.mobile-menu nav .header-btn {
  background: var(--accent);
  color: #fff !important;
  padding: 14px 20px !important;
  border-radius: 4px;
  text-align: center;
  margin-top: 10px;
  border-bottom: none;
}
.mobile-menu-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}
.mobile-menu-btn {
  display: block;
  background: var(--accent);
  color: #fff !important;
  padding: 14px 20px !important;
  border-radius: 8px;
  text-align: center;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  border-bottom: none !important;
  transition: background 0.2s, transform 0.2s;
}
.mobile-menu-btn:hover {
  background: var(--accent-hover);
  color: #fff !important;
  transform: translateY(-1px);
}
.mobile-menu-btn.dark {
  background: var(--dark);
}
.mobile-menu-btn.dark:hover {
  background: #2a2a2a;
}

/* ===== HERO ===== *//* ========================================
   LIGNUS INDUSTRIE - STYLE PRINCIPAL
   Design inspiré : Fonderie Havard
   Couleurs : Indusri Theme
   ======================================== */

:root {
  --primary: #121C22;
  --accent: #E66445;
  --accent-hover: #d45335;
  --light: #E1E6E9;
  --white: #FFFFFF;
  --dark: #17262F;
  --text: #4a5257;
  --shadow: 0 5px 30px rgba(0,0,0,0.08);
  --shadow-header: 0 2px 20px rgba(0,0,0,0.06);
}

* { box-sizing: border-box; }

body {
  font-family: 'Lato', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  overflow-x: hidden;
  margin: 0;
  padding: 0;
}

/* ===== TOP BAR ===== */
.top-bar {
  background: var(--primary);
  color: #e0e1e4;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 3px solid var(--accent);
}
.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar a { color: #fff; text-decoration: none; }
.top-bar a:hover { color: var(--accent); }
.top-bar .fa { margin-right: 6px; color: var(--accent); }
.top-bar-link { color: #ccc !important; }
.top-bar-link:hover { color: var(--accent) !important; }
.top-bar-sep { margin: 0 12px; color: #555; }
.top-bar-phone { color: #ccc; }
.top-bar-social { margin-left: 8px; font-size: 15px; }

/* ===== HEADER ===== */
.header {
  background: #fff;
  padding: 10px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-header);
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 12px;
  flex-shrink: 0;
}
.header-logo-img {
  height: 46px;
  width: auto;
}
.header-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.header-brand-lignus {
  font-size: 22px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 3px;
  text-transform: uppercase;
}
.header-brand-industrie {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 4px;
  text-transform: uppercase;
}
/* HEADER NAVIGATION */
/* ===== NAVIGATION & DROPDOWN ===== */
.header-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}
.header-nav .nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
}
.header-nav .nav-item > a {
  color: var(--dark);
  font-weight: 600;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 7px 11px;
  transition: color 0.2s;
  text-decoration: none;
  white-space: nowrap;
  position: relative;
}
.header-nav .nav-item > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 2px;
  background: var(--accent);
  transition: transform 0.2s;
}
.header-nav .nav-item > a:hover::after,
.header-nav .nav-item > a.active::after {
  transform: translateX(-50%) scaleX(1);
}
.header-nav .nav-item > a:hover,
.header-nav .nav-item > a.active { color: var(--accent); }

/* Flèche dropdown */
.header-nav .nav-item.dropdown > a {
  padding-right: 16px;
}
.nav-item.dropdown > a .dropdown-arrow {
  display: inline-block;
  margin-left: 4px;
  font-size: 10px;
  transition: transform 0.2s;
}
.nav-item.dropdown:hover > a .dropdown-arrow {
  transform: rotate(180deg);
}

/* Menu déroulant */
.header-nav .nav-item .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.12);
  border: 1px solid #eee;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.25s ease;
  z-index: 1500;
  padding: 8px 0;
  margin-top: 4px;
  pointer-events: none;
}
.header-nav .nav-item.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: all;
}
.header-nav .dropdown-item {
  display: block !important;
  padding: 10px 20px !important;
  color: var(--text) !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  text-transform: none !important;
  letter-spacing: 0 !important;
  white-space: nowrap !important;
  border-left: 3px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
  border-bottom: none;
  background: none;
}
.header-nav .dropdown-item:hover {
  color: var(--accent) !important;
  background: #f7f9fb;
  border-left-color: var(--accent);
  padding-left: 26px !important;
}
.header-nav .dropdown-item::after { display: none !important; }

