/* ==========================================================================
   Sorsanook Pro - Modern Professional Theme for WordPress & Web
   Style Guideline: sorsanook.com (Blocksy & Elementor Aligned)
   Font: Prompt (Google Fonts)
   Author: Sorayut Oungkananukit (อ.สรยุทธ อังคณานุกิจ)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Prompt:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.1/css/all.min.css');

:root {
  /* Brand Colors from sorsanook.com */
  --color-primary: #FFE600;
  --color-primary-hover: #E5CF00;
  --color-primary-light: #FFF8B8;
  --color-primary-rgb: 255, 230, 0;

  /* Theme Backgrounds */
  --bg-dark: #0A0F1D;
  --bg-dark-card: #111A2E;
  --bg-dark-elevated: #16223B;
  --bg-dark-border: rgba(255, 255, 255, 0.08);

  --bg-light: #F8FAFC;
  --bg-light-card: #FFFFFF;
  --bg-light-border: #E2E8F0;

  /* Accent Colors */
  --color-blue: #2872FA;
  --color-blue-dark: #1559ED;
  --color-blue-glow: rgba(40, 114, 250, 0.25);
  
  --color-canva-purple: #7D2AE8;
  --color-canva-teal: #00C4CC;
  --color-line: #06C755;
  --color-line-hover: #05B34C;

  /* Typography Colors */
  --text-white: #FFFFFF;
  --text-light: #F1F5F9;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --text-dark: #0F172A;
  --text-dark-muted: #475569;

  /* Layout & Spacing */
  --container-max: 1240px;
  --header-height: 80px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  --shadow-glow-yellow: 0 0 25px rgba(255, 230, 0, 0.35);
  --shadow-glow-blue: 0 0 30px rgba(40, 114, 250, 0.3);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Base Styles & Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: 'Prompt', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   Header & Navigation (Blocksy / Sorsanook Style)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 15, 29, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--bg-dark-border);
  height: var(--header-height);
  transition: var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(10, 15, 29, 0.98);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo-img,
.custom-logo,
.custom-logo-link img {
  height: 52px;
  max-height: 52px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  transition: transform var(--transition-bounce);
  display: block;
}

.brand-wrapper:hover .brand-logo-img,
.brand-wrapper:hover .custom-logo {
  transform: scale(1.06) rotate(-3deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  justify-content: center;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.2;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-tagline {
  font-size: 0.82rem;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.2;
  margin-top: 2px;
  white-space: nowrap;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
}

.nav-menu ul,
.nav-menu .nav-menu-list,
.nav-menu-list {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li,
.nav-menu-list li {
  list-style: none;
  margin: 0;
  padding: 0;
  display: inline-flex;
  align-items: center;
}

.nav-link,
.nav-menu a,
.nav-menu-list a {
  font-size: 0.98rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-smooth);
}

.nav-link:hover, 
.nav-link.active,
.nav-menu a:hover,
.nav-menu-list a:hover,
.nav-menu li.current-menu-item > a,
.nav-menu li.current_page_item > a {
  color: var(--text-white);
}

.nav-link.active::after, 
.nav-link:hover::after,
.nav-menu a:hover::after,
.nav-menu-list a:hover::after,
.nav-menu li.current-menu-item > a::after,
.nav-menu li.current_page_item > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Toggle */
.mobile-toggle-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ==========================================================================
   Buttons (Matching Sorsanook CSS)
   ========================================================================== */
.btn {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-yellow {
  background-color: var(--color-primary);
  color: #000000;
  border-color: var(--color-primary);
}

.btn-yellow:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 230, 0, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #000000;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255, 230, 0, 0.25);
}

.btn-line {
  background-color: var(--color-line);
  color: #FFFFFF;
  border-color: var(--color-line);
}

.btn-line:hover {
  background-color: var(--color-line-hover);
  border-color: var(--color-line-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(6, 199, 85, 0.4);
}

.btn-blue {
  background-color: var(--color-blue);
  color: #FFFFFF;
  border-color: var(--color-blue);
}

