/*
Theme Name: Commexpress Knowledge Portal
Theme URI: https://commexpress.com
Author: Commexpress
Author URI: https://commexpress.com
Description: Knowledge Portal theme for Commexpress, fully compatible with Elementor Page Builder. Features include search, category navigation, FAQ sections, and announcement blocks.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: commexpress-knowledge
Tags: knowledge-base, elementor, business, custom-menu, featured-images, threaded-comments, translation-ready
*/

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

:root {
  --color-primary:   #4F46E5;
  --color-primary-dark: #3730A3;
  --color-accent:    #06B6D4;
  --color-bg:        #F8FAFC;
  --color-surface:   #FFFFFF;
  --color-border:    #E2E8F0;
  --color-text:      #1E293B;
  --color-muted:     #64748B;
  --color-danger:    #EF4444;
  --radius-sm:       6px;
  --radius-md:       10px;
  --radius-lg:       16px;
  --shadow-sm:       0 1px 3px rgba(0,0,0,.08);
  --shadow-md:       0 4px 12px rgba(0,0,0,.10);
  --font-sans:       'Inter', 'Noto Sans Thai', system-ui, sans-serif;
  --font-size-base:  16px;
  --transition:      .2s ease;
}

html { font-size: var(--font-size-base); scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; height: auto; display: block; }

/* ============================================================
   LAYOUT
   ============================================================ */
.site-wrapper { display: flex; flex-direction: column; min-height: 100vh; }
.site-main    { flex: 1; }
.container    { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 24px;
}
.site-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.2rem; font-weight: 700; color: var(--color-primary);
  white-space: nowrap;
}
.site-logo img { height: 36px; width: auto; }

/* Search bar in header */
.header-search {
  flex: 1; max-width: 480px;
  position: relative;
}
.header-search input[type="search"] {
  width: 100%; height: 40px;
  border: 1.5px solid var(--color-border);
  border-radius: 99px;
  padding: 0 16px 0 42px;
  font-size: .9rem; background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.header-search input[type="search"]:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}
.header-search .search-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  color: var(--color-muted); pointer-events: none;
}

/* Nav */
.header-nav ul { list-style: none; display: flex; gap: 4px; }
.header-nav a {
  display: block; padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: .875rem; font-weight: 500; color: var(--color-muted);
  transition: background var(--transition), color var(--transition);
}
.header-nav a:hover, .header-nav .current-menu-item a {
  background: rgba(79,70,229,.08); color: var(--color-primary);
}

/* ============================================================
   HERO / SEARCH SECTION  (Homepage)
   ============================================================ */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #7C3AED 100%);
  padding: 72px 24px;
  text-align: center; color: #fff;
}
.hero-section h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 12px; }
.hero-section p  { font-size: 1.1rem; opacity: .85; margin-bottom: 32px; }
.hero-search {
  display: flex; max-width: 560px; margin: 0 auto;
  background: #fff; border-radius: 99px;
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
  overflow: hidden;
}
.hero-search input[type="search"] {
  flex: 1; border: none; outline: none;
  padding: 14px 20px; font-size: 1rem; color: var(--color-text);
}
.hero-search button {
  background: var(--color-primary); color: #fff;
  border: none; cursor: pointer;
  padding: 0 28px; font-size: .95rem; font-weight: 600;
  border-radius: 0 99px 99px 0;
  transition: background var(--transition);
}
.hero-search button:hover { background: var(--color-primary-dark); }

/* ============================================================
   CATEGORY CARDS
   ============================================================ */
.categories-section { padding: 56px 0; }
.section-title {
  font-size: 1.5rem; font-weight: 700; margin-bottom: 32px;
  position: relative; padding-bottom: 12px;
}
.section-title::after {
  content: ''; position: absolute; bottom: 0; left: 0;
  width: 48px; height: 3px; border-radius: 99px;
  background: var(--color-primary);
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.category-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
}
.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.category-card .cat-icon {
  font-size: 2rem; margin-bottom: 12px;
  display: block;
}
.category-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.category-card p  { font-size: .8rem; color: var(--color-muted); }

/* ============================================================
   ARTICLE CARDS
   ============================================================ */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.article-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: box-shadow var(--transition), transform var(--transition);
}
.article-card:hover {
  box-shadow: var(--shadow-md); transform: translateY(-2px);
}
.article-card .badge {
  display: inline-block;
  font-size: .72rem; font-weight: 600; letter-spacing: .04em;
  padding: 3px 10px; border-radius: 99px;
  background: rgba(79,70,229,.1); color: var(--color-primary);
  margin-bottom: 12px; text-transform: uppercase;
}
.article-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; line-height: 1.4; }
.article-card p  { font-size: .875rem; color: var(--color-muted); line-height: 1.6; }
.article-card .meta {
  margin-top: 16px; padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: flex; justify-content: space-between; align-items: center;
  font-size: .78rem; color: var(--color-muted);
}

/* ============================================================
   ANNOUNCEMENT BANNER
   ============================================================ */
.announcement-bar {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-md);
  padding: 14px 20px;
  display: flex; align-items: flex-start; gap: 12px;
  margin-bottom: 24px;
}
.announcement-bar .ann-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.announcement-bar .ann-title { font-weight: 600; font-size: .9rem; }
.announcement-bar .ann-text  { font-size: .85rem; color: var(--color-muted); }

