/* ============================================
   MODERN THEME — book-boonphinid.com
   Version: 2.0
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --clr-primary: #0072dd;
  --clr-primary-dark: #005bb5;
  --clr-secondary: #2eb7bd;
  --clr-accent: #62c4d0;
  --clr-gradient-start: #a1b8a4;
  --clr-gradient-end: #2eb7bd;
  --clr-bg: #f0f4f8;
  --clr-bg-light: #f8fafc;
  --clr-white: #ffffff;
  --clr-text: #1e293b;
  --clr-text-muted: #64748b;
  --clr-text-light: #94a3b8;
  --clr-danger: #ef4444;
  --clr-warning: #f59e0b;
  --clr-success: #10b981;
  --clr-info: #3b82f6;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 10px 10px -5px rgba(0,0,0,0.03);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  --font-thai: 'Kanit', sans-serif;
  --container-max: 1200px;
  --navbar-height: 64px;

  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 32px;
  --sp-2xl: 48px;
  --sp-3xl: 64px;
}

/* --- Base --- */
body {
  background-color: var(--clr-bg) !important;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   NAVBAR MODERN
   ============================================ */
.header-global .navbar-main {
  background: linear-gradient(135deg, var(--clr-gradient-start) 0%, var(--clr-gradient-end) 100%) !important;
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  padding: 0.35rem 1.5rem !important;
  min-height: var(--navbar-height);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08) !important;
  transition: all var(--transition-normal);
}

.header-global .navbar-main .navbar-brand img,
.header-global .navbar-main > a > img {
  transition: transform var(--transition-normal);
}

.header-global .navbar-main > a > img:hover {
  transform: scale(1.05);
}

.header-global .navbar-main .nav-link {
  position: relative;
  padding: 0.45rem 0.9rem !important;
  transition: all var(--transition-fast);
  border-radius: var(--radius-full);
  margin: 0 2px;
}

.header-global .navbar-main .nav-link:hover,
.header-global .navbar-main .nav-link:focus {
  background: rgba(255,255,255,0.18);
}

.header-global .navbar-main .nav-link-inner--text {
  font-weight: 500;
  letter-spacing: 0.01em;
  font-size: 15px !important;
}

/* Active nav-link indicator */
.header-global .navbar-main .nav-item.active .nav-link {
  background: rgba(255,255,255,0.22);
}

/* Login / Profile button */
.header-global .navbar-main .btn-neutral,
.header-global .navbar-main .btn-warning {
  border-radius: var(--radius-full) !important;
  padding: 0.4rem 1.2rem !important;
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
  border: none !important;
}

.header-global .navbar-main .btn-neutral:hover,
.header-global .navbar-main .btn-warning:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Dropdown */
.header-global .navbar-main .dropdown-menu {
  border-radius: var(--radius-md) !important;
  border: none !important;
  box-shadow: var(--shadow-lg) !important;
  padding: var(--sp-sm) 0 !important;
  overflow: hidden;
}

.header-global .navbar-main .dropdown-item {
  padding: 0.5rem 1.2rem !important;
  transition: all var(--transition-fast);
  font-family: var(--font-thai);
}

.header-global .navbar-main .dropdown-item:hover {
  background: var(--clr-bg-light) !important;
  padding-left: 1.4rem !important;
}

/* Toggler on mobile */
.header-global .navbar-main .navbar-toggler {
  border: 2px solid rgba(255,255,255,0.4) !important;
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.5rem;
}

/* ============================================
   CAROUSEL MODERN
   ============================================ */
.carousel-wrapper {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-md) var(--sp-md) 0;
}

.carousel-modern {
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.carousel-modern .carousel-item img {
  border-radius: 0;
  width: 100%;
}

.carousel-modern .carousel-indicators {
  bottom: 12px;
  margin-bottom: 0;
}

.carousel-modern .carousel-indicators li {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin: 0 4px;
  background-color: rgba(255,255,255,0.45);
  border: none;
  transition: all var(--transition-normal);
  opacity: 1;
}

.carousel-modern .carousel-indicators li.active {
  background-color: var(--clr-white);
  width: 28px;
  border-radius: 5px;
}

.carousel-modern .carousel-control-prev,
.carousel-modern .carousel-control-next {
  width: 44px;
  height: 44px;
  top: 50%;
  bottom: auto;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 50%;
  opacity: 0;
  transition: all var(--transition-normal);
}

.carousel-modern .carousel-control-prev { left: 12px; }
.carousel-modern .carousel-control-next { right: 12px; }

.carousel-modern:hover .carousel-control-prev,
.carousel-modern:hover .carousel-control-next {
  opacity: 1;
}

