/* KA Consulting 2027 — Lya & Co. Page unique style Apple + pages intérieures. Aucune dépendance. */
:root{
  --bg:#ffffff;--bg-2:#f5f5f7;--fg:#1d1d1f;--fg-2:#6e6e73;--line:#d2d2d7;
  --ink:#000000;--ink-fg:#f5f5f7;--ink-fg-2:#a1a1a6;--accent:#0066cc;--accent-fg:#fff;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,"Helvetica Neue",Helvetica,Arial,sans-serif;
  --max:1120px;--ease:cubic-bezier(.22,1,.36,1);
}
@media (prefers-color-scheme:dark){:root{--bg:#000;--bg-2:#161617;--fg:#f5f5f7;--fg-2:#a1a1a6;--line:#3a3a3c;--ink:#161617;--accent:#2997ff;color-scheme:dark}}
*{box-sizing:border-box}
html{scroll-padding-top:60px}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:17px;line-height:1.47;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{margin:0;letter-spacing:-.02em;text-wrap:balance;font-weight:700}
h2{font-size:clamp(36px,6vw,64px);line-height:1.06}
h3{font-size:clamp(22px,2.6vw,28px);line-height:1.2}
p{margin:0}
.lead{font-size:clamp(19px,2.2vw,24px);line-height:1.35;color:var(--fg-2);max-width:34em}
.btn{display:inline-flex;align-items:center;gap:.4em;background:var(--accent);color:var(--accent-fg);padding:.75em 1.4em;border-radius:980px;font-weight:600;font-size:17px;border:0;cursor:pointer;transition:transform .35s var(--ease),filter .35s}
.btn:hover{filter:brightness(1.08);text-decoration:none;transform:translateY(-1px)}
.link{font-weight:500;font-size:19px}
.link::after{content:" \203A"}

/* barre */
.nav{position:sticky;top:0;z-index:9;background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid transparent;transition:border-color .3s}
.nav.scrolled{border-bottom-color:color-mix(in srgb,var(--line) 60%,transparent)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:52px;font-size:14px}
.brand{font-weight:600;letter-spacing:.01em;color:var(--fg)}
.brand:hover{text-decoration:none}
.nav ul{display:flex;gap:28px;list-style:none;margin:0;padding:0}
.nav ul a{color:var(--fg);opacity:.85}
.burger{display:none;background:none;border:0;width:40px;height:40px;padding:8px;cursor:pointer}
.burger span{display:block;height:2px;background:var(--fg);margin:6px 0;transition:transform .3s,opacity .3s}
@media (max-width:720px){
  .burger{display:block}
  .nav ul{display:none;position:absolute;left:0;right:0;top:52px;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 16px 16px}
  .nav ul a{display:block;padding:12px 0;font-size:19px}
  body.menu-open .nav ul{display:flex}
  body.menu-open .burger span:first-child{transform:translateY(4px) rotate(45deg)}
  body.menu-open .burger span:last-child{transform:translateY(-4px) rotate(-45deg)}
}

/* héros */
.hero{padding-block:clamp(64px,10vw,120px) 0;text-align:center}
.hero h1{font-size:clamp(44px,8.5vw,112px);line-height:.98;letter-spacing:-.035em}
.hero h1 .w{display:inline-block;opacity:0;transform:translateY(.4em);animation:rise .9s var(--ease) forwards}
.hero h1 .w:nth-child(2){animation-delay:.08s}.hero h1 .w:nth-child(3){animation-delay:.16s}.hero h1 .w:nth-child(4){animation-delay:.24s}.hero h1 .w:nth-child(5){animation-delay:.32s}
.hero .lead{margin:28px auto 0;opacity:0;animation:rise .9s var(--ease) .5s forwards}
.hero .cta{margin-top:34px;display:flex;gap:28px;justify-content:center;align-items:center;flex-wrap:wrap;opacity:0;animation:rise .9s var(--ease) .65s forwards}
@keyframes rise{to{opacity:1;transform:none}}
.hero-img{margin:clamp(40px,6vw,72px) auto 0;max-width:var(--max);padding-inline:max(16px,env(safe-area-inset-left,0px));}
.hero-img img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:28px}
.since{margin-top:clamp(36px,6vw,64px);padding-bottom:clamp(40px,6vw,72px);display:flex;justify-content:center;gap:clamp(24px,6vw,72px);flex-wrap:wrap;color:var(--fg-2);font-size:15px;text-align:center}
.since b{display:block;color:var(--fg);font-size:clamp(28px,4vw,44px);font-weight:600;letter-spacing:-.02em;font-variant-numeric:tabular-nums}

/* sections */
.section{padding-block:clamp(72px,10vw,128px)}
.section .head{max-width:46em;margin-bottom:clamp(36px,5vw,64px)}
.section .head p{margin-top:18px}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.dark{background:var(--ink);color:var(--ink-fg)}
.dark .lead{color:var(--ink-fg-2)}

/* services : liste éditoriale avec vignette */
.services{border-top:1px solid var(--line);display:grid}
.svc{display:grid;grid-template-columns:minmax(0,360px) minmax(0,1fr);gap:24px clamp(24px,5vw,64px);padding-block:32px;border-bottom:1px solid var(--line);align-items:center;color:inherit}
.svc:hover{text-decoration:none}
.svc-img{display:block;overflow:hidden;border-radius:18px}
.svc-img img{aspect-ratio:8/5;object-fit:cover;width:100%;transition:transform 1.2s var(--ease)}
.svc:hover .svc-img img{transform:scale(1.04)}
.svc-txt p{color:var(--fg-2);max-width:40em;margin-top:8px}
.svc-txt .more{display:inline-block;margin-top:14px;color:var(--accent);font-weight:500}
.svc-txt .more::after{content:" \203A"}
.svc:hover h3{color:var(--accent)}
@media (max-width:720px){.svc{grid-template-columns:1fr;gap:14px}}

