/* ==========================================================================
   TEMUAN.MY.ID - Marketplace Digital Template K3 Konstruksi
   Design System: Mobile First, High Performance, Non-AI Slop Aesthetic
   Palette: Base White #ffffff, Blue #0854c2, Safety Yellow #fcd702
   ========================================================================== */

/* 1. CSS Variables & Reset */
:root {
  --bg-main: #ffffff;
  --bg-alt: #f8fafc;
  --bg-card: #ffffff;
  
  --primary-blue: #0854c2;
  --primary-blue-hover: #064096;
  --primary-blue-light: #eff6ff;
  --primary-blue-border: #bfdbfe;
  
  --text-dark: #0f172a;
  --text-muted: #475569;
  --text-light: #94a3b8;
  
  --border-color: #e2e8f0;
  --border-focus: #0854c2;
  
  --success: #10b981;
  --danger: #ef4444;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Golos Text', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.hero-title,
.section-title,
.product-title,
.feature-title,
.footer-title,
.logo,
.hero-tag,
.badge,
.price-current {
  font-family: var(--font-heading);
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }
}

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

img, svg {
  display: block;
  max-width: 100%;
}

button, input, select {
  font: inherit;
}

/* 2. Utility Layout Classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

.text-center { text-align: center; }
.text-primary { color: var(--primary-blue); }
.text-muted { color: var(--text-muted); }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }

/* 3. Top Notification Bar */
.top-bar {
  background-color: var(--text-dark);
  color: #ffffff;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.top-bar .highlight {
  background-color: var(--primary-blue);
  color: #ffffff;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.75rem;
}

/* 4. Navigation Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: -0.02em;
}

.logo-badge {
  background-color: var(--primary-blue);
  color: #ffffff;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
}

.search-box {
  display: none;
  flex: 1;
  max-width: 420px;
  position: relative;
}

@media (min-width: 640px) {
  .search-box {
    display: block;
  }
}

.search-input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background-color: var(--bg-alt);
  font-size: 0.875rem;
  transition: var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(8, 84, 194, 0.15);
}

.search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  width: 16px;
  height: 16px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-btn {
  background: transparent;
  border: none;
  padding: 0.5rem;
  color: var(--text-dark);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.875rem;
  font-weight: 600;
}

.nav-btn:hover {
  background-color: var(--bg-alt);
}

/* 5. Buttons & Badges */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-blue-hover);
  box-shadow: 0 4px 12px rgba(8, 84, 194, 0.25);
}

.btn-yellow {
  background-color: var(--primary-blue);
  color: #ffffff;
}

.btn-yellow:hover {
  background-color: var(--primary-blue-hover);
  box-shadow: 0 4px 12px rgba(8, 84, 194, 0.25);
}

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

.btn-outline:hover {
  background-color: var(--bg-alt);
  border-color: var(--text-muted);
}

.btn-sm {
  padding: 0.4rem 0.85rem;
  font-size: 0.8125rem;
}

.btn-block {
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-blue {
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
}

.badge-yellow {
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue-border);
}

.badge-excel {
  background-color: #dcfce7;
  color: #15803d;
}

.badge-ppt {
  background-color: #ffedd5;
  color: #c2410c;
}

.badge-word {
  background-color: #e0f2fe;
  color: #0369a1;
}

/* 6. Hero Section Mobile First */
.hero {
  padding: 2.5rem 0 2rem;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-alt) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue-border);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

@media (max-width: 767px) {
  .hero-grid > div:first-child {
    text-align: center;
  }
  .hero-title {
    text-align: center;
    font-size: 1.85rem;
  }
  .hero-description {
    text-align: center;
  }
  .hero-grid a.btn,
  .hero-cta-btn {
    width: 100% !important;
    max-width: 100% !important;
    display: flex !important;
  }
  .hero-grid .decorative-handwriting {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-microcopy {
    justify-content: center !important;
  }
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 2.75rem;
  }
  .hero-cta-btn {
    max-width: 320px;
  }
}