.btn-blue:hover {
  background-color: var(--color-blue-dark);
  border-color: var(--color-blue-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(40, 114, 250, 0.35);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.12rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 70px 0 90px;
  background: radial-gradient(circle at 85% 20%, rgba(40, 114, 250, 0.16) 0%, transparent 45%),
              radial-gradient(circle at 15% 75%, rgba(255, 230, 0, 0.08) 0%, transparent 45%),
              var(--bg-dark);
  border-bottom: 1px solid var(--bg-dark-border);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
}

.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 230, 0, 0.1);
  border: 1px solid rgba(255, 230, 0, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 22px;
}

.hero-badge-pill i {
  color: var(--color-primary);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.18;
  color: var(--text-white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.hero-title .highlight-yellow {
  color: var(--color-primary);
  position: relative;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.85rem;
  font-weight: 600;
  color: #E2E8F0;
  line-height: 1.35;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 32px;
  max-width: 620px;
}

.hero-action-group {
  margin-bottom: 36px;
}

.hero-action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 16px;
}

.hero-stats-row {
  display: flex;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--bg-dark-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.84rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Hero Visual & Badges */
.hero-visual-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-frame {
  position: relative;
  width: 100%;
  max-width: 440px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  border: 2px solid rgba(255, 255, 255, 0.1);
  background: var(--bg-dark-card);
}

.hero-speaker-img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  object-position: top center;
  transition: transform var(--transition-normal);
}

.hero-image-frame:hover .hero-speaker-img {
  transform: scale(1.02);
}

/* Floating Badges */
.floating-cert-badge {
  position: absolute;
  background: rgba(17, 26, 46, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 5;
  animation: floatSlow 4s ease-in-out infinite;
}

.badge-canva {
  top: 24px;
  left: -28px;
  border-left: 4px solid var(--color-canva-purple);
}

.badge-gemini {
  bottom: 30px;
  right: -20px;
  border-left: 4px solid var(--color-blue);
  animation-delay: -2s;
}

.floating-cert-badge img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 50%;
}

.floating-cert-badge .badge-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.2;
}

.floating-cert-badge .badge-sub {
  font-size: 0.74rem;
  color: var(--color-primary);
  font-weight: 500;
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ==========================================================================
   Trust & Social Proof Bar
   ========================================================================== */
.trust-bar-section {
  background: #0E1628;
  padding: 34px 0;
  border-bottom: 1px solid var(--bg-dark-border);
}

.trust-bar-title {
  text-align: center;
  font-size: 0.92rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 22px;
}

.trust-badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 18px;
  align-items: center;
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.trust-badge-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.trust-badge-icon {
  font-size: 1.4rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.trust-badge-text strong {
  display: block;
  font-size: 0.88rem;
  color: var(--text-white);
  line-height: 1.25;
}

.trust-badge-text span {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Section Common Components
   ========================================================================== */
.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  background: rgba(255, 230, 0, 0.08);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
}

.section-title {
  font-size: 2.35rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Pillars / Why Us (Edutainment Experience)
   ========================================================================== */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.pillar-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  padding: 32px 24px;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  transition: var(--transition-fast);
}

.pillar-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 230, 0, 0.4);
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.3);
}

.pillar-card:hover::before {
  background: var(--color-primary);
}

.pillar-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-sm);
  background: rgba(255, 230, 0, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.pillar-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.pillar-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ==========================================================================
   Courses / Training Directory
   ========================================================================== */
.filter-tabs-wrapper {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-tab {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  color: var(--text-muted);
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.94rem;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.filter-tab:hover {
  color: var(--text-white);
  border-color: rgba(255, 255, 255, 0.2);
}

.filter-tab.active {
  background: var(--color-primary);
  color: #000000;
  border-color: var(--color-primary);
  box-shadow: 0 4px 15px rgba(255, 230, 0, 0.3);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.course-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 230, 0, 0.4);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.35);
}

