/* ==========================================================================
   SmartPDFly - Modern Design System & Global Styles
   SEO & Performance Optimized CSS
   ========================================================================== */

:root {
  /* Color Palette - Light Mode Default */
  --bg-primary: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-hover: #F1F5F9;
  --bg-elevated: #FFFFFF;
  --border-subtle: #E2E8F0;
  --border-hover: #CBD5E1;
  --border-focus: #EF4444;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #FFFFFF;

  /* Brand Accents */
  --brand-primary: #EF4444;
  --brand-primary-hover: #DC2626;
  --brand-primary-light: #FEE2E2;
  --brand-gradient: linear-gradient(135deg, #FF4D4D 0%, #E52E2E 100%);
  --brand-glow: rgba(239, 68, 68, 0.25);

  /* Functional Accents */
  --accent-blue: #3B82F6;
  --accent-green: #10B981;
  --accent-purple: #8B5CF6;
  --accent-amber: #F59E0B;
  --accent-cyan: #06B6D4;

  /* Shadows */
  --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(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-glow: 0 0 25px var(--brand-glow);

  /* Layout */
  --container-max: 1240px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #090D16;
  --bg-surface: #111726;
  --bg-surface-hover: #1A2236;
  --bg-elevated: #161F33;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #090D16;

  --brand-primary-light: rgba(239, 68, 68, 0.15);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 24px 38px rgba(0, 0, 0, 0.6);
}

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

html {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

button, input, select, textarea {
  font: inherit;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

[data-theme="dark"] .site-header {
  background-color: rgba(17, 23, 38, 0.85);
}

.header-container {
  max-width: var(--container-max);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--brand-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 12px var(--brand-glow);
}

.brand-logo .accent {
  color: var(--brand-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-link {
  padding: 8px 14px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-gradient);
  color: white;
  box-shadow: 0 4px 14px var(--brand-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

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

.mobile-menu-btn {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  padding: 0;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.mobile-menu-btn:hover, .mobile-menu-btn:active {
  border-color: var(--border-hover);
  background: var(--bg-surface-hover);
  color: var(--brand-primary);
}

.mobile-menu-btn svg {
  width: 22px;
  height: 22px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 56px 24px 32px;
  text-align: center;
  background: radial-gradient(circle at 50% 0%, rgba(239, 68, 68, 0.08) 0%, transparent 60%);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--brand-primary);
  background: var(--brand-primary-light);
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
  max-width: 820px;
  margin-inline: auto;
}

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

.hero-description {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 32px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-item svg {
  color: var(--accent-green);
}

/* ==========================================================================
   Search & Filter Bar
   ========================================================================== */
.search-filter-wrapper {
  max-width: 580px;
  margin: 0 auto 48px;
  position: relative;
}

.search-input-box {
  width: 100%;
  padding: 14px 20px 14px 46px;
  font-size: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.search-input-box:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px var(--brand-primary-light);
}

.search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

/* ==========================================================================
   Tools Grid & Cards
   ========================================================================== */
.tools-section {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px 64px;
  width: 100%;
}

.category-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover, .tab-btn.active {
  background: var(--brand-primary);
  color: white;
  border-color: var(--brand-primary);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.tool-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--brand-primary));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

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

.tool-card:hover::before {
  opacity: 1;
}

.tool-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: var(--icon-bg, var(--brand-primary-light));
  color: var(--icon-color, var(--brand-primary));
  transition: transform var(--transition-fast);
}

.tool-card:hover .tool-icon-wrap {
  transform: scale(1.08);
}

.tool-title {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.tool-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.tool-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--card-accent, var(--brand-primary));
}

.tool-arrow {
  opacity: 0;
  transform: translateX(-4px);
  transition: all var(--transition-fast);
}

