/* =========================================================
   L'Horizon du Digital 3 — Masterclass IA · LYNUS
   Thème sombre · vert #12AA00 + jaune #FFD600 · DM Sans
   ========================================================= */

:root{
  --bg:#050a05;
  --card:#0c150c;
  --card-2:#0e1a0e;
  --green:#12AA00;
  --green-bright:#2ee06a;
  --green-dim:#0d7a00;
  --yellow:#FFD600;
  --text:#e8f5e9;
  --text-dim:rgba(232,245,233,.58);
  --text-dim2:rgba(232,245,233,.38);
  --line:rgba(18,170,0,.16);
  --mono:'JetBrains Mono', ui-monospace, monospace;
  --sans:'DM Sans', system-ui, -apple-system, sans-serif;
  --max:1160px;
  --nav-h:66px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 12px);}
body{
  font-family:var(--sans);background:var(--bg);color:var(--text);line-height:1.6;
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(18,170,0,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18,170,0,.04) 1px, transparent 1px);
  background-size:64px 64px;
}
::selection{background:var(--green);color:#04240a;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:var(--max);margin:0 auto;padding:0 24px;}
.muted{color:var(--text-dim2);font-size:.85em;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--sans);
  font-weight:700;font-size:15px;padding:12px 22px;border-radius:10px;border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s, color .18s;white-space:nowrap;}
.btn-primary{background:var(--green);color:#04240a;box-shadow:0 6px 22px rgba(18,170,0,.26);}
.btn-primary:hover{background:var(--green-bright);transform:translateY(-2px);box-shadow:0 10px 30px rgba(18,170,0,.4);}
.btn-outline{background:transparent;color:var(--text);border-color:rgba(232,245,233,.28);}
.btn-outline:hover{border-color:var(--green);color:var(--green-bright);transform:translateY(-2px);}
.btn-ghost{background:rgba(255,255,255,.04);color:var(--text);border-color:var(--line);}
.btn-ghost:hover{color:var(--text);border-color:rgba(232,245,233,.28);}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px;}
.btn-lg{padding:14px 28px;font-size:16px;}
.btn-block{width:100%;}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- countdown bar ---------- */
.countdown{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap;
  background:linear-gradient(90deg, rgba(18,170,0,.15), rgba(255,214,0,.07));
  border-bottom:1px solid var(--line);padding:8px 16px;font-size:13px;text-align:center;}
.cd-label{color:var(--text-dim);font-weight:500;letter-spacing:.01em;}
.cd-grid{display:flex;align-items:center;gap:8px;font-family:var(--mono);}
.cd-unit{display:flex;flex-direction:column;align-items:center;line-height:1;min-width:30px;}
.cd-num{font-size:16px;font-weight:700;color:var(--green-bright);}
.cd-u{font-size:9px;color:var(--text-dim2);text-transform:uppercase;letter-spacing:.08em;margin-top:2px;}
.cd-sep{color:var(--green-dim);font-weight:700;align-self:flex-start;margin-top:1px;}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:100;transition:background .3s, backdrop-filter .3s, border-color .3s;
  border-bottom:1px solid transparent;}
.nav.scrolled{background:rgba(5,10,5,.85);backdrop-filter:blur(14px);border-bottom-color:var(--line);}
.nav-inner{max-width:var(--max);margin:0 auto;height:var(--nav-h);display:flex;align-items:center;
  justify-content:space-between;padding:0 24px;gap:20px;}
.brand{display:flex;align-items:center;flex-shrink:0;}
