/*
Theme Name: Appliance Diagnostic Clearinghouse
Theme URI: https://appliancediagnosticclearinghouse.local
Author: Appliance Diagnostic Clearinghouse Architect
Author URI: https://appliancediagnosticclearinghouse.local
Description: High-performance, technical reference WordPress theme for appliance diagnostics, manufacturer error codes, reset procedures, and verified repair guidance. Inspired by clean editorial typography and search-first layout principles.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: appliance-diagnostic-clearinghouse
Tags: diagnostic, technical, appliances, accessibility-ready, custom-menu, featured-images, full-width-template, theme-options
*/

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN SYSTEM)
   ========================================================================== */
:root {
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Color Palette - Technical Editorial */
  --color-text: #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted: #64748B;
  --color-bg: #FFFFFF;
  --color-bg-secondary: #F8FAFC;
  --color-bg-tertiary: #F1F5F9;
  --color-border: #E2E8F0;
  --color-border-subtle: #CBD5E1;

  /* Accent & State Colors */
  --color-accent: #2563EB;
  --color-accent-hover: #1D4ED8;
  --color-accent-subtle: #EFF6FF;
  --color-success: #15803D;
  --color-success-bg: #F0FDF4;
  --color-success-border: #BBF7D0;
  --color-warning-bg: #FEF3C7;
  --color-warning-text: #92400E;
  --color-warning-border: #F59E0B;
  --color-critical: #DC2626;
  --color-critical-bg: #FEF2F2;

  /* Typography Scale */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1.0625rem;/* 17px */
  --font-size-md: 1.125rem;   /* 18px */
  --font-size-lg: 1.25rem;    /* 20px */
  --font-size-xl: 1.5rem;     /* 24px */
  --font-size-2xl: 1.875rem;  /* 30px */
  --font-size-3xl: 2.25rem;   /* 36px */

  /* Spacing & Layout */
  --container-max: 1200px;
  --article-max: 820px;
  --header-height-mobile: 54px;
  --header-height-desktop: 68px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --color-text-muted: #64748B;
    --color-bg: #0B1120;
    --color-bg-secondary: #131E33;
    --color-bg-tertiary: #1E293B;
    --color-border: #243248;
    --color-border-subtle: #334155;
    --color-accent: #3B82F6;
    --color-accent-hover: #60A5FA;
    --color-accent-subtle: #172554;
    --color-success: #22C55E;
    --color-success-bg: #052E16;
    --color-success-border: #14532D;
    --color-warning-bg: #451A03;
    --color-warning-text: #FDE68A;
    --color-warning-border: #B45309;
    --color-critical: #EF4444;
    --color-critical-bg: #450A0A;
  }
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.15s ease;
}

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

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -9999px;
  left: 12px;
  background: var(--color-accent);
  color: #FFFFFF;
  padding: 8px 16px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  z-index: 99999;
  text-decoration: none;
}
.skip-link:focus {
  top: 12px;
}

/* Utility Containers */
.site-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.content-width {
  width: 100%;
  max-width: var(--article-max);
}

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

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  background-color: var(--color-bg);
  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: var(--header-height-mobile);
  gap: 1rem;
}

@media (min-width: 768px) {
  .header-inner {
    height: var(--header-height-desktop);
  }
}

.site-branding {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-size: 1.125rem;
  font-weight: bold;
}

.brand-title {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.brand-subtitle {
  display: none;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

@media (min-width: 1024px) {
  .brand-subtitle {
    display: block;
  }
}

/* Header Search Form */
.header-search {
  flex: 1;
  max-width: 380px;
  display: none;
}

@media (min-width: 840px) {
  .header-search {
    display: block;
  }
}

.header-search-form {
  position: relative;
  display: flex;
}

.header-search-input {
  width: 100%;
  padding: 0.45rem 0.75rem 0.45rem 2.25rem;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: 9999px;
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
}

.header-search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: var(--color-bg);
}

.header-search-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Header Navigation */
.header-nav {
  display: none;
}

@media (min-width: 960px) {
  .header-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }

  .nav-menu {
    display: flex;
    list-style: none;
    gap: 1.25rem;
  }

  .nav-menu a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    padding: 0.25rem 0;
  }

  .nav-menu a:hover, .nav-menu .current-menu-item > a {
    color: var(--color-accent);
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  cursor: pointer;
}

@media (min-width: 960px) {
  .btn-mobile-menu {
    display: none;
  }
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  display: none;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
  padding: 1rem 1.25rem;
}

