/* ═══ BRAND ═══ */
:root {
    --brand-grad:  linear-gradient(135deg, #9b5de5 0%, #3b82f6 100%);
    --glow-p:      rgba(155,93,229,.12);
    --glow-c:      rgba(56,217,245,.10);
}

/* ═══ DARK ═══ */
:root[data-theme="dark"] {
    --bg:       #07091a;
    --surface:  #0c0f24;
    --border:   #1e2245;
    --text:     #e8edff;
    --muted:    #6672a0;
    --accent:   #38d9f5;
    --accent2:  #b06eff;
    --nav-bg:   rgba(7,9,26,.94);
    --h: 'Outfit', sans-serif;
    --b: 'DM Sans', sans-serif;
    --m: 'DM Mono', monospace;
}

/* ═══ LIGHT ═══ */
:root[data-theme="light"] {
    --bg:       #f0f0f8;
    --surface:  #ffffff;
    --border:   #d0d0e8;
    --text:     #12104a;
    --muted:    #7070a0;
    --accent:   #7c3aed;
    --accent2:  #0ea5e9;
    --nav-bg:   rgba(240,240,248,.96);
    --h: 'Outfit', sans-serif;
    --b: 'DM Sans', sans-serif;
    --m: 'DM Mono', monospace;
}

/* ═══ RESET ═══ */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { background:var(--bg); color:var(--text); font-family:var(--b); line-height:1.6; transition:background .5s,color .4s; }
a { color:inherit; text-decoration:none; }
[id] { scroll-margin-top:104px; }

/* ═══ THEME BAR ═══ */
.tb {
    position:fixed; top:0; left:0; right:0; z-index:1100;
    height:36px; background:var(--surface); border-bottom:1px solid var(--border);
    display:flex; align-items:center; justify-content:center; gap:12px;
    font-family:var(--m); font-size:10px; letter-spacing:.12em; color:var(--muted);
    text-transform:uppercase; transition:background .5s;
}
.tw { display:flex; align-items:center; gap:9px; cursor:pointer; }
.tt { width:40px; height:20px; border-radius:10px; background:var(--border); position:relative; transition:background .3s; }
[data-theme="dark"] .tt { background:var(--accent); }
.tk { position:absolute; top:3px; left:3px; width:14px; height:14px; border-radius:50%; background:var(--bg); transition:transform .3s; }
[data-theme="dark"] .tk { transform:translateX(20px); }
[data-theme="dark"] .l-d, [data-theme="light"] .l-l { color:var(--text); }

/* ═══ NAV ═══ */
nav {
    position:fixed; top:36px; left:0; right:0; z-index:1000;
    height:64px; padding:0 48px;
    background:var(--nav-bg); backdrop-filter:blur(18px) saturate(160%);
    border-bottom:1px solid var(--border);
    display:flex; align-items:center; justify-content:space-between;
    transition:background .5s;
}
.n-logo { display:flex; align-items:center; }
.n-logo img { height:40px; mix-blend-mode:screen; transition:opacity .2s; }
[data-theme="light"] .n-logo img { mix-blend-mode:multiply; filter:brightness(.8) saturate(1.4); }
.n-logo:hover img { opacity:.75; }
.n-menu { display:flex; gap:28px; list-style:none; align-items:center; }
.n-menu a { font-size:12px; font-weight:500; letter-spacing:.07em; text-transform:uppercase; color:var(--muted); transition:color .2s; padding-bottom:2px; border-bottom:1px solid transparent; }
.n-menu a:hover { color:var(--text); border-bottom-color:var(--accent); }
.n-cta { padding:9px 20px; font-size:12px; font-weight:600; letter-spacing:.07em; text-transform:uppercase; background:var(--brand-grad); color:#fff !important; border-bottom:none !important; transition:opacity .2s,transform .2s; }
.n-cta:hover { opacity:.85; transform:translateY(-1px); }

/* ═══ HAMBURGER (mobile) ═══ */
.n-burger { display:none; flex-direction:column; gap:5px; cursor:pointer; padding:4px; }
.n-burger span { display:block; width:22px; height:2px; background:var(--text); border-radius:2px; transition:all .3s; }
.n-burger.open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.n-burger.open span:nth-child(2) { opacity:0; }
.n-burger.open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }
.n-drawer {
    display:none; position:fixed; top:100px; left:0; right:0; z-index:999;
    background:var(--nav-bg); backdrop-filter:blur(18px);
    border-bottom:1px solid var(--border);
    flex-direction:column; padding:20px 24px 24px;
    gap:0;
}
.n-drawer.open { display:flex; }
.n-drawer a { display:block; padding:14px 0; font-size:14px; font-weight:500; letter-spacing:.07em; text-transform:uppercase; color:var(--muted); border-bottom:1px solid var(--border); transition:color .2s; }
.n-drawer a:last-child { border-bottom:none; margin-top:16px; text-align:center; background:var(--brand-grad); color:#fff !important; padding:12px; }
.n-drawer a:hover { color:var(--text); }

