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

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

::selection {
  background-color: rgba(232, 168, 76, 0.3);
  color: #f5f0f7;
}

/* Header scroll state */
#site-header.scrolled {
  background-color: rgba(30, 18, 38, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(74, 44, 94, 0.3);
}

/* Mobile menu */
#mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

#mobile-menu .mobile-link {
  transform: translateY(10px);
  opacity: 0;
  transition: all 0.3s ease;
}

#mobile-menu.open .mobile-link {
  transform: translateY(0);
  opacity: 1;
}

#mobile-menu.open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
#mobile-menu.open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* Hamburger animation */
#menu-toggle.active #bar1 {
  transform: translateY(4px) rotate(45deg);
}
#menu-toggle.active #bar2 {
  opacity: 0;
  transform: scaleX(0);
}
#menu-toggle.active #bar3 {
  transform: translateY(-4px) rotate(-45deg);
}

/* Service card hover */
.service-card {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.4);
}

/* Fade-in animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.fade-in-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.fade-in-stagger.visible > *:nth-child(2) { transition-delay: 0.08s; }
.fade-in-stagger.visible > *:nth-child(3) { transition-delay: 0.16s; }
.fade-in-stagger.visible > *:nth-child(4) { transition-delay: 0.24s; }
.fade-in-stagger.visible > *:nth-child(5) { transition-delay: 0.32s; }
.fade-in-stagger.visible > *:nth-child(6) { transition-delay: 0.4s; }

/* Form focus styles */
input:focus,
select:focus,
textarea:focus {
  border-color: rgba(232, 168, 76, 0.6) !important;
  box-shadow: 0 0 0 3px rgba(232, 168, 76, 0.1) !important;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #1e1226;
}
::-webkit-scrollbar-thumb {
  background: #4a2c5e;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #633a75;
}

/* Select arrow */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239a6fb0' 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 1rem center;
  padding-right: 2.5rem;
}

/* Responsive tweaks */
@media (max-width: 640px) {
  .font-serif {
    font-size: clamp(2rem, 8vw, 3rem);
  }
}