/*
Theme Name: 4pmtech_main
Theme URI: https://4pmtech.com/
Author: 4pmtech Media
Author URI: https://4pmtech.com/
Description: Fast, lightweight, multi-language technology blog theme for 4pmtech network. Features 20-locale support, live search, and optimized SEO metadata.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 7.4
Text Domain: 4pmtech_main
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
*/

:root {
    --bg-body: #f4f5f7;
    --bg-surface: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #edf2f7;
    --accent-color: #d32f2f;
    --accent-hover: #b71c1c;
    --text-primary: #111827;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --code-bg: #0f172a;
    --code-text: #f8fafc;
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    --font-mono: 'Roboto Mono', SFMono-Regular, Consolas, monospace;
}

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

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a {
    color: #1a73e8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Screen reader text for accessibility */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* --- Full Width Header Stack --- */
.top-promo-banner {
    width: 100%;
    background-color: #c00d0d;
    color: #ffffff;
    font-size: 0.875rem;
    font-weight: 700;
    padding: 10px 0;
}

.top-promo-container {
    max-width: 970px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.promo-btn {
    background: #ffffff;
    color: #c00d0d;
    border: none;
    padding: 4px 14px;
    border-radius: 20px;
    font-weight: 800;
    font-size: 0.75rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

header.site-header {
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
}

.header-container {
    max-width: 970px;
    margin: 0 auto;
    padding: 0 16px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.35rem;
    font-weight: 900;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo a {
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo a:hover {
    text-decoration: none;
}

.logo-badge {
    background: var(--accent-color);
    color: #fff;
    padding: 2px 7px;
    border-radius: 3px;
    font-size: 1rem;
    font-weight: 900;
}

nav.main-nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav.main-nav a {
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    transition: color 0.2s;
}

nav.main-nav a:hover, nav.main-nav .current-menu-item > a {
    color: var(--accent-color);
    text-decoration: none;
}

/* Header Live Search */
.search-box-wrapper {
    position: relative;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 5px 10px;
}

.search-box input {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
    width: 140px;
    font-family: var(--font-family);
}

/* AJAX Search Live Suggestions Dropdown */
.kb-ajax-search__results {
    position: absolute;
    top: 100%;
    right: 0;
    width: 320px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    margin-top: 6px;
    z-index: 2000;
    overflow: hidden;
}

.kb-ajax-search__list {
    list-style: none;
}

.kb-ajax-search__list li {
    border-bottom: 1px solid var(--border-color);
}

.kb-ajax-search__list li:last-child {
    border-bottom: none;
}

.kb-ajax-search__list a {
    display: block;
    padding: 10px 14px;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.35;
}

.kb-ajax-search__list a:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
    text-decoration: none;
}

.kb-ajax-search__empty, .kb-ajax-search__error {
    padding: 12px 14px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Trending Bar */
.trending-bar {
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    padding: 8px 0;
}

.trending-container {
    max-width: 970px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    gap: 16px;
    overflow-x: auto;
    white-space: nowrap;
}

.trending-title {
    font-weight: 800;
    color: var(--accent-color);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.trending-link {
    color: var(--text-secondary);
    font-weight: 600;
}

.trending-link:hover {
    color: var(--text-primary);
}

/* --- Main Content Block (Exactly 970px wide) --- */
.main-container {
    max-width: 970px;
    margin: 24px auto;
    padding: 24px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    box-sizing: border-box;
}

.breadcrumbs {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    font-weight: 500;
}

.category-badge {
    display: inline-block;
    background-color: #fee2e2;
    color: var(--accent-color);
    font-size: 0.75rem;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.filter-title {
    text-transform: uppercase;
}

h1.article-title {
    font-size: 2.25rem;
    line-height: 1.15;
    margin-bottom: 12px;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

p.article-deck {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.4;
    font-weight: 400;
}

.meta-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
    font-size: 0.825rem;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 12px;
}

.author-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.author-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background-color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #fff;
    font-size: 0.875rem;
}

.share-buttons {
    display: flex;
    gap: 8px;
}

.share-btn {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.share-btn:hover {
    background-color: var(--border-color);
}

/* --- Content Grid Layout (Fixed Sidebar Overflow) --- */
.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 28px;
    align-items: start;
}

/* Article Body Typography */
.article-body {
    font-size: 1.0625rem; /* ~17px */
    color: #1e293b;
    line-height: 1.65;
    min-width: 0;
}

.article-body p {
    margin-bottom: 1.25rem;
}

.article-body h2 {
    font-size: 1.45rem;
    font-weight: 800;
    color: #0f172a;
    margin: 2rem 0 0.75rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 3px;
    display: inline-block;
}

.article-body h3 {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 1.5rem 0 0.5rem;
}

/* Callout Box */
.callout-box {
    background-color: var(--bg-secondary);
    border-left: 4px solid var(--accent-color);
    padding: 16px 20px;
    margin: 20px 0;
    border-radius: 0 6px 6px 0;
    font-style: italic;
    color: var(--text-secondary);
}

