*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  overflow-x: hidden;
}

/* Navbar transitions */
#navbar {
  transition: background-color 0.4s ease, box-shadow 0.4s ease, padding 0.4s ease;
}

#navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(30, 32, 39, 0.08);
}

#navbar.scrolled .nav-link {
  color: #424752;
}

#navbar.scrolled .font-heading {
  color: #1E2027;
}

/* Scroll reveal — progressive enhancement via JS */
.scroll-reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
  .scroll-reveal {
    opacity: 0;
    transform: translateY(28px);
  }

  .scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

.mobile-link {
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid #e8e9eb;
}

.mobile-link:last-child {
  border-bottom: none;
}

/* Subtle pattern for hero overlay */
.hero-pattern {
  background-image: radial-gradient(circle at 25% 25%, rgba(232, 115, 90, 0.08) 0%, transparent 50%),
                    radial-gradient(circle at 75% 75%, rgba(232, 115, 90, 0.05) 0%, transparent 50%);
}

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

::-webkit-scrollbar-track {
  background: #f6f7f8;
}

::-webkit-scrollbar-thumb {
  background: #d1d3d8;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a8abb4;
}

/* Selection color */
::selection {
  background-color: rgba(232, 115, 90, 0.2);
  color: #1e2027;
}