/*
Theme Name: การแพทย์แผนจีน - TCM Thailand
Theme URI: https://tcmthailand.com
Author: TCM Thailand
Author URI: https://tcmthailand.com
Description: เว็บไซต์เผยแพร่ความรู้ด้านการแพทย์แผนจีนสำหรับคนไทยและชาวจีนในประเทศไทย - รองรับ 2 ภาษา (ไทย/จีน) ผ่าน Polylang
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: tcm-thailand
Tags: thai, chinese-medicine, bilingual, health, custom-theme
*/

/* =============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================= */
:root {
  --color-forest:    #2C3B2D;
  --color-forest-dk: #1A2A1B;
  --color-forest-xdk:#1E2B1F;
  --color-gold:      #C9973A;
  --color-gold-lt:   rgba(201,151,58,0.12);
  --color-gold-bd:   rgba(201,151,58,0.35);
  --color-cream:     #F7F3EC;
  --color-cream-dk:  #EEE8DD;
  --color-cream-md:  #F0EBE0;
  --color-sage:      #A8C5A0;
  --color-sage-dk:   #6B8A65;
  --color-text:      #2C2A1E;
  --color-text-md:   #4A3A2A;
  --color-text-lt:   #6B5A3E;
  --color-text-muted:#8B7355;
  --color-border:    rgba(139,115,85,0.15);
  --color-white:     #ffffff;

  --font-th:  'Sarabun', sans-serif;
  --font-zh:  'Noto Serif TC', serif;
  --font-disp:'Playfair Display', serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 10px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);

  --header-height: 76px;
  --max-width: 1200px;
  --gutter: 2.5rem;
}

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

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

body {
  font-family: var(--font-th);
  background: var(--color-cream);
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: var(--font-th); }
ul, ol { list-style: none; }
input, textarea, select { font-family: var(--font-th); }

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-disp);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
}

.font-zh { font-family: var(--font-zh); }
.text-gold { color: var(--color-gold); }
.text-sage { color: var(--color-sage); }
.text-muted { color: var(--color-text-muted); }

/* =============================================
   LAYOUT UTILITIES
   ============================================= */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: 2.5rem var(--gutter); }
.section-label {
  font-size: 10px;
  letter-spacing: 3px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}
.section-title {
  font-size: 22px;
  margin-bottom: 1.3rem;
}
.section-title em { color: var(--color-gold); font-style: normal; }

.divider {
  height: 0.5px;
  background: var(--color-border);
  margin: 0 var(--gutter);
}

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; }

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.2s, background 0.2s, color 0.2s;
  border: none;
  white-space: nowrap;
}
.btn-primary { background: var(--color-gold); color: var(--color-text); }
.btn-primary:hover { opacity: 0.88; }
.btn-outline {
  background: none;
  border: 0.5px solid rgba(168,197,160,0.45);
  color: var(--color-sage);
}
.btn-outline:hover { border-color: var(--color-sage); }
.btn-dark { background: var(--color-forest); color: var(--color-sage); }
.btn-dark:hover { background: #3A4F3B; }

/* =============================================
   CARDS (shared)
   ============================================= */
.card {
  background: var(--color-white);
  border: 0.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color 0.2s, transform 0.15s;
}
.card:hover {
  border-color: var(--color-gold-bd);
  transform: translateY(-2px);
}

/* Tags / badges */
.badge {
  display: inline-block;
  font-size: 9.5px;
  letter-spacing: 1px;
  padding: 2px 7px;
  border-radius: 2px;
  text-transform: uppercase;
}
.badge-gold { background: var(--color-gold-lt); color: #8B6820; border: 0.5px solid var(--color-gold-bd); }
.badge-green { background: rgba(168,197,160,0.12); color: #4A7A44; }
.badge-dark { background: var(--color-forest); color: var(--color-sage); }

/* =============================================
   HEADER
   ============================================= */
.site-header {
  background: var(--color-forest);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}
.site-header::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-gold-bd) 20%, var(--color-gold-bd) 80%, transparent);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1rem;
  padding: 0 var(--gutter);
  max-width: var(--max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  text-decoration: none;
}
.logo-icon {
  width: 48px; height: 48px;
  background: rgba(201,151,58,0.1);
  border: 1px solid var(--color-gold-bd);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.logo-icon svg { width: 28px; height: 28px; }
.logo-name-th {
  font-weight: 700;
  color: #F0E8D6;
  font-size: 20px;
  line-height: 1.1;
}
.logo-name-zh {
  font-family: var(--font-zh);
  color: var(--color-gold);
  font-size: 10.5px;
  letter-spacing: 2.5px;
  display: block;
  margin-top: 1px;
}
.logo-line {
  width: 40px; height: 1.5px;
  margin-top: 3px;
  background: linear-gradient(to right, rgba(201,151,58,0.6), transparent);
}

