/* ============================================================
   SHARED STYLES — JMB 4X4 by ENG PNEUS
   Palette : rouge vif (#ef4444) · bleu électrique (#3b82f6) · gris zinc
============================================================ */

html { scroll-behavior: smooth; }

/* Backgrounds */
.hero-bg        { background: linear-gradient(135deg, #09090b 0%, #18181b 40%, #27272a 100%); }
.hero-pattern   {
  background-image:
    radial-gradient(circle at 20% 50%, rgba(239,68,68,0.11) 0%, transparent 50%),
    radial-gradient(circle at 80% 25%, rgba(37,99,235,0.11) 0%, transparent 45%);
}
.eng-pattern    {
  background-image:
    radial-gradient(circle at 80% 50%, rgba(59,130,246,0.10) 0%, transparent 50%),
    radial-gradient(circle at 20% 20%, rgba(59,130,246,0.05) 0%, transparent 40%);
}

.tread-line {
  background: repeating-linear-gradient(
    90deg, transparent, transparent 8px,
    rgba(239,68,68,0.20) 8px, rgba(239,68,68,0.20) 10px
  );
}

/* Cards */
.card-hover { transition: transform 0.3s ease, box-shadow 0.3s ease; }
.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.45), 0 0 0 1px rgba(239,68,68,0.30);
}
.card-hover-blue:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.45), 0 0 0 1px rgba(59,130,246,0.35);
}

/* Navbar underline animation */
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: #ef4444;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }
.nav-link.active::after { width: 100%; }
.nav-link.active { color: #ef4444; }

/* Mobile menu */
.mobile-menu { display: none; }
.mobile-menu.open { display: flex; }

/* Wheel spin */
@keyframes spin-slow { to { transform: rotate(360deg); } }
.spin-slow { animation: spin-slow 20s linear infinite; }
.spin-slow-rev { animation: spin-slow 20s linear infinite reverse; }

/* Fade-in entries */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in          { animation: fadeInUp 0.8s ease both; }
.fade-in-delay-1  { animation: fadeInUp 0.8s 0.2s ease both; }
.fade-in-delay-2  { animation: fadeInUp 0.8s 0.4s ease both; }
.fade-in-delay-3  { animation: fadeInUp 0.8s 0.6s ease both; }

/* Page hero banner — gris foncé vers bleu électrique profond */
.page-banner {
  background: linear-gradient(135deg, #09090b 0%, #18181b 55%, #11213f 100%);
  padding: 7rem 0 4rem;
}

/* Brand pill badges */
.badge-jmb { background: rgba(239,68,68,0.14); border: 1px solid rgba(239,68,68,0.30); color: #f87171; }
.badge-eng { background: rgba(59,130,246,0.14);  border: 1px solid rgba(59,130,246,0.30);  color: #60a5fa; }

/* Form inputs focus */
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: #ef4444 !important;
}