@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink: #0B2C57;          /* marine — bâti, titres, textes */
  --ink-deep: #071B36;     /* marine profond — grands aplats sombres uniquement */
  --ink-soft: #4A5A70;     /* gris de texte secondaire (charte) */
  --body-text: #26303C;    /* texte courant */
  --paper: #FFFFFF;        /* fond blanc dominant (charte 3.2) */
  --paper-raised: #FFFFFF;
  --tint: #F2F5F9;         /* fond clair — sections alternées, cartouches */
  --line: #D7E0EC;
  --line-soft: #E3E8EF;
  --brass: #1557D6;        /* signal — ondes, liens, données */
  --brass-dark: #0B2C57;   /* survol liens → marine */
  --sage: #1557D6;         /* alias signal (icônes, eyebrow) */
  --sage-soft: #F2F5F9;
  --wave-light: #7FA8F0;   /* onde claire — fonds foncés */
  --texture-pale: #E7EEFA; /* demi-cercles très pâles en fond */
  --alert-bg: #FBF3EA;
  --on-dark-soft: #B7CCF2; /* texte secondaire sur fond marine */

  --font-display: 'Space Grotesk', Helvetica Neue, Helvetica, Arial, sans-serif;
  --font-body: 'Space Grotesk', Helvetica Neue, Helvetica, Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', Menlo, 'Courier New', monospace;

  --max-w: 1180px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--body-text);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

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

.wrap{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Header ---------- */
header.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244,245,243,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand{
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark{ width: 34px; height: 34px; flex-shrink: 0; object-fit: contain; display: block; }
.brand-word{
  font-family: var(--font-display);
  font-size: 1.32rem;
  letter-spacing: -0.015em;
  line-height: 1;
}
.brand-word .em{ font-weight: 700; color: var(--ink); }
.brand-word .esura{ font-weight: 400; color: #5B7BA6; }
.brand-tagline{
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--brass);
  margin-top: 2px;
  display: block;
}

nav.main-nav{
  display: flex;
  align-items: center;
  gap: 28px;
}
nav.main-nav a{
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  white-space: nowrap;
}
nav.main-nav a:hover, nav.main-nav a.active{ color: var(--ink); }
nav.main-nav a.btn-primary{ color: #FFFFFF; }
nav.main-nav a.btn-primary:hover{ color: #FFFFFF; }
nav.main-nav a.active:not(.btn)::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 2px;
  background: var(--brass);
}

.lang-switch{
  display: flex;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-soft);
}
.lang-switch a, .lang-switch button{
  border: 1px solid var(--line);
  background: transparent;
  padding: 4px 9px;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-decoration: none;
  display: inline-block;
  line-height: 1.4;
}
.lang-switch a.current, .lang-switch button.current{
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.lang-switch a:hover:not(.current){ border-color: var(--brass); color: var(--ink); }

.nav-toggle{
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span{
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
}

.btn{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 3px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-body);
}
.btn-primary{ background: var(--ink); color: #FFFFFF; box-shadow: 0 6px 16px rgba(11,44,87,0.22); }
.btn-primary:hover{ background: #082144; transform: translateY(-2px); box-shadow: 0 10px 22px rgba(11,44,87,0.28); }
.btn-ghost{ background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--paper); transform: translateY(-2px); }
.btn{ transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease; }
.btn-sm{ padding: 9px 16px; font-size: 0.85rem; }

/* On a dark hero, ghost buttons need light borders */
.hero .btn-ghost{ border-color: rgba(255,255,255,0.55); color: #FFFFFF; }
.hero .btn-ghost:hover{ background: #FFFFFF; color: var(--ink); }
.btn-primary.active{ box-shadow: inset 0 0 0 2px var(--brass); }