.carousel-modern .carousel-control-prev:hover,
.carousel-modern .carousel-control-next:hover {
  background: rgba(255,255,255,0.5);
}

/* ============================================
   STATS HERO
   ============================================ */
.stats-hero {
  max-width: var(--container-max);
  margin: var(--sp-2xl) auto;
  padding: 0 var(--sp-md);
}

.stats-hero .hero-tagline {
  text-align: center;
  margin-bottom: var(--sp-xl);
}

.stats-hero .hero-tagline h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--clr-text);
  font-family: var(--font-thai);
}

.stats-hero .hero-tagline p {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin: var(--sp-sm) auto 0;
  font-family: var(--font-thai);
}

.stats-cards {
  display: flex;
  gap: var(--sp-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--sp-lg);
}

.stat-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--sp-lg) var(--sp-xl);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  transition: all var(--transition-normal);
  min-width: 260px;
  flex: 1;
  max-width: 340px;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.stat-card .stat-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: white;
  flex-shrink: 0;
}

.stat-card .stat-icon.icon-lessons {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
}

.stat-card .stat-icon.icon-exams {
  background: linear-gradient(135deg, var(--clr-secondary), var(--clr-success));
}

.stat-card .stat-info {}

.stat-card .stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1.1;
  font-family: var(--font-thai);
}

.stat-card .stat-label {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  font-weight: 400;
  font-family: var(--font-thai);
}

/* ============================================
   NOTICE / ALERT CARDS (MODERN REDESIGN)
   ============================================ */
.notices-wrapper {
  max-width: var(--container-max);
  margin: 0 auto var(--sp-xl);
  padding: 0 var(--sp-md);
}

.notice-bank-card {
  background: linear-gradient(145deg, #ffffff 0%, #fffef9 60%, #fffdf0 100%);
  border: 1px solid #fde68a;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.08);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.notice-bank-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.14);
}

.notice-bank-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #f59e0b, #fbbf24, #d97706);
}

.notice-bank-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.notice-badge-warning {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fef3c7;
  color: #b45309;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.2px;
}

.notice-bank-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #92400e;
  margin: 0;
  font-family: var(--font-thai);
}

.bank-detail-box {
  background: #ffffff;
  border: 1px solid #fed7aa;
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.03);
}

.bank-info-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bank-pill-icon {
  width: 44px;
  height: 44px;
  background: #fef3c7;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #d97706;
  flex-shrink: 0;
}

.bank-text-group {
  display: flex;
  flex-direction: column;
}

.bank-acc-name {
  font-size: 0.85rem;
  color: #64748b;
  font-weight: 500;
  font-family: var(--font-thai);
}

.bank-acc-num {
  font-size: 1.25rem;
  font-weight: 800;
  color: #b45309;
  letter-spacing: 1px;
  font-family: 'Open Sans', var(--font-thai);
}

.bank-name-sub {
  font-size: 0.78rem;
  color: #94a3b8;
  font-family: var(--font-thai);
}

.btn-copy-acc {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  color: #78350f;
  border: 1px solid #fcd34d;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font-thai);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

.btn-copy-acc:hover {
  background: #fbbf24;
  color: #451a03;
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(245, 158, 11, 0.25);
}

.btn-copy-acc:active {
  transform: translateY(0);
}

.notice-bank-card .bank-caution {
  font-size: 0.82rem;
  color: #b45309;
  margin: 0;
  font-family: var(--font-thai);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Copyright Card */
.notice-law-card {
  background: linear-gradient(145deg, #ffffff 0%, #f4fbfb 60%, #eef8f8 100%);
  border: 1px solid #a7f3d0;
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.06);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.notice-law-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.12);
}

.notice-law-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, #10b981, #2eb7bd, #0072dd);
}

.notice-law-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.notice-badge-law {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #d1fae5;
  color: #065f46;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.notice-law-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #065f46;
  margin: 0;
  font-family: var(--font-thai);
}

.notice-law-text {
  font-size: 0.86rem;
  color: #334155;
  line-height: 1.6;
  margin-bottom: 12px;
  font-family: var(--font-thai);
}

.notice-law-footer {
  font-size: 0.78rem;
  color: #0f766e;
  font-weight: 600;
  font-family: var(--font-thai);
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
}

/* Fallback Notice Cards */
.notices-container {
  max-width: var(--container-max);
  margin: 0 auto var(--sp-lg);
  padding: 0 var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.notice-card {
  padding: var(--sp-md) var(--sp-lg);
  background: var(--clr-white);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--clr-info);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-thai);
}

