:root{
  --green:#8cc63f;
  --green-dark:#4f8f18;
  --black:#111827;
  --muted:#64748b;
  --white:#ffffff;
  --cream:#f7f4ec;
  --gold:#c99a2e;
  --shadow:0 24px 70px rgba(17,24,39,.14);
  --radius:28px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--black);background:linear-gradient(180deg,#fff 0%,#f8fafc 45%,#eef7e4 100%);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,92%);margin:auto}

/* Loading premium */
.page-loader{position:fixed;inset:0;z-index:3000;display:grid;place-items:center;background:linear-gradient(135deg,#ffffff 0%,#eef7e4 55%,#f7f4ec 100%);transition:opacity .45s ease,visibility .45s ease}
.page-loader.hide{opacity:0;visibility:hidden;pointer-events:none}
.loader-card{width:min(86%,330px);background:rgba(255,255,255,.86);border:1px solid rgba(15,23,42,.08);border-radius:30px;padding:32px;text-align:center;box-shadow:0 28px 80px rgba(15,23,42,.16);backdrop-filter:blur(12px)}
.loader-book{width:76px;height:76px;margin:0 auto 18px;border-radius:22px;background:linear-gradient(135deg,var(--green),var(--green-dark));color:white;display:grid;place-items:center;font-weight:950;font-size:1.35rem;box-shadow:0 18px 35px rgba(79,143,24,.28);animation:pulseBook 1.25s ease-in-out infinite}
.loader-line{height:8px;border-radius:99px;background:linear-gradient(90deg,rgba(140,198,63,.15),var(--green),rgba(140,198,63,.15));background-size:220% 100%;animation:loaderMove 1.1s linear infinite;margin-bottom:14px}
.loader-card p{font-weight:900;color:#38640e}
@keyframes pulseBook{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-8px) scale(1.04)}}
@keyframes loaderMove{0%{background-position:0% 50%}100%{background-position:220% 50%}}

/* Popup accueil */
body.modal-open{overflow:hidden}
.welcome-popup{position:fixed;inset:0;z-index:2500;display:grid;place-items:center;padding:24px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s ease,visibility .3s ease}
.welcome-popup.show{opacity:1;visibility:visible;pointer-events:auto}
.popup-overlay{position:absolute;inset:0;background:rgba(7,12,24,.62);backdrop-filter:blur(8px)}
.popup-card{position:relative;width:min(960px,96vw);background:rgba(255,255,255,.98);border:1px solid rgba(255,255,255,.7);border-radius:34px;box-shadow:0 35px 100px rgba(0,0,0,.35);overflow:hidden;transform:translateY(18px) scale(.96);transition:transform .34s ease}
.welcome-popup.show .popup-card{transform:translateY(0) scale(1)}
.popup-close{position:absolute;top:16px;right:16px;z-index:3;width:44px;height:44px;border:0;border-radius:50%;background:#111827;color:white;font-size:1.8rem;line-height:1;cursor:pointer;box-shadow:0 12px 28px rgba(15,23,42,.22)}
.popup-close:hover{background:var(--green-dark)}
.popup-grid{display:grid;grid-template-columns:.8fr 1.2fr;align-items:center}
.popup-cover{height:100%;min-height:430px;background:linear-gradient(135deg,#edf8df,#fff);display:grid;place-items:center;padding:28px}
.popup-cover img{max-height:390px;width:auto;border-radius:22px;box-shadow:0 24px 54px rgba(15,23,42,.24);border:7px solid white}
.popup-content{padding:46px 42px 42px}
.popup-badge{display:inline-flex;margin-bottom:16px;padding:8px 14px;border-radius:999px;background:#edf8df;color:#38640e;font-weight:950;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}
.popup-content h2{font-size:clamp(1.75rem,3.2vw,3rem);line-height:1.06;letter-spacing:-1.2px;margin-bottom:16px;color:#111827}
.popup-content p{color:#475569;font-size:1.06rem;margin-bottom:24px}
.popup-actions{display:flex;gap:12px;flex-wrap:wrap}