.course-card-header {
  padding: 24px;
  border-bottom: 1px solid var(--bg-dark-border);
  position: relative;
}

.course-category-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.tag-ai {
  background: rgba(40, 114, 250, 0.15);
  color: #60A5FA;
  border: 1px solid rgba(40, 114, 250, 0.3);
}

.tag-canva {
  background: rgba(125, 42, 232, 0.15);
  color: #C084FC;
  border: 1px solid rgba(125, 42, 232, 0.3);
}

.tag-mkt {
  background: rgba(6, 199, 85, 0.15);
  color: #4ADE80;
  border: 1px solid rgba(6, 199, 85, 0.3);
}

.tag-biz {
  background: rgba(255, 230, 0, 0.15);
  color: var(--color-primary);
  border: 1px solid rgba(255, 230, 0, 0.3);
}

.course-title {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.35;
  margin-bottom: 8px;
}

.course-subtitle {
  font-size: 0.88rem;
  color: var(--color-primary);
  font-weight: 500;
}

.course-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.course-highlights-list {
  margin-bottom: 24px;
}

.course-highlights-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.course-highlights-list li i {
  color: var(--color-primary);
  margin-top: 4px;
  font-size: 0.8rem;
}

.course-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--bg-dark-border);
  margin-top: auto;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.course-meta-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.course-card-footer {
  padding: 16px 24px 24px;
}

/* ==========================================================================
   Speaker Profile / Credentials Showcase
   ========================================================================== */
.about-speaker-section {
  background: #0E1628;
  border-top: 1px solid var(--bg-dark-border);
  border-bottom: 1px solid var(--bg-dark-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
  align-items: center;
}

.about-photo-card {
  position: relative;
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-lg);
}

.about-photo-card img {
  border-radius: var(--radius-md);
  width: 100%;
  height: 480px;
  object-fit: cover;
  object-position: top center;
}

.about-badge-card {
  margin-top: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.about-badge-card img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.about-content-col h3 {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.25;
  margin-bottom: 8px;
}

.about-role-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.about-bio-text {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 26px;
}

.credentials-accordion {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 30px;
}

.credential-box {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--color-primary);
}

.credential-box strong {
  display: block;
  font-size: 0.98rem;
  color: var(--text-white);
  margin-bottom: 4px;
}

.credential-box p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
}

/* ==========================================================================
   Gallery Section (Real Workshop Atmosphere)
   ========================================================================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 250px;
  cursor: pointer;
  border: 1px solid var(--bg-dark-border);
}

.gallery-item.span-2 {
  grid-column: span 2;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 15, 29, 0.9) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 18px;
  opacity: 0;
  transition: var(--transition-fast);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-caption {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-white);
}

/* ==========================================================================
   Prompt Hub / Free Resources (แจก Prompt & สาระน่ารู้)
   ========================================================================== */
.prompt-hub-section {
  background: radial-gradient(circle at 50% 10%, rgba(40, 114, 250, 0.08) 0%, transparent 50%),
              var(--bg-dark);
}

.prompt-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.prompt-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.prompt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.prompt-tag {
  font-size: 0.74rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(40, 114, 250, 0.15);
  color: #60A5FA;
}

.prompt-title {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.prompt-box {
  background: #090E1A;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.85rem;
  color: #E2E8F0;
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
  position: relative;
  white-space: pre-wrap;
  word-break: break-word;
}

.btn-copy-prompt {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-light);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-copy-prompt:hover {
  background: var(--color-primary);
  color: #000000;
  border-color: var(--color-primary);
}

.btn-copy-prompt.copied {
  background: var(--color-line);
  color: #FFFFFF;
  border-color: var(--color-line);
}

/* ==========================================================================
   Booking & In-house Training Form
   ========================================================================== */
.booking-section {
  background: #0D1424;
  border-top: 1px solid var(--bg-dark-border);
}

.booking-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 50px;
}

.booking-info-col h3 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
  line-height: 1.25;
}