.notice-card.notice-warning {
  border-left-color: var(--clr-warning);
  background: #fffbeb;
}

.notice-card.notice-danger {
  border-left-color: var(--clr-danger);
  background: #fef2f2;
}

.notice-card.notice-info {
  border-left-color: var(--clr-info);
  background: #eff6ff;
}

.notice-card h5,
.notice-card .notice-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: var(--sp-xs);
  color: var(--clr-text);
}

.notice-card p,
.notice-card .notice-text {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  margin-bottom: 0;
  line-height: 1.6;
}

.notice-card .highlight {
  font-weight: 700;
  color: #b45309;
  font-size: 1rem;
}

/* ============================================
   SECTION HEADINGS
   ============================================ */
.section-heading {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  margin-bottom: var(--sp-lg);
}

.section-heading::before {
  content: '';
  width: 4px;
  height: 32px;
  background: linear-gradient(180deg, var(--clr-primary), var(--clr-accent));
  border-radius: 2px;
  flex-shrink: 0;
}

.section-heading h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
  margin: 0;
  font-family: var(--font-thai);
}

.section-heading .heading-icon {
  width: 32px;
  height: 32px;
  margin-right: 4px;
}

/* ============================================
   MODERN SECTION CONTAINER
   ============================================ */
.modern-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-2xl) var(--sp-md);
}

.modern-section-full {
  padding: var(--sp-2xl) 0;
}

.modern-section-bg {
  background: var(--clr-bg-light);
  padding: var(--sp-2xl) 0;
}

/* ============================================
   COURSE GRID & CARDS
   ============================================ */
.course-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
}

/* See More: hide cards beyond 8 when collapsed in collapsible sections only */
.course-group.collapsible:not(.expanded) .course-grid .course-card:nth-child(n+9) {
  display: none;
}

.course-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.course-card .card-cover {
  position: relative;
  width: 100%;
  padding-top: 140%;
  overflow: hidden;
  background: #e2e8f0;
  display: block;
  cursor: pointer;
}

.course-card .card-cover img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.course-card:hover .card-cover img {
  transform: scale(1.05);
}

.course-card .card-content {
  padding: var(--sp-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-card .card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--sp-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
  font-family: var(--font-thai);
  text-decoration: none !important;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.course-card .card-title:hover {
  color: var(--clr-primary) !important;
}

.course-card .card-meta {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) 0;
  border-top: 1px solid #f1f5f9;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: var(--sp-sm);
  flex-wrap: wrap;
  font-family: var(--font-thai);
}

.course-card .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  white-space: nowrap;
}

.course-card .meta-item img {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  object-fit: cover;
}

.course-card .meta-divider {
  color: #e2e8f0;
  font-size: 0.7rem;
}

.course-card .card-pricing {
  display: flex;
  align-items: baseline;
  gap: var(--sp-sm);
  margin-top: auto;
  margin-bottom: var(--sp-sm);
  flex-wrap: wrap;
}

.course-card .price-original {
  font-size: 0.78rem;
  color: var(--clr-text-light);
  text-decoration: line-through;
}

.course-card .price-sale {
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-primary);
  font-family: var(--font-thai);
}

.course-card .btn-detail {
  display: block;
  text-align: center;
  padding: var(--sp-sm) var(--sp-md);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: white !important;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: var(--font-thai);
  text-decoration: none !important;
  transition: all var(--transition-normal);
  font-size: 0.9rem;
}

.course-card .btn-detail:hover {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  box-shadow: 0 4px 14px rgba(0, 114, 221, 0.35);
  transform: translateY(-1px);
}

/* ============================================
   SEE MORE BUTTON
   ============================================ */
.see-more-wrapper {
  text-align: center;
  margin-top: var(--sp-xl);
}

.btn-see-more {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 0.6rem 2rem;
  background: var(--clr-white);
  border: 2px solid var(--clr-primary);
  color: var(--clr-primary);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-family: var(--font-thai);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  outline: none;
}

.btn-see-more:hover {
  background: var(--clr-primary);
  color: white;
  box-shadow: 0 4px 14px rgba(0, 114, 221, 0.3);
}

.btn-see-more .icon-arrow {
  transition: transform var(--transition-normal);
  font-size: 0.8rem;
}

.course-group.expanded .btn-see-more .icon-arrow {
  transform: rotate(180deg);
}

/* ============================================
   TEST SIMULATION GRID & CARDS
   ============================================ */
.test-sim-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--sp-lg);
}

.test-sim-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.test-sim-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.test-sim-card .sim-cover {
  position: relative;
  width: 100%;
  padding-top: 130%;
  overflow: hidden;
  cursor: pointer;
  background: #e2e8f0;
}