.hero-description {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--border-color);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.trust-icon {
  color: var(--primary-blue);
  width: 18px;
  height: 18px;
}

.hero-card-preview {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-card-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, #60a5fa 100%);
}

/* 7. Category Filter & Search */
.filter-section {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  background-color: #ffffff;
  position: sticky;
  top: 64px;
  z-index: 90;
}

.filter-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-wrapper::-webkit-scrollbar {
  display: none;
}

.filter-tab {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-alt);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  font-size: 0.84rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-tab.active, .filter-tab:hover {
  background-color: var(--primary-blue);
  color: #ffffff;
  border-color: var(--primary-blue);
}

/* 8. Product Cards Grid */
.products-section {
  padding: 2.5rem 0;
  background-color: var(--bg-alt);
}

.section-header {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-dark);
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-normal);
  position: relative;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-blue);
}

.product-badges {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.product-title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

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

.product-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.product-rating {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: #d97706;
  font-weight: 700;
}

.product-price-box {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--bg-alt);
}

.price-current {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-blue);
}

.price-original {
  font-size: 0.875rem;
  color: var(--text-light);
  text-decoration: line-through;
}

.product-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: auto;
}

/* 9. Feature & Trust Section */
.features-section {
  padding: 3rem 0;
  background-color: #ffffff;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background-color: var(--bg-alt);
  border: 1px solid var(--border-color);
}

@media (max-width: 767px) {
  .feature-card {
    padding: 1rem;
  }
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 10. Landing Page Specific Styles */
.landing-hero {
  padding: 3rem 0 2rem;
  background: linear-gradient(135deg, #0854c2 0%, #042a66 100%);
  color: #ffffff;
}

.landing-hero .hero-title {
  color: #ffffff;
}

.landing-hero .hero-description {
  color: #cbd5e1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: #94a3b8;
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: #e2e8f0;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
}

@media (min-width: 900px) {
  .detail-layout {
    grid-template-columns: 2fr 1fr;
  }
}

.detail-card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.sticky-sidebar {
  position: sticky;
  top: 80px;
}

.buy-box {
  background-color: #ffffff;
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
}

.check-list {
  list-style: none;
  margin: 1rem 0;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-dark);
  margin-bottom: 0.6rem;
}

.check-icon {
  color: var(--primary-blue);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* 11. Mobile Bottom Bar Sticky Navigation */
.mobile-bottom-nav {
  display: none !important;
}

@media (min-width: 768px) {
  .mobile-bottom-nav {
    display: none;
  }
}

.nav-item-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-muted);
  gap: 0.2rem;
  flex: 1;
  height: 100%;
}

.nav-item-bottom.active {
  color: var(--primary-blue);
  font-weight: 700;
}

.nav-item-bottom svg {
  width: 20px;
  height: 20px;
}

/* 12. Modal Lightbox Preview */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 1.5rem;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--bg-alt);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* 13. Footer */
.footer {
  background-color: var(--text-dark);
  color: #94a3b8;
  padding: 3rem 0 1.5rem;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-title {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.8125rem;
}

/* Additional Component Styles for Custom Landing Page Copywriting */

.decorative-handwriting {
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  border-left: 3px solid var(--primary-blue);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin: 0.75rem 0;
  font-size: 0.9rem;
  font-weight: 700;
}

.pain-point-list {
  list-style: none;
  margin: 1.5rem 0;
}

.pain-point-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background-color: #fef2f2;
  border: 1px solid #fee2e2;
  border-radius: var(--radius-sm);
  margin-bottom: 0.65rem;
  color: #991b1b;
  font-size: 0.9rem;
  font-weight: 600;
}

.before-after-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .before-after-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.ba-card {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background-color: #ffffff;
}

.ba-card.old-way {
  border-color: #fca5a5;
  background-color: #fff5f5;
}

.ba-card.new-way {
  border-color: #93c5fd;
  background-color: #eff6ff;
}

.ba-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.old-way .ba-tag {
  background-color: #fee2e2;
  color: #991b1b;
}

