/*
Theme Name: CarOnline
Theme URI: https://caronline.net
Author: CarOnline Team
Author URI: https://caronline.net
Description: Standalone modern WordPress theme for CarOnline.net — Thai automotive news, EV calculator, car reviews. Dark mode default, Sarabun font, mobile-first.
Version: 1.3.3
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: Proprietary
License URI: https://caronline.net
Text Domain: caronline
*/

/* =============================================================================
   0. DESIGN TOKENS
   ============================================================================= */

:root {
  /* Brand & primary */
  --co-primary:      #2563eb;
  --co-primary-dk:   #1d4ed8;
  --co-primary-lt:   #dbeafe;

  /* EV accent */
  --co-accent-ev:    #16a34a;
  --co-accent-ev-lt: #dcfce7;

  /* Layout surfaces */
  --co-bg:           #f5f5f5;
  --co-surface:      #ffffff;
  --co-text:         #111111;
  --co-text-muted:   #555555;
  --co-border:       #e0e0e0;

  /* Navigation */
  --co-nav-bg:       #1e293b;
  --co-topnav-bg:    #e12029;

  /* Brand red */
  --co-brand-red:    #e12029;
  --co-brand-red-dk: #b81620;

  /* Shadows */
  --co-shadow:       0 2px 8px rgba(0,0,0,0.08);

  /* Typography */
  --co-font-body: 'Sarabun', 'Noto Sans Thai', Arial, sans-serif;
  --co-font-size: 17px;
  --co-line-height: 1.7;

  /* Spacing scale */
  --co-space-xs: 0.25rem;
  --co-space-sm: 0.5rem;
  --co-space-md: 1rem;
  --co-space-lg: 1.5rem;
  --co-space-xl: 2rem;
  --co-space-2xl: 3rem;

  /* Border radius */
  --co-radius-sm: 4px;
  --co-radius-md: 8px;
  --co-radius-lg: 12px;
  --co-radius-pill: 9999px;

  /* Transitions */
  --co-transition: 200ms ease;
}

/* Dark mode tokens */
[data-theme="dark"] {
  --co-bg:         #0f172a;
  --co-surface:    #1e293b;
  --co-text:       #f1f5f9;
  --co-text-muted: #c4d0db;
  --co-border:     #334155;
  --co-nav-bg:     #0f172a;
  --co-topnav-bg:  #1e293b;
  --co-shadow:     0 2px 8px rgba(0,0,0,0.4);
}

/* =============================================================================
   1. GLOBAL RESET
   ============================================================================= */

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

/* =============================================================================
   2. BASE STYLES
   ============================================================================= */

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--co-font-body);
  font-size: var(--co-font-size);
  line-height: var(--co-line-height);
  background-color: var(--co-bg);
  color: var(--co-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  word-break: break-word;
}

a {
  color: var(--co-primary);
  text-decoration: none;
  transition: color var(--co-transition);
}

a:hover,
a:focus {
  color: var(--co-primary-dk);
  text-decoration: underline;
}

[data-theme="dark"] a {
  color: #ff7070;
}

[data-theme="dark"] a:hover,
[data-theme="dark"] a:focus {
  color: #ff9090;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: var(--co-text);
}

/* =============================================================================
   3. SKIP LINK (Accessibility)
   ============================================================================= */

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 9999;
  background: var(--co-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--co-radius-md) 0;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
  top: 0;
  width: auto;
  height: auto;
  outline: 3px solid #fff;
  outline-offset: 2px;
}

/* =============================================================================
   4. LAYOUT CONTAINER
   ============================================================================= */

.co-container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--co-space-md);
  padding-right: var(--co-space-md);
}

.co-site-wrap {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.co-main-content {
  flex: 1;
  padding: var(--co-space-xl) 0;
}

/* =============================================================================
   5. TOP BAR
   ============================================================================= */

#co-topbar {
  background: var(--co-topnav-bg);
  color: rgba(255,255,255,0.9);
  font-size: 0.78rem;
  padding: 0.3rem 0;
  line-height: 1.4;
}

.co-topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--co-space-sm);
}

.co-topbar-tagline {
  font-weight: 500;
  letter-spacing: 0.01em;
}

.co-topbar-date {
  opacity: 0.85;
  white-space: nowrap;
}

/* =============================================================================
   6. HEADER
   ============================================================================= */

#co-header {
  background: var(--co-surface);
  border-bottom: 1px solid var(--co-border);
  box-shadow: var(--co-shadow);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.co-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--co-space-md);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

/* Logo */
.co-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.co-logo:hover,
.co-logo:focus {
  text-decoration: none;
  opacity: 0.9;
}

.co-logo img {
  height: 44px;
  width: auto;
}

.co-logo-text {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.co-logo-text .car {
  color: var(--co-brand-red);
}

.co-logo-text .online {
  color: var(--co-text);
}

/* Header right group: search + dark toggle */
.co-header-right {
  display: flex;
  align-items: center;
  gap: var(--co-space-sm);
  flex: 1;
  justify-content: flex-end;
}

/* =============================================================================
   7. SEARCH FORM (pill style)
   ============================================================================= */

.co-search-form {
  display: flex;
  align-items: center;
  background: var(--co-bg);
  border: 1.5px solid var(--co-border);
  border-radius: var(--co-radius-pill);
  position: relative;
  transition: border-color var(--co-transition), box-shadow var(--co-transition);
  max-width: 340px;
  width: 100%;
}

