/* ===== RESET & BASE ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#1a2744;
  --navy-light:#243354;
  --navy-dark:#0f1a2e;
  --orange:#e8722a;
  --orange-light:#f4923e;
  --green:#2eab6f;
  --white:#ffffff;
  --gray-50:#f8f9fb;
  --gray-100:#eef1f5;
  --gray-200:#d8dde6;
  --gray-400:#98a2b3;
  --gray-600:#5a6478;
  --gray-800:#2d3444;
  --shadow-sm:0 1px 3px rgba(26,39,68,.08);
  --shadow-md:0 4px 12px rgba(26,39,68,.12);
  --shadow-lg:0 8px 30px rgba(26,39,68,.16);
  --radius:8px;
  --transition:0.3s ease;
}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;color:var(--gray-800);line-height:1.7;background:var(--white);overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--orange);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--orange-light)}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.25;color:var(--navy)}
h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800}
h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:700}
h3{font-size:clamp(1.15rem,2vw,1.5rem);font-weight:600}
p{margin-bottom:1rem}

/* ===== UTILITIES ===== */
.container{width:90%;max-width:1140px;margin:0 auto}
.btn{display:inline-block;padding:.85rem 2rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;cursor:pointer;transition:all var(--transition);border:none;text-align:center}
.btn-primary{background:var(--orange);color:var(--white)}
.btn-primary:hover{background:var(--orange-light);color:var(--white);transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-secondary{background:transparent;color:var(--white);border:2px solid var(--white)}
.btn-secondary:hover{background:var(--white);color:var(--navy)}
.section-title{text-align:center;margin-bottom:3rem}
.section-title span{color:var(--orange)}
.section-title p{color:var(--gray-600);max-width:640px;margin:.75rem auto 0;font-size:1.05rem}

/* ===== FADE-IN ANIMATIONS ===== */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
.fade-in-left{opacity:0;transform:translateX(-40px);transition:opacity .6s ease,transform .6s ease}
.fade-in-left.visible{opacity:1;transform:translateX(0)}
.fade-in-right{opacity:0;transform:translateX(40px);transition:opacity .6s ease,transform .6s ease}
.fade-in-right.visible{opacity:1;transform:translateX(0)}

/* ===== HEADER / NAV ===== */
.header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(26,39,68,.95);backdrop-filter:blur(8px);transition:all var(--transition)}
.header.scrolled{box-shadow:var(--shadow-md)}
.header .container{display:flex;align-items:center;justify-content:space-between;padding:.75rem 0}
.logo{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.25rem;color:var(--white)}
.logo svg{width:38px;height:38px}
.logo:hover{color:var(--orange)}
.nav-links{display:flex;gap:1.8rem;align-items:center}
.nav-links a{color:rgba(255,255,255,.85);font-weight:500;font-size:.95rem;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--orange);transition:width var(--transition)}
.nav-links a:hover,.nav-links a.active{color:var(--white)}
.nav-links a:hover::after,.nav-links a.active::after{width:100%}
.nav-links .btn{padding:.55rem 1.4rem;font-size:.9rem}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.burger span{display:block;width:26px;height:2.5px;background:var(--white);border-radius:2px;transition:all var(--transition)}

/* ===== HERO ===== */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;padding-top:80px;overflow:hidden;background:linear-gradient(135deg,rgba(15,26,46,.88),rgba(26,39,68,.82)),url('https://images.unsplash.com/photo-1560518883-ce09059eeffa?w=1400&q=80') center/cover no-repeat}
.hero .container{position:relative;z-index:2}
.hero-content{max-width:640px}
.hero h1{color:var(--white);margin-bottom:1.2rem}
.hero h1 span{color:var(--orange)}
.hero p{color:rgba(255,255,255,.85);font-size:1.15rem;margin-bottom:2rem;max-width:540px}
.hero-badges{display:flex;flex-wrap:wrap;gap:.8rem;margin-bottom:2rem}
.hero-badge{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:50px;padding:.45rem 1.1rem;color:var(--white);font-size:.85rem;font-weight:500;backdrop-filter:blur(4px)}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap}
.hero-stats{display:flex;gap:2.5rem;margin-top:3rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,.15)}
.hero-stat{text-align:center;color:var(--white)}
.hero-stat .number{font-size:2rem;font-weight:800;color:var(--orange)}
.hero-stat .label{font-size:.85rem;opacity:.8}