.test-sim-card .sim-cover img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.test-sim-card:hover .sim-cover img {
  transform: scale(1.04);
}

.test-sim-card .sim-content {
  padding: var(--sp-md);
}

.test-sim-card .sim-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-sm);
  font-family: var(--font-thai);
  line-height: 1.5;
}

.test-sim-card .btn-try-free {
  display: block;
  text-align: center;
  padding: var(--sp-sm) var(--sp-md);
  background: linear-gradient(135deg, var(--clr-secondary), var(--clr-success));
  color: white !important;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: var(--font-thai);
  text-decoration: none !important;
  transition: all var(--transition-normal);
  font-size: 0.9rem;
}

.test-sim-card .btn-try-free:hover {
  box-shadow: 0 4px 14px rgba(46,183,189,0.35);
  transform: translateY(-1px);
}

/* ============================================
   FREE VIDEO GRID & CARDS
   ============================================ */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: var(--sp-lg);
}

.video-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.video-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.video-card .video-cover {
  position: relative;
  width: 100%;
  padding-top: 130%;
  overflow: hidden;
  cursor: pointer;
  background: #e2e8f0;
}

.video-card .video-cover img {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.video-card:hover .video-cover img {
  transform: scale(1.04);
}

/* Play button overlay */
.video-card .play-overlay {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  z-index: 2;
}

.video-card:hover .play-overlay {
  opacity: 1;
}

.play-overlay::after {
  content: '';
  display: block;
  width: 0; height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--clr-primary);
  margin-left: 3px;
}

.video-card .video-content {
  padding: var(--sp-md);
}

.video-card .video-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 2px;
  font-family: var(--font-thai);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-card .video-course-name {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-bottom: var(--sp-sm);
  font-family: var(--font-thai);
}

.video-card .btn-watch-free {
  display: block;
  text-align: center;
  padding: var(--sp-sm) var(--sp-md);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  color: white !important;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-family: var(--font-thai);
  text-decoration: none !important;
  transition: all var(--transition-normal);
  font-size: 0.9rem;
}

.video-card .btn-watch-free:hover {
  box-shadow: 0 4px 14px rgba(0, 114, 221, 0.3);
}

/* ============================================
   BOOK SECTION
   ============================================ */
.book-section-bg {
  background: linear-gradient(135deg, #fbc94018 0%, #8fff6d15 100%);
  padding: var(--sp-2xl) 0;
}

.book-header-img {
  width: 100%;
  max-width: 100%;
  margin-bottom: var(--sp-lg);
  border-radius: var(--radius-md);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-md);
  margin-bottom: var(--sp-2xl);
}

.book-grid .book-item {
  overflow: hidden;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.book-grid .book-item img {
  width: 100%;
  display: block;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.book-grid .book-item img:hover {
  transform: scale(1.04);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   SKELETON LOADING PLACEHOLDERS
   ============================================ */
.skeleton-wrapper {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-xl) var(--sp-md);
}

.skeleton-heading {
  height: 28px;
  width: 220px;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
  margin-bottom: var(--sp-lg);
}

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-lg);
}

.skeleton-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
}

.skeleton-card .skeleton-img {
  width: 100%;
  padding-top: 140%;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.skeleton-card .skeleton-body {
  padding: var(--sp-md);
}

.skeleton-line {
  height: 12px;
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
  margin-bottom: var(--sp-sm);
}

.skeleton-line.w-60 { width: 60%; }
.skeleton-line.w-40 { width: 40%; }

.skeleton-btn {
  height: 36px;
  margin-top: var(--sp-sm);
  background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ============================================
   FOOTER MODERN
   ============================================ */
.footer-modern {
  background: linear-gradient(160deg, #1b8e96 0%, #2fb7bd 50%, #167078 100%) !important;
  color: #ffffff !important;
  padding: 0 !important;
  font-family: var(--font-thai);
  position: relative;
  overflow: hidden;
}

.footer-modern::before {
  content: '';
  display: block;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #8fff6d, #62c4d0, #0072dd);
}

.footer-modern .footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--sp-2xl) var(--sp-md) var(--sp-md);
}

.footer-modern .footer-logo {
  width: 220px;
  max-width: 100%;
  transition: transform var(--transition-normal);
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.12));
}

.footer-modern .footer-logo:hover {
  transform: scale(1.03);
}

.footer-modern .footer-tagline {
  color: rgba(255,255,255,0.9);
  font-size: 0.92rem;
  margin-top: var(--sp-sm);
  margin-bottom: var(--sp-lg);
  line-height: 1.5;
}

