/* ========================================
   CSS VARIABLES
======================================== */

:root {
  --bg-color: #fafafa;
  --text-color: #222;
  --text-color-muted: #555;
  --accent-color: #2f7d32;

  --font-sm: 0.875rem;   /* 14px */
  --font-md: 1.0625rem;  /* 17px (body) */
  --font-lg: 1.25rem;    /* 20px */
  --font-xl: 1.75rem;    /* 28px */
  --font-2xl: 2.25rem;   /* 36px */

  --space-2xs: 0.5rem;    /* 8px */
  --space-xs: 0.75rem;    /* 12px */
  --space-sm: 1rem;       /* 16px */
  --space-md: 1.5rem;     /* 25.5px */
  --space-lg: 2rem;       /* 34px */
  --space-xl: 3rem;       /* 51px */
  --space-2xl: 4rem;      /* 68px */


  /* line-height*/
  --leading-tight: 1.3;
  --leading-base: 1.5;
  --leading-loose: 1.7;
}

/* ========================================
   GLOBAL RESET
======================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: var(--font-md);
  line-height: var(--leading-loose);
  color: var(--text-color);
  background-color: var(--bg-color);
}

/* ========================================
   TYPOGRAPHY
======================================== */

h1 {
  font-size: var(--font-2xl);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-md);
  font-weight: 600;
}

h2 {
  font-size: var(--font-xl);
  line-height: var(--leading-tight);
  margin: 0 0 var(--space-sm);
  font-weight: 600;
}

h3 {
  font-size: var(--font-lg);
  line-height: var(--leading-tight);
  margin: var(--space-lg) 0 var(--space-xs);
  font-weight: 600;
}

h4 {
  line-height: var(--leading-tight);
  margin: var(--space-md) 0 var(--space-xs);
}

p {
  margin: 0 0 var(--space-sm);
}

a {
  color: var(--text-color);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  text-decoration-skip-ink: none;
}

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

ul,
ol {
  margin: 0 0 var(--space-md) var(--space-md);
  line-height: var(--leading-loose);
}

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

/* ========================================
   LAYOUT SYSTEM
======================================== */

/* 
Container System
.page-container = default content width (narrow 760px)
.page-container--wide = modifier for homepage/content-hubs/header/footer
Must always be used together with .page-container
*/

.page-container {
  max-width: 760px; /* Narrow reading */
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-container--wide {
  max-width: 1100px; /* Homepage & hubs */
}

.section {
  padding: var(--space-lg) 0;
}

/* ========================================
   ACCESSIBILITY / FOCUS STATES
======================================== */

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent-color);
  outline-offset: 3px;
}

/* ========================================
   ACCESSIBILITY / NAV FOCUS + TARGET SIZE
======================================== */

.site-title a,
.site-nav a,
.footer-nav a {
  min-height: 44px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 0 var(--space-2xs);
  border-radius: var(--space-2xs);
}

.site-title a {
  padding: 0 var(--space-xs);
}

.site-nav a,
.footer-nav a {
  min-width: 44px;
}

.nav-search a {
  min-width: 44px;
  min-height: 44px;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 0;
  border-radius: var(--space-2xs);
}

.site-title a:focus-visible,
.site-nav a:focus-visible,
.footer-nav a:focus-visible,
.nav-search a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-color);
  border-radius: var(--space-2xs);
}

/* ========================================
   SITE HEADER
======================================== */

.skip-link {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-xs, 0.75rem);
  z-index: 1000;

  transform: translateY(-200%);

  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  width: max-content;
  max-width: none;
  padding: var(--space-2xs, 0.5rem) var(--space-xs, 0.75rem);

  background: var(--bg-color, #fafafa);
  color: var(--accent-color, #2f7d32);
  border: 2px solid var(--accent-color, #2f7d32);
  border-radius: var(--space-2xs, 0.5rem);

  font-size: var(--font-sm, 0.875rem);
  font-weight: 700;
  line-height: var(--leading-tight, 1.3);
  text-align: center;
  text-decoration: none;

  box-shadow: 0 var(--space-2xs, 0.5rem) var(--space-xs, 0.75rem) rgba(34, 34, 34, 0.12);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid var(--text-color, #222);
  outline-offset: 3px;
}

.skip-link:hover {
  background: var(--accent-color, #2f7d32);
  color: var(--bg-color, #fafafa);
}

.skip-link span {
  display: block;
  white-space: nowrap;
}

.site-header {
  background: #fafafa;
  border-bottom: 1px solid #e6e6e6;
  padding-top: var(--space-md);
  padding-bottom: var(--space-xs);
}

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

.site-title {
  display: flex;
  align-items: center;
  transform: translateY(-2px);
}

.site-title a {
  font-size: var(--font-xl);
  font-weight: 900;
  color: var(--accent-color);
  text-decoration: none;
  line-height: 1;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-2xs);
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-weight: 500;
  color: var(--text-color);
}

.site-nav a:hover {
  color: var(--accent-color);
}

.site-nav .search-icon {
  width: 18px;
  height: 18px;
  vertical-align: middle;
}

/* ========================================
   TOP-META: For breadcrumb spacing
======================================== */

.top-meta {
  min-height: 3rem;
  display: block;
}

/* ========================================
   BREADCRUMB
======================================== */

.breadcrumb {
  font-size: var(--font-sm);
  margin-top: var(--space-2xs);
  margin-bottom: var(--space-sm);
}