/* ===== ABOUT SECTION ===== */
.about{padding:5rem 0;background:var(--gray-50)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.about-image{border-radius:var(--radius);overflow:hidden;height:380px;background:linear-gradient(135deg,rgba(26,39,68,.3),rgba(232,114,42,.2)),url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?w=800&q=80') center/cover no-repeat;box-shadow:var(--shadow-lg)}
.about-content h2{margin-bottom:1rem}
.about-content .highlight{color:var(--orange);font-weight:600}
.about-features{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:1.5rem}
.about-feature{display:flex;align-items:start;gap:.6rem;padding:.8rem;background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
.about-feature .icon{width:36px;height:36px;border-radius:50%;background:var(--orange);color:var(--white);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1rem}
.about-feature h4{font-size:.9rem;margin-bottom:.15rem}
.about-feature p{font-size:.8rem;color:var(--gray-600);margin:0}

/* ===== SERVICES SECTION ===== */
.services{padding:5rem 0}
.services-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}
.service-card{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:2rem 1.5rem;transition:all var(--transition);position:relative;overflow:hidden}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:var(--orange);transform:scaleX(0);transition:transform var(--transition)}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--orange)}
.service-card:hover::before{transform:scaleX(1)}
.service-icon{width:50px;height:50px;border-radius:var(--radius);background:linear-gradient(135deg,var(--navy),var(--navy-light));color:var(--white);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:1rem}
.service-card h3{font-size:1.1rem;margin-bottom:.5rem}
.service-card p{color:var(--gray-600);font-size:.92rem;margin:0}

/* ===== ZONES SECTION ===== */
.zones{padding:5rem 0;background:var(--navy);color:var(--white)}
.zones .section-title h2{color:var(--white)}
.zones .section-title p{color:rgba(255,255,255,.7)}
.zones-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1rem}
.zone-item{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:1.2rem;text-align:center;transition:all var(--transition)}
.zone-item:hover{background:rgba(232,114,42,.15);border-color:var(--orange)}
.zone-item h4{font-size:1rem;margin-bottom:.25rem}
.zone-item p{font-size:.85rem;opacity:.7;margin:0}

/* ===== CTA SECTION ===== */
.cta-section{padding:4rem 0;background:linear-gradient(135deg,var(--orange),var(--orange-light));color:var(--white);text-align:center}
.cta-section h2{color:var(--white);margin-bottom:1rem}
.cta-section p{opacity:.9;margin-bottom:2rem;font-size:1.1rem}
.cta-section .btn{background:var(--navy);color:var(--white)}
.cta-section .btn:hover{background:var(--navy-dark);transform:translateY(-2px)}

/* ===== TESTIMONIALS ===== */
.testimonials{padding:5rem 0;background:var(--gray-50)}
.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}
.testimonial-card{background:var(--white);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow-sm);position:relative}
.testimonial-card::before{content:'\201C';position:absolute;top:10px;right:20px;font-size:4rem;color:var(--gray-200);font-family:Georgia,serif;line-height:1}
.testimonial-stars{color:var(--orange);margin-bottom:.75rem;font-size:1.1rem}
.testimonial-card p{color:var(--gray-600);font-style:italic;margin-bottom:1rem}
.testimonial-author{font-weight:700;color:var(--navy);font-size:.95rem}
.testimonial-location{color:var(--gray-400);font-size:.85rem}

