/* Seven France Énergie - CSS */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI',Arial,sans-serif;background:#f0fdfa;color:#0f172a;line-height:1.7}

/* COLORS */
:root{
  --navy:#0f172a;
  --teal:#0d9488;
  --teal-dark:#0f766e;
  --light:#f0fdfa;
  --white:#fff;
  --gray:#64748b;
  --border:#e2e8f0;
}

/* HEADER */
header{background:var(--navy);position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,0.3)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:72px}
.logo img{height:52px;width:auto;display:block}
nav ul{list-style:none;display:flex;gap:8px}
nav ul li a{color:#cbd5e1;text-decoration:none;padding:8px 16px;border-radius:6px;font-size:0.95rem;font-weight:500;transition:all 0.2s}
nav ul li a:hover,nav ul li a.active{background:var(--teal);color:#fff}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:8px}
.hamburger span{display:block;width:25px;height:2px;background:#fff;border-radius:2px;transition:all 0.3s}

/* VIDEO HERO */
.hero-video{position:relative;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:var(--navy)}
.hero-video video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-video-overlay{position:absolute;inset:0;background:rgba(15,23,42,0.88);z-index:1}
.hero-video-content{position:relative;z-index:2;text-align:center;padding:40px 24px;max-width:800px;color:#fff}
.hero-video-content h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;margin-bottom:20px;line-height:1.15}
.hero-video-content p{font-size:1.2rem;color:#94a3b8;margin-bottom:32px}
.hero-badge{display:inline-block;background:var(--teal);color:#fff;font-size:0.85rem;font-weight:700;padding:6px 16px;border-radius:20px;margin-bottom:16px;letter-spacing:1px;text-transform:uppercase}

/* STANDARD HERO (non-video) */
.hero-static{position:relative;min-height:90vh;display:flex;align-items:center;justify-content:center;background-size:cover;background-position:center}
.hero-static-overlay{position:absolute;inset:0;background:rgba(15,23,42,0.88)}
.hero-static-content{position:relative;z-index:2;text-align:center;padding:40px 24px;max-width:800px;color:#fff}
.hero-static-content h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;margin-bottom:20px;line-height:1.2}
.hero-static-content p{font-size:1.15rem;color:#94a3b8;margin-bottom:32px}

/* BUTTONS */
.btn{display:inline-block;padding:14px 32px;border-radius:8px;font-weight:700;font-size:1rem;text-decoration:none;transition:all 0.2s;cursor:pointer;border:none}
.btn-primary{background:var(--teal);color:#fff}
.btn-primary:hover{background:var(--teal-dark);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:2px solid #fff}
.btn-outline:hover{background:#fff;color:var(--navy)}
.btn-group{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* SECTIONS */
section{padding:80px 24px}
.container{max-width:1200px;margin:0 auto}
.section-title{text-align:center;margin-bottom:56px}
.section-title h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;color:var(--navy);margin-bottom:12px}
.section-title p{font-size:1.1rem;color:var(--gray);max-width:600px;margin:0 auto}
.section-teal{background:var(--teal);color:#fff}
.section-navy{background:var(--navy);color:#fff}
.section-light{background:var(--light)}
.section-white{background:#fff}

/* 2-COL GRID */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.two-col img{width:100%;border-radius:12px;box-shadow:0 8px 32px rgba(0,0,0,0.12)}
.two-col-text h2{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--navy);margin-bottom:16px;line-height:1.25}
.two-col-text p{color:var(--gray);margin-bottom:16px;font-size:1.05rem}
.two-col-text ul{color:var(--gray);padding-left:20px;margin-bottom:20px}
.two-col-text ul li{margin-bottom:8px}
.two-col.reverse{direction:rtl}.two-col.reverse>*{direction:ltr}

/* SERVICES GRID */
.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:28px}
.service-card{background:#fff;border-radius:12px;padding:36px 28px;box-shadow:0 2px 16px rgba(0,0,0,0.07);border-top:4px solid var(--teal);transition:transform 0.2s,box-shadow 0.2s}
.service-card:hover{transform:translateY(-4px);box-shadow:0 8px 32px rgba(13,148,136,0.15)}
.service-icon{width:56px;height:56px;background:var(--teal);border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.6rem;color:#fff}
.service-card h3{font-size:1.2rem;font-weight:700;color:var(--navy);margin-bottom:10px}
.service-card p{color:var(--gray);font-size:0.95rem}

/* BANNER CSS BG */
.banner-section{position:relative;padding:100px 24px;background-size:cover;background-position:center;background-attachment:fixed}
.banner-overlay{position:absolute;inset:0;background:rgba(15,23,42,0.88)}
.banner-content{position:relative;z-index:2;text-align:center;color:#fff;max-width:700px;margin:0 auto}
.banner-content h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:16px}
.banner-content p{font-size:1.1rem;color:#94a3b8;margin-bottom:28px}

/* STATS */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;text-align:center}
.stat-item h3{font-size:3rem;font-weight:900;color:var(--teal);line-height:1}
.stat-item p{color:#94a3b8;margin-top:8px;font-size:1rem}

/* BLOG GRID */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}
.blog-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 2px 16px rgba(0,0,0,0.07);transition:transform 0.2s}
.blog-card:hover{transform:translateY(-4px)}
.blog-card img{width:100%;height:200px;object-fit:cover}
.blog-card-body{padding:24px}
.blog-card-body .tag{display:inline-block;background:var(--teal);color:#fff;font-size:0.75rem;font-weight:700;padding:3px 10px;border-radius:20px;margin-bottom:12px;text-transform:uppercase;letter-spacing:0.5px}
.blog-card-body h3{font-size:1.15rem;font-weight:700;color:var(--navy);margin-bottom:8px;line-height:1.3}
.blog-card-body p{color:var(--gray);font-size:0.9rem;margin-bottom:16px}
.blog-card-body a{color:var(--teal);font-weight:600;text-decoration:none;font-size:0.9rem}
.blog-card-body a:hover{text-decoration:underline}