.co-search-form:focus-within {
  border-color: var(--co-primary);
  box-shadow: 0 0 0 3px var(--co-primary-lt);
}

.co-search-input {
  border: none;
  background: transparent;
  padding: 0.4rem 0.75rem;
  font-size: 0.9rem;
  color: var(--co-text);
  flex: 1;
  min-width: 0;
  outline: none;
}

.co-search-input::placeholder {
  color: var(--co-text-muted);
}

.co-search-btn {
  background: none;
  border: none;
  padding: 0.4rem 0.75rem;
  color: var(--co-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  font-size: 1rem;
  transition: color var(--co-transition);
}

.co-search-btn:hover {
  color: var(--co-primary);
}

.co-search-suggestions {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 40;
  width: min(420px, 90vw);
  background: var(--co-surface);
  border: 1px solid var(--co-border);
  border-radius: var(--co-radius-md);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.16);
  overflow: hidden;
}

.co-search-suggestions[hidden] {
  display: none;
}

.co-search-suggestions__label {
  padding: 0.55rem 0.75rem 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--co-text-muted);
  text-transform: uppercase;
}

.co-search-suggestion {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 0.7rem;
  align-items: center;
  padding: 0.6rem 0.75rem;
  color: var(--co-text);
  text-decoration: none;
}

.co-search-suggestion:hover,
.co-search-suggestion:focus {
  background: var(--co-primary-lt);
  text-decoration: none;
}

.co-search-suggestion img,
.co-search-suggestion__placeholder {
  width: 52px;
  aspect-ratio: 16 / 10;
  border-radius: var(--co-radius-sm);
  object-fit: cover;
  background: linear-gradient(135deg, var(--co-primary-lt), var(--co-border));
}

.co-search-suggestion strong,
.co-search-suggestion small {
  display: block;
}

.co-search-suggestion strong {
  font-size: 0.86rem;
  line-height: 1.35;
}

.co-search-suggestion small {
  color: var(--co-text-muted);
  font-size: 0.74rem;
  margin-top: 0.15rem;
}

/* =============================================================================
   8. DARK MODE TOGGLE
   ============================================================================= */

#co-dark-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--co-bg);
  border: 1.5px solid var(--co-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-family: Arial, sans-serif;
  font-size: 1.1rem;
  color: var(--co-text);
  transition: background var(--co-transition), border-color var(--co-transition), transform var(--co-transition);
  flex-shrink: 0;
  line-height: 1;
  padding: 0;
}

#co-dark-toggle:hover {
  background: var(--co-primary-lt);
  border-color: var(--co-primary);
  transform: scale(1.1);
}

#co-dark-toggle:focus-visible {
  outline: 3px solid var(--co-primary);
  outline-offset: 2px;
}

.co-icon-sun,
.co-icon-moon {
  display: none;
  line-height: 1;
}

/* =============================================================================
   9. NAVIGATION BAR
   ============================================================================= */

#co-navbar {
  background: var(--co-nav-bg);
  position: relative;
}

.co-navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Nav hamburger toggle */
#co-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  padding: 0.6rem var(--co-space-sm);
  cursor: pointer;
  line-height: 1;
}

#co-nav-toggle:focus-visible {
  outline: 2px solid var(--co-primary);
  outline-offset: 2px;
}

/* Primary nav list */
#co-nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

#co-nav-menu > li {
  position: relative;
}

#co-nav-menu > li > a {
  display: block;
  padding: 0.9rem 1rem;
  color: rgba(255,255,255,0.9);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--co-transition), background var(--co-transition);
  border-bottom: 3px solid transparent;
}

#co-nav-menu > li > a:hover,
#co-nav-menu > li > a:focus,
#co-nav-menu > li.current-menu-item > a,
#co-nav-menu > li.current-menu-ancestor > a {
  color: #fff;
  background: rgba(255,255,255,0.08);
  border-bottom-color: var(--co-brand-red);
  text-decoration: none;
}

/* Dropdown sub-menus */
#co-nav-menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--co-surface);
  border: 1px solid var(--co-border);
  border-radius: 0 0 var(--co-radius-md) var(--co-radius-md);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  min-width: 180px;
  display: none;
  z-index: 999;
  list-style: none;
  padding: var(--co-space-xs) 0;
}

#co-nav-menu li:hover > .sub-menu,
#co-nav-menu li:focus-within > .sub-menu {
  display: block;
}

#co-nav-menu .sub-menu li a {
  display: block;
  padding: 0.55rem 1.1rem;
  color: var(--co-text);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background var(--co-transition), color var(--co-transition);
  border-left: 3px solid transparent;
}

#co-nav-menu .sub-menu li a:hover,
#co-nav-menu .sub-menu li a:focus {
  background: var(--co-bg);
  color: var(--co-primary);
  border-left-color: var(--co-primary);
  text-decoration: none;
}

[data-theme="dark"] #co-nav-menu .sub-menu li a:hover,
[data-theme="dark"] #co-nav-menu .sub-menu li a:focus {
  color: #ff7070;
  border-left-color: #ff7070;
}

/* =============================================================================
   10. HERO SECTION
   ============================================================================= */

