/* Thème: construction — jaune foncé + gris */
:root{
  --bg:#ffffff;
  --muted:#666;
  --accent:#ffb300;
  --accent-700:#ff8f00;
  --dark:#2b2b2b;
  --container:1100px;
  --radius:8px;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial; color:var(--dark);background:var(--bg);}

/* Subtle company accent inside the page body to reinforce construction brand */
body{position:relative;overflow-x:hidden}
body::before{
  /* thin top accent line */
  content:"";position:fixed;left:0;right:0;top:0;height:6px;background:linear-gradient(90deg,var(--accent),var(--accent-700));opacity:0.95;z-index:5;pointer-events:none;
}
body::after{
  /* subtle left side accent ribbon */
  content:"";position:fixed;left:0;top:80px;width:44px;height:100vh;background:linear-gradient(180deg,rgba(255,179,0,0.12),rgba(255,143,0,0.06));z-index:1;pointer-events:none;
}
.container{max-width:var(--container);margin:0 auto;padding:0 18px}

/* ============== FLOATING ACTION BUTTON ==============  */
.fab-contact{
  position:fixed;
  bottom:20px;
  right:20px;
  z-index:999;
  display:flex;
  align-items:center;
  gap:8px;
  padding:12px 16px;
  background:var(--accent);
  color:#111;
  text-decoration:none;
  border-radius:50px;
  font-weight:700;
  box-shadow:0 4px 12px rgba(0,0,0,0.2);
  transition:all 0.3s ease;
}
.fab-contact:hover{
  transform:scale(1.05);
  box-shadow:0 6px 16px rgba(0,0,0,0.3);
}
.fab-icon{font-size:20px}
.fab-label{font-size:14px}

@media (max-width:600px){
  .fab-contact{
    bottom:16px;
    right:16px;
    padding:10px 14px;
  }
  .fab-label{display:none}
}

/* ============== CAROUSEL ==============  */
.hero-carousel{
  position:relative;
  width:100%;
  height:280px;
  overflow:hidden;
  border-radius:6px;
}
.carousel-container{
  position:relative;
  width:100%;
  height:100%;
}
div .hero-carousel{
  height:500%;
}
.carousel-slide{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:100%;
  opacity:0;
  transition:opacity 0.6s ease-in-out;
}
.carousel-slide.active{
  opacity:1;
}
.carousel-controls{
  position:absolute;
  top:50%;
  left:0;
  right:0;
  display:flex;
  justify-content:space-between;
  padding:0 12px;
  transform:translateY(-50%);
  z-index:10;
}
.carousel-prev,.carousel-next{
  background:rgba(0,0,0,0.4);
  color:#fff;
  border:none;
  padding:10px 14px;
  font-size:18px;
  cursor:pointer;
  border-radius:4px;
  transition:all 0.3s ease;
}
.carousel-prev:hover,.carousel-next:hover{
  background:rgba(0,0,0,0.7);
}
.carousel-dots{
  position:absolute;
  bottom:12px;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  gap:8px;
  z-index:10;
}
.carousel-dots .dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:rgba(255,255,255,0.5);
  border:none;
  cursor:pointer;
  transition:all 0.3s ease;
}
.carousel-dots .dot.active{
  background:#fff;
  width:28px;
  border-radius:5px;
}

/* ============== HEADER ==============  */
.site-header {
  /* subtle professional dark gradient background only (keeps other header styles intact) */
  background: linear-gradient(180deg, rgba(6,12,30,0.88), rgba(12,14,20,0.65));
  position:relative;
  height:auto;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 0;position:relative;z-index:20}
.brand{display:flex;flex-direction:column;position:relative;z-index:20}
.logo{font-weight:800;color:#fff;text-decoration:none;font-size:30px}
.logo2{font-weight:500;color:#fff;text-decoration:none;font-size:10px}
.logo .dot{color:rgb(226, 84, 84)}
.logo2 .dot{color:#f4c14b}
.lead .dot{color:rebeccapurple}
.tag{font-size:12px;color:rgba(255,255,255,0.7)}
.main-nav{display:flex;gap:18px;align-items:center}
.main-nav a{color:#fff;text-decoration:none;font-weight:600;transition:color 0.3s ease}
.main-nav a:hover{color:var(--accent)}
.nav-toggle{display:none;background:none;border:0;font-size:20px;color:#fff;cursor:pointer}

