/* ===================================================================
   eBookVault - Premium Modern Landing Page Stylesheet
   Design Language: Modern SaaS / Digital Products Marketplace
   =================================================================== */

:root {
  /* --- Color Palette --- */
  --bg-main: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-dark: #0b0f19;
  --bg-dark-card: #131b2e;
  --bg-dark-subtle: #1e293b;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --text-light-muted: #94a3b8;

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --secondary: #7c3aed;
  --accent-cyan: #06b6d4;
  --accent-rose: #f43f5e;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #ec4899 100%);
  --gradient-subtle: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
  --gradient-dark: linear-gradient(135deg, #0b0f19 0%, #172033 100%);
  --gradient-card-glow: linear-gradient(135deg, rgba(79, 70, 229, 0.08) 0%, rgba(124, 58, 237, 0.04) 100%);
  --gradient-emerald: linear-gradient(135deg, #10b981 0%, #059669 100%);

  /* --- Borders & Shadows --- */
  --border-light: rgba(226, 232, 240, 0.8);
  --border-card: rgba(203, 213, 225, 0.6);
  --border-focus: rgba(79, 70, 229, 0.4);
  --border-dark: rgba(255, 255, 255, 0.1);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-2xl: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
  --shadow-glow: 0 0 35px -5px rgba(99, 102, 241, 0.3);
  --shadow-glow-emerald: 0 0 30px -5px rgba(16, 185, 129, 0.3);

  /* --- Typography --- */
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-display: 'Outfit', 'Plus Jakarta Sans', sans-serif;

  /* --- Transitions & Radius --- */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* --- Scroll Progress Bar --- */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-primary);
  z-index: 9999;
  transition: width 0.1s ease-out;
}

/* --- Typography Helpers --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
}

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

ul {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

/* --- Layout Containers --- */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  max-width: 900px;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-dark {
  background: var(--gradient-dark);
  color: var(--text-light);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--text-light);
}

.section-dark p {
  color: var(--text-light-muted);
}

/* --- Text Gradients & Highlights --- */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-gradient-emerald {
  background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- Section Header --- */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.825rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
  margin-bottom: 1rem;
}

.section-badge.badge-bonus {
  background: rgba(245, 158, 11, 0.12);
  color: #b45309;
  border-color: rgba(245, 158, 11, 0.3);
}

.section-badge.badge-white {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-secondary);
}

/* --- Buttons & CTAs --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(79, 70, 229, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(79, 70, 229, 0.45);
  color: #ffffff;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.25), transparent);
  transition: 0.6s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-dark {
  background: #0f172a;
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-dark:hover {
  background: #1e293b;
  transform: translateY(-2px);
}

.btn-cta-large {
  padding: 1.15rem 2.25rem;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
  font-weight: 800;
  box-shadow: 0 10px 30px rgba(79, 70, 229, 0.45);
}

.btn-cta-large:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 40px rgba(79, 70, 229, 0.55);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* ===================================================================
   STICKY NAVBAR
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
  padding: 0.2rem 0;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-primary);
}

.brand-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.brand-name {
  letter-spacing: -0.03em;
}

.brand-name span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

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

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  background: var(--bg-tertiary);
  padding: 0.5rem;
}

.hamburger-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 360px;
  height: 100vh;
  background: #ffffff;
  z-index: 1050;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.15);
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1040;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mobile-nav-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.mobile-nav-links .nav-link {
  font-size: 1.1rem;
  font-weight: 600;
  padding: 0.5rem 0;
}

/* ===================================================================
   HERO SECTION
   =================================================================== */
.hero-section {
  position: relative;
  padding: 4.5rem 0 6rem 0;
  background: radial-gradient(circle at 85% 15%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 15% 75%, rgba(79, 70, 229, 0.08) 0%, transparent 45%),
              linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  background: #fef2f2;
  border: 1px solid #fee2e2;
  color: #dc2626;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  margin-bottom: 1.5rem;
  box-shadow: 0 2px 6px rgba(220, 38, 38, 0.08);
  animation: pulse-subtle 2.5s infinite;
}

@keyframes pulse-subtle {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.hero-title {
  font-size: 3.4rem;
  line-height: 1.12;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.18rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 2.25rem;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-trust-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-trust-item svg {
  color: var(--accent-emerald);
}

