/* ==========================================================================
   PLEXITECH.CA — Refonte One-Pager Ultra-SEO
   Thème : Cristal d'Acrylique (Poli-Dépoli), Précision Laser & Bleu Pétrole
   ========================================================================== */

:root {
  /* Couleurs de marque inspirées du logo officiel Plexitech */
  --bg-deep: #06131c;
  --bg-dark: #0a1e2c;
  --bg-surface: #0f293a;
  --bg-card: rgba(16, 43, 61, 0.65);
  --bg-card-hover: rgba(22, 58, 82, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-strong: rgba(12, 32, 46, 0.88);

  --primary: #2596be;
  --primary-light: #38bdf8;
  --primary-glow: rgba(56, 189, 248, 0.35);
  --primary-dark: #16698a;
  --accent-laser: #f59e0b;
  --accent-laser-glow: rgba(245, 158, 11, 0.3);

  --text-main: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --border-acrylic: rgba(148, 219, 248, 0.18);
  --border-acrylic-bright: rgba(56, 189, 248, 0.48);
  --border-highlight: rgba(56, 189, 248, 0.48);
  --bg-panel-solid: #0a1e2c;

  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 8px 32px rgba(37, 150, 190, 0.22);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;

  --container-max: 1280px;
  --header-height: 82px;
  --transition: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 15% 12%, rgba(37, 150, 190, 0.16) 0%, transparent 40%),
    radial-gradient(circle at 85% 28%, rgba(56, 189, 248, 0.1) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(22, 105, 138, 0.14) 0%, transparent 50%);
  background-attachment: fixed;
}

h1, h2, h3, h4, .font-heading {
  font-family: 'Outfit', 'Inter', sans-serif;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: #ffffff;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover {
  color: #ffffff;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--primary-light);
  color: var(--bg-deep);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 9999;
}
.skip-link:focus {
  top: 1rem;
}

/* ==========================================================================
   Top Bar (Coordonnées rapides & Local SEO)
   ========================================================================== */
.topbar {
  background: rgba(4, 12, 18, 0.92);
  border-bottom: 1px solid var(--border-acrylic);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  color: var(--text-secondary);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-secondary);
}

.topbar-item svg {
  width: 15px;
  height: 15px;
  color: var(--primary-light);
  flex-shrink: 0;
}

.topbar-item a {
  color: var(--text-secondary);
  font-weight: 500;
}

.topbar-item a:hover {
  color: var(--primary-light);
}

.topbar-badge {
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: var(--primary-light);
  padding: 0.15rem 0.65rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.78rem;
}

/* ==========================================================================
   Header, Navigation Sticky, Méga-Menu & Tiroir Mobile/Tablette
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--bg-glass-strong);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border-acrylic);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.28);
  transition: background var(--transition), box-shadow var(--transition);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  min-width: 0;
}

.brand-logo-wrap {
  background: rgba(255, 255, 255, 0.96);
  padding: 0.32rem 0.68rem;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.25), inset 0 0 0 1px rgba(255, 255, 255, 0.6);
  display: flex;
  align-items: center;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.brand:hover .brand-logo-wrap {
  transform: translateY(-2px);
}

.brand-logo {
  height: 40px;
  width: auto;
}

.brand-tagline {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-slogan {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  color: #ffffff;
  letter-spacing: -0.01em;
  line-height: 1.2;
  white-space: nowrap;
}

.brand-sub {
  font-size: 0.66rem;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.2rem;
  flex-wrap: nowrap;
}

.nav-item {
  position: relative;
  flex-shrink: 0;
}

.nav-item.has-mega {
  position: static;
}

.nav-link {
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.5rem 0.72rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: none;
  cursor: pointer;
  line-height: 1.2;
}

.nav-link:hover,
.nav-link.active,
.has-mega:hover .mega-trigger,
.has-mega.open .mega-trigger,
.has-mega.mega-open .mega-trigger {
  color: #ffffff;
  background: rgba(56, 189, 248, 0.14);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 0.72rem;
  right: 0.72rem;
  height: 2px;
  background: var(--primary-light);
  border-radius: 2px;
}

.chevron-icon {
  transition: transform var(--transition);
  color: var(--primary-light);
  flex-shrink: 0;
}

.has-mega:hover .chevron-icon,
.has-mega.open .chevron-icon,
.has-mega.mega-open .chevron-icon {
  transform: rotate(180deg);
}

