/* ============================================
   NGN Elétrica e Automação — Custom CSS
   ============================================ */

/* Base */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

/* Page Loader */
.page-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #0a0a0a;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(245, 158, 11, 0.2);
  border-top-color: #f59e0b;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Navbar */
.navbar {
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
  background-color: rgba(10, 10, 10, 0.9) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Text Gradient */
.text-gradient {
  background: linear-gradient(135deg, #f59e0b, #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* WhatsApp Pulse */
@keyframes pulse-slow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
  }
  50% {
    box-shadow: 0 0 0 14px rgba(37, 211, 102, 0);
  }
}

.whatsapp-pulse {
  animation: pulse-slow 2.5s ease-in-out infinite;
}

/* Hero gradient overlay */
.hero-overlay {
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.7) 0%,
    rgba(10, 10, 10, 0.5) 50%,
    rgba(10, 10, 10, 0.95) 100%
  );
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Highlight card hover */
.highlight-card {
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.highlight-card:hover {
  transform: translateY(-4px);
  border-color: rgba(245, 158, 11, 0.3);
}

/* Button shine effect */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.15),
    transparent
  );
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}

.btn-primary:hover::after {
  left: 120%;
}

/* Mobile menu overlay */
.mobile-menu {
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu.open {
  opacity: 1 !important;
  visibility: visible !important;
}

/* Focus states */
*:focus-visible {
  outline: 2px solid #f59e0b;
  outline-offset: 2px;
}

/* Form input focus */
.form-input:focus {
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 10000;
  padding: 8px 16px;
  background: #f59e0b;
  color: #0a0a0a;
  font-weight: 600;
  border-radius: 0 0 8px 8px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #0a0a0a;
}

::-webkit-scrollbar-thumb {
  background: #333;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* Selection */
::selection {
  background: rgba(245, 158, 11, 0.3);
  color: #fff;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .whatsapp-pulse {
    animation: none;
  }

  .service-card:hover {
    transform: none;
  }

  .highlight-card:hover {
    transform: none;
  }

  .btn-primary::after {
    display: none;
  }

  .page-loader {
    transition: none;
  }

  .loader-spinner {
    animation: none;
  }

  .navbar {
    transition: none;
  }
}