.co-hero {
  position: relative;
  border-radius: var(--co-radius-lg);
  overflow: hidden;
  margin-bottom: var(--co-space-xl);
  display: block;
  text-decoration: none;
  min-height: 420px;
}

.co-hero:hover,
.co-hero:focus {
  text-decoration: none;
}

.co-hero-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
  transition: transform 400ms ease;
}

.co-hero:hover .co-hero-img {
  transform: scale(1.02);
}

.co-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.85) 0%,
    rgba(0,0,0,0.45) 50%,
    rgba(0,0,0,0.1) 100%
  );
}

.co-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--co-space-xl) var(--co-space-xl) var(--co-space-lg);
  color: #fff;
}

.co-hero-title {
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  margin-top: var(--co-space-sm);
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.co-hero-meta {
  font-size: 0.85rem;
  opacity: 0.8;
  margin-top: var(--co-space-xs);
}

.co-hero-no-image {
  min-height: 420px;
  background: var(--co-nav-bg);
  display: flex;
  align-items: flex-end;
}

/* =============================================================================
   11. CATEGORY BADGE
   ============================================================================= */

.co-badge {
  display: inline-block;
  padding: 0.2em 0.65em;
  border-radius: var(--co-radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;
  background: var(--badge-color, var(--co-primary));
  line-height: 1.5;
  white-space: nowrap;
}

.co-badge:hover,
.co-badge:focus {
  filter: brightness(1.15);
  text-decoration: none;
  color: #fff;
}

/* Badge color cycling (set via inline style --badge-color) */

/* =============================================================================
   12. CARD GRID
   ============================================================================= */

.co-content-area {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--co-space-xl);
  align-items: start;
}

.co-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--co-space-lg);
}

/* Post card */
.co-card {
  background: var(--co-surface);
  border-radius: var(--co-radius-lg);
  overflow: hidden;
  box-shadow: var(--co-shadow);
  border: 1px solid var(--co-border);
  transition: transform var(--co-transition), box-shadow var(--co-transition);
  display: flex;
  flex-direction: column;
}

.co-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.14);
}

.co-card-thumb-wrap {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--co-bg);
  flex-shrink: 0;
}

.co-card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 350ms ease;
}

.co-card:hover .co-card-thumb {
  transform: scale(1.04);
}

.co-card-thumb-placeholder {
  width: 100%;
  height: 100%;
  background: var(--co-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--co-text-muted);
  font-size: 2rem;
}

.co-card-body {
  padding: var(--co-space-md);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: var(--co-space-xs);
}

.co-card-badge {
  margin-bottom: var(--co-space-xs);
}

.co-card-title {
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--co-text);
  /* 2-line clamp */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-decoration: none;
}

.co-card-title-link {
  color: inherit;
  text-decoration: none;
}

.co-card-title-link:hover,
.co-card-title-link:focus {
  color: var(--co-primary);
  text-decoration: none;
}

[data-theme="dark"] .co-card-title-link:hover,
[data-theme="dark"] .co-card-title-link:focus {
  color: #ff7070;
}

.co-card-meta {
  font-size: 0.8rem;
  color: var(--co-text-muted);
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.6rem;
  align-items: center;
}

.co-card-meta-sep {
  opacity: 0.5;
}

/* =============================================================================
   13. PAGINATION
   ============================================================================= */

.co-pagination {
  margin-top: var(--co-space-xl);
  display: flex;
  justify-content: center;
  gap: var(--co-space-sm);
  flex-wrap: wrap;
}

.co-pagination a,
.co-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  border-radius: var(--co-radius-md);
  background: var(--co-surface);
  border: 1px solid var(--co-border);
  color: var(--co-text);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--co-transition), border-color var(--co-transition), color var(--co-transition);
}

.co-pagination a:hover {
  background: var(--co-primary);
  border-color: var(--co-primary);
  color: #fff;
  text-decoration: none;
}

.co-pagination .current {
  background: var(--co-primary);
  border-color: var(--co-primary);
  color: #fff;
}

/* =============================================================================
   14. SIDEBAR
   ============================================================================= */

.co-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--co-space-lg);
}

.co-widget {
  background: var(--co-surface);
  border-radius: var(--co-radius-lg);
  border: 1px solid var(--co-border);
  box-shadow: var(--co-shadow);
  overflow: hidden;
}

.co-widget-title {
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--co-space-sm) var(--co-space-md);
  background: var(--co-nav-bg);
  color: #fff;
  border-bottom: 3px solid var(--co-brand-red);
}

.co-widget-body {
  padding: var(--co-space-md);
}

/* WordPress default widget styles */
.widget ul {
  list-style: none;
}

.widget ul li {
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--co-border);
  font-size: 0.9rem;
}

.widget ul li:last-child {
  border-bottom: none;
}

.widget ul li a {
  color: var(--co-text);
}

.widget ul li a:hover {
  color: var(--co-primary);
}

/* =============================================================================
   15. SINGLE ARTICLE
   ============================================================================= */

.co-article-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--co-space-xl);
  align-items: start;
}

/* Breadcrumb */
.co-breadcrumb {
  font-size: 0.85rem;
  color: var(--co-text-muted);
  margin-bottom: var(--co-space-md);
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  align-items: center;
}