/* Méga-Menu 3 Colonnes — Ancré proprement sous le header */
.mega-panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  width: min(1060px, calc(100vw - 2rem));
  background: rgba(8, 24, 36, 0.98);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--border-acrylic-bright);
  border-radius: var(--radius-lg);
  padding: 1.65rem;
  box-shadow: 0 28px 65px rgba(0, 0, 0, 0.65), 0 0 35px rgba(37, 150, 190, 0.22);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  z-index: 1200;
}

/* Pont invisible pour garder le survol fluide */
.mega-panel::before {
  content: '';
  position: absolute;
  top: -16px;
  left: 0;
  right: 0;
  height: 16px;
}

.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel,
.has-mega.open .mega-panel,
.has-mega.mega-open .mega-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.mega-grid {
  display: grid;
  grid-template-columns: 1.15fr 1.05fr 0.85fr;
  gap: 1.5rem;
}

.mega-col-title {
  font-family: 'Outfit', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-light);
  padding-bottom: 0.6rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-acrylic);
}

.mega-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mega-link {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition);
  color: var(--text-main);
}

.mega-link:hover {
  background: rgba(56, 189, 248, 0.13);
  transform: translateX(3px);
}

.mega-icon {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--border-acrylic);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.mega-link strong {
  display: block;
  font-size: 0.9rem;
  color: #ffffff;
  line-height: 1.25;
  margin-bottom: 0.12rem;
}

.mega-link span {
  display: block;
  font-size: 0.77rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.mega-col-highlight {
  background: linear-gradient(155deg, rgba(37, 150, 190, 0.16), rgba(10, 30, 44, 0.65));
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mega-highlight-text {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 0.85rem;
}

.mega-doc-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.mega-pill-link {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.83rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-acrylic);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.mega-pill-link:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: var(--primary-light);
}

.mega-cta-box {
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-acrylic);
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--border-acrylic-bright);
  color: #ffffff;
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition);
}

.mobile-toggle:hover {
  background: var(--primary);
}

/* Tiroir Mobile & Tablette (Slide-Over Drawer) */
.mobile-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(3, 10, 16, 0.75);
  backdrop-filter: blur(6px);
  z-index: 1900;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.28s ease;
}

.mobile-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(400px, 90vw);
  background: #071722;
  border-left: 1px solid var(--border-acrylic-bright);
  box-shadow: -16px 0 48px rgba(0, 0, 0, 0.65);
  z-index: 1950;
  display: flex;
  flex-direction: column;
  transform: translateX(105%);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer.open {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-acrylic);
  background: rgba(12, 32, 46, 0.9);
}

.mobile-drawer-close {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-acrylic);
  color: #ffffff;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.95rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: #ffffff;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.98rem;
}

.mobile-nav-link:hover {
  background: rgba(56, 189, 248, 0.16);
  border-color: var(--primary-light);
}

.mobile-drawer-section {
  background: rgba(16, 43, 61, 0.45);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  padding: 0.95rem;
}

.mobile-drawer-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--primary-light);
  margin-bottom: 0.65rem;
}

.mobile-cat-grid {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mobile-cat-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
}

.mobile-cat-item:hover {
  background: rgba(56, 189, 248, 0.15);
  color: #ffffff;
}

.mobile-drawer-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-acrylic);
  background: rgba(6, 19, 28, 0.95);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.96rem;
  padding: 0.78rem 1.45rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 55%, var(--primary-dark) 100%);
  color: #ffffff;
  box-shadow: 0 6px 22px rgba(37, 150, 190, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(56, 189, 248, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

.btn-acrylic {
  background: rgba(255, 255, 255, 0.07);
  color: #ffffff;
  border: 1px solid var(--border-acrylic-bright);
  backdrop-filter: blur(10px);
}

.btn-acrylic:hover {
  background: rgba(56, 189, 248, 0.18);
  border-color: var(--primary-light);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  padding: 4.5rem 0 5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border-acrylic);
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(125deg, rgba(6, 19, 28, 0.94) 15%, rgba(10, 30, 44, 0.82) 55%, rgba(15, 41, 58, 0.92) 100%),
    url('../images/Header.jpg') center/cover no-repeat;
  z-index: -2;
}

/* Laser beam subtle decorative line */
.hero-laser-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--primary-light) 35%, #ffffff 50%, var(--primary-light) 65%, transparent 100%);
  opacity: 0.65;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--border-acrylic-bright);
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.35rem;
  box-shadow: var(--shadow-glow);
}

.hero-eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-light);
  box-shadow: 0 0 10px var(--primary-light);
}

