*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
  --blue:#1a56db;
  --blue-dark:#1442b0;
  --blue-light:#e8effc;
  --yellow:#f59e0b;
  --yellow-dark:#d97706;
  --gray-50:#f9fafb;
  --gray-100:#f3f4f6;
  --gray-200:#e5e7eb;
  --gray-600:#4b5563;
  --gray-700:#374151;
  --gray-800:#1f2937;
  --gray-900:#111827;
  --white:#ffffff;
  --shadow:0 1px 3px rgba(0,0,0,.1),0 1px 2px rgba(0,0,0,.06);
  --shadow-md:0 4px 6px rgba(0,0,0,.07),0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:0 10px 25px rgba(0,0,0,.1);
  --radius:12px;
  --transition:.3s ease;
}

html{scroll-behavior:smooth;font-size:16px}

body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--gray-800);
  line-height:1.6;
  background:var(--white);
}

a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%;display:block}

.container{max-width:1200px;margin:0 auto;padding:0 24px}

.section-header{text-align:center;margin-bottom:48px}
.section-header h2{font-size:2rem;color:var(--gray-900);margin-bottom:8px;font-weight:700}
.section-header p{color:var(--gray-600);font-size:1.1rem}

/* ─── HEADER ─── */
#header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.95);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--gray-200);
  transition:var(--transition);
}
#header.scrolled{box-shadow:var(--shadow-md)}

.header-inner{
  max-width:1200px;margin:0 auto;padding:0 24px;
  display:flex;align-items:center;justify-content:space-between;height:72px;
}

.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.35rem;color:var(--blue)}
.logo-icon{font-size:1.6rem}

#nav ul{display:flex;gap:32px}
#nav a{font-size:.95rem;color:var(--gray-700);font-weight:500;transition:color var(--transition)}
#nav a:hover{color:var(--blue)}

.btn-header{
  background:var(--blue);color:var(--white);padding:8px 20px;
  border-radius:8px;font-weight:600;font-size:.9rem;
  transition:background var(--transition);
}
.btn-header:hover{background:var(--blue-dark)}

.menu-toggle{
  display:none;flex-direction:column;gap:5px;
  background:none;border:none;cursor:pointer;padding:4px;
}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--gray-800);border-radius:2px;transition:var(--transition)}

/* ─── HERO ─── */
.hero{
  position:relative;min-height:92vh;display:flex;align-items:center;
  justify-content:center;text-align:center;overflow:hidden;
  margin-top:72px;
}
.hero-bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  z-index:-2;
}
.hero-overlay{
  position:absolute;inset:0;z-index:-1;
  background:linear-gradient(135deg,rgba(26,86,219,.82),rgba(15,50,130,.9));
}
.hero-content{
  position:relative;z-index:1;color:var(--white);
  max-width:800px;padding:40px 24px;
}
.hero-content h1{
  font-size:3rem;font-weight:800;line-height:1.2;margin-bottom:20px;
  text-shadow:0 2px 8px rgba(0,0,0,.2);
}
.hero-content p{font-size:1.2rem;opacity:.92;margin-bottom:36px}
.hero-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

.btn{
  display:inline-block;padding:14px 32px;border-radius:8px;
  font-weight:600;font-size:1rem;cursor:pointer;transition:all var(--transition);
  border:2px solid transparent;
}
.btn-primary{background:var(--yellow);color:var(--gray-900);border-color:var(--yellow)}
.btn-primary:hover{background:var(--yellow-dark);border-color:var(--yellow-dark)}
.btn-outline{background:transparent;color:var(--white);border-color:rgba(255,255,255,.6)}
.btn-outline:hover{background:rgba(255,255,255,.15);border-color:var(--white)}

/* ─── SERVICES ─── */
.services{padding:100px 0;background:var(--gray-50)}

.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}

.service-card{
  background:var(--white);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);transition:transform var(--transition),box-shadow var(--transition);
}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.service-card img{width:100%;height:220px;object-fit:cover}
.service-card-body{padding:24px}
.service-card-body h3{font-size:1.2rem;color:var(--gray-900);margin-bottom:10px;font-weight:600}
.service-card-body p{color:var(--gray-600);font-size:.95rem;line-height:1.6}

