:root {
  --primary: #0b3d5c;
  --accent: #f28c28;
  --light: #f4f8fb;
  --text: #1f2d3a;
  --muted: #5d6d7c;
  --radius: 18px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Poppins', sans-serif; color: var(--text); line-height: 1.6; }
.container { width: min(1180px, 92%); margin: 0 auto; }
a { text-decoration: none; color: inherit; }

/* Toutes les photos : cadre fixe, image remplaçable sans casser la mise en page */
.photo { display: block; width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }

.btn { display: inline-block; background: var(--accent); color: #fff; padding: 14px 28px; border-radius: 50px; font-weight: 600; border: 2px solid var(--accent); cursor: pointer; transition: transform .2s, background .2s; font-family: inherit; font-size: 1rem; }
.btn:hover { transform: translateY(-2px); background: #d97614; }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-small { padding: 9px 20px; font-size: .9rem; }

.site-header { position: sticky; top: 0; background: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.06); z-index: 10; }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 16px 0; }
.logo { font-weight: 800; font-size: 1.6rem; color: var(--primary); letter-spacing: 1px; }
.nav { display: flex; gap: 26px; align-items: center; font-weight: 500; }
.nav a:not(.btn):hover { color: var(--accent); }

.hero { background: var(--light); padding: 80px 0; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 50px; align-items: center; }
.tag { display: inline-block; background: #fff; color: var(--primary); padding: 6px 16px; border-radius: 50px; font-weight: 600; font-size: .9rem; margin-bottom: 18px; }
.hero h1 { font-size: 2.8rem; line-height: 1.15; color: var(--primary); margin-bottom: 16px; }
.subtitle { font-size: 1.25rem; font-weight: 600; color: var(--accent); margin-bottom: 14px; }
.description { color: var(--muted); margin-bottom: 28px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-image { height: 460px; box-shadow: 0 20px 40px rgba(11,61,92,.18); border-radius: var(--radius); }

.clients { background: var(--primary); color: #fff; padding: 34px 0; }
.clients-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; text-align: center; }
.client i { font-size: 1.7rem; color: var(--accent); margin-bottom: 8px; display: block; }
.client span { font-size: .88rem; }

.section { padding: 90px 0; }
.section-alt { background: var(--light); }
.section-title { font-size: 2.2rem; color: var(--primary); text-align: center; margin-bottom: 12px; }
.section-title.left { text-align: left; }
.section-intro { text-align: center; color: var(--muted); margin-bottom: 48px; }

.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card { background: #fff; border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0,0,0,.07); overflow: hidden; transition: transform .25s; }
.service-card:hover { transform: translateY(-6px); }
.service-card .photo { height: 200px; border-radius: var(--radius) var(--radius) 0 0; }
.service-body { padding: 22px; }
.service-body h3 { color: var(--primary); margin-bottom: 8px; font-size: 1.1rem; }
.service-body p { color: var(--muted); font-size: .93rem; }

.carousels { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; margin-top: 40px; }
.carousel { position: relative; }
.carousel-title { color: var(--primary); margin-bottom: 14px; font-size: 1.3rem; }
.carousel-track { position: relative; height: 420px; }
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity .6s ease; pointer-events: none; }
.slide.active { opacity: 1; pointer-events: auto; }
.slide .photo { height: 340px; }
.slide figcaption { margin-top: 14px; padding: 14px 18px; background: #fff; border-radius: 12px; color: var(--text); font-weight: 500; box-shadow: 0 4px 14px rgba(0,0,0,.06); }
.carousel-btn { position: absolute; top: 210px; width: 44px; height: 44px; border-radius: 50%; border: none; background: rgba(255,255,255,.92); color: var(--primary); cursor: pointer; box-shadow: 0 4px 12px rgba(0,0,0,.15); transition: background .2s; }
.carousel-btn:hover { background: var(--accent); color: #fff; }
.carousel-btn.prev { left: 12px; }
.carousel-btn.next { right: 12px; }
.carousel-dots { display: flex; justify-content: center; gap: 8px; margin-top: 14px; }
.carousel-dots button { width: 10px; height: 10px; border-radius: 50%; border: none; background: #c5d3de; cursor: pointer; }
.carousel-dots button.active { background: var(--accent); width: 26px; border-radius: 6px; }

.why-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: center; }
.why-image { height: 520px; }
.why-list { list-style: none; margin-top: 24px; display: grid; gap: 22px; }
.why-list li { display: flex; gap: 16px; }
.why-list i { font-size: 1.3rem; color: #fff; background: var(--accent); width: 48px; height: 48px; border-radius: 14px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.why-list strong { color: var(--primary); }
.why-list p { color: var(--muted); font-size: .95rem; }

.contact-inner { max-width: 760px; }
.contact-form { display: grid; gap: 16px; background: #fff; padding: 36px; border-radius: var(--radius); box-shadow: 0 10px 30px rgba(0,0,0,.07); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input, .contact-form select, .contact-form textarea { width: 100%; padding: 14px 16px; border: 1px solid #d5e0e8; border-radius: 12px; font-family: inherit; font-size: 1rem; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
.contact-form .btn { justify-self: start; }

.site-footer { background: var(--primary); color: #cfdbe5; text-align: center; padding: 40px 0; }
.site-footer .logo { color: #fff; margin-bottom: 6px; }

@media (max-width: 1000px) {
  .hero-inner, .why-inner, .carousels { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .clients-grid { grid-template-columns: repeat(3, 1fr); }
  .nav a:not(.btn) { display: none; }
}
@media (max-width: 600px) {
  .hero h1 { font-size: 2rem; }
  .hero-image { height: 300px; }
  .services-grid, .form-row { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
  .why-image { height: 340px; }
  .carousel-track { height: 360px; }
  .slide .photo { height: 260px; }
  .carousel-btn { top: 170px; }
}