.co-breadcrumb a {
  color: var(--co-text-muted);
  text-decoration: none;
}

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

[data-theme="dark"] .co-breadcrumb a:hover {
  color: #ff7070;
}

.co-breadcrumb-sep {
  opacity: 0.5;
}

/* Article header */
.co-article-header {
  margin-bottom: var(--co-space-lg);
}

.co-article-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.3;
  margin: var(--co-space-sm) 0 var(--co-space-md);
  color: var(--co-text);
}

.co-article-meta {
  font-size: 0.85rem;
  color: var(--co-text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
  margin-bottom: var(--co-space-lg);
}

.co-article-featured-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--co-radius-lg);
  margin-bottom: var(--co-space-xl);
}

/* Article body typography */
.entry-content {
  max-width: 680px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.85;
  color: var(--co-text);
}

.entry-content p {
  margin-bottom: 1.4em;
}

.entry-content h2 {
  font-size: 1.5rem;
  margin: 1.8em 0 0.6em;
  color: var(--co-text);
}

.entry-content h3 {
  font-size: 1.2rem;
  margin: 1.5em 0 0.5em;
  color: var(--co-text);
}

.entry-content h4 {
  font-size: 1.05rem;
  margin: 1.3em 0 0.4em;
  color: var(--co-text);
}

.entry-content ul,
.entry-content ol {
  margin-bottom: 1.2em;
  padding-left: 1.6em;
  list-style: disc;
}

.entry-content ol {
  list-style: decimal;
}

.entry-content li {
  margin-bottom: 0.4em;
}

.entry-content blockquote {
  border-left: 4px solid var(--co-brand-red);
  padding: 0.8em 1.2em;
  font-style: italic;
  color: var(--co-text-muted);
  margin: 1.5em 0;
  background: var(--co-bg);
  border-radius: 0 var(--co-radius-md) var(--co-radius-md) 0;
}

.entry-content pre,
.entry-content code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9em;
  background: var(--co-bg);
  padding: 0.2em 0.4em;
  border-radius: var(--co-radius-sm);
  color: var(--co-text);
}

.entry-content pre {
  padding: 1em 1.2em;
  overflow-x: auto;
  border: 1px solid var(--co-border);
  margin-bottom: 1.4em;
}

.entry-content pre code {
  background: none;
  padding: 0;
}

.entry-content img {
  border-radius: var(--co-radius-md);
  margin: 1em 0;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.4em;
  font-size: 0.95em;
}

.entry-content th,
.entry-content td {
  border: 1px solid var(--co-border);
  padding: 0.5em 0.8em;
  text-align: left;
}

.entry-content th {
  background: var(--co-bg);
  font-weight: 600;
}

/* =============================================================================
   16. SOCIAL SHARING
   ============================================================================= */

.co-sharing {
  margin: var(--co-space-xl) 0;
  padding-top: var(--co-space-lg);
  border-top: 1px solid var(--co-border);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.co-sharing-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--co-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--co-space-sm);
}

.co-sharing-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--co-space-sm);
}

.co-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: var(--co-radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  transition: opacity var(--co-transition), transform var(--co-transition);
  border: none;
  cursor: pointer;
}

.co-share-btn:hover,
.co-share-btn:focus {
  opacity: 0.88;
  transform: translateY(-1px);
  text-decoration: none;
  color: #fff;
}

[data-theme="dark"] .co-share-btn:hover,
[data-theme="dark"] .co-share-btn:focus {
  color: #fff;
}

.co-share-btn--facebook { background: #1877f2; }
.co-share-btn--line     { background: #06c755; }
.co-share-btn--x        { background: #000; }
.co-share-btn--copy     { background: var(--co-text-muted); color: #fff; }

/* =============================================================================
   17. RELATED POSTS
   ============================================================================= */

.co-related {
  margin-top: var(--co-space-2xl);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.co-related-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--co-space-lg);
  padding-bottom: var(--co-space-sm);
  border-bottom: 2px solid var(--co-brand-red);
  color: var(--co-text);
}

.co-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--co-space-md);
}

/* =============================================================================
   18. COMMENTS
   ============================================================================= */

.co-comments {
  margin-top: var(--co-space-2xl);
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.co-comments .comment-list {
  list-style: none;
}

.co-comments .comment {
  padding: var(--co-space-md) 0;
  border-bottom: 1px solid var(--co-border);
}

.co-comments .comment-meta {
  font-size: 0.85rem;
  color: var(--co-text-muted);
  margin-bottom: var(--co-space-sm);
}

.co-comments .comment-form input,
.co-comments .comment-form textarea {
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 1.5px solid var(--co-border);
  border-radius: var(--co-radius-md);
  background: var(--co-surface);
  color: var(--co-text);
  margin-bottom: var(--co-space-sm);
  transition: border-color var(--co-transition);
}

.co-comments .comment-form input:focus,
.co-comments .comment-form textarea:focus {
  outline: none;
  border-color: var(--co-primary);
  box-shadow: 0 0 0 3px var(--co-primary-lt);
}

.co-comments .comment-form .submit {
  background: var(--co-primary);
  color: #fff;
  padding: 0.6rem 1.5rem;
  border-radius: var(--co-radius-pill);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background var(--co-transition);
}

.co-comments .comment-form .submit:hover {
  background: var(--co-primary-dk);
}

/* =============================================================================
   19. ARCHIVE / SEARCH PAGES
   ============================================================================= */