/* Bouton dans la nav */
.header-nav .header-btn {
  background: var(--accent);
  color: #fff !important;
  padding: 9px 18px !important;
  border-radius: 4px;
  font-weight: 700;
  margin-left: 6px;
}
.header-nav .header-btn::after { display: none; }
.header-nav .header-btn:hover { background: var(--accent-hover); }
.header-nav .header-btn.dark { background: var(--dark); }
.header-nav .header-btn.dark:hover { background: #2a2a2a; }

/* ===== DROPDOWN MOBILE ===== */
.mobile-menu .nav-item {
  display: block;
  width: 100%;
  position: relative;
}
.mobile-menu .nav-item > a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #ccc;
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid #2B363D;
  font-size: 15px;
  font-weight: 600;
}
.mobile-menu .dropdown-menu {
  position: static;
  background: transparent;
  box-shadow: none;
  border: none;
  opacity: 1;
  visibility: visible;
  transform: none;
  display: none;
  padding: 0 0 0 16px;
  margin: 0;
  min-width: auto;
  border-radius: 0;
}
.mobile-menu .dropdown-menu.open {
  display: block;
}
.mobile-menu .dropdown-item {
  color: #999 !important;
  padding: 10px 0 !important;
  font-size: 14px !important;
  border-bottom: 1px solid #2B363D;
  display: block;
  text-decoration: none;
}
.mobile-menu .dropdown-item:hover {
  color: var(--accent) !important;
  background: transparent;
  padding-left: 0 !important;
}

/* HAMBURGER */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
  transition: all 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* MOBILE MENU */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
}
.mobile-menu-overlay.open { display: block; }
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
  background: var(--primary);
  z-index: 2001;
  padding: 60px 30px 30px;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}
.mobile-menu.open {
  display: block;
  transform: translateX(0);
}
.mobile-menu-close {
  position: absolute;
  top: 12px;
  right: 20px;
  background: none;
  border: none;
  color: #fff;
  font-size: 36px;
  cursor: pointer;
}
.mobile-menu nav {
  display: flex;
  flex-direction: column;
}
.mobile-menu nav a {
  color: #ccc;
  text-decoration: none;
  padding: 14px 0;
  border-bottom: 1px solid #2B363D;
  font-size: 15px;
  font-weight: 600;
  transition: color 0.2s;
}
.mobile-menu nav a:hover,
.mobile-menu nav a.active { color: var(--accent); }
.mobile-menu nav .header-btn,
.mobile-menu-btn {
  background: var(--accent);
  color: #fff !important;
  padding: 14px 20px !important;
  border-radius: 4px;
  text-align: center;
  margin-top: 10px;
  border-bottom: none;
  display: block;
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  transition: background 0.2s;
}
.mobile-menu-btn:hover { background: var(--accent-hover); color: #fff !important; }
.mobile-menu-btn i { margin-right: 8px; }

/* ===== QUICK TOOLS BAR ===== */
.quick-tools-bar {
  background: var(--primary);
  border-bottom: 1px solid #2B363D;
  padding: 8px 0;
}
.quick-tools-bar .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.quick-tool-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 18px;
  background: var(--accent);
  color: #fff !important;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}
.quick-tool-link:hover {
  background: var(--accent-hover);
  color: #fff !important;
  transform: translateY(-1px);
}
.quick-tool-link.dark {
  background: #2a2a2a;
}
.quick-tool-link.dark:hover {
  background: #1a1a1a;
}
.quick-tool-link i {
  font-size: 14px;
}

/* ===== HERO ===== */
.hero {
  background: var(--primary);
  min-height: 75vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/img/background.jpeg') center/cover no-repeat;
  opacity: 0.18;
}
.hero .container { position: relative; z-index: 2; }
.hero h1 {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 18px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 17px;
  color: #abafb5;
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-badge {
  display: inline-block;
  background: rgba(230,100,69,0.15);
  color: var(--accent);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.btn-cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 15px 32px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  text-decoration: none;
  transition: background 0.3s, transform 0.2s;
  margin-right: 10px;
}
.btn-cta:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.btn-cta .fa { margin-left: 8px; }
.btn-cta-outline {
  display: inline-block;
  border: 2px solid rgba(255,255,255,0.25);
  color: #fff;
  padding: 13px 28px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-cta-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-cta-outline .fa { margin-left: 8px; }

