/* ============================================================
   KANSALA CONSULTING — Feuille de style du site
   Le Réseau Souverain du Savoir
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..600;1,9..144,300..500&family=Inter:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --indigo:#0F2A43; --indigo-2:#0b2236; --kaabu:#1C4E7C; --or:#C7A14A; --or-2:#b8922f;
  --argile:#B0623A; --teal:#2E6E6A; --parch:#F5F1E9; --parch-2:#FAF8F3;
  --encre:#15191F; --gris:#6E7681; --brume:#D9DCE1; --blanc:#FFFFFF;
  --line:#e4e0d6; --line-d:#26425e;
  --wrap:1200px;
  --r:8px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Inter',system-ui,sans-serif;color:var(--encre);background:var(--blanc);line-height:1.7;-webkit-font-smoothing:antialiased;}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
::selection{background:var(--or);color:var(--indigo);}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px;}
.serif{font-family:'Fraunces',Georgia,serif;font-weight:400;}
.mono{font-family:'IBM Plex Mono',ui-monospace,monospace;}

.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--or);display:inline-block;}
.eyebrow.dim{color:var(--gris);}

h1,h2,h3{font-family:'Fraunces',Georgia,serif;font-weight:400;line-height:1.08;color:var(--indigo);letter-spacing:.005em;}
.lead{font-size:clamp(17px,2vw,20px);line-height:1.65;color:#33414e;}
p{font-size:16.5px;}

/* ---------- Sections ---------- */
.section{padding:clamp(64px,9vw,120px) 0;}
.section.tight{padding:clamp(48px,6vw,80px) 0;}
.section.dark{background:var(--indigo);color:var(--parch);}
.section.dark h2,.section.dark h3{color:var(--parch);}
.section.dark .lead{color:var(--brume);}
.section.parch{background-color:var(--parch);background-image:url(../img/tessellation.svg);background-size:72px 72px;}

/* ---------- Motifs patrimoniaux (rosace khatam + frise) ---------- */
.hero::after,.page-hero::after{content:"";position:absolute;z-index:1;pointer-events:none;
  background:url(../img/rosace.svg) center/contain no-repeat;opacity:.11;}
.hero::after{width:480px;height:480px;top:-110px;right:-90px;}
.page-hero::after{width:340px;height:340px;top:-70px;right:-60px;}
.cta-band::after{content:"";position:absolute;z-index:0;right:-60px;bottom:-70px;width:260px;height:260px;
  background:url(../img/rosace.svg) center/contain no-repeat;opacity:.13;pointer-events:none;}
.sec-head{max-width:760px;margin-bottom:clamp(36px,5vw,56px);}
.sec-head h2{font-size:clamp(28px,4.2vw,44px);margin:12px 0 0;}
.sec-head p{margin-top:18px;}
.center{text-align:center;margin-left:auto;margin-right:auto;}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:'Inter';font-weight:600;font-size:14.5px;
  padding:14px 26px;border-radius:40px;border:1.5px solid transparent;cursor:pointer;transition:.25s;}
.btn .arw{transition:transform .25s;}
.btn:hover .arw{transform:translateX(4px);}
.btn-or{background:var(--or);color:var(--indigo);}
.btn-or:hover{background:var(--or-2);}
.btn-ghost{border-color:rgba(245,241,233,.4);color:var(--parch);}
.btn-ghost:hover{border-color:var(--or);color:var(--or);}
.btn-dark{background:var(--indigo);color:var(--parch);}
.btn-dark:hover{background:var(--indigo-2);}
.btn-line{border-color:var(--indigo);color:var(--indigo);}
.btn-line:hover{background:var(--indigo);color:var(--parch);}

/* ---------- Header / nav ---------- */
.site-head{position:sticky;top:0;z-index:60;background:rgba(15,42,67,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-d);}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px;}
.brand{display:flex;align-items:center;gap:11px;color:var(--parch);}
.brand .wm{font-family:'Fraunces';font-size:19px;letter-spacing:.02em;}
.brand .cm{font-family:'IBM Plex Mono';font-size:8.5px;letter-spacing:.32em;color:var(--brume);align-self:flex-end;padding-bottom:4px;}
.menu{display:flex;align-items:center;gap:30px;list-style:none;}
.menu a{font-size:14px;color:var(--brume);letter-spacing:.01em;transition:.2s;position:relative;padding:4px 0;}
.menu a:hover,.menu a[aria-current="page"]{color:var(--parch);}
.menu a[aria-current="page"]::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:2px;background:var(--or);}
.nav-cta{display:flex;align-items:center;gap:16px;}
.nav-cta .btn{padding:11px 22px;}
.burger{display:none;background:none;border:0;cursor:pointer;width:30px;height:24px;position:relative;}
.burger span{position:absolute;left:0;width:100%;height:2px;background:var(--parch);transition:.3s;}
.burger span:nth-child(1){top:2px;}.burger span:nth-child(2){top:11px;}.burger span:nth-child(3){top:20px;}
.burger.open span:nth-child(1){top:11px;transform:rotate(45deg);}
.burger.open span:nth-child(2){opacity:0;}
.burger.open span:nth-child(3){top:11px;transform:rotate(-45deg);}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--indigo);color:var(--parch);overflow:hidden;}
.hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1;opacity:.9;}
.hero .wrap{position:relative;z-index:2;padding-top:clamp(70px,11vw,130px);padding-bottom:clamp(70px,11vw,130px);}
.hero h1{color:var(--parch);font-size:clamp(40px,7.2vw,82px);line-height:1.02;max-width:16ch;}
.hero .lead{color:var(--brume);max-width:54ch;margin-top:26px;}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap;margin-top:38px;}
.hero-foot{position:relative;z-index:2;border-top:1px solid var(--line-d);}
.hero-foot .wrap{display:flex;flex-wrap:wrap;gap:8px 34px;padding:20px 28px;}
.hero-foot span{font-family:'IBM Plex Mono';font-size:11.5px;letter-spacing:.12em;color:#8aa0b8;text-transform:uppercase;}
.hero-foot span b{color:var(--or);font-weight:500;}

