/* NexoraDigital — feuille de style commune aux 5 pages
   Charte : fiche de style « Identité visuelle 01 »
   Mise en page : en-tête fixe, sections pleine largeur, contenu centré sur 1120px */
:root{
  --bleu-electrique:#087BFF;
  --bleu-profond:#263FEA;
  --violet:#6D22F5;
  --bleu-nuit:#10182B;
  --gris-clair:#F4F6FA;

  --bg:#FFFFFF;
  --surface:var(--gris-clair);
  --surface-2:#E9EDF6;
  --fg:var(--bleu-nuit);
  --muted:#4A5370;
  --line:#DCE1EE;
  --accent:var(--bleu-profond);
  --accent-2:var(--violet);
  --on-accent:#FFFFFF;
  --notice-bg:#FFF6E0;
  --notice-fg:#6B4A00;
  --ok-bg:#E6F4EA;
  --ok-fg:#1D5E33;
  --header-bg:rgba(255,255,255,.92);
  --gradient:linear-gradient(120deg,var(--bleu-electrique) 0%,var(--bleu-profond) 50%,var(--violet) 100%);

  --f-titre:"Poppins",Arial,Helvetica,sans-serif;
  --f-texte:"Inter",Arial,Helvetica,sans-serif;
  --w:1120px;
  --r:14px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B1120;--surface:#10182B;--surface-2:#18223A;--fg:#F4F6FA;--muted:#A9B3CC;--line:#243050;
  --accent:#5C8BFF;--accent-2:#9B6BFF;--notice-bg:#3A2E10;--notice-fg:#FFE2A0;--ok-bg:#12331F;--ok-fg:#A8E6BC;
  --header-bg:rgba(11,17,32,.92);color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0B1120;--surface:#10182B;--surface-2:#18223A;--fg:#F4F6FA;--muted:#A9B3CC;--line:#243050;
  --accent:#5C8BFF;--accent-2:#9B6BFF;--notice-bg:#3A2E10;--notice-fg:#FFE2A0;--ok-bg:#12331F;--ok-fg:#A8E6BC;
  --header-bg:rgba(11,17,32,.92);color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-texte);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--f-titre);line-height:1.15;margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,5.2vw,3.6rem);font-weight:700}
h2{font-size:clamp(1.6rem,3.4vw,2.3rem);font-weight:600}
h3{font-size:1.2rem;font-weight:600}
p{margin:0;max-width:65ch}
:focus-visible{outline:3px solid var(--bleu-electrique);outline-offset:3px;border-radius:4px}
.skip{position:absolute;left:-999px;top:8px;background:var(--fg);color:var(--bg);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:16px}

/* Conteneur avec gouttière latérale */
.wrap{max-width:var(--w);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}

/* En-tête */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--header-bg)}
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--header-bg);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg)}
.brand img{width:38px;height:auto}
.brand span{font-family:var(--f-titre);font-weight:600;font-size:1.35rem;letter-spacing:-.02em}
.brand b{font-weight:600;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;gap:4px;align-items:center}
.nav a{font-family:var(--f-titre);font-weight:500;font-size:.95rem;color:var(--fg);text-decoration:none;padding:8px 14px;border-radius:999px}
.nav a:hover{background:var(--surface)}
.nav a[aria-current="page"]{color:var(--accent);background:var(--surface)}
.nav a.nav-cta{background:var(--gradient);color:var(--on-accent)}
.nav a.nav-cta[aria-current="page"]{color:var(--on-accent)}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:var(--fg);border-radius:10px;padding:8px 12px;font:600 .9rem var(--f-titre);cursor:pointer}
@media (max-width:860px){
  .menu-btn{display:inline-flex}
  .nav{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;background:var(--bg);border-bottom:1px solid var(--line);padding:12px max(20px,env(safe-area-inset-right,0px)) 18px max(20px,env(safe-area-inset-left,0px));display:none}
  .nav.open{display:flex}
  .nav a{padding:12px 14px}
}

/* Boutons */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-titre);font-weight:600;font-size:1rem;padding:14px 24px;border-radius:999px;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .15s ease}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--gradient);color:var(--on-accent)}
.btn-ghost{border-color:var(--line);color:var(--fg);background:transparent}
.btn-ghost:hover{border-color:var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:12px}

/* Sections */
section{padding-block:clamp(56px,8vw,96px)}
.alt{background:var(--surface)}
.eyebrow{font-family:var(--f-titre);font-size:.8rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;display:block}
.lead{font-size:1.15rem;color:var(--muted)}
.sec-head{display:grid;gap:14px;margin-bottom:40px}

/* Bandeau titre des pages intérieures */
.page-hero{padding-block:clamp(48px,7vw,88px) clamp(36px,5vw,56px);position:relative;overflow:hidden}
.page-hero::after{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:var(--gradient);opacity:.14;filter:blur(10px);pointer-events:none}
.page-hero .wrap{position:relative;display:grid;gap:18px}

