/* Tatiana Czerepaniak · Conseil en communication · charte encre-papier-cuivre */
:root{
  --encre:#2E3440; --encre-douce:#5C6470; --papier:#FAF6F0; --papier-fonce:#F3EDE4;
  --cuivre:#B5654D; --cuivre-fonce:#9A5340; --sable:#E8D5C4; --sauge:#7C8B76;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;} .reveal{opacity:1!important;transform:none!important;transition:none!important;}}
body{font-family:'Inter',sans-serif;background:var(--papier);color:var(--encre);line-height:1.7;font-size:17px;}
h1,h2,h3,.serif{font-family:'Playfair Display',Georgia,serif;}
a{color:var(--cuivre);text-decoration:none;}
a:hover{color:var(--cuivre-fonce);}
a:focus-visible,button:focus-visible{outline:3px solid var(--cuivre);outline-offset:3px;border-radius:4px;}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px;}

/* NAV */
header{position:sticky;top:0;z-index:50;background:rgba(250,246,240,0.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--sable);}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;}
.brand{display:flex;align-items:center;gap:12px;color:var(--encre);}
.brand svg{width:40px;height:40px;flex:none;}
.brand .bn{font-family:'Playfair Display',serif;font-weight:700;font-size:1.15rem;line-height:1.1;}
.brand .bn em{font-style:italic;color:var(--cuivre);font-weight:500;}
nav ul{display:flex;gap:28px;list-style:none;}
nav a{color:var(--encre);font-weight:600;font-size:0.92rem;letter-spacing:0.02em;}
nav a:hover,nav a[aria-current]{color:var(--cuivre);}
nav a[aria-current]{border-bottom:2px solid var(--cuivre);padding-bottom:3px;}
.burger{display:none;background:none;border:none;cursor:pointer;padding:8px;}
.burger span{display:block;width:24px;height:2px;background:var(--encre);margin:5px 0;transition:0.25s;}
#navtoggle{display:none;}
@media (max-width:820px){
  .burger{display:block;}
  nav ul{display:none;position:absolute;top:72px;left:0;right:0;background:var(--papier);flex-direction:column;gap:0;border-bottom:1px solid var(--sable);padding:8px 0;}
  nav ul li a{display:block;padding:14px 24px;border-bottom:none;}
  #navtoggle:checked ~ nav ul{display:flex;}
}

/* HERO signature : la parole entre les guillemets du sigle */
.hero{position:relative;padding:96px 0 72px;overflow:hidden;}
.hero .quote-l,.hero .quote-r{position:absolute;width:180px;height:180px;opacity:0.16;}
.hero .quote-l{top:40px;left:-30px;}
.hero .quote-r{bottom:20px;right:-30px;transform:rotate(180deg);}
.eyebrow{font-weight:700;font-size:0.78rem;letter-spacing:0.22em;text-transform:uppercase;color:var(--cuivre);margin-bottom:18px;}
.hero h1{font-size:clamp(2.2rem,5.4vw,3.9rem);font-weight:700;line-height:1.12;letter-spacing:-0.01em;max-width:18ch;}
.hero h1 .it{font-style:italic;color:var(--cuivre);}
.chapo{font-family:'Playfair Display',serif;font-style:italic;font-size:clamp(1.05rem,2.2vw,1.3rem);color:var(--encre-douce);max-width:56ch;margin:26px 0 34px;line-height:1.65;}
.cta{display:inline-block;background:var(--cuivre);color:#fff;font-weight:700;padding:15px 30px;border-radius:40px;font-size:1rem;transition:background 0.2s, transform 0.2s;}
.cta:hover{background:var(--cuivre-fonce);color:#fff;transform:translateY(-2px);}
.cta.ghost{background:transparent;color:var(--encre);border:2px solid var(--encre);margin-left:14px;}
.cta.ghost:hover{border-color:var(--cuivre);color:var(--cuivre);background:transparent;}

/* Preuves */
.proofband{background:var(--encre);color:var(--papier);padding:44px 0;}
.proofband .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.proof .n{font-family:'Playfair Display',serif;font-weight:700;font-size:2rem;color:var(--sable);}
.proof .l{font-size:0.85rem;color:rgba(250,246,240,0.75);line-height:1.5;margin-top:4px;}
@media (max-width:820px){.proofband .wrap{grid-template-columns:repeat(2,1fr);}}

/* Sections */
section{padding:78px 0;}
section.tinted{background:var(--papier-fonce);}
.sec-head{margin-bottom:44px;max-width:60ch;}
.sec-head h2{font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.2;margin-top:10px;}
.sec-head p{color:var(--encre-douce);margin-top:14px;}

