/*
Theme Name: TechCrunch
Theme URI: https://example.com/techcrunch-starter
Author: developer_starter
Author URI: https://example.com
Description: A modern tech news theme with bold green accents and clean typography. Inspired by leading technology news websites with minimalist design approach.
Version: 1.0.2
Requires at least: 5.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: techcrunch
Tags: blog, news, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, one-column, two-columns
*/

/* ==========================================================================
   Variables
   ========================================================================== */

:root {
    --tcch-primary: #0a8935;
    --tcch-primary-light: #0aa43e;
    --tcch-primary-bright: #68f176;
    --tcch-secondary: #5631ea;
    --tcch-accent: #f2f673;

    --tcch-black: #212623;
    --tcch-dark: #050505;
    --tcch-gray: #6c7571;
    --tcch-gray-light: #b5c0bc;
    --tcch-gray-lighter: #edf1ef;
    --tcch-white: #ffffff;

    --tcch-nav-bg: var(--tcch-white);
    --tcch-nav-text: var(--tcch-black);
    --tcch-footer-bg: var(--tcch-dark);
    --tcch-footer-text: var(--tcch-white);

    --tcch-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --tcch-font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --tcch-font-display: var(--tcch-font-heading);
    --tcch-font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

    --tcch-size-base: 17px;
    --tcch-size-sm: 14px;
    --tcch-size-xs: 12px;
    --tcch-size-h1: clamp(2rem, 5vw, 3.5rem);
    --tcch-size-h2: clamp(1.5rem, 3vw, 2rem);
    --tcch-size-h3: 1.375rem;
    --tcch-size-h4: 1.125rem;

    --tcch-line-height: 1.6;
    --tcch-line-heading: 1.2;

    --tcch-radius: 0;
    --tcch-radius-sm: 4px;

    --tcch-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --tcch-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);

    --tcch-space-xs: 4px;
    --tcch-space-sm: 8px;
    --tcch-space-md: 16px;
    --tcch-space-lg: 24px;
    --tcch-space-xl: 40px;
    --tcch-space-2xl: 64px;

    --tcch-container: 1200px;
    --tcch-content: 720px;
    --tcch-sidebar: 300px;
}

/* ==========================================================================
   Base
   ========================================================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--tcch-font-body);
    font-size: var(--tcch-size-base);
    line-height: var(--tcch-line-height);
    color: var(--tcch-black);
    background: var(--tcch-white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--tcch-font-display);
    font-weight: 700;
    line-height: var(--tcch-line-heading);
    margin: 0 0 var(--tcch-space-md);
    color: var(--tcch-black);
}

h1 { font-size: var(--tcch-size-h1); font-weight: 800; }
h2 { font-size: var(--tcch-size-h2); }
h3 { font-size: var(--tcch-size-h3); }
h4 { font-size: var(--tcch-size-h4); }

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

a {
    color: var(--tcch-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--tcch-primary-light);
    text-decoration: underline;
}

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

ul, ol {
    margin: 0 0 var(--tcch-space-lg);
    padding-left: var(--tcch-space-lg);
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.tcch-skip-nav {
    position: absolute;
    top: -50px;
    left: 0;
    background: var(--tcch-primary);
    color: var(--tcch-white);
    padding: var(--tcch-space-sm) var(--tcch-space-md);
    z-index: 9999;
    font-weight: 600;
}

.tcch-skip-nav:focus {
    top: 0;
    outline: 3px solid var(--tcch-accent);
}

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

:focus-visible {
    outline: 2px solid var(--tcch-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.tcch-wrapper {
    max-width: var(--tcch-container);
    margin: 0 auto;
    padding: 0 var(--tcch-space-md);
}

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

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

.tcch-grid {
    display: grid;
    grid-template-columns: 1fr var(--tcch-sidebar);
    gap: var(--tcch-space-xl);
}

.tcch-grid--full {
    grid-template-columns: 1fr;
    max-width: var(--tcch-content);
    margin: 0 auto;
}