.tool-card:hover .tool-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* Specific Card Theme Accents */
.theme-red { --card-accent: #EF4444; --icon-bg: rgba(239, 68, 68, 0.12); --icon-color: #EF4444; }
.theme-blue { --card-accent: #3B82F6; --icon-bg: rgba(59, 130, 246, 0.12); --icon-color: #3B82F6; }
.theme-green { --card-accent: #10B981; --icon-bg: rgba(16, 185, 129, 0.12); --icon-color: #10B981; }
.theme-purple { --card-accent: #8B5CF6; --icon-bg: rgba(139, 92, 246, 0.12); --icon-color: #8B5CF6; }
.theme-amber { --card-accent: #F59E0B; --icon-bg: rgba(245, 158, 11, 0.12); --icon-color: #F59E0B; }
.theme-cyan { --card-accent: #06B6D4; --icon-bg: rgba(6, 182, 212, 0.12); --icon-color: #06B6D4; }

/* ==========================================================================
   Header Dropdowns & iLovePDF-Style Mega Menus
   ========================================================================== */
.nav-item-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-dropdown-trigger {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px 12px;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-dropdown-trigger:hover,
.nav-item-dropdown:hover .nav-dropdown-trigger {
  color: var(--text-primary);
  background-color: var(--bg-surface-hover);
}

.nav-dropdown-trigger svg {
  transition: transform 0.2s ease;
}

.nav-item-dropdown:hover .nav-dropdown-trigger svg,
.nav-item-dropdown.active .nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.16), 0 0 0 1px rgba(0, 0, 0, 0.04);
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1500;
}

.nav-item-dropdown:hover > .dropdown-menu,
.nav-item-dropdown.active > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Convert PDF Dropdown (2 Columns) */
.dropdown-convert {
  width: 540px;
  left: -80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* All PDF Tools Mega Menu (6 Columns) */
.dropdown-mega-tools {
  width: 1060px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  max-width: 96vw;
}

.nav-item-dropdown:hover > .dropdown-mega-tools,
.nav-item-dropdown.active > .dropdown-mega-tools {
  transform: translateX(-50%) translateY(0);
}

/* 9-Dots Apps Switcher Dropdown */
.dropdown-apps {
  width: 600px;
  right: 0;
  left: auto;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 22px;
}

.mega-col-title {
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 6px;
}

.mega-link-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mega-link-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.88rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.mega-link-item:hover {
  background: var(--bg-surface-hover);
  color: var(--brand-primary);
  transform: translateX(4px);
}

.mega-icon-badge {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* 9-Dots Apps Button in Nav Actions */
.apps-grid-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.apps-grid-btn:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
  background: var(--bg-surface-hover);
}

/* ==========================================================================
   Monetization Ad Slots (Google AdSense Production & Mock Ready)
   ========================================================================== */
.ad-slot-wrapper {
  margin: 28px auto;
  max-width: var(--container-max);
  padding: 0 20px;
}

.ad-slot-container {
  background: var(--bg-surface);
  border: 1px dashed var(--border-hover);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 105px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.ad-label {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ad-label::before, .ad-label::after {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background: var(--border-subtle);
}

.ad-banner-mock {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 728px;
  background: var(--bg-surface-hover);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  gap: 16px;
  border: 1px solid var(--border-subtle);
}

.ad-mock-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.ad-mock-text span {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* High-CTR Post-Action Download Ad Unit */
.ad-download-container {
  margin-top: 24px;
  width: 100%;
  max-width: 640px;
  background: var(--bg-surface-hover);
  border: 1px dashed var(--brand-glow);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Real AdSense tag support */
ins.adsbygoogle {
  background: transparent !important;
}

/* ==========================================================================
   SEO Content & Feature Sections
   ========================================================================== */
.seo-section {
  max-width: var(--container-max);
  margin: 48px auto;
  padding: 0 24px;
}

.seo-card-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  text-align: center;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
  margin-top: 36px;
}

.feature-box {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
}

.feature-box h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 12px 0 8px;
}

.feature-box p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Steps / How To Section */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin: 40px 0;
}

.step-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  position: relative;
}

.step-number {
  width: 44px;
  height: 44px;
  background: var(--brand-gradient);
  color: white;
  font-weight: 800;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px var(--brand-glow);
}