.co-archive-header {
  margin-bottom: var(--co-space-xl);
  padding-bottom: var(--co-space-lg);
  border-bottom: 2px solid var(--co-brand-red);
}

.co-archive-title {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--co-text);
}

.co-archive-desc {
  font-size: 0.95rem;
  color: var(--co-text-muted);
  margin-top: var(--co-space-sm);
}

.co-archive-count {
  font-size: 0.85rem;
  color: var(--co-text-muted);
  margin-top: var(--co-space-xs);
}

/* Search results */
.co-search-hero {
  background: var(--co-surface);
  border-bottom: 1px solid var(--co-border);
  margin: calc(var(--co-space-xl) * -1) 0 var(--co-space-xl);
  padding: var(--co-space-xl) 0;
}

.co-search-hero__content {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.co-search-hero__eyebrow {
  margin: 0 0 var(--co-space-xs);
  color: var(--co-brand-red);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.co-search-hero__title {
  margin: 0;
  color: var(--co-text);
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  line-height: 1.25;
}

.co-search-hero__count {
  margin: var(--co-space-xs) 0 0;
  color: var(--co-text-muted);
  font-size: 0.9rem;
}

.co-advanced-search {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 150px 160px 120px auto auto;
  gap: var(--co-space-sm);
  align-items: center;
  margin-top: var(--co-space-lg);
}

.co-advanced-search__input,
.co-advanced-search__select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--co-border);
  border-radius: var(--co-radius-md);
  background: var(--co-bg);
  color: var(--co-text);
  font: inherit;
}

.co-advanced-search__input {
  padding: 0.55rem 0.75rem;
}

.co-advanced-search__select {
  padding: 0.55rem 0.65rem;
}

.co-advanced-search__input:focus,
.co-advanced-search__select:focus {
  border-color: var(--co-primary);
  outline: 3px solid var(--co-primary-lt);
}

.co-advanced-search__submit,
.co-advanced-search__clear {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--co-radius-md);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.co-advanced-search__submit {
  border: 1px solid var(--co-primary);
  background: var(--co-primary);
  color: #fff;
  cursor: pointer;
  padding: 0 1rem;
}

.co-advanced-search__submit:hover,
.co-advanced-search__submit:focus {
  background: var(--co-primary-dk);
  border-color: var(--co-primary-dk);
}

.co-advanced-search__clear {
  color: var(--co-text-muted);
  padding: 0 0.3rem;
}

.co-popular-searches {
  display: flex;
  flex-wrap: wrap;
  gap: var(--co-space-sm);
  align-items: center;
  margin-top: var(--co-space-md);
}

.co-popular-searches span {
  color: var(--co-text-muted);
  font-size: 0.85rem;
}

.co-popular-searches a {
  border: 1px solid var(--co-border);
  border-radius: var(--co-radius-pill);
  color: var(--co-text);
  background: var(--co-bg);
  font-size: 0.86rem;
  line-height: 1;
  padding: 0.45rem 0.75rem;
  text-decoration: none;
}

.co-popular-searches a:hover,
.co-popular-searches a:focus {
  border-color: var(--co-primary);
  color: var(--co-primary);
  text-decoration: none;
}

.co-search-results-info {
  margin-bottom: var(--co-space-lg);
  font-size: 0.95rem;
  color: var(--co-text-muted);
}

.co-search-result-list {
  display: grid;
  gap: var(--co-space-md);
}

.co-search-result-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--co-space-md);
  align-items: stretch;
  background: var(--co-surface);
  border: 1px solid var(--co-border);
  border-radius: var(--co-radius-md);
  box-shadow: var(--co-shadow);
  overflow: hidden;
}

.co-search-result-card__media {
  display: block;
  min-height: 148px;
  background: var(--co-bg);
}

.co-search-result-card__image {
  width: 100%;
  height: 100%;
  min-height: 148px;
  object-fit: cover;
  display: block;
}

.co-search-result-card__placeholder {
  width: 100%;
  height: 100%;
  min-height: 148px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--co-nav-bg), var(--co-primary));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0;
}

.co-search-result-card__body {
  min-width: 0;
  padding: var(--co-space-md) var(--co-space-md) var(--co-space-md) 0;
}

.co-search-result-card__category {
  color: var(--co-brand-red);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--co-space-xs);
  text-decoration: none;
}

.co-search-result-card__title {
  font-size: 1.15rem;
  line-height: 1.35;
  margin: 0 0 var(--co-space-xs);
}

.co-search-result-card__title a {
  color: var(--co-text);
  text-decoration: none;
}

.co-search-result-card__title a:hover,
.co-search-result-card__title a:focus {
  color: var(--co-primary);
}

.co-search-result-card__excerpt {
  color: var(--co-text-muted);
  font-size: 0.94rem;
  line-height: 1.65;
  margin: 0 0 var(--co-space-sm);
}

.co-search-result-card__meta {
  display: flex;
  gap: var(--co-space-xs);
  color: var(--co-text-muted);
  font-size: 0.82rem;
}

.co-no-results {
  text-align: center;
  padding: var(--co-space-2xl) var(--co-space-xl);
  background: var(--co-surface);
  border-radius: var(--co-radius-lg);
  border: 1px solid var(--co-border);
}