.tcch-grid--left {
    grid-template-columns: var(--tcch-sidebar) 1fr;
}

.tcch-grid--left .tcch-aside {
    order: -1;
}

/* ==========================================================================
   Header
   ========================================================================== */

.tcch-header {
    background: var(--tcch-nav-bg);
    border-bottom: 1px solid var(--tcch-gray-lighter);
    position: sticky;
    top: 0;
    z-index: 100;
}

.tcch-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--tcch-space-lg);
}

.tcch-logo a {
    display: flex;
    align-items: center;
    color: var(--tcch-black);
    font-family: var(--tcch-font-display);
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.tcch-logo a:hover {
    color: var(--tcch-primary);
    text-decoration: none;
}

.tcch-logo img {
    height: 32px;
    width: auto;
}

.tcch-logo__tagline {
    display: none;
    font-size: var(--tcch-size-xs);
    color: var(--tcch-gray);
    font-weight: 400;
    margin-left: var(--tcch-space-sm);
}

.tcch-nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.tcch-nav__list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--tcch-space-xs);
}

.tcch-nav__list a {
    display: block;
    padding: var(--tcch-space-sm) var(--tcch-space-md);
    color: var(--tcch-black);
    font-size: var(--tcch-size-sm);
    font-weight: 500;
    border-radius: var(--tcch-radius-sm);
    transition: background 0.15s ease;
}

.tcch-nav__list a:hover,
.tcch-nav__list .current-menu-item a {
    background: var(--tcch-gray-lighter);
    text-decoration: none;
}

.tcch-header__search {
    display: flex;
    align-items: center;
}

.tcch-header__search input {
    width: 180px;
    padding: var(--tcch-space-sm) var(--tcch-space-md);
    border: 1px solid var(--tcch-gray-light);
    border-radius: var(--tcch-radius-sm);
    font-size: var(--tcch-size-sm);
    transition: border-color 0.15s ease;
}

.tcch-header__search input:focus {
    outline: none;
    border-color: var(--tcch-primary);
}

.tcch-menu-btn {
    display: none;
    background: none;
    border: none;
    padding: var(--tcch-space-sm);
    cursor: pointer;
    font-size: 24px;
    color: var(--tcch-black);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.tcch-footer {
    background: var(--tcch-footer-bg);
    color: var(--tcch-footer-text);
    padding: var(--tcch-space-2xl) 0 var(--tcch-space-xl);
}

.tcch-footer__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--tcch-space-xl);
    margin-bottom: var(--tcch-space-xl);
}

.tcch-footer__col h4 {
    color: var(--tcch-white);
    font-size: var(--tcch-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--tcch-space-md);
}

.tcch-footer__col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tcch-footer__col li {
    margin-bottom: var(--tcch-space-sm);
}

.tcch-footer__col a {
    color: var(--tcch-gray-light);
    font-size: var(--tcch-size-sm);
}

.tcch-footer__col a:hover {
    color: var(--tcch-white);
}

.tcch-footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--tcch-space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--tcch-space-md);
}

.tcch-copyright {
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray-light);
}

.tcch-footer__nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--tcch-space-lg);
}

.tcch-footer__nav a {
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray-light);
}

/* ==========================================================================
   Articles / Cards
   ========================================================================== */

.tcch-posts {
    display: flex;
    flex-direction: column;
}

.tcch-article {
    padding: var(--tcch-space-lg) 0;
    border-bottom: 1px solid var(--tcch-gray-lighter);
}

.tcch-article:first-child {
    padding-top: 0;
}

.tcch-article--featured {
    padding: var(--tcch-space-xl) 0;
    border-bottom: 3px solid var(--tcch-primary);
    margin-bottom: var(--tcch-space-md);
}

/* Featured article with thumbnail - wider text area */
.tcch-article--featured.tcch-article--has-thumb {
    grid-template-columns: 1fr minmax(200px, 45%);
    gap: var(--tcch-space-xl);
    align-items: center;
}

.tcch-article--featured.tcch-article--has-thumb .tcch-article__thumb {
    order: 1;
}