/* ---------- Hero (fond sombre, diagonale, impact) ---------- */
.hero{
  position: relative;
  background: linear-gradient(160deg, #0B2C57 0%, #0A2549 45%, #071B36 100%);
  color: #FFFFFF;
  padding: 108px 0 140px;
  overflow: hidden;
}
.hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(720px 420px at 82% 18%, rgba(127,168,240,0.22), transparent 60%),
    radial-gradient(520px 420px at 8% 92%, rgba(21,87,214,0.20), transparent 65%);
  pointer-events: none;
}
.hero::after{
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 84px;
  background: var(--paper);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
}
.hero-grid{
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--brass);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}
.eyebrow::before{
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 0 4px rgba(21,87,214,0.18);
}
.hero .eyebrow{ color: var(--wave-light); }
.hero .eyebrow::before{ background: var(--wave-light); box-shadow: 0 0 0 4px rgba(127,168,240,0.28); }

h1{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.4rem, 4.4vw, 3.6rem);
  line-height: 1.07;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
  max-width: 18ch;
}
.hero h1{ animation: rise 0.7s ease both; }
.hero .lede{ animation: rise 0.7s ease 0.1s both; }
.hero .hero-ctas{ animation: rise 0.7s ease 0.2s both; }
@keyframes rise{
  from{ opacity: 0; transform: translateY(14px); }
  to{ opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce){
  .hero h1, .hero .lede, .hero .hero-ctas{ animation: none; }
}

.hero-tagline{
  font-family: var(--font-mono);
  font-size: 1.02rem;
  color: var(--wave-light);
  letter-spacing: 0.01em;
  margin: -8px 0 20px;
  max-width: 40ch;
}

.lede{
  font-size: 1.14rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 30px;
}
.hero .lede{ color: var(--on-dark-soft); }
.hero-ctas{ display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 20px;}
.hero-note{ font-size: 0.85rem; color: var(--ink-soft); }
.hero .hero-note{ color: #96B4E8; }

.trace-panel{
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
}
.trace-panel svg{ width: 100%; height: 100%; display:block; overflow: visible; }
.pulse-ring{
  fill: none;
  stroke: var(--brass);
  stroke-width: 1.6;
  transform-origin: center;
  transform-box: fill-box;
  animation: pulse 2.8s cubic-bezier(.2,.65,.35,1) infinite;
  opacity: 0;
}
.pulse-ring.r2{ animation-delay: 0.7s; }
.pulse-ring.r3{ animation-delay: 1.4s; }
@keyframes pulse{
  0%{ transform: scale(0.35); opacity: 0.9; }
  75%{ opacity: 0; }
  100%{ transform: scale(1); opacity: 0; }
}
.pulse-core{ fill: var(--brass); }
.pulse-core-ring{ fill: none; stroke: var(--wave-light); stroke-width: 1.2; opacity: 0.6; }
@media (prefers-reduced-motion: reduce){
  .pulse-ring{ animation: none; opacity: 0.35; transform: scale(0.7); }
}

.stat-row{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  padding: 40px 0 0;
}
.stat{ border-left: 3px solid var(--brass); padding-left: 16px; }
.stat-row .stat:nth-child(2){ border-left-color: var(--wave-light); }
.stat-row .stat:nth-child(3){ border-left-color: #0F3E85; }
.stat-row .stat:nth-child(4){ border-left-color: var(--ink); }
.stat .num{
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 6px;
  display: block;
}
.stat .label{ font-size: 0.86rem; color: var(--ink-soft); }

/* ---------- Sections ---------- */
section{ padding: 76px 0; }
section.alt{ background: var(--texture-pale); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head{ max-width: 62ch; margin-bottom: 44px; }
h2{
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.015em;
  font-size: clamp(1.6rem, 2.4vw, 2.15rem);
  margin: 0 0 14px;
}
h2 + p{ color: var(--ink-soft); font-size: 1.05rem; }
h3{ font-family: var(--font-display); font-weight: 500; letter-spacing: -0.01em; font-size: 1.28rem; margin: 0 0 10px;}

