/* ==========================================================================
   Design System — Weed: A Senior's Guide
   ========================================================================== */

/* ---------- Tokens ---------- */
:root {
  --color-primary: #7C9A72;
  --color-primary-dark: #5A7A50;
  --color-bg: #F5F0E8;
  --color-surface: #FFFFFF;
  --color-text: #2D2D2D;
  --color-text-secondary: #6B6B6B;
  --color-accent: #C4A265;
  --color-cta: #4A7C59;
  --color-cta-hover: #3A6249;
  --color-border: #D4CFC7;

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  --size-base: 18px;
  --line-height: 1.7;
  --content-width: 720px;
  --container-width: 1120px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  --radius: 8px;
  --radius-lg: 12px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: var(--size-base); scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-cta); text-decoration: underline; }
a:hover { color: var(--color-cta-hover); }

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

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--color-cta);
  color: #fff;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
  z-index: 1000;
  text-decoration: none;
  font-weight: 600;
}
.skip-link:focus {
  top: var(--space-sm);
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}
.content-width {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-md);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-text);
  line-height: 1.25;
}
h1 { font-size: 2.4rem; font-weight: 700; margin-bottom: var(--space-md); }
h2 { font-size: 1.8rem; font-weight: 600; margin-top: var(--space-xl); margin-bottom: var(--space-sm); }
h3 { font-size: 1.35rem; font-weight: 600; margin-top: var(--space-lg); margin-bottom: var(--space-xs); }
p { margin-bottom: var(--space-sm); }
ul, ol { margin-bottom: var(--space-sm); padding-left: var(--space-lg); }
li { margin-bottom: var(--space-xs); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: background 0.2s, transform 0.1s;
  min-height: 48px;
  min-width: 48px;
}
.btn:active { transform: scale(0.98); }
.btn-cta {
  background: var(--color-cta);
  color: #fff;
}
.btn-cta:hover {
  background: var(--color-cta-hover);
  color: #fff;
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-cta);
  border: 2px solid var(--color-cta);
}
.btn-secondary:hover {
  background: var(--color-cta);
  color: #fff;
}
.btn-large {
  padding: var(--space-sm) var(--space-lg);
  font-size: 1.15rem;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.site-logo {
  text-decoration: none;
  color: var(--color-text);
}
.logo-text {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}
.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-md);
  padding: 0;
  margin: 0;
}
.nav-list a {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  padding: var(--space-xs) var(--space-xs);
  border-radius: var(--radius);
  transition: color 0.2s;
}
.nav-list a:hover,
.nav-list a[aria-current="page"] {
  color: var(--color-cta);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  min-height: 48px;
  min-width: 48px;
  align-items: center;
  justify-content: center;
}
.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  position: relative;
}
.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  left: 0;
}
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-3xl) 0;
  text-align: center;
}
.hero h1 {
  color: #fff;
  font-size: 2.8rem;
  max-width: 700px;
  margin: 0 auto var(--space-md);
}
.hero-subtitle {
  font-size: 1.25rem;
  opacity: 0.92;
  max-width: 560px;
  margin: 0 auto var(--space-lg);
}
.hero-ctas {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}
.hero .btn-secondary {
  background: transparent;
  border-color: #fff;
  color: #fff;
}
.hero .btn-secondary:hover {
  background: #fff;
  color: var(--color-cta);
}

/* ---------- Topic Cards ---------- */
.topic-cards {
  padding: var(--space-2xl) 0;
}
.topic-cards-heading {
  text-align: center;
  margin-bottom: var(--space-xl);
}
.topic-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
  max-width: var(--container-width);
  margin: 0 auto;
}
.topic-card {
  display: block;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-decoration: none;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s, transform 0.15s;
}
.topic-card:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  transform: translateY(-2px);
  color: var(--color-text);
}
.topic-card-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}
.topic-card-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.topic-card-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}
.topic-card-link {
  color: var(--color-cta);
  font-weight: 600;
  font-size: 0.95rem;
}

/* ---------- Book Promo ---------- */
.book-promo {
  background: var(--color-surface);
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.book-promo-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  gap: var(--space-xl);
  align-items: center;
}
.book-promo-cover {
  flex-shrink: 0;
}
.book-cover-image {
  width: 240px;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.book-promo-content h2 {
  margin-top: 0;
}

/* ---------- Newsletter Form ---------- */
.newsletter-form {
  max-width: 480px;
}
.newsletter-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}
.newsletter-input-group {
  display: flex;
  gap: var(--space-xs);
}
.newsletter-input-group input[type="email"] {
  flex: 1;
  padding: var(--space-sm);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font-body);
  min-height: 48px;
}
.newsletter-input-group input[type="email"]:focus {
  border-color: var(--color-cta);
  outline: none;
  box-shadow: 0 0 0 3px rgba(74, 124, 89, 0.2);
}
.newsletter-privacy {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}
.newsletter-success {
  padding: var(--space-sm);
  background: #e8f5e9;
  border-radius: var(--radius);
  color: var(--color-primary-dark);
  font-weight: 600;
}

