/* btp-paies.fr — feuille de style commune (identité béton / navy / rouge) */
:root{
  --navy:#002A63; --navy-light:#0F3D82; --navy-pale:#E9EEF6;
  --red:#DC1C13; --red-dark:#B4130C;
  --concrete:#F1EEE7; --concrete-dark:#DFDACF; --line:#CBC4B4;
  --charcoal:#2B2F36; --white:#FFFFFF;
  --maxw:1180px; --radius:2px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Source Sans 3',sans-serif;background:var(--concrete);color:var(--charcoal);line-height:1.7;font-size:16.5px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2,h3{font-family:'Montserrat',sans-serif;color:var(--navy);line-height:1.18}
h1{font-size:clamp(28px,3.8vw,44px);font-weight:800;letter-spacing:-.3px}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;letter-spacing:-.2px}
h3{font-size:19px;font-weight:700}
p{margin:0 0 16px}
a{color:var(--navy-light)}
ul{margin:0 0 16px 22px}
li{margin-bottom:6px}
img,svg{max-width:100%}
.muted{color:#6b6f76;font-size:13px}
.mono{font-family:'IBM Plex Mono',monospace}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--red);margin-bottom:12px;display:block}
.btn{display:inline-block;padding:13px 26px;border-radius:var(--radius);font-family:'Montserrat',sans-serif;font-weight:700;text-decoration:none;font-size:14px;border:2px solid transparent;cursor:pointer;transition:background .15s,color .15s}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-dark)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-light)}
.btn-ghost{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-ghost:hover{background:var(--navy);color:#fff}

/* Header */
.site-header{background:var(--white);border-bottom:3px solid var(--navy);position:sticky;top:0;z-index:100}
.header-in{display:flex;align-items:center;gap:22px;height:80px}
.brand{display:flex;align-items:center;text-decoration:none}
.brand img{height:52px;width:auto;display:block}
.main-nav{display:flex;flex-direction:column;gap:2px;margin-left:auto;justify-content:center}
.nav-row{display:flex;gap:16px;flex-wrap:wrap}
.main-nav a{font-size:13.5px;font-weight:600;color:var(--charcoal);text-decoration:none;padding:3px 2px;border-bottom:2px solid transparent;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--navy);border-bottom-color:var(--red)}
.header-cta{display:flex;align-items:center;gap:14px}
.nav-burger{display:none;background:none;border:none;flex-direction:column;gap:5px;padding:6px}
.nav-burger span{display:block;width:26px;height:3px;background:var(--navy)}

/* Widget langues (drapeaux, fixé à droite) */
.lang-switch{position:fixed;right:0;top:40%;z-index:120;display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-right:none;border-radius:4px 0 0 4px;box-shadow:0 4px 16px rgba(0,0,0,.12);overflow:hidden}
.lang-switch a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:7px 8px;text-decoration:none;border-bottom:1px solid var(--line)}
.lang-switch a:last-child{border-bottom:none}
.lang-switch svg{width:26px;height:18px;display:block;border:1px solid rgba(0,0,0,.15)}
.lang-switch span{font-family:'IBM Plex Mono',monospace;font-size:9px;color:var(--charcoal);letter-spacing:.5px}
.lang-switch a:hover{background:var(--navy-pale)}
.lang-switch a.lang-active{background:var(--navy)}
.lang-switch a.lang-active span{color:#fff}

/* Fil d'Ariane */
.breadcrumb{font-family:'IBM Plex Mono',monospace;font-size:12px;padding:14px 0;color:#6b6f76}
.breadcrumb a{color:var(--navy-light);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}

/* Hero */
.hero{background:var(--navy);color:#fff;padding:64px 0 56px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:340px;height:340px;background:repeating-linear-gradient(45deg,rgba(255,255,255,.05) 0 12px,transparent 12px 24px);transform:rotate(8deg)}
.hero h1,.hero h2{color:#fff}
.hero .eyebrow{color:#FFD34D}
.hero p{max-width:760px;font-size:18px;color:#DCE4F2}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.hero-tags span{font-family:'IBM Plex Mono',monospace;font-size:12px;border:1px solid rgba(255,255,255,.35);padding:5px 12px;border-radius:var(--radius);color:#DCE4F2}