/* ===== SECTIONS ===== */
section { padding: 75px 0; }
.section-title { text-align: center; margin-bottom: 45px; }
.section-title .sub {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.section-title h2 {
  font-size: 34px;
  font-weight: 900;
  color: var(--dark);
  margin: 0;
}
.section-title p {
  color: var(--text);
  font-size: 16px;
  max-width: 520px;
  margin: 10px auto 0;
}

/* ===== SERVICES ===== */
.services { background: var(--light); }
.service-card {
  background: #fff;
  padding: 32px 22px;
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s;
  height: 100%;
  border-bottom: 3px solid transparent;
}
.service-card:hover {
  border-bottom-color: var(--accent);
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.service-card .icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: rgba(230,100,69,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-card .icon svg { display: block; }
.service-card h4 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.service-card p { font-size: 13px; color: var(--text); line-height: 1.7; margin: 0; }

/* ===== ALLIAGES ===== */
.alliages { background: #fff; }
.alliage-item {
  background: var(--light);
  padding: 28px 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: all 0.3s;
  height: 100%;
  text-align: center;
}
.alliage-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.alliage-item .icon {
  font-size: 30px;
  color: var(--accent);
  margin-bottom: 12px;
}
.alliage-item h5 {
  font-size: 17px;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}
.alliage-item p {
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
  margin: 0;
}
.alliage-item .alliage-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.4s ease, margin 0.3s ease;
  text-align: left;
  margin-top: 0;
}
.alliage-item:hover .alliage-list {
  max-height: 400px;
  opacity: 1;
  margin-top: 12px;
}
.alliage-list li {
  padding: 5px 0 5px 22px;
  position: relative;
  font-size: 13px;
  color: var(--text);
  border-bottom: 1px solid #e0e0e0;
}
.alliage-list li:last-child { border-bottom: none; }
.alliage-list li::before {
  content: "\203A";
  position: absolute;
  left: 6px;
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
}

/* ===== ABOUT ===== */
.about { background: #fff; }
.about .about-img {
  min-height: 360px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, #0a1418 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 68px;
  color: var(--accent);
}
.about h3 { font-size: 28px; font-weight: 900; color: var(--dark); margin-bottom: 18px; }
.about p { line-height: 1.7; color: var(--text); margin-bottom: 14px; }
.about .signature {
  font-style: italic;
  color: var(--accent);
  font-size: 14px;
  padding: 14px 0;
  border-top: 2px solid var(--light);
  border-bottom: 2px solid var(--light);
  margin: 18px 0;
}
.about .signature .fa { color: var(--accent); margin: 0 6px; }
.btn-primary-sm {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 12px 26px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 4px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: background 0.3s;
}
.btn-primary-sm:hover { background: var(--accent-hover); color: #fff; }
.btn-primary-sm .fa { margin-left: 6px; }

/* ===== CHIFFRES ===== */
.chiffres {
  background: var(--primary);
  padding: 50px 0;
}
.chiffre-item { text-align: center; }
.chiffre-item .number {
  font-size: 44px;
  font-weight: 900;
  color: var(--accent);
  line-height: 1;
}
.chiffre-item .label {
  color: #abafb5;
  font-size: 14px;
  font-weight: 600;
  margin-top: 6px;
}

/* ===== SECTEURS ===== */
.secteurs { background: var(--light); }
.secteur-card {
  background: #fff;
  padding: 28px 22px;
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s;
  height: 100%;
  border-bottom: 3px solid transparent;
}
.secteur-card:hover {
  border-bottom-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.secteur-card .icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  background: rgba(230,100,69,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.secteur-card .icon svg { display: block; }
.secteur-card h5 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.secteur-card p { font-size: 13px; color: var(--text); line-height: 1.6; margin: 0; }

/* ===== CALC CTA ===== */
.calc-cta {
  background: linear-gradient(135deg, var(--primary) 0%, #0a1418 100%);
  padding: 60px 0;
}
.calc-cta h2 { color: #fff; font-size: 32px; font-weight: 900; }
.calc-cta p { color: #abafb5; font-size: 15px; }
.calc-card {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  text-align: center;
  max-width: 380px;
  margin: 0 auto;
  transition: all 0.3s;
  display: block;
  text-decoration: none !important;
}
.calc-card:hover { transform: translateY(-4px); box-shadow: 0 15px 50px rgba(0,0,0,0.3); }
.calc-card .icon { font-size: 44px; color: var(--accent); margin-bottom: 10px; }
.calc-card h4 { font-size: 20px; font-weight: 800; color: var(--dark); }
.calc-card p { color: var(--text); font-size: 13px; margin-bottom: 16px; }
.btn-small {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 11px 28px;
  font-weight: 700;
  border-radius: 4px;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 12px;
  transition: background 0.3s;
}
.btn-small:hover { background: var(--accent-hover); }
.btn-small .fa { margin-left: 6px; }

