:root {
  --primary: #2563EB;
  --dark: #0F172A;
  --background: #F8FAFC;
  --white: #FFFFFF;
  --accent: #F97316;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--background);
  color: var(--dark);
}

.dark body, body.dark {
  background-color: var(--dark);
  color: #E2E8F0;
}

.glass {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.dark .glass {
  background: rgba(15, 23, 42, 0.85);
}

.gradient-text {
  background: linear-gradient(135deg, #2563EB, #3B82F6, #60A5FA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.12);
}

.skeleton {
  background: linear-gradient(90deg, #E2E8F0 25%, #F1F5F9 50%, #E2E8F0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.dark .skeleton {
  background: linear-gradient(90deg, #1E293B 25%, #334155 50%, #1E293B 75%);
  background-size: 200% 100%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeIn 0.4s ease forwards; }

.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.875rem 1.25rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  animation: slideIn 0.3s ease;
  max-width: 360px;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-success { background: #10B981; color: white; }
.toast-error { background: #EF4444; color: white; }
.toast-info { background: var(--primary); color: white; }

.mega-menu {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.25s ease;
}

.mega-menu.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.product-img {
  aspect-ratio: 1;
  object-fit: contain;
  background: #F8FAFC;
}

.dark .product-img { background: #1E293B; }

.btn-primary {
  background: var(--primary);
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: 0.625rem;
  font-weight: 600;
  transition: all 0.2s;
}

.btn-primary:hover {
  background: #1D4ED8;
  transform: scale(1.02);
}

.btn-accent {
  background: var(--accent);
  color: white;
  padding: 0.625rem 1.25rem;
  border-radius: 0.625rem;
  font-weight: 600;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }
.dark ::-webkit-scrollbar-thumb { background: #475569; }

/* WhatsApp flotante */
.whatsapp-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9998;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.whatsapp-float-btn {
  width: 3.75rem;
  height: 3.75rem;
  background: #25D366;
  color: white;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.55);
}

.whatsapp-float-label {
  background: white;
  color: #0F172A;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  opacity: 0;
  transform: translateX(10px);
  transition: all 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
}

.dark .whatsapp-float-label {
  background: #1E293B;
  color: #F1F5F9;
}

.whatsapp-float:hover .whatsapp-float-label {
  opacity: 1;
  transform: translateX(0);
}

@keyframes whatsapp-pulse {
  0%, 100% { box-shadow: 0 8px 24px rgba(37, 211, 102, 0.45); }
  50% { box-shadow: 0 8px 32px rgba(37, 211, 102, 0.75), 0 0 0 8px rgba(37, 211, 102, 0.15); }
}