.brand-logo{height:38px;width:auto;}
.nav-links{display:flex;gap:26px;margin-left:auto;}
.nav-links a{font-size:14.5px;color:var(--text-dim);font-weight:500;transition:color .2s;}
.nav-links a:hover{color:var(--text);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;
  background:none;border:1px solid var(--line);border-radius:9px;cursor:pointer;padding:0 9px;}
.nav-burger span{display:block;height:2px;background:var(--text);border-radius:2px;transition:.25s;}
.nav.open .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav.open .nav-burger span:nth-child(2){opacity:0;}
.nav.open .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- hero ---------- */
.hero{position:relative;min-height:calc(100vh - var(--nav-h) - 40px);display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;padding:64px 24px 90px;overflow:hidden;}
.hero-bg{position:absolute;inset:0;pointer-events:none;z-index:0;}
.hero-photo{position:absolute;inset:0;background-image:url('assets/hero-HDD2.webp');background-size:cover;
  background-position:center 30%;filter:grayscale(.0) brightness(.55);}
.hero-scrim{position:absolute;inset:0;
  background:radial-gradient(ellipse at 50% 28%, rgba(5,10,5,.48) 0%, rgba(5,10,5,.78) 55%, rgba(5,10,5,.95) 100%);}
.glow{position:absolute;border-radius:50%;filter:blur(70px);}
.glow-g{width:620px;height:620px;background:radial-gradient(circle, rgba(18,170,0,.22) 0%, transparent 70%);top:-170px;left:50%;transform:translateX(-58%);}
.glow-y{width:400px;height:400px;background:radial-gradient(circle, rgba(255,214,0,.09) 0%, transparent 70%);bottom:-120px;right:6%;}
.hero-inner{position:relative;z-index:2;max-width:880px;}
.eyebrow{font-family:var(--mono);font-size:12.5px;letter-spacing:.24em;color:var(--green-bright);
  text-transform:uppercase;margin-bottom:20px;}
.hero-title{font-size:clamp(2.9rem,9vw,6.2rem);font-weight:800;line-height:.98;letter-spacing:-.02em;}
.hero-title .ed{display:inline-block;color:var(--bg);background:var(--green);border-radius:16px;
  padding:0 .16em;margin-left:.06em;box-shadow:0 0 44px rgba(18,170,0,.5);}
.hero-theme{margin-top:22px;}
.theme-tag{font-family:var(--mono);font-size:clamp(12px,1.5vw,14.5px);letter-spacing:.06em;color:var(--text-dim);
  border:1px solid var(--line);border-radius:100px;padding:8px 18px;display:inline-block;}
.theme-tag b{color:var(--yellow);}
.hero-sub{font-size:clamp(1rem,1.5vw,1.2rem);color:var(--text-dim);max-width:650px;margin:24px auto 0;}
.hero-tags{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin-top:28px;}
.tag{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--text);background:rgba(18,170,0,.09);
  border:1px solid var(--line);padding:7px 14px;border-radius:100px;text-transform:uppercase;}
.hero-meta{display:flex;align-items:center;justify-content:center;gap:22px;flex-wrap:wrap;margin-top:32px;}
.meta-item{display:flex;flex-direction:column;gap:2px;}
.meta-item .ml{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;color:var(--text-dim2);text-transform:uppercase;}
.meta-item .mv{font-size:16px;font-weight:700;}
.meta-sep{width:1px;height:32px;background:var(--line);}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:36px;}
.scroll-hint{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);z-index:2;
  color:var(--text-dim);font-size:22px;animation:bob 1.8s infinite;}
@keyframes bob{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,8px);}}

