/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:20px 0;transition:.4s;
}
.site-header.is-scrolled{
  background:rgba(10,26,60,.92);backdrop-filter:blur(14px);
  padding:12px 0;box-shadow:0 4px 30px rgba(0,0,0,.15);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;}
.site-logo img{height:46px;width:auto;}
.site-logo-badge{
  display:inline-flex;align-items:center;background:#fff;border-radius:12px;padding:6px 12px;
  box-shadow:0 4px 18px rgba(0,0,0,.18);
}
.site-logo-badge img{height:40px;width:auto;display:block;}
.site-logo{font-family:var(--font-heading);font-size:26px;color:#fff;font-weight:700;letter-spacing:.03em;}
.main-nav ul{display:flex;gap:34px;align-items:center;}
.main-nav a{color:#fff;font-size:15px;font-weight:500;letter-spacing:.02em;position:relative;padding:6px 0;}
.main-nav a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--spark-gold);transition:.3s;}
.main-nav a:hover::after,.main-nav a.current::after{width:100%;}
.header-cta{display:flex;align-items:center;gap:18px;}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:26px;}
@media(max-width:960px){
  .main-nav{position:fixed;top:0;right:-100%;width:78%;max-width:340px;height:100vh;background:var(--spark-navy-dark);padding:100px 32px;transition:.4s;}
  .main-nav.is-open{right:0;}
  .main-nav ul{flex-direction:column;align-items:flex-start;gap:22px;}
  .nav-toggle{display:block;}
  .header-cta .btn-outline{display:none;}
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;min-height:100vh;display:flex;align-items:center;
  background:linear-gradient(160deg,rgba(25,26,56,.68),rgba(43,44,92,.55),rgba(156,63,116,.55)),var(--hero-bg,url('../images/paris-night.jpg')) center/cover fixed;
  color:#fff;overflow:hidden;
}
.hero-particles{position:absolute;inset:0;pointer-events:none;z-index:1;}
.hero-content{position:relative;z-index:2;text-align:center;max-width:920px;margin:0 auto;padding-top:80px;}
.hero-eyebrow{
  display:inline-block;padding:8px 20px;border-radius:100px;
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;
  border:1px solid rgba(255,255,255,.35);color:var(--spark-gold-light);margin-bottom:28px;
}
.hero-title{
  font-size:clamp(44px,8vw,88px);color:#fff;line-height:1.05;margin-bottom:10px;
  text-shadow:0 4px 30px rgba(0,0,0,.3);
}
.hero-title .gold{color:var(--spark-gold);}
.hero-tagline{font-size:clamp(18px,2.4vw,24px);font-weight:300;color:#e9edf7;margin-bottom:8px;}
.hero-dates{font-size:16px;color:var(--spark-gold-light);letter-spacing:.04em;margin-bottom:30px;}
.hero-subtitle{font-size:15px;color:#c7cee0;letter-spacing:.04em;margin-bottom:44px;}
.hero-actions{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;}
.hero-scroll{position:absolute;bottom:34px;left:50%;transform:translateX(-50%);z-index:2;color:#fff;opacity:.7;animation:bounce 2.2s infinite;}
@keyframes bounce{0%,100%{transform:translate(-50%,0);}50%{transform:translate(-50%,10px);}}

/* ==========================================================================
   COUNTDOWN
   ========================================================================== */
.countdown-section{background:var(--spark-navy);padding:64px 0;position:relative;overflow:hidden;}
.countdown-section::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 50% 0%,rgba(201,162,75,.14),transparent 60%);}
.countdown-title{color:#fff;text-align:center;margin-bottom:36px;font-size:20px;letter-spacing:.08em;text-transform:uppercase;font-family:var(--font-body);font-weight:600;}
.countdown-title .gold{color:var(--spark-gold);}
.countdown-grid{display:flex;justify-content:center;gap:24px;flex-wrap:wrap;position:relative;z-index:2;}
.countdown-unit{
  width:140px;text-align:center;background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:var(--radius);padding:28px 10px;backdrop-filter:blur(10px);
}
.countdown-number{
  font-family:var(--font-heading);font-size:52px;color:var(--spark-gold);font-weight:700;
  transition:transform .3s;
}
.countdown-number.flip{animation:flipnum .5s ease;}
@keyframes flipnum{0%{transform:rotateX(90deg);opacity:0;}100%{transform:rotateX(0);opacity:1;}}
.countdown-label{color:#c7cee0;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-top:8px;}
.countdown-open{display:none;text-align:center;color:#fff;font-size:22px;font-weight:600;padding:20px;}
@media(max-width:640px){.countdown-unit{width:76px;padding:16px 4px;}.countdown-number{font-size:30px;}.countdown-label{font-size:10px;}}

