/* =========================================================
   Solutions Formation — Direction éditoriale audacieuse
   Crème chaud · encre profond · corail vif · grain · grands titres
   ========================================================= */

:root{
  --paper:     #f4ede0;   /* crème chaud */
  --paper-2:   #efe6d6;
  --ink:       #1c1a17;   /* encre quasi-noir chaud */
  --ink-soft:  #5b554c;
  --ink-dim:   #938b7e;
  --coral:     #ff5436;   /* corail vif - accent principal */
  --coral-dk:  #e63d20;
  --berry:     #2a2440;   /* prune profond - second accent */
  --leaf:      #1f6b4f;   /* vert pour validations */
  --sun:       #f2b705;   /* jaune solaire - touches */
  --line:      #d8cdb a;
  --line:      #d8cdba;
  --card:      #fbf6ec;
  --radius:    22px;
  --maxw:      1200px;
  --ease:      cubic-bezier(.22,.68,.28,1);
  --serif:     'Fraunces', Georgia, serif;
  --sans:      'Outfit', -apple-system, sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:400;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}
/* Grain overlay sur tout le site */
body::after{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.5;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.06'/%3E%3C/svg%3E");
}
main{position:relative;z-index:2}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 26px}

h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.02;letter-spacing:-.02em;color:var(--ink)}
h1{font-size:clamp(2.8rem,9vw,6.5rem);font-weight:600;font-optical-sizing:auto}
h2{font-size:clamp(2.1rem,5.5vw,3.8rem)}
h3{font-size:1.45rem;letter-spacing:-.01em}
p{color:var(--ink-soft)}
a{color:inherit;text-decoration:none}
em{font-style:italic;color:var(--coral)}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--sans);font-weight:600;
  text-transform:uppercase;letter-spacing:.22em;font-size:.72rem;
  color:var(--ink);margin-bottom:1.4rem;
}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--coral)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(244,237,224,.82);backdrop-filter:blur(12px);
  border-bottom:2px solid var(--ink);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand-logo{display:block;height:46px;width:auto;transition:transform .35s var(--ease)}
.brand:hover .brand-logo{transform:scale(1.03)}

.site-nav{display:flex;align-items:center;gap:2rem}
.site-nav a{font-size:.96rem;font-weight:500;color:var(--ink);transition:color .2s var(--ease);position:relative}
.site-nav a:not(.nav-cta)::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:2px;background:var(--coral);transition:width .28s var(--ease)}
.site-nav a:not(.nav-cta):hover::after,.site-nav a.active:not(.nav-cta)::after{width:100%}
.site-nav a.active{color:var(--coral)}
.nav-cta{
  padding:.62rem 1.3rem;border-radius:999px;
  background:var(--ink);color:var(--paper)!important;font-weight:600;
  border:2px solid var(--ink);
  transition:transform .22s var(--ease),background .22s,color .22s,box-shadow .22s;
}
.nav-cta:hover{background:var(--coral);border-color:var(--coral);transform:translate(-2px,-2px);box-shadow:3px 3px 0 var(--ink)}

.nav-toggle{display:none;flex-direction:column;gap:6px;background:none;border:0;cursor:pointer;padding:6px}
.nav-toggle span{width:28px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s var(--ease)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.6rem;
  padding:1rem 1.8rem;border-radius:999px;font-weight:600;font-size:1.02rem;
  border:2px solid var(--ink);cursor:pointer;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s,color .2s;
}
.btn-primary{background:var(--coral);color:#fff}
.btn-primary:hover{transform:translate(-3px,-3px);box-shadow:5px 5px 0 var(--ink)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translate(-3px,-3px);box-shadow:5px 5px 0 var(--coral)}
.btn .arrow{transition:transform .22s var(--ease)}
.btn:hover .arrow{transform:translateX(5px)}

/* ---------- Sections ---------- */
section{padding:clamp(4rem,9vw,7.5rem) 0;position:relative}
.section-head{max-width:720px;margin-bottom:3.4rem}
.section-head.center{margin-inline:auto;text-align:center}
.section-head p{margin-top:1.1rem;font-size:1.15rem}
.bg-ink{background:var(--ink);color:var(--paper)}
.bg-ink h2,.bg-ink h3,.bg-ink h4{color:var(--paper)}
.bg-ink p{color:#c9c1b4}
.bg-berry{background:var(--berry);color:var(--paper)}
.bg-berry h2,.bg-berry h3{color:var(--paper)}
.bg-berry p{color:#c4bdd6}