/* ===== FAQ ===== */
.faq{padding:5rem 0}
.faq-list{max-width:780px;margin:0 auto}
.faq-item{border:1px solid var(--gray-200);border-radius:var(--radius);margin-bottom:.75rem;overflow:hidden;transition:all var(--transition)}
.faq-item.active{border-color:var(--orange);box-shadow:var(--shadow-sm)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:1.2rem 1.5rem;cursor:pointer;font-weight:600;color:var(--navy);background:var(--white);transition:all var(--transition)}
.faq-question:hover{color:var(--orange)}
.faq-question .icon{font-size:1.3rem;transition:transform var(--transition);color:var(--orange)}
.faq-item.active .faq-question .icon{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;background:var(--gray-50)}
.faq-answer p{padding:0 1.5rem 1.2rem;color:var(--gray-600);font-size:.95rem}

/* ===== DIAGNOSTICS PAGE ===== */
.page-hero{padding:8rem 0 4rem;background:linear-gradient(135deg,rgba(15,26,46,.9),rgba(26,39,68,.85)),url('https://images.unsplash.com/photo-1582268611958-ebfd161ef9cf?w=1400&q=80') center/cover no-repeat;color:var(--white);text-align:center}
.page-hero h1{color:var(--white);margin-bottom:1rem}
.page-hero p{opacity:.85;font-size:1.1rem;max-width:600px;margin:0 auto}
.breadcrumb{display:flex;justify-content:center;gap:.5rem;margin-bottom:1.5rem;font-size:.9rem}
.breadcrumb a{color:rgba(255,255,255,.7)}
.breadcrumb a:hover{color:var(--orange)}
.breadcrumb span{color:rgba(255,255,255,.5)}

.diag-detail{padding:4rem 0}
.diag-detail:nth-child(even){background:var(--gray-50)}
.diag-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.diag-grid.reverse{direction:rtl}
.diag-grid.reverse>*{direction:ltr}
.diag-visual{height:280px;border-radius:var(--radius);box-shadow:var(--shadow-md);overflow:hidden}
.diag-content h2{margin-bottom:.75rem}
.diag-content h2 .icon-diag{margin-right:.5rem;color:var(--orange)}
.diag-content ul{margin:1rem 0}
.diag-content ul li{padding:.35rem 0;padding-left:1.5rem;position:relative;color:var(--gray-600)}
.diag-content ul li::before{content:'';position:absolute;left:0;top:.7rem;width:8px;height:8px;border-radius:50%;background:var(--orange)}

/* ===== TARIFS PAGE ===== */
.tarifs-intro{padding:4rem 0;text-align:center}
.tarifs-intro p{max-width:700px;margin:0 auto 1rem;color:var(--gray-600);font-size:1.05rem}
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;padding:0 0 4rem}
.pricing-card{background:var(--white);border:2px solid var(--gray-200);border-radius:var(--radius);padding:2.5rem 2rem;text-align:center;transition:all var(--transition);position:relative}
.pricing-card.featured{border-color:var(--orange);transform:scale(1.03)}
.pricing-card.featured::after{content:'Populaire';position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--orange);color:var(--white);padding:.3rem 1.2rem;border-radius:50px;font-size:.8rem;font-weight:600}
.pricing-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.pricing-card.featured:hover{transform:scale(1.03) translateY(-4px)}
.pricing-card h3{color:var(--navy);margin-bottom:.5rem}
.pricing-card .price{font-size:2.5rem;font-weight:800;color:var(--orange);margin:.75rem 0}
.pricing-card .price small{font-size:.9rem;color:var(--gray-400);font-weight:400}
.pricing-card .price-note{font-size:.85rem;color:var(--gray-400);margin-bottom:1.5rem}
.pricing-card ul{text-align:left;margin-bottom:2rem}
.pricing-card ul li{padding:.5rem 0;border-bottom:1px solid var(--gray-100);color:var(--gray-600);font-size:.92rem;padding-left:1.5rem;position:relative}
.pricing-card ul li::before{content:'';position:absolute;left:0;top:.85rem;width:8px;height:8px;border-radius:50%;background:var(--green)}