.tcch-article--featured.tcch-article--has-thumb .tcch-article__thumb img {
    aspect-ratio: 16/10;
    max-width: 100%;
}

.tcch-article__category {
    display: inline-block;
    font-family: var(--tcch-font-display);
    font-size: var(--tcch-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tcch-primary);
    margin-bottom: var(--tcch-space-sm);
}

.tcch-article__category a {
    color: inherit;
}

.tcch-article__category a:hover {
    text-decoration: underline;
}

.tcch-article__title {
    font-size: var(--tcch-size-h3);
    margin-bottom: var(--tcch-space-sm);
    line-height: 1.3;
}

.tcch-article--featured .tcch-article__title {
    font-size: var(--tcch-size-h2);
}

.tcch-article__title a {
    color: var(--tcch-black);
}

.tcch-article__title a:hover {
    color: var(--tcch-primary);
    text-decoration: none;
}

.tcch-article__excerpt {
    color: var(--tcch-gray);
    font-size: var(--tcch-size-base);
    line-height: 1.6;
    margin-bottom: var(--tcch-space-md);
}

.tcch-article__excerpt a {
    color: var(--tcch-secondary);
}

.tcch-article__meta {
    display: flex;
    align-items: center;
    gap: var(--tcch-space-md);
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray);
}

.tcch-article__author {
    font-weight: 500;
    color: var(--tcch-black);
}

.tcch-article__thumb {
    margin-bottom: var(--tcch-space-md);
}

.tcch-article__thumb img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.tcch-sticky-label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--tcch-primary);
    color: var(--tcch-white);
    font-size: var(--tcch-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 8px;
    margin-bottom: var(--tcch-space-sm);
}

/* With Image Layout */
.tcch-article--has-thumb {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: var(--tcch-space-lg);
    align-items: start;
}

.tcch-article--has-thumb .tcch-article__thumb {
    margin: 0;
    order: 1;
}

.tcch-article--has-thumb .tcch-article__thumb img {
    aspect-ratio: 4/3;
}

/* ==========================================================================
   Single Post
   ========================================================================== */

.tcch-single__header {
    max-width: var(--tcch-content);
    margin: 0 auto var(--tcch-space-xl);
    text-align: center;
}

.tcch-single__category {
    margin-bottom: var(--tcch-space-md);
}

.tcch-single__title {
    font-size: var(--tcch-size-h1);
    margin-bottom: var(--tcch-space-md);
}

.tcch-single__meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--tcch-space-sm) var(--tcch-space-lg);
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray);
}

.tcch-single__meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tcch-single__excerpt {
    max-width: var(--tcch-content);
    margin: var(--tcch-space-lg) auto;
    padding: var(--tcch-space-lg);
    background: var(--tcch-gray-lighter);
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--tcch-gray);
    border-left: 4px solid var(--tcch-primary);
}

.tcch-single__excerpt a {
    color: var(--tcch-secondary);
}

.tcch-single__image {
    margin-bottom: var(--tcch-space-xl);
}

.tcch-single__image img {
    width: 100%;
}

.tcch-entry {
    max-width: var(--tcch-content);
    margin: 0 auto;
}

.tcch-entry h2, .tcch-entry h3 {
    margin-top: var(--tcch-space-xl);
}

.tcch-entry blockquote {
    margin: var(--tcch-space-lg) 0;
    padding: var(--tcch-space-md) var(--tcch-space-lg);
    border-left: 4px solid var(--tcch-primary);
    background: var(--tcch-gray-lighter);
    font-style: italic;
}

.tcch-entry pre {
    background: var(--tcch-dark);
    color: var(--tcch-gray-lighter);
    padding: var(--tcch-space-md);
    overflow-x: auto;
    font-family: var(--tcch-font-mono);
    font-size: var(--tcch-size-sm);
}

.tcch-entry code {
    background: var(--tcch-gray-lighter);
    padding: 2px 6px;
    font-family: var(--tcch-font-mono);
    font-size: 0.9em;
}

