/* =========================================================
   Design system partagé — pages Alarme & Vidéosurveillance
   Règles reprises À L'IDENTIQUE des blocs <style> de index.html
   (mêmes sélecteurs, mêmes valeurs, aucun renommage).
   index.html conserve sa propre copie inline et n'est pas modifié.
   ========================================================= */

:root{--ink:#0A1628;--paper:#FAFAF8;--accent:#3B82F6}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:#FAFAF8;color:#0A1628;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:#0A1628;text-decoration:none}
a:hover{opacity:.7}
::selection{background:#0A1628;color:#FAFAF8}
@keyframes fogdrift{0%{transform:translate3d(0,0,0) scale(1.05)}50%{transform:translate3d(-2%,1%,0) scale(1.12)}100%{transform:translate3d(0,0,0) scale(1.05)}}

/* ===== Fonds : profondeur ===== */
section.light{background:radial-gradient(120% 90% at 50% 0%, #FFFFFF 0%, #FAFAF8 46%, #F0EFEA 100%)}
section.dark{position:relative;color:#fff;background:linear-gradient(180deg,#0A1628 0%,#060D18 100%)}
section.dark::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.05;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");background-size:140px 140px}

/* ===== Barre de progression scroll ===== */
#scroll-progress{position:fixed;top:0;left:0;right:0;height:5px;background:var(--accent);transform:scaleX(0);transform-origin:left;z-index:120;pointer-events:none}

/* ===== Reveal au scroll (stagger géré en JS via transition-delay) ===== */
[data-reveal]{opacity:0;transform:translateY(40px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
[data-reveal].revealed{opacity:1;transform:none}

/* ===== Hero : dissipation du brouillard ===== */
@keyframes fogclear{from{opacity:0;filter:blur(16px);transform:translateY(18px)}to{opacity:1;filter:blur(0);transform:none}}
.hero-title{animation:fogclear 1.4s cubic-bezier(.16,1,.3,1) .15s both}
.hero-sub{animation:fogclear 1.4s cubic-bezier(.16,1,.3,1) .45s both}
.hero-cta{animation:fogclear 1.2s cubic-bezier(.16,1,.3,1) .7s both}

/* ===== Chiffres géants ===== */
.bignum{font-weight:200;line-height:.9;letter-spacing:-.05em;font-size:min(11rem, calc((100vw - 3rem) / 6.35))}
.tnum{font-variant-numeric:tabular-nums}
@keyframes punch{0%{transform:scale(.86)}60%{transform:scale(1.045)}100%{transform:scale(1)}}
.punch{animation:punch .5s cubic-bezier(.34,1.56,.64,1) both}

/* ===== Soulignement accent ===== */
.u-accent{color:#0A1628;background-image:linear-gradient(var(--accent),var(--accent));background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;transition:background-size .7s cubic-bezier(.16,1,.3,1) .3s;padding-bottom:2px}
.revealed .u-accent{background-size:100% 2px}

/* ===== Boutons & formulaire ===== */
.btn-primary-light:hover{transform:translateY(-2px) scale(1.03);box-shadow:0 8px 44px rgba(59,130,246,.35)!important}
.fld{transition:border-bottom-color .35s ease,opacity .5s ease,transform .5s ease}
.fld:focus{border-bottom-color:#3B82F6!important}
#step2 .fld{opacity:0;transform:translateY(14px)}
#step2.armed .fld{opacity:1;transform:none}
.pillgroup{display:flex;flex-wrap:wrap;gap:.7rem}
.pill{display:inline-flex;align-items:center;justify-content:center;padding:.75rem 1.4rem;border:1px solid rgba(255,255,255,.28);border-radius:100px;cursor:pointer;color:rgba(255,255,255,.85);font-weight:300;font-size:1rem;transition:background .2s,color .2s,border-color .2s;user-select:none}
.pill:hover{border-color:rgba(255,255,255,.55)}
.pill input{position:absolute;opacity:0;width:0;height:0;pointer-events:none}
.pill:has(input:checked){background:#fff;color:#0A1628;border-color:#fff;font-weight:500}

/* ===== Bandes de bénéfices ===== */
.benefits{max-width:1200px;margin:0 auto}
.benefit-band{min-height:40vh;display:flex;align-items:center;justify-content:space-between;gap:clamp(2rem,7vw,6rem)}
.benefit-band:nth-child(2){flex-direction:row-reverse}
.benefit-band:nth-child(2) .benefit-text{text-align:right}
.benefit-num{flex:0 0 auto;white-space:nowrap;font-weight:200;font-size:clamp(5rem,13vw,10rem);line-height:.9;letter-spacing:-.04em;color:#0A1628}
/* Variante pour un mot-clé plutôt qu'un chiffre court : « Vision nocturne » à
   la taille d'un « 20 ans » déborderait de la ligne (le slot est en nowrap). */
.benefit-num--mot{font-size:clamp(2.2rem,6.4vw,5rem);letter-spacing:-.03em}
.benefit-text{flex:0 1 480px}
.benefit-title{font-weight:400;font-size:clamp(1.5rem,3.2vw,2.3rem);letter-spacing:-.02em;line-height:1.12;color:#0A1628;text-wrap:balance}
.benefit-proof{margin-top:1rem;font-weight:300;font-size:clamp(1.05rem,1.9vw,1.25rem);line-height:1.55;color:#8a92a0;text-wrap:pretty}

/* ===== Mobile : espacements réduits ===== */
@media(max-width:760px){
  section.light{padding-top:3.4rem!important;padding-bottom:3.4rem!important}
  section.dark:not(.hero-sec):not(.breath-sec){padding-top:3.8rem!important;padding-bottom:3.8rem!important}
  .benefit-band,.benefit-band:nth-child(2){flex-direction:column;align-items:flex-start;justify-content:center;text-align:left;gap:1.1rem;min-height:30vh}
  .benefit-band:nth-child(2) .benefit-text{text-align:left}
  .benefit-text{flex:1 1 auto}
  .benefit-num{font-size:clamp(4.6rem,20vw,7rem)}
  /* Doit être redéclaré ici : la règle .benefit-num ci-dessus, plus tardive
     dans la feuille, l'emporterait sinon et rognerait les mots longs. */
  .benefit-num--mot{font-size:clamp(1.6rem,10.5vw,2.8rem)}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  [data-reveal]{opacity:1!important;transform:none!important}
  #step2 .fld{opacity:1!important;transform:none!important}
}