/* ==========================================
   VGP NANTES - Feuille de style principale
   Design industriel moderne - Variant Nantes
   ========================================== */

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

:root {
  --orange: #e85d1f;
  --orange-dark: #c44a13;
  --bleu: #1a3a52;
  --bleu-clair: #2c5170;
  --gris-fonce: #2b2b2b;
  --gris: #5a5a5a;
  --gris-clair: #f4f4f4;
  --blanc: #ffffff;
  --jaune: #f5b800;
  --ombre: 0 4px 12px rgba(0,0,0,0.08);
  --ombre-hover: 0 8px 24px rgba(0,0,0,0.15);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--gris-fonce);
  line-height: 1.65;
  background: var(--blanc);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--orange); text-decoration: none; transition: color .2s; }
a:hover { color: var(--orange-dark); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ====== TOPBAR ====== */
.topbar {
  background: var(--gris-fonce);
  color: var(--blanc);
  font-size: 0.88rem;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }
.topbar a { color: var(--blanc); }
.topbar a:hover { color: var(--jaune); }
.topbar-left span { margin-right: 20px; }

/* ====== HEADER ====== */
.header {
  background: var(--blanc);
  box-shadow: var(--ombre);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
  flex-wrap: wrap;
  gap: 15px;
}
.logo {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--bleu);
  letter-spacing: -0.5px;
}
.logo span { color: var(--orange); }
.logo small { display: block; font-size: 0.7rem; color: var(--gris); font-weight: 400; letter-spacing: 1px; text-transform: uppercase; }

.nav ul {
  list-style: none;
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
}
.nav a {
  color: var(--bleu);
  font-weight: 600;
  padding: 10px 16px;
  border-radius: 4px;
  transition: all .2s;
  display: inline-block;
}
.nav a:hover, .nav a.active {
  background: var(--orange);
  color: var(--blanc);
}

.btn-tel-header {
  background: var(--orange);
  color: var(--blanc) !important;
  padding: 10px 20px !important;
  border-radius: 30px !important;
  font-weight: 700 !important;
}
.btn-tel-header:hover { background: var(--orange-dark) !important; }

/* ====== BOUTONS ====== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.95rem;
  transition: all .25s;
  border: none;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--orange); color: var(--blanc); }
.btn-primary:hover { background: var(--orange-dark); color: var(--blanc); transform: translateY(-2px); box-shadow: var(--ombre-hover); }
.btn-secondary { background: transparent; color: var(--blanc); border: 2px solid var(--blanc); }
.btn-secondary:hover { background: var(--blanc); color: var(--bleu); }
.btn-dark { background: var(--bleu); color: var(--blanc); }
.btn-dark:hover { background: var(--bleu-clair); color: var(--blanc); }

/* ====== HERO ====== */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  color: var(--blanc);
  background: linear-gradient(rgba(26,58,82,0.85), rgba(26,58,82,0.75)),
              url('https://images.unsplash.com/photo-1581094794329-c8112a89af12?w=1600&q=80') center/cover no-repeat;
  padding: 80px 0;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 800px;
}
.hero h1 span { color: var(--orange); }
.hero p.lead {
  font-size: 1.2rem;
  max-width: 700px;
  margin-bottom: 35px;
  opacity: 0.95;
}
.hero-buttons { display: flex; gap: 15px; flex-wrap: wrap; }

.hero-badge {
  display: inline-block;
  background: var(--orange);
  color: var(--blanc);
  padding: 6px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

/* ====== SECTIONS ====== */
section { padding: 80px 0; }
.section-alt { background: var(--gris-clair); }

.section-title {
  text-align: center;
  margin-bottom: 50px;
}
.section-title h2 {
  font-size: 2.3rem;
  color: var(--bleu);
  margin-bottom: 15px;
  font-weight: 800;
}
.section-title h2 span { color: var(--orange); }
.section-title p {
  color: var(--gris);
  font-size: 1.05rem;
  max-width: 700px;
  margin: 0 auto;
}
.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--orange);
  margin: 20px auto 0;
}

/* ====== GRID SERVICES ====== */
.grid-services {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}
.service-card {
  background: var(--blanc);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--ombre);
  transition: all .3s;
  border-top: 4px solid var(--orange);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--ombre-hover); }
.service-card img { width: 100%; height: 200px; object-fit: cover; }
.service-card-body { padding: 24px; }
.service-card h3 { color: var(--bleu); margin-bottom: 12px; font-size: 1.25rem; }
.service-card p { color: var(--gris); font-size: 0.95rem; margin-bottom: 15px; }
.service-card a { font-weight: 700; }

/* ====== POINTS FORTS ====== */
.atouts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
}
.atout-item {
  background: var(--blanc);
  padding: 30px 25px;
  border-radius: 8px;
  text-align: center;
  box-shadow: var(--ombre);
  transition: transform .25s;
}
.atout-item:hover { transform: translateY(-4px); }
.atout-icon {
  width: 70px;
  height: 70px;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--orange), var(--orange-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--blanc);
  font-weight: 700;
}
.atout-item h4 { color: var(--bleu); margin-bottom: 10px; font-size: 1.1rem; }
.atout-item p { color: var(--gris); font-size: 0.92rem; }