/* ═══ HERO ═══ */
#accueil {
    min-height:100vh;
    background:url('../img/banner.png') center/cover no-repeat;
    position:relative; overflow:hidden;
    display:flex; flex-direction:column; justify-content:center;
    padding:140px 48px 90px;
}
#accueil::before {
    content:''; position:absolute; inset:0;
    background:linear-gradient(105deg,rgba(7,9,26,.94) 0%,rgba(7,9,26,.80) 55%,rgba(7,9,26,.50) 100%);
}
[data-theme="light"] #accueil::before {
    background:linear-gradient(105deg,rgba(240,240,248,.97) 0%,rgba(240,240,248,.88) 55%,rgba(240,240,248,.68) 100%);
}
#accueil::after { content:''; position:absolute; bottom:-80px; right:8%; width:480px; height:480px; background:radial-gradient(circle,var(--glow-p) 0%,transparent 65%); pointer-events:none; }
.hi { position:relative; z-index:1; max-width:1100px; }
.h-eye { font-family:var(--m); font-size:11px; letter-spacing:.18em; text-transform:uppercase; color:var(--accent); margin-bottom:26px; display:flex; align-items:center; gap:12px; }
.h-eye::before { content:''; display:inline-block; width:28px; height:1px; background:var(--accent); }
h1 { font-family:var(--h); font-size:clamp(46px,7vw,100px); font-weight:800; line-height:1.0; letter-spacing:-3px; margin-bottom:28px; max-width:800px; }
/* h1 .hl — gradient défini dans h2 .g, h1 .hl ci-dessus */
.h-sub { font-size:18px; color:var(--muted); max-width:520px; line-height:1.75; margin-bottom:44px; }
.h-ctas { display:flex; gap:14px; flex-wrap:wrap; margin-bottom:72px; }
.btn { padding:13px 30px; font-family:var(--b); font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase; transition:opacity .2s,transform .2s; display:inline-block; cursor:pointer; border:none; }
.btn:hover { opacity:.82; transform:translateY(-2px); }
.bp { background:var(--brand-grad); color:#fff; }
.bs { background:transparent; border:1px solid var(--border); color:var(--muted); }
.bs:hover { border-color:var(--accent); color:var(--text); }
.h-stats { display:flex; gap:48px; padding-top:40px; border-top:1px solid var(--border); flex-wrap:wrap; }
.sn { font-family:var(--h); font-size:38px; font-weight:800; line-height:1; background:var(--brand-grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; }
.sl { font-size:12px; color:var(--muted); margin-top:5px; line-height:1.3; }

/* ═══ SECTION BASE ═══ */
.sw { max-width:1100px; margin:0 auto; padding:104px 48px; }
.sep { border:none; border-top:1px solid var(--border); margin:0 48px; }
.s-tag { font-family:var(--m); font-size:11px; letter-spacing:.15em; text-transform:uppercase; color:var(--accent); margin-bottom:20px; }
h2 { font-family:var(--h); font-size:clamp(30px,3.8vw,52px); font-weight:700; letter-spacing:-1.5px; line-height:1.08; margin-bottom:20px; }
h2 .g, h1 .hl {
    background:var(--brand-grad);
    -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
    /* Sur un span inline, le navigateur ignore padding-bottom pour le masque clip.
       display:inline-block force la bounding box à inclure le padding,
       margin-bottom négatif compense le décalage de layout. */
    display:inline-block;
    padding-bottom:.2em;
    margin-bottom:-.2em;
    line-height:1.2;
}
.s-intro { font-size:17px; color:var(--muted); max-width:540px; line-height:1.75; margin-bottom:60px; }