/* ==========================================================================
   ABOUT / POURQUOI PARTICIPER
   ========================================================================== */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;}
.about-media{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-strong);}
.about-media img{transition:.6s;}
.about-media:hover img{transform:scale(1.05);}
.method-steps{display:flex;gap:24px;margin-top:40px;flex-wrap:wrap;}
.method-step{flex:1;min-width:160px;}
.method-step .num{
  width:44px;height:44px;border-radius:50%;background:var(--spark-navy);color:var(--spark-gold);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:700;margin-bottom:14px;
}
@media(max-width:860px){.about-grid{grid-template-columns:1fr;}}

.why-card{position:relative;overflow:hidden;}
.why-card .icon{
  width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,var(--spark-navy),var(--spark-royal));
  display:flex;align-items:center;justify-content:center;color:var(--spark-gold);font-size:24px;margin-bottom:20px;
}

/* ==========================================================================
   SEMINAIRES
   ========================================================================== */
.seminars-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;}
.seminar-card{
  position:relative;border-radius:var(--radius);overflow:hidden;color:#fff;min-height:460px;
  display:flex;flex-direction:column;justify-content:flex-end;padding:44px;
  box-shadow:var(--shadow-strong);
}
.seminar-card::before{content:'';position:absolute;inset:0;background:var(--seminar-bg) center/cover;z-index:0;}
.seminar-card::after{content:'';position:absolute;inset:0;background:linear-gradient(165deg,rgba(43,44,92,.35),rgba(25,26,56,.94));z-index:1;}
.seminar-card>*{position:relative;z-index:2;}
.seminar-badge{display:inline-block;padding:6px 16px;border-radius:100px;background:var(--spark-gold);color:var(--spark-navy-dark);font-size:12px;font-weight:700;letter-spacing:.06em;margin-bottom:16px;width:fit-content;}
.seminar-card h3{color:#fff;font-size:28px;margin-bottom:6px;}
.seminar-dates{color:var(--spark-gold-light);font-weight:600;margin-bottom:16px;}
.seminar-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px;}
.seminar-tags span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:5px 12px;border-radius:100px;font-size:12px;}
@media(max-width:860px){.seminars-grid{grid-template-columns:1fr;}}

/* ==========================================================================
   TIMELINE PARCOURS
   ========================================================================== */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:0;}
.timeline::before{content:'';position:absolute;left:50%;top:0;bottom:0;width:2px;background:linear-gradient(var(--spark-gold),var(--spark-royal));transform:translateX(-50%);}
.timeline-item{position:relative;width:50%;padding:0 50px 60px;}
.timeline-item:nth-child(odd){left:0;text-align:right;}
.timeline-item:nth-child(even){left:50%;text-align:left;}
.timeline-dot{position:absolute;top:4px;width:18px;height:18px;border-radius:50%;background:var(--spark-gold);border:4px solid var(--spark-navy);}
.timeline-item:nth-child(odd) .timeline-dot{right:-9px;}
.timeline-item:nth-child(even) .timeline-dot{left:-9px;}
.timeline-item h4{color:var(--spark-navy);margin-bottom:6px;}
@media(max-width:760px){
  .timeline::before{left:20px;}
  .timeline-item,.timeline-item:nth-child(odd),.timeline-item:nth-child(even){width:100%;left:0;text-align:left;padding-left:50px;}
  .timeline-item:nth-child(odd) .timeline-dot,.timeline-item:nth-child(even) .timeline-dot{left:11px;}
}

