/*
Theme Name: usfans Field
Theme URI: https://sheetcn.com/
Author: usfans Field Team
Author URI: https://sheetcn.com/
Description: A clean, nature-inspired SEO WordPress theme for the usfans Field shopping guide. Forest green and warm peach palette with split-screen hero, built for the sheetcn.com store.
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: usfans-field
Tags: blog, e-commerce, custom-menu, custom-logo, featured-images, full-width-template, responsive-layout, seo-friendly, two-columns
*/

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  --color-bg: #f5f0eb;
  --color-surface: #ffffff;
  --color-surface-raised: #efe8e0;
  --color-accent: #2d6a4f;
  --color-accent-dark: #1b4332;
  --color-accent-soft: #d4ead8;
  --color-accent-2: #e07b54;
  --color-accent-2-dark: #b95a37;
  --color-accent-2-soft: #f8d9c6;
  --color-text: #1a2415;
  --color-text-muted: #5c6858;
  --color-text-faint: #9aa295;
  --color-border: #d8e0d2;
  --color-white: #ffffff;
  --color-black: #000000;

  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-serif: "Libre Baskerville", Georgia, "Times New Roman", serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --shadow-sm: 0 1px 2px rgba(26, 36, 21, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 36, 21, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 36, 21, 0.12);

  --container-max: 1200px;
  --transition: 180ms ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0d1a0f;
    --color-surface: #1a2d1e;
    --color-surface-raised: #243a28;
    --color-accent: #52b788;
    --color-accent-dark: #74c69d;
    --color-accent-soft: #1f3a26;
    --color-accent-2: #f4a26a;
    --color-accent-2-dark: #fbbf74;
    --color-accent-2-soft: #3a2418;
    --color-text: #e8efe6;
    --color-text-muted: #a8b4a4;
    --color-text-faint: #6e7a6c;
    --color-border: #2c3e30;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-dark); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.25rem, 4.5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p { margin: 0 0 var(--space-4); }

ul, ol { margin: 0 0 var(--space-4); padding-left: 1.25rem; }
li { margin-bottom: var(--space-2); }

blockquote {
  margin: var(--space-5) 0;
  padding: var(--space-4) var(--space-5);
  border-left: 4px solid var(--color-accent-2);
  background: var(--color-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-text-muted);
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.section { padding: var(--space-8) 0; }
.section-tight { padding: var(--space-6) 0; }

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-2-dark);
  margin-bottom: var(--space-3);
}

.eyebrow.italic {
  font-family: var(--font-serif);
  font-style: italic;
  text-transform: none;
  letter-spacing: 0;
  font-size: 1rem;
  font-weight: 400;
}

/* ============================================================
   HEADER & NAV
   ============================================================ */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 100;
}

.announce-bar {
  background: var(--color-accent);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

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

.masthead-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.brand {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.brand-dot { color: var(--color-accent); font-weight: 700; }
.brand:hover { color: var(--color-text); }

.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0 var(--space-3);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.nav-primary { display: flex; align-items: center; gap: var(--space-5); flex-wrap: wrap; }

.nav-primary > a,
.nav-primary .menu-item > a {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}
.nav-primary > a:hover,
.nav-primary .menu-item > a:hover {
  border-bottom-color: var(--color-accent);
  color: var(--color-accent);
}

.dropdown {
  position: relative;
  display: inline-block;
}
.dropdown > a::after {
  content: "▾";
  margin-left: var(--space-1);
  font-size: 0.75em;
  color: var(--color-text-muted);
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  max-height: 70vh;
  overflow-y: auto;
  z-index: 200;
}
.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text);
  border-bottom: none !important;
}
.dropdown-menu a:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark) !important;
}

.header-ctas {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }

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

.btn-cta {
  background: var(--color-accent-2);
  color: var(--color-white);
}
.btn-cta:hover { background: var(--color-accent-2-dark); color: var(--color-white); }

