service-card:hover::before{ background:linear-gradient(180deg, rgba(8,9,10,0.14) 0%, rgba(8,9,10,0.48) 38%, rgba(8,9,10,0.85) 65%, rgba(8,9,10,0.98) 100%); }
.service-inner{
  position:relative; z-index:2;
  height:100%;
  display:flex; flex-direction:column; justify-content:flex-end;
  padding:30px;
  text-shadow:0 2px 14px rgba(4,5,6,0.75), 0 1px 3px rgba(4,5,6,0.9);
}
.service-num{
  font-family:var(--font-display);
  font-size:13px; font-weight:700; letter-spacing:2px;
  color:var(--light-silver);
  margin-bottom:14px;
}
.service-inner h3{ font-size:21px; font-weight:700; margin-bottom:10px; letter-spacing:0.3px; color:var(--white); }
.service-inner p{ font-size:14.5px; color:var(--light-silver); margin-bottom:18px; max-width:280px; }
.service-more{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--font-display); font-size:11.5px; font-weight:600; letter-spacing:1.6px; text-transform:uppercase;
  color:var(--white);
  width:fit-content;
  padding-bottom:4px;
  border-bottom:1px solid rgba(255,255,255,0.45);
  transition:border-color .35s var(--ease), gap .35s var(--ease), color .35s var(--ease);
}
.service-card:hover .service-more{ border-color:var(--light-silver); gap:12px; color:var(--white); }
.service-more svg{ width:14px; height:14px; transition:transform .35s var(--ease); }
.service-card:hover .service-more svg{ transform:translateX(3px); }

/* ===================== EXPERTISE ===================== */
.expertise{
  padding:140px 0;
  background:
    radial-gradient(1200px 500px at 15% 0%, rgba(191,195,199,0.06), transparent 60%),
    linear-gradient(180deg, var(--dark-gray) 0%, var(--graphite) 100%);
  position:relative;
}
.expertise .container{ position:relative; z-index:1; }
.expertise-head{ max-width:640px; margin-bottom:70px; }
.expertise-head h2{ font-size:clamp(30px,4vw,48px); font-weight:700; margin:16px 0 18px; line-height:1.15; }
.expertise-head p{ color:var(--silver); font-size:17px; }
.expertise-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:rgba(255,255,255,0.08); border:1px solid rgba(255,255,255,0.08); border-radius:4px; overflow:hidden; }
.expertise-item{ background:var(--graphite); padding:44px 32px; transition:background .4s var(--ease); }
.expertise-item:hover{ background:#1b1e21; }
.expertise-item .num{
  font-family:var(--font-display); font-size:44px; font-weight:800;
  background:var(--silver-grad); -webkit-background-clip:text; background-clip:text; color:transparent;
  line-height:1;
  margin-bottom:22px;
}
.expertise-item h4{ font-size:18px; font-weight:700; letter-spacing:0.6px; text-transform:uppercase; margin-bottom:12px; }
.expertise-item p{ font-size:14px; color:var(--silver); line-height:1.6; }

/* ===================== WHY CHOOSE ===================== */
.why{ padding:130px 0; background:var(--black); }
.why-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:2px; margin-top:20px; }
.why-block{
  padding:44px 40px;
  background:var(--graphite);
  border:1px solid rgba(255,255,255,0.06);
  display:flex; gap:22px;
  transition:background .4s var(--ease), border-color .4s var(--ease);
}
.why-block:hover{ background:#191c1e; border-color:rgba(255,255,255,0.14); }
.why-icon{
  flex:none; width:52px; height:52px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  background:var(--glass-bg); border:1px solid var(--glass-border);
}
.why-icon svg{ width:24px; height:24px; stroke:var(--silver); }
.why-block h4{ font-size:18px; font-weight:700; margin-bottom:8px; }
.why-block p{ font-size:14.5px; color:var(--silver); }