/* ===== CONTACT PAGE ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;padding:4rem 0}
.contact-info h2{margin-bottom:1.5rem}
.contact-item{display:flex;gap:1rem;margin-bottom:1.5rem;align-items:start}
.contact-item .ci-icon{width:48px;height:48px;border-radius:var(--radius);background:var(--navy);color:var(--white);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.2rem}
.contact-item h4{font-size:1rem;margin-bottom:.2rem;color:var(--navy)}
.contact-item p{color:var(--gray-600);font-size:.92rem;margin:0}
.contact-map{width:100%;height:250px;border-radius:var(--radius);overflow:hidden;margin-top:1.5rem;background:var(--gray-200)}
.contact-map iframe{width:100%;height:100%;border:0}
.contact-form{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius);padding:2.5rem;box-shadow:var(--shadow-sm)}
.contact-form h3{margin-bottom:1.5rem;color:var(--navy)}
.form-group{margin-bottom:1.2rem}
.form-group label{display:block;font-weight:600;font-size:.9rem;color:var(--navy);margin-bottom:.4rem}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:.85rem 1rem;border:1px solid var(--gray-200);border-radius:var(--radius);font-size:.95rem;font-family:inherit;transition:border-color var(--transition);background:var(--gray-50)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(232,114,42,.1)}
.form-group textarea{min-height:120px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

/* ===== 404 ===== */
.page-404{min-height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;background:var(--gray-50);padding:2rem}
.page-404 h1{font-size:clamp(5rem,12vw,10rem);color:var(--orange);line-height:1;margin-bottom:1rem}
.page-404 h2{margin-bottom:1rem}
.page-404 p{color:var(--gray-600);margin-bottom:2rem;max-width:480px}

/* ===== FOOTER ===== */
.footer{background:var(--navy-dark);color:rgba(255,255,255,.75);padding:4rem 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;padding-bottom:3rem}
.footer-col h4{color:var(--white);font-size:1rem;margin-bottom:1rem}
.footer-col p{font-size:.9rem;margin-bottom:.5rem}
.footer-col a{color:rgba(255,255,255,.65);font-size:.9rem;display:block;padding:.25rem 0;transition:color var(--transition)}
.footer-col a:hover{color:var(--orange)}
.footer-brand{font-size:1.15rem;font-weight:700;color:var(--white);display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}
.footer-brand svg{width:32px;height:32px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.5rem 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-size:.85rem}
.footer-bottom a{color:rgba(255,255,255,.5);font-size:.85rem}
.footer-bottom a:hover{color:var(--orange)}
.footer-legal{display:flex;gap:1.5rem;flex-wrap:wrap}

/* ===== MOBILE ===== */
@media(max-width:968px){
  .about-grid,.diag-grid,.diag-grid.reverse,.contact-grid{grid-template-columns:1fr}
  .diag-grid.reverse{direction:ltr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero-stats{gap:1.5rem}
}
@media(max-width:768px){
  .nav-links{position:fixed;top:0;right:-100%;width:80%;max-width:320px;height:100vh;background:var(--navy-dark);flex-direction:column;align-items:flex-start;padding:5rem 2rem 2rem;gap:1.2rem;transition:right var(--transition);box-shadow:var(--shadow-lg)}
  .nav-links.active{right:0}
  .burger{display:flex}
  .hero{min-height:80vh;padding-top:100px}
  .hero-stats{flex-wrap:wrap;gap:1.5rem}
  .about-features{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .pricing-card.featured{transform:none}
  .pricing-card.featured:hover{transform:translateY(-4px)}
}
@media(max-width:480px){
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .hero-badges{justify-content:center}
}