/* ============================================================
   SIDEBAR
   ============================================================ */
.content-with-sidebar { display: flex; gap: 40px; align-items: flex-start; padding: 48px 0; }
.main-content  { flex: 1; min-width: 0; }
.sidebar       { width: 280px; flex-shrink: 0; }
.sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
}
.sidebar-widget h4 { font-size: .9rem; font-weight: 700; margin-bottom: 16px; color: var(--color-muted); text-transform: uppercase; letter-spacing: .06em; }
.sidebar-widget ul { list-style: none; }
.sidebar-widget li { padding: 8px 0; border-bottom: 1px solid var(--color-border); font-size: .875rem; }
.sidebar-widget li:last-child { border-bottom: none; }
.sidebar-widget a { color: var(--color-text); }
.sidebar-widget a:hover { color: var(--color-primary); }

/* ============================================================
   SINGLE ARTICLE
   ============================================================ */
.article-header { margin-bottom: 32px; }
.article-header .breadcrumbs { font-size: .8rem; color: var(--color-muted); margin-bottom: 12px; }
.article-header .breadcrumbs a { color: var(--color-muted); }
.article-header .breadcrumbs a:hover { color: var(--color-primary); }
.article-title  { font-size: 1.9rem; font-weight: 800; line-height: 1.3; margin-bottom: 12px; }
.article-meta   { font-size: .85rem; color: var(--color-muted); display: flex; gap: 16px; flex-wrap: wrap; }

.article-content { line-height: 1.8; }
.article-content h2 { font-size: 1.3rem; font-weight: 700; margin: 32px 0 12px; }
.article-content h3 { font-size: 1.1rem; font-weight: 600; margin: 24px 0 10px; }
.article-content p  { margin-bottom: 16px; }
.article-content ul, .article-content ol { margin: 0 0 16px 24px; }
.article-content li { margin-bottom: 6px; }
.article-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding: 12px 20px; margin: 24px 0;
  background: rgba(79,70,229,.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-muted); font-style: italic;
}
.article-content code {
  background: #F1F5F9; padding: 2px 6px; border-radius: 4px;
  font-family: 'Courier New', monospace; font-size: .85em;
}
.article-content pre {
  background: #1E293B; color: #E2E8F0;
  padding: 20px; border-radius: var(--radius-md);
  overflow-x: auto; margin: 20px 0;
}
.article-content pre code { background: none; padding: 0; color: inherit; }

/* Feedback widget */
.article-feedback {
  margin-top: 48px; padding-top: 32px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.article-feedback p { font-weight: 600; margin-bottom: 16px; }
.feedback-btn {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1.5px solid var(--color-border); background: var(--color-surface);
  border-radius: 99px; padding: 8px 20px; cursor: pointer; font-size: .875rem;
  transition: all var(--transition); margin: 0 6px;
}
.feedback-btn:hover  { border-color: var(--color-primary); color: var(--color-primary); background: rgba(79,70,229,.05); }
.feedback-btn.yes    { }
.feedback-btn.no     { }

/* ============================================================
   FAQ SECTION
   ============================================================ */
.faq-list { border: 1px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item:last-child { border-bottom: none; }
.faq-question {
  width: 100%; text-align: left; background: none; border: none;
  padding: 18px 20px; font-size: .95rem; font-weight: 600;
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; color: var(--color-text);
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(79,70,229,.04); }
.faq-question .chevron { transition: transform var(--transition); color: var(--color-muted); }
.faq-item.open .chevron { transform: rotate(180deg); }
.faq-answer {
  display: none; padding: 0 20px 18px;
  font-size: .9rem; color: var(--color-muted); line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* ============================================================
   SEARCH RESULTS
   ============================================================ */
.search-results-header {
  padding: 32px 0 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}
.search-results-header h1 { font-size: 1.4rem; font-weight: 700; }
.search-results-header p  { color: var(--color-muted); font-size: .9rem; margin-top: 4px; }
.no-results {
  text-align: center; padding: 64px 24px;
  color: var(--color-muted);
}
.no-results .icon { font-size: 3rem; margin-bottom: 16px; }
.no-results h2 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; color: var(--color-text); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 40px 0 24px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 32px;
}
.footer-brand .brand-name { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.footer-brand p { font-size: .875rem; color: var(--color-muted); line-height: 1.6; }
.footer-col h5 { font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--color-muted); margin-bottom: 14px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: .875rem; color: var(--color-muted); }
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
  padding-top: 24px; border-top: 1px solid var(--color-border);
  display: flex; justify-content: space-between; align-items: center;
  font-size: .8rem; color: var(--color-muted);
}

/* ============================================================
   UTILITIES
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 22px; border-radius: 99px;
  font-size: .875rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition); border: 1.5px solid transparent;
}
.btn-primary  { background: var(--color-primary); color: #fff; }
.btn-primary:hover  { background: var(--color-primary-dark); color: #fff; }
.btn-outline  { border-color: var(--color-primary); color: var(--color-primary); background: transparent; }
.btn-outline:hover  { background: var(--color-primary); color: #fff; }

.tag {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: .75rem; font-weight: 500;
  background: var(--color-bg); border: 1px solid var(--color-border);
  color: var(--color-muted);
}

/* ============================================================
   ELEMENTOR OVERRIDES
   ============================================================ */
.elementor-section .container { max-width: 100%; padding: 0; }
.elementor-widget-text-editor p:last-child { margin-bottom: 0; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .hero-section h1 { font-size: 1.7rem; }
  .content-with-sidebar { flex-direction: column; }
  .sidebar { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .header-nav { display: none; }
  .header-search { max-width: none; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .category-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
}