/* Spec 7 Insulation — Custom Styles */

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

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #1A1A1A;
}
::-webkit-scrollbar-thumb {
  background: #3D3D3D;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #4A4A4A;
}

/* Selection */
::selection {
  background: #E8644A;
  color: #1A1A1A;
}

/* Service cards */
.service-card {
  cursor: default;
}

/* FAQ */
.faq-item {
  overflow: hidden;
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-content.open {
  max-height: 300px;
}

/* Nav scroll state */
.nav-scrolled {
  background: rgba(26, 26, 26, 0.95) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(61, 61, 61, 0.5);
}

/* Mobile menu animation */
#mobile-menu {
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal (progressive enhancement — only when JS is available) */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
  .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; }
  .reveal-delay-5 { transition-delay: 0.5s; }
  .reveal-delay-6 { transition-delay: 0.6s; }
}

/* Select dropdown arrow */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 40px;
}

/* Focus visible */
*:focus-visible {
  outline: 2px solid #E8644A;
  outline-offset: 2px;
}