/* Sections */
.section{padding:60px 0}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-navy{background:var(--navy);color:#fff}
.section-navy h2,.section-navy h3{color:#fff}
.section-navy p{color:#DCE4F2}
.sec-head{max-width:820px;margin-bottom:36px}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--white);border:1px solid var(--line);border-top:4px solid var(--navy);border-radius:var(--radius);padding:26px}
.card h3{margin-bottom:10px}
.card .fig{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--red);letter-spacing:1px;display:block;margin-bottom:12px}
.card p{font-size:15px;margin-bottom:12px}
.card .more{font-weight:600;font-size:14px;text-decoration:none}
.card .more::after{content:" →"}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:34px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);padding:18px;border-radius:var(--radius)}
.stat b{font-family:'Montserrat',sans-serif;font-size:30px;color:#FFD34D;display:block;line-height:1}
.stat span{font-size:13px;color:#DCE4F2}
.chips{display:flex;gap:9px;flex-wrap:wrap;margin:14px 0}
.chips span{background:var(--navy-pale);border:1px solid var(--line);color:var(--navy);font-size:13px;font-weight:600;padding:6px 13px;border-radius:var(--radius)}
.answer-box{background:var(--navy-pale);border-left:5px solid var(--navy);padding:20px 24px;border-radius:var(--radius);margin:24px 0}
.answer-box p{margin:0;font-size:15.5px}
.answer-box .mono{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--red);display:block;margin-bottom:8px}
.check-list{list-style:none;margin-left:0}
.check-list li{padding-left:30px;position:relative;margin-bottom:10px}
.check-list li::before{content:"✓";position:absolute;left:0;top:0;font-weight:800;color:var(--red)}
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:var(--white);border:1px solid var(--line);padding:22px;border-radius:var(--radius)}
.step::before{counter-increment:step;content:"0" counter(step);font-family:'Montserrat',sans-serif;font-size:26px;font-weight:800;color:var(--concrete-dark);display:block;line-height:1;margin-bottom:8px}
.step h3{font-size:19px;color:var(--navy)}
.step p{font-size:14px;margin:0;color:var(--charcoal)}
.section-navy .step h3{color:var(--navy)}
.section-navy .step p{color:var(--charcoal)}
.step a{font-weight:700}

/* Tarifs */
.price-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.price{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;display:flex;flex-direction:column}
.price .plan{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:1.5px;color:var(--red);text-transform:uppercase}
.price h3{font-size:20px;margin:6px 0 2px}
.price .who{font-size:13px;color:#6b6f76;margin-bottom:14px}
.price .from{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--charcoal);margin:0 0 2px}
.price .amount{margin-bottom:18px}
.price .btn{margin-top:auto;text-align:center}
.price .amount{font-family:'Montserrat',sans-serif;font-size:30px;font-weight:800;color:var(--navy);line-height:1}
.price .amount small{font-size:14px;font-family:'Inter',sans-serif;font-weight:500;color:#6b6f76}
.price ul{list-style:none;margin:16px 0 20px;flex:1}
.price li{font-size:13.5px;padding-left:20px;position:relative;margin-bottom:8px}
.price li::before{content:"✓";position:absolute;left:0;color:var(--red);font-weight:800}
.price .btn{text-align:center}

/* FAQ */
.faq-item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px}
.faq-item summary{cursor:pointer;padding:18px 22px;font-weight:700;color:var(--navy);font-size:16.5px;list-style:none;position:relative;padding-right:46px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:14px;font-size:24px;color:var(--red);font-weight:400}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-a{padding:0 22px 20px;font-size:15px}

