/* CSS Design System - FunnyHSF Digital Hub */
:root {
  --bg-primary: #070d19; /* Deep Navy Blue from bobhsf.com */
  --bg-secondary: #0a1324; /* Clean dark navy */
  --bg-card: rgba(14, 25, 47, 0.7); /* Deep navy glass card */
  --bg-card-hover: rgba(22, 38, 70, 0.9);

  --accent-cyan: #00d2ff; /* Vibrant Cyan from bobhsf.com */
  --accent-blue: #3b82f6; /* Blue */
  --accent-purple: #1e3a8a; /* Deep Blue background layer */
  --accent-pink: #fbbf24; /* Vibrant Gold/Yellow from bobhsf.com */
  --accent-gold: #fbbf24; /* Gold */
  --accent-green: #10b981;

  --gradient-main: linear-gradient(135deg, #fbbf24 0%, #00d2ff 100%); /* Gold to Cyan gradient */
  --gradient-purple-pink: linear-gradient(135deg, #fbbf24 0%, #10b981 100%);
  --gradient-text: linear-gradient(135deg, #ffffff 40%, #fbbf24 100%); /* White to Gold text */

  --text-primary: #ffffff;
  --text-secondary: #94a3b8; /* Slate gray secondary text */
  --text-muted: #64748b;

  --border-color: rgba(255, 255, 255, 0.06);
  --border-highlight: rgba(0, 210, 255, 0.35); /* Cyan border glow */

  --shadow-glow-cyan: 0 0 25px rgba(0, 210, 255, 0.2);
  --shadow-glow-purple: 0 0 25px rgba(251, 191, 36, 0.2);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', 'Sarabun', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', 'Sarabun', sans-serif;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Background Glowing Orbs */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  z-index: 0;
  pointer-events: none;
  opacity: 0.15;
  animation: orbFloat 25s infinite alternate ease-in-out;
}

.bg-orb-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-purple);
  top: -150px;
  left: -150px;
}

.bg-orb-2 {
  width: 600px;
  height: 600px;
  background: var(--accent-cyan);
  bottom: -200px;
  right: -150px;
  animation-delay: -5s;
}

.bg-orb-3 {
  width: 350px;
  height: 350px;
  background: var(--accent-pink);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -10s;
}

@keyframes orbFloat {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -60px) scale(1.15); }
  100% { transform: translate(-30px, 40px) scale(0.9); }
}

/* Header & Navigation */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(3, 2, 6, 0.8);
  border-bottom: 1px solid var(--border-color);
  padding: 0.8rem 2rem;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo-icon {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 1.6rem;
}

.logo-badge {
  background: var(--gradient-main);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
  color: #000;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}

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

.nav-link.active {
  color: var(--accent-cyan);
  border-bottom: 2px solid var(--accent-cyan);
  border-radius: 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.cart-trigger-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: var(--transition-fast);
}

.cart-trigger-btn:hover {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.lang-switcher-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 0.8rem;
  border-radius: 50px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-switcher-btn:hover {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--accent-pink);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.35rem;
  border-radius: 50px;
}

.btn-login-mock {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-login-mock:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--text-primary);
}

.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.3);
  padding: 0.4rem 0.9rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.user-profile-badge button {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  margin-left: 0.3rem;
  transition: var(--transition-fast);
}

.user-profile-badge button:hover {
  color: var(--accent-pink);
}

/* Layout */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  position: relative;
  z-index: 1;
}

.view-section {
  display: none;
  animation: viewFadeIn 0.35s ease forwards;
}

.view-section.active {
  display: block;
}

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

/* Hero Section */
.hero {
  text-align: center;
  padding: 3rem 1rem 4rem;
  max-width: 800px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(121, 40, 202, 0.15);
  border: 1px solid rgba(121, 40, 202, 0.3);
  color: #c084fc;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.2rem;
  color: var(--text-primary);
}

.hero-title span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--gradient-main);
  color: #000;
  border: none;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-glow-cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(0, 242, 254, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-normal);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Stats */
.stats-banner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 3.5rem;
}

.stat-item h3 {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-item p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

/* About Author */
.about-author-section {
  margin-top: 4.5rem;
  padding-top: 3.5rem;
  border-top: 1px solid var(--border-color);
}

.author-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (max-width: 768px) {
  .author-grid { grid-template-columns: 1fr; }
}

.author-image-placeholder {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-card-inner {
  text-align: center;
}