/* ===== CONTACT SECTION ===== */
.contact-section { background: var(--light); padding: 75px 0; }
.contact-section-title {
  color: var(--accent);
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.contact-info h3 { font-size: 26px; font-weight: 800; color: var(--dark); margin-bottom: 10px; }
.contact-section-desc { color: var(--text); font-size: 15px; margin-bottom: 22px; }
.ci-item {
  margin-bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ci-item .fa {
  color: var(--accent);
  font-size: 15px;
  width: 22px;
  text-align: center;
  margin-top: 3px;
}
.ci-item strong { display: block; color: var(--dark); font-size: 14px; width: 100%; margin-left: 30px; margin-top: -2px; }
.ci-item span { color: var(--text); font-size: 14px; width: 100%; margin-left: 30px; line-height: 1.5; }
.contact-form-box {
  background: #fff;
  padding: 32px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.contact-form-box .form-control {
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 12px 16px;
  font-size: 14px;
  font-family: inherit;
  width: 100%;
  transition: border-color 0.2s;
}
.contact-form-box .form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(230,100,69,0.1);
}
.contact-form-box textarea { resize: vertical; }
.btn-submit {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 13px 32px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}
.btn-submit:hover { background: var(--accent-hover); }
.btn-submit .fa { margin-left: 8px; }

/* ===== PAGE HEADER ===== */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, #1a2a33 100%);
  padding: 50px 0 40px;
  margin: 0;
  border: none;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/img/background.jpeg') center/cover no-repeat;
  opacity: 0.06;
  pointer-events: none;
}
.page-header .container { position: relative; z-index: 2; }
.page-header h1 {
  font-size: 34px;
  font-weight: 900;
  color: #fff;
  margin: 0 0 6px;
}
.page-header h1 i { color: var(--accent); margin-right: 8px; }
.page-header .breadcrumb {
  background: transparent;
  padding: 0;
  margin: 0 0 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
.page-header .breadcrumb a { color: rgba(255,255,255,0.7); text-decoration: none; }
.page-header .breadcrumb a:hover { color: var(--accent); }
.page-header-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  max-width: 640px;
  line-height: 1.6;
  margin-top: 10px;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--primary);
  color: #e0e1e4;
  padding: 45px 0 25px;
  font-size: 14px;
}
.footer .logo-foot {
  display: inline-block;
  text-decoration: none;
}
.footer-logo-img { height: 38px; width: auto; opacity: 0.9; }
.footer-desc { color: #abafb5; font-size: 13px; line-height: 1.7; margin-top: 12px; }
.footer h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer .links { display: flex; flex-direction: column; }
.footer .links a { color: #abafb5; text-decoration: none; padding: 4px 0; font-size: 13px; transition: color 0.2s; }
.footer .links a:hover { color: var(--accent); }
.contact-info-f { font-size: 13px; line-height: 1.8; color: #abafb5; }
.contact-info-f .fa { color: var(--accent); width: 18px; margin-right: 4px; }
.footer .copyright {
  border-top: 1px solid #2B363D;
  padding-top: 18px;
  margin-top: 25px;
  text-align: center;
  color: #abafb5;
  font-size: 13px;
}

/* ===== RESPONSIVE ===== */

/* Tablette : menu devient hamburger plus tôt pour éviter overflow */
@media (max-width: 1100px) {
  .header-nav { display: none; }
  .hamburger { display: flex; }
}

/* Petit écran / tablette */
@media (max-width: 991px) {
  .hero h1 { font-size: 34px; }
  .section-title h2 { font-size: 26px; }
  .chiffre-item .number { font-size: 34px; }
  .about h3 { font-size: 22px; }
  .about .about-img { min-height: 280px; }
}