/* ARTICLE */
.article-hero{position:relative;height:420px;background-size:cover;background-position:center;display:flex;align-items:flex-end}
.article-hero-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,23,42,0.9),rgba(15,23,42,0.3))}
.article-hero-content{position:relative;z-index:2;padding:40px;color:#fff;max-width:800px}
.article-hero-content h1{font-size:clamp(1.6rem,4vw,2.5rem);font-weight:800;line-height:1.2;margin-bottom:12px}
.article-meta{color:#94a3b8;font-size:0.9rem}
.article-body{max-width:800px;margin:0 auto;padding:60px 24px}
.article-body h2{font-size:1.6rem;font-weight:800;color:var(--navy);margin:40px 0 16px}
.article-body h3{font-size:1.25rem;font-weight:700;color:var(--navy);margin:28px 0 12px}
.article-body p{color:#334155;margin-bottom:20px;font-size:1.05rem;line-height:1.8}
.article-body ul,article-body ol{color:#334155;padding-left:24px;margin-bottom:20px}
.article-body li{margin-bottom:8px;line-height:1.7}
.article-body img{width:100%;border-radius:12px;margin:28px 0;box-shadow:0 4px 20px rgba(0,0,0,0.1)}
.article-body a{color:var(--teal);font-weight:600;text-decoration:none}
.article-body a:hover{text-decoration:underline}
.article-body blockquote{border-left:4px solid var(--teal);padding:16px 24px;background:#f0fdfa;border-radius:0 8px 8px 0;margin:28px 0;font-style:italic;color:#334155}

/* CONTACT FORM */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-form{background:#fff;border-radius:16px;padding:48px;box-shadow:0 4px 24px rgba(0,0,0,0.08)}
.form-group{margin-bottom:24px}
.form-group label{display:block;font-weight:600;color:var(--navy);margin-bottom:8px;font-size:0.95rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:8px;font-size:1rem;font-family:inherit;transition:border-color 0.2s;background:#fff;color:var(--navy)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--teal)}
.form-group textarea{resize:vertical;min-height:140px}
.contact-info h3{font-size:1.4rem;font-weight:700;color:var(--navy);margin-bottom:20px}
.contact-info p{color:var(--gray);margin-bottom:16px;font-size:1rem}
.info-item{display:flex;align-items:flex-start;gap:16px;margin-bottom:20px}
.info-icon{width:44px;height:44px;background:var(--teal);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0;color:#fff}
.info-text strong{display:block;color:var(--navy);font-weight:600;margin-bottom:2px}
.info-text span{color:var(--gray);font-size:0.95rem}

/* BREADCRUMB */
.breadcrumb{background:#fff;border-bottom:1px solid var(--border);padding:14px 24px}
.breadcrumb-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:8px;font-size:0.9rem}
.breadcrumb-inner a{color:var(--teal);text-decoration:none}
.breadcrumb-inner span{color:var(--gray)}

/* PAGE HERO */
.page-hero{background:var(--navy);padding:80px 24px 60px;text-align:center;color:#fff}
.page-hero h1{font-size:clamp(1.8rem,4vw,3rem);font-weight:800;margin-bottom:16px}
.page-hero p{font-size:1.1rem;color:#94a3b8;max-width:600px;margin:0 auto}

/* SITEMAP */
.sitemap-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px}
.sitemap-col h3{font-size:1.1rem;font-weight:700;color:var(--navy);margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid var(--teal)}
.sitemap-col ul{list-style:none}
.sitemap-col ul li{margin-bottom:8px}
.sitemap-col ul li a{color:var(--gray);text-decoration:none;font-size:0.95rem;transition:color 0.2s}
.sitemap-col ul li a:hover{color:var(--teal)}

/* 404 */
.error-page{min-height:80vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:40px 24px}
.error-page h1{font-size:8rem;font-weight:900;color:var(--teal);line-height:1}
.error-page h2{font-size:2rem;font-weight:700;color:var(--navy);margin-bottom:16px}
.error-page p{color:var(--gray);margin-bottom:32px;font-size:1.1rem}

/* FOOTER */
footer{background:var(--navy);color:#94a3b8;padding:64px 24px 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;max-width:1200px;margin:0 auto 48px}
.footer-brand img{height:48px;width:auto;margin-bottom:16px}
.footer-brand p{font-size:0.95rem;line-height:1.7;color:#64748b}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:#64748b;text-decoration:none;font-size:0.9rem;transition:color 0.2s}
.footer-col ul li a:hover{color:var(--teal)}
.footer-bottom{max-width:1200px;margin:0 auto;padding-top:32px;border-top:1px solid #1e293b;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px}
.footer-bottom p{font-size:0.85rem;color:#475569}
.footer-bottom a{color:#475569;text-decoration:none;font-size:0.85rem;transition:color 0.2s}
.footer-bottom a:hover{color:var(--teal)}

/* RESPONSIVE */
@media(max-width:1024px){
  .two-col{grid-template-columns:1fr;gap:40px}
  .two-col.reverse{direction:ltr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  nav{display:none;position:absolute;top:72px;left:0;right:0;background:var(--navy);padding:16px;border-top:1px solid #1e293b}
  nav.open{display:block}
  nav ul{flex-direction:column;gap:4px}
  .hamburger{display:flex}
  .footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
  section{padding:56px 16px}
  .contact-form{padding:28px 20px}
  .banner-section{background-attachment:scroll}
}
@media(max-width:480px){
  .blog-grid{grid-template-columns:1fr}
  .btn-group{flex-direction:column;align-items:center}
}