/* ==========================================================================
   Confiance Professionnelle — Design system (charte Teachizy modernisée)
   ========================================================================== */
:root{
  --blue-dark:#13243F; --blue-deep:#0C1A30; --gold:#2563EB; --amber:#5E9BF6;
  --cream:#F3F7FD; --sand:#E7F0FC; --terracotta:#5B7089;
  --text:#3a4a63; --muted:#5a6779; --line:#dce3ee;
  --shadow:0 22px 50px -30px rgba(19,36,63,.35); --radius:22px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;background:var(--cream);color:var(--text);font-family:'Plus Jakarta Sans',system-ui,sans-serif;-webkit-font-smoothing:antialiased;overflow-x:hidden;}
h1,h2,h3,h4,.serif{font-family:'Fraunces',Georgia,serif;color:var(--blue-dark);font-weight:600;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}
::selection{background:var(--gold);color:var(--blue-deep);}
.grain{position:fixed;inset:0;z-index:2;pointer-events:none;mix-blend-mode:multiply;opacity:.045;
  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='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;padding:12px 22px;font-weight:600;font-size:15px;border:1.5px solid transparent;cursor:pointer;transition:transform .25s,box-shadow .25s,background .25s,color .25s;font-family:'Plus Jakarta Sans';}
.btn:hover{transform:translateY(-3px);}
.btn-gold{background:var(--gold);color:var(--blue-deep);box-shadow:0 12px 26px -12px rgba(37,99,235,.7);}
.btn-gold:hover{background:var(--amber);}
.btn-dark{background:var(--blue-dark);color:var(--cream);}
.btn-ghost{background:transparent;border-color:var(--blue-dark);color:var(--blue-dark);}
.btn-ghost:hover{background:var(--blue-dark);color:var(--cream);}
.btn-block{width:100%;justify-content:center;}
.btn-lg{padding:15px 28px;font-size:16px;}

/* nav */
header.nav{position:sticky;top:0;z-index:50;background:rgba(243,247,253,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px;}
.brand{display:flex;align-items:center;gap:11px;font-family:'Fraunces',serif;font-weight:600;font-size:20px;color:var(--blue-dark);}
.brand .mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(140deg,var(--blue-dark),var(--blue-deep));color:var(--cream);display:grid;place-items:center;font-size:17px;box-shadow:inset 0 0 0 1.5px rgba(37,99,235,.5);}
.brand .gold{color:var(--gold);}
.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a.link{font-weight:500;font-size:15px;color:var(--blue-dark);position:relative;padding:4px 0;}
.nav-links a.link::after{content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--gold);transition:width .3s;}
.nav-links a.link:hover::after,.nav-links a.link.active::after{width:100%;}
.burger{display:none;background:none;border:0;color:var(--blue-dark);font-size:26px;cursor:pointer;}