.btn .sous{font-size:10px}

/* ============== HERO ==============  */
.hero{background:linear-gradient(180deg, rgba(255,247,230,0.9) 0%, rgba(255,255,255,0.95) 100%);padding:56px 0}
.hero-inner{text-align:left}
.hero h1{margin:0;font-size:34px}
.lead{color:var(--muted);margin:8px 0 18px}
.hero-actions{display:flex;gap:12px}
.btn{display:inline-block;padding:10px 16px;border-radius:6px;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:all 0.3s ease}
.btn.primary{background:var(--accent);color:#111;text-align: center;}
.btn.primary:hover{background:var(--accent-700);transform:translateY(-2px)}
.btn.ghost{background:transparent;border:1px solid #ddd;color:var(--dark);text-align: center;}
.btn.ghost:hover{background:#f5f5f5;border-color:var(--dark)}

.section{padding:40px 0;scroll-behavior:smooth}
.section h2{margin-top:0;font-size:32px}
.muted{color:var(--muted)}

/* ============== ABOUT US SECTION ==============  */
.about-us{background:#f9f9f9}
.about-content{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:start}
.about-text h2{color:var(--dark);margin-bottom:16px}
.about-text p{color:var(--muted);line-height:1.6;margin-bottom:16px}
.about-values{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.about-values li{color:var(--dark);font-weight:600}
.about-content{display:flex;flex-direction:column;gap:32px}
.about-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;width:100%}
.stat{text-align:center;padding:20px;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.05)}
.stat-number{display:block;font-size:32px;font-weight:800;color:var(--accent);margin-bottom:8px}
.stat p{margin:0;color:var(--muted);font-size:14px}

/* Accordion */
.accordion{margin-top:20px;display:block}
.accordion-item{border:1px solid #eee;border-radius:8px;margin-bottom:10px;overflow:hidden;transition:all 0.3s ease}
.accordion-item:hover{box-shadow:0 2px 8px rgba(0,0,0,0.08)}
.accordion-toggle{width:100%;text-align:left;padding:12px 16px;background:#fff;border:0;font-weight:700;cursor:pointer;transition:all 0.3s ease}
.accordion-toggle:hover{background:#f5f5f5}
.accordion-toggle[aria-expanded="true"]{background:#fff8e6}
.accordion-panel{padding:0 16px 16px;display:none;color:var(--muted);line-height:1.6;animation:slideDown 0.3s ease}

@keyframes slideDown{
  from{opacity:0;transform:translateY(-10px)}
  to{opacity:1;transform:translateY(0)}
}

/* Portfolio grid - Carousel horizontal sur tous les appareils */
.portfolio{position:relative}
.grid{display:grid;gap:14px}
.gallery{
  display:flex;
  gap:12px;
  overflow-x:auto;
  overflow-y:hidden;
  scroll-snap-type:x mandatory;
  padding-bottom:10px;
  -webkit-overflow-scrolling:touch;
  scroll-behavior:smooth;
}
.gallery::-webkit-scrollbar{height:8px}
.gallery::-webkit-scrollbar-track{background:#f1f1f1;border-radius:10px}
.gallery::-webkit-scrollbar-thumb{background:#ffb300;border-radius:10px}
.gallery::-webkit-scrollbar-thumb:hover{background:#ff8f00}

.card{
  flex:0 0 calc(25% - 10px);
  min-width:250px;
  background:#fafafa;
  border-radius:8px;
  overflow:hidden;
  cursor:pointer;
  border:1px solid #eee;
  transition:all 0.3s ease;
  transform-origin:center;
  scroll-snap-align:center;
  scroll-snap-stop:always;
}

/* Showcase section (slow horizontal swipe with 1/3 indicator) */
.showcase{padding:28px 0 40px}
.showcase-slider{position:relative;display:flex;align-items:center;gap:12px;overflow:hidden;width:100%}
.showcase-track{display:flex;gap:12px;transition:transform 0.6s ease;user-select:none;-webkit-user-select:none}
.showcase-slide{flex:0 0 100%;min-width:100%;scroll-snap-align:center;display:flex;align-items:center;justify-content:center;touch-action:pan-y;position:relative;overflow:hidden}
.showcase-slide img{width:100%;height:360px;object-fit:cover;border-radius:10px;display:block;pointer-events:none}
.showcase-label{position:absolute;bottom:20px;left:20px;background:rgba(0,0,0,0.6);color:#fff;padding:16px 24px;font-size:clamp(18px,3.5vw,28px);font-weight:700;border-radius:8px;z-index:5;box-sizing:border-box;max-width:calc(100% - 48px);line-height:1.05;overflow-wrap:break-word;word-break:break-word;text-shadow:0 2px 6px rgba(0,0,0,0.6);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.showcase-prev,.showcase-next{background:rgba(0,0,0,0.6);color:#fff;border:0;padding:10px 14px;border-radius:8px;cursor:pointer;z-index:10}
.showcase-prev:hover,.showcase-next:hover{background:rgba(0,0,0,0.8)}
.showcase-indicator{position:absolute;right:12px;bottom:8px;background:rgba(0,0,0,0.6);color:#fff;padding:6px 10px;border-radius:20px;font-weight:700;z-index:10}

