/* Costantini Construction — style principal
   Direction : moderne épuré, bleu BTP */

:root {
  --blue-900: #042c53;
  --blue-800: #0c447c;
  --blue-600: #185fa5;
  --blue-400: #378add;
  --blue-100: #b5d4f4;
  --blue-50: #e6f1fb;

  --ink: #1c2530;
  --ink-soft: #4a5568;
  --paper: #ffffff;
  --paper-soft: #f4f7fb;
  --border: #dfe6ef;

  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 4px 20px rgba(4, 44, 83, 0.08);

  --font-heading: "Poppins", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scrollbar-gutter: stable; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-heading); margin: 0 0 0.5em; color: var(--blue-900); line-height: 1.25; }
p { margin: 0 0 1em; color: var(--ink-soft); }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 12px;
}
.section { padding: 72px 0; }
.section-alt { background: var(--paper-soft); }
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary { background: var(--blue-600); color: #fff; }
.btn-primary:hover { background: var(--blue-800); transform: translateY(-1px); }
.btn-outline { border: 1.5px solid var(--paper); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-outline-dark { border: 1.5px solid var(--blue-600); color: var(--blue-600); }
.btn-outline-dark:hover { background: var(--blue-50); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  transition: box-shadow 0.25s ease;
}
.site-header.scrolled { box-shadow: 0 4px 24px rgba(4,44,83,0.08); }
.nav {
  position: relative;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 24px;
  flex-wrap: nowrap; gap: 16px;
}
.logo { flex-shrink: 0; display: flex; align-items: center; }
.logo img { height: 88px; width: auto; display: block; transition: transform 0.2s ease; }
.logo:hover img { transform: scale(1.03); }
.nav-links { display: flex; gap: 6px; font-size: 14px; font-weight: 500; flex-shrink: 0; white-space: nowrap; }
.nav-links a {
  position: relative; padding: 8px 6px; white-space: nowrap; color: var(--ink);
  transition: color 0.15s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 6px; right: 6px; bottom: 2px;
  height: 2px; background: var(--blue-600);
  transform: scaleX(0); transform-origin: left; transition: transform 0.22s ease;
}
.nav-links a:hover { color: var(--blue-600); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; white-space: nowrap; }
.nav-cta .btn { padding: 10px 20px; font-size: 14px; white-space: nowrap; }
.nav-cta .btn-primary {
  box-shadow: 0 4px 14px rgba(24,95,165,0.3);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.nav-cta .btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(24,95,165,0.38); }
.nav-toggle {
  display: none; flex-direction: column; align-items: center; justify-content: center;
  gap: 5px; width: 38px; height: 38px; background: none; border: none; cursor: pointer;
  padding: 4px; flex-shrink: 0;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--blue-800);
  border-radius: 2px; transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-cta-row { display: none; }

@media (max-width: 1100px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.nav-links-open {
    display: flex; flex-direction: column; gap: 2px;
    position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-top: 1px solid var(--border);
    padding: 8px 24px 20px;
    box-shadow: 0 16px 28px rgba(4,44,83,0.14);
    max-height: calc(100vh - 72px); overflow-y: auto;
  }
  .nav-links.nav-links-open a {
    padding: 14px 4px; border-bottom: 1px solid var(--border); font-size: 15px;
  }
  .nav-links.nav-links-open .mobile-cta-row {
    display: flex; flex-direction: column; gap: 10px; margin-top: 16px;
  }
  .nav-links.nav-links-open .mobile-cta-row a.btn {
    text-align: center; width: 100%; border-bottom: none; padding: 14px 20px;
  }
  .nav-links.nav-links-open .mobile-cta-row a.btn-primary { color: #fff; }
  .nav-links.nav-links-open .mobile-cta-row a.btn-outline-dark { color: var(--blue-600); }
}

@media (max-width: 420px) {
  .logo img { height: 62px; }
}

/* Hero */
.hero {
  position: relative;
  min-height: 560px;
  display: flex; align-items: center;
  background: linear-gradient(rgba(4,44,83,0.72), rgba(4,44,83,0.72)), url("../assets/img/amenagement-exterieur-piscine-montelimar.webp") center/cover no-repeat;
  color: #fff;
}
.hero-content { max-width: 780px; margin: 0 auto; text-align: center; }
.hero h1 { color: #fff; font-size: 40px; margin-bottom: 16px; }
.hero p { color: rgba(255,255,255,0.88); font-size: 18px; max-width: 640px; margin: 0 auto; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; justify-content: center; }
@media (max-width: 640px) {
  .hero { min-height: 460px; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 16px; }
  .hero-actions .btn { width: 100%; text-align: center; }
}