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

.tcch-tags {
    margin-top: var(--tcch-space-xl);
    padding-top: var(--tcch-space-lg);
    border-top: 1px solid var(--tcch-gray-lighter);
}

.tcch-tags span {
    font-weight: 600;
    margin-right: var(--tcch-space-sm);
}

.tcch-tags a {
    display: inline-block;
    background: var(--tcch-gray-lighter);
    padding: 4px 12px;
    margin: 4px;
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray);
    border-radius: var(--tcch-radius-sm);
}

.tcch-tags a:hover {
    background: var(--tcch-primary);
    color: var(--tcch-white);
    text-decoration: none;
}

/* Author Box */
.tcch-author-box {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    margin-top: var(--tcch-space-xl);
    padding: var(--tcch-space-lg);
    background: var(--tcch-gray-lightest);
    border-radius: var(--tcch-radius);
}

.tcch-author-box__avatar img { width: 80px; height: 80px; border-radius: 50%; }
.tcch-author-box__info { flex: 1; }
.tcch-author-box__name { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.25rem; }
.tcch-author-box__name a { color: var(--tcch-dark); }
.tcch-author-box__name a:hover { color: var(--tcch-primary); }
.tcch-author-box__bio { font-size: 0.9375rem; color: var(--tcch-gray); }

/* Post Navigation */
.tcch-post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--tcch-space-lg);
    margin-top: var(--tcch-space-xl);
    padding-top: var(--tcch-space-xl);
    border-top: 1px solid var(--tcch-gray-lighter);
}

.tcch-post-nav__item {
    padding: var(--tcch-space-md);
    background: var(--tcch-gray-lighter);
}

.tcch-post-nav__item--next {
    text-align: right;
}

.tcch-post-nav__label {
    font-size: var(--tcch-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tcch-gray);
    margin-bottom: var(--tcch-space-xs);
}

.tcch-post-nav__link {
    font-weight: 600;
    color: var(--tcch-black);
}

.tcch-post-nav__link:hover {
    color: var(--tcch-primary);
}

/* ==========================================================================
   Related Posts
   ========================================================================== */

.tcch-related {
    margin-top: var(--tcch-space-xl);
    padding-top: var(--tcch-space-xl);
    border-top: 1px solid var(--tcch-gray-lighter);
}

.tcch-related__title {
    font-size: var(--tcch-size-h4);
    margin-bottom: var(--tcch-space-lg);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

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

.tcch-related__item {
    border-bottom: 2px solid var(--tcch-gray-lighter);
    padding-bottom: var(--tcch-space-md);
}

.tcch-related__item:hover {
    border-color: var(--tcch-primary);
}

.tcch-related__item-title {
    font-size: var(--tcch-size-base);
    margin: 0 0 var(--tcch-space-xs);
    line-height: 1.4;
}

.tcch-related__item-title a {
    color: var(--tcch-black);
}

.tcch-related__item-title a:hover {
    color: var(--tcch-primary);
    text-decoration: none;
}

.tcch-related__item-date {
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray);
}

/* ==========================================================================
   Sidebar
   ========================================================================== */

.tcch-aside .widget {
    margin-bottom: var(--tcch-space-xl);
    padding-bottom: var(--tcch-space-lg);
    border-bottom: 1px solid var(--tcch-gray-lighter);
}

.tcch-aside .widget-title {
    font-size: var(--tcch-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--tcch-gray);
    margin-bottom: var(--tcch-space-md);
    padding-bottom: var(--tcch-space-sm);
    border-bottom: 2px solid var(--tcch-primary);
}

.tcch-aside .widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tcch-aside .widget li {
    padding: var(--tcch-space-sm) 0;
    border-bottom: 1px solid var(--tcch-gray-lighter);
}

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

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.tcch-breadcrumbs {
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray);
    margin-bottom: var(--tcch-space-lg);
    font-family: var(--tcch-font-mono);
}