.step-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-list {
  max-width: 780px;
  margin: 32px auto 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  text-align: left;
}

.faq-icon {
  transition: transform var(--transition-fast);
  color: var(--text-muted);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease, padding 300ms ease;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 64px 24px 32px;
}

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  margin: 16px 0 24px;
  max-width: 320px;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--brand-primary);
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Modals (Pro Upgrade & API)
   ========================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

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

.modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  padding: 36px;
  position: relative;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-close-btn:hover {
  color: var(--text-primary);
}

.pricing-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 28px 0;
}

.pricing-card {
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pricing-card:hover, .pricing-card.selected {
  border-color: var(--brand-primary);
  background: var(--brand-primary-light);
}

.pricing-card .price {
  font-size: 2rem;
  font-weight: 800;
  margin: 10px 0;
  color: var(--text-primary);
}

/* ==========================================================================
   Mobile Navigation Drawer & Overlay
   ========================================================================== */
.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 86vw);
  background: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  box-shadow: -10px 0 35px rgba(0, 0, 0, 0.35);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-drawer.active {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  position: sticky;
  top: 0;
  z-index: 2;
}

.mobile-drawer-close {
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all var(--transition-fast);
}

.mobile-drawer-close:hover {
  color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.mobile-drawer-body {
  padding: 16px 20px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex-grow: 1;
}

.mobile-drawer-pro-card {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(245, 158, 11, 0.14) 100%);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-drawer-search {
  position: relative;
  width: 100%;
}

.mobile-drawer-search input {
  width: 100%;
  padding: 11px 14px 11px 36px;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 16px; /* Prevents auto zoom on mobile */
  font-family: inherit;
}

.mobile-drawer-search input:focus {
  outline: none;
  border-color: var(--brand-primary);
}

.mobile-drawer-search svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.mobile-section-heading {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 800;
  color: var(--text-muted);
  margin-top: 10px;
  margin-bottom: 6px;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.mobile-nav-item a,
.mobile-nav-accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.mobile-nav-item a:hover,
.mobile-nav-accordion-trigger:hover {
  background: var(--bg-surface-hover);
  color: var(--brand-primary);
}

.mobile-nav-item a .icon-badge,
.mobile-nav-accordion-trigger .icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  margin-right: 10px;
  font-size: 0.95rem;
}

.mobile-accordion-content {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding-left: 20px;
  margin-top: 4px;
}

.mobile-accordion-content.active {
  display: flex;
}

.mobile-drawer-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ==========================================================================
   Responsive Breakpoints & Mobile Optimization
   ========================================================================== */

/* Tablet & Smaller Desktops (Max 960px) */
@media (max-width: 960px) {
  .header-container {
    padding: 0 18px;
  }
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .trigger-cmd-palette .command-kbd-badge {
    display: none;
  }
  .footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
  .pricing-cards {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .hero-section {
    padding: 44px 20px 24px;
  }
  .hero-title {
    font-size: clamp(2rem, 5vw, 2.6rem);
  }
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

/* Tablets / Large Phones (Max 768px) */
@media (max-width: 768px) {
  .category-tabs {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 8px;
    padding: 4px 16px;
    margin: 0 -16px 28px;
    justify-content: flex-start;
  }
  .category-tabs::-webkit-scrollbar {
    display: none;
  }
  .tab-btn {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 8px 16px;
    font-size: 0.84rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .seo-card-box {
    padding: 28px 18px;
  }
}

/* Smartphones / Small Devices (Max 640px) */
@media (max-width: 640px) {
  .header-container {
    padding: 0 14px;
    height: 60px;
  }
  .brand-logo {
    font-size: 1.15rem;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
  }
  .nav-actions {
    gap: 8px;
  }
  .nav-actions .btn.trigger-pro-modal {
    padding: 6px 12px;
    font-size: 0.82rem;
  }
  .trigger-cmd-palette {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
  .theme-toggle-btn {
    width: 36px;
    height: 36px;
  }
  .apps-grid-btn {
    width: 36px;
    height: 36px;
  }
  .mobile-menu-btn {
    width: 36px;
    height: 36px;
  }