.booking-info-col p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 30px;
}

.direct-contacts-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 30px;
}

.direct-contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.direct-contact-item:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.icon-line { background: rgba(6, 199, 85, 0.15); color: var(--color-line); }
.icon-phone { background: rgba(40, 114, 250, 0.15); color: var(--color-blue); }
.icon-email { background: rgba(255, 230, 0, 0.15); color: var(--color-primary); }

.contact-details strong {
  display: block;
  font-size: 0.96rem;
  color: var(--text-white);
}

.contact-details span {
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* Booking Form Card */
.booking-form-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-light);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background: #090E1A;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-white);
  font-size: 0.95rem;
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 230, 0, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 110px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #060A14;
  border-top: 1px solid var(--bg-dark-border);
  padding: 60px 0 30px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 45px;
}

.footer-brand h4 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 6px;
}

.footer-brand .tagline {
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.footer-social-links {
  display: flex;
  gap: 12px;
}

.footer-social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 1.1rem;
  transition: var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-primary);
  color: #000000;
  border-color: var(--color-primary);
  transform: translateY(-3px);
}

.footer-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 18px;
}

.footer-links-list li {
  margin-bottom: 10px;
}

.footer-links-list a {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-bottom a {
  color: var(--color-primary);
}

/* Floating Quick Action Button on Mobile */
.floating-quick-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 15, 29, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--bg-dark-border);
  padding: 10px 16px;
  z-index: 999;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-action-buttons {
    justify-content: center;
  }

  .hero-stats-row {
    justify-content: center;
  }

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

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

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

  .about-grid {
    grid-template-columns: 1fr;
  }

  .booking-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: #0A0F1D;
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--bg-dark-border);
    gap: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu ul,
  .nav-menu .nav-menu-list,
  .nav-menu-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 16px;
  }

  .mobile-toggle-btn {
    display: block;
  }

  .brand-logo-img,
  .custom-logo,
  .custom-logo-link img {
    height: 46px;
  }

  .brand-title {
    font-size: 1.1rem;
  }

  .brand-tagline {
    font-size: 0.78rem;
  }

  .header-cta-group .btn-outline {
    display: none;
  }

  .hero-title {
    font-size: 2.35rem;
  }

  .hero-subtitle {
    font-size: 1.45rem;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .prompt-cards-grid {
    grid-template-columns: 1fr;
  }

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

  .gallery-item.span-2 {
    grid-column: span 1;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .floating-quick-bar {
    display: flex;
    gap: 10px;
  }

  .floating-quick-bar .btn {
    flex: 1;
  }

  body {
    padding-bottom: 60px;
  }
}

/* ==========================================================================
   Chronological Timeline UI (สำหรับหน้า ผลงาน & บรรยากาศ)
   ========================================================================== */
.timeline-container {
  position: relative;
  max-width: 1040px;
  margin: 40px auto 0;
  padding: 20px 0;
}

/* Central vertical glowing line */
.timeline-container::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  background: linear-gradient(180deg, var(--color-primary) 0%, rgba(40, 114, 250, 0.7) 50%, rgba(255, 230, 0, 0.3) 100%);
  transform: translateX(-50%);
  border-radius: var(--radius-pill);
}

/* Year Milestone Banner */
.timeline-year-milestone {
  position: relative;
  text-align: center;
  margin: 60px 0 40px;
  z-index: 2;
}

.timeline-year-milestone:first-child {
  margin-top: 0;
}

.timeline-year-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #16223B 0%, #0A0F1D 100%);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 1.25rem;
  font-weight: 800;
  padding: 10px 28px;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 25px rgba(255, 230, 0, 0.25), 0 8px 20px rgba(0, 0, 0, 0.4);
  letter-spacing: 0.5px;
}

/* Timeline Item (Node) */
.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
  box-sizing: border-box;
}