.hero-title {
  font-size: clamp(2.15rem, 4vw, 3.45rem);
  font-weight: 800;
  margin-bottom: 1.1rem;
  line-height: 1.12;
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, #ffffff 0%, #7dd3fc 50%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-slogan {
  font-family: 'Outfit', sans-serif;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 1.15rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.hero-slogan::before {
  content: '';
  width: 28px;
  height: 3px;
  background: var(--primary-light);
  border-radius: 2px;
  display: inline-block;
}

.hero-lead {
  font-size: 1.08rem;
  color: var(--text-secondary);
  margin-bottom: 1.85rem;
  max-width: 640px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-acrylic);
}

.stat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-acrylic);
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}

.stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.65rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 0.2rem;
}

.stat-value span {
  color: var(--primary-light);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Hero Interactive Diaporama (Souvenir du diapo_accueil de l'ancien site) */
.hero-showcase {
  position: relative;
}

.showcase-frame {
  position: relative;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border-acrylic-bright);
  border-radius: var(--radius-xl);
  padding: 1rem;
  box-shadow: var(--shadow-lg), 0 0 40px rgba(37, 150, 190, 0.25);
  backdrop-filter: blur(16px);
}

/* Acrylic corner rivets */
.showcase-rivet {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #ffffff, #64748b);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  z-index: 5;
}
.showcase-rivet.tl { top: 14px; left: 14px; }
.showcase-rivet.tr { top: 14px; right: 14px; }
.showcase-rivet.bl { bottom: 14px; left: 14px; }
.showcase-rivet.br { bottom: 14px; right: 14px; }

.carousel-viewport {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #040d14;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s ease, transform 0.6s ease;
  transform: scale(1.03);
  pointer-events: none;
  cursor: zoom-in;
}

.carousel-slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.5rem 1.35rem 1.15rem;
  background: linear-gradient(to top, rgba(4, 13, 20, 0.95) 0%, rgba(4, 13, 20, 0.65) 60%, transparent 100%);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem;
}

.carousel-caption-tag {
  display: inline-block;
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--primary-light);
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.carousel-caption-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.85rem;
  padding: 0 0.35rem;
}

.carousel-dots {
  display: flex;
  gap: 0.45rem;
}

.carousel-dot {
  width: 26px;
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.carousel-dot.active {
  background: var(--primary-light);
  width: 38px;
}

.carousel-arrows {
  display: flex;
  gap: 0.45rem;
}

.carousel-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-acrylic);
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
}

.carousel-btn:hover {
  background: var(--primary);
  border-color: var(--primary-light);
}

/* ==========================================================================
   Section Globals
   ========================================================================== */
.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-alt {
  background: rgba(10, 30, 44, 0.55);
  border-top: 1px solid var(--border-acrylic);
  border-bottom: 1px solid var(--border-acrylic);
}

.section-header {
  max-width: 780px;
  margin: 0 auto 3.5rem;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: var(--primary-light);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.9rem;
}

.section-title {
  font-size: clamp(1.85rem, 3.2vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.06rem;
}

/* ==========================================================================
   Section À Propos, Mission & Vision ("Le Plexicologue")
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: stretch;
}

.acrylic-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}

.acrylic-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-light), var(--primary), transparent);
}

.mission-quote {
  margin-top: 1.5rem;
  padding: 1.4rem 1.6rem;
  border-left: 4px solid var(--primary-light);
  background: rgba(56, 189, 248, 0.08);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.mission-quote p {
  font-size: 1.04rem;
  color: #ffffff;
  font-style: italic;
}

.mission-quote strong {
  color: var(--primary-light);
  font-style: normal;
}

.founder-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
}

.business-card-preview {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 0.75rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  border: 2px solid var(--border-acrylic-bright);
  cursor: zoom-in;
  transition: transform var(--transition);
}

.business-card-preview:hover {
  transform: scale(1.02);
}

.business-card-preview img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
}

.pillars-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}

.pillar-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.pillar-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.pillar-icon svg {
  width: 20px;
  height: 20px;
}

.pillar-item h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.pillar-item p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ==========================================================================
   Section Services & Vente de Matériel
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-acrylic-bright);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.22), rgba(37, 150, 190, 0.08));
  border: 1px solid var(--border-acrylic-bright);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.35rem;
}

.service-icon svg {
  width: 26px;
  height: 26px;
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.96rem;
  margin-bottom: 1rem;
}

.service-bullets {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.service-bullets li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.service-bullets li::before {
  content: '▹';
  color: var(--primary-light);
  font-weight: bold;
}

/* Materials Banner / Matrix */
.materials-box {
  margin-top: 3rem;
  background: linear-gradient(135deg, rgba(16, 43, 61, 0.9), rgba(9, 26, 38, 0.95));
  border: 1px solid var(--border-acrylic-bright);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-glow);
}