/* ---------- Positionnement ---------- */
.pos-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:clamp(36px,6vw,80px);align-items:center;}
.pos-grid blockquote{font-family:'Fraunces';font-style:italic;font-size:clamp(22px,3vw,30px);line-height:1.4;color:var(--indigo);}
.pos-grid .by{margin-top:18px;font-family:'IBM Plex Mono';font-size:12px;letter-spacing:.14em;color:var(--gris);text-transform:uppercase;}

/* ---------- Cards / expertises ---------- */
.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.card{background:var(--blanc);border:1px solid var(--line);border-radius:var(--r);padding:30px;transition:.28s;position:relative;overflow:hidden;}
.card::before{content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--or);transition:.3s;}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 40px -24px rgba(15,42,67,.4);border-color:var(--brume);}
.card:hover::before{width:100%;}
.card .no{font-family:'IBM Plex Mono';font-size:12px;color:var(--or);letter-spacing:.1em;}
.card h3{font-size:21px;margin:14px 0 10px;}
.card p{font-size:15px;color:#46535f;line-height:1.65;}
.section.parch .card{background:var(--blanc);}
.card-link{margin-top:16px;font-family:'IBM Plex Mono';font-size:12px;letter-spacing:.08em;color:var(--kaabu);text-transform:uppercase;display:inline-flex;gap:7px;}

/* ---------- Approche (séquence) ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:s;border-top:1px solid var(--line-d);}
.step{padding:34px 26px 30px;border-right:1px solid var(--line-d);position:relative;}
.step:last-child{border-right:0;}
.step .n{font-family:'IBM Plex Mono';font-size:13px;color:var(--or);letter-spacing:.1em;}
.step h3{font-size:22px;color:var(--parch);margin:16px 0 10px;}
.step p{font-size:14.5px;color:var(--brume);line-height:1.6;}
.step .dot{width:11px;height:11px;border-radius:50%;background:var(--or);margin-bottom:20px;}

/* ---------- Stats / impact ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.stat .n{font-family:'Fraunces';font-size:clamp(40px,5.5vw,60px);line-height:1;color:var(--or);}
.stat .l{font-size:14px;color:var(--brume);margin-top:14px;max-width:24ch;}
.stat{border-top:2px solid var(--line-d);padding-top:22px;}

/* ---------- Publications ---------- */
.pub{display:flex;gap:24px;align-items:flex-start;padding:26px 0;border-bottom:1px solid var(--line);transition:.2s;}
.pub:hover{padding-left:8px;}
.pub .date{font-family:'IBM Plex Mono';font-size:12px;color:var(--gris);letter-spacing:.08em;min-width:96px;padding-top:5px;}
.pub .tag{display:inline-block;font-family:'IBM Plex Mono';font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--argile);border:1px solid var(--line);border-radius:30px;padding:3px 11px;margin-bottom:9px;}
.pub h3{font-size:20px;}
.pub p{font-size:14.5px;color:#56616c;margin-top:6px;}

/* ---------- Partners ---------- */
.partners{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.partner{border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;}
.partner .pct{font-family:'Fraunces';font-size:30px;color:var(--indigo);}
.partner .lab{font-size:13.5px;color:var(--gris);margin-top:4px;}

/* ---------- CTA band ---------- */
.cta-band{background:var(--indigo);color:var(--parch);border-radius:14px;padding:clamp(40px,6vw,68px);position:relative;overflow:hidden;}
.cta-band canvas{position:absolute;inset:0;z-index:0;opacity:.5;}
.cta-band .inner{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;}
.cta-band h2{color:var(--parch);font-size:clamp(26px,3.6vw,40px);max-width:18ch;}
.cta-band p{color:var(--brume);margin-top:12px;max-width:46ch;}