.timeline-item.left {
  left: 0;
  text-align: left;
}

.timeline-item.right {
  left: 50%;
  text-align: left;
}

/* Timeline Node Center Dot */
.timeline-node-dot {
  position: absolute;
  top: 38px;
  width: 20px;
  height: 20px;
  background: var(--bg-dark);
  border: 4px solid var(--color-primary);
  border-radius: 50%;
  z-index: 3;
  box-shadow: 0 0 12px rgba(255, 230, 0, 0.8);
  transition: transform var(--transition-fast);
}

.timeline-item.left .timeline-node-dot {
  right: -10px;
}

.timeline-item.right .timeline-node-dot {
  left: -10px;
}

.timeline-item:hover .timeline-node-dot {
  transform: scale(1.3);
  background: var(--color-primary);
}

/* Timeline Card */
.timeline-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-md);
  position: relative;
}

.timeline-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 20px rgba(255, 230, 0, 0.15);
}

/* Thumbnail wrapper */
.timeline-thumb-wrapper {
  position: relative;
  height: 230px;
  overflow: hidden;
  background: #000;
}

.timeline-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.timeline-card:hover .timeline-thumb {
  transform: scale(1.06);
}

.timeline-badge-overlay {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(10, 15, 29, 0.88);
  backdrop-filter: blur(8px);
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 230, 0, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.timeline-content {
  padding: 24px;
}

.timeline-date-venue {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.timeline-date {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.timeline-venue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.timeline-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.4;
  margin-bottom: 10px;
}

.timeline-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--bg-dark-border);
}

.timeline-tag {
  font-size: 0.76rem;
  padding: 3px 10px;
  background: rgba(40, 114, 250, 0.12);
  color: #93C5FD;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(40, 114, 250, 0.25);
}

/* Responsive Timeline */
@media (max-width: 860px) {
  .timeline-container::before {
    left: 28px;
  }
  .timeline-item {
    width: 100%;
    padding-left: 70px;
    padding-right: 15px;
  }
  .timeline-item.right {
    left: 0;
  }
  .timeline-item.left .timeline-node-dot,
  .timeline-item.right .timeline-node-dot {
    left: 18px;
    right: auto;
  }
  .timeline-year-milestone {
    text-align: left;
    padding-left: 20px;
  }
}

/* Responsive Enhancements for Mobile & Tablets */
.instructor-spotlight-card {
  background: linear-gradient(135deg, rgba(255,230,0,0.06) 0%, rgba(40,114,250,0.06) 100%), var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 50px;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 30px;
  align-items: center;
}

.curator-banner {
  background: linear-gradient(135deg, rgba(255,230,0,0.06) 0%, rgba(40,114,250,0.06) 100%), var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  align-items: center;
}

@media (max-width: 768px) {
  .instructor-spotlight-card,
  .curator-banner {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 24px 16px;
    gap: 20px;
  }
  .instructor-spotlight-card img,
  .curator-banner img {
    margin: 0 auto;
  }
  .filter-tabs-wrapper {
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
  }
  .filter-tab {
    flex-shrink: 0;
  }
}

@media (max-width: 480px) {
  .timeline-container::before {
    left: 18px;
  }
  .timeline-item {
    padding-left: 45px;
    padding-right: 0;
  }
  .timeline-item.left .timeline-node-dot,
  .timeline-item.right .timeline-node-dot {
    left: 9px;
    width: 18px;
    height: 18px;
  }
  .timeline-card {
    padding: 16px;
  }
  .brand-logo-img,
  .custom-logo,
  .custom-logo-link img {
    height: 40px;
  }
  .brand-title {
    font-size: 1.02rem;
  }
  .brand-tagline {
    font-size: 0.72rem;
  }
  .header-cta-group .btn-line {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
  .timeline-title {
    font-size: 1.15rem;
  }
}

/* ==========================================================================
   Reference Sites Showcase & Slideshow (หน้าแรก - หน่วยงานที่เคยบรรยาย)
   ========================================================================== */
.ref-showcase-wrapper {
  margin-top: 30px;
}