.author-avatar-icon {
  font-size: 4.5rem;
  color: var(--accent-cyan);
  margin-bottom: 1rem;
  background: rgba(0, 242, 254, 0.08);
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed rgba(0, 242, 254, 0.3);
}

.profile-card-inner h3 {
  font-size: 1.25rem;
  margin-bottom: 0.2rem;
}

.profile-card-inner p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.social-pills {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.social-pills a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.social-pills a:hover {
  background: var(--accent-cyan);
  color: #000;
}

.author-content h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.section-heading-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.author-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.author-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.auth-feat-item {
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
}

.auth-feat-item i {
  color: var(--accent-cyan);
  font-size: 1.1rem;
  margin-top: 0.2rem;
}

.auth-feat-item h4 {
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.auth-feat-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Store Styles */
.store-header, .blog-header {
  text-align: center;
  margin-bottom: 2rem;
}

.store-header h2, .blog-header h2 {
  font-size: 2.2rem;
  margin-bottom: 0.4rem;
}

.store-header p, .blog-header p {
  color: var(--text-secondary);
}

.filter-bar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.search-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 280px;
  position: relative;
}

.search-box i {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem 0.75rem 2.8rem;
  color: var(--text-primary);
  font-size: 0.92rem;
  outline: none;
  transition: var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.1);
}

.tier-filter {
  display: flex;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.25rem;
}

.filter-chip {
  padding: 0.4rem 1rem;
  border-radius: var(--radius-sm);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-chip.active {
  background: var(--accent-cyan);
  color: #000;
}

.category-scroll {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.4rem;
}

.cat-btn {
  white-space: nowrap;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.45rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.cat-btn:hover, .cat-btn.active {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
}

.cat-btn.active {
  background: rgba(0, 242, 254, 0.15);
  color: var(--accent-cyan);
}

/* Products Grid */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.prod-thumb {
  height: 170px;
  background-size: cover;
  background-position: center;
  position: relative;
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.prod-thumb-fallback {
  font-size: 3rem;
  color: rgba(255, 255, 255, 0.1);
}

.prod-badges {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  right: 0.75rem;
  display: flex;
  justify-content: space-between;
}

.badge-tag {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 50px;
  text-transform: uppercase;
}

.badge-free {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pro {
  background: rgba(251, 191, 36, 0.2);
  color: var(--accent-gold);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.prod-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.prod-cat {
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.prod-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  line-height: 1.35;
}

.prod-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.prod-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;
}

.prod-price {
  font-size: 1.15rem;
  font-weight: 800;
}

.price-original {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: line-through;
  margin-right: 0.3rem;
}

.btn-action-card {
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--accent-cyan);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-action-card:hover {
  background: var(--accent-cyan);
  color: #000;
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(3, 5, 12, 0.8);
  backdrop-filter: blur(10px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
  padding: 1.5rem;
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.product-detail-container, .checkout-modal-container, .blog-detail-container, .login-modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 2.5rem;
  animation: modalSlideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes modalSlideUp {
  from { transform: translateY(20px) scale(0.95); }
  to { transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 0, 127, 0.15);
  color: var(--accent-pink);
}

/* Product Detail UI */
.detail-grid {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2rem;
}

@media (max-width: 576px) {
  .detail-grid { grid-template-columns: 1fr; }
}

.detail-thumb-box {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  height: max-content;
}

.detail-fallback-icon {
  font-size: 5rem;
  color: var(--accent-cyan);
}

.detail-info h2 {
  font-size: 1.7rem;
  margin-bottom: 0.5rem;
}

.detail-meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.82rem;
}

.detail-meta span i {
  color: var(--accent-cyan);
  margin-right: 0.2rem;
}

.detail-desc {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 0.92rem;
}

.detail-section-title {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.25rem;
}

.detail-list {
  list-style: none;
  margin-bottom: 1.5rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.detail-list li {
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.detail-list li i {
  color: var(--accent-green);
}

.detail-checkout-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.detail-price-box {
  display: flex;
  flex-direction: column;
}

.detail-price-box span {
  font-size: 1.5rem;
  font-weight: 800;
}

/* Sidebar Cart */
.cart-sidebar {
  position: fixed;
  top: 0;
  right: -380px;
  width: 380px;
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  z-index: 250;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
}

@media (max-width: 400px) {
  .cart-sidebar { width: 100%; right: -100%; }
}

.cart-sidebar.active {
  right: 0;
}

.sidebar-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 240;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}

.sidebar-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.cart-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.close-cart-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.25rem;
  cursor: pointer;
}

.cart-items-wrapper {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.cart-empty {
  text-align: center;
  color: var(--text-muted);
  margin-top: 3rem;
}