/* ===================== PROJECTS / GALLERY ===================== */
.projects{ padding:130px 0; background:var(--graphite); }
.gallery-grid{
  columns:3 260px;
  column-gap:20px;
}
.gallery-item{
  position:relative;
  break-inside:avoid;
  margin-bottom:20px;
  border-radius:6px;
  overflow:hidden;
  cursor:zoom-in;
  border:1px solid rgba(255,255,255,0.08);
}
.gallery-item img{ width:100%; display:block; transition:transform .6s var(--ease); }
.gallery-item:hover img{ transform:scale(1.06); }
.gallery-item::before{
  content:'';
  position:absolute; inset:0;
  background:linear-gradient(0deg, rgba(6,7,8,0.85) 0%, rgba(6,7,8,0) 45%);
  opacity:0; transition:opacity .4s var(--ease);
}
.gallery-item:hover::before{ opacity:1; }
.gallery-cap{
  position:absolute; left:0; right:0; bottom:0; padding:18px;
  font-family:var(--font-display); font-size:13px; font-weight:600; letter-spacing:0.4px;
  color:var(--white);
  opacity:0; transform:translateY(8px);
  transition:opacity .4s var(--ease), transform .4s var(--ease);
  z-index:2;
}
.gallery-item:hover .gallery-cap{ opacity:1; transform:translateY(0); }
.gallery-more{ text-align:center; margin-top:50px; }

/* Lightbox */
.lightbox{
  position:fixed; inset:0; z-index:2000;
  background:rgba(4,5,6,0.97);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden;
  transition:opacity .4s var(--ease), visibility .4s;
  padding:40px;
}
.lightbox.open{ opacity:1; visibility:visible; }
.lightbox figure{ margin:0; max-width:1100px; max-height:88vh; text-align:center; }
.lightbox img{ max-width:100%; max-height:78vh; margin:0 auto; border-radius:4px; box-shadow:0 30px 80px rgba(0,0,0,0.6); }
.lightbox figcaption{ color:var(--silver); font-size:13.5px; margin-top:16px; letter-spacing:0.4px; }
.lightbox-close, .lightbox-nav{
  position:absolute; background:var(--glass-bg); border:1px solid var(--glass-border);
  width:48px; height:48px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  color:var(--white); backdrop-filter:blur(8px);
  transition:background .3s var(--ease), transform .3s var(--ease);
}
.lightbox-close:hover, .lightbox-nav:hover{ background:rgba(255,255,255,0.14); }
.lightbox-close{ top:28px; right:28px; }
.lightbox-nav.prev{ left:28px; top:50%; transform:translateY(-50%); }
.lightbox-nav.next{ right:28px; top:50%; transform:translateY(-50%); }
.lightbox-nav svg, .lightbox-close svg{ width:20px; height:20px; }

/* ===================== PROCESS ===================== */
.process{ padding:140px 0; background:var(--black); }
.process-track{ position:relative; margin-top:70px; }
.process-track::before{
  content:''; position:absolute; top:26px; left:0; right:0; height:1px;
  background:linear-gradient(90deg, rgba(191,195,199,0.5), rgba(191,195,199,0.08));
}
.process-steps{ display:grid; grid-template-columns:repeat(5,1fr); gap:24px; position:relative; }
.process-step{ position:relative; padding-top:56px; }
.process-step .dot{
  position:absolute; top:12px; left:0; width:28px; height:28px; border-radius:50%;
  background:var(--graphite); border:1px solid rgba(255,255,255,0.25);
  display:flex; align-items:center; justify-content:center;
}
.process-step .dot::after{ content:''; width:8px; height:8px; border-radius:50%; background:var(--silver-grad); }
.process-step .num{ font-family:var(--font-display); font-size:12px; letter-spacing:2px; color:var(--silver); margin-bottom:10px; display:block; }
.process-step h4{ font-size:17px; font-weight:700; margin-bottom:10px; }
.process-step p{ font-size:14px; color:var(--silver); }

