/* ============================================
   Complete Plumbing — Custom Styles
   ============================================ */

/* ---- Base ---- */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
}

/* ---- Scroll Reveal (progressive enhancement) ---- */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }
  .reveal.revealed {
    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; }
}

/* ---- Navbar ---- */
#site-header {
  background: transparent;
}

#site-header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(10, 35, 66, 0.06);
  box-shadow: 0 1px 20px rgba(10, 35, 66, 0.06);
}

.nav-link {
  position: relative;
}

#site-header:not(.scrolled) .nav-link {
  color: rgba(255, 255, 255, 0.75);
}

#site-header:not(.scrolled) .nav-link:hover {
  color: #6DD5C0;
  background: rgba(255, 255, 255, 0.08);
}

/* ---- Mobile Menu ---- */
#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

#mobile-menu.open {
  max-height: 500px;
}

/* ---- 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, #6DD5C0, #48b89e);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover::before {
  opacity: 1;
}

/* ---- Area Pills ---- */
.area-pill {
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

/* ---- Form Select ---- */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230A2342' 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;
}

/* ---- Back to Top ---- */
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---- Selection ---- */
::selection {
  background: rgba(109, 213, 192, 0.25);
  color: #0A2342;
}

/* ---- Focus Visible ---- */
:focus-visible {
  outline: 2px solid #6DD5C0;
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .service-card,
  .area-pill,
  a,
  button {
    transition: none;
  }
  #back-to-top {
    transition: none;
  }
}