/* ========================================
   Little Walnut Creek Greenbelt - Shared Styles
   ======================================== */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
  /* Colors - Earthy greenbelt palette */
  --color-sage: #a8b5a0;
  --color-sage-dark: #7a8a70;
  --color-sage-light: #d4ddd0;
  --color-forest: #4a5a42;
  --color-cream: #f8f7f4;
  --color-stone: #5c5c5c;
  --color-stone-light: #767676;
  --color-white: #ffffff;

  /* Typography */
  --font-display: 'Libre Baskerville', Georgia, serif;
  --font-body: 'Source Sans 3', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;

  /* Layout */
  --max-width: 1100px;
  --header-height: 120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-stone);
  background-color: var(--color-cream);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 3px solid var(--color-forest);
  outline-offset: 2px;
}

/* Skip link for keyboard users */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-sm);
  background: var(--color-forest);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-sm);
  text-decoration: none;
  font-weight: 600;
  z-index: 1000;
  border-radius: 0 0 4px 4px;
}

.skip-link:focus {
  top: 0;
}

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

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-sage-light);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  text-align: center;
}

.site-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 400;
  color: var(--color-sage-dark);
  letter-spacing: 0.02em;
  margin-bottom: var(--space-md);
}

.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs);
}

.main-nav a {
  display: block;
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-stone);
  text-decoration: none;
  border-left: 1px solid var(--color-sage-light);
  transition: color 0.2s ease;
}

.main-nav li:first-child a {
  border-left: none;
}

.main-nav a:hover,
.main-nav a:focus {
  color: var(--color-forest);
}

.main-nav a[aria-current="page"] {
  color: var(--color-sage-dark);
  font-weight: 600;
}

/* ========================================
   Page Header (for interior pages)
   ======================================== */
.page-header {
  background-color: var(--color-white);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  border-bottom: 1px solid var(--color-sage-light);
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 400;
  color: var(--color-sage-dark);
  max-width: var(--max-width);
  margin: 0 auto;
}

.page-subtitle {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--color-stone-light);
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ========================================
   Main Content
   ======================================== */
main {
  background-color: var(--color-white);
  flex: 1;
}

.content-wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-2xl);
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-stone);
  margin-bottom: var(--space-sm);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background-color: var(--color-sage);
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  color: var(--color-forest);
  font-size: 1rem;
  font-weight: 600;
}

.footer-content a {
  color: var(--color-forest);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  .content-wrapper {
    padding: var(--space-lg);
  }

  .page-header {
    padding: var(--space-lg);
  }

  .main-nav a {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) {
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  .main-nav a {
    border-left: none;
    border-top: none;
    border-bottom: 1px solid var(--color-sage-light);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.95rem;
    text-align: center;
  }

  .main-nav li:first-child a {
    border-top: 1px solid var(--color-sage-light);
  }
}

/* ========================================
   Utility Classes
   ======================================== */
.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;
}