.materials-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.materials-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.material-chip {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-acrylic);
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition);
}

.material-chip:hover {
  border-color: var(--primary-light);
  background: rgba(56, 189, 248, 0.15);
  transform: translateY(-2px);
}

.material-chip span.chip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-light);
}

/* ==========================================================================
   Section Produits & Réalisations (5 Catégories + Filtre + Galerie Lightbox)
   ========================================================================== */
.categories-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.1rem;
  margin-bottom: 2.75rem;
}

.cat-summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  transition: all var(--transition);
  cursor: pointer;
  text-align: left;
}

.cat-summary-card:hover,
.cat-summary-card.active {
  border-color: var(--primary-light);
  background: rgba(37, 150, 190, 0.18);
  transform: translateY(-3px);
}

.cat-summary-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
}

.cat-summary-count {
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.18);
  color: var(--primary-light);
}

.cat-summary-card h3 {
  font-size: 1.06rem;
  margin-bottom: 0.5rem;
}

.cat-summary-card ul {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.cat-summary-card li {
  font-size: 0.8rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 0.85rem;
}

.cat-summary-card li::before {
  content: '•';
  color: var(--primary-light);
  position: absolute;
  left: 0;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.25rem;
}

.filter-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-acrylic);
  color: var(--text-secondary);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.filter-btn:hover {
  color: #ffffff;
  border-color: var(--border-acrylic-bright);
  background: rgba(56, 189, 248, 0.12);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #041017;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.35);
}

.filter-count {
  font-size: 0.75rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.2);
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.35rem;
}

.gallery-card {
  background: var(--bg-card);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
  cursor: zoom-in;
  display: flex;
  flex-direction: column;
}

.gallery-card[hidden] {
  display: none !important;
}

.gallery-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-glow);
}

.gallery-img-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #051119;
}

.gallery-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-card:hover .gallery-img-wrap img {
  transform: scale(1.07);
}

.gallery-zoom-badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(6, 19, 28, 0.78);
  border: 1px solid var(--border-acrylic-bright);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.85);
  transition: all var(--transition);
}

.gallery-card:hover .gallery-zoom-badge {
  opacity: 1;
  transform: scale(1);
}

.gallery-body {
  padding: 1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
}

.gallery-cat-tag {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-light);
  font-weight: 700;
}

.gallery-title {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
}

.gallery-sub {
  font-size: 0.83rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Section Volet Artistique : Sculptures d'Édith Cantin
   ========================================================================== */
.artist-intro-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.demarche-text p {
  color: var(--text-secondary);
  margin-bottom: 1.1rem;
  font-size: 1rem;
}

.pdf-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.cv-highlights {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cv-block {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.35rem;
}

.cv-block h4 {
  font-size: 1rem;
  color: var(--primary-light);
  margin-bottom: 0.55rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cv-block ul {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.cv-block li {
  font-size: 0.86rem;
  color: var(--text-secondary);
  padding-left: 0.9rem;
  position: relative;
}

.cv-block li::before {
  content: '•';
  color: var(--accent-laser);
  position: absolute;
  left: 0;
}

.award-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid rgba(245, 158, 11, 0.45);
  color: #fbbf24;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  margin-top: 0.25rem;
  width: fit-content;
}

/* CV Accordion for Complete Expositions & Media */
.cv-details {
  margin-bottom: 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.cv-details summary {
  padding: 1.15rem 1.5rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
  background: rgba(56, 189, 248, 0.08);
}

.cv-details summary:hover {
  background: rgba(56, 189, 248, 0.14);
}

.cv-details-body {
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* ==========================================================================
   Section FAQ (SEO Rich Snippets)
   ========================================================================== */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item[open] {
  border-color: var(--primary-light);
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.08rem;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  list-style: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.14);
  color: var(--primary-light);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: var(--primary-light);
  color: var(--bg-deep);
}

.faq-answer {
  padding: 0 1.5rem 1.35rem;
  color: var(--text-secondary);
  font-size: 0.97rem;
}

/* ==========================================================================
   Section Contact, Soumission & Carte Google Maps
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 2.5rem;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  margin: 1.75rem 0;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.15rem;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-md);
}

.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.15);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 22px;
  height: 22px;
}

.contact-info-item h4 {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.contact-info-item p,
.contact-info-item a {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
}