.photo-placeholder{
  aspect-ratio: 4/3;
  border: 1.5px dashed var(--line);
  border-radius: 6px;
  background: var(--tint);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--ink-soft);
  text-align: center;
  padding: 24px;
}
.photo-placeholder svg{ width: 40px; height: 40px; color: var(--brass); }
.photo-placeholder span{ font-size: 0.85rem; max-width: 22ch; }

.photo-frame{
  aspect-ratio: 3/4;
  border-radius: 6px;
  overflow: hidden;
}
.photo-frame img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Method steps */
.steps{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
.step{
  background: var(--paper-raised);
  padding: 30px 24px;
  border-top: 3px solid var(--brass);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.steps .step:nth-child(1){ border-top-color: var(--wave-light); }
.steps .step:nth-child(2){ border-top-color: var(--brass); }
.steps .step:nth-child(3){ border-top-color: #0F3E85; }
.steps .step:nth-child(4){ border-top-color: var(--ink); }
.step:hover{ transform: translateY(-4px); box-shadow: 0 12px 24px rgba(11,44,87,0.10); position: relative; z-index: 1; }
.step-num{
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  border-radius: 50%;
  background: var(--texture-pale);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--brass);
  font-weight: 500;
  margin-bottom: 14px;
}
.steps .step:nth-child(1) .step-num{ color: #3F6FC4; }
.steps .step:nth-child(3) .step-num{ color: #0F3E85; background: #E3EBFA; }
.steps .step:nth-child(4) .step-num{ color: var(--ink); background: #E7EBF1; }
.step h3{ font-size: 1.08rem; margin-bottom: 8px; }
.step p{ font-size: 0.92rem; color: var(--ink-soft); margin: 0; }

/* Segment cards */
.segments{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.segment-card{
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-top: 3px solid var(--brass);
  border-radius: 6px;
  padding: 28px 24px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.segment-card:hover{ border-color: var(--brass); transform: translateY(-4px); box-shadow: 0 14px 26px rgba(16,30,39,0.10); }
.segments .segment-card:nth-child(3n+2){ border-top-color: var(--ink); }
.segments .segment-card:nth-child(3n+3){ border-top-color: var(--wave-light); }
.segment-icon-badge{
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--texture-pale);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.segments .segment-card:nth-child(3n+2) .segment-icon-badge{ background: var(--sage-soft); }
.segments .segment-card:nth-child(3n+3) .segment-icon-badge{ background: #EAF1FD; }
.segment-icon{ width: 24px; height: 24px; color: var(--brass); }
.segments .segment-card:nth-child(3n+2) .segment-icon{ color: var(--ink); }
.segments .segment-card:nth-child(3n+3) .segment-icon{ color: #3F6FC4; }
.segment-card h3{ font-size: 1.05rem; margin-bottom: 8px; }
.segment-card p{ font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

/* Two column */
.two-col{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

/* Lists */
ul.plain{ margin: 0; padding: 0; list-style: none; }
ul.plain li{
  padding-left: 26px;
  position: relative;
  margin-bottom: 12px;
  color: var(--ink-soft);
  font-size: 0.97rem;
}
ul.plain li::before{
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 12px; height: 1px;
  background: var(--brass);
}

/* Table (tarifs) */
table.pricing{
  width: 100%;
  border-collapse: collapse;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}
table.pricing th, table.pricing td{
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
}
table.pricing th{
  background: linear-gradient(120deg, var(--ink) 0%, var(--ink-deep) 100%);
  color: var(--paper);
  font-weight: 700;
  font-size: 0.85rem;
}
table.pricing tr:last-child td{ border-bottom: none; }
table.pricing td.price{ font-family: var(--font-mono); font-weight: 500; color: var(--brass); white-space: nowrap; }

.note-box{
  background: var(--texture-pale);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brass);
  border-radius: 6px;
  padding: 20px 22px;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-top: 28px;
}