.cart-empty i {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.cart-item {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  padding: 0.75rem;
  border-radius: var(--radius-md);
}

.cart-item-info {
  flex: 1;
}

.cart-item-title {
  font-size: 0.88rem;
  font-weight: 600;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cart-item-price {
  font-size: 0.85rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.remove-cart-item {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.remove-cart-item:hover {
  color: var(--accent-pink);
}

.cart-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.25);
}

.cart-promo {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.cart-promo input {
  flex: 1;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  color: white;
  font-size: 0.8rem;
  outline: none;
}

.cart-promo button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
}

#promo-message {
  font-size: 0.8rem;
  margin-bottom: 0.8rem;
}

.cart-pricing {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.price-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.discount-row {
  color: var(--accent-green);
}

.total-row {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
  border-top: 1px solid var(--border-color);
  padding-top: 0.4rem;
}

.checkout-btn {
  width: 100%;
  background: var(--gradient-main);
  border: none;
  color: #000;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: var(--shadow-glow-cyan);
  transition: var(--transition-fast);
}

.checkout-btn:hover {
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.35);
}

/* Checkout Dialog Modal */
.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

@media (max-width: 768px) {
  .checkout-grid { grid-template-columns: 1fr; }
}

.checkout-form-side, .checkout-payment-side {
  display: flex;
  flex-direction: column;
}

.checkout-grid h3 {
  font-size: 1.3rem;
  margin-bottom: 0.3rem;
}

.form-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.form-group {
  margin-bottom: 1.2rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}

.required {
  color: var(--accent-pink);
}

.form-control {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.9rem;
  color: var(--text-primary);
  outline: none;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-cyan);
}

textarea.form-control {
  min-height: 80px;
  resize: vertical;
}

.payment-amount-box {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  margin-bottom: 1.25rem;
  text-align: center;
  font-size: 0.95rem;
}

.payment-amount {
  color: var(--accent-green);
  font-size: 1.2rem;
  font-weight: 800;
}

.promptpay-qr-box {
  text-align: center;
  margin-bottom: 1.5rem;
  background: white;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  color: #070913;
}

.qr-container {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.mock-qr-svg {
  display: block;
}

.promptpay-badge {
  background: #003566;
  color: white;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}

.qr-instruction {
  font-size: 0.78rem;
  color: #64748b;
  margin-top: 0.5rem;
  font-weight: 500;
}

.slip-upload-area {
  border: 2px dashed rgba(0, 242, 254, 0.35);
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-fast);
  position: relative;
}

.slip-upload-area:hover {
  background: rgba(0, 242, 254, 0.05);
  border-color: var(--accent-cyan);
}

.slip-upload-icon {
  font-size: 2.2rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.dropzone-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.slip-preview-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  font-size: 0.82rem;
}

.remove-slip-btn {
  background: transparent;
  border: none;
  color: var(--accent-pink);
  cursor: pointer;
}

.btn-confirm-payment {
  width: 100%;
  background: var(--gradient-purple-pink);
  color: white;
  border: none;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: var(--shadow-glow-purple);
  transition: var(--transition-fast);
}

.btn-confirm-payment:hover {
  box-shadow: 0 0 20px rgba(255, 0, 127, 0.4);
}

/* User Settings Area & Login */
.w-full {
  width: 100%;
}

.login-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

/* Library (Student Dashboard) UI */
.library-header-banner {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.lib-welcome h2 {
  font-size: 1.8rem;
  margin-bottom: 0.2rem;
}

.lib-welcome p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.lib-status-pills {
  display: flex;
  gap: 0.6rem;
}

.quota-pill {
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  color: var(--accent-cyan);
  padding: 0.4rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
}

.unauth-container {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
}

.lib-lock-icon {
  font-size: 3.5rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.unauth-container h3 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.unauth-container p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.hidden {
  display: none !important;
}

.lib-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
  padding-bottom: 0.25rem;
}

.lib-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.6rem 1.25rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: var(--transition-fast);
}

.lib-tab-btn:hover {
  color: var(--text-primary);
}

.lib-tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.lib-tab-panel {
  display: none;
}

.lib-tab-panel.active {
  display: block;
}

.ebooks-download-grid, .courses-learning-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.lib-ebook-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.lib-ebook-icon {
  font-size: 2.2rem;
  color: var(--accent-cyan);
}

.lib-ebook-info {
  flex: 1;
}

.lib-ebook-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.btn-download-ebook {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-green);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.btn-download-ebook:hover {
  background: var(--accent-green);
  color: #000;
}

