/* ==========================================================================
   Naturally Accessible — Design System
   A nature-inspired, accessible-first design
   ========================================================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colour palette — nature-inspired */
  --color-forest:       #2D5F2D;
  --color-forest-dark:  #1A3C1A;
  --color-forest-light: #4A8B4A;
  --color-earth:        #8B6F47;
  --color-earth-light:  #A68B5B;
  --color-earth-dark:   #6B5230;
  --color-bark:         #5C4033;
  --color-leaf:         #6B8E23;
  --color-sky:          #4A90A4;
  --color-sky-light:    #6BB3C9;
  --color-stone:        #8E8E8E;

  /* Neutrals */
  --color-white:        #FFFFFF;
  --color-offwhite:     #F8F7F4;
  --color-cream:        #F0EDE6;
  --color-warm-gray:    #E8E4DD;
  --color-mid-gray:     #9B9690;
  --color-dark-gray:    #4A4540;
  --color-charcoal:     #2C2926;
  --color-near-black:   #1A1816;

  /* Semantic */
  --color-primary:      var(--color-forest);
  --color-primary-dark: var(--color-forest-dark);
  --color-primary-light:var(--color-forest-light);
  --color-accent:       var(--color-earth);
  --color-accent-light: var(--color-earth-light);
  --color-link:         var(--color-sky);
  --color-link-hover:   var(--color-sky-light);
  --color-text:         var(--color-charcoal);
  --color-text-light:   var(--color-mid-gray);
  --color-bg:           var(--color-offwhite);
  --color-surface:      var(--color-white);
  --color-border:       var(--color-warm-gray);

  /* Grade colours */
  --grade-1: #4CAF50;
  --grade-2: #8BC34A;
  --grade-3: #FFC107;
  --grade-4: #FF9800;
  --grade-5: #F44336;

  /* Typography */
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;
  --text-5xl:   3rem;
  --text-6xl:   3.75rem;

  --line-tight:   1.2;
  --line-snug:    1.375;
  --line-normal:  1.6;
  --line-relaxed: 1.75;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --container-wide: 1400px;
  --nav-height: 72px;

  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl:  0 20px 25px rgba(0,0,0,0.1), 0 8px 10px rgba(0,0,0,0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--line-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip to content — accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 10000;
  font-weight: 600;
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

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

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

a:hover {
  color: var(--color-link-hover);
}

a:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--line-tight);
  color: var(--color-near-black);
}

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

p {
  margin-bottom: var(--space-md);
}

ul, ol {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

li {
  margin-bottom: var(--space-xs);
}

blockquote {
  border-left: 4px solid var(--color-primary-light);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--color-cream);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-dark-gray);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-2xl) 0;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

/* ---------- Navigation ---------- */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-nav--transparent {
  background: rgba(0, 0, 0, 0.1);
}

.site-nav--solid {
  background: var(--color-forest-dark);
  box-shadow: var(--shadow-md);
}

.site-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-nav__brand {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-nav__brand:hover {
  color: var(--color-white);
  opacity: 0.9;
}

.site-nav__links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: var(--space-xs);
  padding: 0;
  margin: 0;
}

.site-nav__item {
  position: relative;
  margin: 0;
}

.site-nav__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.site-nav__link:hover,
.site-nav__link--active {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

/* Dropdown */
.site-nav__item--has-children:hover .site-nav__dropdown,
.site-nav__item--has-children:focus-within .site-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.site-nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  list-style: none;
  z-index: 1001;
}

.site-nav__dropdown li {
  margin: 0;
}

.site-nav__dropdown a {
  display: block;
  padding: var(--space-sm) var(--space-lg);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: 500;
}

.site-nav__dropdown a:hover {
  background: var(--color-cream);
  color: var(--color-primary);
}

/* Mobile menu toggle */
.site-nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--color-white);
}

.site-nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: currentColor;
  margin: 5px 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  border-radius: 2px;
}

@media (max-width: 768px) {
  .site-nav__toggle {
    display: block;
  }

  .site-nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-forest-dark);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-lg);
    gap: var(--space-xs);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }

  .site-nav__links--open {
    transform: translateX(0);
  }

  .site-nav__dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: none;
    border-radius: var(--radius-sm);
    margin-top: var(--space-xs);
  }

  .site-nav__dropdown a {
    color: rgba(255, 255, 255, 0.85);
    padding-left: var(--space-2xl);
  }

  .site-nav__dropdown a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
  }
}

/* ---------- Hero Banner ---------- */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-charcoal);
  margin-top: calc(-1 * var(--nav-height));
  padding-top: var(--nav-height);
}

.hero--full {
  min-height: 85vh;
}

.hero--small {
  min-height: 40vh;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.35) 0%,
    rgba(0, 0, 0, 0.5) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: calc(var(--nav-height) + var(--space-3xl)) var(--space-lg) var(--space-3xl);
  max-width: 900px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl));
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.9);
  max-width: 650px;
  margin: 0 auto;
  line-height: var(--line-relaxed);
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.3);
}

/* ---------- Page Section ---------- */
.section {
  padding: var(--space-4xl) 0;
}

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

.section--dark {
  background: var(--color-charcoal);
  color: var(--color-offwhite);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section__header h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-sm);
}

.section__header p {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ---------- Content Prose ---------- */
.prose {
  max-width: var(--container-narrow);
  margin: 0 auto;
  font-size: var(--text-lg);
  line-height: var(--line-relaxed);
}

.prose h2 {
  margin-top: var(--space-3xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.prose h2:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.prose h3 {
  margin-top: var(--space-2xl);
}

