:root{
  /* palette noir + bleu */
  --bg: #07080F;             /* noir nuit */
  --bg-2: #0A1426;           /* bleu nuit */
  --card: rgba(10,12,22,0.9);
  --text: #ffffff;
  --muted: rgba(218,235,255,0.75);
  --accent: #2f7dff;
  --accent-soft: rgba(47,125,255,0.22);
  --border: rgba(120,160,220,0.22);
  --shadow: 0 16px 40px rgba(0,0,0,.35);

  --radius-lg: 20px;
  --radius-md: 14px;
  --space-section: clamp(1.8rem, 3vw, 2.5rem);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  line-height:1.7;
  color:var(--text);

  /* Dégradé “halo” bleu (propre) */
  background:
    radial-gradient(1100px 620px at 8% -12%, rgba(47,125,255,.28), transparent 60%),
    radial-gradient(900px 520px at 96% 4%, rgba(47,125,255,.18), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  min-height:100vh;
}
.wrap{
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* HEADER */
.site-header{
  position:sticky; top:0; z-index:20;
  backdrop-filter: blur(12px);
  background: rgba(7,8,15,0.7);
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  gap:1.5rem; min-height:68px;
}
.brand{display:flex; gap:14px; align-items:center}

/* Logo image (remplace l'ancien carré Q+) */
.logo-img{
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 14px 30px rgba(47,125,255,.35);
  background: rgba(255,255,255,.06);
  display: block;
}

.titles{display:flex; flex-direction:column; gap:2px}
.titles .app{font-weight:700;}
.titles .page{font-size:.78rem; color:var(--muted)}

.controls{display:flex; gap:10px}

/* BUTTONS */
.btn{
  font: inherit; cursor:pointer;
  border-radius:999px; padding:8px 16px;
  border:1px solid transparent;
  transition: transform .15s ease-out, box-shadow .15s ease-out, background .15s ease-out, border-color .15s ease-out;
  background:transparent; color:var(--text);
}
.btn.ghost{
  border-color: rgba(215,234,255,0.12);
  background: rgba(255,255,255,0.02);
}
.btn.ghost[aria-pressed="true"]{
  border-color: var(--accent);
  background: rgba(47,125,255,.12);
  box-shadow: 0 0 0 3px var(--accent-soft);
  transform: translateY(-1px);
}
.btn:hover{background: rgba(255,255,255,0.03); transform: translateY(-1px);}
.btn.link{
  border:0; padding:0; background:transparent;
  color:var(--muted); font-weight:500;
}
.btn.link:hover{color:#fff}

/* MAIN SPACING */
.main-content{
  padding-top: calc(var(--space-section) + 10px);
  padding-bottom: calc(var(--space-section) + 40px);
}
.hero{
  margin-bottom: calc(var(--space-section) + .3rem);
}
.h1{
  font-size: clamp(1.9rem, 3.6vw, 2.45rem);
  letter-spacing: -.01em;
}
.muted{color:var(--muted); margin-top: .5rem;}
.badges{
  display:flex; gap:12px; flex-wrap:wrap;
  margin-top: 16px;
}
.badge{
  font-size:.75rem; padding:8px 12px;
  border-radius:999px;
  border:1px solid rgba(223,239,255,0.14);
  background: rgba(14,20,34,0.55);
  color:#eff5ff;
  backdrop-filter: blur(2px);
}

/* GRID + spacing */
.grid{
  display:grid; gap:26px;
  margin-top:26px; margin-bottom:26px;
  grid-template-columns: 1fr;
}
@media (min-width: 920px){
  .grid{grid-template-columns: repeat(2, minmax(0,1fr));}
}