/* ---------- Page hero (intérieures) ---------- */
.page-hero{background:var(--indigo);color:var(--parch);position:relative;overflow:hidden;}
.page-hero canvas{position:absolute;inset:0;z-index:0;opacity:.7;}
.page-hero .wrap{position:relative;z-index:1;padding:clamp(60px,8vw,104px) 28px clamp(48px,6vw,72px);}
.page-hero h1{color:var(--parch);font-size:clamp(34px,5.5vw,62px);max-width:18ch;margin-top:14px;}
.page-hero .lead{color:var(--brume);max-width:60ch;margin-top:22px;}

/* ---------- Prose / about ---------- */
.prose p{margin-bottom:18px;color:#33414e;}
.prose p:first-of-type{font-size:19px;color:var(--indigo);}
.chain{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px;}
.chain .c{border-left:2px solid var(--or);padding:4px 0 4px 16px;}
.chain .c .k{font-family:'IBM Plex Mono';font-size:11px;letter-spacing:.12em;color:var(--or);text-transform:uppercase;}
.chain .c .v{font-family:'Fraunces';font-size:17px;color:var(--indigo);margin-top:6px;}

.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.value{padding:24px;border:1px solid var(--line);border-radius:var(--r);}
.value .k{font-family:'IBM Plex Mono';font-size:11px;letter-spacing:.12em;color:var(--argile);text-transform:uppercase;}
.value h3{font-size:19px;margin:8px 0 8px;}
.value p{font-size:14.5px;color:#56616c;}

.manifesto{font-family:'Fraunces';font-size:clamp(20px,2.6vw,27px);line-height:1.5;color:var(--parch);max-width:24ch;}
.manifesto p{font-family:'Fraunces';font-size:inherit;margin-bottom:14px;}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,6vw,72px);}
.field{margin-bottom:18px;}
.field label{display:block;font-family:'IBM Plex Mono';font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gris);margin-bottom:7px;}
.field input,.field textarea,.field select{width:100%;font-family:'Inter';font-size:15px;padding:13px 15px;border:1px solid var(--line);border-radius:6px;background:var(--parch-2);color:var(--encre);transition:.2s;}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--kaabu);background:var(--blanc);box-shadow:0 0 0 3px rgba(28,78,124,.12);}
.coord{display:flex;flex-direction:column;gap:22px;}
.coord .it .k{font-family:'IBM Plex Mono';font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--or);}
.coord .it .v{font-size:16px;color:var(--indigo);margin-top:4px;}

/* ---------- Footer ---------- */
.site-foot{background:var(--indigo-2);color:var(--brume);padding:64px 0 30px;position:relative;}
.site-foot::before{content:"";position:absolute;top:0;left:0;right:0;height:18px;
  background:url(../img/frieze.svg) repeat-x center;background-size:auto 18px;transform:translateY(-100%);}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;}
.site-foot .brand{margin-bottom:18px;}
.site-foot .tagline{font-family:'Fraunces';font-style:italic;color:var(--or);font-size:18px;}
.foot-col h4{font-family:'IBM Plex Mono';font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:#8aa0b8;margin-bottom:16px;font-weight:500;}
.foot-col a{display:block;font-size:14px;color:var(--brume);padding:5px 0;transition:.2s;}
.foot-col a:hover{color:var(--or);}
.foot-bottom{margin-top:48px;padding-top:22px;border-top:1px solid var(--line-d);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-family:'IBM Plex Mono';font-size:11px;letter-spacing:.1em;color:#6f86a0;}

/* ---------- Reveal (amélioration progressive) ---------- */
.reveal{} /* visible par défaut : si JS absent, rien n'est masqué */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease;}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- Focus visible ---------- */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{
  outline:2px solid var(--or);outline-offset:3px;border-radius:3px;}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .grid-3,.partners{grid-template-columns:repeat(2,1fr);}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step{border-bottom:1px solid var(--line-d);}
  .step:nth-child(odd){border-right:1px solid var(--line-d);}
  .step:nth-child(2){border-right:0;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .chain{grid-template-columns:repeat(2,1fr);}
  .pos-grid,.contact-grid{grid-template-columns:1fr;}
  .foot-top{grid-template-columns:1fr 1fr;}
  .values{grid-template-columns:1fr 1fr;}
}
@media(max-width:680px){
  .menu,.nav-cta .btn{display:none;}
  .burger{display:block;}
  .menu.show{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;gap:0;
    background:var(--indigo);border-bottom:1px solid var(--line-d);padding:8px 0;}
  .menu.show li{width:100%;}
  .menu.show a{display:block;padding:14px 28px;border-bottom:1px solid var(--line-d);}
  .grid-3,.grid-2,.partners,.stats,.steps,.chain,.values{grid-template-columns:1fr;}
  .step{border-right:0;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;}
  .pub{flex-direction:column;gap:8px;}
  .foot-top{grid-template-columns:1fr;}
  .hero-cta .btn{flex:1;justify-content:center;}
}
@media(prefers-reduced-motion:reduce){
  *{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  .hero canvas,.page-hero canvas,.cta-band canvas{display:none;}
}