.new-way .ba-tag {
  background-color: var(--primary-blue);
  color: #ffffff;
}

.explorer-box {
  background-color: #0f172a;
  color: #e2e8f0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  padding: 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  line-height: 1.6;
  border: 1px solid #1e293b;
  overflow-x: auto;
  box-shadow: var(--shadow-lg);
}

.explorer-callout {
  background-color: var(--primary-blue-light);
  border: 1px solid var(--primary-blue-border);
  color: var(--text-dark);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-top: 1.25rem;
  font-size: 0.875rem;
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

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

.countdown-box {
  background-color: var(--text-dark);
  color: #ffffff;
  padding: 1rem;
  border-radius: var(--radius-md);
  text-align: center;
  margin: 1.25rem 0;
}

.timer-digits {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: #60a5fa;
  letter-spacing: 0.1em;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
}

.faq-details summary {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  padding: 0.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}

.faq-details summary::-webkit-details-marker {
  display: none;
}

.faq-details summary::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary-blue);
  transition: transform var(--transition-fast);
}

.faq-details[open] summary::after {
  content: '−';
}

.faq-answer {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  padding: 0.5rem 0 0.75rem;
}

/* User Review Profile Avatar */
.testimonial-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-top: 1px solid var(--border-color);
  padding-top: 0.85rem;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  font-family: var(--font-heading);
  flex-shrink: 0;
}

/* Fitur Utama Inline Title & Number Badge */
.feature-header-inline {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.feature-header-inline .feature-title {
  margin-bottom: 0;
  font-size: 1.1rem;
}

/* Mobile Tab Switch for Before vs After */
.ba-mobile-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  background-color: var(--bg-alt);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .ba-mobile-tabs {
    display: none;
  }
}

.ba-tab-btn {
  flex: 1;
  padding: 0.6rem;
  text-align: center;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-fast);
}

.ba-tab-btn.active {
  background-color: #ffffff;
  color: var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 767px) {
  .ba-tab-content {
    display: none;
  }
  .ba-tab-content.active {
    display: block;
  }
}

@media (min-width: 768px) {
  .ba-tab-content {
    display: block !important;
  }
}

/* Modern Interactive Tree View */
.tree-container {
  background-color: #0f172a;
  color: #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  border: 1px solid #1e293b;
  box-shadow: var(--shadow-lg);
}

.tree-folder {
  margin-bottom: 0.35rem;
}

.tree-folder-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  user-select: none;
  transition: var(--transition-fast);
  color: #ffffff;
  font-weight: 700;
}

.tree-folder-title:hover {
  background-color: #1e293b;
}

.tree-folder-title svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.tree-chevron {
  transition: transform 0.2s ease;
  width: 14px !important;
  height: 14px !important;
  color: #94a3b8;
}

.tree-folder.open > .tree-folder-title .tree-chevron {
  transform: rotate(90deg);
}

.tree-folder-contents {
  padding-left: 1.5rem;
  display: none;
  border-left: 1px dashed #334155;
  margin-left: 0.85rem;
}

.tree-folder.open > .tree-folder-contents {
  display: block;
}

.tree-file {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.5rem;
  color: #cbd5e1;
  font-size: 0.825rem;
}

.tree-file svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Compact Mobile Differentiation & Pricing */
@media (max-width: 640px) {
  .diff-grid {
    gap: 0.75rem;
  }
  .diff-grid .ba-card {
    padding: 0.85rem;
  }
  .buy-box {
    padding: 1rem !important;
  }
  .buy-box .hero-title {
    font-size: 1.35rem !important;
  }
  .buy-box .check-list {
    margin-bottom: 0.75rem !important;
  }
  .buy-box .check-list li {
    margin-bottom: 0.35rem !important;
    font-size: 0.8125rem !important;
  }
  .countdown-box {
    padding: 0.5rem 0.75rem !important;
    margin: 0.65rem 0 !important;
  }
  .timer-digits {
    font-size: 1.25rem !important;
  }
  .buy-box .btn {
    padding: 0.7rem !important;
    font-size: 0.95rem !important;
  }
}