/* Homepage newsletter section */
.homepage-newsletter {
  padding: var(--space-2xl) 0;
  text-align: center;
}
.homepage-newsletter .newsletter-form {
  margin: 0 auto;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
}
.cta-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}
.cta-banner-text {
  color: #fff;
  font-size: 1.1rem;
  font-weight: 500;
  margin: 0;
}
.cta-banner .btn-cta {
  background: #fff;
  color: var(--color-cta);
  white-space: nowrap;
}
.cta-banner .btn-cta:hover {
  background: var(--color-bg);
}

/* ---------- Disclaimer ---------- */
.disclaimer {
  background: var(--color-bg);
  border-left: 4px solid var(--color-accent);
  padding: var(--space-sm) var(--space-md);
  margin: var(--space-xl) 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.disclaimer p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
}

/* ---------- Guide Page ---------- */
.guide-page {
  padding-bottom: var(--space-xl);
}
.guide-content {
  margin-bottom: var(--space-lg);
}
.guide-content h2 {
  color: var(--color-primary-dark);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--space-xs);
}

/* ---------- Blog ---------- */
.blog-intro {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}
.blog-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.blog-card time {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}
.blog-card h2 {
  font-size: 1.4rem;
  margin-top: var(--space-xs);
  margin-bottom: var(--space-xs);
}
.blog-card h2 a {
  text-decoration: none;
  color: var(--color-text);
}
.blog-card h2 a:hover {
  color: var(--color-cta);
}
.blog-card p {
  color: var(--color-text-secondary);
}
.read-more {
  font-weight: 600;
  font-size: 0.95rem;
}

/* Share Buttons */
.share-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin: var(--space-lg) 0;
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--color-border);
}
.share-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s;
  min-height: 40px;
}
.share-facebook {
  color: #1877F2;
  background: rgba(24, 119, 242, 0.08);
}
.share-facebook:hover {
  background: rgba(24, 119, 242, 0.15);
  color: #1877F2;
}
.share-twitter {
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.05);
}
.share-twitter:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--color-text);
}
.share-email {
  color: var(--color-cta);
  background: rgba(74, 124, 89, 0.08);
}
.share-email:hover {
  background: rgba(74, 124, 89, 0.15);
  color: var(--color-cta);
}

/* Blog Post */
.blog-post-header {
  margin-bottom: var(--space-lg);
}
.blog-post-header time {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}
.blog-post-content {
  margin-bottom: var(--space-lg);
}

/* ---------- Book Page ---------- */
.book-page {
  padding-bottom: var(--space-xl);
}
.book-page-hero {
  display: flex;
  gap: var(--space-xl);
  align-items: flex-start;
  margin-bottom: var(--space-xl);
}
.book-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.book-toc h2 { margin-top: 0; }

/* ---------- Newsletter Page ---------- */
.newsletter-page {
  text-align: center;
}
.newsletter-page .newsletter-form {
  margin: var(--space-lg) auto;
  text-align: left;
}
.newsletter-benefits {
  text-align: left;
  max-width: 480px;
  margin: var(--space-lg) auto;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-2xl) 0 var(--space-lg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}
.site-footer h2 {
  color: #fff;
  font-size: 1.2rem;
  margin-top: 0;
  margin-bottom: var(--space-sm);
}
.site-footer a { color: var(--color-bg); }
.site-footer a:hover { color: #fff; }
.footer-nav ul {
  list-style: none;
  padding: 0;
}
.footer-nav li {
  margin-bottom: var(--space-xs);
}
.footer-network {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
}
.network-links {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}
.network-card {
  display: block;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  transition: background 0.2s;
  flex: 1;
  min-width: 200px;
}
.network-card:hover {
  background: rgba(255,255,255,0.14);
}
.network-card strong {
  display: block;
  color: #fff;
  font-size: 1rem;
  margin-bottom: 4px;
}
.network-card span {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
}
.footer-copyright {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
}
.site-footer .newsletter-input-group input[type="email"] {
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #fff;
}
.site-footer .newsletter-label {
  color: var(--color-bg);
}
.site-footer .newsletter-privacy {
  color: rgba(255,255,255,0.5);
}
.site-footer .disclaimer {
  background: rgba(255,255,255,0.05);
  border-left-color: var(--color-accent);
}
.site-footer .disclaimer p {
  color: rgba(255,255,255,0.6);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  :root {
    --size-base: 17px;
  }
  h1 { font-size: 1.9rem; }
  h2 { font-size: 1.5rem; }
  .hero h1 { font-size: 2.1rem; }
  .hero { padding: var(--space-xl) 0; }

  .mobile-menu-toggle { display: flex; }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: var(--space-sm);
  }
  .main-nav.is-open { display: block; }
  .nav-list {
    flex-direction: column;
    gap: 0;
  }
  .nav-list a {
    display: block;
    padding: var(--space-sm);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .book-promo-inner {
    flex-direction: column;
    text-align: center;
  }
  .book-page-hero {
    flex-direction: column;
  }
  .cta-banner-inner {
    flex-direction: column;
    text-align: center;
  }
  .newsletter-input-group {
    flex-direction: column;
  }
  .newsletter-input-group .btn {
    white-space: nowrap;
  }
  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }
  .hero-ctas .btn {
    width: 100%;
    max-width: 280px;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}