/* ---------- Hero ---------- */
.hero{padding:clamp(3.5rem,7vw,6rem) 0 clamp(3rem,6vw,5rem);position:relative;overflow:hidden}
.hero .blob{position:absolute;border-radius:50%;z-index:0;opacity:.95;will-change:transform}
.hero .blob-1{width:230px;height:230px;background:var(--sun);top:8%;right:6%;border-radius:48% 52% 60% 40%/55% 45% 55% 45%;animation:float 9s ease-in-out infinite}
.hero .blob-2{width:120px;height:120px;background:var(--coral);bottom:18%;right:24%;border-radius:50%;animation:float 7s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-22px) rotate(8deg)}}
.hero-inner{position:relative;z-index:2}
.hero h1{margin-bottom:1.6rem;position:relative}
.hero h1 .line2{display:block}
.hero h1 .mark{position:relative;display:inline-block;color:var(--coral)}
.hero h1 .mark::after{content:"";position:absolute;left:-2%;right:-2%;bottom:.08em;height:.16em;background:var(--sun);z-index:-1;transform:rotate(-1.5deg)}
.hero-lead{font-size:clamp(1.1rem,2vw,1.4rem);max-width:600px;color:var(--ink-soft)}
.hero-actions{display:flex;flex-wrap:wrap;gap:1.1rem;margin-top:2.6rem}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:4rem;border:2px solid var(--ink);border-radius:18px;overflow:hidden;max-width:760px}
.stat{flex:1;min-width:160px;padding:1.5rem 1.6rem;border-right:2px solid var(--ink)}
.stat:last-child{border-right:0}
.stat .num{font-family:var(--serif);font-size:1.5rem;font-weight:600;color:var(--coral);display:block;line-height:1.1}
.stat .lbl{font-size:.88rem;color:var(--ink-soft);margin-top:.2rem}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:1.5rem}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--card);border:2px solid var(--ink);border-radius:var(--radius);
  padding:2rem;transition:transform .3s var(--ease),box-shadow .3s var(--ease);
  position:relative;
}
.card:hover{transform:translate(-4px,-4px);box-shadow:8px 8px 0 var(--ink)}
.card:nth-child(3n+1):hover{box-shadow:8px 8px 0 var(--coral)}
.card:nth-child(3n+2):hover{box-shadow:8px 8px 0 var(--berry)}
.card:nth-child(3n):hover{box-shadow:8px 8px 0 var(--leaf)}
.card .ico{width:54px;height:54px;border-radius:14px 14px 14px 4px;display:grid;place-items:center;margin-bottom:1.2rem;
  background:var(--paper);border:2px solid var(--ink);font-size:1.5rem;transform:rotate(-4deg)}
.card h3{margin-bottom:.55rem}
.card p{font-size:.98rem}

/* ---------- Priority / highlight ---------- */
.priority{
  background:var(--berry);color:var(--paper);
  border:2px solid var(--ink);border-radius:28px;padding:clamp(2.2rem,5vw,3.6rem);
  position:relative;overflow:hidden;box-shadow:10px 10px 0 var(--ink);
}
.priority h2{color:var(--paper)}
.priority .lede{color:#cfc8e0}
.priority .badge{display:inline-block;font-size:.72rem;text-transform:uppercase;letter-spacing:.16em;font-weight:700;
  color:var(--ink);background:var(--sun);padding:.42rem .9rem;border-radius:999px;margin-bottom:1.3rem;border:2px solid var(--ink)}
.priority .list-check li{color:#e6e1f0}
.priority .btn-primary{border-color:var(--paper)}

/* ---------- Process steps ---------- */
.steps{counter-reset:step;display:grid;gap:1.1rem}
.step{display:flex;gap:1.5rem;align-items:flex-start;padding:1.6rem 1.7rem;background:var(--card);border:2px solid var(--ink);border-radius:18px;transition:transform .25s var(--ease)}
.step:hover{transform:translateX(6px)}
.step::before{counter-increment:step;content:counter(step,decimal-leading-zero);font-family:var(--serif);
  font-size:2rem;font-weight:600;color:var(--coral);min-width:2.8rem;line-height:1}
.step h4{margin-bottom:.3rem;font-size:1.12rem}
.step p{font-size:.96rem}
.priority .step{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.25)}
.priority .step h4{color:var(--paper)}
.priority .step p{color:#cfc8e0}
.priority .step::before{color:var(--sun)}

/* ---------- Portfolio ---------- */
.case{
  background:var(--card);border:2px solid var(--ink);border-radius:var(--radius);overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.case:hover{transform:translate(-4px,-4px);box-shadow:8px 8px 0 var(--coral)}
.case:nth-child(even):hover{box-shadow:8px 8px 0 var(--berry)}
.case .thumb{aspect-ratio:16/10;position:relative;display:grid;place-items:center;border-bottom:2px solid var(--ink);
  background-image:repeating-linear-gradient(45deg,var(--paper-2) 0 14px,var(--card) 14px 28px)}
.case .thumb span{font-family:var(--serif);font-size:3rem;font-weight:600;color:var(--ink);background:var(--sun);
  width:84px;height:84px;border-radius:50%;display:grid;place-items:center;border:2px solid var(--ink)}
.case .body{padding:1.7rem}
.case .tag{display:inline-block;font-size:.7rem;text-transform:uppercase;letter-spacing:.12em;font-weight:700;color:var(--coral)}
.case h3{margin:.5rem 0 .6rem;font-size:1.25rem}
.case .result{margin-top:1.1rem;padding-top:1.1rem;border-top:2px dotted var(--line);font-size:.92rem;color:var(--ink-soft)}
.case .result b{color:var(--leaf);font-family:var(--serif);font-size:1.05rem}