/* Quote / testimony */
.pull{
  border-left: 3px solid var(--brass);
  padding-left: 22px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--ink);
  max-width: 60ch;
}

/* CTA band */
.cta-band{
  background: linear-gradient(150deg, var(--ink) 0%, #0A2549 50%, var(--ink-deep) 100%);
  color: var(--paper);
  border-radius: 8px;
  padding: 48px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}
.cta-band::after{
  content: "";
  position: absolute;
  top: -60px; right: -60px;
  width: 220px; height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(127,168,240,0.28), transparent 70%);
}
.cta-band h2{ color: var(--paper); margin: 0 0 6px; }
.cta-band p{ color: #C7D0CF; margin: 0; font-size: 0.98rem; }
.cta-band .btn-primary{ background: #FFFFFF; color: var(--ink); box-shadow: none; }
.cta-band .btn-primary:hover{ background: var(--tint); color: var(--ink); }
.cta-band.cta-light{ background: linear-gradient(135deg, #FFFFFF 0%, var(--texture-pale) 100%); border: 1px solid var(--line); border-left: 4px solid var(--brass); }
.cta-band.cta-light::after{ display: none; }
.cta-band.cta-light .btn-primary{ background: var(--ink); color: #FFFFFF; box-shadow: 0 6px 16px rgba(11,44,87,0.22); }
.cta-band.cta-light .btn-primary:hover{ background: #082144; color: #FFFFFF; }

/* Footer */
footer.site-footer{
  border-top: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--wave-light), var(--brass), var(--ink)) 1;
  padding: 52px 0 30px;
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 36px;
}
.footer-grid h4{
  font-family: var(--font-body);
  font-size: 0.78rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--ink);
  margin: 0 0 14px;
  font-weight: 700;
}
.footer-grid a{ text-decoration: none; color: var(--ink-soft); display: block; margin-bottom: 8px; }
.footer-grid a:hover{ color: var(--ink); }
.footer-bottom{
  border-top: 1px solid var(--line);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
}

/* Page header (interior pages) */
.page-header{
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--line);
}
.page-header .eyebrow{ margin-bottom: 10px; }
.page-header h1{ max-width: 28ch; font-size: clamp(1.9rem, 3vw, 2.6rem); }
.page-header .lede{ max-width: 55ch; }

.breadcrumb{
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin-bottom: 18px;
}
.breadcrumb a{ text-decoration: none; color: var(--sage); }

/* Article */
article.post{ max-width: 72ch; }
article.post h2{ margin-top: 40px; }
article.post p{ color: var(--ink-soft); font-size: 1.02rem; }

/* Contact */
.contact-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-detail{ margin-bottom: 22px; }
.contact-detail .label{ font-size: 0.78rem; color: var(--sage); font-weight: 700; margin-bottom: 4px; }
.contact-detail .value{ font-size: 1.02rem; }
form.contact-form label{ display:block; font-size: 0.85rem; font-weight: 700; margin: 16px 0 6px; }
form.contact-form input, form.contact-form select, form.contact-form textarea{
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--paper-raised);
}
form.contact-form textarea{ min-height: 120px; resize: vertical; }

@media (max-width: 880px){
  .hero-grid, .two-col, .contact-grid{ grid-template-columns: 1fr; }
  .steps, .segments, .stat-row{ grid-template-columns: 1fr 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .trace-panel{ max-width: 260px; margin: 40px auto 0; }
  nav.main-nav{
    position: fixed; top: 73px; left:0; right:0; bottom:0;
    background: var(--paper); flex-direction: column; align-items: flex-start;
    padding: 28px 32px; gap: 20px; display: none; overflow-y:auto;
  }
  nav.main-nav.open{ display: flex; }
  .nav-toggle{ display: block; }
  .lang-switch{ order: 2; }
}
@media (max-width: 560px){
  .steps, .segments, .stat-row{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .cta-band{ flex-direction: column; align-items: flex-start; }
}