@media (max-width:800px){
  .showcase-slide img{height:220px}
  .showcase-label{font-size:clamp(16px,4vw,20px);padding:12px 16px;bottom:12px;left:12px;max-width:calc(100% - 32px)}
  .showcase-indicator{right:8px;bottom:6px;padding:5px 8px}
}

/* Very small screens: make label a full-width bottom bar for readability */
@media (max-width:480px){
  .showcase-label{left:0;right:0;bottom:0;border-radius:0 0 10px 10px;max-width:100%;padding:12px 14px;text-align:center;font-size:clamp(14px,4.5vw,18px)}
}

/* Toast shown when user clicks mailto and clipboard is used */
.mail-toast{position:fixed;right:18px;bottom:18px;background:rgba(0,0,0,0.86);color:#fff;padding:10px 14px;border-radius:8px;font-weight:600;z-index:9999;transition:opacity 0.28s ease;opacity:0}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 16px rgba(0,0,0,0.12);border-color:var(--accent)}
.card:focus{outline:3px solid rgba(255,179,0,0.25)}
.thumb{padding:48px 12px;text-align:center;font-weight:700;color:#222}
.card img{transition:transform 0.3s ease}
.card:hover img{transform:scale(1.05)}

/* Mobile : une card par écran */
@media (max-width:800px){
  .card{
    flex:0 0 calc(100% - 20px);
    min-width:calc(100vw - 56px);
  }
}

/* Lightbox */
.lightbox{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,0.7);z-index:1000;animation:fadeIn 0.3s ease}
.lightbox[aria-hidden="false"]{display:flex}
.lightbox-content{max-width:900px;width:92%;background:#fff;border-radius:8px;overflow:hidden;position:relative;max-height:90vh;display:flex;flex-direction:column;animation:slideUp 0.3s ease}
.lightbox-img{height:320px;background:#eee;display:flex;align-items:center;justify-content:center;font-weight:700;overflow:auto}
.lightbox-img img{max-width:100%;max-height:100%}
.lightbox-caption{padding:12px 16px;font-weight:700;font-size:16px;color:var(--dark)}
.lightbox-desc{padding:0 16px 12px;color:var(--muted);font-size:14px;line-height:1.5}
.lightbox-more{display:inline-block;margin:0 16px 16px;padding:8px 14px;background:var(--accent);color:#111;text-decoration:none;border-radius:6px;font-weight:600;font-size:14px;transition:all 0.3s ease}
.lightbox-more:hover{background:var(--accent-700);transform:translateY(-2px)}
.lightbox-close{position:absolute;right:8px;top:8px;background:none;border:0;font-size:22px;cursor:pointer;color:#333;transition:color 0.3s ease}
.lightbox-close:hover{color:var(--accent)}

@keyframes fadeIn{
  from{opacity:0}
  to{opacity:1}
}
@keyframes slideUp{
  from{transform:translateY(20px);opacity:0}
  to{transform:translateY(0);opacity:1}
}

/* Contact form */
.contact{background:#f9f9f9}
.contact-form{margin-top:18px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-grid .full{grid-column:1/-1}
label{display:block;font-size:13px;font-weight:600}
input,textarea{width:100%;padding:10px;border:1px solid #ddd;border-radius:6px;margin-top:6px;font-family:inherit;transition:border-color 0.3s ease}
input:focus,textarea:focus{outline:none;border-color:var(--accent)}
.form-actions{display:flex;align-items:center;gap:12px;margin-top:12px}
.form-status{color:var(--muted);font-size:14px;transition:color 0.3s ease}
.form-status.success{color:#4caf50}

/* Footer */
.site-footer{
  background-color: rgb(239, 236, 241);
}

/* Footer layout */
.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;padding:28px 0}
.site-footer .footer-col h3{margin:0 0 8px;font-size:16px;font-weight:700}
.site-footer address{font-style:normal;color:var(--muted);line-height:1.4}
.site-footer a{color:var(--dark);text-decoration:none;transition:color 0.3s ease}
.site-footer a:hover{color:var(--accent)}
.social-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
.social-list a{color:var(--dark);text-decoration:none;font-weight:600}
.footer-bottom{padding:12px 0;border-top:1px solid rgba(0,0,0,0.05);font-size:14px;color:var(--muted)}

