/* Custom Properties */
:root {
  --color-primary: #004b87; /* Deep water blue */
  --color-primary-light: #006bbd;
  --color-primary-dark: #00335c;
  --color-accent: #00a8e8; /* Bright cyan/blue accent for CTA */
  --color-accent-hover: #008fcc;
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f9; /* Cool neutral gray/blue */
  --color-text: #334155;
  --color-heading: #0f172a;
  --color-border: #e2e8f0;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --radius: 4px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --header-height: 80px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  color: var(--color-text);
  line-height: 1.6;
}

body {
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover, a:focus {
  color: var(--color-primary-light);
}

/* Typography */
h1, h2, h3, h4 {
  color: var(--color-heading);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
p { margin-bottom: var(--spacing-md); font-size: 1.125rem; }
ul, ol { margin-bottom: var(--spacing-md); padding-left: var(--spacing-lg); font-size: 1.125rem; }
li { margin-bottom: 0.5rem; }

/* Layout & Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

/* Accessibility */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Buttons & CTAs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  background-color: var(--color-accent);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius);
  text-align: center;
  border: none;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn:hover, .btn:focus {
  background-color: var(--color-accent-hover);
  color: #fff;
}

.btn:active {
  transform: translateY(1px);
}

.btn-large {
  font-size: 1.125rem;
  padding: 1rem 2rem;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  box-shadow: var(--shadow);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  align-items: center;
}

.main-nav a {
  color: var(--color-heading);
  font-weight: 500;
  padding: 0.5rem 0;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
}

.main-nav li {
  position: relative;
}

.main-nav ul.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-bg);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  min-width: 240px;
  z-index: 1000;
  padding: 0.5rem 0;
}

.main-nav .dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-menu li {
  width: 100%;
}

.dropdown-menu a {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
}

.dropdown-menu a:hover {
  background-color: var(--color-bg-alt);
}

.dropdown > a span {
  font-size: 0.7em;
  margin-left: 0.25rem;
}

.header-cta {
  margin-left: 1rem;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--color-bg);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    z-index: 99;
  }
  .main-nav.is-open {
    transform: translateY(0);
  }
  .main-nav ul {
    flex-direction: column;
    padding: var(--spacing-md);
    gap: 0;
  }
  .main-nav li {
    width: 100%;
    margin: 0;
  }
  .main-nav a {
    display: block;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
  }
  .main-nav li:last-child a {
    border-bottom: none;
  }
  
  .main-nav ul.dropdown-menu {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-border);
    margin: 0 0 0 1rem;
    min-width: 100%;
  }
  
  .main-nav .dropdown:hover .dropdown-menu,
  .main-nav .dropdown:active .dropdown-menu,
  .main-nav .dropdown:focus-within .dropdown-menu {
    display: block;
  }
  
  .dropdown-menu a {
    border-bottom: none;
    padding: 0.75rem 1rem;
  }

  .header-cta {
    display: none;
  }
}

/* Hero Section */
.hero {
  background-color: var(--color-primary-dark);
  color: #fff;
  padding: calc(var(--spacing-xl) * 1.5) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero h1, .hero p {
  color: #fff;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: var(--spacing-md) 0;
  background-color: var(--color-bg-alt);
  font-size: 0.875rem;
}
.breadcrumbs ol {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}
.breadcrumbs li {
  display: flex;
  align-items: center;
  margin: 0;
}
.breadcrumbs li:not(:last-child)::after {
  content: "→";
  margin: 0 0.5rem;
  color: var(--color-text);
  opacity: 0.5;
}

/* Service Grids */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

/* Content Layouts */
.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .content-grid-2 {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .content-grid-reverse .content-img {
    order: -1;
  }
}

.content-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* FAQs */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
}

.faq-item h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary-dark);
}

.faq-item p:last-child {
  margin-bottom: 0;
}

/* Call to Action Bar */
.cta-bar {
  background-color: var(--color-primary-light);
  color: #fff;
  text-align: center;
  padding: var(--spacing-xl) 0;
}
.cta-bar h2, .cta-bar p {
  color: #fff;
}
.cta-bar .btn {
  background-color: #fff;
  color: var(--color-primary-dark);
}
.cta-bar .btn:hover {
  background-color: var(--color-bg-alt);
}

/* Footer */
.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.site-footer h3 {
  color: #fff;
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer-links {
  list-style: none;
  padding: 0;
}
.footer-links li {
  margin-bottom: 0.5rem;
}
.footer-links a {
  color: rgba(255, 255, 255, 0.8);
}
.footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: 0.875rem;
}

.footer-bottom a {
  color: #fff;
  text-decoration: underline;
}

/* Mobile Sticky CTA */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-accent);
  padding: 1rem;
  text-align: center;
  z-index: 1000;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
  padding-bottom: env(safe-area-inset-bottom, 1rem);
}

.mobile-sticky-cta a {
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
}

@media (max-width: 768px) {
  body {
    padding-bottom: 80px; /* Space for sticky CTA */
  }
  .mobile-sticky-cta {
    display: block;
  }
}