/* ===== IA.do — feuille de style ===== */
:root{
  --teal:#158497;
  --teal-dark:#0f6675;
  --orange:#E2892F;
  --orange-dark:#c9741f;
  --ink:#1E2228;
  --ink-soft:#2a2f38;
  --cream:#F1EEE8;
  --cream-soft:#f7f5f0;
  --slate:#5A6478;
  --line:#e0ddd3;
  --radius:18px;
  --shadow:0 18px 45px -22px rgba(30,34,40,.45);
  --wrap:1150px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Poppins',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--ink);
  background:var(--cream);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
.nowrap{white-space:nowrap}
.teal{color:var(--teal)}
.orange{color:var(--orange)}
.passager{color:var(--slate);text-decoration:line-through;text-decoration-thickness:3px;text-decoration-color:var(--orange)}
.thin{font-weight:400;color:var(--slate)}

/* ---- Buttons ---- */
.btn{
  display:inline-block;border-radius:999px;padding:14px 26px;
  font-weight:600;font-size:1rem;text-decoration:none;cursor:pointer;
  border:2px solid transparent;transition:transform .15s ease,box-shadow .15s ease,background .15s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn-orange{background:var(--orange);color:#fff;box-shadow:0 10px 22px -10px rgba(226,137,47,.8)}
.btn-orange:hover{background:var(--orange-dark)}
.btn-ghost{background:transparent;border-color:var(--teal);color:var(--teal)}
.btn-ghost:hover{background:var(--teal);color:#fff}
.btn-sm{padding:10px 18px;font-size:.95rem}
.btn-block{width:100%;text-align:center}
.btn sup{font-size:.6em}

/* ---- Header ---- */
.header{position:sticky;top:0;z-index:50;background:rgba(241,238,232,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:74px}
.brand img{height:38px;width:auto}
.mainnav{display:flex;align-items:center;gap:26px}
.mainnav a{text-decoration:none;font-weight:500;color:var(--ink);font-size:.98rem}
.mainnav a:hover{color:var(--teal)}
.mainnav a.btn{color:#fff}
.navtoggle{display:none;background:none;border:0;font-size:1.6rem;color:var(--ink);cursor:pointer}

/* ---- Hero ---- */
.hero{padding:72px 0 64px;background:
  radial-gradient(1200px 500px at 85% -10%, rgba(21,132,151,.10), transparent 60%),
  radial-gradient(900px 500px at 0% 120%, rgba(226,137,47,.10), transparent 55%);}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:600;color:var(--teal);background:rgba(21,132,151,.1);padding:6px 14px;border-radius:999px;margin:0 0 22px}
.hero h1{font-size:clamp(2.4rem,5.4vw,4rem);line-height:1.05;font-weight:800;margin:0 0 22px;letter-spacing:-.02em}
.lede{font-size:1.18rem;color:#3a4049;max-width:36ch;margin:0 0 30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}
.hero-note{font-size:.95rem;color:var(--slate);margin:0}
.hero-visual{display:flex;justify-content:center}
.hero-badge{
  position:relative;background:var(--ink);color:var(--cream);border-radius:24px;
  padding:38px 34px;font-size:1.28rem;font-weight:500;line-height:1.4;max-width:340px;box-shadow:var(--shadow);
}
.hero-badge .dot{display:block;width:20px;height:20px;border-radius:50%;background:var(--orange);margin-bottom:18px}
.hero-badge::after{content:"IA•do";position:absolute;bottom:-14px;right:22px;background:var(--teal);color:#fff;font-weight:700;padding:4px 12px;border-radius:8px;font-size:.8rem;letter-spacing:.03em}

/* ---- Sections ---- */
.section{padding:84px 0}
.section-soft{background:var(--cream-soft)}
.section-ink{background:var(--ink);color:var(--cream)}
.section-head{max-width:640px;margin:0 auto 48px}
.section-head.center{text-align:center}
.kicker{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:var(--orange);margin:0 0 12px}
.kicker.light{color:var(--orange)}
h2{font-size:clamp(1.8rem,3.6vw,2.6rem);line-height:1.15;font-weight:700;letter-spacing:-.015em;margin:0 0 16px}
.intro{font-size:1.1rem;color:#41474f;margin:0}
.intro-light{font-size:1.12rem;color:#c9ccd2;margin:0 0 24px;max-width:52ch}

