/* ============================================
   🎨 GLASS MORPHISM + DARK NEON DESIGN SYSTEM
   Shared across all projects
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  /* Neon Accent Colors */
  --neon-cyan: #00f5ff;
  --neon-pink: #ff00e5;
  --neon-purple: #8b5cf6;
  --neon-green: #00ff88;
  --neon-yellow: #ffe600;
  --neon-orange: #ff6b00;
  --neon-red: #ff0044;
  
  /* Glass Colors */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-hover: rgba(255, 255, 255, 0.12);
  --glass-strong: rgba(255, 255, 255, 0.1);
  
  /* Neon Glow Shadows */
  --glow-cyan: 0 0 10px rgba(0, 245, 255, 0.3), 0 0 20px rgba(0, 245, 255, 0.1);
  --glow-pink: 0 0 10px rgba(255, 0, 229, 0.3), 0 0 20px rgba(255, 0, 229, 0.1);
  --glow-purple: 0 0 10px rgba(139, 92, 246, 0.3), 0 0 20px rgba(139, 92, 246, 0.1);
  --glow-green: 0 0 10px rgba(0, 255, 136, 0.3), 0 0 20px rgba(0, 255, 136, 0.1);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Font */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
}

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

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

body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, #0a0a0f 0%, #0f0a1a 25%, #0a0f1a 50%, #100a0f 75%, #0a0a0f 100%);
  background-attachment: fixed;
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Animated background particles effect */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 245, 255, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(255, 0, 229, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Animated grid overlay */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ---------- Glass Morphism Components ---------- */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  transition: all var(--transition-normal);
}

.glass:hover {
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.glass-strong {
  background: var(--glass-strong);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ---------- Neon Text Effects ---------- */
.neon-text-cyan {
  color: var(--neon-cyan);
  text-shadow: 0 0 7px var(--neon-cyan), 0 0 20px rgba(0, 245, 255, 0.3);
}

.neon-text-pink {
  color: var(--neon-pink);
  text-shadow: 0 0 7px var(--neon-pink), 0 0 20px rgba(255, 0, 229, 0.3);
}

.neon-text-purple {
  color: var(--neon-purple);
  text-shadow: 0 0 7px var(--neon-purple), 0 0 20px rgba(139, 92, 246, 0.3);
}

.neon-text-green {
  color: var(--neon-green);
  text-shadow: 0 0 7px var(--neon-green), 0 0 20px rgba(0, 255, 136, 0.3);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

/* Neon Primary Button */
.btn-neon-cyan {
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.2), rgba(0, 245, 255, 0.05));
  border: 1px solid rgba(0, 245, 255, 0.3);
  color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 245, 255, 0.1);
}

.btn-neon-cyan:hover {
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.3), rgba(0, 245, 255, 0.1));
  box-shadow: var(--glow-cyan), 0 0 30px rgba(0, 245, 255, 0.1);
  transform: translateY(-2px);
  border-color: var(--neon-cyan);
}

.btn-neon-pink {
  background: linear-gradient(135deg, rgba(255, 0, 229, 0.2), rgba(255, 0, 229, 0.05));
  border: 1px solid rgba(255, 0, 229, 0.3);
  color: var(--neon-pink);
  box-shadow: 0 0 15px rgba(255, 0, 229, 0.1);
}

.btn-neon-pink:hover {
  background: linear-gradient(135deg, rgba(255, 0, 229, 0.3), rgba(255, 0, 229, 0.1));
  box-shadow: var(--glow-pink), 0 0 30px rgba(255, 0, 229, 0.1);
  transform: translateY(-2px);
  border-color: var(--neon-pink);
}

.btn-neon-purple {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(139, 92, 246, 0.05));
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--neon-purple);
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.1);
}

.btn-neon-purple:hover {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.3), rgba(139, 92, 246, 0.1));
  box-shadow: var(--glow-purple), 0 0 30px rgba(139, 92, 246, 0.1);
  transform: translateY(-2px);
  border-color: var(--neon-purple);
}

.btn-neon-green {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.2), rgba(0, 255, 136, 0.05));
  border: 1px solid rgba(0, 255, 136, 0.3);
  color: var(--neon-green);
  box-shadow: 0 0 15px rgba(0, 255, 136, 0.1);
}

.btn-neon-green:hover {
  background: linear-gradient(135deg, rgba(0, 255, 136, 0.3), rgba(0, 255, 136, 0.1));
  box-shadow: var(--glow-green), 0 0 30px rgba(0, 255, 136, 0.1);
  transform: translateY(-2px);
  border-color: var(--neon-green);
}

/* Glass Button (subtle) */
.btn-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: var(--glass-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
}

.btn-sm {
  padding: 6px 16px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
}

/* ---------- Form Elements ---------- */
.glass-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  width: 100%;
  transition: all var(--transition-normal);
  outline: none;
}

.glass-input:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
  background: rgba(255, 255, 255, 0.08);
}