.co-no-results h2 {
  font-size: 1.3rem;
  margin-bottom: var(--co-space-md);
  color: var(--co-text);
}

/* =============================================================================
   20. STATIC PAGES
   ============================================================================= */

.co-page-content {
  max-width: 780px;
  margin: 0 auto;
}

.co-page-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--co-space-lg);
  color: var(--co-text);
}

/* =============================================================================
   21. 404 PAGE
   ============================================================================= */

.co-404-wrap {
  text-align: center;
  padding: var(--co-space-2xl) var(--co-space-xl);
  max-width: 600px;
  margin: 0 auto;
}

.co-404-code {
  font-size: 8rem;
  font-weight: 900;
  line-height: 1;
  color: var(--co-border);
  margin-bottom: var(--co-space-lg);
}

.co-404-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--co-space-md);
  color: var(--co-text);
}

.co-404-desc {
  color: var(--co-text-muted);
  margin-bottom: var(--co-space-xl);
}

.co-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--co-radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background var(--co-transition), transform var(--co-transition);
  cursor: pointer;
}

.co-btn--primary {
  background: var(--co-primary);
  color: #fff;
  border: 2px solid var(--co-primary);
}

.co-btn--primary:hover,
.co-btn--primary:focus {
  background: var(--co-primary-dk);
  border-color: var(--co-primary-dk);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
}

[data-theme="dark"] .co-btn--primary:hover,
[data-theme="dark"] .co-btn--primary:focus {
  color: #fff;
}

/* =============================================================================
   22. FOOTER
   ============================================================================= */

#co-footer {
  background: var(--co-nav-bg);
  color: var(--co-text-muted);
  margin-top: auto;
  border-top: 3px solid var(--co-brand-red);
}

.co-footer-main {
  padding: var(--co-space-2xl) 0 var(--co-space-xl);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--co-space-xl);
}

/* Footer column 1 */
.co-footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--co-space-md);
}

.co-footer-logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  line-height: 1;
}

.co-footer-logo .car {
  color: var(--co-brand-red);
}

.co-footer-logo .online {
  color: #fff;
}

.co-footer-logo:hover,
.co-footer-logo:focus {
  text-decoration: none;
  opacity: 0.9;
}

.co-footer-tagline {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--co-text-muted);
}

.co-footer-social {
  display: flex;
  gap: var(--co-space-sm);
  flex-wrap: wrap;
}

.co-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  transition: background var(--co-transition), color var(--co-transition), transform var(--co-transition);
  border: 1px solid rgba(255,255,255,0.15);
}

.co-social-link:hover,
.co-social-link:focus {
  background: var(--co-brand-red);
  color: #fff;
  transform: translateY(-2px);
  text-decoration: none;
}

[data-theme="dark"] .co-social-link:hover,
[data-theme="dark"] .co-social-link:focus {
  color: #fff;
}

.co-social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Footer column 2 */
.co-footer-links h3 {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--co-space-md);
}

.co-footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.co-footer-nav a {
  color: var(--co-text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color var(--co-transition);
}

.co-footer-nav a:hover,
.co-footer-nav a:focus {
  color: #fff;
  text-decoration: none;
}

[data-theme="dark"] .co-footer-nav a:hover,
[data-theme="dark"] .co-footer-nav a:focus {
  color: #fff;
}

/* Footer column 3 */
.co-footer-widgets h3 {
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--co-space-md);
}

.co-footer-recent-posts {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--co-space-sm);
}

.co-footer-recent-posts li {
  border-bottom: 1px solid rgba(255,255,255,0.07);
  padding-bottom: var(--co-space-sm);
}

.co-footer-recent-posts li:last-child {
  border-bottom: none;
}

.co-footer-recent-posts a {
  color: var(--co-text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--co-transition);
}

.co-footer-recent-posts a:hover,
.co-footer-recent-posts a:focus {
  color: #fff;
  text-decoration: none;
}

[data-theme="dark"] .co-footer-recent-posts a:hover {
  color: #fff;
}

/* Footer bottom bar */
.co-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: var(--co-space-md) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  gap: var(--co-space-md);
  flex-wrap: wrap;
}

.co-footer-copyright {
  color: rgba(255,255,255,0.45);
}

.co-footer-version {
  font-size: 0.72rem;
  opacity: 0.5;
  margin-left: 0.5em;
  font-variant-numeric: tabular-nums;
}

.co-back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: rgba(255,255,255,0.45);
  text-decoration: none;
  font-size: 0.82rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--co-radius-pill);
  border: 1px solid rgba(255,255,255,0.15);
  transition: color var(--co-transition), border-color var(--co-transition), background var(--co-transition);
}

.co-back-to-top:hover,
.co-back-to-top:focus {
  color: #fff;
  border-color: rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.07);
  text-decoration: none;
}

[data-theme="dark"] .co-back-to-top:hover {
  color: #fff;
}

/* =============================================================================
   23. EV CALCULATOR
   ============================================================================= */

.co-calc-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 var(--co-space-md);
}

.co-calc-card {
  background: var(--co-surface);
  border-radius: var(--co-radius-lg);
  padding: var(--co-space-xl);
  box-shadow: var(--co-shadow);
  border: 1px solid var(--co-border);
}