/* --- Hero 3D Graphic & Visual Dashboard --- */
.hero-visual-wrapper {
  position: relative;
  perspective: 1200px;
}

.hero-dashboard-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
  padding: 1.5rem;
  position: relative;
  z-index: 2;
  transform: rotateY(-4deg) rotateX(2deg);
  transition: transform var(--transition-slow);
}

.hero-dashboard-card:hover {
  transform: rotateY(0deg) rotateX(0deg);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.25rem;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.dashboard-title-pill {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

/* 3D Book Grid Mockup in Hero */
.hero-book-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.book-card-mockup {
  height: 160px;
  border-radius: var(--radius-md);
  padding: 1rem;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.book-card-mockup:hover {
  transform: translateY(-4px) scale(1.02);
}

.book-card-mockup::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 8px;
  height: 100%;
  background: rgba(0, 0, 0, 0.2);
  border-right: 1px solid rgba(255, 255, 255, 0.15);
}

.book-card-mockup::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 60%);
  pointer-events: none;
}

.book-tag {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(0, 0, 0, 0.25);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  width: fit-content;
  backdrop-filter: blur(4px);
}

.book-title-mini {
  font-size: 0.85rem;
  font-weight: 800;
  line-height: 1.2;
}

.book-bg-1 { background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%); }
.book-bg-2 { background: linear-gradient(135deg, #059669 0%, #064e3b 100%); }
.book-bg-3 { background: linear-gradient(135deg, #d97706 0%, #78350f 100%); }
.book-bg-4 { background: linear-gradient(135deg, #7c3aed 0%, #4c1d95 100%); }
.book-bg-5 { background: linear-gradient(135deg, #e11d48 0%, #881337 100%); }
.book-bg-6 { background: linear-gradient(135deg, #0284c7 0%, #075985 100%); }

.dashboard-footer-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: 0.825rem;
  font-weight: 600;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-emerald);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-emerald 1.8s infinite;
}

@keyframes pulse-emerald {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* Floating Badges on Hero */
.floating-badge {
  position: absolute;
  z-index: 3;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-lg);
  padding: 0.85rem 1.25rem;
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  backdrop-filter: blur(12px);
  animation: float 4s ease-in-out infinite alternate;
}

.floating-badge.badge-top-left {
  top: -20px;
  left: -25px;
}

.floating-badge.badge-bottom-right {
  bottom: -25px;
  right: -20px;
  animation-delay: -2s;
}

.badge-icon-box {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.badge-icon-box.indigo { background: var(--primary); }
.badge-icon-box.emerald { background: var(--accent-emerald); }

.badge-text-group .badge-number {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-primary);
}

.badge-text-group .badge-subtext {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

@keyframes float {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-12px); }
}

/* ===================================================================
   SOCIAL PROOF / STATS CARDS
   =================================================================== */
.stats-section {
  padding: 3rem 0;
  background: #ffffff;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-4px);
  background: #ffffff;
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.stat-number {
  font-size: 2.35rem;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.stat-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

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

/* ===================================================================
   WHAT'S INSIDE / CATEGORIES SHOWCASE
   =================================================================== */
.categories-filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.filter-pill {
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  background: #ffffff;
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.filter-pill:hover,
.filter-pill.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

.category-search-box {
  max-width: 480px;
  margin: 0 auto 2.5rem auto;
  position: relative;
}

.category-search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-card);
  font-size: 0.95rem;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: all var(--transition-fast);
}

.category-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

.search-icon-inside {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.category-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-card);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
  box-shadow: var(--shadow-sm);
}

.category-card:hover {
  transform: translateY(-6px);
  border-color: rgba(79, 70, 229, 0.4);
  box-shadow: var(--shadow-xl), 0 0 20px rgba(79, 70, 229, 0.08);
}

.category-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.category-icon-wrapper {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.category-card:hover .category-icon-wrapper {
  background: var(--gradient-primary);
  color: #ffffff;
  transform: scale(1.05);
}

.category-count-badge {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.category-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.category-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.category-explore-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
  transition: gap var(--transition-fast);
}

.category-card:hover .category-explore-btn {
  gap: 0.65rem;
  color: var(--secondary);
}

/* ===================================================================
   FEATURED COLLECTION / DIGITAL LIBRARY VAULT EXPLORER
   =================================================================== */
.digital-vault-section {
  background: #0f172a;
  color: #ffffff;
}