/* ═══ CARDS 4 ═══ */
.c4 { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:20px; }
.card { background:var(--surface); border:1px solid var(--border); padding:34px 28px; position:relative; overflow:hidden; transition:border-color .3s,transform .35s,box-shadow .35s; }
.card::before { content:''; position:absolute; inset:0; opacity:0; background:linear-gradient(135deg,var(--glow-p),var(--glow-c)); transition:opacity .4s; }
.card:hover { border-color:var(--accent2); transform:translateY(-5px); box-shadow:0 24px 60px rgba(0,0,0,.4); }
.card:hover::before { opacity:1; }
.c-ico { font-size:28px; margin-bottom:18px; position:relative; }
.card h3 { font-family:var(--h); font-size:17px; font-weight:700; letter-spacing:-.3px; margin-bottom:10px; position:relative; }
.card p { font-size:14px; color:var(--muted); line-height:1.65; position:relative; }
.card-accent { border-color:var(--accent2); background:linear-gradient(135deg,rgba(155,93,229,.06),rgba(56,217,245,.04)); }

/* ═══ SPLIT ═══ */
.split { display:grid; grid-template-columns:1fr 1fr; gap:64px; align-items:center; }
.o-list { list-style:none; display:flex; flex-direction:column; gap:16px; }
.o-list li { display:flex; align-items:flex-start; gap:14px; font-size:15px; line-height:1.55; }
.o-list li::before { content:'→'; background:var(--brand-grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; flex-shrink:0; margin-top:1px; font-family:var(--m); }
.o-box { background:var(--surface); border:1px solid var(--border); padding:44px; position:relative; overflow:hidden; }
.o-box::before { content:''; position:absolute; top:-80px; right:-80px; width:280px; height:280px; background:radial-gradient(circle,var(--glow-p) 0%,transparent 70%); }
.o-box::after  { content:''; position:absolute; bottom:-60px; left:-60px; width:200px; height:200px; background:radial-gradient(circle,var(--glow-c) 0%,transparent 70%); }
.o-badge { font-family:var(--m); font-size:10px; letter-spacing:.12em; text-transform:uppercase; padding:4px 12px; border:1px solid var(--accent2); color:var(--accent2); display:inline-block; margin-bottom:26px; position:relative; }
.o-box h3 { font-family:var(--h); font-size:24px; font-weight:700; line-height:1.25; margin-bottom:18px; letter-spacing:-.5px; position:relative; }
.o-box p { font-size:14px; color:var(--muted); line-height:1.7; position:relative; }

/* ═══ ARCHI EXAMPLES ═══ */
.archi-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.archi-card { background:var(--surface); border:1px solid var(--border); padding:36px; position:relative; overflow:hidden; transition:border-color .3s,transform .3s; }
.archi-card:hover { border-color:var(--accent2); transform:translateY(-4px); }
.archi-card::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; background:radial-gradient(circle,var(--glow-p) 0%,transparent 70%); pointer-events:none; }
.archi-num { font-family:var(--h); font-size:48px; font-weight:800; line-height:1; background:var(--brand-grad); -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text; margin-bottom:8px; opacity:.35; }
.archi-card h3 { font-family:var(--h); font-size:19px; font-weight:700; letter-spacing:-.3px; margin-bottom:12px; position:relative; }
.archi-card p { font-size:14px; color:var(--muted); line-height:1.65; position:relative; }
.archi-tag { font-family:var(--m); font-size:10px; letter-spacing:.1em; text-transform:uppercase; color:var(--accent2); margin-bottom:16px; display:block; position:relative; }

/* ═══ RÉFÉRENCES / LOGOS ═══ */
.logos-zone {
    margin-top:48px;
    background:var(--surface); border:1px solid var(--border);
    min-height:220px;
    display:flex; flex-direction:column; align-items:center; justify-content:center;
    gap:16px; padding:48px;
    position:relative; overflow:hidden;
}
.logos-zone::before { content:''; position:absolute; inset:0; background:linear-gradient(135deg,var(--glow-p),var(--glow-c)); opacity:.4; }
.logos-placeholder { position:relative; text-align:center; }
.logos-placeholder .ico { font-size:36px; opacity:.2; margin-bottom:12px; }
.logos-placeholder p { font-family:var(--m); font-size:11px; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); }
.logos-zone img { position:relative; max-width:100%; max-height:600px; object-fit:contain; }