.co-calc-card h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--co-space-sm);
  color: var(--co-text);
}

.co-calc-eyebrow {
  margin: 0 0 var(--co-space-xs);
  color: var(--co-brand-red);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.co-calc-subtitle {
  color: var(--co-text-muted);
  margin-bottom: var(--co-space-xl);
  font-size: 0.95rem;
}

.co-calc-copy {
  color: var(--co-text-muted);
  margin: 0 0 var(--co-space-lg);
  font-size: 0.95rem;
}

.co-calc-form {
  display: grid;
  gap: var(--co-space-md);
}

.co-calc-fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--co-space-md);
  margin-bottom: var(--co-space-md);
}

.co-calc-field-full {
  grid-column: 1 / -1;
}

.co-calc-card label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--co-text-muted);
  margin-bottom: 0.3rem;
}

.co-calc-hint {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  color: var(--co-text-muted);
}

.co-calc-card input,
.co-calc-card select {
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 1.5px solid var(--co-border);
  border-radius: var(--co-radius-md);
  background: var(--co-bg);
  color: var(--co-text);
  font-size: 0.95rem;
  transition: border-color var(--co-transition);
  -webkit-appearance: none;
  appearance: none;
}

.co-calc-card input:focus,
.co-calc-card select:focus {
  outline: none;
  border-color: var(--co-primary);
  box-shadow: 0 0 0 3px var(--co-primary-lt);
}

.co-calc-card button#co-calc-btn {
  width: 100%;
  padding: 0.85rem;
  background: var(--co-accent-ev);
  color: #fff;
  border: none;
  border-radius: var(--co-radius-md);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  margin-top: var(--co-space-md);
  transition: background var(--co-transition), transform var(--co-transition);
}

.co-calc-card button#co-calc-btn:hover {
  background: #15803d;
  transform: translateY(-1px);
}

.co-calc-card button#co-calc-btn:focus-visible {
  outline: 3px solid var(--co-accent-ev);
  outline-offset: 2px;
}

.co-calc-noscript {
  margin-top: var(--co-space-md);
  padding: 0.9rem 1rem;
  border-radius: var(--co-radius-md);
  background: var(--co-accent-ev-lt);
  color: var(--co-text);
  font-size: 0.9rem;
}

[data-theme="dark"] .co-calc-noscript {
  background: rgba(22, 163, 74, 0.15);
}

.co-calc-results {
  display: none;
  margin-top: var(--co-space-xl);
}

.co-calc-results.visible {
  display: block;
}

.co-calc-savings {
  text-align: center;
  padding: var(--co-space-lg);
  background: var(--co-accent-ev-lt);
  border-radius: var(--co-radius-lg);
  margin-bottom: var(--co-space-lg);
}

[data-theme="dark"] .co-calc-savings {
  background: rgba(22, 163, 74, 0.15);
}

.co-calc-savings__label {
  font-size: 0.9rem;
  color: var(--co-accent-ev);
  font-weight: 600;
  margin-bottom: var(--co-space-xs);
}

.co-calc-savings__amount {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--co-accent-ev);
  line-height: 1.1;
}

.co-calc-savings__period {
  font-size: 0.82rem;
  color: var(--co-text-muted);
  margin-top: var(--co-space-xs);
}

.co-calc-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--co-space-sm);
  margin-bottom: var(--co-space-lg);
}

.co-calc-summary > div {
  background: var(--co-bg);
  border: 1px solid var(--co-border);
  border-radius: var(--co-radius-md);
  padding: 0.8rem 0.9rem;
}

.co-calc-summary span {
  display: block;
  color: var(--co-text-muted);
  font-size: 0.78rem;
  margin-bottom: 0.2rem;
}

.co-calc-summary strong {
  color: var(--co-text);
  font-size: 1rem;
}

.co-calc-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--co-space-lg);
  background: var(--co-bg);
  border: 1px solid var(--co-border);
  border-radius: var(--co-radius-md);
  overflow: hidden;
}

.co-calc-table th,
.co-calc-table td {
  padding: 0.8rem 0.9rem;
  border-bottom: 1px solid var(--co-border);
  text-align: left;
  font-size: 0.92rem;
}

.co-calc-table th {
  background: rgba(37, 99, 235, 0.06);
  color: var(--co-text);
  font-weight: 700;
}

.co-calc-table tr:last-child td {
  border-bottom: none;
}

.co-calc-chart-wrap,
#co-calc-chart-wrap {
  position: relative;
  height: 280px;
  margin-bottom: var(--co-space-lg);
}

.co-calc-share {
  text-align: center;
}

.co-calc-share a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: #06c755;
  color: #fff;
  padding: 0.65rem 1.4rem;
  border-radius: var(--co-radius-pill);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: background var(--co-transition), transform var(--co-transition);
}

.co-calc-share a:hover,
.co-calc-share a:focus {
  background: #059445;
  transform: translateY(-1px);
  text-decoration: none;
  color: #fff;
}

[data-theme="dark"] .co-calc-share a:hover {
  color: #fff;
}

/* =============================================================================
   24. FOCUS STYLES (Accessibility)
   ============================================================================= */

:focus-visible {
  outline: 3px solid var(--co-primary);
  outline-offset: 2px;
  border-radius: var(--co-radius-sm);
}

/* =============================================================================
   25. REDUCED MOTION
   ============================================================================= */