/* Main nav */
.main-nav {
  display: flex;
  align-items: center;
  flex: 1;
  padding-left: 1.5rem;
  gap: 0;
}
.main-nav a {
  color: var(--color-sage);
  font-size: 12.5px;
  padding: 4px 10px;
  position: relative;
  transition: color 0.2s;
  white-space: nowrap;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 50%; right: 50%;
  height: 1.5px;
  background: var(--color-gold);
  transition: left 0.18s, right 0.18s;
}
.main-nav a:hover,
.main-nav a.current-menu-item { color: #F0E8D6; }
.main-nav a:hover::after,
.main-nav a.current-menu-item::after { left: 10px; right: 10px; }

/* Header tools */
.header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.header-search {
  background: rgba(255,255,255,0.07);
  border: 0.5px solid rgba(255,255,255,0.12);
  border-radius: 16px;
  padding: 5px 12px 5px 9px;
  display: flex; align-items: center; gap: 5px;
}
.header-search input {
  background: none; border: none; outline: none;
  color: var(--color-sage);
  font-size: 11.5px; width: 95px;
}
.header-search input::placeholder { color: rgba(168,197,160,0.4); }
.header-search i { color: var(--color-sage); font-size: 13px; }
.lang-switcher {
  background: none;
  border: 0.5px solid var(--color-gold);
  border-radius: 3px;
  color: var(--color-gold);
  font-size: 11px;
  padding: 4px 9px;
  font-family: var(--font-zh);
  letter-spacing: 1px;
  transition: background 0.2s;
}
.lang-switcher:hover { background: var(--color-gold-lt); }

/* Mobile hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--color-sage);
  border-radius: 1px;
  transition: all 0.25s;
}

/* Mobile menu */
.mobile-menu {
  display: none;
  background: var(--color-forest);
  padding: 1rem var(--gutter) 1.5rem;
  border-top: 0.5px solid rgba(168,197,160,0.1);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  color: var(--color-sage);
  font-size: 14px;
  padding: 10px 0;
  border-bottom: 0.5px solid rgba(168,197,160,0.08);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--color-gold); }

/* =============================================
   PAGE HERO (inner pages)
   ============================================= */
.page-hero {
  background: var(--color-forest);
  padding: 2rem var(--gutter);
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(201,151,58,0.06), transparent 65%);
}
.page-hero::after {
  content: '';
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(201,151,58,0.25) 30%, rgba(201,151,58,0.25) 70%, transparent);
}
.page-hero-inner { position: relative; z-index: 1; }
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  margin-bottom: 0.7rem;
}
.breadcrumb a { color: var(--color-sage-dk); font-size: 11.5px; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--color-sage); }
.breadcrumb span { color: #4A5E4B; font-size: 11px; }
.page-hero-title {
  font-family: var(--font-disp);
  color: #F0E8D6;
  font-size: 26px;
  font-weight: 600;
  margin-bottom: 6px;
}
.page-hero-title em { color: var(--color-gold); font-style: normal; }
.page-hero-sub {
  color: var(--color-sage);
  font-size: 13px;
  font-weight: 300;
  line-height: 1.7;
}