/* ═══ À PROPOS ═══ */
.ap-grid { display:grid; grid-template-columns:300px 1fr; gap:72px; align-items:start; }
.ap-photo { aspect-ratio:3/4; overflow:hidden; border:1px solid var(--border); position:relative; }
.ap-photo img { width:100%; height:100%; object-fit:cover; object-position:top center; display:block; }
.ap-photo::after { content:''; position:absolute; bottom:0; left:0; right:0; height:40%; background:linear-gradient(to top,rgba(7,9,26,.6) 0%,transparent 100%); }
[data-theme="light"] .ap-photo::after { background:linear-gradient(to top,rgba(240,240,248,.4) 0%,transparent 100%); }
.tl { display:flex; flex-direction:column; margin-top:36px; }
.tl-i { display:flex; gap:20px; padding-bottom:28px; position:relative; }
.tl-i:not(:last-child)::before { content:''; position:absolute; left:50px; top:26px; bottom:0; width:1px; background:var(--border); }
.tl-y { font-family:var(--m); font-size:10px; color:var(--accent); min-width:36px; padding-top:3px; letter-spacing:.05em; }
.tl-d { width:10px; height:10px; border-radius:50%; flex-shrink:0; margin-top:3px; background:var(--brand-grad); box-shadow:0 0 8px var(--glow-c); }
.tl-c h4 { font-size:14px; font-weight:600; margin-bottom:3px; }
.tl-c p { font-size:13px; color:var(--muted); line-height:1.5; }

/* ═══ CONTACT ═══ */
#contact { background:var(--surface); border-top:1px solid var(--border); }
.c-grid { display:grid; grid-template-columns:1fr 1fr; gap:72px; }
.c-il { display:flex; align-items:center; gap:14px; padding:13px 0; border-bottom:1px solid var(--border); }
.c-il:first-child { border-top:1px solid var(--border); }
.c-k { font-family:var(--m); font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); min-width:86px; }
.c-v { font-size:14px; transition:color .2s; }
.c-v a:hover { color:var(--accent); }
.f-stack { display:flex; flex-direction:column; gap:16px; }
.fg { display:flex; flex-direction:column; gap:6px; }
label { font-family:var(--m); font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); }
input, textarea, select { background:var(--bg); border:1px solid var(--border); color:var(--text); padding:11px 15px; font-family:var(--b); font-size:14px; outline:none; width:100%; transition:border-color .2s; appearance:none; }
input:focus, textarea:focus, select:focus { border-color:var(--accent); }
textarea { resize:vertical; min-height:110px; }
select option { background:var(--surface); }
.f-sub button { width:100%; padding:14px; border:none; cursor:pointer; background:var(--brand-grad); color:#fff; font-family:var(--b); font-weight:600; font-size:13px; letter-spacing:.07em; text-transform:uppercase; transition:opacity .2s; }
.f-sub button:hover { opacity:.85; }
#fm { font-size:13px; text-align:center; min-height:18px; margin-top:6px; color:var(--muted); }

/* ═══ FOOTER ═══ */
footer { background:var(--bg); border-top:1px solid var(--border); padding:36px 48px; }
.f-top { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px; margin-bottom:24px; padding-bottom:24px; border-bottom:1px solid var(--border); }
.f-logo img { height:32px; mix-blend-mode:screen; }
[data-theme="light"] .f-logo img { mix-blend-mode:multiply; filter:brightness(.8) saturate(1.3); }
.f-links { display:flex; gap:20px; flex-wrap:wrap; }
.f-links a { font-size:13px; color:var(--muted); transition:color .2s; }
.f-links a:hover { color:var(--text); }
.f-bot { /*display:flex;*/ justify-content:space-between; flex-wrap:wrap; gap:12px; }
.f-legal { /*display:flex;*/ font-family:var(--m); font-size:10px; color:var(--muted); line-height:1.8; text-align: center }
.f-legal a { border-bottom:1px solid var(--border); padding-bottom:1px; transition:color .2s; }
.f-legal a:hover { color:var(--text); }

/* ═══ ANIMATIONS ═══ */
@keyframes fadeUp { from{opacity:0;transform:translateY(28px)} to{opacity:1;transform:none} }
.reveal { opacity:0; transform:translateY(26px); transition:opacity .7s ease,transform .7s ease; }
.reveal.in { opacity:1; transform:none; }
.h-eye  { animation:fadeUp .6s ease .10s both; }
h1      { animation:fadeUp .7s ease .22s both; }
.h-sub  { animation:fadeUp .7s ease .36s both; }
.h-ctas { animation:fadeUp .7s ease .48s both; }
.h-stats{ animation:fadeUp .7s ease .62s both; }

/* ═══ RESPONSIVE ═══ */
@media(max-width:900px){
    nav { padding:0 20px; }
    .n-menu { display:none; }
    .n-burger { display:flex; }
    .sw { padding:72px 20px; }
    .sep { margin:0 20px; }
    #accueil { padding:120px 20px 72px; }
    .split,.ap-grid,.c-grid,.archi-grid { grid-template-columns:1fr; gap:36px; }
    .h-stats { gap:24px; }
    footer { padding:28px 20px; }
    .f-top,.f-bot { flex-direction:column; align-items:flex-start; }
}