/* hero */
.hero{position:relative;background:radial-gradient(125% 120% at 84% -12%,#1c3357 0%,#13243F 52%,#0C1A30 100%);color:var(--cream);overflow:hidden;}
.hero::before{content:"";position:absolute;width:520px;height:520px;right:-120px;top:-120px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.22),transparent 68%);}
.hero .wrap{position:relative;z-index:3;}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding:76px 0 90px;}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--amber);font-weight:700;margin-bottom:22px;}
.eyebrow::before{content:"";width:26px;height:1.5px;background:var(--gold);}
.hero h1{color:var(--cream);font-size:clamp(2.6rem,5vw,4.15rem);line-height:1.04;letter-spacing:-.01em;margin:0 0 22px;}
.hero h1 em{font-style:italic;color:var(--amber);}
.hero p.lead{font-size:1.18rem;line-height:1.65;color:#d9e0ec;max-width:38ch;margin:0 0 34px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.hero-stats{display:flex;gap:34px;margin-top:44px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14);flex-wrap:wrap;}
.hero-stats .num{font-family:'Fraunces',serif;font-size:1.9rem;color:var(--cream);line-height:1;}
.hero-stats .lbl{font-size:13px;color:#aeb9cb;margin-top:6px;}
.hero-visual{position:relative;min-height:360px;}
.card-float{position:absolute;background:var(--cream);color:var(--text);border-radius:20px;padding:20px;box-shadow:0 30px 60px -30px rgba(0,0,0,.6);width:270px;}
.card-float .cf-top{height:118px;border-radius:12px;margin-bottom:14px;display:flex;align-items:flex-end;padding:12px;color:#fff;font-weight:600;font-size:14px;}
.cf-a{top:0;right:24px;transform:rotate(3deg);z-index:2;}.cf-a .cf-top{background:linear-gradient(135deg,#5B7089,#5E9BF6);}
.cf-b{bottom:6px;left:0;transform:rotate(-4deg);z-index:1;}.cf-b .cf-top{background:linear-gradient(135deg,#13243F,#3b5687);}
.card-float .tag{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--gold);font-weight:700;}
.card-float h4{font-family:'Fraunces',serif;font-size:1.05rem;margin:6px 0 4px;color:var(--blue-dark);}
.card-float .by{font-size:13px;color:var(--muted);}
.card-float .pr{margin-top:12px;font-weight:700;color:var(--blue-dark);font-size:15px;}

/* marquee */
.marquee{background:var(--blue-deep);color:var(--sand);padding:16px 0;overflow:hidden;white-space:nowrap;}
.marquee .track{display:inline-block;animation:slide 26s linear infinite;}
.marquee span{font-family:'Fraunces',serif;font-style:italic;font-size:1.15rem;margin:0 26px;opacity:.86;}
.marquee span b{color:var(--gold);font-style:normal;}
@keyframes slide{from{transform:translateX(0);}to{transform:translateX(-50%);}}

/* sections */
section{padding:96px 0;position:relative;}
section.tight{padding:64px 0;}
.sec-head{max-width:660px;margin-bottom:52px;}
.sec-head .eyebrow{color:var(--gold);}
.sec-head h2{font-size:clamp(2rem,3.6vw,2.9rem);line-height:1.1;margin:0 0 16px;}
.sec-head p{font-size:1.1rem;color:var(--muted);margin:0;}
.bg-sand{background:var(--sand);}

/* course cards */
.courses{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.course{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s;}
.course:hover{transform:translateY(-8px);box-shadow:0 34px 60px -34px rgba(19,36,63,.5);}
.course .cover{height:172px;position:relative;color:#fff;padding:18px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(140deg,#13243F,#33507f);}
.course .cover.g1{background:linear-gradient(140deg,#13243F,#33507f);}
.course .cover.g2{background:linear-gradient(140deg,#1c3357,#5E9BF6);}
.course .cover.g3{background:linear-gradient(140deg,#274b3f,#5f9a7f);}
.course .cover.g4{background:linear-gradient(140deg,#4a2c5e,#9a6fae);}
.badge{align-self:flex-start;background:rgba(255,255,255,.16);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:12px;font-weight:600;padding:5px 12px;border-radius:999px;}
.badge.soon{background:rgba(12,26,48,.5);}
.cover .cat{font-size:12px;letter-spacing:.08em;text-transform:uppercase;opacity:.92;font-weight:600;}
.course .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.course h3{font-size:1.28rem;margin:0;line-height:1.2;}
.course .by{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:14px;}
.avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:12px;font-weight:700;background:linear-gradient(135deg,var(--blue-dark),var(--terracotta));flex:0 0 auto;}
.avatar.lg{width:104px;height:104px;font-size:2rem;font-family:'Fraunces',serif;box-shadow:inset 0 0 0 3px rgba(37,99,235,.55);}
.course .meta{display:flex;gap:16px;color:var(--muted);font-size:13px;margin-top:2px;flex-wrap:wrap;}
.course .foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;}
.price{font-family:'Fraunces',serif;font-weight:600;color:var(--blue-dark);font-size:1.25rem;}
.price small{font-size:12px;color:var(--muted);font-weight:500;font-family:'Plus Jakarta Sans';}
.arrow{width:40px;height:40px;border-radius:50%;background:var(--sand);display:grid;place-items:center;color:var(--blue-dark);transition:.25s;}
.course:hover .arrow{background:var(--gold);transform:rotate(-45deg);}
.soon-note{color:var(--muted);font-size:13px;font-style:italic;}