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

.lib-course-thumb {
  height: 140px;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-secondary);
}

.lib-course-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.lib-course-content h4 {
  font-size: 1rem;
  font-weight: 700;
}

.btn-enter-classroom {
  width: 100%;
  background: var(--gradient-main);
  color: #000;
  border: none;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
}

.btn-enter-classroom:hover {
  box-shadow: var(--shadow-glow-cyan);
}

/* Classroom UI Overlay */
.classroom-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-primary);
  z-index: 300;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-normal);
}

.classroom-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.classroom-header {
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.class-title-area {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.btn-back-lib {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: white;
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-back-lib:hover {
  background: rgba(255, 255, 255, 0.1);
}

#class-course-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.class-progress {
  font-size: 0.88rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.classroom-body {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 340px;
  overflow: hidden;
}

@media (max-width: 900px) {
  .classroom-body { grid-template-columns: 1fr; overflow-y: auto; }
}

.classroom-video-col {
  padding: 2rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.video-player-wrapper {
  background: black;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  aspect-ratio: 16/9;
}

.custom-video-player {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: #000;
}

.mock-video-canvas {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
}

.mock-video-play-btn {
  font-size: 3.5rem;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(0, 242, 254, 0.15);
  width: 90px;
  height: 90px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.3);
  transition: var(--transition-fast);
}

.custom-video-player:hover .mock-video-play-btn {
  transform: scale(1.1);
  color: white;
}

.mock-video-title {
  position: absolute;
  bottom: 1rem;
  left: 1.5rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

.video-controls-bar {
  background: rgba(14, 19, 34, 0.95);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.video-controls-bar button {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1rem;
}

.video-progress-timeline {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  position: relative;
  cursor: pointer;
}

.timeline-loaded {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.15);
  width: 60%;
}

.timeline-play-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--accent-cyan);
  width: 0%;
  border-radius: 10px;
}

.video-time {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.classroom-lesson-desc h4 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.classroom-lesson-desc p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.lesson-materials-box {
  margin-top: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: var(--radius-md);
}

.lesson-materials-box h5 {
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
  color: var(--accent-cyan);
}

.materials-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  transition: var(--transition-fast);
}

.materials-list a:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}

.classroom-sidebar-col {
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.classroom-sidebar-col h4 {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 1.05rem;
}

.lessons-list {
  flex: 1;
  overflow-y: auto;
}

.lesson-item {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  display: flex;
  gap: 0.8rem;
  align-items: flex-start;
  cursor: pointer;
  transition: var(--transition-fast);
}

.lesson-item:hover {
  background: rgba(255, 255, 255, 0.02);
}

.lesson-item.active {
  background: rgba(0, 242, 254, 0.05);
  border-left: 3px solid var(--accent-cyan);
}

.lesson-status-icon {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 0.15rem;
}

.lesson-item.completed .lesson-status-icon {
  color: var(--accent-green);
}

.lesson-item.active .lesson-status-icon {
  color: var(--accent-cyan);
}

.lesson-title-text {
  font-size: 0.88rem;
  font-weight: 500;
}

.lesson-duration {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* Blog Styles */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.8rem;
}

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

.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
}

.blog-thumb {
  height: 150px;
  background-size: cover;
  background-position: center;
  background-color: var(--bg-secondary);
}

.blog-card-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.blog-tag {
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 700;
  text-transform: uppercase;
}

.blog-card-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.4;
}

.blog-card-content p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: 0.8rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.btn-read-blog {
  background: transparent;
  border: none;
  color: var(--accent-cyan);
  font-weight: 700;
  cursor: pointer;
}

/* Blog Detail Modal Styling */
.blog-detail-container {
  max-width: 700px;
}

.blog-detail-header {
  margin-bottom: 1.5rem;
}

.blog-detail-tag {
  color: var(--accent-cyan);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.blog-detail-header h2 {
  font-size: 1.8rem;
  line-height: 1.3;
}

.blog-detail-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.blog-detail-body {
  font-size: 0.95rem;
  color: #e2e8f0;
  line-height: 1.8;
}

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

.blog-detail-body h3 {
  font-size: 1.25rem;
  color: var(--text-primary);
  margin: 1.5rem 0 0.75rem;
  border-left: 3px solid var(--accent-cyan);
  padding-left: 0.6rem;
}

/* Footer Styling */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem 1.5rem;
  margin-top: 5rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  max-width: 1200px;
  margin: 1.5rem auto 0;
  display: flex;
  justify-content: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}