.footer-modern .footer-col-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff !important;
  margin-bottom: var(--sp-md);
  position: relative;
  padding-bottom: 8px;
}

.footer-modern .footer-col-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: #ffffff;
  border-radius: 2px;
}

.footer-modern .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-modern .footer-links a {
  color: rgba(255,255,255,0.9) !important;
  text-decoration: none !important;
  transition: all var(--transition-fast);
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-modern .footer-links a:hover {
  color: #ffffff !important;
  transform: translateX(4px);
  text-shadow: 0 0 8px rgba(255,255,255,0.4);
}

/* Contact Cards in Footer */
.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.18);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-md);
  color: #ffffff !important;
  text-decoration: none !important;
  transition: all var(--transition-normal);
  font-size: 0.9rem;
}

.footer-contact-btn:hover {
  background: rgba(255,255,255,0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.12);
}

.footer-contact-btn img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  flex-shrink: 0;
}

.footer-contact-btn .contact-text {
  display: flex;
  flex-direction: column;
}

.footer-contact-btn .contact-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.8);
}

.footer-contact-btn .contact-val {
  font-weight: 600;
  color: #ffffff;
  font-size: 0.95rem;
}

/* Facebook iframe Card */
.footer-fb-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  max-width: 420px;
  margin: 0 auto;
}

.footer-fb-card iframe {
  display: block;
  width: 100%;
  height: 500px;
  border: none;
}

/* Footer Bottom */
.footer-modern .footer-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.22);
  margin: var(--sp-xl) 0 var(--sp-md);
}

.footer-modern .footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  padding-bottom: var(--sp-md);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.85);
}

.footer-modern .footer-bottom a {
  color: #ffffff !important;
  font-weight: 500;
  text-decoration: underline !important;
}

.footer-modern .footer-bottom .btn-back-top {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-full);
  color: #ffffff !important;
  text-decoration: none !important;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.footer-modern .footer-bottom .btn-back-top:hover {
  background: rgba(255,255,255,0.35);
  transform: translateY(-2px);
}

.footer-modern .footer-bottom p {
  font-size: 0.78rem;
  color: #475569;
  margin: 0;
}

.footer-modern .footer-bottom a {
  color: #64748b;
  text-decoration: none;
  font-size: 0.82rem;
  transition: color var(--transition-fast);
}

.footer-modern .footer-bottom a:hover {
  color: var(--clr-accent);
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */
@media (max-width: 1199.98px) {
  .course-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .book-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .skeleton-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 991.98px) {
  :root {
    --navbar-height: 56px;
  }
  .stats-cards {
    gap: var(--sp-md);
  }
  .stat-card {
    min-width: 200px;
    padding: var(--sp-md);
  }
  .stat-card .stat-number {
    font-size: 1.6rem;
  }
  .section-heading h3 {
    font-size: 1.25rem;
  }
  .course-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .skeleton-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767.98px) {
  .carousel-wrapper {
    padding: var(--sp-sm) var(--sp-sm) 0;
  }
  .stats-hero {
    margin: var(--sp-xl) auto;
  }
  .stats-cards {
    flex-direction: column;
    align-items: stretch;
  }
  .stat-card {
    min-width: unset;
    max-width: unset;
  }
  .course-grid,
  .test-sim-grid,
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-md);
  }
  .book-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .skeleton-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .notices-container {
    padding: 0 var(--sp-sm);
  }
  .modern-section {
    padding: var(--sp-xl) var(--sp-md);
  }
  .stats-hero .hero-tagline h2 {
    font-size: 1.4rem;
  }
  .footer-modern .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-modern .footer-bottom {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 479.98px) {
  .course-grid,
  .test-sim-grid,
  .video-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-sm);
  }
  .book-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-sm);
  }
  .skeleton-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-hero .hero-tagline h2 {
    font-size: 1.2rem;
  }
  .stat-card .stat-number {
    font-size: 1.3rem;
  }
  .footer-modern .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in-up {
  animation: fadeInUp 0.5s ease-out both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Stagger children animation */
.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }
.stagger-children > *:nth-child(7) { animation-delay: 0.35s; }
.stagger-children > *:nth-child(8) { animation-delay: 0.4s; }

/* ============================================
   UTILITY OVERRIDES
   ============================================ */
/* Override Argon's shadow class to be more subtle */
.card.shadow,
.card-lift.shadow {
  box-shadow: var(--shadow-md) !important;
}

/* Smooth scroll */
html {
  scroll-behavior: smooth;
}

/* Better scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 8px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--clr-primary), var(--clr-accent));
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--clr-primary-dark);
}