/* tutors */
.tutors{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.tutor{background:var(--cream);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);text-align:center;}
.tutor .avatar.lg{margin:0 auto 16px;}
.tutor.soon .avatar.lg{background:linear-gradient(140deg,#8a93a3,#b8bfca);}
.tutor h3{font-size:1.3rem;margin:0 0 4px;}
.tutor .role{color:var(--gold);font-weight:600;font-size:14px;margin-bottom:12px;}
.tutor p{color:var(--muted);font-size:14.5px;line-height:1.6;margin:0;}

/* value */
.value{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:center;}
.value-list{display:flex;flex-direction:column;}
.vrow{display:flex;gap:20px;padding:22px 0;border-top:1px solid var(--line);}
.vrow:last-child{border-bottom:1px solid var(--line);}
.vrow .n{font-family:'Fraunces',serif;font-size:1.5rem;color:var(--gold);line-height:1;min-width:44px;}
.vrow h4{margin:0 0 6px;font-size:1.18rem;}
.vrow p{margin:0;color:var(--muted);font-size:15px;line-height:1.6;}
.value-visual{background:radial-gradient(120% 120% at 20% 0%,#1c3357,#0C1A30);border-radius:26px;padding:44px;color:var(--cream);position:relative;overflow:hidden;box-shadow:var(--shadow);}
.value-visual::after{content:"";position:absolute;width:300px;height:300px;border-radius:50%;right:-80px;bottom:-90px;background:radial-gradient(circle,rgba(37,99,235,.25),transparent 70%);}
.value-visual .q{font-family:'Fraunces',serif;font-style:italic;font-size:1.7rem;line-height:1.35;position:relative;z-index:2;}
.value-visual .who{margin-top:22px;position:relative;z-index:2;color:var(--amber);font-weight:600;}
.value-visual .who span{display:block;color:#aeb9cb;font-weight:400;font-size:14px;margin-top:2px;}

/* cta band */
.cta-band{background:linear-gradient(135deg,var(--gold),var(--amber));}
.cta-inner{text-align:center;padding:20px 0;}
.cta-inner h2{color:var(--blue-deep);font-size:clamp(2rem,4vw,3rem);margin:0 0 14px;}
.cta-inner p{color:#5a4a24;font-size:1.15rem;max-width:52ch;margin:0 auto 28px;}

/* page header */
.page-head{background:radial-gradient(120% 130% at 85% -20%,#1c3357,#0C1A30);color:var(--cream);padding:120px 0 56px;}
.page-head .eyebrow{color:var(--amber);}
.page-head h1{color:var(--cream);font-size:clamp(2.2rem,4vw,3.2rem);margin:0 0 12px;}
.page-head p{color:#c7d0dd;font-size:1.1rem;max-width:60ch;margin:0;}
.crumbs{font-size:13px;color:#9fb0c7;margin-bottom:18px;}
.crumbs a:hover{color:var(--gold);}

/* filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px;}
.chip{padding:9px 18px;border-radius:999px;border:1.5px solid var(--line);background:#fff;color:var(--blue-dark);font-size:14px;font-weight:500;transition:.2s;cursor:pointer;}
.chip:hover{border-color:var(--gold);}
.chip.active{background:var(--blue-dark);color:var(--cream);border-color:var(--blue-dark);}
.empty{background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:48px;text-align:center;color:var(--muted);}