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

.glass-input:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

textarea.glass-input {
  resize: vertical;
  min-height: 100px;
  line-height: 1.5;
}

select.glass-input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='rgba(255,255,255,0.5)' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.glass-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ---------- Cards ---------- */
.card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--glass-hover);
  transform: translateY(-2px);
}

.card-accent-cyan {
  border-color: rgba(0, 245, 255, 0.2);
}

.card-accent-cyan:hover {
  border-color: rgba(0, 245, 255, 0.4);
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.05);
}

.card-accent-pink {
  border-color: rgba(255, 0, 229, 0.2);
}

.card-accent-pink:hover {
  border-color: rgba(255, 0, 229, 0.4);
  box-shadow: 0 0 20px rgba(255, 0, 229, 0.05);
}

/* ---------- Navigation / Header ---------- */
.header {
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-md) var(--space-xl);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.2rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
}

.header-logo .logo-accent {
  color: var(--neon-cyan);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.header-nav a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

/* ---------- Tool Switcher (cross-tool navigation) ---------- */
.tool-switcher {
  background: rgba(10, 10, 15, 0.6);
  backdrop-filter: blur(12px) saturate(1.3);
  -webkit-backdrop-filter: blur(12px) saturate(1.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  padding: 6px var(--space-xl);
  position: sticky;
  top: 60px;
  z-index: 99;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tool-switcher-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 4px;
  align-items: center;
}

.tool-switcher a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.tool-switcher a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.08);
}

.tool-switcher a.active {
  color: var(--neon-cyan);
  background: rgba(0, 245, 255, 0.08);
  border-color: rgba(0, 245, 255, 0.2);
  font-weight: 600;
}

.tool-switcher a .ts-icon {
  font-size: 0.85rem;
}

.tool-switcher .ts-divider {
  width: 1px;
  height: 16px;
  background: rgba(255, 255, 255, 0.06);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .tool-switcher {
    padding: 4px var(--space-md);
    top: 52px;
  }
  .tool-switcher a {
    font-size: 0.65rem;
    padding: 3px 6px;
  }
  .tool-switcher a .ts-icon {
    font-size: 0.75rem;
  }
}

/* ---------- Containers ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-xl);
  position: relative;
  z-index: 1;
}

.container-sm {
  max-width: 800px;
}

.container-lg {
  max-width: 1400px;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ---------- Flex Utilities ---------- */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.2rem; }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

.mono {
  font-family: var(--font-mono);
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-cyan {
  background: rgba(0, 245, 255, 0.1);
  color: var(--neon-cyan);
  border: 1px solid rgba(0, 245, 255, 0.2);
}

.badge-pink {
  background: rgba(255, 0, 229, 0.1);
  color: var(--neon-pink);
  border: 1px solid rgba(255, 0, 229, 0.2);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--neon-purple);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

/* ---------- Tool Cards (for homepage) ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
}

.tool-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.tool-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
}

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

.tool-card .tool-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.tool-card .tool-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.tool-card .tool-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---------- Status & Messages ---------- */
.success-message {
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid rgba(0, 255, 136, 0.2);
  color: var(--neon-green);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.error-message {
  background: rgba(255, 0, 68, 0.1);
  border: 1px solid rgba(255, 0, 68, 0.2);
  color: var(--neon-red);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

.info-message {
  background: rgba(0, 245, 255, 0.1);
  border: 1px solid rgba(0, 245, 255, 0.2);
  color: var(--neon-cyan);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
}

/* ---------- Carbon Ads (non-intrusive ad unit) ---------- */
#carbonads {
  display: block;
  font-family: var(--font-sans);
  max-width: 330px;
  margin: 0 auto;
}

#carbonads .carbon-wrap {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  align-items: flex-start;
  transition: all var(--transition-normal);
}

#carbonads .carbon-wrap:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
}

#carbonads .carbon-img {
  flex-shrink: 0;
}

#carbonads .carbon-img img {
  border-radius: var(--radius-sm);
  display: block;
}

#carbonads .carbon-text {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--text-secondary);
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
}

#carbonads .carbon-text:hover {
  color: var(--text-primary);
}

#carbonads .carbon-poweredby {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  display: block;
}

#carbonads .carbon-poweredby:hover {
  color: var(--text-secondary);
}

/* ---------- Tool Page Layout (main + sidebar) ---------- */
.tool-page-wrapper {
  position: relative;
  z-index: 1;
}

@media (min-width: 1200px) {
  .tool-page-wrapper {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    gap: 24px;
  }
  .tool-page-wrapper main {
    flex: 1;
    min-width: 0;
    max-width: 100%;
  }
  .tool-page-wrapper main .tool-container {
    max-width: 100%;
  }
}

/* Ad container wrapper */
.ad-sidebar {
  width: 100%;
  max-width: 330px;
  margin: var(--space-lg) auto;
  flex-shrink: 0;
}

@media (min-width: 1200px) {
  .ad-sidebar {
    margin: var(--space-2xl) 0;
    position: sticky;
    top: 120px;
    align-self: flex-start;
  }
}