/* ==========================================================================
   FORMATEUR
   ========================================================================== */
.formateur-section{background:var(--spark-gray);}
.formateur-grid{display:grid;grid-template-columns:340px 1fr;gap:56px;align-items:center;}
.formateur-photo{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-strong);border:6px solid #fff;}
.formateur-name{font-size:30px;margin-bottom:4px;}
.formateur-title{color:var(--spark-gold);font-weight:600;letter-spacing:.03em;margin-bottom:20px;}
.formateur-social{display:flex;gap:12px;margin-top:24px;}
.formateur-social a{width:42px;height:42px;border-radius:50%;background:var(--spark-navy);color:#fff;display:flex;align-items:center;justify-content:center;transition:.3s;}
.formateur-social a:hover{background:var(--spark-gold);color:var(--spark-navy-dark);}
@media(max-width:800px){.formateur-grid{grid-template-columns:1fr;}.formateur-photo{max-width:280px;margin:0 auto;}}
.formateur-linkedin{display:inline-block;margin-top:18px;font-weight:600;color:var(--spark-navy);text-decoration:underline;text-underline-offset:3px;}
.formateur-linkedin:hover{color:var(--spark-gold);}

.formateur-team-intro{margin-top:64px;margin-bottom:28px;text-align:center;}
.formateur-team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.formateur-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-soft);transition:.35s;}
.formateur-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-strong);}
.formateur-card-photo{aspect-ratio:4/3;overflow:hidden;}
.formateur-card-photo img{width:100%;height:100%;object-fit:cover;display:block;}
.formateur-card-body{padding:24px;}
.formateur-card-name{font-size:19px;margin-bottom:4px;}
.formateur-card-title{color:var(--spark-gold);font-weight:600;font-size:13px;letter-spacing:.02em;margin-bottom:12px;}
.formateur-card-bio{font-size:14px;color:var(--spark-text-light,#5a5f75);line-height:1.6;}
.formateur-card-linkedin{display:inline-block;margin-top:14px;font-size:13px;font-weight:600;color:var(--spark-navy);text-decoration:underline;text-underline-offset:3px;}
.formateur-card-linkedin:hover{color:var(--spark-gold);}
@media(max-width:900px){.formateur-team-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){.formateur-team-grid{grid-template-columns:1fr;}}

/* ==========================================================================
   PUBLIC CONCERNE
   ========================================================================== */
.public-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.public-item{
  background:#fff;border-radius:var(--radius);padding:28px 20px;text-align:center;
  border:1px solid rgba(10,26,60,.07);transition:.35s;
}
.public-item:hover{background:var(--spark-navy);color:#fff;transform:translateY(-6px);}
.public-item .icon{font-size:30px;margin-bottom:14px;color:var(--spark-gold);}
@media(max-width:760px){.public-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:480px){.public-grid{grid-template-columns:1fr;}}

/* ==========================================================================
   PROGRAMME (tableaux modernes)
   ========================================================================== */
.program-day{
  display:grid;grid-template-columns:120px 1fr;gap:24px;padding:28px 0;border-bottom:1px solid rgba(10,26,60,.08);
}
.program-day:last-child{border-bottom:0;}
.program-day .day-badge{
  width:90px;height:90px;border-radius:50%;background:linear-gradient(135deg,var(--spark-navy),var(--spark-royal));
  color:var(--spark-gold);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:700;font-size:20px;
}
.program-day h4{margin-bottom:8px;}
@media(max-width:600px){.program-day{grid-template-columns:70px 1fr;}.program-day .day-badge{width:60px;height:60px;font-size:14px;}}

.deliverables-box{background:var(--spark-navy);color:#fff;border-radius:var(--radius);padding:32px 36px;margin-top:44px;}
.deliverables-box h4{color:var(--spark-gold);}
.deliverables-list{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px;}
.deliverables-list span{background:rgba(255,255,255,.1);padding:8px 16px;border-radius:100px;font-size:14px;}