/* ---------- sections ---------- */
.section{padding:96px 0;position:relative;}
.section-alt{background:linear-gradient(180deg, var(--bg) 0%, #070d07 100%);border-block:1px solid var(--line);}
.sec-head{max-width:640px;margin-bottom:52px;}
.sec-head.center{margin-inline:auto;text-align:center;}
.sec-head h2{font-size:clamp(2rem,4.6vw,3.2rem);font-weight:800;line-height:1.06;letter-spacing:-.02em;margin-top:14px;}
.lead{color:var(--text-dim);font-size:clamp(1rem,1.3vw,1.13rem);margin-top:18px;}

/* ---------- la masterclass : intro générale + édition + triptyque ---------- */
.mc-intro{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.mc-intro-head h2{font-size:clamp(1.9rem,4vw,2.6rem);font-weight:800;letter-spacing:-.02em;
  line-height:1.08;margin-top:14px;}
.mc-general{color:var(--text-dim);font-size:15.5px;line-height:1.7;}
.mc-divider{height:1px;background:var(--line);margin:32px 0;}
.mc-edition{margin-bottom:44px;}
.mc-edition-label{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--green-bright);display:block;margin-bottom:10px;}
.mc-edition-text{color:var(--text);font-size:16px;line-height:1.65;font-weight:500;}
.mc-video{position:relative;margin-top:44px;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#000;}
.mc-video-el{width:100%;max-height:560px;display:block;object-fit:cover;}
.mc-sound-btn{position:absolute;top:16px;right:16px;z-index:3;display:inline-flex;align-items:center;gap:8px;
  font-family:var(--sans);font-weight:700;font-size:13.5px;color:#04240a;background:var(--green);
  border:none;border-radius:100px;padding:9px 16px;cursor:pointer;box-shadow:0 6px 20px rgba(18,170,0,.4);
  transition:transform .18s ease, background .18s ease, opacity .18s ease;}
.mc-sound-btn:hover{background:var(--green-bright);transform:translateY(-2px);}
.mc-sound-btn svg{width:16px;height:16px;flex-shrink:0;}
.mc-sound-btn.is-hidden{opacity:0;pointer-events:none;}

.chapters{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:18px;overflow:hidden;}
.chapter{position:relative;overflow:hidden;min-height:300px;padding:38px 28px 30px;
  display:flex;flex-direction:column;justify-content:flex-end;background-size:cover;background-position:center;
  transition:transform .4s ease;}
.chapter:hover{transform:scale(1.02);}
.chapter::before{content:'';position:absolute;inset:0;z-index:1;
  background:linear-gradient(to top, rgba(5,10,5,.95) 0%, rgba(5,10,5,.8) 32%, rgba(5,10,5,.35) 65%, rgba(5,10,5,.05) 100%);}
.chapter-1{background-image:url('assets/chapter-ia.webp');}
.chapter-2{background-image:url('assets/chapter-workflow.webp');}
.chapter-3{background-image:url('assets/chapter-atelier.webp');}
.chapter-ghost{position:absolute;top:-18px;right:8px;z-index:2;font-family:var(--mono);font-weight:800;
  font-size:6.5rem;line-height:1;color:transparent;-webkit-text-stroke:1.5px rgba(255,255,255,.28);
  pointer-events:none;transition:-webkit-text-stroke-color .3s;}
.chapter:hover .chapter-ghost{-webkit-text-stroke-color:rgba(255,255,255,.45);}
.chapter-kicker{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--green-bright);margin-bottom:10px;position:relative;z-index:2;}
.chapter h3{font-size:1.4rem;font-weight:800;margin-bottom:10px;position:relative;z-index:2;letter-spacing:-.01em;color:#fff;}
.chapter p{color:rgba(232,245,233,.75);font-size:14px;line-height:1.55;position:relative;z-index:2;}

/* ---------- pourquoi (éditorial) ---------- */
.why-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:start;}
.why-intro{position:sticky;top:calc(var(--nav-h) + 30px);}
.why-intro h2{font-size:clamp(2.1rem,4.4vw,3.2rem);font-weight:800;line-height:1.04;letter-spacing:-.02em;margin-top:14px;}
.why-intro .hl{color:var(--green);}
.why-intro .btn{margin-top:26px;}
.why-list{list-style:none;counter-reset:none;}
.why-item{display:grid;grid-template-columns:76px 1fr;gap:20px;padding:26px 0;border-top:1px solid var(--line);align-items:baseline;}
.why-item:last-child{border-bottom:1px solid var(--line);}
.why-idx{font-family:var(--mono);font-size:1.7rem;font-weight:700;color:var(--green);opacity:.5;
  transition:opacity .3s, transform .3s;}
.why-item:hover .why-idx{opacity:1;transform:translateY(-2px);}
.why-body h3{font-size:1.3rem;font-weight:700;margin-bottom:7px;}
.why-body p{color:var(--text-dim);font-size:15px;max-width:520px;}