  /* Hero */
  .hero-section {
    padding: 32px 14px 20px;
  }
  .hero-badge {
    font-size: 0.74rem;
    padding: 4px 10px;
    max-width: 100%;
  }
  .hero-title {
    font-size: clamp(1.65rem, 6.5vw, 2.2rem);
    line-height: 1.2;
    margin-bottom: 12px;
  }
  .hero-description {
    font-size: 0.92rem;
    line-height: 1.5;
    margin-bottom: 20px;
  }
  .hero-stats {
    gap: 8px;
  }
  .stat-item {
    font-size: 0.76rem;
    padding: 5px 10px;
  }

  /* Search Bar */
  .search-box {
    padding: 0 14px 24px;
  }
  .search-input-box input {
    font-size: 16px; /* Prevents auto zoom on iOS */
    padding: 13px 16px 13px 44px;
  }
  .search-icon {
    left: 14px;
  }

  /* Tools Section */
  .tools-section {
    padding: 0 14px 44px;
  }
  .tools-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .tool-card {
    padding: 16px;
  }
  .tool-icon-wrap {
    width: 44px;
    height: 44px;
    margin-bottom: 12px;
  }
  .tool-title {
    font-size: 1.1rem;
  }
  .tool-desc {
    font-size: 0.84rem;
    margin-bottom: 12px;
  }

  /* Pricing */
  .pricing-section {
    padding: 40px 14px;
  }
  .pricing-card {
    padding: 20px 16px;
  }
  .pricing-card .price {
    font-size: 1.8rem;
  }

  /* Modals */
  .modal-box,
  .checkout-modal-box,
  .account-modal-box {
    width: calc(100vw - 24px);
    max-width: 440px;
    max-height: 90vh;
    padding: 22px 16px;
    margin: 12px;
  }
  .command-palette-card {
    width: calc(100vw - 20px);
    max-height: 85vh;
    margin: 16px auto;
    padding: 16px 12px;
  }

  /* Footer */
  .footer-container {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 36px 14px 20px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}

/* ==========================================================================
   Checkout Modal & Subscription UI
   ========================================================================== */
.checkout-modal-box {
  max-width: 520px;
}

.checkout-plan-selector {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

.checkout-plan-card {
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  cursor: pointer;
  background: var(--bg-primary);
  transition: all var(--transition-fast);
}

.checkout-plan-card:hover, .checkout-plan-card.selected {
  border-color: var(--brand-primary);
  background: var(--brand-primary-light);
}

.checkout-plan-price {
  font-size: 1.35rem;
  font-weight: 800;
  margin-top: 4px;
  color: var(--text-primary);
}

.payment-tabs {
  display: flex;
  gap: 8px;
  background: var(--bg-surface-hover);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.pay-tab {
  flex: 1;
  padding: 8px;
  border-radius: 8px;
  border: none;
  background: transparent;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pay-tab.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.checkout-field-group {
  margin-bottom: 12px;
}

.command-palette-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 3000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 15vh 20px 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

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

.command-palette-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  transform: scale(0.96) translateY(-10px);
  transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

.command-palette-backdrop.active .command-palette-box {
  transform: scale(1) translateY(0);
}

.command-search-header {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  gap: 12px;
}

.command-search-input {
  width: 100%;
  border: none;
  background: transparent;
  font-size: 1.15rem;
  color: var(--text-primary);
  outline: none;
}

.command-kbd-badge {
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: inherit;
  font-weight: 700;
}

.command-results-list {
  max-height: 380px;
  overflow-y: auto;
  padding: 10px;
  list-style: none;
}

.command-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.command-item:hover, .command-item.selected {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
}

.command-item-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--bg-surface-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.command-item:hover .command-item-icon, .command-item.selected .command-item-icon {
  background: var(--brand-primary);
  color: white;
}