/* Cartes offres */
.offers{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.card{background:#fff;border:1px solid var(--sable);border-radius:16px;padding:30px 28px;transition:transform 0.2s, box-shadow 0.2s;position:relative;}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(46,52,64,0.09);}
.card .tag{font-size:0.72rem;font-weight:700;letter-spacing:0.16em;text-transform:uppercase;color:var(--cuivre);}
.card h3{font-size:1.32rem;margin:8px 0 10px;}
.card p{font-size:0.95rem;color:var(--encre-douce);}
.card .more{display:inline-block;margin-top:14px;font-weight:700;font-size:0.9rem;}
.card.phare{grid-column:1 / -1;background:var(--encre);border-color:var(--encre);}
.card.phare h3{color:var(--papier);font-size:1.6rem;}
.card.phare p{color:rgba(250,246,240,0.82);max-width:64ch;}
.card.phare .tag{color:var(--sable);}
@media (max-width:820px){.offers{grid-template-columns:1fr;}}

/* Citation conviction */
.conviction{text-align:center;position:relative;}
.conviction blockquote{font-family:'Playfair Display',serif;font-style:italic;font-size:clamp(1.4rem,3.2vw,2.1rem);line-height:1.45;max-width:26ch;margin:0 auto;color:var(--encre);}
.conviction blockquote strong{color:var(--cuivre);font-weight:700;}
.conviction .who{margin-top:22px;font-size:0.85rem;letter-spacing:0.18em;text-transform:uppercase;color:var(--encre-douce);font-weight:700;}

/* Études de cas */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.case{background:#fff;border:1px solid var(--sable);border-radius:16px;padding:28px;}
.case .r{font-family:'Playfair Display',serif;font-weight:700;font-size:1.7rem;color:var(--cuivre);}
.case h3{font-size:1.05rem;margin:6px 0 8px;}
.case p{font-size:0.9rem;color:var(--encre-douce);}
@media (max-width:820px){.cases{grid-template-columns:1fr;}}

/* Offre détaillée */
.offer-block{border-left:4px solid var(--cuivre);padding:6px 0 6px 30px;margin:56px 0;}
.offer-block h2{font-size:clamp(1.5rem,3vw,2.1rem);}
.offer-block .for{font-style:italic;font-family:'Playfair Display',serif;color:var(--encre-douce);margin:10px 0 18px;font-size:1.05rem;}
.offer-block ul{margin:14px 0 18px 20px;}
.offer-block li{margin-bottom:8px;color:var(--encre-douce);font-size:0.97rem;}
.price-line{background:var(--papier-fonce);border:1px solid var(--sable);border-radius:12px;padding:16px 22px;display:inline-block;font-size:0.95rem;}
.price-line b{color:var(--cuivre);font-size:1.1rem;}

/* À propos */
.split{display:grid;grid-template-columns:1.15fr 0.85fr;gap:52px;align-items:start;}
@media (max-width:820px){.split{grid-template-columns:1fr;}}
.portrait-wrap{position:sticky;top:100px;}
.portrait{background:var(--sable);border-radius:18px;aspect-ratio:4/5;width:100%;max-width:340px;object-fit:cover;object-position:center top;display:block;margin-left:auto;box-shadow:0 18px 48px rgba(46,52,64,0.16);}
.portrait-cap{text-align:center;max-width:340px;margin:14px 0 0 auto;font-family:'Playfair Display',serif;font-style:italic;font-size:0.9rem;color:#8a8f98;}
.bio p{margin-bottom:18px;color:var(--encre-douce);}
.bio p b{color:var(--encre);}
.vals{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:26px;}
.val{background:#fff;border:1px solid var(--sable);border-radius:12px;padding:18px;}
.val h4{font-size:0.95rem;margin-bottom:4px;}
.val p{font-size:0.85rem;color:var(--encre-douce);}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr;}}
.contact-card{background:#fff;border:1px solid var(--sable);border-radius:16px;padding:34px;}
.contact-card h3{margin-bottom:14px;}
.contact-card li{list-style:none;margin-bottom:12px;color:var(--encre-douce);}
.contact-card li b{color:var(--encre);display:block;font-size:0.82rem;letter-spacing:0.1em;text-transform:uppercase;}

/* Reveal */
.reveal{opacity:0;transform:translateY(18px);transition:opacity 0.6s ease, transform 0.6s ease;}
.reveal.in{opacity:1;transform:none;}

/* CTA final */
.final{background:var(--encre);color:var(--papier);text-align:center;padding:88px 0;}
.final h2{font-size:clamp(1.8rem,4vw,2.6rem);color:var(--papier);max-width:22ch;margin:0 auto 18px;}
.final p{color:rgba(250,246,240,0.75);margin-bottom:30px;}

/* Footer */
footer{background:var(--papier);border-top:1px solid var(--sable);padding:36px 0;font-size:0.85rem;color:var(--encre-douce);}
.foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center;}

/* Formats */
.formats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media (max-width:820px){.formats{grid-template-columns:repeat(2,1fr);}}
.fmt{background:#fff;border:1px solid var(--sable);border-radius:14px;padding:22px 20px;}
.fmt h4{font-family:'Playfair Display',serif;font-size:1.08rem;margin-bottom:6px;}
.fmt p{font-size:0.86rem;color:var(--encre-douce);}
.channels{margin-top:26px;text-align:center;font-size:0.9rem;color:var(--encre-douce);}
.channels b{color:var(--encre);}