/* Chiffres clés */
.stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
}
.stat { text-align: center; padding: 28px 16px; border-right: 1px solid var(--border); }
.stat:last-child { border-right: none; }
.stat strong { display: block; font-size: 28px; color: var(--blue-800); font-family: var(--font-heading); }
.stat span { font-size: 14px; color: var(--ink-soft); }
@media (max-width: 640px) { .stats { grid-template-columns: 1fr; } .stat { border-right: none; border-bottom: 1px solid var(--border); } }

/* Prestations */
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-top: 40px; }
@media (max-width: 960px) { .grid-5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid-5 { grid-template-columns: 1fr; } }

.card-service {
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card-service:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.card-service img { height: 150px; object-fit: cover; }
.card-service-body { padding: 18px; }
.card-service-body h3 { font-size: 17px; margin-bottom: 8px; }
.card-service-body p { font-size: 14px; margin-bottom: 12px; }
.card-service-body a { font-size: 14px; font-weight: 600; color: var(--blue-600); }

/* Pourquoi nous */
.why-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.why-grid img { border-radius: var(--radius-lg); }
.why-list { display: flex; flex-direction: column; gap: 20px; margin-top: 24px; }
.why-item { display: flex; gap: 14px; }
.why-item .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue-600); margin-top: 8px; flex-shrink: 0; }
.why-item h4 { font-size: 16px; margin-bottom: 4px; }
.why-item p { font-size: 14px; margin: 0; }
@media (max-width: 800px) { .why-grid { grid-template-columns: 1fr; } }

/* Galerie (ancienne, conservée pour d'autres pages) */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.gallery-grid img { border-radius: var(--radius); height: 220px; object-fit: cover; }
@media (max-width: 720px) { .gallery-grid { grid-template-columns: 1fr; } }

/* Slider réalisations */
.slider { position: relative; margin-top: 32px; }
.slider-track {
  display: flex; gap: 20px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}
.slider-track::-webkit-scrollbar { display: none; }
.slide {
  position: relative; flex: 0 0 auto;
  width: 340px;
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow);
}
.slide img {
  width: 340px; height: 240px; object-fit: cover; display: block;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.slide:hover img { transform: scale(1.06); }
.slide::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to top, rgba(4,44,83,0.55) 0%, rgba(4,44,83,0) 45%);
  pointer-events: none;
}
.slide-tag {
  position: absolute; left: 14px; bottom: 14px; z-index: 2;
  background: rgba(4,44,83,0.85); color: #fff;
  font-size: 13px; font-weight: 600;
  padding: 6px 14px; border-radius: 999px;
}
.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 46px; height: 46px; border-radius: 50%;
  background: #fff; border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; color: var(--blue-800); cursor: pointer;
  z-index: 5;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}
.slider-prev { left: -8px; }
.slider-next { right: -8px; }
.slider-arrow:hover {
  background: var(--blue-600); color: #fff;
  transform: translateY(-50%) scale(1.08);
  box-shadow: 0 8px 24px rgba(4,44,83,0.25);
}
.slider-dots { display: flex; gap: 8px; justify-content: center; margin-top: 18px; }
.slider-dots .dot-nav {
  width: 8px; height: 8px; border-radius: 999px;
  background: var(--border); border: none; cursor: pointer; padding: 0;
  transition: width 0.25s ease, background 0.25s ease;
}
.slider-dots .dot-nav.active { width: 24px; background: var(--blue-600); }
@media (max-width: 640px) {
  .slider-arrow { width: 38px; height: 38px; font-size: 18px; }
  .slide, .slide img { width: 260px; }
}

