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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-gray-700);
  background-color: var(--color-off-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-navy-soft);
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: var(--text-4xl); margin-bottom: var(--spacing-4); }
h2 { font-size: var(--text-3xl); margin-bottom: var(--spacing-4); }
h3 { font-size: var(--text-2xl); margin-bottom: var(--spacing-3); }
h4 { font-size: var(--text-xl); margin-bottom: var(--spacing-2); }

p {
  margin-bottom: var(--spacing-4);
}

a {
  color: var(--color-navy-soft);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Accessibility: Focus States */
:focus {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-4);
}

main {
  flex: 1;
}

/* Header */
.site-header {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  border-bottom: 2px solid var(--color-gold);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-link {
  display: flex;
  align-items: center;
  height: 48px;
}

.logo-link img {
  height: 100%;
  width: auto;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
}

.nav-link {
  color: var(--color-gray-600);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.5px;
  padding: var(--spacing-2) 0;
  position: relative;
}

.nav-link:hover, .nav-link:focus {
  color: var(--color-navy-soft);
}

.nav-link.active {
  color: var(--color-navy-soft);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-gold);
  border-radius: var(--radius-sm);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-navy-soft);
  font-size: var(--text-2xl);
  cursor: pointer;
  padding: var(--spacing-2);
}

/* Footer */
.site-footer {
  background-color: var(--color-navy-dark);
  color: var(--color-gray-300);
  padding: var(--spacing-10) 0 var(--spacing-6);
  margin-top: auto;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
  .footer-content {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.footer-brand p {
  font-size: var(--text-sm);
  max-width: 300px;
}

.footer-links h5 {
  color: var(--color-white);
  font-size: var(--text-base);
  margin-bottom: var(--spacing-4);
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-2);
}

.footer-links a {
  color: var(--color-gray-300);
  font-size: var(--text-sm);
}

.footer-links a:hover, .footer-links a:focus {
  color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-700);
  padding-top: var(--spacing-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-4);
  font-size: var(--text-xs);
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* Mobile Menu Styles */
@media (max-width: 767px) {
  .mobile-nav-toggle {
    display: block;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-4);
    box-shadow: var(--shadow-md);
    border-top: 1px solid var(--color-gray-100);
    gap: var(--spacing-2);
  }

  .main-nav.is-open {
    display: flex;
  }

  .nav-link {
    padding: var(--spacing-3);
    border-radius: var(--radius-md);
    color: var(--color-gray-600);
  }
  
  .nav-link:hover, .nav-link:focus, .nav-link.active {
    background-color: var(--color-gray-50);
    color: var(--color-navy-soft);
  }

  .nav-link.active::after {
    display: none;
  }
}