/* ---------- programme : timeline alternée (gauche/droite) ---------- */
.timeline{position:relative;margin-top:8px;}
.tl-list{list-style:none;display:flex;flex-direction:column;gap:40px;}
.tl-item{position:relative;display:grid;grid-template-columns:1fr;gap:8px;}
.timeline::before{content:'';position:absolute;left:15px;top:0;bottom:0;width:1px;background:rgba(232,245,233,.14);}
.timeline::after{content:'';position:absolute;left:15px;top:0;width:1px;height:96px;
  background:linear-gradient(to bottom, transparent, var(--green), transparent);}
.tl-dot{position:absolute;left:11px;top:6px;width:10px;height:10px;border-radius:50%;background:var(--green);
  box-shadow:0 0 0 4px var(--bg), 0 0 10px rgba(18,170,0,.5);}
.tl-content{padding-left:38px;}
.tl-time{font-family:var(--mono);font-size:13.5px;font-weight:700;color:var(--green-bright);margin-bottom:4px;}
.tl-content h3{font-size:1.15rem;font-weight:800;line-height:1.25;letter-spacing:-.01em;}
.tl-sub{color:var(--text-dim);font-size:14px;margin-top:5px;}
.tl-content ul{margin:9px 0 0;padding-left:16px;}
.tl-content li{color:var(--text-dim);font-size:13px;margin-bottom:3px;line-height:1.5;}

.tl-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:48px;font-size:14px;color:var(--text-dim);}
.tl-meta-item{display:inline-flex;align-items:center;gap:8px;}
.tl-meta-item svg{width:16px;height:16px;color:var(--green);flex-shrink:0;}

@media (min-width:921px){
  .timeline::before,.timeline::after{left:50%;transform:translateX(-1px);}
  .tl-dot{left:50%;transform:translateX(-50%);}
  .tl-item{grid-template-columns:1fr 1fr;gap:48px;align-items:start;}
  .tl-content{padding-left:0;}
  .tl-item:nth-child(odd) .tl-content{grid-column:1;padding-right:48px;text-align:right;}
  .tl-item:nth-child(odd) .tl-content ul{margin-left:auto;max-width:380px;}
  .tl-item:nth-child(even) .tl-content{grid-column:2;padding-left:48px;}
  .tl-item:nth-child(even) .tl-content ul{max-width:380px;}
}

/* ---------- badge ---------- */
.badge-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;max-width:960px;margin:0 auto;}
.badge-form{display:flex;flex-direction:column;gap:14px;}
.upload{display:block;border:1.5px dashed rgba(18,170,0,.35);border-radius:14px;padding:34px 20px;text-align:center;
  cursor:pointer;transition:border-color .25s, background .25s;background:rgba(18,170,0,.03);}
.upload:hover,.upload.drag{border-color:var(--green);background:rgba(18,170,0,.07);}
.upload-inner{display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--text-dim);}
.upload-inner svg{width:30px;height:30px;color:var(--green);}
.up-title{font-weight:600;color:var(--text);font-size:15px;}
.upload-inner small{font-size:12px;color:var(--text-dim2);}
.field{width:100%;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:13px 16px;
  color:var(--text);font-family:var(--sans);font-size:15px;transition:border-color .2s;}
.field::placeholder{color:var(--text-dim2);}
.field:focus{outline:none;border-color:var(--green);}
.field.pulse-hint{animation:fieldPulse 1.6s ease-in-out infinite;}
@keyframes fieldPulse{
  0%,100%{border-color:var(--line);box-shadow:0 0 0 0 rgba(18,170,0,.35);}
  50%{border-color:var(--green);box-shadow:0 0 0 5px rgba(18,170,0,0);}
}
.badge-note{font-size:12.5px;color:var(--text-dim2);text-align:center;}
.badge-preview{display:flex;justify-content:center;}
#badgeCanvas{width:100%;max-width:360px;height:auto;border-radius:16px;border:1px solid var(--line);
  box-shadow:0 20px 60px rgba(0,0,0,.5);}

/* ---------- galerie ---------- */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:16px;}
.gallery:empty{display:none;}
.gal-item{position:relative;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--card);}
.gal-item img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block;}
.gal-name{padding:8px 10px;font-size:13px;font-weight:600;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.gallery-empty{text-align:center;color:var(--text-dim2);font-size:15px;padding:44px 20px;
  border:1px dashed var(--line);border-radius:14px;}