.btn-outline {
  background: transparent;
  border-color: var(--color-accent-2);
  color: var(--color-accent-2-dark);
}
.btn-outline:hover { background: var(--color-accent-2); color: var(--color-white); }

.btn-large { padding: var(--space-4) var(--space-6); font-size: 1.05rem; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  background: var(--color-bg);
  padding: var(--space-8) 0;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
}
.hero-text .eyebrow { margin-bottom: var(--space-4); }
.hero-text h1 {
  margin-bottom: var(--space-4);
  color: var(--color-text);
}
.hero-text .lede {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  max-width: 38ch;
}
.hero-ctas { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.hero-image {
  position: relative;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  background: var(--color-accent-soft);
}
.hero-image img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-image { aspect-ratio: 16 / 10; border-radius: var(--radius-lg); order: -1; }
  .hero-text { text-align: left; }
}

/* ============================================================
   CATEGORY GRID
   ============================================================ */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-5) var(--space-4);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-accent-soft) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text);
  transition: transform var(--transition), box-shadow var(--transition);
  min-height: 160px;
}
.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
}
.category-emoji {
  font-size: 2.5rem;
  line-height: 1;
  margin-bottom: var(--space-3);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.08));
}
.category-name {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: var(--space-2);
}
.category-arrow {
  color: var(--color-accent-2);
  font-size: 1.25rem;
  font-weight: 700;
  transition: transform var(--transition);
}
.category-card:hover .category-arrow { transform: translateX(4px); }

@media (max-width: 860px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   HOMEPAGE ARTICLE
   ============================================================ */
.home-article {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  box-shadow: var(--shadow-sm);
  max-width: 820px;
  margin: 0 auto;
}
.home-article h2 {
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}
.home-article h2:first-child { margin-top: 0; }
.home-article h3 { margin-top: var(--space-5); margin-bottom: var(--space-2); }
.home-article p { color: var(--color-text); }
.home-article a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 3px; }
.home-article a:hover { color: var(--color-accent-dark); }

@media (max-width: 600px) {
  .home-article { padding: var(--space-5); }
}

/* ============================================================
   ARTICLE CARDS GRID
   ============================================================ */
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.article-card {
  background: var(--color-surface);
  border-left: 4px solid var(--color-accent-2);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.article-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.article-number {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-accent-2-dark);
  margin-bottom: var(--space-2);
}
.article-card h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
  line-height: 1.3;
}
.article-excerpt {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: var(--space-4);
  flex-grow: 1;
}
.article-link {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-accent);
  align-self: flex-start;
}
.article-link::after { content: " →"; transition: transform var(--transition); }
.article-card:hover .article-link::after { transform: translateX(4px); }

@media (max-width: 700px) {
  .article-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   CTA STRIP
   ============================================================ */
.cta-strip {
  background: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-8) 0;
  text-align: center;
}
.cta-strip .eyebrow { color: var(--color-accent-2-soft); }
.cta-strip h2 { color: var(--color-white); margin-bottom: var(--space-4); }
.cta-strip p { color: rgba(255, 255, 255, 0.9); max-width: 50ch; margin: 0 auto var(--space-5); }
.cta-strip .btn-primary { background: var(--color-white); color: var(--color-accent-dark); }
.cta-strip .btn-primary:hover { background: var(--color-accent-2-soft); color: var(--color-accent-dark); }
.cta-strip .btn-outline { border-color: var(--color-white); color: var(--color-white); }
.cta-strip .btn-outline:hover { background: var(--color-white); color: var(--color-accent-dark); }
.cta-strip-buttons { display: flex; gap: var(--space-3); justify-content: center; flex-wrap: wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-7) 0 var(--space-5);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.footer-about p { color: rgba(255, 255, 255, 0.7); font-size: 0.9rem; margin-top: var(--space-3); }
.footer-col h4 {
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: var(--space-2); }
.footer-col a { color: rgba(255, 255, 255, 0.75); font-size: 0.9rem; }
.footer-col a:hover { color: var(--color-accent-2); }
.footer-ctas { display: flex; gap: var(--space-2); margin-top: var(--space-3); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: var(--space-4);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}
.footer-bottom a { color: var(--color-accent-2); }