/* réalisations : mosaïque de photos avec texte sur fond */
.projects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.proj{position:relative;display:block;border-radius:28px;overflow:hidden;min-height:420px;color:#fff;isolation:isolate}
.proj:hover{text-decoration:none}
.proj-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;transition:transform 1.4s var(--ease)}
.proj:hover .proj-img{transform:scale(1.05)}
.proj::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(0,0,0,.05) 0%,rgba(0,0,0,.25) 45%,rgba(0,0,0,.82) 100%)}
.proj-txt{position:absolute;inset:auto 0 0 0;padding:clamp(22px,3vw,40px);display:flex;flex-direction:column;gap:10px}
.proj .sector{font-size:13px;opacity:.85}
.proj h3{font-size:clamp(24px,3vw,34px);max-width:16em;color:#fff}
.proj .big{font-size:clamp(36px,4.5vw,56px);font-weight:700;letter-spacing:-.03em;line-height:1}
.proj .result{font-size:clamp(15px,1.6vw,17px);opacity:.92;max-width:34em}
.proj.wide{grid-column:span 2;min-height:360px}
@media (max-width:720px){.projects{grid-template-columns:1fr}.proj.wide{grid-column:auto}.proj{min-height:360px}}

/* approche */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(24px,4vw,56px);counter-reset:s}
.step{position:relative;padding-top:22px;border-top:2px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-1.1em;left:0;background:var(--bg);padding-right:14px;font-size:clamp(26px,3vw,36px);font-weight:700;letter-spacing:-.02em;color:var(--accent)}
.step h3{margin-top:14px}
.step p{margin-top:10px;color:var(--fg-2)}
.step.in{border-top-color:var(--accent);transition:border-color 1.2s var(--ease)}
@media (max-width:720px){.steps{grid-template-columns:1fr}}

/* contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(28px,5vw,64px);align-items:center}
.contact .item{font-size:clamp(22px,2.8vw,32px);font-weight:600;letter-spacing:-.02em;line-height:1.25;margin-bottom:26px}
.contact .item small{display:block;font-size:15px;font-weight:400;color:var(--fg-2);margin-bottom:6px;letter-spacing:0}
.contact .cta{margin-top:10px}
.contact-img{margin:0}
.contact-img img{border-radius:28px;aspect-ratio:16/10;object-fit:cover;width:100%}
@media (max-width:720px){.contact-grid{grid-template-columns:1fr}}

/* pied */
footer{border-top:1px solid var(--line);padding-block:28px;font-size:13px;color:var(--fg-2)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

/* pages intérieures (articles, catégories, contact) */
.page{padding-block:clamp(48px,7vw,96px) clamp(72px,10vw,128px)}
.page .page-header h1,.page .article-hero h1{font-size:clamp(36px,6vw,64px);line-height:1.06}
.article-hero{max-width:46em}
.article-hero .sector{color:var(--fg-2);font-size:15px;margin-bottom:12px}
.article-hero p.lead{margin-top:18px}
.article-img{margin:clamp(28px,4vw,48px) 0}
.article-img img{border-radius:24px;aspect-ratio:16/9;object-fit:cover;width:100%}
.article-body{max-width:40em;font-size:19px;line-height:1.6}
.article-body p{margin:0 0 1.2em}
.article-body h2,.article-body h3{margin:1.6em 0 .5em;font-size:clamp(22px,2.6vw,28px)}
.article-body ul{padding-left:1.2em}
.article-body img{border-radius:16px}
.article-nav{margin-top:clamp(40px,6vw,64px);display:flex;gap:24px;flex-wrap:wrap}
.cat-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:clamp(28px,4vw,48px)}
@media (max-width:720px){.cat-list{grid-template-columns:1fr}}
/* formulaire de contact Joomla */
.contact .contact-form,.com-contact{max-width:40em}
.com-contact h1{font-size:clamp(36px,6vw,64px);line-height:1.06}
.com-contact .contact-address,.com-contact dl{margin:24px 0;color:var(--fg-2)}
.com-contact .form-group,.ka-form label{display:block;margin-top:18px}
.com-contact label{display:block;font-weight:500;margin-bottom:6px}
.com-contact input[type=text],.com-contact input[type=email],.com-contact textarea,.ka-form input{width:100%;font:inherit;padding:.75em .9em;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--fg)}
.com-contact textarea{min-height:160px}
.com-contact .btn-primary,.com-contact button[type=submit]{margin-top:20px}
.com-contact .btn-primary,.com-contact button[type=submit]{display:inline-flex;background:var(--accent);color:#fff;border:0;border-radius:980px;padding:.75em 1.4em;font:inherit;font-weight:600;cursor:pointer}
.com-contact .form-check{margin-top:14px;font-size:15px;color:var(--fg-2)}
.com-contact .required{color:var(--accent)}
.alert{padding:14px 18px;border-radius:14px;background:var(--bg-2);margin:16px auto;max-width:var(--max)}
.alert-success{background:#e3f6e8;color:#0b5a2a}
.alert-danger,.alert-error{background:#fde8ea;color:#8a1020}
@media (prefers-color-scheme:dark){.alert-success{background:#0b3d1f;color:#9be3b5}.alert-danger,.alert-error{background:#4a0f1a;color:#ffb3bd}}
@media (prefers-reduced-motion:reduce){.hero h1 .w,.hero .lead,.hero .cta,.reveal{animation:none;opacity:1;transform:none;transition:none}.svc-img img,.proj-img{transition:none}}