/* =============================================
   HERO SLIDESHOW (homepage)
   ============================================= */
.hero-slideshow {
  position: relative;
  height: 420px;
  overflow: hidden;
  background: var(--color-forest-xdk);
}
.hero-slide {
  position: absolute; inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.hero-slide.active { opacity: 1; }
.slide-text {
  padding: 3rem 3rem 3rem 2.8rem;
  display: flex; flex-direction: column; justify-content: center;
  background: var(--color-forest);
  position: relative;
}
.slide-text::after {
  content: '';
  position: absolute; right: 0; top: 15%; bottom: 15%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(201,151,58,0.25), transparent);
}
.slide-tag {
  display: inline-block;
  background: var(--color-gold-lt);
  border: 0.5px solid rgba(201,151,58,0.3);
  color: var(--color-gold);
  font-size: 10px; letter-spacing: 2px;
  padding: 3px 10px; border-radius: 2px;
  margin-bottom: 1rem; width: fit-content;
}
.slide-title {
  font-family: var(--font-th);
  font-weight: 700;
  color: #F0E8D6;
  font-size: 26px;
  line-height: 1.38;
  margin-bottom: 0.75rem;
}
.slide-title em { color: var(--color-gold); font-style: normal; }
.slide-sub {
  color: var(--color-sage);
  font-size: 13px; line-height: 1.75;
  margin-bottom: 1.6rem; font-weight: 300;
}
.slide-btns { display: flex; gap: 9px; }
.slide-image {
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
}
.slide-image img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
}
.slide-image .placeholder-content {
  display: flex; flex-direction: column;
  align-items: center; gap: 10px;
}
.slide-image .placeholder-content i {
  font-size: 52px; opacity: 0.28;
}
.slide-image .placeholder-label {
  font-size: 9.5px; letter-spacing: 2px;
  opacity: 0.22; text-transform: uppercase;
}
.corner-zh {
  position: absolute; top: 14px; left: 14px;
  color: rgba(201,151,58,0.18);
  font-size: 10px; letter-spacing: 3px;
  writing-mode: vertical-rl;
  font-family: var(--font-zh);
}
/* Slide controls */
.slide-dots {
  position: absolute; bottom: 16px; left: 2.8rem;
  display: flex; gap: 7px; z-index: 5;
}
.slide-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: none; padding: 0;
  transition: background 0.3s, transform 0.3s;
}
.slide-dot.active { background: var(--color-gold); transform: scale(1.3); }
.slide-progress {
  position: absolute; bottom: 0; left: 0;
  height: 2px; background: var(--color-gold);
  width: 0%; z-index: 5;
}
.slide-counter {
  position: absolute; bottom: 18px; right: 2.8rem;
  color: rgba(240,232,214,0.3);
  font-size: 11px; letter-spacing: 2px; z-index: 5;
}

/* =============================================
   FEATURE CARDS (homepage)
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 10px;
  margin-bottom: 1.6rem;
}
.feature-card {
  background: var(--color-white);
  border: 0.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  cursor: pointer;
  transition: border-color 0.2s, transform 0.15s;
}
.feature-card:hover {
  border-color: var(--color-gold-bd);
  transform: translateY(-1px);
}
.feature-icon {
  width: 34px; height: 34px;
  background: var(--color-cream-dk);
  border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted);
  font-size: 17px; margin-bottom: 9px;
}
.feature-icon.gold { background: var(--color-gold-lt); color: #8B6820; }
.feature-title { font-size: 12.5px; font-weight: 600; color: var(--color-text); margin-bottom: 3px; }
.feature-sub { font-size: 11.5px; color: var(--color-text-muted); line-height: 1.5; }
.feature-tag {
  display: inline-block;
  background: var(--color-cream-dk);
  color: #6B5A3E;
  font-size: 10px; padding: 2px 6px;
  border-radius: 2px; margin-top: 7px;
}
.feature-tag.gold { background: var(--color-gold-lt); color: #8B6820; }

/* =============================================
   ADVISOR BANNER
   ============================================= */
.advisor-banner {
  background: var(--color-forest);
  border-radius: var(--radius-md);
  padding: 1.3rem 1.6rem;
  display: flex; align-items: center;
  justify-content: space-between; gap: 1rem;
  margin-bottom: 1.8rem;
}
.advisor-icon {
  width: 42px; height: 42px;
  background: var(--color-gold-lt);
  border: 0.5px solid rgba(201,151,58,0.28);
  border-radius: 7px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-gold); font-size: 20px; flex-shrink: 0;
}
.advisor-title { color: #F0E8D6; font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.advisor-sub { color: var(--color-sage); font-size: 11.5px; font-weight: 300; }
.advisor-note { font-size: 10px; color: var(--color-sage-dk); margin-top: 3px; }

/* =============================================
   ARTICLE CARDS
   ============================================= */
.article-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.article-card {
  background: var(--color-white);
  border: 0.5px solid rgba(139,115,85,0.12);
  border-radius: 7px; overflow: hidden; cursor: pointer;
  transition: border-color 0.2s;
}
.article-card:hover { border-color: rgba(139,115,85,0.3); }
.article-thumb {
  height: 74px;
  display: flex; align-items: center; justify-content: center;
  color: #B4A48C; font-size: 26px; position: relative;
  background: var(--color-cream-dk);
}
.article-thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-cat-badge {
  position: absolute; top: 7px; left: 7px;
  background: var(--color-forest); color: var(--color-sage);
  font-size: 9.5px; padding: 2px 6px; border-radius: 2px;
}
.article-body { padding: 9px 12px 12px; }
.article-title { font-size: 12px; font-weight: 500; color: var(--color-text); line-height: 1.4; margin-bottom: 4px; }
.article-date { font-size: 10.5px; color: #B4A48C; }