.mobile-drawer.is-open {
  display: block;
}

.mobile-nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.mobile-nav-menu a {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

/* ==========================================================================
   HOMEPAGE COMPONENTS (BLOCKSY TRAVEL EDITORIAL TRANSLATION)
   ========================================================================== */
/* HERO SEARCH SECTION WITH RESPONSIVE FULL-WIDTH IMAGERY */
.hero-search-section {
  position: relative;
  background-color: #0B1120;
  background-image:
    linear-gradient(180deg, rgba(11, 17, 32, 0.84) 0%, rgba(15, 23, 42, 0.94) 100%),
    url('/wp-content/uploads/diagnostics/hero-mobile-bg.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  padding: 2.75rem 0 2.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

@media (min-width: 768px) {
  .hero-search-section {
    background-image:
      linear-gradient(180deg, rgba(11, 17, 32, 0.82) 0%, rgba(15, 23, 42, 0.92) 100%),
      url('/wp-content/uploads/diagnostics/hero-desktop-bg.jpg');
    background-position: center 20%;
    padding: 4rem 0 3.5rem;
  }
}

.hero-content {
  max-width: 820px;
  margin: 0 auto;
  text-align: center;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background-color: rgba(37, 99, 235, 0.35);
  color: #93C5FD;
  border: 1px solid rgba(147, 197, 253, 0.45);
  border-radius: 9999px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.hero-title {
  font-size: var(--font-size-2xl);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: #FFFFFF;
  margin-bottom: 0.85rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
}

@media (min-width: 768px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }
}

.hero-description {
  font-size: var(--font-size-base);
  color: #E2E8F0;
  line-height: 1.6;
  margin-bottom: 2rem;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

/* Search Box Hero */
.hero-search-bar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 660px;
  margin: 0 auto 1.25rem;
}

@media (min-width: 600px) {
  .hero-search-bar {
    flex-direction: row;
  }
}

.hero-search-input-wrap {
  position: relative;
  flex: 1;
}

.hero-search-input-wrap svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

.hero-search-input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.75rem;
  font-size: var(--font-size-base);
  border: 2px solid #CBD5E1;
  border-radius: var(--radius-md);
  background-color: #FFFFFF;
  color: #0F172A;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.hero-search-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.hero-search-btn {
  padding: 0.875rem 1.75rem;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 48px;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.hero-search-btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* Search suggestions pills */
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: var(--font-size-xs);
  color: #CBD5E1;
}

.hero-tag-link {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 9999px;
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 600;
  backdrop-filter: blur(8px);
  transition: all 0.15s ease;
}

.hero-tag-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* Diagnostic Simulator Card Container inside Hero */
.hero-search-section .diagnostic-simulator-card {
  background: #FFFFFF;
  color: #0F172A;
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.45);
}

/* SECTION TITLES & HEADINGS */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.section-heading-wrap h2 {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: 0.25rem;
}

.section-link {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

/* CATEGORY & BRAND CARD GRIDS */
.home-section {
  padding: 3rem 0;
}

.home-section-alt {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.grid-categories {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.category-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.category-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.category-icon {
  width: 44px;
  height: 44px;
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.category-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.category-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* BRAND LOGO / PILL GRID */
.grid-brands {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
}

.brand-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  text-align: center;
  transition: all 0.15s ease;
}

.brand-card:hover {
  border-color: var(--color-accent);
  background-color: var(--color-accent-subtle);
}

.brand-name {
  font-weight: 700;
  font-size: var(--font-size-base);
  color: var(--color-text);
}

.brand-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

/* POPULAR ERROR CODES GRID */
.grid-error-codes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.error-code-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.error-code-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.ecc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.ecc-badge {
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-weight: 800;
  font-size: var(--font-size-sm);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
}

.ecc-brand {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 600;
}

.ecc-meaning {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.ecc-symptom {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.45;
  margin-bottom: 1rem;
}

.ecc-action-prompt {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* EDITORIAL ARTICLE CARDS (BLOCKSY TRAVEL STYLE) */
.grid-articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.article-card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.article-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.article-card-header {
  padding: 1.25rem 1.25rem 0.5rem;
}

.article-card-badge-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.article-category-badge {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.article-reading-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.article-card-title {
  font-size: var(--font-size-lg);
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.article-card-title a {
  color: var(--color-text);
  text-decoration: none;
}

.article-card-title a:hover {
  color: var(--color-accent);
}

.article-card-body {
  padding: 0 1.25rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.article-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.article-author-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* TRUST & METHODOLOGY SECTION */
.trust-section {
  padding: 3rem 0;
  background-color: var(--color-bg);
}

