/**
 * Page d'accueil ImprimeZen3D — styles dédiés (cache navigateur)
 */
:root {
  --primary: #3a86ff;
  --primary-dark: #2667cc;
  --accent: #ffbe0b;
  --light: #f8f9fa;
  --dark: #212529;
  --text: #495057;
  --gray: #5a6268;
  --gray-muted: #6c757d;
  --success: #28a745;
  --border: 1px solid #dee2e6;
  --shadow: 0 1px 3px rgba(0,0,0,.12);
  --shadow-lg: 0 20px 45px -10px rgba(0,0,0,.18);
  --radius: 18px;
  --transition: all .4s cubic-bezier(.2,.8,.2,1);
  --touch-min: 44px;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 0.5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius);
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 0.5rem;
  outline: none;
  box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.5);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--light);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--dark);
  line-height: 1.2;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(2rem, 4.5vw, 2.6rem); }
h3 { font-size: clamp(1.4rem, 4vw, 1.8rem); }
h4 { font-size: 1.2rem; }
a { text-decoration: none; color: inherit; }
a:focus-visible,
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(58, 134, 255, 0.4);
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 8rem 0; position: relative; }
.section-title { text-align: center; margin: 0 auto 4rem; max-width: 820px; position: relative; }
.section-title p { font-size: 1.12rem; color: var(--gray); }
.section-title.section-title--sub { margin-top: 3rem; }

/* Utilitaires */
.bg-white { background: #fff; }
.bg-light { background: #f5f7fb; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.text-center { text-align: center; }
.card-pad { padding: 2rem; }
.sr-only { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Mesh gradient hero */
.mesh-bg {
  position: absolute;
  inset: -10% -10% auto -10%;
  height: 60vh;
  z-index: 0;
  pointer-events: none;
  filter: blur(25px);
  opacity: .6;
}
.mesh-bg::before,
.mesh-bg::after {
  content: "";
  position: absolute;
  width: 55vw;
  height: 55vw;
  border-radius: 50%;
}
.mesh-bg::before {
  left: -10%;
  top: -10%;
  background: radial-gradient(circle at 30% 30%, rgba(58,134,255,.28), transparent 60%);
}
.mesh-bg::after {
  right: -10%;
  top: -20%;
  background: radial-gradient(circle at 70% 30%, rgba(255,190,11,.22), transparent 55%);
}

.section-title .highlight { display: inline-block; position: relative; }
.section-title .highlight::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -6px;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(58,134,255,.35), rgba(255,190,11,.35));
  filter: blur(6px);
}

.card-border {
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.card-border::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(58,134,255,.6), rgba(255,190,11,.6));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .35s ease;
}
.card-border:hover::before { opacity: 1; }

/* Hero */
.hero {
  position: relative;
  padding: 6rem 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-title { margin-bottom: 1rem; line-height: 1.1; }
.hero-subtitle { font-size: 1.1rem; margin-bottom: 2rem; color: var(--gray); }
.hero-cta { display: flex; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.hero-cta-link {
  font-size: 0.95rem;
  color: var(--primary);
  font-weight: 600;
  align-self: center;
  display: inline-flex;
  align-items: center;
  min-height: var(--touch-min);
  padding: 0 0.25rem;
}
.hero-cta-link:hover { text-decoration: underline; }
.trust-badges { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1rem; }
.trust-badge {
  display: flex;
  align-items: center;
  gap: .5rem;
  min-height: var(--touch-min);
  font-size: .9rem;
  font-weight: 600;
  color: var(--dark);
  background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
  padding: .65rem 1rem;
  border-radius: 50px;
  border: 1px solid rgba(0,0,0,.05);
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
}
.local-badge {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: var(--touch-min);
  background: rgba(58,134,255,.1);
  padding: .6rem 1rem;
  border-radius: 50px;
  font-weight: 600;
}
.hero-image {
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1000px) rotateY(-10deg);
  transition: var(--transition);
  animation: float 6s ease-in-out infinite;
  aspect-ratio: 1200 / 800;
  width: 100%;
}
.hero-image:hover { transform: perspective(1000px) rotateY(0); }
.hero-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
@keyframes float {
  0%, 100% { transform: translateY(0) perspective(1000px) rotateY(-10deg); }
  50% { transform: translateY(-14px) perspective(1000px) rotateY(-10deg); }
}

/* Révélation hero (remplace Animate.css, pas de JS) */
@keyframes heroReveal {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes heroRevealDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-reveal { opacity: 0; animation: heroReveal .5s ease forwards; }
.hero-reveal--down { opacity: 0; animation: heroRevealDown .5s ease forwards; }
.hero-reveal--delay-1 { animation-delay: .15s; }
.hero-reveal--delay-2 { animation-delay: .3s; }
.hero-reveal--delay-3 { animation-delay: .45s; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  min-width: var(--touch-min);
  padding: 1rem 1.6rem;
  border-radius: 14px;
  font-weight: 800;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  box-shadow: var(--shadow);
  border: none;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: rgba(58,134,255,.03);
}
.btn-outline:hover { background: rgba(58,134,255,.08); transform: translateY(-3px); }
.btn--white { background: #fff; color: var(--primary); }
.btn--white:hover { background: #f8f9fa; }
.btn-card { margin-top: 1rem; }