.tcch-breadcrumbs a {
    color: var(--tcch-gray);
}

.tcch-breadcrumbs a:hover {
    color: var(--tcch-primary);
}

.tcch-breadcrumbs__sep {
    margin: 0 var(--tcch-space-sm);
    color: var(--tcch-gray-light);
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.tcch-pagination {
    display: flex;
    justify-content: center;
    gap: var(--tcch-space-xs);
    margin-top: var(--tcch-space-xl);
    font-family: var(--tcch-font-display);
}

.tcch-pagination a,
.tcch-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 var(--tcch-space-sm);
    background: var(--tcch-gray-lighter);
    font-weight: 500;
}

.tcch-pagination a:hover {
    background: var(--tcch-primary);
    color: var(--tcch-white);
    text-decoration: none;
}

.tcch-pagination .current {
    background: var(--tcch-primary);
    color: var(--tcch-white);
}

/* ==========================================================================
   Archive
   ========================================================================== */

.tcch-archive__header {
    margin-bottom: var(--tcch-space-xl);
    padding-bottom: var(--tcch-space-lg);
    border-bottom: 3px solid var(--tcch-primary);
}

.tcch-archive__title {
    font-size: var(--tcch-size-h2);
    margin-bottom: var(--tcch-space-xs);
}

.tcch-archive__desc {
    color: var(--tcch-gray);
}

/* ==========================================================================
   Search
   ========================================================================== */

.tcch-search-form {
    display: flex;
    gap: var(--tcch-space-sm);
    margin-bottom: var(--tcch-space-lg);
}

.tcch-search-form input[type="search"] {
    flex: 1;
    padding: var(--tcch-space-md);
    border: 2px solid var(--tcch-gray-lighter);
    font-size: var(--tcch-size-base);
}

.tcch-search-form input:focus {
    outline: none;
    border-color: var(--tcch-primary);
}

.tcch-search-form button {
    padding: var(--tcch-space-md) var(--tcch-space-lg);
    background: var(--tcch-primary);
    color: var(--tcch-white);
    border: none;
    font-weight: 600;
    cursor: pointer;
}

.tcch-search-form button:hover {
    background: var(--tcch-primary-light);
}

.tcch-no-results {
    text-align: center;
    padding: var(--tcch-space-2xl);
    background: var(--tcch-gray-lighter);
}

/* ==========================================================================
   404
   ========================================================================== */

.tcch-error-page {
    text-align: center;
    padding: var(--tcch-space-2xl) 0;
    max-width: 600px;
    margin: 0 auto;
}

.tcch-error-page__code {
    font-size: 120px;
    font-weight: 800;
    color: var(--tcch-primary);
    line-height: 1;
    margin-bottom: var(--tcch-space-md);
}

.tcch-error-page__title {
    font-size: var(--tcch-size-h2);
    margin-bottom: var(--tcch-space-md);
}

.tcch-error-page__text {
    color: var(--tcch-gray);
    margin-bottom: var(--tcch-space-lg);
}

.tcch-btn {
    display: inline-block;
    padding: var(--tcch-space-md) var(--tcch-space-lg);
    background: var(--tcch-primary);
    color: var(--tcch-white);
    font-weight: 600;
}

.tcch-btn:hover {
    background: var(--tcch-primary-light);
    color: var(--tcch-white);
    text-decoration: none;
}

/* ==========================================================================
   Comments
   ========================================================================== */

.tcch-comments {
    margin-top: var(--tcch-space-xl);
    padding-top: var(--tcch-space-xl);
    border-top: 1px solid var(--tcch-gray-lighter);
}

.tcch-comments__title {
    font-size: var(--tcch-size-h4);
    margin-bottom: var(--tcch-space-lg);
}

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

.tcch-comment {
    padding: var(--tcch-space-lg);
    background: var(--tcch-gray-lighter);
    margin-bottom: var(--tcch-space-md);
}

.tcch-comment .children {
    list-style: none;
    padding-left: var(--tcch-space-lg);
    margin-top: var(--tcch-space-md);
}