/* ---- Manifeste ---- */
.manifeste{text-align:center;max-width:820px}
.manifeste h2{color:var(--cream)}
.manifeste .intro-light{margin-left:auto;margin-right:auto}
.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:44px;text-align:left}
.pillar{background:var(--ink-soft);border:1px solid rgba(255,255,255,.07);border-radius:var(--radius);padding:26px}
.pillar h3{margin:0 0 8px;font-size:1.12rem;color:var(--teal)}
.pillar p{margin:0;color:#c2c6cd;font-size:.98rem}

/* ---- Livre ---- */
.book-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
.book-cover img{border-radius:12px;box-shadow:var(--shadow);margin:0 auto;max-width:340px}
.book-copy h2 .thin{display:inline}
.book-points{list-style:none;padding:0;margin:22px 0 28px;display:grid;gap:12px}
.book-points li{position:relative;padding-left:30px;color:#3a4049}
.book-points li::before{content:"✦";position:absolute;left:0;top:0;color:var(--orange);font-weight:700}
.book-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:14px}
.micro{font-size:.85rem;color:var(--slate);margin:0}

/* ---- Cards ---- */
.cards{display:grid;gap:22px;margin-bottom:40px}
.cards.three{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:0 10px 30px -24px rgba(30,34,40,.5);transition:transform .15s ease,box-shadow .15s ease}
.card:hover{transform:translateY(-4px);box-shadow:0 22px 40px -26px rgba(30,34,40,.55)}
.card .ico{width:48px;height:48px;border-radius:12px;background:rgba(21,132,151,.12);color:var(--teal);display:grid;place-items:center;font-size:1.3rem;font-weight:700;margin-bottom:16px}
.card h3{margin:0 0 8px;font-size:1.22rem}
.card p{margin:0;color:#41474f}
.center{text-align:center}

/* ---- Audiences ---- */
.audience{border-radius:var(--radius);padding:30px;background:#fff;border:1px solid var(--line);border-top:5px solid var(--teal)}
.audience .tag{display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:5px 12px;border-radius:999px;margin-bottom:14px;color:#fff}
.audience h3{margin:0 0 10px;font-size:1.25rem}
.audience p{margin:0;color:#41474f}
.audience-ados{border-top-color:var(--teal)} .audience-ados .tag{background:var(--teal)}
.audience-parents{border-top-color:var(--orange)} .audience-parents .tag{background:var(--orange)}
.audience-profs{border-top-color:var(--ink)} .audience-profs .tag{background:var(--ink)}

/* ---- Tips ---- */
.tips{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.tip{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;position:relative}
.tip-num{font-size:.85rem;font-weight:700;color:var(--orange);letter-spacing:.05em}
.tip h3{margin:8px 0 10px;font-size:1.2rem}
.tip p{margin:0;color:#41474f}
.prompt{display:block;margin-top:10px;background:var(--cream);border-left:3px solid var(--teal);padding:12px 14px;border-radius:8px;font-size:.94rem;color:var(--ink)}

/* ---- Newsletter ---- */
.news-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.news-copy h2{color:var(--cream)}
.check{list-style:none;padding:0;margin:6px 0 0;display:grid;gap:10px}
.check li{position:relative;padding-left:30px;color:#c9ccd2}
.check li::before{content:"✓";position:absolute;left:0;top:0;color:var(--teal);font-weight:800}
.news-form{background:var(--cream);border-radius:20px;padding:28px;box-shadow:var(--shadow)}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}
.field input,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff;color:var(--ink)}
.field input:focus,.field select:focus{outline:2px solid var(--teal);border-color:var(--teal)}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;color:#41474f;margin:6px 0 18px}
.consent input{margin-top:4px}
.hp{position:absolute;left:-9999px}

/* ---- Footer ---- */
.footer{background:var(--cream-soft);border-top:1px solid var(--line);padding:56px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.2fr;gap:30px}
.footer-logo{height:34px;margin-bottom:12px}
.footer-tag{margin:0;color:var(--slate);font-size:.95rem}
.fnav{display:flex;flex-direction:column;gap:10px}
.fnav a{text-decoration:none;color:var(--ink);font-weight:500}
.fnav a:hover{color:var(--teal)}
.fcontact{display:flex;flex-direction:column;gap:10px}
.fcontact a{text-decoration:none;color:var(--teal);font-weight:500}
.fcontact a:hover{text-decoration:underline}
.fmuted{color:var(--slate);font-size:.9rem}
.footer-legal{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:20px;border-top:1px solid var(--line);color:var(--slate);font-size:.85rem}
.footer-legal a{color:var(--slate)}