/* Avis */
.reviews-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.stars { color: #f5a623; font-size: 18px; letter-spacing: 1px; }
.reviews-summary {
  display: flex; align-items: center; gap: 10px;
  background: var(--paper); border: 1px solid var(--border); border-radius: 999px;
  padding: 10px 18px; box-shadow: var(--shadow); transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.reviews-summary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(4,44,83,0.12); }
.reviews-summary-score { font-family: var(--font-heading); font-weight: 700; color: var(--blue-900); font-size: 16px; }
.reviews-summary-count { font-size: 13px; color: var(--ink-soft); }
.reviews-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 32px;
}
@media (max-width: 760px) { .reviews-grid { grid-template-columns: 1fr; } }
.review-card {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 24px; box-shadow: var(--shadow);
}
.review-card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-family: var(--font-heading); font-weight: 700; font-size: 17px;
}
.review-card-head strong { display: block; font-size: 15px; color: var(--ink); }
.review-source { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-soft); margin-top: 2px; }
.review-stars { color: #f5a623; font-size: 15px; letter-spacing: 1px; margin-bottom: 10px; }
.review-date { color: var(--ink-soft); font-size: 13px; font-weight: 400; margin-left: 6px; letter-spacing: normal; }
.review-card p { font-size: 14.5px; color: var(--ink-soft); margin: 0; line-height: 1.65; }

/* CTA bandeau */
.cta-band {
  background: var(--blue-800);
  color: #fff;
  text-align: center;
  padding: 56px 24px;
  border-radius: var(--radius-lg);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.85); max-width: 480px; margin: 0 auto 24px; }

/* Zone d'intervention */
.zone-list { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.zone-chip {
  font-size: 13px; padding: 6px 14px; border-radius: 999px;
  background: var(--blue-50); color: var(--blue-800); border: 1px solid var(--blue-100);
}

/* Bandeau de page intérieure */
.page-hero {
  background: linear-gradient(rgba(4,44,83,0.8), rgba(4,44,83,0.8)), url("../assets/img/facade-briques-construction-neuve-montelimar.webp") center/cover no-repeat;
  color: #fff;
  padding: 64px 0 48px;
  text-align: center;
}
.page-hero h1 { color: #fff; font-size: 32px; margin-bottom: 8px; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,0.75); }
.breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb a:hover { color: #fff; }

/* Timeline */
/* Timeline centrale en zigzag */
.timeline { position: relative; margin-top: 56px; padding: 0; border: none; max-width: 900px; margin-left: auto; margin-right: auto; }
.timeline::before {
  content: ""; position: absolute; left: 50%; top: 0; bottom: 0;
  width: 2px; background: var(--blue-100); transform: translateX(-50%);
}
.timeline-item {
  position: relative; width: 50%; padding: 0 44px 64px;
  box-sizing: border-box;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item:nth-child(odd) { left: 0; text-align: right; }
.timeline-item:nth-child(even) { left: 50%; text-align: left; }
.timeline-item::before {
  content: ""; position: absolute; top: 4px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--blue-600); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--blue-100);
  z-index: 1;
}
.timeline-item:nth-child(odd)::before { right: -9px; }
.timeline-item:nth-child(even)::before { left: -9px; }
.timeline-year { font-family: var(--font-heading); font-weight: 700; color: var(--blue-600); font-size: 15px; margin-bottom: 4px; }
.timeline-item h3 { font-size: 18px; margin-bottom: 6px; }
.timeline-item p { font-size: 15px; margin: 0 0 0 auto; }
.timeline-item:nth-child(even) p { margin: 0 auto 0 0; }

@media (max-width: 760px) {
  .timeline::before { left: 12px; }
  .timeline-item, .timeline-item:nth-child(odd), .timeline-item:nth-child(even) {
    width: 100%; left: 0; text-align: left; padding: 0 0 40px 44px;
  }
  .timeline-item p, .timeline-item:nth-child(even) p { margin: 0; max-width: 100%; }
  .timeline-item::before, .timeline-item:nth-child(odd)::before, .timeline-item:nth-child(even)::before {
    left: 3px; right: auto;
  }
}

.history-photo {
  margin: 48px 0 0; padding: 0;
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--border); background: var(--paper-soft);
}
.history-photo img { width: 100%; display: block; }
.history-photo figcaption {
  padding: 14px 20px; font-size: 13px; color: var(--ink-soft);
  font-style: italic; text-align: center;
}