.tcch-comment__header {
    display: flex;
    align-items: center;
    gap: var(--tcch-space-md);
    margin-bottom: var(--tcch-space-sm);
}

.tcch-comment__avatar img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.tcch-comment__author {
    font-weight: 600;
}

.tcch-comment__date {
    font-size: var(--tcch-size-sm);
    color: var(--tcch-gray);
}

.tcch-comment__reply a {
    font-size: var(--tcch-size-sm);
    font-weight: 600;
    color: var(--tcch-primary);
}

.tcch-comment-form label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--tcch-space-xs);
}

.tcch-comment-form input,
.tcch-comment-form textarea {
    width: 100%;
    padding: var(--tcch-space-md);
    border: 2px solid var(--tcch-gray-lighter);
    margin-bottom: var(--tcch-space-md);
    font-size: var(--tcch-size-base);
}

.tcch-comment-form input:focus,
.tcch-comment-form textarea:focus {
    outline: none;
    border-color: var(--tcch-primary);
}

.tcch-comment-form textarea {
    min-height: 150px;
}

.tcch-comment-form button {
    padding: var(--tcch-space-md) var(--tcch-space-lg);
    background: var(--tcch-primary);
    color: var(--tcch-white);
    border: none;
    font-weight: 600;
    cursor: pointer;
}

/* ==========================================================================
   Scroll Top
   ========================================================================== */

.tcch-scroll-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--tcch-primary);
    color: var(--tcch-white);
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: 99;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.tcch-scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.tcch-scroll-top:hover {
    background: var(--tcch-primary-light);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1024px) {
    .tcch-grid {
        grid-template-columns: 1fr;
    }

    .tcch-grid--left {
        grid-template-columns: 1fr;
    }

    .tcch-footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tcch-related__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tcch-header__inner {
        height: 56px;
    }

    .tcch-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--tcch-white);
        border-bottom: 1px solid var(--tcch-gray-lighter);
        padding: var(--tcch-space-md);
    }

    .tcch-nav.open {
        display: block;
    }

    .tcch-nav__list {
        flex-direction: column;
    }

    .tcch-menu-btn {
        display: block;
    }

    .tcch-header__search {
        display: none;
    }

    .tcch-article--has-thumb,
    .tcch-article--featured.tcch-article--has-thumb {
        grid-template-columns: 1fr;
    }

    .tcch-article--has-thumb .tcch-article__thumb,
    .tcch-article--featured.tcch-article--has-thumb .tcch-article__thumb {
        order: 0;
    }

    .tcch-post-nav {
        grid-template-columns: 1fr;
    }

    .tcch-related__grid {
        grid-template-columns: 1fr;
    }

    .tcch-footer__grid {
        grid-template-columns: 1fr;
    }

    .tcch-footer__bottom {
        flex-direction: column;
        text-align: center;
    }

    .tcch-aside {
        display: none !important;
    }

    .tcch-footer__nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --tcch-space-xl: 24px;
    }

    .tcch-error-page__code {
        font-size: 80px;
    }
}

/* Interlinking Section */
.tech-interlinking {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
}
.tech-interlinking-title {
    margin: 0 0 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}
.tech-interlinking-list {
    margin: 0;
    padding: 0;
    list-style: none;
}
.tech-interlinking-list li {
    margin-bottom: 0.5rem;
    padding-left: 1rem;
    position: relative;
}
.tech-interlinking-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--tech-color-primary, #333);
}
.tech-interlinking-list a {
    color: var(--tech-color-primary, #333);
    text-decoration: none;
}
.tech-interlinking-list a:hover {
    text-decoration: underline;
}

/* === Grid Layouts === */
.tcch-posts.grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.tcch-posts.grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.tcch-posts.grid-list {
    display: block;
}
.tcch-posts.grid-list .tcch-article {
    margin-bottom: 30px;
}
@media (max-width: 1024px) {
    .tcch-posts.grid-3col {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .tcch-posts.grid-3col,
    .tcch-posts.grid-2col {
        grid-template-columns: 1fr;
    }
}