/* ===== BASE & UTILITIES ===== */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== NAVIGATION ===== */
#site-header {
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

#site-header.scrolled {
  background: rgba(30, 39, 45, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
  padding: 0;
}

#site-header.scrolled nav {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: #F97583;
  border-radius: 1px;
  transition: width 0.2s ease, left 0.2s ease;
}

.nav-link:hover::after {
  width: 60%;
  left: 20%;
}

/* ===== MOBILE NAV ===== */
#mobile-nav.open {
  opacity: 1;
  pointer-events: auto;
}

#mobile-nav.open .mobile-nav-link {
  animation: fadeSlideIn 0.3s ease forwards;
}

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

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.menu-line {
  display: block;
}

#menu-toggle[aria-expanded="true"] .menu-line:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

#menu-toggle[aria-expanded="true"] .menu-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

#menu-toggle[aria-expanded="true"] .menu-line:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
  width: 5rem;
}

/* ===== 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, #F97583, #FFB4B4);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

/* ===== TESTIMONIAL CARDS ===== */
.testimonial-card {
  position: relative;
}

.testimonial-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 1rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  pointer-events: none;
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
  opacity: 1;
  transform: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal.revealed {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .service-card::before {
    transition: none;
  }

  .service-card:hover::before {
    transform: scaleX(1);
  }

  iframe {
    transition: none;
  }
}

/* ===== FORM FOCUS STATES ===== */
input:focus,
select:focus,
textarea:focus {
  outline: none;
}

/* ===== SELECTION ===== */
::selection {
  background: rgba(249, 117, 131, 0.2);
  color: #2A353C;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
  html {
    scroll-padding-top: 70px;
  }
}