.trust-card {
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 860px) {
  .trust-card {
    grid-template-columns: 1.2fr 2fr;
  }
}

.trust-intro h3 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.trust-intro p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.trust-points-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .trust-points-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.trust-point {
  display: flex;
  gap: 0.75rem;
}

.trust-point-icon {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.trust-point-text strong {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.trust-point-text p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.45;
}

/* ==========================================================================
   DIAGNOSTIC SUMMARY CARD (CORE UX COMPONENT)
   ========================================================================== */
.diagnostic-summary-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-left: 6px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 1.5rem 0 2rem;
  box-shadow: var(--shadow-sm);
}

@media (min-width: 600px) {
  .diagnostic-summary-card {
    padding: 1.5rem;
  }
}

.dsc-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.dsc-badge-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.dsc-eyebrow {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
}

.dsc-code-badge {
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-weight: 800;
  font-size: var(--font-size-base);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.dsc-verification-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-success);
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  padding: 2px 8px;
  border-radius: 9999px;
}

.dsc-row {
  margin-bottom: 0.75rem;
}

.dsc-meaning-row {
  margin-bottom: 1rem;
}

.dsc-meaning-text {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  line-height: 1.35;
  display: block;
  margin-top: 2px;
}

.dsc-cause-row {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.dsc-label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  display: block;
  margin-bottom: 2px;
}

.dsc-val {
  color: var(--color-text);
  font-weight: 500;
}

.dsc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem 1.25rem;
  margin: 1rem 0;
  padding: 0.75rem 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 540px) {
  .dsc-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.dsc-grid-full {
  grid-column: 1 / -1;
}

.dsc-action-panel {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  border-left: 4px solid var(--color-success);
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-top: 1rem;
}

.dsc-action-header {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--color-success);
  font-size: var(--font-size-sm);
  margin-bottom: 4px;
}

.dsc-action-text {
  font-size: var(--font-size-base);
  color: var(--color-text);
  line-height: 1.5;
  font-weight: 500;
}

/* ==========================================================================
   SINGLE DIAGNOSTIC ARTICLE LAYOUT
   ========================================================================== */
.article-header {
  margin-bottom: 1.5rem;
}

.adc-breadcrumbs {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.adc-breadcrumbs a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

.adc-breadcrumbs-separator {
  color: var(--color-border-subtle);
}

.article-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

@media (min-width: 768px) {
  .article-title {
    font-size: var(--font-size-3xl);
  }
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.single-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding: 2rem 0 4rem;
}

@media (min-width: 1024px) {
  .single-container {
    grid-template-columns: minmax(0, 1fr) 300px;
  }
}

/* Table of Contents Sticky Sidebar */
.article-sidebar {
  display: none;
}

@media (min-width: 1024px) {
  .article-sidebar {
    display: block;
  }
}

.sidebar-sticky {
  position: sticky;
  top: calc(var(--header-height-desktop) + 1.5rem);
}

.sidebar-widget {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.sidebar-widget-title {
  font-size: var(--font-size-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: var(--font-size-sm);
}

.toc-list a {
  color: var(--color-text-secondary);
  text-decoration: none;
  display: block;
  line-height: 1.4;
}

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

/* Article Body Typography */
.entry-content {
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
}

.entry-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin: 2.5rem 0 1rem;
  scroll-margin-top: 80px;
}

.entry-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin: 2rem 0 0.75rem;
  scroll-margin-top: 80px;
}

.entry-content p {
  margin-bottom: 1.25rem;
}

.entry-content ul, .entry-content ol {
  margin: 0 0 1.5rem 1.5rem;
}

.entry-content li {
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   REUSABLE ARTICLE BLOCK PATTERNS
   ========================================================================== */

/* Pattern 1: Numbered Troubleshooting Steps */
.adc-step-item {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.adc-step-num {
  width: 36px;
  height: 36px;
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: var(--font-size-base);
  flex-shrink: 0;
}

.adc-step-body h4 {
  font-size: var(--font-size-md);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.adc-step-body p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 0.75rem;
}

.adc-step-body ul {
  margin-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.adc-step-result {
  font-size: var(--font-size-sm);
  background: var(--color-bg);
  border-left: 3px solid var(--color-accent);
  padding: 0.5rem 0.75rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text);
}

/* Pattern 2: Safety Warning Callout */
.adc-safety-warning {
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-left: 5px solid var(--color-warning-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 1.75rem 0;
  display: flex;
  gap: 1rem;
}