/* =============================================
   SUBSCRIBE STRIP
   ============================================= */
.subscribe-strip {
  background: var(--color-forest);
  padding: 1.6rem var(--gutter);
  display: flex; align-items: center;
  justify-content: space-between; gap: 2rem;
}
.subscribe-title {
  font-family: var(--font-disp);
  color: #F0E8D6; font-size: 17px; font-weight: 600; margin-bottom: 3px;
}
.subscribe-sub { color: var(--color-sage-dk); font-size: 12px; }
.subscribe-form { display: flex; gap: 7px; flex-shrink: 0; }
.subscribe-input {
  background: rgba(255,255,255,0.07);
  border: 0.5px solid rgba(255,255,255,0.12);
  border-radius: 3px; padding: 9px 14px;
  color: #F0E8D6; font-size: 12.5px; outline: none; width: 220px;
}
.subscribe-input::placeholder { color: rgba(240,232,214,0.32); }

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: var(--color-forest-dk);
  padding: 2rem var(--gutter) 1.2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 0.8fr 1.1fr;
  gap: 2rem; margin-bottom: 1.5rem;
}
.footer-logo-th { font-weight: 700; color: #F0E8D6; font-size: 15px; margin-bottom: 2px; }
.footer-logo-zh { font-family: var(--font-zh); color: var(--color-gold); font-size: 10px; letter-spacing: 2px; }
.footer-desc { color: var(--color-sage-dk); font-size: 11.5px; line-height: 1.6; margin-top: 8px; margin-bottom: 12px; }
.footer-social { display: flex; gap: 7px; }
.social-btn {
  width: 28px; height: 28px;
  border: 0.5px solid rgba(168,197,160,0.18);
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  color: var(--color-sage-dk); font-size: 13px;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}
.social-btn:hover { border-color: var(--color-gold); color: var(--color-gold); }
.social-btn.whatsapp:hover { border-color: #25D366; color: #25D366; }
.footer-heading {
  font-size: 10.5px; letter-spacing: 2px;
  color: var(--color-gold); margin-bottom: 10px; text-transform: uppercase;
  font-family: var(--font-th); font-weight: 600;
}
.footer-links li { margin-bottom: 7px; }
.footer-links a { color: var(--color-sage-dk); font-size: 12px; transition: color 0.2s; }
.footer-links a:hover { color: var(--color-sage); }
.footer-contact li {
  display: flex; align-items: flex-start; gap: 7px;
  margin-bottom: 8px; color: var(--color-sage-dk); font-size: 12px; line-height: 1.4;
}
.footer-contact i { color: var(--color-text-muted); font-size: 13px; flex-shrink: 0; margin-top: 1px; }
.footer-bottom {
  border-top: 0.5px solid rgba(168,197,160,0.1);
  padding-top: 1rem;
  display: flex; align-items: center; justify-content: space-between;
}
.footer-copy { color: #4A5E4B; font-size: 11px; }
.footer-legal { display: flex; gap: 1.2rem; }
.footer-legal a { color: #4A5E4B; font-size: 11px; transition: color 0.2s; }
.footer-legal a:hover { color: var(--color-sage-dk); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  :root { --gutter: 1.5rem; }
  .main-nav { padding-left: 1rem; }
  .main-nav a { padding: 4px 7px; font-size: 12px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.5rem; }
}

@media (max-width: 768px) {
  .main-nav { display: none; }
  .header-search { display: none; }
  .menu-toggle { display: flex; }

  .hero-slideshow { height: auto; }
  .hero-slide { grid-template-columns: 1fr; }
  .slide-image { height: 200px; }
  .slide-text { padding: 1.8rem 1.5rem; }
  .slide-title { font-size: 20px; }

  .feature-grid { grid-template-columns: 1fr 1fr; }
  .article-grid { grid-template-columns: 1fr 1fr; }

  .subscribe-strip { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .subscribe-form { width: 100%; }
  .subscribe-input { flex: 1; width: auto; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}

@media (max-width: 480px) {
  :root { --gutter: 1rem; --header-height: 60px; }
  .logo-name-th { font-size: 16px; }
  .logo-icon { width: 38px; height: 38px; }
  .feature-grid { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}