/* ===================== CTA ===================== */
.cta-band{
  position:relative;
  padding:150px 0;
  overflow:hidden;
}
.cta-media{ position:absolute; inset:0; z-index:0; }
.cta-media img{ width:100%; height:100%; object-fit:cover; }
.cta-media::after{ content:''; position:absolute; inset:0; background:linear-gradient(180deg, rgba(24,26,28,0.62), rgba(24,26,28,0.72)); }
.cta-band .container{ position:relative; z-index:1; text-align:center; max-width:760px; }
.cta-panel{
  background:rgba(219,222,225,0.72);
  border:1px solid rgba(255,255,255,0.55);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  border-radius:16px;
  padding:56px 48px;
  box-shadow:0 30px 60px -24px rgba(10,11,12,0.45);
}
.cta-panel .eyebrow{ color:var(--ink-mute); }
.cta-panel .eyebrow::before{ background:var(--metal-dark-grad); }
.cta-band h2{ font-size:clamp(28px,4vw,46px); font-weight:700; line-height:1.2; margin:18px 0 8px; color:var(--ink); }
.cta-band .lead{ font-family:var(--font-display); font-size:19px; color:var(--ink-soft); margin-bottom:40px; }
.cta-actions{ display:flex; gap:18px; justify-content:center; flex-wrap:wrap; }

/* ===================== CONTACT ===================== */
.contact{ padding:140px 0; background:var(--graphite); }
.contact-grid{ display:grid; grid-template-columns:0.85fr 1.15fr; gap:70px; }
.contact-info h2{ font-size:clamp(28px,3.6vw,40px); font-weight:700; margin:16px 0 18px; line-height:1.2; }
.contact-info p{ color:var(--silver); font-size:16.5px; margin-bottom:34px; }
.contact-detail{ display:flex; gap:18px; padding:22px 0; border-top:1px solid rgba(255,255,255,0.08); }
.contact-detail:last-of-type{ border-bottom:1px solid rgba(255,255,255,0.08); }
.contact-detail .ic{ flex:none; width:44px; height:44px; border-radius:50%; background:var(--glass-bg); border:1px solid var(--glass-border); display:flex; align-items:center; justify-content:center; }
.contact-detail .ic svg{ width:19px; height:19px; stroke:var(--silver); }
.contact-detail .label{ font-size:11.5px; letter-spacing:1.6px; text-transform:uppercase; color:var(--silver); margin-bottom:4px; }
.contact-detail .value{ font-size:16.5px; color:var(--white); font-weight:600; }

.contact-form{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(14px);
  border-radius:10px;
  padding:44px;
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.field{ margin-bottom:22px; }
.field label{ display:block; font-size:12px; letter-spacing:1.4px; text-transform:uppercase; color:var(--silver); margin-bottom:9px; }
.field input, .field select, .field textarea{
  width:100%;
  background:rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.16);
  border-radius:4px;
  padding:14px 16px;
  color:var(--white);
  font-family:var(--font-body);
  font-size:15px;
  transition:border-color .3s var(--ease), background .3s var(--ease);
}
.field select{ appearance:none; background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23BFC3C7' stroke-width='2'><polyline points='6 9 12 15 18 9'/></svg>"); background-repeat:no-repeat; background-position:right 14px center; }
.field select option{ color:#141618; background:#FFFFFF; }
.field select option:disabled{ color:#9a9d9f; }
.field input::placeholder, .field textarea::placeholder{ color:#7d8285; }
.field input:focus, .field select:focus, .field textarea:focus{ outline:none; border-color:var(--silver); background:rgba(255,255,255,0.07); }
.field textarea{ min-height:130px; resize:vertical; }
.form-note{ font-size:12.5px; color:#7d8285; margin-top:6px; }
.form-success{
  display:none;
  align-items:center; gap:14px;
  padding:18px 20px; margin-top:18px;
  border:1px solid rgba(255,255,255,0.18);
  border-radius:6px;
  background:rgba(255,255,255,0.05);
  color:var(--light-silver);
  font-size:14.5px;
}
.form-success.show{ display:flex; }
.form-success svg{ flex:none; width:22px; height:22px; stroke:var(--silver); }

