/**
 * Snippet Name: Echomops Product Design (em-wrap)
 * Purpose: Load product design CSS only on product pages that contain em-wrap markup.
 * Usage: Paste into WPCode (PHP snippet) or include as a tiny must-use plugin.
 */

if (!defined('ABSPATH')) {
    exit;
}

/**
 * Check whether CSS should be loaded on this request.
 */
if (!function_exists('em_should_load_product_design_css')) {
    function em_should_load_product_design_css()
    {
        if (!function_exists('is_product') || !is_product()) {
            return false;
        }

        $post = get_post();
        if (!$post || empty($post->post_content)) {
            return false;
        }

        // Only load on product descriptions that explicitly use em-wrap.
        return strpos($post->post_content, '<div class="em-wrap"') !== false;
    }
}

/**
 * Print scoped CSS in head only when needed.
 */
if (!function_exists('em_print_product_design_css')) {
  function em_print_product_design_css()
  {
    if (!em_should_load_product_design_css()) {
      return;
    }

    $css = <<<'CSS'
.em-wrap {
  --em-ink:        #111827;
  --em-copper:     #b87333;
  --em-copper-dim: #96632d;
  --em-warm:       #f3ede4;
  --em-paper:      #faf9f6;
  --em-muted:      #6b7280;
  --em-rule:       #e5e1d8;
  --em-dark:       #161412;
  --em-dark-2:     #1f1c19;
  --em-white:      #ffffff;

  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont,
               "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--em-ink);
  background: var(--em-paper);
  -webkit-font-smoothing: antialiased;
}

.em-wrap *, .em-wrap *::before, .em-wrap *::after {
  box-sizing: border-box; margin: 0; padding: 0;
}

.em-over {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--em-copper);
  margin-bottom: 12px;
}

.em-intro {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 0;
  min-height: 400px;
  margin-bottom: 56px;
  border-top: 3px solid var(--em-copper);
}

.em-intro-text {
  padding: 44px 44px 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--em-dark);
}

.em-intro h2 {
  font-size: clamp(24px, 3.5vw, 38px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.04em;
  color: var(--em-white);
  margin-bottom: 18px;
}

.em-intro-lead {
  font-size: 16px;
  font-weight: 500;
  color: #d4cdc4;
  line-height: 1.6;
  margin-bottom: 12px;
  max-width: 50ch;
}

.em-intro p:not(.em-intro-lead) {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.7;
  max-width: 52ch;
}

.em-intro-text .em-stats {
  border-top-color: rgba(255,255,255,0.1);
  border-bottom-color: rgba(255,255,255,0.1);
}
.em-intro-text .em-stat { border-right-color: rgba(255,255,255,0.1); }
.em-intro-text .em-stat-val { color: var(--em-copper); }
.em-intro-text .em-stat-label { color: #6b7280; }

.em-intro-image {
  position: relative;
  overflow: hidden;
  background: #e8e3da;
}

.em-intro-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

.em-stats {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin: 28px 0 0;
  border-top: 1px solid var(--em-rule);
  border-bottom: 1px solid var(--em-rule);
}

.em-stat {
  flex: 1;
  padding: 14px 20px 14px 0;
  margin-right: 20px;
  border-right: 1px solid var(--em-rule);
  min-width: 0;
}

.em-stat:last-child { border-right: none; margin-right: 0; padding-right: 0; }

.em-stat-val {
  display: block;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--em-ink);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  margin-bottom: 3px;
}

.em-stat-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--em-muted);
}

.em-features {
  margin-bottom: 56px;
  border-top: 3px solid var(--em-copper);
  padding-top: 28px;
}

.em-features-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--em-copper);
  margin-bottom: 24px;
  display: block;
}

.em-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.em-feature {
  padding: 20px 28px 20px 0;
  border-right: 1px solid var(--em-rule);
  margin-right: 28px;
}

.em-feature:nth-child(3n) { border-right: none; margin-right: 0; padding-right: 0; }

.em-feature-num {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--em-copper);
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  font-variant-numeric: tabular-nums;
}

.em-feature h3 {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--em-ink);
  margin-bottom: 5px;
  text-transform: uppercase;
  line-height: 1.2;
}

.em-feature p { font-size: 13px; color: var(--em-muted); line-height: 1.6; }

.em-story { margin-bottom: 56px; }

.em-story-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--em-copper);
  padding: 0 0 20px;
  display: block;
}

.em-chapter {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-bottom: 3px;
  overflow: hidden;
}

