/* ============================================================
   GAS Luxembourg — Feuille de style commune
   Palette : blanc & bleu — image sérieuse et institutionnelle
   ============================================================ */

:root {
  --navy:        #0A2540;   /* texte titres, fond foncé */
  --navy-soft:   #102f53;
  --primary:     #15508C;   /* bleu principal */
  --accent:      #2D7FF9;   /* bleu vif accent */
  --accent-2:    #5AA0FF;
  --light:       #F4F8FD;   /* fond bleuté très clair */
  --light-2:     #EAF1FB;
  --border:      #E2E9F2;
  --text:        #3B4858;   /* corps de texte */
  --muted:       #6B7787;
  --white:       #FFFFFF;
  --shadow:      0 18px 50px -22px rgba(10, 37, 64, 0.28);
  --shadow-sm:   0 8px 24px -14px rgba(10, 37, 64, 0.30);
  --radius:      16px;
  --radius-sm:   10px;
  --maxw:        1180px;
  --ease:        cubic-bezier(.22,.61,.36,1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  color: var(--navy);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.01em;
}

a { color: var(--primary); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .01em;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all .25s var(--ease);
  font-family: 'Manrope', sans-serif;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 28px -12px rgba(45,127,249,.7);
}
.btn-primary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--navy);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn-light {
  background: rgba(255,255,255,.12);
  color: #fff;
  border-color: rgba(255,255,255,.35);
  backdrop-filter: blur(4px);
}
.btn-light:hover { background: #fff; color: var(--navy); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Manrope', sans-serif;
}
/* ---- Logo lockup (marque) ---- */
.logo-lockup { display: inline-flex; flex-direction: column; align-items: center; line-height: 1; padding-top: 4px; }
.logo-lockup .wm {
  position: relative;
  font-family: 'Playfair Display', Georgia, serif; font-weight: 700;
  font-size: 28px; letter-spacing: .14em; color: #fff; padding-left: .14em;
}
.logo-lockup .wm .peak {
  position: absolute; left: 50%; top: -15px; transform: translateX(-50%);
  width: 28px; height: 21px; pointer-events: none;
}
.logo-lockup .sub {
  font-family: 'Inter', sans-serif; font-weight: 500; font-size: 9.5px;
  letter-spacing: .46em; color: #eaf1fb; margin-top: 6px; padding-left: .46em;
}
.logo-lockup .tri { display: flex; gap: 5px; margin-top: 7px; }
.logo-lockup .tri i { width: 17px; height: 3px; border-radius: 1px; display: block; }
.logo-lockup.dark .wm, .logo-lockup.dark .sub { color: var(--navy); }

.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; }
.nav-links a {
  color: #d7e2f0;
  font-weight: 600;
  font-size: 15px;
  padding: 9px 15px;
  border-radius: 8px;
  font-family: 'Manrope', sans-serif;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.nav-links a:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-links a.active { color: #fff; }
.nav-cta { margin-left: 10px; }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: .3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(45,127,249,.18), transparent 60%),
    linear-gradient(180deg, var(--light) 0%, #fff 100%);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
  padding: 86px 0 96px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Manrope', sans-serif;
  font-size: 13px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--primary);
  background: var(--light-2); padding: 7px 15px; border-radius: 999px;
  border: 1px solid var(--border);
}
.hero h1 { font-size: clamp(2.3rem, 4.4vw, 3.5rem); margin: 22px 0 20px; }
.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), var(--primary));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead { font-size: 1.18rem; color: var(--muted); max-width: 540px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Visuel hero : carte skyline */
.hero-visual {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background: linear-gradient(160deg, var(--navy) 0%, var(--primary) 100%);
  min-height: 420px;
  display: flex; align-items: flex-end;
}
.hero-visual .glass-stat {
  position: absolute; top: 22px; left: 22px;
  background: rgba(255,255,255,.14);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 14px; padding: 16px 20px; color: #fff;
}
.hero-visual .glass-stat b { font-size: 28px; font-family: 'Playfair Display', Georgia, serif; font-weight: 700; display:block; }
.hero-visual .glass-stat span { font-size: 12.5px; opacity: .85; letter-spacing: .04em; }
.hero-visual svg { width: 100%; display: block; }

/* ---------- Sections génériques ---------- */
.section { padding: 92px 0; }
.section.alt { background: var(--light); }
.section.dark { background: var(--navy); color: #cdd8e6; }
.section.dark h2, .section.dark h3 { color: #fff; }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { font-size: clamp(1.9rem, 3.2vw, 2.6rem); margin-bottom: 16px; }
.section-head p { color: var(--muted); font-size: 1.08rem; }

/* ---------- Grilles & cartes ---------- */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card .ic {
  width: 54px; height: 54px; border-radius: 14px;
  background: var(--light-2); color: var(--accent);
  display: grid; place-items: center; margin-bottom: 20px;
}
.card .ic svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: .98rem; }

/* Cartes pôles (mise en avant) */
.pillar {
  position: relative;
  border-radius: 20px;
  padding: 44px 40px;
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow);
  min-height: 320px;
  display: flex; flex-direction: column; justify-content: flex-end;
}
.pillar.real { background: linear-gradient(155deg, var(--navy), var(--primary)); }
.pillar.advisory { background: linear-gradient(155deg, var(--primary), var(--accent)); }
.pillar .tag {
  position: absolute; top: 26px; left: 40px;
  font-family: 'Manrope', sans-serif; font-size: 12px; font-weight: 700;
  letter-spacing: .16em; text-transform: uppercase;
  background: rgba(255,255,255,.16); padding: 6px 13px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.28);
}
.pillar h3 { color: #fff; font-size: 1.7rem; margin-bottom: 12px; }
.pillar p { color: rgba(255,255,255,.85); margin-bottom: 22px; }
.pillar a { color: #fff; font-weight: 700; font-family: 'Manrope', sans-serif; display:inline-flex; align-items:center; gap:8px; }
.pillar a:hover { gap: 13px; color:#fff; }