.ref-slider-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  box-shadow: var(--shadow-lg);
  max-width: 1060px;
  margin: 0 auto 40px;
}

.ref-slider-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  width: 100%;
}

.ref-slide {
  min-width: 100%;
  position: relative;
  cursor: zoom-in;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ref-slide img {
  width: 100%;
  height: auto;
  max-height: 580px;
  object-fit: contain;
  display: block;
}

.ref-slide-badge {
  position: absolute;
  top: 18px;
  left: 20px;
  background: rgba(10, 15, 29, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 230, 0, 0.4);
  color: var(--color-primary);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  pointer-events: none;
}

.ref-slide-zoom-hint {
  position: absolute;
  bottom: 18px;
  right: 20px;
  background: rgba(10, 15, 29, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-light);
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  pointer-events: none;
}

.ref-slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  background: rgba(10, 15, 29, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition-fast);
}

.ref-slider-btn:hover {
  background: var(--color-primary);
  color: var(--text-dark);
  transform: translateY(-50%) scale(1.1);
}

.ref-slider-btn.prev {
  left: 14px;
}

.ref-slider-btn.next {
  right: 14px;
}

.ref-slider-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
  background: rgba(10, 15, 29, 0.7);
  backdrop-filter: blur(8px);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.ref-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  padding: 0;
}

.ref-dot.active {
  background: var(--color-primary);
  width: 26px;
  border-radius: var(--radius-pill);
}

/* ==========================================================================
   Client Logos Grid & Filter Tabs (ไม่มีโลโก้ซ้ำ ดูสะอาดตา)
   ========================================================================== */
.clients-section-header {
  text-align: center;
  margin-top: 50px;
  margin-bottom: 25px;
}

.clients-category-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.clients-tab-btn {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  color: var(--text-muted);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.clients-tab-btn:hover,
.clients-tab-btn.active {
  background: rgba(255, 230, 0, 0.12);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.clients-logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 14px;
}

.client-logo-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 95px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.client-logo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.25);
}

.client-logo-card img {
  max-width: 90%;
  max-height: 48px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.client-logo-card .client-name {
  font-size: 0.72rem;
  color: #334155;
  margin-top: 7px;
  font-weight: 500;
  line-height: 1.25;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==========================================================================
   Lightbox Zoom Modal (ดูภาพขยายขนาดใหญ่ได้คมชัด)
   ========================================================================== */
.lightbox-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 8, 18, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.lightbox-modal.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  position: relative;
  max-width: 94vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.lightbox-caption {
  color: var(--text-white);
  margin-top: 14px;
  font-size: 0.95rem;
  text-align: center;
  background: rgba(17, 26, 46, 0.85);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
}

.lightbox-close {
  position: absolute;
  top: -46px;
  right: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-white);
  font-size: 1.5rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: var(--transition-fast);
}

.lightbox-close:hover {
  background: var(--color-primary);
  color: var(--text-dark);
  transform: scale(1.1);
}

/* ==========================================================================
   Articles Page & Card Components (บทความดีๆ)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.article-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.article-thumb-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  height: auto;
  overflow: hidden;
  background: #0B1120;
}

.article-thumb-wrapper img,
.article-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.4s ease;
}

.article-card:hover .article-thumb-wrapper img,
.article-card:hover .article-thumb {
  transform: scale(1.05);
}

.article-category-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(10, 15, 29, 0.88);
  backdrop-filter: blur(8px);
  color: var(--color-primary);
  border: 1px solid rgba(255, 230, 0, 0.4);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
}

.article-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-title a:hover {
  color: var(--color-primary);
}

.article-excerpt {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--bg-dark-border);
  padding-top: 14px;
}

.article-read-more {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.article-read-more:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Footer Brand Link & Certificates Grid
   ========================================================================== */
.footer-brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.footer-brand-link:hover {
  transform: translateX(4px);
  opacity: 0.92;
}

.cert-showcase-grid-responsive {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 30px;
}