.em-chapter:nth-child(even) { direction: rtl; }
.em-chapter:nth-child(even) > * { direction: ltr; }

.em-chapter-img {
  overflow: hidden;
  background: #dbd6ce;
  min-height: 300px;
}

.em-chapter-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
}

.em-chapter:hover .em-chapter-img img { transform: scale(1.03); }

.em-chapter-body {
  background: var(--em-dark);
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.em-chapter-body--light { background: var(--em-warm); }

.em-chapter-body .em-over { color: var(--em-copper); }
.em-chapter-body--light .em-over { color: var(--em-copper-dim); }

.em-chapter h3 {
  font-size: clamp(17px, 2.2vw, 24px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 14px;
  color: var(--em-white);
}

.em-chapter-body--light h3 { color: var(--em-ink); }

.em-chapter p { font-size: 14px; line-height: 1.75; color: #9ca3af; max-width: 42ch; }
.em-chapter-body--light p { color: #4b5563; }

.em-specs {
  margin-bottom: 56px;
  border-top: 3px solid var(--em-copper);
  padding-top: 28px;
}

.em-specs-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--em-copper);
  margin-bottom: 6px;
  display: block;
}

.em-specs-h2 {
  font-size: clamp(18px, 2.5vw, 26px);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--em-ink);
  margin-bottom: 28px;
}

.em-specs-group-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--em-copper);
  padding: 18px 0 8px;
  display: block;
  border-top: 1px solid var(--em-rule);
  margin-top: 8px;
}

.em-specs-group-label:first-of-type { border-top: none; margin-top: 0; padding-top: 0; }

.em-specs-table { width: 100%; border-collapse: collapse; }

.em-specs-table tr { border-bottom: 1px solid var(--em-rule); }
.em-specs-table tr:last-child { border-bottom: none; }

.em-specs-table td {
  padding: 10px 0;
  font-size: 14px;
  vertical-align: top;
}

.em-specs-table td:first-child {
  width: 44%;
  padding-right: 16px;
  color: var(--em-muted);
  font-weight: 400;
}

.em-specs-table td:last-child {
  color: var(--em-ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.em-faq {
  margin-bottom: 56px;
  border-top: 3px solid var(--em-copper);
  padding-top: 28px;
}

.em-faq-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--em-copper);
  margin-bottom: 6px;
  display: block;
}

.em-faq-h2 {
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--em-ink);
  margin-bottom: 24px;
}

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

.em-faq-q {
  padding: 15px 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--em-ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  user-select: none;
  letter-spacing: -0.01em;
}

.em-faq-q::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--em-copper);
  flex-shrink: 0;
  line-height: 1;
}

.em-faq-item.open .em-faq-q::after { content: '\2212'; }
.em-faq-item.open .em-faq-q { color: var(--em-copper-dim); }

.em-faq-a {
  display: none;
  padding: 0 0 16px;
  font-size: 14px;
  color: var(--em-muted);
  line-height: 1.75;
  max-width: 70ch;
}

.em-faq-item.open .em-faq-a { display: block; }

.em-source {
  border-top: 1px solid var(--em-rule);
  padding-top: 14px;
  margin-top: 4px;
}

.em-source small {
  font-size: 11.5px;
  color: #9ca3af;
  line-height: 1.7;
  display: block;
}

.em-source a { color: var(--em-copper-dim); text-decoration: none; }
.em-source a:hover { text-decoration: underline; }

@media (max-width: 820px) {
  .em-intro { grid-template-columns: 1fr; min-height: auto; }
  .em-intro-text { padding: 28px 24px 32px; order: 2; }
  .em-intro-image { min-height: 240px; order: 1; }
  .em-chapter { grid-template-columns: 1fr; }
  .em-chapter:nth-child(even) { direction: ltr; }
  .em-chapter-img { min-height: 200px; }
  .em-features-grid { grid-template-columns: 1fr 1fr; }
  .em-feature { border-right: none; padding-right: 0; margin-right: 0; border-bottom: 1px solid var(--em-rule); padding-bottom: 16px; margin-bottom: 4px; }
  .em-feature:last-child { border-bottom: none; }
}

@media (max-width: 520px) {
  .em-intro h2 { font-size: 22px; }
  .em-stats { flex-wrap: wrap; }
  .em-stat { flex: 0 0 48%; }
  .em-features-grid { grid-template-columns: 1fr; }
}
CSS;

      echo '<style id="echomops-product-design">' . "\n";
      echo $css;
      echo "\n</style>\n";
    }
}
  add_action('wp_head', 'em_print_product_design_css', 25);