.adc-warning-icon {
  width: 28px;
  height: 28px;
  color: var(--color-warning-text);
  flex-shrink: 0;
}

.adc-warning-content h4 {
  font-size: var(--font-size-base);
  font-weight: 800;
  color: var(--color-warning-text);
  margin-bottom: 0.35rem;
}

.adc-warning-content p {
  font-size: var(--font-size-sm);
  color: var(--color-warning-text);
  line-height: 1.5;
  margin: 0;
}

/* Pattern 3: Responsive Error-Code Table */
.adc-table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.adc-diagnostic-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  min-width: 580px;
}

.adc-diagnostic-table th {
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
  font-weight: 700;
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.adc-diagnostic-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.adc-diagnostic-table tr:hover td {
  background-color: var(--color-bg-secondary);
}

.adc-code-cell {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent);
}

/* Pattern 4: Replacement Part Card */
.adc-part-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 1.75rem 0;
}

@media (min-width: 600px) {
  .adc-part-card {
    flex-direction: row;
    align-items: center;
  }
}

.adc-part-img-wrap {
  width: 100px;
  height: 100px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-text-muted);
}

.adc-part-details {
  flex: 1;
}

.adc-part-name {
  font-size: var(--font-size-md);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.adc-part-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.adc-part-compat {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.4;
  margin-bottom: 0.75rem;
}

.adc-part-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  min-height: 44px;
}

.adc-part-btn:hover {
  background-color: var(--color-accent-hover);
  color: #FFFFFF;
}

.adc-disclosure-text {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 0.35rem;
  display: block;
}

/* Pattern 5: Native FAQ Accordion */
.adc-faq-section {
  margin: 2rem 0;
}

.adc-faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  background-color: var(--color-bg);
  overflow: hidden;
}

.adc-faq-question {
  padding: 1rem 1.25rem;
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  cursor: pointer;
  background-color: var(--color-bg-secondary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.adc-faq-question::-webkit-details-marker {
  display: none;
}

.adc-faq-question::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--color-accent);
}

.adc-faq-item[open] .adc-faq-question::after {
  content: "−";
}

.adc-faq-answer {
  padding: 1.25rem;
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* AUTHOR & REVIEWER CARD */
.adc-author-box {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 2.5rem 0;
}

.adc-author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--color-text-muted);
}

.adc-author-info h4 {
  font-size: var(--font-size-md);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.adc-author-info p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ==========================================================================
   ARCHIVE, SEARCH & 404 STYLES
   ========================================================================== */
.archive-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2rem;
}

.archive-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.archive-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: 700px;
}

.no-results-card {
  padding: 3rem 2rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-align: center;
  max-width: 640px;
  margin: 2rem auto;
}

.no-results-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.no-results-card p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

/* PAGINATION */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin: 3rem 0;
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.pagination .page-numbers.current {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

/* ==========================================================================
   FOOTER (BLOCKSY TRAVEL EDITORIAL TRANSLATION)
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.footer-main {
  padding: 3.5rem 0 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-brand-col p {
  margin: 0.75rem 0 1rem;
  line-height: 1.55;
  color: var(--color-text-secondary);
}

.footer-emergency-note {
  font-size: var(--font-size-xs);
  padding: 0.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-warning-border);
  border-radius: var(--radius-sm);
}

.footer-col-title {
  font-size: var(--font-size-base);
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

.footer-bottom {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer-bottom-inner {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   ENHANCED MOTION, INTERACTIVE SIMULATORS & PREMIUM FEEDBACK
   ========================================================================== */

/* 1. Global Reading Progress Bar */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #38BDF8);
  z-index: 99999;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.4);
}

/* 2. Floating Toast Notification */
.adc-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: #0F172A;
  color: #FFFFFF;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 99999;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.adc-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.adc-toast svg {
  color: #22C55E;
  flex-shrink: 0;
}

/* 3. Pulsing Verified OEM Badge */
.dsc-verification-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.dsc-verification-badge::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse-ring 2.2s infinite cubic-bezier(0.66, 0, 0, 1);
}
@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* 4. Interactive Hero Diagnostic Simulator */
.diagnostic-simulator-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 2rem 0 0;
  box-shadow: var(--shadow-md);
  text-align: left;
}
.sim-header-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
@media (min-width: 640px) {
  .sim-header-wrap {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}
.sim-title {
  font-size: var(--font-size-md);
  font-weight: 800;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sim-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: #FEF3C7;
  color: #B45309;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid #FDE68A;
}