/* Interactive Prompt Specifier Tool */
.interactive-tool {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    border-radius: 6px;
    padding: 20px;
    margin: 24px 0;
    box-sizing: border-box;
    width: 100%;
}

.interactive-tool h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 800;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    font-family: var(--font-family);
    box-sizing: border-box;
}

.form-control:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(211, 47, 47, 0.15);
}

.form-row {
    display: flex;
    gap: 12px;
}

.form-row .form-group {
    flex: 1;
}

.result-box {
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
    padding: 12px 14px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    word-break: break-all;
    margin-top: 8px;
    color: #4ade80;
    box-sizing: border-box;
    white-space: pre-wrap;
}

.action-btns {
    display: flex;
    gap: 8px;
    margin-top: 14px;
}

.btn {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.85rem;
    font-family: var(--font-family);
}

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

.btn-secondary {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-card);
}

/* Step List */
.step-list {
    list-style: none;
    counter-reset: step-counter;
    margin: 20px 0;
}

.step-item {
    counter-increment: step-counter;
    position: relative;
    padding-left: 44px;
    margin-bottom: 20px;
}

.step-item::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 2px;
    width: 30px;
    height: 30px;
    background-color: var(--accent-color);
    color: #fff;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.88rem;
}

.step-item h4 {
    font-size: 1.05rem;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-weight: 700;
}

/* Code Block */
pre {
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
    padding: 14px 16px;
    border-radius: 6px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    color: var(--code-text);
    margin: 16px 0;
    line-height: 1.5;
}

code {
    font-family: var(--font-mono);
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: #0f172a;
}

/* Comparison Table */
.params-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.9rem;
    box-sizing: border-box;
}

.params-table th, .params-table td {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.params-table th {
    background-color: #f1f5f9;
    color: var(--text-primary);
    font-weight: 700;
}

.params-table tr:nth-child(even) {
    background-color: #f8fafc;
}

/* Tags Section */
.tag-cloud {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-wrap: wrap;
    margin: 24px 0;
}

.tag-title {
    font-weight: 800;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-right: 4px;
}

.tag {
    background-color: #f1f5f9;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 3px 10px;
    border-radius: 14px;
    font-size: 0.78rem;
    font-weight: 600;
}

.tag a {
    color: var(--text-secondary);
}

.tag a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

/* Author Box */
.author-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 6px;
    display: flex;
    gap: 16px;
    align-items: center;
    margin: 32px 0;
}

.author-box-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 900;
    color: #fff;
    flex-shrink: 0;
}

.author-box-content h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 4px;
    font-weight: 800;
}

.author-box-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* Sidebar Containers & Widgets */
.sidebar {
    width: 100%;
    min-width: 0;
    box-sizing: border-box;
}

/* Ad units: no card chrome, no padding, no margin */
.sidebar-ad,
.ad-unit {
    text-align: center;
    background: transparent !important;
    background-color: transparent !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

.ad-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    display: block;
}

.sticky-ad-widget {
    position: sticky;
    top: 80px;
    z-index: 100;
}

.sidebar-widget {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 20px;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.sidebar-widget h3 {
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-primary);
    margin-bottom: 14px;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 4px;
    display: inline-block;
    font-weight: 800;
}

.trending-list {
    list-style: none;
}

.trending-item {
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.trending-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.trending-item a {
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.35;
    display: block;
}

.trending-item a:hover {
    color: var(--accent-color);
}

.trending-meta {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 3px;
}

.newsletter-box p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.newsletter-box input {
    margin-bottom: 8px;
    width: 100%;
    box-sizing: border-box;
}

.newsletter-box button {
    width: 100%;
    box-sizing: border-box;
    text-transform: uppercase;
}

/* Featured Card on Homepage */
.featured-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 5px solid var(--accent-color);
    border-radius: 6px;
    padding: 24px;
    margin-bottom: 32px;
}

.featured-title {
    font-size: 1.85rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 10px;
}

.featured-title a {
    color: var(--text-primary);
}

.featured-title a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

.featured-excerpt {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.post-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

/* Articles Feed List */
.articles-feed {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.article-card {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

.article-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 8px;
}

.card-title a {
    color: var(--text-primary);
}

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

.card-excerpt {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.5;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 8px;
    margin-top: 32px;
    align-items: center;
}

.page-num, .pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    background: #ffffff;
}

.page-num.active, .pagination .page-numbers.current, .page-num:hover, .pagination a.page-numbers:hover {
    background-color: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
    text-decoration: none;
}

/* Full Width Footer */
footer.site-footer {
    width: 100%;
    background-color: #111827;
    color: #9ca3af;
    padding: 36px 0;
    margin-top: 48px;
    font-size: 0.85rem;
}

.footer-container {
    max-width: 970px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.footer-links {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: #d1d5db;
}

.footer-links a:hover {
    color: #ffffff;
}

/* Responsive */
@media (max-width: 900px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    nav.main-nav ul {
        display: none;
    }

    h1.article-title {
        font-size: 1.75rem;
    }

    .main-container {
        border: none;
        border-radius: 0;
        box-shadow: none;
        padding: 16px;
    }
}