/* ---------- Liste à puces stylée ---------- */
.ticks { list-style: none; }
.ticks li { position: relative; padding: 9px 0 9px 34px; color: var(--text); border-bottom: 1px solid var(--border); }
.ticks li:last-child { border-bottom: none; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: 14px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--light-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232D7FF9' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / 12px no-repeat;
}

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 30px; text-align: center; }
.stat b { font-family: 'Playfair Display', Georgia, serif; font-weight: 700; font-size: clamp(2.1rem, 4vw, 3rem); color: var(--navy); display: block; letter-spacing: -.02em; }
.section.dark .stat b { color: #fff; }
.stat span { font-size: .95rem; color: var(--muted); }
.section.dark .stat span { color: #9fb2c8; }

/* ---------- Process (étapes) ---------- */
.steps { counter-reset: step; display: grid; gap: 22px; }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 22px; align-items: start; }
.step .num {
  counter-increment: step;
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--navy); color: #fff;
  display: grid; place-items: center; font-family: 'Manrope', sans-serif; font-weight: 800; font-size: 20px;
}
.step .num::before { content: counter(step, decimal-leading-zero); }
.step h3 { font-size: 1.18rem; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: .98rem; }

/* ---------- Split (texte + visuel) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split .visual {
  border-radius: 20px; min-height: 380px; box-shadow: var(--shadow);
  background: linear-gradient(160deg, var(--navy), var(--primary));
  position: relative; overflow: hidden;
}
.split .visual.advisory { background: linear-gradient(160deg, var(--primary), var(--accent)); }

/* ---------- Bandeau CTA ---------- */
.cta-band {
  background: linear-gradient(135deg, var(--navy) 0%, var(--primary) 100%);
  border-radius: 24px;
  padding: 60px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band h2 { color: #fff; font-size: clamp(1.8rem,3vw,2.4rem); margin-bottom: 14px; }
.cta-band p { color: rgba(255,255,255,.85); max-width: 560px; margin: 0 auto 30px; }

/* ---------- Formulaire ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { font-family: 'Manrope', sans-serif; font-weight: 600; font-size: 14px; color: var(--navy); }
.field input, .field select, .field textarea {
  padding: 13px 16px; border: 1.5px solid var(--border); border-radius: 10px;
  font-family: inherit; font-size: 15px; color: var(--navy); background: #fff;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px rgba(45,127,249,.12);
}
.field textarea { resize: vertical; min-height: 130px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy); color: #aebfd2; padding: 64px 0 28px;
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, #C8362F 0 33.33%, #eef2f8 33.33% 66.66%, #2D7FF9 66.66% 100%) 1;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 44px; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 18px; letter-spacing: .02em; }
.site-footer ul { list-style: none; }
.site-footer ul li { margin-bottom: 11px; }
.site-footer a { color: #aebfd2; font-size: 14.5px; }
.site-footer a:hover { color: #fff; }
.site-footer .brand-text strong { color: #fff; }
.site-footer .brand-text span { color: #7d93ac; }
.footer-about p { font-size: 14.5px; color: #93a6bd; margin-top: 18px; max-width: 320px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 24px; display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; font-size: 13.5px; color: #7d93ac;
}

/* ---------- Page header (pages internes) ---------- */
.page-hero {
  background:
    radial-gradient(900px 400px at 85% -20%, rgba(45,127,249,.16), transparent 60%),
    linear-gradient(180deg, var(--light), #fff);
  padding: 70px 0 64px;
  border-bottom: 1px solid var(--border);
}
.page-hero .eyebrow { margin-bottom: 18px; }
.page-hero h1 { font-size: clamp(2.1rem, 3.8vw, 3rem); margin-bottom: 16px; max-width: 760px; }
.page-hero p { font-size: 1.12rem; color: var(--muted); max-width: 620px; }
.breadcrumb { font-size: 13.5px; color: var(--muted); margin-bottom: 22px; font-family: 'Manrope', sans-serif; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }

/* ---------- Utilitaires ---------- */
.text-center { text-align: center; }
.mt-40 { margin-top: 40px; }
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { min-height: 320px; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
  .stats { grid-template-columns: repeat(2,1fr); gap: 36px 20px; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav-links {
    position: fixed; inset: 76px 0 auto 0;
    background: #fff; flex-direction: column; align-items: stretch;
    padding: 14px 20px 22px; gap: 2px; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transform: translateY(-130%); transition: transform .35s var(--ease); z-index: 99;
  }
  .nav-links.open { transform: none; }
  .nav-links a { padding: 13px 14px; color: var(--navy); }
  .nav-links a:hover { background: var(--light); color: var(--accent); }
  .nav-links a.active { color: var(--accent); }
  .nav-cta { margin: 8px 0 0; }
  .menu-toggle { display: block; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 44px 26px; }
  .section { padding: 64px 0; }
  .pillar { min-height: 260px; padding: 36px 28px; }
}