*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, sans-serif; }

img, video, svg { max-width: 100%; height: auto; }

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 1.5rem;
}

/* Table wrapper */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Smooth scroll */
html { scroll-behavior: smooth; }

/* Hero gradient */
.hero-gradient {
  background: linear-gradient(135deg, #0f4c5c 0%, #1a6b7d 50%, #2a8d9e 100%);
}

/* Section spacing */
.section-padding {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

@media (min-width: 768px) {
  .section-padding {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
}

/* Card hover effect */
.service-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover {
  transform: translateY(-4px);
}

/* Fade-in animation */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Active nav link */
.nav-active {
  color: #2a8d9e;
  font-weight: 600;
}

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

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.3);
}
.whatsapp-float svg {
  width: 30px;
  height: 30px;
  fill: #ffffff;
}