.contact-info-item a:hover {
  color: var(--primary-light);
}

.map-embed {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-acrylic-bright);
  height: 260px;
  background: #071824;
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Form */
.quote-form {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.15rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  background: rgba(4, 14, 22, 0.75);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  color: #ffffff;
  font-family: inherit;
  font-size: 0.96rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.2);
}

textarea.form-control {
  min-height: 125px;
  resize: vertical;
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.65rem 0.85rem;
  background: rgba(56, 189, 248, 0.06);
  border: 1px solid var(--border-acrylic);
  border-radius: var(--radius-sm);
  user-select: none;
}

.form-checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--primary-light);
  cursor: pointer;
  flex-shrink: 0;
}

.form-status {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #6ee7b7;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #02080d;
  border-top: 1px solid var(--border-acrylic);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--primary-light);
  margin-bottom: 1.15rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition), transform var(--transition);
  display: inline-block;
}

.footer-links a:hover {
  color: #ffffff;
  transform: translateX(3px);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Lightbox Modal
   ========================================================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(2, 9, 15, 0.92);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-dialog {
  position: relative;
  max-width: 960px;
  width: 100%;
  background: var(--bg-panel-solid);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.lightbox-media {
  position: relative;
  background: #01060a;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  max-height: 72vh;
}

.lightbox-media img {
  max-height: 72vh;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.lightbox-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(4, 14, 22, 0.85);
  border: 1px solid var(--border-highlight);
  color: #ffffff;
  font-size: 1.35rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: background var(--transition), transform var(--transition);
}

.lightbox-close:hover {
  background: var(--primary);
  transform: scale(1.06);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(4, 14, 22, 0.8);
  border: 1px solid var(--border-highlight);
  color: #ffffff;
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.lightbox-nav:hover {
  background: var(--primary);
}

.lightbox-prev,
.lightbox-nav.prev {
  left: 1rem;
}

.lightbox-next,
.lightbox-nav.next {
  right: 1rem;
}

.lightbox-footer {
  padding: 1.25rem 1.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--border-acrylic);
}

.lightbox-info h4,
.lightbox-meta h3 {
  font-size: 1.1rem;
  color: #ffffff;
  margin-bottom: 0.2rem;
}

.lightbox-info p,
.lightbox-meta p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
}

/* ==========================================================================
   Back to Top Button
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #ffffff;
  border: 1px solid var(--border-highlight);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

/* ==========================================================================
   Responsive Design — Toutes tailles d'écrans (4K, Laptop, Tablette, Mobile)
   ========================================================================== */

/* Écrans portables standards (<= 1360px) : libérer l'espace en masquant le sous-slogan à côté du logo */
@media (max-width: 1360px) {
  .brand-tagline {
    display: none;
  }
}

/* Écrans portables compacts (1061px à 1180px) : bouton téléphone icône seule */
@media (max-width: 1180px) {
  .header-phone-btn span {
    display: none;
  }

  .header-phone-btn {
    padding: 0.55rem 0.7rem;
  }

  .nav-link {
    padding: 0.48rem 0.62rem;
    font-size: 0.88rem;
  }
}

/* Tablettes paysage / portrait & petits portables (<= 1060px) : passage au tiroir mobile */
@media (max-width: 1060px) {
  .desktop-nav {
    display: none;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .brand-tagline {
    display: flex;
  }

  .header-phone-btn span {
    display: inline;
  }

  .hero-grid,
  .about-grid,
  .artist-intro-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Tablettes portrait & grands téléphones (<= 768px) */
@media (max-width: 768px) {
  :root {
    --header-height: 72px;
  }

  .topbar-right {
    display: none;
  }

  .topbar-left {
    justify-content: center;
    width: 100%;
    text-align: center;
    gap: 0.5rem;
  }

  .header-phone-btn {
    display: none;
  }

  .section {
    padding: 3.75rem 0;
  }

  .hero {
    padding: 2.75rem 0 3.5rem;
  }

  .acrylic-panel,
  .service-card,
  .materials-box {
    padding: 1.5rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 1rem;
  }

  .lightbox {
    padding: 0.75rem;
  }

  .lightbox-footer {
    padding: 1rem;
    flex-direction: column;
    align-items: stretch;
  }

  .lightbox-footer .btn {
    width: 100%;
  }
}

/* Téléphones mobiles standards & compacts (<= 560px) */
@media (max-width: 560px) {
  .container {
    padding: 0 1rem;
  }

  .brand-tagline {
    display: none;
  }

  .brand-logo {
    height: 36px;
  }

  .header-quote-btn {
    padding: 0.5rem 0.9rem;
    font-size: 0.84rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats,
  .pillars-list,
  .form-row,
  .footer-grid,
  .services-grid,
  .categories-overview {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.5rem;
    -webkit-overflow-scrolling: touch;
  }

  .filter-btn {
    flex-shrink: 0;
  }
}