.vault-container-box {
  background: #131d33;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
}

.vault-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.25rem 1.75rem;
  background: #0b1120;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.vault-toolbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.vault-title-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: #ffffff;
}

.vault-stats-counter {
  font-size: 0.8rem;
  color: var(--text-light-muted);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.vault-toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.vault-search-input {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 0.45rem 0.85rem;
  color: #ffffff;
  font-size: 0.85rem;
  outline: none;
  min-width: 220px;
}

.vault-search-input:focus {
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.1);
}

.vault-view-toggle {
  display: flex;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 2px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.view-toggle-btn {
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
  color: var(--text-light-muted);
  font-size: 0.85rem;
}

.view-toggle-btn.active {
  background: var(--primary);
  color: #ffffff;
}

.vault-folders-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  padding: 1.75rem;
  max-height: 580px;
  overflow-y: auto;
}

/* Custom Scrollbar for Vault */
.vault-folders-grid::-webkit-scrollbar {
  width: 6px;
}
.vault-folders-grid::-webkit-scrollbar-track {
  background: #0b1120;
}
.vault-folders-grid::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 3px;
}

.folder-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.75rem;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.folder-card:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(99, 102, 241, 0.5);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.folder-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.folder-icon {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-sm);
  background: rgba(79, 70, 229, 0.2);
  color: #a5b4fc;
  display: flex;
  align-items: center;
  justify-content: center;
}

.folder-badge-pill {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-light-muted);
}

.folder-badge-pill.vault-highlight {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.folder-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.3;
}

.folder-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.775rem;
  color: var(--text-light-muted);
}

/* Vault List View Mode */
.vault-folders-grid.list-view {
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

.vault-folders-grid.list-view .folder-card {
  flex-direction: row;
  align-items: center;
  padding: 0.75rem 1.25rem;
}

/* ===================================================================
   BONUS SECTION (6 Bonuses)
   =================================================================== */
.bonus-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.bonus-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-card);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.bonus-card:hover {
  transform: translateY(-6px);
  border-color: #f59e0b;
  box-shadow: var(--shadow-xl), 0 0 25px rgba(245, 158, 11, 0.12);
}

.bonus-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #f59e0b, #ec4899);
}

.bonus-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.bonus-number-pill {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: #b45309;
  background: #fef3c7;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
}

.bonus-tag-label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.bonus-title {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.bonus-tagline {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 0.85rem;
}

.bonus-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.bonus-banner-highlight {
  background: linear-gradient(135deg, #fef3c7 0%, #ffedd5 100%);
  border: 1px solid #fde68a;
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.bonus-banner-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bonus-banner-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #92400e;
}

.bonus-banner-subtitle {
  font-size: 0.875rem;
  color: #b45309;
}

/* ===================================================================
   VALUE & PRICING SECTION
   =================================================================== */
.pricing-section {
  position: relative;
  background: radial-gradient(circle at 50% 10%, rgba(79, 70, 229, 0.05) 0%, transparent 60%), #ffffff;
}

.pricing-comparison-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: stretch;
  max-width: 1080px;
  margin: 0 auto;
}

.comparison-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-card);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.comparison-card-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.comparison-price-large {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.comparison-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin: 1.75rem 0;
}

.comparison-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.925rem;
  color: var(--text-secondary);
}

.comparison-item.negative svg {
  color: var(--accent-rose);
}

/* Featured Offer Pricing Card */
.offer-pricing-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 2px solid var(--primary);
  padding: 2.75rem 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-2xl), 0 0 35px rgba(79, 70, 229, 0.18);
  position: relative;
  overflow: hidden;
}

.offer-ribbon {
  position: absolute;
  top: 1.25rem;
  right: -2rem;
  background: var(--gradient-primary);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 3rem;
  transform: rotate(45deg);
  box-shadow: var(--shadow-sm);
}

.offer-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.825rem;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  width: fit-content;
}

.offer-price-row {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin-bottom: 0.5rem;
}

.current-price {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.old-price {
  font-size: 1.45rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.discount-pill {
  font-size: 0.85rem;
  font-weight: 800;
  background: #dcfce7;
  color: #166534;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.offer-benefits-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin: 1.75rem 0;
}