/* Accueil */
.hero{padding-block:clamp(56px,8vw,104px) clamp(48px,6vw,80px)}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1 em{font-style:normal;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy{display:grid;gap:24px;min-width:0}
.ribbon{aspect-ratio:1/1;max-width:100%;border-radius:28px;background:var(--surface);display:grid;place-items:center;position:relative;overflow:hidden}
.ribbon::before{content:"";position:absolute;inset:18%;border-radius:50%;background:var(--gradient);opacity:.18;filter:blur(30px)}
.ribbon img{width:58%;position:relative}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;gap:32px}.ribbon{width:min(240px,70%);justify-self:center}}

/* Grilles de cartes */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:900px){.g3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.g3,.g2{grid-template-columns:1fr}}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:grid;gap:12px;align-content:start;min-width:0}
.alt .card{background:var(--bg)}
.card p{color:var(--muted);font-size:.98rem}
.card ul{margin:4px 0 0;padding-left:18px;color:var(--muted);font-size:.95rem}
.icon{width:44px;height:44px;border-radius:12px;background:var(--gradient);display:grid;place-items:center;color:#fff}
.icon svg{width:22px;height:22px}
.card-link{font-family:var(--f-titre);font-weight:600;font-size:.95rem;text-decoration:none}

/* Emplacements à fournir par l'équipe */
.slot{border:2px dashed var(--line);border-radius:var(--r);background:var(--surface-2);color:var(--muted);display:grid;place-items:center;text-align:center;padding:24px;font-size:.92rem;min-height:180px}
.slot strong{display:block;color:var(--fg);font-family:var(--f-titre);margin-bottom:4px}
.slot.video{aspect-ratio:16/9;max-width:100%}
.provisoire{display:inline-block;justify-self:start;width:fit-content;font-size:.75rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;background:var(--notice-bg);color:var(--notice-fg);padding:3px 10px;border-radius:999px}

/* Méthode : étapes réelles, donc numérotées */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:0;counter-reset:step}
.steps li{display:grid;grid-template-columns:72px 1fr;gap:24px;padding-block:28px;border-top:1px solid var(--line);counter-increment:step}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps li::before{content:counter(step,decimal-leading-zero);font-family:var(--f-titre);font-weight:700;font-size:2rem;line-height:1;background:var(--gradient);-webkit-background-clip:text;background-clip:text;color:transparent}
.steps li > div{display:grid;gap:8px;min-width:0}
.steps .livrable{font-size:.9rem;color:var(--muted)}
.steps .livrable b{color:var(--fg)}
@media (max-width:620px){.steps li{grid-template-columns:1fr;gap:10px}}

/* Équipe */
.member{display:grid;gap:12px;align-content:start}
.member .slot{min-height:0;aspect-ratio:4/5;padding:16px}
.member h3{font-size:1.05rem}
.member p{font-size:.9rem;color:var(--muted)}

/* Bandeau d'appel à l'action */
.cta-band{background:var(--bleu-nuit);color:#F4F6FA;border-radius:24px;padding:clamp(32px,5vw,56px);display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;background:var(--gradient);opacity:.45;filter:blur(40px)}
.cta-band > *{position:relative;z-index:1}
.cta-band p{color:#C9D1E6}
.cta-band h2{color:#FFFFFF}
@media (max-width:720px){.cta-band{grid-template-columns:1fr}}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:32px;align-items:start}
@media (max-width:860px){.contact-grid{grid-template-columns:1fr}}
.notice{background:var(--notice-bg);color:var(--notice-fg);border-radius:12px;padding:14px 18px;font-size:.95rem;font-weight:500}
.form{display:grid;gap:18px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:clamp(20px,4vw,32px)}
.field{display:grid;gap:6px}
.field label{font-family:var(--f-titre);font-weight:500;font-size:.92rem}
.field input,.field select,.field textarea{font:inherit;font-size:1rem;color:var(--fg);background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 14px;width:100%}
.field textarea{min-height:140px;resize:vertical}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
@media (max-width:620px){.row2{grid-template-columns:1fr}}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;color:var(--muted)}
.check input{margin-top:5px}
.form-result{background:var(--ok-bg);color:var(--ok-fg);border-radius:12px;padding:14px 18px;font-weight:500}
.info{display:grid;gap:18px}
.info dl{margin:0;display:grid;gap:14px}
.info dt{font-family:var(--f-titre);font-weight:600;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.info dd{margin:2px 0 0}

/* Pied de page */
.site-footer{background:var(--bleu-nuit);color:#C9D1E6;padding-block:48px 32px;font-size:.92rem}
.site-footer .wrap{display:grid;gap:28px}
.foot-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px;align-items:flex-start}
.site-footer .brand span{color:#FFFFFF}
.foot-nav{display:flex;flex-wrap:wrap;gap:6px 20px}
.foot-nav a{color:#E4E9F5;text-decoration:none}
.foot-nav a:hover{text-decoration:underline}
.foot-bottom{border-top:1px solid #243050;padding-top:20px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;color:#8D97B3;font-size:.85rem}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}.btn:hover{transform:none}}