/* ===== BASE & RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }

/* ===== HEADER ===== */
#header {
  background: transparent;
  transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}
#header.scrolled {
  background: rgba(250, 246, 242, 0.92);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 20px rgba(44, 40, 37, 0.08);
}
.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: #7B2D3B;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 60%;
}

/* ===== SERVICE CARDS ===== */
.service-card { cursor: default; }

/* ===== GALLERY ===== */
.gallery-item { cursor: pointer; }

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.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; }

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

/* ===== MOBILE NAV ===== */
#mobileNav {
  animation: fadeIn 0.3s ease;
}

/* ===== SELECTION ===== */
::selection {
  background: #7B2D3B;
  color: #FAF6F2;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #FAF6F2; }
::-webkit-scrollbar-thumb { background: #c4a3b5; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #7B2D3B; }