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-5); }
}

/* ============================================================
   GUIDE ARTICLE PAGE
   ============================================================ */
.guide-header {
  background: var(--color-surface);
  padding: var(--space-7) 0 var(--space-6);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}
.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb-sep { margin: 0 var(--space-2); color: var(--color-accent-2); }
.guide-eyebrow {
  color: var(--color-accent-2-dark);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}
.guide-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: var(--space-3);
  max-width: 24ch;
  margin-left: auto;
  margin-right: auto;
}
.guide-rule {
  width: 80px;
  height: 4px;
  background: var(--color-accent);
  margin: 0 auto;
  border-radius: var(--radius-pill);
}

.guide-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-7);
  padding: var(--space-7) 0;
  align-items: start;
}
.guide-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-7);
  box-shadow: var(--shadow-sm);
}
.guide-content h2 { margin-top: var(--space-6); margin-bottom: var(--space-3); }
.guide-content h2:first-child { margin-top: 0; }
.guide-content h3 { margin-top: var(--space-5); margin-bottom: var(--space-2); }
.guide-content a { color: var(--color-accent); text-decoration: underline; text-underline-offset: 3px; }

.guide-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.sidebar-box {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}
.sidebar-box h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.sidebar-box ul { list-style: none; padding: 0; }
.sidebar-box li { margin-bottom: var(--space-2); }
.sidebar-box a { color: var(--color-text); font-size: 0.9rem; }
.sidebar-box a:hover { color: var(--color-accent); }
.sidebar-cta-box { background: var(--color-accent); color: var(--color-white); }
.sidebar-cta-box h3 { color: var(--color-white); }
.sidebar-cta-box p { color: rgba(255, 255, 255, 0.9); font-size: 0.9rem; margin-bottom: var(--space-4); }
.sidebar-cta-box .btn-cta { background: var(--color-white); color: var(--color-accent-dark); }
.sidebar-cta-box .btn-cta:hover { background: var(--color-accent-2-soft); }
.sidebar-cta-box .btn-outline { border-color: var(--color-white); color: var(--color-white); }
.sidebar-cta-box .btn-outline:hover { background: var(--color-white); color: var(--color-accent-dark); }

.related-guides { padding: var(--space-6) 0 var(--space-8); }
.related-guides-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: var(--space-4);
  text-align: center;
}

@media (max-width: 900px) {
  .guide-layout { grid-template-columns: 1fr; }
  .guide-content { padding: var(--space-5); }
}

/* ============================================================
   MOBILE NAV
   ============================================================ */
.nav-toggle { display: none; }
.nav-toggle-label {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--color-text);
  padding: var(--space-2);
}

@media (max-width: 760px) {
  .nav-toggle-label { display: inline-block; }
  .nav-primary {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    padding: var(--space-4) 0;
    gap: var(--space-3);
  }
  .nav-primary > a,
  .nav-primary .menu-item > a { width: 100%; }
  .dropdown { width: 100%; }
  .dropdown > a { width: 100%; }
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    padding-left: var(--space-4);
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .dropdown:hover .dropdown-menu,
  .dropdown:focus-within .dropdown-menu { max-height: 500px; }
  .nav-toggle:checked ~ .nav-row .nav-primary { display: flex; }
  .header-ctas { display: none; }
  .nav-toggle:checked ~ .nav-row .header-ctas { display: flex; padding-top: var(--space-3); }
  .masthead-inner { padding-bottom: var(--space-3); }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-2) var(--space-3);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 999;
}
.skip-link:focus { left: 0; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}