header{position:sticky;top:0;z-index:1000;backdrop-filter:blur(18px);background:rgba(255,255,255,.84);border-bottom:1px solid rgba(15,23,42,.08);box-shadow:0 12px 35px rgba(15,23,42,.05)}
.nav{height:86px;display:flex;justify-content:space-between;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.5px;color:#1f2937;line-height:1.1;position:relative;z-index:1002}.brand-mark{width:48px;height:48px;border-radius:18px;background:linear-gradient(135deg,var(--green),var(--green-dark));display:grid;place-items:center;color:white;font-weight:900;box-shadow:0 10px 25px rgba(140,198,63,.35)}
.menu{display:flex;align-items:center;gap:8px;font-weight:800;color:#334155;font-size:.95rem;background:rgba(255,255,255,.72);border:1px solid rgba(15,23,42,.08);border-radius:999px;padding:8px 10px;box-shadow:0 12px 35px rgba(15,23,42,.06)}
.menu>a{padding:11px 15px;border-radius:999px;transition:.25s}.menu>a:hover,.menu>a.active{background:#edf8df;color:var(--green-dark)}
.menu-socials{display:flex;gap:8px;margin-left:4px;padding-left:10px;border-left:1px solid rgba(15,23,42,.1)}
.social-icon{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;border:1px solid rgba(15,23,42,.12);background:white;font-weight:950;color:#1f2937;transition:.25s;font-size:1rem}.social-icon:hover{transform:translateY(-3px);background:var(--green);color:white;border-color:var(--green)}.facebook{font-family:Arial,sans-serif;font-size:1.25rem}.tiktok{font-size:1.1rem}.twitter{font-size:.95rem}
.menu-toggle{display:none;width:48px;height:48px;border:0;border-radius:16px;background:linear-gradient(135deg,var(--green),var(--green-dark));box-shadow:0 12px 28px rgba(79,143,24,.28);cursor:pointer;position:relative;z-index:1002;place-items:center;padding:12px}.menu-toggle span{display:block;width:24px;height:3px;background:#fff;border-radius:99px;margin:3px 0;transition:.25s}.menu-toggle.open span:nth-child(1){transform:translateY(9px) rotate(45deg)}.menu-toggle.open span:nth-child(2){opacity:0}.menu-toggle.open span:nth-child(3){transform:translateY(-9px) rotate(-45deg)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 22px;border-radius:999px;font-weight:900;border:none;cursor:pointer;transition:.25s;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,var(--green),var(--green-dark));color:white;box-shadow:0 16px 35px rgba(79,143,24,.28)}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 22px 48px rgba(79,143,24,.34)}.btn-outline{border:1px solid rgba(15,23,42,.14);background:white;color:#1f2937}.btn-outline:hover{border-color:var(--green);color:var(--green-dark);transform:translateY(-3px)}

.hero{position:relative;overflow:hidden;padding:96px 0 82px;min-height:calc(100vh - 86px);display:flex;align-items:center;background-image:url('assets/auteur-robe.jpg');background-position:center;background-size:cover;background-repeat:no-repeat}.hero::before{content:"";position:absolute;inset:0;background:rgba(255,255,255,.88);z-index:0}.hero::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 10%,rgba(140,198,63,.22),transparent 35%),radial-gradient(circle at 0% 100%,rgba(201,154,46,.16),transparent 38%),linear-gradient(90deg,rgba(255,255,255,.96) 0%,rgba(255,255,255,.82) 52%,rgba(255,255,255,.72) 100%);z-index:0}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}.hero-copy{background:rgba(255,255,255,.58);border:1px solid rgba(255,255,255,.7);box-shadow:0 22px 60px rgba(15,23,42,.08);backdrop-filter:blur(6px);border-radius:34px;padding:34px}
.badge{display:inline-flex;align-items:center;gap:10px;padding:8px 14px;border-radius:999px;background:#edf8df;color:#38640e;font-weight:900;font-size:.87rem;margin-bottom:24px}.dot{width:9px;height:9px;border-radius:50%;background:var(--green-dark)}
h1{font-size:clamp(2.25rem,5vw,4.85rem);line-height:1.02;letter-spacing:-2.5px;margin-bottom:24px}.green-text{color:var(--green-dark)}.lead{font-size:1.16rem;color:#475569;max-width:680px;margin-bottom:30px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;max-width:680px}.stat{background:white;border:1px solid rgba(15,23,42,.08);padding:18px;border-radius:22px;box-shadow:0 10px 35px rgba(15,23,42,.06)}.stat strong{font-size:1.45rem;color:var(--green-dark);display:block;line-height:1}.stat span{font-size:.86rem;color:#64748b;font-weight:700}
.book-showcase{position:relative;transform:translateY(-34px)}.book-card{background:linear-gradient(145deg,#ffffff,#f4f8ef);border:1px solid rgba(15,23,42,.08);border-radius:36px;padding:24px;box-shadow:var(--shadow);transform:rotate(1deg)}.cover-wrap{border-radius:28px;overflow:hidden;box-shadow:0 30px 60px rgba(15,23,42,.22);border:8px solid white}.price-tag{position:absolute;right:-10px;bottom:38px;background:#111827;color:white;border-radius:22px;padding:18px 22px;box-shadow:0 20px 40px rgba(15,23,42,.28);transform:rotate(-4deg)}.price-tag small{display:block;color:#d1d5db;font-weight:800}.price-tag strong{font-size:2rem;color:#fff}