/* ==========================================================================
   FORMULAIRE MULTI-ETAPES
   ========================================================================== */
.spark-form-wrap{max-width:880px;margin:0 auto;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-strong);overflow:hidden;}
.form-progress{display:flex;background:var(--spark-gray);padding:0;}
.form-progress-step{flex:1;text-align:center;padding:18px 8px;font-size:13px;font-weight:600;color:var(--spark-gray-dark);position:relative;border-bottom:3px solid transparent;}
.form-progress-step.active{color:var(--spark-navy);border-color:var(--spark-gold);}
.form-progress-step.done{color:var(--spark-royal);}
.form-body{padding:48px;}
@media(max-width:600px){.form-body{padding:26px 20px;}.form-progress-step{font-size:10px;padding:12px 4px;}}
.form-step{display:none;}
.form-step.active{display:block;animation:fadeUp .5s;}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:translateY(0);}}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:20px;}
.form-row.single{grid-template-columns:1fr;}
@media(max-width:600px){.form-row{grid-template-columns:1fr;}}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--spark-navy);}
.field label .req{color:#c0392b;}
.field input[type=text],.field input[type=email],.field input[type=tel],.field input[type=number],
.field select,.field textarea,.field input[type=date]{
  width:100%;padding:14px 16px;border:1.5px solid #e0e4ec;border-radius:10px;font-size:15px;
  font-family:inherit;transition:.25s;background:#fbfbfe;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--spark-gold);outline:0;box-shadow:0 0 0 4px rgba(201,162,75,.15);}
.field.error input,.field.error select,.field.error textarea{border-color:#c0392b;}
.field-error-msg{color:#c0392b;font-size:13px;margin-top:6px;display:none;}
.field.error .field-error-msg{display:block;}
.checkbox-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
@media(max-width:600px){.checkbox-grid{grid-template-columns:1fr;}}
.check-option{
  display:flex;align-items:flex-start;gap:10px;border:1.5px solid #e0e4ec;border-radius:10px;padding:14px 16px;
  cursor:pointer;transition:.2s;
}
.check-option:hover{border-color:var(--spark-gold-light);}
.check-option input{margin-top:3px;}
.seminar-choice{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
@media(max-width:760px){.seminar-choice{grid-template-columns:1fr;}}
.seminar-choice label{
  border:2px solid #e0e4ec;border-radius:var(--radius);padding:24px 18px;cursor:pointer;transition:.25s;display:block;
}
.seminar-choice input{display:none;}
.seminar-choice input:checked + .choice-card{border-color:transparent;}
.seminar-choice label:has(input:checked){border-color:var(--spark-gold);background:linear-gradient(135deg,rgba(201,162,75,.08),rgba(26,63,168,.05));}
.choice-title{font-weight:700;color:var(--spark-navy);margin-bottom:6px;}
.choice-dates{color:var(--spark-gold);font-size:13px;font-weight:600;margin-bottom:8px;}
.choice-desc{font-size:13px;color:var(--spark-gray-dark);}
.file-upload{border:2px dashed #d6dae4;border-radius:10px;padding:22px;text-align:center;cursor:pointer;background:#fbfbfe;transition:.25s;}
.file-upload:hover{border-color:var(--spark-gold);}
.file-upload input{display:none;}
.file-upload .fname{font-size:13px;color:var(--spark-royal);margin-top:8px;}
.form-nav{display:flex;justify-content:space-between;margin-top:36px;}
.consent-box{background:var(--spark-gray);border-radius:10px;padding:20px;margin:24px 0;font-size:14px;color:var(--spark-gray-dark);}
.form-success{display:none;text-align:center;padding:60px 20px;}
.form-success .icon{font-size:60px;color:#2e9e5b;margin-bottom:20px;}
.honeypot{position:absolute;left:-9999px;opacity:0;height:0;}