/* Mission / Vision */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 40px; }
@media (max-width: 760px) { .grid-2 { grid-template-columns: 1fr; } }
.card-plain {
  background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px;
}
.card-plain h3 { color: var(--blue-800); margin-bottom: 10px; }
.card-plain p { margin: 0; font-size: 15px; }
/* Étapes de process (légitime : ordre réel d'un chantier) */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
@media (max-width: 860px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .process-grid { grid-template-columns: 1fr; } }
.process-step { background: var(--paper); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px 20px; }
.process-num {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--blue-50); color: var(--blue-800); font-weight: 700; font-family: var(--font-heading);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px; font-size: 15px;
}
.process-step h4 { font-size: 15px; margin-bottom: 6px; }
.process-step p { font-size: 13px; margin: 0; }

/* Bloc service — page dédiée */
.service-hero-img { border-radius: var(--radius-lg); margin: 32px 0; overflow: hidden; }
.service-hero-img img { width: 100%; height: 380px; object-fit: cover; }
.check-list { list-style: none; margin: 20px 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.check-list li { display: flex; gap: 10px; font-size: 15px; color: var(--ink-soft); }
.check-list li::before { content: "\2713"; color: var(--blue-600); font-weight: 700; flex-shrink: 0; }

/* Autres prestations (liens croisés) */
.related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 24px; }
@media (max-width: 860px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .related-grid { grid-template-columns: 1fr; } }
.related-card {
  border: 1px solid var(--border); border-radius: var(--radius); padding: 16px;
  font-size: 14px; font-weight: 500; text-align: center; color: var(--blue-800);
  transition: border-color 0.15s ease;
}
.related-card:hover { border-color: var(--blue-600); }

/* Réalisations — filtres + galerie */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 28px 0; justify-content: center; }
.filter-btn {
  border: 1px solid var(--border); background: var(--paper); border-radius: 999px;
  padding: 8px 16px; font-size: 13px; font-weight: 500; cursor: pointer; color: var(--ink-soft);
}
.filter-btn.active { background: var(--blue-600); color: #fff; border-color: var(--blue-600); }
.realisations-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 860px) { .realisations-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .realisations-grid { grid-template-columns: 1fr; } }
.realisation-card { border-radius: var(--radius-lg); overflow: hidden; position: relative; }
.realisation-card img { height: 220px; object-fit: cover; width: 100%; }
.realisation-card .slide-tag { position: absolute; left: 12px; bottom: 12px; }
.realisation-card.hidden { display: none; }

/* Zone d'intervention */
.zone-list-lg { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.zone-chip-lg {
  font-size: 14px; padding: 10px 18px; border-radius: 999px;
  background: var(--blue-50); color: var(--blue-800); border: 1px solid var(--blue-100); font-weight: 500;
}
.zone-map {
  height: 460px; width: 100%; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow); margin-top: 32px; border: 1px solid var(--border);
  position: relative; z-index: 0; isolation: isolate;
}
@media (max-width: 640px) { .zone-map { height: 320px; } }
.leaflet-popup-content { font-family: var(--font-body); font-size: 14px; }
.leaflet-popup-content strong { color: var(--blue-800); font-family: var(--font-heading); }

/* Formulaire de contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 40px; align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.form-field { margin-bottom: 16px; }
.form-field label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 6px; color: var(--ink); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius);
  font-family: var(--font-body); font-size: 15px; background: var(--paper);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-honeypot { position: absolute; left: -9999px; opacity: 0; }
.contact-info-card { background: var(--paper-soft); border-radius: var(--radius-lg); padding: 28px; }
.contact-info-card h4 { font-size: 15px; margin-bottom: 4px; }
.contact-info-card p { font-size: 14px; margin-bottom: 20px; }
.form-msg { font-size: 14px; margin-top: 12px; }

/* Pages légales */
.legal-content h2 { font-size: 20px; margin-top: 32px; }
.legal-content p, .legal-content li { font-size: 15px; color: var(--ink-soft); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer { background: var(--blue-900); color: rgba(255,255,255,0.75); padding: 56px 0 24px; }
.site-footer h5 { color: #fff; font-family: var(--font-heading); font-size: 15px; margin-bottom: 14px; }
.site-footer a { color: rgba(255,255,255,0.75); font-size: 14px; overflow-wrap: anywhere; }
.site-footer a:hover { color: #fff; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  margin-top: 40px; padding-top: 20px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  font-size: 13px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; } }