@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;
  }
}

/* =============================================================================
   26. RESPONSIVE BREAKPOINTS
   ============================================================================= */

/* Tablet: 768px */
@media (max-width: 768px) {
  /* Nav */
  #co-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #co-nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    background: var(--co-nav-bg);
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  #co-nav-menu.is-open {
    display: flex;
  }

  #co-nav-menu > li {
    width: 100%;
  }

  #co-nav-menu > li > a {
    padding: 0.75rem var(--co-space-md);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    border-right: none;
  }

  #co-nav-menu .sub-menu {
    position: static;
    box-shadow: none;
    border-radius: 0;
    border: none;
    border-top: 1px solid rgba(255,255,255,0.06);
    background: rgba(0,0,0,0.2);
    display: none;
  }

  #co-nav-menu .sub-menu.is-open {
    display: block;
  }

  #co-nav-menu .sub-menu li a {
    color: rgba(255,255,255,0.7);
    padding-left: 2rem;
  }

  #co-nav-menu .sub-menu li a:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
  }

  /* Layout */
  .co-content-area,
  .co-article-wrap {
    grid-template-columns: 1fr;
  }

  .co-card-grid,
  .co-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .co-footer-main {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hero */
  .co-hero-img {
    height: 300px;
  }

  .co-hero-content {
    padding: var(--co-space-lg) var(--co-space-md) var(--co-space-md);
  }

  /* Search form */
  .co-search-form {
    max-width: 200px;
  }

  .co-advanced-search {
    grid-template-columns: 1fr 1fr;
  }

  .co-advanced-search__input,
  .co-advanced-search__submit,
  .co-advanced-search__clear {
    grid-column: 1 / -1;
  }

  .co-search-result-card {
    grid-template-columns: 160px 1fr;
  }

  /* EV calculator */
  .co-calc-fields {
    grid-template-columns: 1fr;
  }

  .co-calc-summary {
    grid-template-columns: 1fr;
  }
}

/* Mobile: 480px */
@media (max-width: 480px) {
  .co-card-grid,
  .co-related-grid {
    grid-template-columns: 1fr;
  }

  .co-footer-main {
    grid-template-columns: 1fr;
  }

  .co-footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--co-space-sm);
  }

  .co-hero-img {
    height: 240px;
  }

  .co-header-inner {
    flex-wrap: wrap;
  }

  .co-search-form {
    max-width: 100%;
    order: 3;
    flex: 1 1 100%;
  }

  .co-search-suggestions {
    left: 0;
    right: auto;
    width: 100%;
  }

  .co-search-hero {
    margin-top: calc(var(--co-space-lg) * -1);
    padding: var(--co-space-lg) 0;
  }

  .co-advanced-search,
  .co-search-result-card {
    grid-template-columns: 1fr;
  }

  .co-search-result-card__media,
  .co-search-result-card__image,
  .co-search-result-card__placeholder {
    min-height: 190px;
  }

  .co-search-result-card__body {
    padding: var(--co-space-md);
  }

  .co-topbar-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.1rem;
  }

  .co-sharing-buttons {
    flex-direction: column;
  }

  .co-share-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Large screens: 1400px+ */
@media (min-width: 1400px) {
  .co-container {
    max-width: 1340px;
  }
}

/* =====================================================================
   AD CARDS — same card shell as .co-card, labeled โฆษณา
   ===================================================================== */

.co-card--ad {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 9;
  background: var(--co-bg);
  border-radius: var(--co-radius-lg);
  border: 1px solid var(--co-border);
  box-shadow: var(--co-shadow);
}

/* Any image inside an ad card fills and crops to fit */
.co-card--ad img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* Linked banners fill the full card area */
.co-card--ad a {
  display: block;
  width: 100%;
  height: 100%;
}

/* "โฆษณา" badge — bottom-right, translucent */
.co-ad-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  padding: 2px 7px;
  border-radius: 3px;
  pointer-events: none;
  z-index: 2;
}

/* Sidebar ad widget */
.co-widget--ad {
  position: relative;
  overflow: hidden;
  padding: 0;
}

.co-widget--ad img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.co-widget--ad a {
  display: block;
}

.co-ad-badge--sidebar {
  position: absolute;
  bottom: 6px;
  right: 6px;
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  padding: 2px 6px;
  border-radius: 3px;
  pointer-events: none;
}

/* =====================================================================
   ARCHIVE HERO BANNER — colored by category, dot-pattern overlay
   ===================================================================== */

.co-archive-hero {
  background-color: var(--hero-color, #1e293b);
  background-image: linear-gradient(160deg, var(--hero-color, #1e293b) 0%, rgba(0,0,0,0.45) 100%);
  padding: 56px 0 44px;
  margin-bottom: 40px;
  position: relative;
  overflow: hidden;
}

/* Subtle dot grid texture */
.co-archive-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
}

.co-archive-hero .co-container {
  position: relative;
  z-index: 1;
}

.co-archive-hero__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 10px;
}

.co-archive-hero__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin: 0 0 12px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.co-archive-hero__desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 580px;
  line-height: 1.65;
  margin-bottom: 16px;
}

.co-archive-hero__count {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
  margin: 0;
}

/* Remove old plain archive header (replaced by hero) */
.co-archive-header { display: none; }