/* Header - Ultra Robotics Industrial Header with Neon Orange Accent Line */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-header);
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 3px solid var(--color-primary);
  box-shadow: 0 2px 10px rgba(18, 18, 18, 0.05);
  transition: background-color var(--transition-normal);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.logo {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-black);
  font-size: 1.4rem;
  color: var(--color-dark);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  letter-spacing: -0.01em;
  text-transform: uppercase;
}

.logo:hover {
  color: var(--color-primary);
}

.logo-slash {
  display: inline-block;
  width: 6px;
  height: 18px;
  background-color: var(--color-primary);
  transform: skewX(-15deg);
  margin-right: 4px;
  flex-shrink: 0;
  box-shadow: 0 0 10px rgba(255, 69, 0, 0.5);
}

/* Desktop Navigation */
.nav {
  display: none;
}

@media (min-width: 1024px) {
  .nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-dark);
  position: relative;
  text-decoration: none;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 3px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  margin-left: var(--space-4);
}

/* Mobile Navigation */
.mobile-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-dark);
}

@media (min-width: 1024px) {
  .mobile-menu-toggle {
    display: none;
  }
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: var(--color-white);
  border-left: 4px solid var(--color-primary);
  z-index: var(--z-modal);
  padding: var(--space-24) var(--space-8) var(--space-8);
  transition: right var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  box-shadow: -4px 0 20px rgba(18, 18, 18, 0.15);
}

.mobile-menu.is-open {
  right: 0;
}

.mobile-menu .nav-link {
  font-size: 1.125rem;
  display: block;
  padding: var(--space-2) 0;
}

/* Footer - Ultra Robotics Industrial Black (#121212) */
.footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-16) 0 var(--space-8) 0;
  border-top: 4px solid var(--color-primary);
}

.footer-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-container {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-brand .logo {
  color: var(--color-white);
}

.footer-brand p {
  color: #A3A3A3;
  max-width: 320px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links h4 {
  color: var(--color-white);
  margin-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer a {
  color: #A3A3A3;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--color-primary);
}

.footer-social {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-4);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 0 14px var(--color-primary-glow);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  color: #737373;
  margin-bottom: 0;
  font-size: 0.875rem;
}

.footer-legal-links {
  display: flex;
  justify-content: center;
  gap: var(--space-6);
}

/* WhatsApp Widget */
.whatsapp-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: var(--z-whatsapp);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.whatsapp-tooltip {
  background-color: var(--color-white);
  color: var(--color-dark);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-md);
  border-left: 3px solid var(--color-whatsapp);
  opacity: 0;
  visibility: hidden;
  transform: translateX(10px);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.whatsapp-widget:hover .whatsapp-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.whatsapp-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background-color: var(--color-whatsapp);
  color: var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
  animation: pulse 2s infinite;
  transition: transform var(--transition-normal), background-color var(--transition-normal);
}

.whatsapp-btn:hover {
  background-color: var(--color-whatsapp-dark);
  animation: none;
  transform: scale(1.1);
}

.whatsapp-btn svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}