.offer-benefit-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.offer-benefit-item svg {
  color: var(--accent-emerald);
  flex-shrink: 0;
}

.offer-cta-subtext {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.85rem;
}

/* ===================================================================
   HOW IT WORKS (3 STEPS)
   =================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.step-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-card);
  padding: 2.25rem 1.75rem;
  text-align: center;
  position: relative;
  transition: all var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.step-number-circle {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #ffffff;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}

.step-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.step-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
}

/* ===================================================================
   WHY CHOOSE THIS BUNDLE (6 BENEFITS)
   =================================================================== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.benefit-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-card);
  padding: 2rem 1.75rem;
  transition: all var(--transition-normal);
}

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

.benefit-icon-box {
  width: 3.25rem;
  height: 3.25rem;
  border-radius: var(--radius-md);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.benefit-title {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.benefit-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ===================================================================
   TESTIMONIAL / READER FEEDBACK SECTION
   =================================================================== */
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.feedback-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-card);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.feedback-quote {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
  font-style: italic;
}

.feedback-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
}

.feedback-role {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.feedback-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

/* ===================================================================
   FAQ ACCORDION SECTION
   =================================================================== */
.faq-accordion-container {
  max-width: 850px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  background: none;
}

.faq-question-btn:hover {
  color: var(--primary);
}

.faq-toggle-icon {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  background: var(--primary-light);
  color: var(--primary);
}

.faq-answer-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0 1.5rem;
}

.faq-item.active .faq-answer-content {
  padding: 0 1.5rem 1.35rem 1.5rem;
}

.faq-answer-content p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ===================================================================
   FINAL CALL TO ACTION BANNER
   =================================================================== */
.final-cta-section {
  padding: 6rem 0;
  background: linear-gradient(135deg, #0b0f19 0%, #1e1b4b 50%, #0f172a 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.final-cta-box {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.final-cta-title {
  font-size: 3.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.final-cta-subtitle {
  font-size: 1.2rem;
  color: var(--text-light-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.final-cta-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 1.75rem;
  font-size: 0.85rem;
  color: var(--text-light-muted);
}

/* ===================================================================
   FOOTER & LEGAL MODALS
   =================================================================== */
.footer {
  background: #0b0f19;
  color: var(--text-light-muted);
  padding: 4.5rem 0 2.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: var(--text-light-muted);
  line-height: 1.6;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links-list a {
  font-size: 0.875rem;
  color: var(--text-light-muted);
  transition: color var(--transition-fast);
}

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

.footer-disclaimer-box {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 2rem;
  font-size: 0.785rem;
  line-height: 1.6;
  color: #64748b;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.85rem;
}

/* Floating Back-to-Top Button */
.back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: #ffffff;
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 990;
  opacity: 0;
  pointer-events: none;
  transform: translateY(15px);
  transition: all var(--transition-fast);
}

.back-to-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-3px);
}

/* ===================================================================
   MODAL WINDOWS (Folder Preview & Policies)
   =================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  padding: 1.5rem;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content-card {
  background: #ffffff;
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.25rem;
  position: relative;
  box-shadow: var(--shadow-2xl);
  transform: scale(0.95);
  transition: transform var(--transition-fast);
}

.modal-overlay.open .modal-content-card {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.modal-close-btn:hover {
  background: #fee2e2;
  color: #dc2626;
}

.modal-header-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.modal-body-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* ===================================================================
   RESPONSIVE BREAKPOINTS (Mobile-First Optimization)
   =================================================================== */
@media (max-width: 1100px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual-wrapper {
    max-width: 600px;
    margin: 0 auto;
  }
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .vault-folders-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .bonus-grid,
  .benefits-grid,
  .feedback-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-actions .btn-sm {
    display: none;
  }
  .hamburger-btn {
    display: flex;
  }
  .hero-title {
    font-size: 2.4rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .vault-folders-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-comparison-grid {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .bonus-grid,
  .benefits-grid,
  .feedback-grid {
    grid-template-columns: 1fr;
  }
  .final-cta-title {
    font-size: 2.25rem;
  }
  .current-price {
    font-size: 2.85rem;
  }
  .floating-badge {
    display: none;
  }
}

@media (max-width: 520px) {
  .section {
    padding: 3.5rem 0;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-group .btn {
    width: 100%;
  }
  .categories-grid,
  .vault-folders-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-book-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}