.sim-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.25rem;
}
.sim-tab-btn {
  background: transparent;
  border: none;
  font-family: inherit;
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}
.sim-tab-btn:hover {
  color: var(--color-text);
}
.sim-tab-btn.is-active {
  background: var(--color-accent-subtle);
  color: var(--color-accent);
}

.sim-panel {
  display: none;
}
.sim-panel.is-active {
  display: block;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dial Stage & Controls */
.dial-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 0.75rem 0;
}
.dial-graphic-wrap {
  position: relative;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #F8FAFC, #CBD5E1);
  border: 4px solid #94A3B8;
  box-shadow: inset 0 3px 6px rgba(0, 0, 0, 0.15), 0 8px 16px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}
.dial-knob-indicator {
  position: absolute;
  top: 10px;
  width: 6px;
  height: 16px;
  background: #2563EB;
  border-radius: 3px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
.dial-center-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #64748B;
  border: 2px solid #E2E8F0;
}

.dial-controls {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  width: 100%;
  flex-wrap: wrap;
}
.dial-btn {
  padding: 0.6rem 1.1rem;
  font-weight: 700;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-sm);
}
.dial-btn:hover {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.dial-btn-reset {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

.sim-feedback-box {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  width: 100%;
  text-align: center;
}
.sim-step-indicator {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}
.sim-instruction {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* LED Indicator Strip */
.led-strip {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  margin: 1.25rem 0 0.5rem;
  flex-wrap: wrap;
}
.led-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.led-bulb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #334155;
  border: 2px solid #475569;
  transition: all 0.2s ease;
}
.led-bulb.is-lit {
  background: #22C55E;
  border-color: #16A34A;
  box-shadow: 0 0 10px #22C55E, 0 0 20px rgba(34, 197, 94, 0.6);
  animation: ledPulse 1s infinite alternate;
}
@keyframes ledPulse {
  0% { transform: scale(1); opacity: 0.85; }
  100% { transform: scale(1.15); opacity: 1; }
}
.led-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  letter-spacing: 0.05em;
}

/* Binary Decoder Panel */
.decoder-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1rem;
}
@media (min-width: 640px) {
  .decoder-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.decoder-led-selectors {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
}
.decoder-result-box {
  background: var(--color-accent-subtle);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}
.decoder-result-code {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin: 0.25rem 0;
}
.decoder-result-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 600;
  line-height: 1.4;
}

/* Copy Action Button inside Diagnostic Card */
.dsc-copy-btn {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
  margin-top: 6px;
}
.dsc-copy-btn:hover {
  background: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

/* Smooth Accordions */
details.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  padding: 1rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
details.faq-item summary::-webkit-details-marker {
  display: none;
}
details.faq-item summary:hover {
  background: var(--color-bg-tertiary);
}
details.faq-item[open] summary {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border-color: var(--color-accent);
}
details.faq-item .faq-body {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-top: none;
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
  background: var(--color-bg);
  margin-top: -0.5rem;
  margin-bottom: 0.75rem;
  animation: fadeIn 0.25s ease;
}
details.faq-item summary svg.chevron {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  flex-shrink: 0;
}
details.faq-item[open] summary svg.chevron {
  transform: rotate(180deg);
  color: var(--color-accent);
}

/* 5. Spotlight Card & Article Card Image Hover Motion */
.spotlight-card {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.spotlight-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 32px -8px rgba(15, 23, 42, 0.12);
}
@media (min-width: 860px) {
  .spotlight-grid {
    grid-template-columns: 1.15fr 1.35fr !important;
  }
}

.article-card-image img {
  transform: scale(1);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1) !important;
}
.article-card:hover .article-card-image img {
  transform: scale(1.04) !important;
}



/* ==========================================================================
   Semantic Cluster Box & Connected Diagnostics
   ========================================================================== */
.adc-semantic-cluster-box {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2.25rem 0;
  box-shadow: var(--shadow-sm);
}

.adc-cluster-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0.5rem;
}

.adc-cluster-header svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.adc-cluster-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-text);
  margin: 0;
}

.adc-cluster-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.adc-cluster-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .adc-cluster-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.adc-cluster-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.adc-cluster-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.adc-cluster-card-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 6px;
  width: fit-content;
}

.adc-cluster-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.35;
  margin-bottom: 6px;
}

.adc-cluster-card-sub {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-bottom: 8px;
}

.adc-cluster-card-cta {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}