/* ====== ZONES ====== */
.zones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 30px;
}
.zone-item {
  background: var(--blanc);
  padding: 14px 18px;
  border-left: 3px solid var(--orange);
  font-weight: 600;
  color: var(--bleu);
  font-size: 0.95rem;
  transition: all .2s;
}
.zone-item:hover { background: var(--orange); color: var(--blanc); border-left-color: var(--bleu); }

/* ====== FAQ ====== */
.faq-item {
  background: var(--blanc);
  border-radius: 6px;
  margin-bottom: 12px;
  box-shadow: var(--ombre);
  overflow: hidden;
}
.faq-item summary {
  padding: 18px 24px;
  cursor: pointer;
  font-weight: 700;
  color: var(--bleu);
  background: var(--blanc);
  list-style: none;
  position: relative;
  padding-right: 50px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--orange);
  font-weight: 400;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item .faq-content { padding: 0 24px 22px; color: var(--gris); }

/* ====== CTA BAND ====== */
.cta-band {
  background: linear-gradient(135deg, var(--bleu), var(--bleu-clair));
  color: var(--blanc);
  padding: 60px 0;
  text-align: center;
}
.cta-band h2 { font-size: 2rem; margin-bottom: 15px; }
.cta-band p { font-size: 1.1rem; margin-bottom: 30px; opacity: 0.95; }
.cta-band .btn { font-size: 1.05rem; padding: 16px 36px; }

/* ====== FORMULAIRE ====== */
.formulaire {
  background: var(--blanc);
  padding: 40px;
  border-radius: 10px;
  box-shadow: var(--ombre);
  max-width: 700px;
  margin: 0 auto;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--bleu);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 5px;
  font-family: inherit;
  font-size: 1rem;
  transition: border .2s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--orange);
}
.form-group textarea { min-height: 130px; resize: vertical; }
.form-group .required { color: var(--orange); }

/* ====== CONTACT INFOS ====== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
}
.contact-info {
  background: var(--bleu);
  color: var(--blanc);
  padding: 40px 35px;
  border-radius: 10px;
}
.contact-info h3 { margin-bottom: 25px; font-size: 1.4rem; }
.contact-info-item {
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-item strong {
  display: block;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
  color: var(--orange);
  margin-bottom: 6px;
}
.contact-info-item a, .contact-info-item span { color: var(--blanc); font-size: 1.05rem; }
.contact-info-item a:hover { color: var(--jaune); }

/* ====== TÉMOIGNAGES ====== */
.temoignages {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
}
.temoignage {
  background: var(--blanc);
  padding: 30px;
  border-radius: 8px;
  box-shadow: var(--ombre);
  border-left: 4px solid var(--orange);
}
.temoignage p { font-style: italic; color: var(--gris-fonce); margin-bottom: 18px; }
.temoignage .author { font-weight: 700; color: var(--bleu); }
.temoignage .role { color: var(--gris); font-size: 0.88rem; }
.stars { color: var(--jaune); margin-bottom: 12px; letter-spacing: 2px; }

/* ====== CONTENU PROSE ====== */
.prose h2 { color: var(--bleu); margin: 35px 0 18px; font-size: 1.8rem; }
.prose h3 { color: var(--bleu-clair); margin: 25px 0 12px; font-size: 1.3rem; }
.prose p { margin-bottom: 15px; color: var(--gris-fonce); }
.prose ul { margin: 15px 0 20px 25px; }
.prose ul li { margin-bottom: 8px; }
.prose strong { color: var(--bleu); }

/* ====== TWO COLUMNS ====== */
.two-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}
.two-cols img { border-radius: 10px; box-shadow: var(--ombre); }

/* ====== FOOTER ====== */
.footer {
  background: var(--gris-fonce);
  color: #cccccc;
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer h4 {
  color: var(--blanc);
  margin-bottom: 18px;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.footer h4::after {
  content: '';
  display: block;
  width: 40px;
  height: 3px;
  background: var(--orange);
  margin-top: 8px;
}
.footer ul { list-style: none; }
.footer ul li { margin-bottom: 8px; }
.footer a { color: #cccccc; }
.footer a:hover { color: var(--orange); }
.footer .footer-logo { color: var(--blanc); font-size: 1.5rem; font-weight: 800; margin-bottom: 14px; }
.footer .footer-logo span { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid #444;
  padding: 20px 0;
  text-align: center;
  font-size: 0.88rem;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 900px) {
  .hero h1 { font-size: 2.1rem; }
  .hero p.lead { font-size: 1rem; }
  .section-title h2 { font-size: 1.8rem; }
  .two-cols { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav ul { gap: 0; justify-content: center; width: 100%; }
  .nav a { padding: 8px 12px; font-size: 0.9rem; }
  .header-inner { justify-content: center; text-align: center; }
}
@media (max-width: 560px) {
  section { padding: 55px 0; }
  .hero { padding: 60px 0; min-height: auto; }
  .hero h1 { font-size: 1.7rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .formulaire { padding: 25px; }
  .topbar { font-size: 0.8rem; text-align: center; }
  .topbar .container { justify-content: center; }
}