/* -----------------------------
   Base
------------------------------ */
:root{
  --bg: #070A12;
  --bg2:#0B1022;
  --card:#0F1730;
  --card2:#0C1328;
  --text:#EAF0FF;
  --muted:#A8B3D6;
  --line: rgba(255,255,255,.10);
  --shadow: 0 20px 60px rgba(0,0,0,.35);

  --accent1:#19D2FF;
  --accent2:#2E6BFF;
  --accent3:#00FFA8;

  --radius: 18px;
  --radius2: 26px;

  --max: 1120px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 700px at 15% 5%, rgba(46,107,255,.22), transparent 60%),
              radial-gradient(1000px 600px at 85% 15%, rgba(25,210,255,.18), transparent 55%),
              radial-gradient(900px 600px at 55% 90%, rgba(0,255,168,.10), transparent 60%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  color: var(--text);
  line-height: 1.45;
}

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }

.container{
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

/* -----------------------------
   Header
------------------------------ */
.header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(6, 8, 14, 0.75); /* gris/noir neutre */
  border-bottom: 1px solid rgba(255,255,255,0.12); 
}

.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{
  display:flex;
  align-items:center;
  padding: 8px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(0,0,0,0.06);
}
.brand__logo{
  height: 44px;
  width: auto;
}

.nav{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.03);
}

.nav__link{
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
  transition: all .2s ease;
}

.nav__link:hover{
  background: rgba(255,255,255,.06);
  color: var(--text);
}

.nav__link.is-active{
  background: linear-gradient(135deg, rgba(25,210,255,.18), rgba(46,107,255,.18));
  border: 1px solid rgba(25,210,255,.25);
  color: var(--text);
}

.header__cta{
  display: none;
}

/* -----------------------------
   Buttons
------------------------------ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: .2px;
  cursor: pointer;
  transition: transform .12s ease, background .2s ease, border-color .2s ease;
  user-select: none;
}

.btn:active{ transform: translateY(1px); }

.btn--primary{
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  box-shadow: 0 12px 32px rgba(46,107,255,.22);
  color: #031021;
}

.btn--primary:hover{
  filter: brightness(1.05);
}

.btn--ghost{
  background: rgba(255,255,255,.04);
  border-color: var(--line);
  color: var(--text);
}

.btn--ghost:hover{
  background: rgba(255,255,255,.07);
}

/* -----------------------------
   Hero
------------------------------ */
.hero{
  position: relative;
  padding: 56px 0 26px;
  overflow:hidden;
}

.hero__inner{
  display:grid;
  grid-template-columns: 1.35fr .95fr;
  gap: 28px;
  align-items: start;
}

.hero__bg{
  position:absolute;
  inset: 0;
  background:
    radial-gradient(650px 350px at 30% 30%, rgba(25,210,255,.12), transparent 70%),
    radial-gradient(650px 350px at 70% 40%, rgba(46,107,255,.10), transparent 70%);
  pointer-events:none;
}

.badge{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}

h1{
  margin: 14px 0 10px;
  font-size: clamp(28px, 3.2vw, 46px);
  line-height: 1.08;
  letter-spacing: -0.6px;
}

.grad{
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 64ch;
}

.hero__actions{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 16px 0 18px;
}

.kpis{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.kpi{
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: var(--radius);
  padding: 14px;
}

.kpi__value{
  font-weight: 900;
  letter-spacing: .3px;
}

.kpi__label{
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

/* -----------------------------
   Panel / Cards
------------------------------ */
.panel, .card{
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
}

.panel{
  padding: 18px;
}

.panel h2{
  margin: 0 0 10px;
  font-size: 18px;
}

.checklist{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.checklist li{ margin: 8px 0; }

.panel__hint{
  margin-top: 12px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.18);
  color: var(--muted);
  font-size: 13px;
}

/* -----------------------------
   Sections
------------------------------ */
.section{
  padding: 42px 0;
}

.section--alt{
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section__head{
  margin-bottom: 18px;
}

.section__head h2{
  margin: 0 0 6px;
  font-size: 26px;
  letter-spacing: -0.2px;
}

.section__head p{
  margin: 0;
  color: var(--muted);
}

/* Grid cards */
.grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card{
  padding: 18px;
}

.card h3{
  margin: 0 0 8px;
  font-size: 18px;
}

.card p{
  margin: 0 0 12px;
  color: var(--muted);
}

.bullets{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.bullets li{ margin: 7px 0; }

.card--soft{
  background: linear-gradient(180deg, rgba(25,210,255,.07), rgba(255,255,255,.02));
}

/* Steps */
.steps{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 12px;
}

.step{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255,255,255,.03);
}

.step__num{
  width: 34px;
  height: 34px;
  display:grid;
  place-items:center;
  border-radius: 12px;
  font-weight: 900;
  color: #031021;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  margin-bottom: 10px;
}

.step__body h3{
  margin: 0 0 6px;
  font-size: 16px;
}

.step__body p{
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* Callout */
.callout{
  margin-top: 18px;
  padding: 16px;
  border: 1px solid rgba(25,210,255,.22);
  border-radius: var(--radius2);
  background: linear-gradient(135deg, rgba(25,210,255,.10), rgba(46,107,255,.08));
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
}

.callout h3{ margin: 0 0 6px; }
.callout p{ margin: 0; color: var(--muted); }

/* Contact */
.contact{
  display:grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 16px;
  align-items: start;
}

.muted{ color: var(--muted); }

.dl{
  margin: 12px 0 0;
  display:grid;
  gap: 10px;
}
.dl__row{
  display:grid;
  grid-template-columns: 130px 1fr;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255,255,255,.10);
}
.dl__row:last-child{ border-bottom: none; }

.link{
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: rgba(25,210,255,.35);
  text-underline-offset: 3px;
}

.field{
  display:grid;
  gap: 8px;
  margin: 12px 0;
}
.field span{
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}
input, textarea{
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.25);
  color: var(--text);
  outline: none;
}
input:focus, textarea:focus{
  border-color: rgba(25,210,255,.35);
  box-shadow: 0 0 0 4px rgba(25,210,255,.08);
}

/* Footer */
.footer{
  border-top: 1px solid var(--line);
  padding: 22px 0;
  background: rgba(0,0,0,.18);
}

.footer__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 16px;
}

.footer__left{
  display:flex;
  align-items:center;
  gap: 12px;
}

.footer__logo{
  height: 34px;
  width:auto;
  opacity: .95;
}

.footer__title{
  font-weight: 900;
  letter-spacing: .2px;
}

.footer__sub{
  color: var(--muted);
  font-size: 13px;
}

.footer__right{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-wrap: wrap;
}

.sep{ opacity: .55; }

/* -----------------------------
   Responsive
------------------------------ */
@media (min-width: 980px){
  .header__cta{ display:inline-flex; }
}

@media (max-width: 980px){
  .hero__inner{
    grid-template-columns: 1fr;
  }
  .grid{
    grid-template-columns: 1fr;
  }
  .steps{
    grid-template-columns: 1fr 1fr;
  }
  .contact{
    grid-template-columns: 1fr;
  }
  .nav{
    overflow:auto;
    max-width: 62vw;
  }
}

@media (max-width: 520px){
  .kpis{
    grid-template-columns: 1fr;
  }
  .steps{
    grid-template-columns: 1fr;
  }
}