/* Articles */
.article-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column}
.article-card .cat{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--red);letter-spacing:1px;text-transform:uppercase;margin-bottom:10px}
.article-card h3{font-size:20px;margin-bottom:10px}
.article-card h3 a{color:var(--navy);text-decoration:none}
.article-card h3 a:hover{text-decoration:underline}
.article-card p{font-size:14.5px;flex:1}
.article-card .src{font-size:12px;color:#6b6f76}
.article-body{max-width:820px}
.article-body h2{font-size:28px;margin:34px 0 14px;text-transform:none}
.article-body h3{margin:26px 0 10px}
.article-meta{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:#6b6f76;margin-bottom:26px}

/* Formulaire */
.contact-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:40px}
.contact-info .ci{margin-bottom:22px}
.contact-info .ci b{font-family:'Montserrat',sans-serif;font-size:15px;color:var(--navy);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:4px}
form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
label{font-weight:600;font-size:14px;display:block;margin:14px 0 6px;color:var(--navy)}
input,select,textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius);font-family:'Inter',sans-serif;font-size:15px;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid var(--navy-light);outline-offset:1px}
.checks{display:flex;gap:18px;flex-wrap:wrap;margin-top:8px}
.checks label{display:flex;align-items:center;gap:7px;font-weight:500;margin:0}
.checks input{width:auto}
.form-msg{display:none;padding:16px 20px;border-radius:var(--radius);margin-top:18px;font-size:15px}
.form-msg.ok{display:block;background:#E8F5E9;border:1px solid #66BB6A;color:#1B5E20}
.form-msg.ko{display:block;background:#FDECEA;border:1px solid #EF9A9A;color:#B71C1C}
.form-note{font-size:12.5px;color:#6b6f76;margin-top:14px}
.honeypot{position:absolute;left:-9999px;opacity:0;height:0;overflow:hidden}

/* Juridique */
.legal-body{max-width:820px}
.legal-body h2{font-size:24px;margin:32px 0 12px;text-transform:none}
.legal-body h3{font-size:19px;margin:22px 0 8px}
.legal-body p,.legal-body li{font-size:15px}
.legal-body table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;background:#fff}
.legal-body th,.legal-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.legal-body th{background:var(--navy-pale);color:var(--navy)}

/* CTA bandeau */
.cta-band{background:var(--red);color:#fff;padding:44px 0}
.cta-band h2{color:#fff;margin-bottom:8px}
.cta-band p{color:#FFE3E1;max-width:700px}
.cta-band .btn{background:#fff;color:var(--red-dark)}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}

/* Footer */
.site-footer{background:#02102F;color:#C9CDD3;padding:52px 0 0;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:38px}
.foot-brand{margin-bottom:14px}
.foot-brand img{max-height:260px;max-width:100%;width:auto;height:auto;display:block}
.site-footer h4{font-family:'Montserrat',sans-serif;color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:1.2px;margin-bottom:12px}
.site-footer ul{list-style:none;margin:0}
.site-footer a{color:#C9CDD3;text-decoration:none;font-size:14px}
.site-footer a:hover{color:#fff;text-decoration:underline}
.site-footer p{font-size:14px}
.foot-legal{border-top:1px solid #1b2c55;padding-top:18px;padding-bottom:18px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.foot-legal p{font-size:12.5px;margin:0}

/* Barre mobile */
.mobile-bar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:110;background:var(--navy);grid-template-columns:1fr 1fr}
.mobile-bar a{padding:15px;text-align:center;color:#fff;font-weight:700;text-decoration:none}
.mobile-bar .mb-red{background:var(--red)}

@media(max-width:1024px){
  .g4,.price-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .g3{grid-template-columns:repeat(2,1fr)}
  .main-nav{display:none;position:absolute;top:80px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;border-bottom:3px solid var(--navy);gap:4px}
  .main-nav.open{display:flex}
  .nav-row{flex-direction:column;gap:0}
  .main-nav a{padding:11px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-burger{display:flex}
}
@media(max-width:720px){
  .brand img{height:40px!important}
  .foot-brand img{max-height:170px}
  .g2,.g3,.g4,.price-grid,.contact-grid,form .row{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .header-cta .btn{display:none}
  .mobile-bar{display:grid}
  body{padding-bottom:52px}
  .lang-switch svg{width:22px;height:15px}
  .lang-switch a{padding:6px 6px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}