/* ---------- CTA band ---------- */
.cta-band{background:var(--coral);border:2px solid var(--ink);border-radius:28px;padding:clamp(2.6rem,6vw,4.2rem);text-align:center;color:#fff;box-shadow:10px 10px 0 var(--ink);position:relative;overflow:hidden}
.cta-band h2{color:#fff;font-size:clamp(2rem,5vw,3.4rem)}
.cta-band p{color:rgba(255,255,255,.92);max-width:560px;margin:1.1rem auto 2.2rem;font-size:1.1rem}
.cta-band .btn-primary{background:var(--paper);color:var(--ink);border-color:var(--ink)}
.cta-band .btn-primary:hover{box-shadow:5px 5px 0 var(--berry)}

/* ---------- Forms ---------- */
.form-wrap{background:var(--card);border:2px solid var(--ink);border-radius:26px;padding:clamp(1.9rem,4vw,2.8rem);box-shadow:8px 8px 0 var(--ink)}
.field{margin-bottom:1.3rem}
.field label{display:block;font-size:.9rem;font-weight:600;color:var(--ink);margin-bottom:.5rem}
.field input,.field select,.field textarea{
  width:100%;background:var(--paper);border:2px solid var(--ink);border-radius:12px;
  padding:.9rem 1.05rem;color:var(--ink);font-family:inherit;font-size:1rem;transition:box-shadow .2s,transform .15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;box-shadow:4px 4px 0 var(--coral)}
.field textarea{min-height:140px;resize:vertical}
.alert{padding:1rem 1.2rem;border-radius:14px;margin-bottom:1.6rem;font-size:.95rem;border:2px solid var(--ink)}
.alert-ok{background:#dff3e9;color:var(--leaf)}
.alert-err{background:#fde3de;color:var(--coral-dk)}

/* ---------- Misc ---------- */
.contact-aside{display:flex;flex-direction:column;gap:1.1rem}
.contact-aside .line{display:flex;gap:1rem;align-items:flex-start;padding:1.3rem;background:var(--card);border:2px solid var(--ink);border-radius:18px;transition:transform .25s var(--ease)}
.contact-aside .line:hover{transform:translateX(5px)}
.contact-aside .line .ico{font-size:1.4rem}
.lede{font-size:1.18rem;color:var(--ink-soft);max-width:720px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:3.4rem;align-items:center}
.list-check{list-style:none;display:grid;gap:.9rem;margin-top:1.5rem}
.list-check li{display:flex;gap:.75rem;color:var(--ink-soft);font-size:1rem;align-items:flex-start}
.list-check li::before{content:"→";color:var(--coral);font-weight:700;font-size:1.1rem}
.prose p{margin-bottom:1rem}
.prose h3{margin:2rem 0 .8rem}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:var(--paper);padding:4rem 0 2rem;margin-top:3rem;position:relative;z-index:2}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.2rem}
.footer-logo{display:block;height:52px;width:auto}
.footer-brand p{margin-top:1.1rem;font-size:.94rem;max-width:290px;color:#b8b0a3}
.footer-col h4{font-family:var(--sans);font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;color:var(--coral);margin-bottom:1rem;font-weight:700}
.footer-col a{display:block;font-size:.96rem;color:#d4ccbf;padding:.32rem 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:var(--paper);transform:translateX(4px)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:3rem;padding-top:1.8rem;border-top:1px solid #3a362f;font-size:.88rem;color:#938b7e}
.footer-bottom a{color:#938b7e}
.footer-bottom a:hover{color:var(--coral)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:2.2rem}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-toggle{display:flex}
  .brand-logo{height:38px}
  .hero .blob-1{width:150px;height:150px}
  .site-nav{
    position:fixed;inset:76px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;
    background:var(--paper);border-bottom:2px solid var(--ink);padding:1rem 26px 1.6rem;
    transform:translateY(-130%);transition:transform .34s var(--ease);max-height:calc(100vh - 76px);overflow:auto}
  .site-nav.open{transform:none}
  .site-nav a{width:100%;padding:.95rem 0;border-bottom:1px solid var(--line)}
  .site-nav .nav-cta{margin-top:1rem;width:100%;justify-content:center;border-bottom:0;color:var(--paper)!important}
}
@media(max-width:600px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:.6rem;text-align:center}
  .stat{border-right:0;border-bottom:2px solid var(--ink)}
  .stat:last-child{border-bottom:0}
}

/* ---------- Cartes sur fond sombre (section IA) ---------- */
.bg-ink .card{background:var(--card)}
.bg-ink .card h3{color:var(--ink)}
.bg-ink .card p{color:var(--ink-soft)}
.bg-ink .eyebrow{color:var(--sun)}
.bg-ink .eyebrow::before{background:var(--sun)}

/* ---------- Vignette portfolio avec image réelle ---------- */
.case .thumb-img{
  background-size:cover;background-position:center center;background-repeat:no-repeat;
}
.case:hover .thumb-img{filter:saturate(1.05)}