section{padding:82px 0}.section-title{max-width:760px;margin-bottom:40px}.section-title .eyebrow{color:var(--green-dark);font-weight:950;text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;margin-bottom:10px}.section-title h2{font-size:clamp(2rem,3.7vw,3.4rem);line-height:1.08;letter-spacing:-1.2px;margin-bottom:16px}.section-title p{color:#64748b;font-size:1.08rem}.summary-card{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;background:white;border-radius:var(--radius);border:1px solid rgba(15,23,42,.08);overflow:hidden;box-shadow:var(--shadow)}.summary-media{min-height:470px;background:url('assets/couverture-livre.jpeg') center/cover no-repeat;position:relative}.summary-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(17,24,39,.5))}.summary-content{padding:44px}.summary-content h3{font-size:2rem;line-height:1.15;margin-bottom:18px;color:#1f2937}.summary-content p{color:#475569;font-size:1.05rem;margin-bottom:16px}.highlight{margin-top:22px;padding:22px;border-radius:22px;background:linear-gradient(135deg,#edf8df,#fff);border-left:6px solid var(--green);font-weight:800;color:#334155}.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.feature{background:white;border-radius:24px;padding:28px;border:1px solid rgba(15,23,42,.08);box-shadow:0 18px 50px rgba(15,23,42,.07)}.feature-icon{width:52px;height:52px;border-radius:18px;background:#edf8df;color:var(--green-dark);display:grid;place-items:center;font-size:1.4rem;margin-bottom:18px}.feature h3{font-size:1.25rem;margin-bottom:10px}.feature p{color:#64748b}
.author{background:#111827;color:white;position:relative;overflow:hidden}.author::before{content:"";position:absolute;right:-160px;top:-160px;width:440px;height:440px;border-radius:50%;background:radial-gradient(circle,rgba(140,198,63,.3),transparent 70%)}.author-grid{position:relative;z-index:1;display:grid;grid-template-columns:.85fr 1.15fr;gap:46px;align-items:center}.author-photo-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.author-photo-grid img{height:260px;width:100%;object-fit:cover;border-radius:26px;border:1px solid rgba(255,255,255,.12)}.author-photo-grid img:first-child{grid-column:span 2;height:380px}.author h2{font-size:clamp(2rem,4vw,3.6rem);line-height:1.08;margin-bottom:18px}.author p{color:#d1d5db;font-size:1.05rem;margin-bottom:16px}.author .name{color:#bef264;font-weight:950}.light-title{margin-bottom:20px}.purchase{background:linear-gradient(135deg,#f7f4ec,#eef7e4)}.purchase-box{display:grid;grid-template-columns:1fr .75fr;gap:36px;align-items:center;background:white;border-radius:34px;padding:42px;border:1px solid rgba(15,23,42,.08);box-shadow:var(--shadow)}.purchase h2{font-size:clamp(2rem,4vw,3.6rem);line-height:1.08;margin-bottom:16px}.purchase p{color:#64748b;font-size:1.08rem;margin-bottom:22px}.purchase-title{margin-bottom:20px}.info-list{display:grid;gap:12px;margin:24px 0}.info-item{display:flex;gap:12px;align-items:center;font-weight:800;color:#334155}.check{min-width:30px;width:30px;height:30px;border-radius:50%;background:#edf8df;color:var(--green-dark);display:grid;place-items:center;font-weight:950}.purchase-cover{border-radius:26px;overflow:hidden;box-shadow:0 26px 50px rgba(15,23,42,.2);border:8px solid #f8fafc}footer{background:#0b1220;color:#94a3b8;padding:44px 0}.footer-grid{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.footer-grid strong{color:white}.footer-socials{display:flex;gap:12px;flex-wrap:wrap}.footer-socials a{color:white;border:1px solid rgba(255,255,255,.18);padding:10px 14px;border-radius:999px;font-weight:800}.footer-socials a:hover{background:var(--green);border-color:var(--green)}