/* ---- Pages légales ---- */
.legal{padding:56px 0 72px;max-width:820px}
.legal .back{display:inline-block;margin-bottom:26px;color:var(--teal);text-decoration:none;font-weight:600;font-size:.95rem}
.legal .back:hover{text-decoration:underline}
.legal h1{font-size:clamp(2rem,4.4vw,2.8rem);font-weight:800;letter-spacing:-.02em;margin:0 0 10px}
.legal .updated{color:var(--slate);font-size:.9rem;margin:0 0 40px}
.legal h2{font-size:1.35rem;margin:40px 0 12px;padding-top:18px;border-top:1px solid var(--line)}
.legal h3{font-size:1.05rem;margin:24px 0 8px;color:var(--teal)}
.legal p,.legal li{color:#3a4049}
.legal ul{padding-left:22px;margin:10px 0}
.legal li{margin-bottom:8px}
.legal a{color:var(--teal)}
.legal .box{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:12px;padding:20px 24px;margin:18px 0}
.legal .box p{margin:0 0 6px}
.legal .box p:last-child{margin:0}
.legal dl{margin:0}
.legal dt{font-weight:600;margin-top:14px}
.legal dd{margin:4px 0 0;color:#3a4049}
.legal table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.95rem}
.legal th,.legal td{text-align:left;padding:10px 12px;border:1px solid var(--line);vertical-align:top}
.legal th{background:var(--cream-soft);font-weight:600}

/* ---- Page de lecture (extrait) ---- */
.reader{padding:56px 0 80px;max-width:700px}
.reader .back{display:inline-block;margin-bottom:26px;color:var(--teal);text-decoration:none;font-weight:600;font-size:.95rem}
.reader .back:hover{text-decoration:underline}
.reader .chapnum{text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:700;color:var(--orange);margin:0 0 10px}
.reader h1{font-size:clamp(2rem,4.6vw,2.9rem);font-weight:800;letter-spacing:-.02em;margin:0 0 8px;line-height:1.1}
.reader .booktitle{color:var(--slate);font-size:1rem;margin:0 0 40px}
.reader .prose{font-family:Georgia,'Iowan Old Style','Times New Roman',serif;font-size:1.14rem;line-height:1.78;color:#2b3038}
.reader .prose p{margin:0 0 1.25em}
.reader .prose em{font-style:italic}
.reader .epigraph{font-style:italic;color:var(--slate);border-left:3px solid var(--teal);padding:4px 0 4px 20px;margin:0 0 36px}
.reader .dedication{font-family:Georgia,serif;font-style:italic;color:var(--slate);text-align:center;line-height:1.7;margin:0 0 14px}
.reader .sep{border:0;height:1px;background:var(--line);margin:36px auto;width:60%}
.reader .scenebreak{text-align:center;color:var(--slate);letter-spacing:.5em;margin:26px 0}
.reader .note{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 30px;margin:0 0 44px}
.reader .note h2{font-size:1.2rem;margin:0 0 14px}
.reader .note p{font-size:1rem;line-height:1.7;color:#3a4049;margin:0 0 1em}
.reader .note p:last-child{margin:0}
.reader .signature{font-family:Georgia,serif;font-style:italic;color:var(--teal)}
.reader .terminus{font-family:Georgia,serif;text-align:center;font-size:1.3rem;letter-spacing:.08em;color:var(--ink);margin:32px 0}
.endcta{background:var(--ink);color:var(--cream);border-radius:20px;padding:40px 34px;text-align:center;margin-top:56px}
.endcta h2{color:var(--cream);font-size:1.6rem;margin:0 0 12px}
.endcta p{color:#c9ccd2;margin:0 0 24px}
.endcta .btn+.btn{margin-left:10px}

/* ---- Responsive ---- */
@media (max-width:900px){
  .hero-grid,.book-grid,.news-grid{grid-template-columns:1fr;gap:34px}
  .hero-visual{order:-1}
  .cards.three,.pillars{grid-template-columns:1fr}
  .tips{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .book-cover img{max-width:260px}
}
@media (max-width:720px){
  .navtoggle{display:block}
  .mainnav{position:absolute;top:74px;left:0;right:0;background:var(--cream);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);display:none}
  .mainnav.open{display:flex}
  .mainnav a{padding:12px 0;border-bottom:1px solid var(--line)}
  .mainnav a.btn{margin-top:12px;text-align:center;border-bottom:0}
  .section{padding:60px 0}
}