/* ─── ABOUT ─── */
.about{padding:100px 0;background:var(--white)}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.about-image img{border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;height:auto}
.about-text h2{font-size:2rem;color:var(--gray-900);margin-bottom:16px;font-weight:700}
.about-text p{color:var(--gray-600);margin-bottom:16px;line-height:1.7}

.about-list{margin-top:20px}
.about-list li{
  padding:8px 0;color:var(--gray-700);font-weight:500;
  display:flex;align-items:center;gap:10px;
}
.about-list li::before{content:"✓";color:var(--blue);font-weight:700;font-size:1.1rem}
.certification-badge{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--gray-800)}
.certification-badge::before{display:none}
.legrand-logo{height:28px;width:auto}

/* ─── CONTACT ─── */
.contact{padding:100px 0;background:var(--gray-50)}

.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px}

.contact-info{display:flex;flex-direction:column;gap:28px}
.contact-item{display:flex;gap:16px;align-items:flex-start}
.contact-icon{font-size:1.6rem;flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--blue-light);border-radius:10px}
.contact-item strong{display:block;color:var(--gray-900);font-size:1rem;margin-bottom:4px}
.contact-item p{color:var(--gray-600);font-size:.95rem;line-height:1.5}
.contact-item a{color:var(--blue);transition:color var(--transition)}
.contact-item a:hover{color:var(--blue-dark)}

.contact-form{
  background:var(--white);padding:36px;border-radius:var(--radius);
  box-shadow:var(--shadow-md);
}

.form-group{margin-bottom:20px}
.form-group label{
  display:block;font-size:.9rem;font-weight:600;color:var(--gray-700);
  margin-bottom:6px;
}
.form-group input,
.form-group textarea{
  width:100%;padding:12px 16px;border:1px solid var(--gray-200);
  border-radius:8px;font-size:1rem;font-family:inherit;
  transition:border-color var(--transition);background:var(--white);
}
.form-group input:focus,
.form-group textarea:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(26,86,219,.1)}
.form-group textarea{resize:vertical;min-height:120px}
.form-group input.invalid,
.form-group textarea.invalid{border-color:#dc2626}
.error-msg{color:#dc2626;font-size:.82rem;margin-top:4px;display:block;min-height:1.2em}

.btn-submit{width:100%;margin-top:4px}
.form-feedback{
  margin-top:16px;padding:14px;border-radius:8px;font-size:.95rem;font-weight:500;
  text-align:center;
}
.form-feedback.success{background:#d1fae5;color:#065f46}
.form-feedback.error{background:#fee2e2;color:#991b1b}

/* ─── FOOTER ─── */
footer{background:var(--gray-900);color:rgba(255,255,255,.8);padding:48px 0 24px}
.footer-inner{text-align:center}
.footer-brand{display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:24px}
.footer-brand .logo-icon{font-size:1.4rem}
.footer-brand .logo-text{font-size:1.3rem;font-weight:700;color:var(--white)}
.footer-brand p{font-size:.9rem;opacity:.7;margin-top:4px}

.footer-links{display:flex;gap:24px;justify-content:center;margin-bottom:32px;flex-wrap:wrap}
.footer-links a{font-size:.9rem;opacity:.7;transition:opacity var(--transition)}
.footer-links a:hover{opacity:1}

.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px}
.footer-bottom p{font-size:.82rem;opacity:.5}

/* ─── MOBILE MENU ─── */
#nav.open{display:flex !important}

/* ─── RESPONSIVE ─── */
@media(max-width:992px){
  .services-grid{grid-template-columns:1fr;max-width:500px;margin:0 auto}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .about-image{order:-1}
  .contact-grid{grid-template-columns:1fr}
}

@media(max-width:768px){
  .menu-toggle{display:flex}

  #nav{
    display:none;position:fixed;top:72px;left:0;right:0;
    background:var(--white);border-bottom:1px solid var(--gray-200);
    box-shadow:var(--shadow-lg);padding:20px 24px;z-index:999;
  }
  #nav ul{flex-direction:column;gap:16px}
  #nav a{font-size:1.05rem}

  .btn-header{display:none}

  .hero{min-height:80vh;margin-top:72px}
  .hero-content h1{font-size:2rem}
  .hero-content p{font-size:1.05rem}

  .section-header h2{font-size:1.6rem}

  .services{padding:72px 0}
  .about{padding:72px 0}
  .contact{padding:72px 0}
}