.breadcrumb-list {
  list-style: none;
  padding: 0;
  margin: 0;

  display: flex;
  flex-wrap: wrap;
  gap: 0;

  line-height: var(--leading-base);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb-item::after {
  content: ">";
  margin-left: var(--space-2xs);
  margin-right: var(--space-2xs);
  color: var(--text-color-muted);
}

.breadcrumb-item:last-child::after {
  content: "";
  margin-left: 0;
  margin-right: 0;
}

.breadcrumb a {
  display: inline-flex;
  align-items: center;

  padding: 0.125rem var(--space-2xs);
  border-radius: 3px;

  color: var(--text-color);
}

.breadcrumb a:hover {
  color: var(--accent-color);
}

.breadcrumb a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-color);
  border-radius: 3px;
}

.breadcrumb-current {
  font-weight: 600;
  color: var(--text-color-muted);
}

/* ========================================
   PAGE HEADER (Hero Replacement)
======================================== */

.page-header p {
  font-size: var(--font-md);
  color: var(--text-color-muted);
  margin-bottom: var(--space-md);
}

.page-category {
  display: inline-block;
  font-size: var(--font-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-color-muted);
  margin-bottom: var(--space-sm);
}

.page-title {
  margin-bottom: var(--space-sm);
}

.page-intro {
  font-size: var(--font-md);
  line-height: var(--leading-loose);
  color: var(--text-color-muted);
}

/* ========================================
   CARD SYSTEM
======================================== */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: #fff;
  padding: var(--space-lg);
  border-radius:8px;
  border: 1px solid #e6e6e6;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: var(--accent-color);
  transition: border-color 0.15s ease;
}

.card-category {
  font-size: var(--font-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-color);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  display: inline-block;
}

.card-title {
  margin: 0 0 var(--space-xs) 0;
  font-size: var(--font-lg);
  font-weight: 600;
}


.card-description {
  font-size: var(--font-sm);
  line-height: var(--leading-base);
  color: var(--text-color-muted);
  margin-bottom: var(--space-sm);
}

.card-link {
  font-weight: 600;
}

.card:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-color);
  border-radius: 8px;
}

/* ========================================
   ARTICLE CONTENT (Guides & Comparisons)
======================================== */

.article-content {
  margin-top: var(--space-lg);
}

.article-content p a,
.article-content li a {
  border-radius: 3px;
}

.article-content p a:focus-visible,
.article-content li a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-color);
  border-radius: 3px;
}

/* ---------------------------------
   Table of Contents (Guides / Articles)
---------------------------------- */

.toc {
  margin: var(--space-xl) 0;
  padding-left: var(--space-md);
  border-left: 3px solid var(--accent-color);
  max-width: max-content;
}

.toc-title {
  margin: 0 0 var(--space-xs) 0;
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--text-color);
}

.toc-title span {
  display: inline-block;
  border-bottom: 1.5px solid var(--accent-color);
  padding-bottom: var(--space-xs);
  font-weight: 600;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  margin: var(--space-xs) 0;
}

.toc-list a {
  display: inline-flex;
  align-items: center;

  padding: 0.125rem var(--space-2xs);
  border-radius: 3px;

  color: var(--accent-color);
  text-decoration: none;
}

.toc-list a:hover {
  text-decoration: underline;
}

.toc-list a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-color);
  border-radius: 3px;
}

/* ---------------------------------
   Content Images (Guides / Articles)
---------------------------------- */

.content-image {
  margin: var(--space-lg) 0;
}

.content-image img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 4px;
}

.content-image figcaption {
  margin-top: var(--space-sm);
  font-size: var(--font-sm);
  color: var(--text-color-muted);
  line-height: var(--leading-base);
}

/* ========================================
   Affiliate Disclosure
======================================== */

.affiliate-disclosure {
  font-size: var(--font-sm);
  color: var(--text-color-muted);
  opacity: 0.85;
  line-height: var(--leading-base);
  margin-top: var(--space-md);
}

/* ========================================
   FOOTER
======================================== */

.site-footer {
  border-top: 1px solid #e6e6e6;
  padding: var(--space-xs) 0;
  font-size: var(--font-sm);
  color: var(--text-color-muted);
  background: var(--bg-color);
}

.site-footer .page-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2xs);
}

.site-footer p {
  margin: 0;
  line-height: var(--leading-base);
}

/* ---------------------------------
   Footer Navigation
---------------------------------- */

.footer-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-2xs);
  padding: 0;
  margin: 0;
}

.footer-nav a {
  color: var(--text-color-muted);
  text-decoration: none;
}

.footer-nav a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ========================================
   Related Sections at the End of Article
======================================== */

.related-articles {
  margin: 0;
}

.related-articles ul {
  padding-left: var(--space-md);
  margin: 0;
}

.related-articles a {
  display: inline-flex;
  align-items: center;

  padding: 0.125rem var(--space-2xs);
  border-radius: 3px;
}

.related-articles a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-color);
  border-radius: 3px;
}
 
/* ========================================
   VISUALLY HIDDEN
======================================== */

.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;
}

/* ========================================
   MEDIA QUERIES
======================================== */

@media (max-width: 768px) {

  h1 {
    font-size: var(--font-xl);
  }

  h2 {
    font-size: var(--font-lg);
  }

  .site-header .page-container {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }

  .site-nav ul {
    gap: var(--space-2xs);
  }

  .card {
    padding: var(--space-md);
  }

  .site-footer .page-container {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2xs);
  }

}

@media (max-width: 480px) {

  .card-grid {
    gap: var(--space-md);
  }

}