/* course detail */
.detail-grid{display:grid;grid-template-columns:1fr 380px;gap:48px;align-items:start;padding:56px 0 96px;}
.detail-main .lead{font-size:1.15rem;line-height:1.7;color:var(--text);}
.curriculum{margin-top:14px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;}
.part{border-bottom:1px solid var(--line);}.part:last-child{border-bottom:0;}
.part-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 22px;background:var(--cream);border:0;cursor:pointer;text-align:left;font-family:'Fraunces',serif;font-size:1.1rem;color:var(--blue-dark);}
.part-head .idx{color:var(--gold);margin-right:10px;}
.part-head .chev{transition:transform .3s;color:var(--muted);}
.part.open .part-head .chev{transform:rotate(90deg);}
.part-body{display:none;padding:6px 22px 14px;}.part.open .part-body{display:block;}
.lesson-row{display:flex;align-items:center;gap:12px;padding:11px 0;border-top:1px solid var(--line);color:var(--text);font-size:15px;}
.lesson-row:first-child{border-top:0;}
.lesson-row .ic{width:26px;height:26px;border-radius:50%;background:var(--sand);display:grid;place-items:center;color:var(--blue-dark);font-size:12px;flex:0 0 auto;}
.lesson-row .free{margin-left:auto;font-size:11px;font-weight:700;color:var(--gold);text-transform:uppercase;letter-spacing:.06em;}
.buy-card{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;}
.buy-card .top{height:150px;background:linear-gradient(140deg,#13243F,#33507f);}
.buy-card .in{padding:26px;}
.buy-price{font-family:'Fraunces',serif;font-size:2.2rem;color:var(--blue-dark);line-height:1;}
.buy-price small{display:block;font-family:'Plus Jakarta Sans';font-size:13px;color:var(--muted);margin-top:6px;}
.buy-list{list-style:none;padding:0;margin:20px 0;}
.buy-list li{display:flex;gap:10px;align-items:flex-start;padding:8px 0;color:var(--text);font-size:14.5px;}
.buy-list li::before{content:"✓";color:var(--gold);font-weight:800;}
.pay-methods{margin-top:16px;display:flex;gap:8px;flex-wrap:wrap;}
.pay-methods span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:5px 10px;}
.tutor-block{display:flex;gap:18px;align-items:center;background:var(--sand);border-radius:var(--radius);padding:22px;margin-top:24px;}
.tutor-block h4{margin:0 0 4px;font-size:1.2rem;}
.tutor-block .role{color:var(--gold);font-weight:600;font-size:14px;}
.tutor-block p{margin:8px 0 0;color:var(--muted);font-size:14.5px;line-height:1.6;}

/* footer */
footer.site{background:var(--blue-deep);color:#aeb9cb;padding:64px 0 30px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
footer.site h5{color:var(--cream);font-family:'Fraunces',serif;font-size:1.05rem;margin:0 0 16px;font-weight:600;}
footer.site a{display:block;padding:6px 0;font-size:14.5px;transition:color .2s;}
footer.site a:hover{color:var(--gold);}
footer.site .brand{color:var(--cream);margin-bottom:14px;}
footer.site .desc{font-size:14.5px;line-height:1.65;max-width:34ch;}
.foot-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;}

/* reveal + loading */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s,transform .7s;}
.reveal.in{opacity:1;transform:none;}
.loading{color:var(--muted);padding:40px 0;text-align:center;}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:10px;padding-bottom:60px;}
  .hero-visual{display:none;}
  .courses,.tutors{grid-template-columns:1fr;}
  .value{grid-template-columns:1fr;gap:36px;}
  .detail-grid{grid-template-columns:1fr;gap:32px;}
  .buy-card{position:static;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .nav-links{display:none;}
  .nav-links.open{display:flex;position:absolute;top:74px;left:0;right:0;flex-direction:column;background:var(--cream);padding:18px 24px;gap:14px;border-bottom:1px solid var(--line);}
  .burger{display:block;}
}