.cert-card-zoomable {
  cursor: zoom-in;
}

.cert-card-zoomable img {
  transition: transform 0.3s ease;
}

.cert-card-zoomable:hover img {
  transform: scale(1.03);
}

@media (max-width: 640px) {
  .ref-slide img {
    max-height: 300px;
  }
  .ref-slider-btn {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }
  .ref-slide-badge {
    top: 10px;
    left: 10px;
    font-size: 0.75rem;
    padding: 4px 10px;
  }
  .clients-logo-grid {
    grid-template-columns: repeat(auto-fill, minmax(105px, 1fr));
    gap: 10px;
  }
  .client-logo-card {
    min-height: 85px;
    padding: 10px 6px;
  }
  .client-logo-card img {
    max-height: 40px;
  }
  .client-logo-card .client-name {
    font-size: 0.68rem;
  }
}

/* ==========================================================================
   Article Modal & Media Badge Styles (ความรู้ดีๆ & VDO)
   ========================================================================== */
.article-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(4, 8, 18, 0.95);
  backdrop-filter: blur(12px);
  z-index: 99999;
  overflow-y: auto;
  padding: 30px 16px;
}
.article-modal.active {
  display: block;
}
.article-modal-box {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-lg);
  max-width: 820px;
  margin: 40px auto;
  padding: 36px 32px;
  position: relative;
  color: var(--text-light);
}
.article-modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-white);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: var(--transition-fast);
}
.article-modal-close:hover {
  background: var(--color-primary);
  color: var(--text-dark);
}

.video-play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  background: rgba(239, 68, 68, 0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.25rem;
  padding-left: 3px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  transition: all 0.3s ease;
  z-index: 2;
}
.article-thumb-wrapper:hover .video-play-overlay {
  transform: translate(-50%, -50%) scale(1.15);
  background: #dc2626;
  box-shadow: 0 0 25px rgba(239,68,68,0.7);
}
.video-duration-pill {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(0, 0, 0, 0.85);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  z-index: 2;
}
.article-type-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
}
.pill-video {
  background: rgba(239, 68, 68, 0.15);
  color: #EF4444;
  border: 1px solid rgba(239, 68, 68, 0.4);
}
.pill-external {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
  border: 1px solid rgba(16, 185, 129, 0.4);
}
.pill-code {
  background: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.4);
}
.badge-sales {
  color: #F59E0B !important;
  border-color: rgba(245, 158, 11, 0.4) !important;
}
.badge-trainer {
  color: #60A5FA !important;
  border-color: rgba(96, 165, 250, 0.4) !important;
}

/* ==========================================================================
   Free Digital Tools Hub (หน้าคลังเครื่องมือดิจิทัลฟรี)
   ========================================================================== */
.tools-directory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.tool-nav-card {
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  padding: 24px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  position: relative;
}

.tool-nav-card:hover {
  border-color: rgba(255, 230, 0, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.tool-nav-card.active {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, rgba(255, 230, 0, 0.05) 0%, rgba(40, 114, 250, 0.05) 100%), var(--bg-dark-card);
  box-shadow: 0 0 0 1px var(--color-primary), 0 10px 25px rgba(0, 0, 0, 0.4);
}

.tool-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
  flex-shrink: 0;
}

.tool-card-content {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 10px;
  width: fit-content;
}

.badge-popular {
  background: rgba(239, 68, 68, 0.15);
  color: #EF4444;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.tool-card-title {
  font-size: 1.15rem;
  color: var(--text-white);
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.35;
}

.tool-card-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.tool-card-action {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: auto;
}

/* Tool Workspaces */
.tool-workspaces-container {
  margin-top: 10px;
}

.tool-workspace {
  display: none;
  background: var(--bg-dark-card);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  animation: fadeInTool 0.35s ease;
}

.tool-workspace.active {
  display: block;
}

@keyframes fadeInTool {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.tool-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  border-bottom: 1px solid var(--bg-dark-border);
  padding-bottom: 24px;
  margin-bottom: 28px;
}