/* ==========================================================================
   GALLERY / FAQ / CONTACT / FOOTER
   ========================================================================== */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.gallery-item{position:relative;border-radius:12px;overflow:hidden;cursor:pointer;aspect-ratio:1/1;}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:.5s;}
.gallery-item:hover img{transform:scale(1.12);}
.gallery-item::after{content:'\002B';position:absolute;inset:0;background:rgba(10,26,60,.55);color:#fff;font-size:34px;display:flex;align-items:center;justify-content:center;opacity:0;transition:.35s;}
.gallery-item:hover::after{opacity:1;}
@media(max-width:760px){.gallery-grid{grid-template-columns:repeat(2,1fr);}}
.lightbox-overlay{position:fixed;inset:0;background:rgba(5,13,33,.94);z-index:9999;display:none;align-items:center;justify-content:center;padding:40px;}
.lightbox-overlay.open{display:flex;}
.lightbox-overlay img{max-width:90vw;max-height:85vh;border-radius:8px;}
.lightbox-close{position:absolute;top:24px;right:30px;color:#fff;font-size:34px;cursor:pointer;}

.faq-item{border-bottom:1px solid rgba(10,26,60,.1);}
.faq-question{display:flex;justify-content:space-between;align-items:center;padding:24px 0;cursor:pointer;font-weight:600;font-size:17px;color:var(--spark-navy);}
.faq-question .plus{font-size:22px;color:var(--spark-gold);transition:.3s;}
.faq-item.open .plus{transform:rotate(45deg);}
.faq-answer{max-height:0;overflow:hidden;transition:.4s;color:var(--spark-gray-dark);}
.faq-item.open .faq-answer{max-height:500px;padding-bottom:24px;}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;}
.contact-info-item{display:flex;gap:16px;margin-bottom:24px;}
.contact-info-item .icon{width:46px;height:46px;border-radius:12px;background:var(--spark-navy);color:var(--spark-gold);display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.map-frame{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-soft);height:100%;min-height:300px;}
@media(max-width:860px){.contact-grid{grid-template-columns:1fr;}}

.site-footer{background:var(--spark-navy-dark);color:#c7cee0;padding:80px 0 30px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:44px;margin-bottom:50px;}
.footer-logo{height:44px;margin-bottom:18px;}
.footer-col h5{color:#fff;font-size:15px;letter-spacing:.05em;text-transform:uppercase;margin-bottom:20px;}
.footer-col ul li{margin-bottom:12px;}
.footer-col a:hover{color:var(--spark-gold);}
.footer-newsletter input{width:100%;padding:12px 14px;border-radius:8px;border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.06);color:#fff;margin-bottom:10px;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;}
.footer-social a:hover{background:var(--spark-gold);color:var(--spark-navy-dark);}
@media(max-width:860px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr;}}

/* ==========================================================================
   BLOG / ACTUALITES
   ========================================================================== */
.post-card{border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow-soft);transition:.35s;}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-strong);}
.post-card img{aspect-ratio:16/10;object-fit:cover;}
.post-card-body{padding:26px;}
.post-meta{font-size:12px;color:var(--spark-gold);text-transform:uppercase;letter-spacing:.06em;margin-bottom:10px;}
.post-card h3{font-size:19px;margin-bottom:10px;}

/* Page hero interne (pages séminaires) */
.page-hero{
  background:linear-gradient(160deg,rgba(25,26,56,.82),rgba(43,44,92,.75),rgba(156,63,116,.7)),var(--page-bg,url('../images/paris-night.jpg')) center/cover;
  color:#fff;padding:200px 0 90px;text-align:center;
}
.page-hero .section-label{color:var(--spark-gold-light);}
.page-hero h1{color:#fff;font-size:clamp(34px,5vw,54px);}
.page-hero p{color:#c7cee0;max-width:640px;margin:0 auto;font-size:17px;}
.breadcrumb{font-size:13px;color:#a9b2c8;margin-top:10px;}
.breadcrumb a{color:var(--spark-gold-light);}