/* ===================== FOOTER ===================== */
.site-footer{
  background:
    radial-gradient(900px 420px at 85% 0%, rgba(255,255,255,0.5), transparent 60%),
    linear-gradient(180deg, var(--base-silver-1) 0%, var(--base-silver-2) 100%);
  border-top:1px solid var(--line-on-light);
  padding:80px 0 30px;
}
.footer-top{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:60px; padding-bottom:56px; }
.footer-brand .brand{ margin-bottom:18px; }
.footer-brand .tagline{ font-family:var(--font-display); font-size:14px; letter-spacing:1px; color:var(--ink-mute); margin-bottom:20px; }
.footer-brand p{ font-size:14px; color:var(--ink-mute); max-width:320px; }
.footer-col h5{ font-family:var(--font-display); font-size:12.5px; letter-spacing:2px; text-transform:uppercase; color:var(--ink); margin-bottom:22px; }
.footer-col ul li{ margin-bottom:13px; }
.footer-col ul li a{ font-size:14.5px; color:var(--ink-soft); transition:color .3s var(--ease); }
.footer-col ul li a:hover{ color:var(--ink); }
.footer-bottom{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:14px;
  padding-top:28px; border-top:1px solid var(--line-on-light);
  font-size:13px; color:var(--ink-mute);
}
.footer-bottom a{ color:var(--ink-mute); }
.footer-bottom a:hover{ color:var(--ink); }
.footer-legal{ display:flex; gap:24px; }

/* ===================== RESPONSIVE ===================== */
@media (max-width:1080px){
  .services-grid{ grid-template-columns:repeat(2,1fr); }
  .expertise-grid{ grid-template-columns:repeat(2,1fr); }
  .process-steps{ grid-template-columns:repeat(3,1fr); row-gap:50px; }
  .process-track::before{ display:none; }
  .contact-grid{ grid-template-columns:1fr; gap:50px; }
  .footer-top{ grid-template-columns:1fr 1fr; row-gap:40px; }
}

@media (max-width:860px){
  .main-nav, .header-cta{ display:none; }
  .burger{ display:flex; }
  .intro-grid{ grid-template-columns:1fr; gap:44px; }
  .intro-media img{ height:360px; }
  .services-grid{ grid-template-columns:1fr; }
  .service-card{ height:340px; }
  .why-grid{ grid-template-columns:1fr; }
  .process-steps{ grid-template-columns:1fr 1fr; }
  .gallery-grid{ columns:2 200px; }
  .form-row{ grid-template-columns:1fr; }
  .footer-top{ grid-template-columns:1fr; }
  .cta-actions{ flex-direction:column; align-items:stretch; }
}

@media (max-width:560px){
  .container{ padding:0 20px; }
  .hero-content{ padding-top:96px; }
  .hero-panel{ padding:30px 26px; }
  .cta-panel{ padding:36px 26px; }
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-actions .btn{ width:100%; }
  .intro, .services, .expertise, .why, .projects, .process, .contact, .cta-band{ padding:80px 0; }
  .expertise-grid{ grid-template-columns:1fr; }
  .process-steps{ grid-template-columns:1fr; }
  .contact-form{ padding:28px; }
  .gallery-grid{ columns:1 100%; }
  .footer-bottom{ flex-direction:column; align-items:flex-start; }
}

@media (max-height:700px){
  .hero-scroll{ display:none; }
  .hero-actions{ margin-bottom:0; }
}

/* ===================================================================
   BASE ARGENT — sections claires (métal brossé), texte sombre.
   Le Hero, le bandeau CTA, le header et le footer restent sombres
   pour l'effet "structure noire / socle argenté".
=================================================================== */
.light-section{
  background:
    radial-gradient(900px 420px at 12% -10%, rgba(255,255,255,0.55), transparent 60%),
    linear-gradient(180deg, var(--base-silver-1) 0%, var(--base-silver-2) 100%);
  color:var(--ink-soft);
}
.light-section:nth-of-type(even){
  background:
    radial-gradient(900px 420px at 88% -10%, rgba(255,255,255,0.5), transparent 60%),
    linear-gradient(180deg, var(--base-silver-2) 0%, var(--base-silver-1) 100%);
}
.light-section h1, .light-section h2, .light-section h3, .light-section h4{ color:var(--ink); }
.light-section .eyebrow{ color:var(--ink-mute); }
.light-section .eyebrow::before{ background:var(--metal-dark-grad); }
.light-section .silver-line{ background:var(--metal-dark-grad); }
.light-section .section-head p{ color:var(--ink-soft); }

/* Intro */
.light-section.intro .intro-text p{ color:var(--ink-soft); }
.light-section.intro .intro-stats div strong{
  background:var(--metal-dark-grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.light-section.intro .intro-stats div span{ color:var(--ink-mute); }
.light-section.intro .intro-media .frame{ border-color:var(--line-on-light-strong); box-shadow:0 30px 60px -30px rgba(20,22,24,0.35); }