.prose img {
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
  box-shadow: var(--shadow-sm);
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.prose a:hover {
  color: var(--color-primary-dark);
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.card-grid--2col {
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
}

@media (max-width: 480px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
  .card-grid--2col {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}

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

.card__image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card__title {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--color-near-black);
}

.card__title a {
  color: inherit;
  text-decoration: none;
}

.card__title a:hover {
  color: var(--color-primary);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.card__excerpt {
  color: var(--color-dark-gray);
  font-size: var(--text-sm);
  line-height: var(--line-normal);
  flex: 1;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  background: var(--color-cream);
  color: var(--color-dark-gray);
}

.badge--grade {
  color: var(--color-white);
}

.badge--grade-1 { background: var(--grade-1); }
.badge--grade-2 { background: var(--grade-2); }
.badge--grade-3 { background: var(--grade-3); color: var(--color-near-black); }
.badge--grade-4 { background: var(--grade-4); }
.badge--grade-5 { background: var(--grade-5); }

/* ---------- Walk Detail ---------- */
.walk-info-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-2xl);
  box-shadow: var(--shadow-sm);
}

.walk-info-panel h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary-light);
}

.walk-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-lg);
}

.walk-stat {
  text-align: center;
}

.walk-stat__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

.walk-stat__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
}

.walk-stat__unit {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-light);
}

/* Walk map container */
.walk-map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin: var(--space-2xl) 0;
}

#walk-map {
  width: 100%;
  height: 500px;
}

/* Walk links */
.walk-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

/* ---------- CTA Cards (Homepage) ---------- */
.cta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

@media (max-width: 640px) {
  .cta-grid {
    grid-template-columns: 1fr;
  }
}

.cta-card {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  text-decoration: none;
}

.cta-card__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform var(--transition-slow);
}

.cta-card:hover .cta-card__bg {
  transform: scale(1.08);
}

.cta-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  transition: background var(--transition-base);
}

.cta-card:hover .cta-card__overlay {
  background: rgba(0, 0, 0, 0.35);
}

.cta-card__label {
  position: relative;
  z-index: 2;
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

/* ---------- Video Embed ---------- */
.video-section {
  background: var(--color-cream);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--space-2xl);
}

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
}

.video-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.video-card__embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
}

.video-card__embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-card__body {
  padding: var(--space-lg);
}

.video-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.video-card__desc {
  font-size: var(--text-sm);
  color: var(--color-dark-gray);
  line-height: var(--line-normal);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-white);
}

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

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

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn--white:hover {
  background: rgba(255,255,255,0.9);
  color: var(--color-primary-dark);
}

.btn--lg {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--text-base);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-charcoal);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

.site-footer h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.site-footer p {
  font-size: var(--text-sm);
  line-height: var(--line-relaxed);
  margin-bottom: var(--space-sm);
}

.site-footer a {
  color: rgba(255, 255, 255, 0.8);
}

.site-footer a:hover {
  color: var(--color-white);
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

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

.footer-logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-xl) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  margin-bottom: var(--space-xl);
}

.footer-logos img {
  height: 50px;
  width: auto;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
  filter: brightness(0) invert(1);
}

.footer-logos img:hover {
  opacity: 1;
}

.footer-bottom {
  text-align: center;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
  padding-top: var(--space-md);
}

/* ---------- FAQ Accordion ---------- */
.faq-list {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

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

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-near-black);
  text-align: left;
  line-height: var(--line-snug);
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question::after {
  content: '+';
  font-size: var(--text-2xl);
  font-weight: 300;
  color: var(--color-primary);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.faq-item--open .faq-question::after {
  content: '−';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item--open .faq-answer {
  max-height: 2000px;
  padding-bottom: var(--space-xl);
}

.faq-answer-inner {
  font-size: var(--text-base);
  line-height: var(--line-relaxed);
  color: var(--color-dark-gray);
}

.faq-answer-inner p {
  margin-bottom: var(--space-md);
}

.faq-answer-inner ul {
  margin-bottom: var(--space-md);
}

/* ---------- Project Posts Grid ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.project-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  color: inherit;
  display: block;
}

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

.project-card__body {
  padding: var(--space-lg);
}

.project-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-near-black);
}

.project-card__author {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

/* ---------- Intro Section (Homepage) ---------- */
.intro-text {
  max-width: var(--container-narrow);
  margin: 0 auto;
  text-align: center;
}

.intro-text p {
  font-size: var(--text-lg);
  line-height: var(--line-relaxed);
  color: var(--color-dark-gray);
}

.intro-text p:first-child {
  font-size: var(--text-xl);
  color: var(--color-text);
  font-weight: 500;
}

/* ---------- Suggest Walk CTA ---------- */
.suggest-cta {
  background: var(--color-cream);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  margin-top: var(--space-3xl);
}

.suggest-cta h3 {
  margin-bottom: var(--space-sm);
}

.suggest-cta p {
  max-width: 600px;
  margin: 0 auto var(--space-lg);
  color: var(--color-dark-gray);
}

/* ---------- Back Link ---------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

.back-link:hover {
  color: var(--color-primary);
}

.back-link::before {
  content: '←';
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-0  { margin-top: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-0  { margin-bottom: 0; }
.mb-lg { margin-bottom: var(--space-lg); }

/* ---------- Print ---------- */
@media print {
  .site-nav,
  .site-footer,
  .walk-map-container {
    display: none;
  }
  .hero { min-height: auto; }
  body { font-size: 12pt; }
}