.tool-tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(255, 230, 0, 0.12);
  border: 1px solid rgba(255, 230, 0, 0.35);
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.tool-title {
  font-size: 1.85rem;
  color: var(--text-white);
  font-weight: 700;
  margin-bottom: 6px;
}

.tool-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0;
}

.tool-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #10B981;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.tool-grid-layout {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 900px) {
  .tool-grid-layout {
    grid-template-columns: 1fr;
  }
  .tool-workspace {
    padding: 24px;
  }
}

.tool-subcard {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 20px;
}

.btn-preset-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text-light);
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-preset-chip:hover {
  background: rgba(255, 230, 0, 0.15);
  border-color: var(--color-primary);
  color: #FFE600;
}

.file-drop-area {
  display: flex;
  align-items: center;
  background: #0A0F1D;
  border: 1px dashed var(--bg-dark-border);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
}

.color-picker-input {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  width: 44px;
  height: 38px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 6px;
}

.color-picker-input::-webkit-color-swatch {
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.qr-canvas-card {
  background: #0A0F1D;
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  padding: 28px;
  display: inline-block;
  width: 100%;
}

/* Tool 2: Word Counter CSS */
.counter-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}

.counter-metric-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: all 0.2s ease;
}

.counter-metric-card.highlight {
  background: rgba(255, 230, 0, 0.06);
  border-color: rgba(255, 230, 0, 0.35);
}

.counter-val {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
  margin-bottom: 4px;
}

.counter-metric-card.highlight .counter-val {
  color: var(--color-primary);
}

.counter-label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.textarea-action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.btn-text-action {
  background: transparent;
  border: none;
  font-size: 0.82rem;
  color: var(--color-primary);
  cursor: pointer;
  padding: 4px 8px;
  transition: opacity 0.2s ease;
}

.btn-text-action:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.btn-text-action.text-danger {
  color: #EF4444;
}

.counter-textarea {
  width: 100%;
  background: #0A0F1D;
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  color: var(--text-white);
  padding: 18px;
  font-family: inherit;
  font-size: 1rem;
  line-height: 1.7;
  resize: vertical;
  min-height: 180px;
}

.counter-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 230, 0, 0.15);
}

.social-limits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.social-limit-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.limit-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-light);
  margin-bottom: 8px;
}

.limit-progress-bg {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 8px;
}

.limit-progress-bar {
  height: 100%;
  border-radius: 999px;
  transition: width 0.3s ease, background 0.3s ease;
}

.limit-badge {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
}

.badge-neutral { background: rgba(255, 255, 255, 0.08); color: var(--text-muted); }
.badge-good { background: rgba(16, 185, 129, 0.15); color: #10B981; }
.badge-warning { background: rgba(239, 68, 68, 0.15); color: #EF4444; }

/* Tool 3: Prompt Builder CSS */
.framework-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn-framework {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--bg-dark-border);
  color: var(--text-light);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.btn-framework:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-primary);
}

.btn-framework.active {
  background: var(--color-primary);
  color: #0A0F1D;
  border-color: var(--color-primary);
  font-weight: 700;
}

.badge-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  color: #0A0F1D;
  border-radius: 4px;
  font-weight: 800;
  font-size: 0.8rem;
  margin-right: 6px;
}

.model-radio-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  cursor: pointer;
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.compiled-prompt-card {
  background: #0A0F1D;
  border: 1px solid var(--bg-dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.compiled-prompt-header {
  padding: 14px 18px;
  background: #0E1628;
  border-bottom: 1px solid var(--bg-dark-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.btn-copy-prompt-glow {
  background: var(--color-primary);
  color: #0A0F1D;
  border: none;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  box-shadow: 0 0 12px rgba(255, 230, 0, 0.35);
}

.btn-copy-prompt-glow:hover {
  background: #FFE600;
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(255, 230, 0, 0.6);
}

.compiled-prompt-box {
  padding: 20px;
  color: #E2E8F0;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.92rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 480px;
  overflow-y: auto;
}