/* Services (section band only — cards stay dark/self-contained) */
.light-section.services{ }

/* Savoir-faire / expertise */
.light-section.expertise .expertise-grid{ background:var(--line-on-light); border-color:var(--line-on-light); }
.light-section.expertise .expertise-item{ background:var(--panel); }
.light-section.expertise .expertise-item:hover{ background:var(--panel-strong); }
.light-section.expertise .expertise-item .num{
  background:var(--metal-dark-grad); -webkit-background-clip:text; background-clip:text; color:transparent;
}
.light-section.expertise .expertise-item p{ color:var(--ink-soft); }

/* Pourquoi nous choisir */
.light-section.why .why-block{ background:var(--panel); border-color:var(--line-on-light); }
.light-section.why .why-block:hover{ background:var(--panel-strong); border-color:var(--line-on-light-strong); }
.light-section.why .why-icon{ background:var(--glass-bg-light); border-color:var(--glass-border-light); }
.light-section.why .why-icon svg{ stroke:var(--ink-soft); }
.light-section.why .why-block p{ color:var(--ink-soft); }

/* Réalisations */
.light-section.projects .gallery-item{ border-color:var(--line-on-light); box-shadow:0 14px 30px -18px rgba(20,22,24,0.25); }
.light-section.projects .gallery-more .btn-ghost{
  background:rgba(10,11,12,0.03); border-color:var(--line-on-light-strong); color:var(--ink);
}
.light-section.projects .gallery-more .btn-ghost:hover{ background:rgba(10,11,12,0.08); border-color:var(--ink-mute); }

/* Processus */
.light-section.process .process-track::before{ background:linear-gradient(90deg, rgba(20,22,24,0.5), rgba(20,22,24,0.06)); }
.light-section.process .process-step .dot{ background:var(--panel); border-color:var(--line-on-light-strong); }
.light-section.process .process-step .num{ color:var(--ink-mute); }
.light-section.process .process-step p{ color:var(--ink-soft); }

/* Contact */
.light-section.contact .contact-info p{ color:var(--ink-soft); }
.light-section.contact .contact-detail{ border-color:var(--line-on-light); }
.light-section.contact .contact-detail .ic{ background:var(--glass-bg-light); border-color:var(--glass-border-light); }
.light-section.contact .contact-detail .ic svg{ stroke:var(--ink-soft); }
.light-section.contact .contact-detail .label{ color:var(--ink-mute); }
.light-section.contact .contact-detail .value{ color:var(--ink); }
.light-section.contact .contact-detail .value a{ color:var(--ink); }

.light-section.contact .contact-form{
  background:rgba(255,255,255,0.55);
  border-color:var(--line-on-light-strong);
}
.light-section.contact .field label{ color:var(--ink-mute); }
.light-section.contact .field input,
.light-section.contact .field select,
.light-section.contact .field textarea{
  background:rgba(255,255,255,0.7);
  border-color:var(--line-on-light-strong);
  color:var(--ink);
}
.light-section.contact .field input::placeholder,
.light-section.contact .field textarea::placeholder{ color:#8a8e92; }
.light-section.contact .field input:focus,
.light-section.contact .field select:focus,
.light-section.contact .field textarea:focus{
  border-color:var(--ink-mute); background:rgba(255,255,255,0.9);
}
.light-section.contact .field select{
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%234A4E52' stroke-width='2'><polyline points='6 9 12 15 18 9'/></svg>");
}
.light-section.contact .form-note{ color:var(--ink-mute); }
.light-section.contact .form-success{
  border-color:var(--line-on-light-strong);
  background:rgba(255,255,255,0.6);
  color:var(--ink-soft);
}
.light-section.contact .form-success svg{ stroke:var(--ink-soft); }

/* Service cards keep light/white text over their own dark photo scrim,
   regardless of the light-section (silver base) text-color rules. */
.light-section.services .service-inner h3{ color:var(--white); }
.light-section.services .service-inner p{ color:var(--light-silver); }
.light-section.services .service-num{ color:var(--light-silver); }
.light-section.services .service-more{ color:var(--white); }
.light-section.services .service-card:hover .service-more{ color:var(--white); }