/* Mobile */
@media (max-width: 768px) {
  .hero { min-height: 65vh; }
  .hero h1 { font-size: 28px; }
  .hero p { font-size: 15px; }
  section { padding: 50px 0; }
  .section-title h2 { font-size: 22px; }
  .btn-cta { padding: 13px 22px; font-size: 13px; margin-right: 0; margin-bottom: 10px; display: block; text-align: center; }
  .btn-cta-outline { padding: 11px 20px; font-size: 13px; display: block; text-align: center; }
  .calc-card { padding: 22px; }
  .contact-form-box { padding: 24px; }
  .header-logo-img { height: 34px; }
  .header-brand-lignus { font-size: 18px; }
  .header-brand-industrie { font-size: 10px; letter-spacing: 3px; }
  .header { padding: 8px 0; }
  .calc-cta h2 { font-size: 24px; }
  .calc-cta { padding: 40px 0; }
  .chiffres { padding: 35px 0; }
}

/* Très petits écrans */
@media (max-width: 576px) {
  .hero h1 { font-size: 24px; }
  .hero p { font-size: 14px; }
  .top-bar-inner { flex-direction: column; gap: 4px; }
  .top-bar-left, .top-bar-right { font-size: 12px; }
  .chiffre-item .number { font-size: 26px; }
  .chiffre-item .label { font-size: 12px; }
  .ci-item strong { font-size: 13px; }
  .ci-item span { font-size: 13px; }
  .hero-badge { font-size: 11px; }
  .section-title { margin-bottom: 30px; }
  .section-title h2 { font-size: 20px; }
}

/* ===== RESPONSIVE PRODUCT CARDS ===== */
@media (max-width: 768px) {
  .product-card { padding: 20px 16px; }
  .product-card-header h3 { font-size: 17px; }
  .product-desc { font-size: 13px; }
  .product-list li { font-size: 12px; padding: 4px 0 4px 20px; }
  .page-desc { font-size: 14px; }
}
@media (max-width: 576px) {
  .product-card { margin-bottom: 16px; }
  .page-header h1 { font-size: 22px; }
}

/* ===== CONTACT FORM ===== */
.contact-form-box {
  background: #fff;
  border: 1px solid var(--light);
  border-radius: 12px;
  padding: 32px 30px;
  box-shadow: var(--shadow);
}
.contact-form-box .label {
  display: block;
  font-weight: 700;
  font-size: 14px;
  color: var(--dark);
  margin-bottom: 6px;
}
.contact-form-box .label .required {
  color: #e53935;
  font-weight: 800;
  font-size: 16px;
  margin-left: 2px;
}
.contact-form-box .label .required {
  color: var(--accent);
  font-size: 16px;
  margin-left: 1px;
}
.contact-form-box .form-control {
  border: 2px solid #dde1e3;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 15px;
  color: var(--dark);
  background: #fafbfc;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form-box .form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(230,100,69,0.12);
  background: #fff;
  outline: none;
}
.contact-form-box .form-control::placeholder {
  color: #aab3b8;
  font-size: 14px;
}
.btn-submit {
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  padding: 14px 32px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  width: 100%;
}
.btn-submit:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
}
.btn-submit:active {
  transform: translateY(0);
}
.alert-success {
  background: #e8f5e9;
  color: #2e7d32;
  padding: 18px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-weight: 500;
}
.alert-error {
  background: #fbe9e7;
  color: #c62828;
  padding: 18px 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-weight: 500;
}
.alert-security {
  margin-top: 14px;
  font-size: 13px;
  color: #888;
  text-align: center;
}
.contact-info {
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  padding: 28px 24px;
}
.contact-info .ci-item strong,
.contact-info .ci-item span {
  color: #fff;
}
.contact-info h3 {
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(255,255,255,0.12);
}
.ci-item {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.ci-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.contact-info a { color: var(--accent); text-decoration: underline; }
.contact-info a:hover { color: #ffb8a0; }
.ci-item i {
  width: 20px;
  font-size: 16px;
  color: var(--accent);
  margin-top: 2px;
}
.ci-item strong {
  display: block;
  width: calc(100% - 30px);
  font-weight: 700;
  font-size: 14px;
  color: #fff;
}
.ci-item span {
  display: block;
  width: calc(100% - 30px);
  font-size: 14px;
  opacity: 0.85;
  line-height: 1.5;
  color: #fff;
}
.contact-text {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text);
}
.map-placeholder {
  background: var(--light);
  border-radius: 12px;
  padding: 60px 20px;
  text-align: center;
  color: var(--text);
  font-size: 16px;
}
.map-placeholder i {
  display: block;
  font-size: 48px;
  color: var(--accent);
  margin-bottom: 14px;
}
@media (max-width: 768px) {
  .contact-form-box { padding: 24px 18px; }
  .contact-info { margin-top: 24px; }
}

.required {
  color: #e53935;
  font-size: 16px;
  margin-left: 2px;
}