/* ---------- à propos ---------- */
.about-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.vision{margin-top:26px;border-left:2px solid var(--green);padding:6px 0 6px 20px;}
.vision-k{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--green-bright);margin-bottom:6px;}
.vision p{color:var(--text);font-size:16px;font-weight:500;}
.values{display:flex;flex-wrap:wrap;gap:10px;}
.value{font-size:14px;font-weight:600;background:var(--card);border:1px solid var(--line);border-radius:100px;padding:10px 18px;}
.value:nth-child(odd){border-color:rgba(255,214,0,.22);}
.brand-quote{margin-top:26px;font-family:var(--mono);font-size:1.05rem;line-height:1.6;color:var(--green-bright);
  font-style:italic;border-top:1px solid var(--line);padding-top:22px;}

/* ---------- final cta ---------- */
.final-cta{position:relative;text-align:center;padding:100px 24px;overflow:hidden;border-top:1px solid var(--line);}
.final-cta .container{position:relative;z-index:2;}
.final-cta .glow-g{width:560px;height:400px;top:-80px;left:50%;transform:translateX(-50%);filter:blur(80px);}
.final-cta h2{font-size:clamp(2rem,5vw,3.4rem);font-weight:800;letter-spacing:-.02em;}
.final-cta p{color:var(--text-dim);font-size:1.1rem;margin:16px auto 30px;max-width:560px;}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--line);padding:48px 0 0;background:#070d07;}
.footer-inner{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;padding-bottom:34px;}
.footer-logo{height:40px;width:auto;margin-bottom:12px;}
.footer-brand p{color:var(--text-dim);font-size:14px;}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:var(--text-dim);font-size:14.5px;transition:color .2s;}
.footer-links a:hover{color:var(--green-bright);}
.footer-bottom{border-top:1px solid var(--line);padding:20px 24px;text-align:center;font-size:12.5px;
  color:var(--text-dim2);font-family:var(--mono);letter-spacing:.04em;}

/* ---------- modal ---------- */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px;}
.modal[hidden]{display:none;}
.modal-overlay{position:absolute;inset:0;background:rgba(3,6,3,.78);backdrop-filter:blur(4px);}
.modal-box{position:relative;z-index:2;background:var(--card-2);border:1px solid var(--line);border-radius:18px;
  padding:32px 30px;max-width:440px;width:100%;text-align:center;box-shadow:0 30px 80px rgba(0,0,0,.6);
  animation:pop .25s cubic-bezier(.2,.9,.3,1.2);}
@keyframes pop{from{transform:scale(.9);opacity:0;}to{transform:scale(1);opacity:1;}}
.modal-box h3{font-size:1.4rem;font-weight:700;margin-bottom:10px;}
.modal-box p{color:var(--text-dim);font-size:14.5px;margin-bottom:24px;}
.modal-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1);}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:920px){
  .nav-links{display:none;}
  .nav-burger{display:flex;}
  .nav.open .nav-links{display:flex;position:absolute;top:var(--nav-h);left:0;right:0;flex-direction:column;
    gap:4px;background:rgba(5,10,5,.97);backdrop-filter:blur(14px);padding:12px 24px 18px;border-bottom:1px solid var(--line);margin:0;}
  .nav.open .nav-links a{padding:10px 0;font-size:16px;}
  .why-wrap{grid-template-columns:1fr;gap:32px;}
  .why-intro{position:static;}
  .about-wrap{grid-template-columns:1fr;gap:32px;}
  .mc-intro{grid-template-columns:1fr;gap:20px;}
  .chapters{grid-template-columns:1fr;}
  .badge-wrap{grid-template-columns:1fr;gap:30px;max-width:420px;}
  .badge-preview{order:-1;}
}
@media (max-width:600px){
  .section{padding:66px 0;}
  .cd-label{display:none;}
  .countdown{gap:0;}
  .nav-actions .js-luma{display:none;}
  .nav-inner{padding-left:12px;}
  .footer .container{padding-left:12px;}
  .meta-sep{display:none;}
  .hero-meta{gap:14px;}
  .hero-cta .btn{width:100%;}
  .tl-time{font-size:12.5px;}
  .why-item{grid-template-columns:52px 1fr;gap:14px;}
  .footer-inner{flex-direction:column;gap:24px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
}