/* ===== BASE & UTILITIES ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; }

/* ===== NAV ===== */
#nav { transition: background 0.4s, box-shadow 0.4s, backdrop-filter 0.4s; }
#nav.scrolled {
  background: rgba(250, 245, 251, 0.92);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(123, 45, 139, 0.08);
}
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: #d4940f;
  transition: width 0.3s;
}
.nav-link:hover::after { width: 100%; }

/* ===== MOBILE MENU ===== */
#mobileMenu { animation: slideDown 0.3s ease; }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
.mobile-link { transition: background 0.2s, padding-left 0.2s; }
.mobile-link:hover { padding-left: 12px; }

/* ===== HERO ===== */
.animate-float {
  animation: float 4s ease-in-out infinite;
}
.animate-float-delayed {
  animation: float 4s ease-in-out infinite 2s;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.animate-scroll-line {
  animation: scrollLine 1.5s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

/* ===== SERVICE CARDS ===== */
.service-card { transform: translateY(0); transition: transform 0.4s, box-shadow 0.4s, border-color 0.4s; }
.service-card:hover { transform: translateY(-6px); }

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  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; }

/* ===== BACK TO TOP ===== */
#backToTop { transition: opacity 0.3s, transform 0.3s; }
#backToTop.show { opacity: 1; pointer-events: all; transform: translateY(0); }
#backToTop.hide { opacity: 0; pointer-events: none; transform: translateY(10px); }

/* ===== FORM ===== */
input:focus, select:focus, textarea:focus {
  box-shadow: 0 0 0 3px rgba(123, 45, 139, 0.15);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .font-serif { line-height: 1.15; }
}