/* Grids */
.services-grid,
.projects-grid,
.materials-grid,
.equipment-grid,
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}
.service-card,
.project-card,
.material-card,
.equipment-card,
.tech-card,
.advantage-card {
  border-radius: var(--radius);
  padding: 2rem;
  transition: var(--transition);
}
.service-card h3 { color: var(--primary); margin-bottom: .7rem; }
.material-card--tint { background: #f7f9ff; }
.material-card--tint .material-card__title,
.material-card--tint h3.material-card__title {
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 0.35rem;
}
.project-image { height: 250px; overflow: hidden; border-radius: 12px; margin-bottom: 1rem; }
.project-image img { width: 100%; height: 100%; object-fit: cover; }
.testimonial {
  font-style: italic;
  margin-top: 1rem;
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--gray);
}

/* Tech comparison */
.tech-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; margin-top: 3rem; }
.tech-card { background: #fff; box-shadow: var(--shadow); }
.tech-card h3 { text-align: center; margin-bottom: 1rem; color: var(--primary); }
.tech-features { list-style: none; }
.tech-features li {
  padding: .7rem 0;
  border-bottom: 1px dashed #e9ecef;
  display: flex;
  align-items: center;
}
.tech-features li::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-right: 1rem;
}

/* Workflow */
.workflow-diagram {
  margin: 3rem auto;
  max-width: 820px;
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.workflow-diagram.workflow-diagram--flat { box-shadow: none; }
.workflow-step {
  display: flex;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  position: relative;
  padding: 1rem 1rem 1rem 1.5rem;
  border-left: 4px solid transparent;
  transition: all .5s ease;
}
.workflow-step:hover {
  border-left-color: var(--primary);
  background: rgba(58,134,255,.03);
}
.step-icon {
  width: 2.4rem;
  height: 2.4rem;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  font-weight: 800;
}

/* Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.comparison-table th,
.comparison-table td { padding: 1.1rem; text-align: left; border-bottom: 1px solid #e9ecef; }
.comparison-table th {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  font-weight: 800;
  letter-spacing: .04em;
  font-size: .9rem;
}
.check-icon { color: var(--success); font-weight: 700; }
.check-icon::before { content: '✓'; margin-right: .5rem; }
.cross-icon { color: #ef4444; font-weight: 700; }
.cross-icon::before { content: '✗'; margin-right: .5rem; }

/* CTA section */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  text-align: center;
  padding: 5rem 1rem;
  border-radius: 22px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,.12) 0%, rgba(255,255,255,0) 70%);
}
.cta-section .container { position: relative; z-index: 2; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Séparateurs ondulés */
.wavy-sep { position: relative; height: 64px; margin: -32px 0 32px; }
.wavy-sep svg { position: absolute; left: 0; right: 0; top: 0; width: 100%; height: 100%; }
.wavy-sep--light path { fill: #f5f7fb; }
.wavy-sep--white path { fill: #ffffff; }

/* FAQ accordéon (SEO + accessibilité) */
.faq-accordion { padding: 2rem; }
.faq-accordion details {
  border-bottom: 1px solid #e9ecef;
}
.faq-accordion details:last-child { border-bottom: 0; }
.faq-accordion summary {
  padding: 1rem 0;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.faq-accordion summary::-webkit-details-marker { display: none; }
.faq-accordion summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--primary);
  flex-shrink: 0;
}
.faq-accordion details[open] summary::after { content: '−'; }
.faq-accordion .faq-answer {
  padding: 0 0 1.25rem;
  color: var(--text);
}
.faq-accordion .faq-answer p { margin: 0; }
.faq-accordion .faq-answer a { color: var(--primary); }
.faq-accordion .faq-answer a:hover { text-decoration: underline; }

/* Bloc applications + nav interne */
.apps-block h3 { margin-bottom: .5rem; color: var(--primary); }
.nav-inline { margin-top: 1rem; display: flex; gap: .6rem; flex-wrap: wrap; }

/* About grid + stats */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}
.stat-item {
  text-align: center;
  padding: 1rem;
  background: rgba(58,134,255,.06);
  border-radius: var(--radius);
}
.stat-number { font-size: 2rem; color: var(--primary); font-weight: 800; }
.about-image { min-height: 380px; }
.about-image img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }

/* Back to top */
.to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.to-top.show { opacity: 1; visibility: visible; }

/* Responsive */
@media (max-width: 1024px) {
  .container { padding: 0 1.5rem; }
  .section { padding: 6rem 0; }
  .hero { padding: 4rem 0; }
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-image { max-width: 680px; margin: 0 auto; }
  .tech-comparison { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .hero-cta { flex-direction: column; }
  .btn { width: 100%; }
  .projects-grid,
  .advantages-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .container { padding: 0 1.2rem; }
  .section-title { margin-bottom: 2.4rem; }
  .section-title p { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-image { animation: none; }
  *,
  .btn,
  .service-card,
  .project-card,
  .material-card,
  .equipment-card,
  .tech-card,
  .advantage-card { transition: none !important; }
}