/* Base card (non-aero éventuellement) */
.card{
  background: var(--card);
  border:1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.35rem 1.25rem;
  box-shadow: 0 16px 38px rgba(0,0,0,.26);
  backdrop-filter: blur(6px);
  transition: transform .22s ease-out, box-shadow .22s ease-out, border .22s ease-out, filter .22s ease-out;
}
.card:hover{
  transform: translateY(-3px);
  box-shadow: 0 22px 48px rgba(0,0,0,.28);
  border-color: rgba(120,160,220,0.36);
}
.card h2{margin-top:0; margin-bottom:.55rem;}
.card p{margin-bottom:.8rem;}
.card + .card{margin-top:18px;}

/* AERO / GLASS (Frutiger-Aero) */
.card.aero{
  position: relative;
  overflow: hidden;
  background: rgba(12, 18, 32, 0.35);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);

  border: 1px solid rgba(255,255,255,0.18);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    0 8px 20px rgba(0,0,0,.25),
    0 1px 0 rgba(255,255,255,0.05);
  filter: saturate(110%);
}
.card.aero:hover{
  border-color: rgba(163,196,255,0.35);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.16),
    0 12px 28px rgba(0,0,0,.28),
    0 1px 0 rgba(255,255,255,0.06);
}

/* highlight supérieur */
.card.aero::before{
  content:"";
  position:absolute; inset:0;
  background:
    linear-gradient(to bottom,
      rgba(255,255,255,0.22) 0%,
      rgba(255,255,255,0.12) 8%,
      rgba(255,255,255,0.06) 16%,
      rgba(255,255,255,0.00) 38%);
  pointer-events:none;
  mix-blend-mode:screen;
}

/* micro-bruit */
.card.aero::after{
  content:"";
  position:absolute; inset:0;
  background-image:
    radial-gradient(rgba(255,255,255,0.06) 0.7px, transparent 0.7px),
    radial-gradient(rgba(255,255,255,0.035) 0.7px, transparent 0.7px);
  background-size: 12px 12px, 18px 18px;
  background-position: 0 0, 9px 6px;
  opacity: .18;
  pointer-events:none;
}

/* ruban de sheen animé */
.card.aero .sheen{
  position:absolute;
  top:-50%; left:-30%;
  width:60%; height:200%;
  background: linear-gradient(100deg,
    rgba(255,255,255,0) 0%,
    rgba(255,255,255,0.10) 28%,
    rgba(255,255,255,0.28) 35%,
    rgba(255,255,255,0.12) 42%,
    rgba(255,255,255,0) 60%);
  transform: translateX(-130%) rotate(8deg);
  filter: blur(1px);
  opacity:.35;
  pointer-events:none;
  animation: sheen-scan 5.5s ease-in-out infinite alternate;
}
@keyframes sheen-scan{
  0%   { transform: translateX(-130%) rotate(8deg); }
  100% { transform: translateX(130%) rotate(8deg); }
}
@media (prefers-reduced-motion: reduce){
  .card.aero .sheen{ animation: none; opacity: 0; }
}

/* TEXT */
ul{padding-left:1.15rem; margin: .45rem 0 .25rem;}
li{margin-bottom:.52rem}
a{color:#8dc3ff; text-decoration:none}
a:hover{text-decoration:underline}

/* TOP LINK */
.top-link{
  margin-top: 30px;
  display:flex;
  justify-content:flex-end;
}

/* FOOTER */
.site-footer{
  border-top:1px solid rgba(255,255,255,.05);
  background: rgba(7,8,15,.6);
}
.footer-inner{
  display:flex; justify-content:center; padding:22px 20px 34px;
}
.footer-inner small{color:var(--muted); font-size:.8rem}

/* PRINT */
@media print{
  .site-header, .site-footer, .controls, .top-link{display:none !important}
  body{background:#fff; color:#000}
  .card, .callout{border-color:#ddd; box-shadow:none; background:#fff}
}

/* MOBILE */
@media (max-width: 640px){
  .header-inner{flex-wrap:wrap; gap:1.05rem; padding:14px 0 12px}
  .main-content{padding-top: 2rem}
  .card{padding: 1.05rem 1.05rem 1.05rem}
  .hero{margin-bottom: 1.6rem}
  .wrap{padding: 0 14px}
}