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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }

/* Header scroll state */
#header.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06), 0 4px 20px rgba(0,0,0,0.04);
}

.nav-link { position: relative; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #0d9488;
  border-radius: 1px;
  transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

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

.mobile-link {
  position: relative;
}
.mobile-link::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #0d9488;
  margin: 4px auto 0;
  transition: width 0.3s ease;
}
.mobile-link:hover::after { width: 60%; }

/* Hero buttons */
.hero-btn-primary {
  position: relative;
  overflow: hidden;
}
.hero-btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.hero-btn-primary:hover::before { opacity: 1; }

.hero-btn-secondary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,148,136,0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.hero-btn-secondary:hover::before { opacity: 1; }

/* Service cards */
.service-card {
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #0d9488, #2dd4bf);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.service-card:hover::before { transform: scaleX(1); }

/* Gallery */
.gallery-item { cursor: pointer; }
.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,148,136,0.1) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  border-radius: inherit;
}
.gallery-item:hover::after { opacity: 1; }

/* Tag */
.service-tag {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.service-tag::before {
  content: '';
  width: 24px;
  height: 2px;
  background: #0d9488;
  border-radius: 1px;
}

/* Fade-in animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Custom select styling */
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='%2394a3b8' 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 14px center;
  padding-right: 40px;
}

/* Date input styling */
input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(0.6) sepia(1) saturate(5) hue-rotate(120deg);
  cursor: pointer;
}

/* Smooth focus visible */
:focus-visible {
  outline: 2px solid #0d9488;
  outline-offset: 2px;
}

/* Selection color */
::selection {
  background: rgba(13,148,136,0.2);
  color: #134e4a;
}