/* Mobile nav open state */
.main-nav.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#333;padding:12px 0;gap:0;border-top:1px solid #555}
.main-nav.open a{padding:12px 18px;border-radius:0;background:transparent;display:block;color:#fff;transition:all 0.3s ease}
.main-nav.open a:hover{background:rgba(255,179,0,0.1);color:var(--accent)}

/* Office & Networks sections */
.office-inner{display:flex;gap:20px;align-items:flex-start}
.office-map{flex:1;min-height:220px;border-radius:8px;overflow:hidden;border:1px solid #eee}
.office-map iframe{width:100%;height:100%;min-height:260px;border:0}
.office-info{flex:1}
.office-photos{display:flex;gap:10px;margin-top:10px}
.office-photos img{width:48%;height:120px;object-fit:cover;border-radius:6px;border:1px solid #eee;transition:transform 0.3s ease}
.office-photos img:hover{transform:scale(1.03)}

.networks{background:#f9f9f9}
.social-buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px}
.social-btn{display:inline-block;padding:10px 14px;border-radius:8px;text-decoration:none;color:#fff;font-weight:700;transition:all 0.3s ease}
.social-btn.fb{background:#1877f2}
.social-btn.fb:hover{background:#165ec4;transform:translateY(-2px)}
.social-btn.ig{background:linear-gradient(45deg,#f09433,#e6683c,#dc2743,#cc2366,#bc1888)}
.social-btn.ig:hover{transform:translateY(-2px);filter:brightness(1.1)}
.social-btn.li{background:#0a66c2}
.social-btn.li:hover{background:#084b99;transform:translateY(-2px)}
.social-btn.mail{background:var(--dark)}
.social-btn.mail:hover{background:#000;transform:translateY(-2px)}
.social-btn.ws{background-color: rgb(48, 232, 23);}
.social-btn.ws:hover{transform:translateY(-2px);filter:brightness(0.9)}

/* Utilities */
.container{padding-left:18px;padding-right:18px}

/* Responsive */
@media (max-width:800px){
  .form-grid{grid-template-columns:1fr}
  .main-nav{display:none}
  .nav-toggle{display:inline-block}
  .hero h1{font-size:28px}
  .about-content{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr;gap:12px}
  .stat{padding:12px}
  .stat-number{font-size:24px}
  .office-inner{flex-direction:column}
  .office-photos img{width:100%;height:160px}
  .footer-grid{grid-template-columns:1fr}
  .gallery{grid-template-columns:1fr;overflow-x:auto;scroll-snap-type:x mandatory}
  .card{scroll-snap-align:start;flex-shrink:0}
}

/* =========================== */
/* Portfolio (unique "Réalisations" rubrique) */
/* Scoped to #portfolio so architecture/hydraulique galleries are unaffected */
/* Professional card style: grid layout, refined shadow, title overlay on image */
#portfolio .gallery{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  overflow: visible; /* allow box-shadow to be visible */
  padding-bottom: 0;
}

#portfolio .card{
  flex: initial; /* override horizontal carousel defaults */
  min-width: auto;
  background: linear-gradient(180deg, #ffffff, #fbfbfb);
  border-radius: 12px;
  border: 1px solid rgba(43,43,43,0.06);
  box-shadow: 0 8px 24px rgba(17,17,17,0.08);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
  display: block;
  position: relative;
  overflow: hidden;
}

#portfolio .card img{
  height: 220px;
  width: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

/* Title overlay using data-title attribute (no extra markup required) */
#portfolio .card::after{
  content: attr(data-title);
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 14px;
  background: linear-gradient(180deg, rgba(0,0,0,0.0), rgba(0,0,0,0.45));
  color: #fff;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 16px;
  border-radius: 8px;
  text-shadow: 0 2px 6px rgba(0,0,0,0.6);
  display: block;
  pointer-events: none;
}

#portfolio .card:hover{ transform: translateY(-6px); box-shadow: 0 18px 40px rgba(17,17,17,0.12); }
#portfolio .card:hover img{ transform: scale(1.06); }
#portfolio .card:focus{ outline: 4px solid rgba(255,179,0,0.18); }

@media (max-width:800px){
  #portfolio .card img{ height: 180px; }
  #portfolio .card::after{ font-size:14px; left:12px; right:12px; bottom:12px; }
}

/* small accessibility tweak: ensure overlay text is readable on very small images */
@media (max-width:420px){
  #portfolio .card::after{ padding:8px 10px; font-size:13px; }
}