.command-item-details {
  flex-grow: 1;
}

.command-item-title {
  font-weight: 700;
  font-size: 0.95rem;
}

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

.command-palette-footer {
  padding: 10px 20px;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Account Management, VIP Status, & Login Modals
   ========================================================================== */
.btn-account-badge {
  background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%) !important;
  color: #FFFFFF !important;
  border: 1px solid #D97706 !important;
  font-weight: 700 !important;
  padding: 6px 14px !important;
  font-size: 0.85rem !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  box-shadow: 0 2px 10px rgba(245, 158, 11, 0.35) !important;
  border-radius: var(--radius-full) !important;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-account-badge:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.5) !important;
}

.account-modal-box {
  max-width: 500px;
  width: 92%;
  padding: 32px;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-xl);
  position: relative;
}

.account-tabs-header {
  display: flex;
  background: var(--bg-surface-hover);
  border-radius: var(--radius-md);
  padding: 4px;
  margin: 18px 0;
  gap: 4px;
}

.account-tab-btn {
  flex: 1;
  padding: 8px 12px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.account-tab-btn.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.account-form-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.options-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-align: left;
}

.options-input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-subtle);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all var(--transition-fast);
  display: block;
}

.options-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.options-input::placeholder {
  color: var(--text-muted);
}

.account-status-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 16px 0;
}

.account-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border-subtle);
}

.account-status-row:last-child {
  border-bottom: none;
}

.account-key-pill {
  font-family: monospace;
  background: var(--bg-surface-hover);
  padding: 3px 8px;
  border-radius: 6px;
  font-weight: 700;
  color: var(--brand-primary);
  border: 1px solid var(--border-subtle);
}

/* ==========================================================================
   Modern Sign In & Create Account Modal Redesign
   ========================================================================== */
.auth-segment-switch {
  display: flex;
  background: var(--bg-surface-hover);
  border-radius: var(--radius-full);
  padding: 4px;
  margin: 18px 0 20px 0;
  border: 1.5px solid var(--border-subtle);
  position: relative;
  gap: 4px;
}

.auth-segment-btn {
  flex: 1;
  padding: 10px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.auth-segment-btn:hover {
  color: var(--text-primary);
}

.auth-segment-btn.active {
  background: var(--bg-surface);
  color: var(--brand-primary);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .auth-segment-btn.active {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.auth-field-group {
  margin-bottom: 12px;
  text-align: left;
}

.password-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.password-input-wrap .options-input {
  padding-right: 42px;
}

.password-toggle-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.password-toggle-btn:hover {
  color: var(--text-primary);
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 16px 0;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-subtle);
}

.auth-divider:not(:empty)::before {
  margin-right: 12px;
}

.auth-divider:not(:empty)::after {
  margin-left: 12px;
}

.license-accordion-card {
  border: 1.5px dashed var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-surface-hover);
  overflow: hidden;
  margin-top: 14px;
  transition: all var(--transition-fast);
}

.license-accordion-card.open {
  border-color: rgba(37, 99, 235, 0.4);
  background: var(--bg-surface);
}

.license-accordion-trigger {
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.license-accordion-trigger:hover {
  color: var(--brand-primary);
}

.license-accordion-body {
  padding: 12px 14px 14px 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-surface);
}

.register-perks-list {
  background: rgba(37, 99, 235, 0.04);
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  margin: 12px 0 16px 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 0.83rem;
  color: var(--text-secondary);
  text-align: left;
}

.register-perk-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.register-perk-item svg {
  color: #10B981;
  flex-shrink: 0;
}

.auth-footer-switch {
  text-align: center;
  margin-top: 16px;
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.auth-footer-switch button {
  background: none;
  border: none;
  color: var(--brand-primary);
  font-weight: 700;
  cursor: pointer;
  padding: 0 4px;
  font-size: inherit;
  text-decoration: underline;
}

.auth-footer-switch button:hover {
  opacity: 0.85;
}





/* Clean Production: Hide all mock demo ad banners */
.ad-banner-mock, .ad-slot-wrapper, .ad-slot-container { display: none !important; }