@media(max-width:1080px){.menu{gap:4px;font-size:.88rem}.menu>a{padding:10px 12px}.brand span:last-child{font-size:.9rem}.hero-grid{gap:32px}}
@media(max-width:920px){
  .book-showcase{transform:translateY(-18px)}
  .container{width:min(94%,720px)}
  .menu-toggle{display:grid}
  .menu{position:fixed;left:50%;top:96px;transform:translateX(-50%) translateY(-12px);width:min(92%,420px);display:grid;grid-template-columns:1fr;gap:8px;border-radius:26px;padding:18px;background:rgba(255,255,255,.96);box-shadow:0 24px 70px rgba(15,23,42,.18);opacity:0;visibility:hidden;pointer-events:none;transition:.25s;z-index:1001}.menu.open{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.menu>a{text-align:center;padding:14px 16px;background:#f8fafc}.menu-socials{margin:6px 0 0;padding:12px 0 0;border-left:0;border-top:1px solid rgba(15,23,42,.1);justify-content:center}.hero{padding:72px 0 58px;min-height:auto;background-position:center top}.hero::before{background:rgba(255,255,255,.91)}.hero-grid,.summary-card,.author-grid,.purchase-box{grid-template-columns:1fr}.hero-copy{padding:26px}.stats,.features{grid-template-columns:1fr}.summary-media{min-height:360px}.author-photo-grid img:first-child{height:310px}.price-tag{right:10px;bottom:20px}.book-card{transform:none}.purchase-box{padding:28px}.section-title h2{letter-spacing:-.8px}}
@media(max-width:560px){
  .book-showcase{transform:translateY(-10px)}
  .nav{height:76px}.brand-mark{width:42px;height:42px;border-radius:14px}.brand span:last-child{font-size:.82rem}.menu{top:86px}.hero{padding:52px 0 46px;background-position:center top}.hero::before{background:rgba(255,255,255,.93)}.hero-copy{padding:20px;border-radius:24px}h1{font-size:2.25rem;letter-spacing:-1.2px}.lead{font-size:1rem}.hero-actions{display:grid;grid-template-columns:1fr;margin-bottom:22px}.btn{width:100%;padding:13px 18px}.stat{padding:15px}.section-title{margin-bottom:26px}.summary-content{padding:26px}.summary-content h3{font-size:1.55rem}.author-photo-grid{grid-template-columns:1fr}.author-photo-grid img,.author-photo-grid img:first-child{grid-column:auto;height:280px}.purchase-box{padding:20px;border-radius:24px}.info-item{align-items:flex-start}.price-tag{position:relative;right:auto;bottom:auto;margin:14px auto 0;width:max-content;transform:none}.footer-grid{display:grid;text-align:center;justify-content:center}.footer-socials{justify-content:center}}

@media(max-width:760px){
  .welcome-popup{padding:14px}
  .popup-card{border-radius:26px;max-height:92vh;overflow:auto}
  .popup-grid{grid-template-columns:1fr}
  .popup-cover{min-height:auto;padding:24px 20px 10px}
  .popup-cover img{max-height:280px}
  .popup-content{padding:22px 22px 28px;text-align:center}
  .popup-actions{display:grid;grid-template-columns:1fr}
  .popup-close{top:10px;right:10px;width:40px;height:40px;font-size:1.5rem}
}