/* Ad placement inside grid layouts */
.ad-grid-item {
  display: flex;
  align-items: start;
  justify-content: center;
  padding: var(--space-md);
}

/* Ad label */
.ad-label {
  text-align: center;
  font-size: 0.6rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
  font-weight: 500;
}

/* ---------- FAQ Section ---------- */
.faq-section {
  max-width: 800px;
  margin: var(--space-2xl) auto;
  padding: 0 24px;
}

.faq-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-lg);
  text-align: center;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.faq-item {
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.faq-question {
  width: 100%;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.02);
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.05);
}

.faq-question .faq-toggle {
  font-size: 0.7rem;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-toggle {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 20px;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 20px 16px;
}

.faq-answer p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ---------- Tool Content Intro ---------- */
.tool-intro {
  max-width: 800px;
  margin: var(--space-xl) auto var(--space-lg);
  padding: 0 24px;
  text-align: center;
}

.tool-intro p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}

.tool-intro .highlight-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: var(--space-md);
}

.tool-intro .highlight-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 1199px) {
  .tool-intro {
    margin-top: var(--space-md);
  }
}

@media (max-width: 600px) {
  .faq-section {
    padding: 0 16px;
  }
  .faq-question {
    padding: 14px 16px;
    font-size: 0.85rem;
  }
}

/* ---------- Loading Spinner ---------- */
.spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--neon-cyan);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---------- Divider ---------- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  margin: var(--space-lg) 0;
  border: none;
}

/* ---------- Animations ---------- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Stagger children animations */
.stagger > * {
  opacity: 0;
  animation: fadeInUp 0.5s ease forwards;
}

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

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


::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ---------- File Upload Area ---------- */
.upload-zone {
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: rgba(255, 255, 255, 0.02);
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--neon-cyan);
  background: rgba(0, 245, 255, 0.03);
  box-shadow: 0 0 30px rgba(0, 245, 255, 0.05);
}

.upload-zone .upload-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.upload-zone .upload-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.upload-zone .upload-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: var(--space-sm);
}

/* ---------- Tooltip ---------- */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: rgba(0, 0, 0, 0.9);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 2px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  padding: 4px;
  overflow-x: auto;
}

.tab {
  padding: 8px 20px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--neon-cyan);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.2rem; }
  
  .container {
    padding: var(--space-md);
  }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .tool-grid {
    grid-template-columns: 1fr;
  }
  
  .header {
    padding: var(--space-sm) var(--space-md);
  }
  
  .header-nav {
    gap: var(--space-sm);
  }
  
  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--space-sm);
  }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.3rem; }
  h3 { font-size: 1.1rem; }
  .btn-lg {
    padding: 12px 20px;
    font-size: 0.9rem;
  }
  .upload-zone {
    padding: var(--space-lg) var(--space-md);
  }
  .upload-zone .upload-icon {
    font-size: 2rem;
  }
  .action-row {
    flex-direction: column;
    gap: var(--space-sm);
  }
  .action-row .btn {
    width: 100%;
  }
  .hero-section h1 {
    font-size: 1.6rem;
  }
  .hero-section p {
    font-size: 0.9rem;
  }
  .header-logo {
    font-size: 1rem;
  }
  .header-nav a {
    font-size: 0.75rem;
  }
  .tool-switcher {
    padding: 2px var(--space-sm);
    top: 48px;
  }
  .tool-switcher a {
    font-size: 0.6rem;
    padding: 2px 5px;
  }
  .tool-switcher a .ts-icon {
    font-size: 0.7rem;
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  .stats-bar {
    gap: var(--space-md);
    flex-wrap: wrap;
  }
  .stat .number {
    font-size: 1.3rem;
  }
}


@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- Print ---------- */

/* ---------- Progress Loader (shared) ---------- */
.progress-loader { padding: var(--space-lg); text-align: center; }
.progress-loader .loader-bar { width: 100%; height: 8px; background: rgba(255,255,255,0.08); border-radius: var(--radius-full); overflow: hidden; margin: var(--space-md) 0; }
.progress-loader .loader-fill { height: 100%; background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple)); border-radius: var(--radius-full); transition: width 0.4s ease; }
.progress-loader .loader-pct { font-size: 1.5rem; font-weight: 700; color: var(--neon-cyan); font-family: var(--font-mono); }
.progress-loader .loader-stage { font-size: 0.8rem; color: var(--text-muted); margin-top: var(--space-xs); }
.progress-loader .loader-label { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: var(--space-sm); }
.ready-message { text-align: center; padding: var(--space-xl); }
.ready-message .ready-icon { font-size: 3rem; margin-bottom: var(--space-md); }
.ready-message .ready-title { font-size: 1.2rem; font-weight: 700; color: var(--neon-green); margin-bottom: var(--space-sm); }
.ready-message .ready-sub { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: var(--space-lg); }
@media print {
  .header { display: none; }
  body { background: white; color: black; }
  .glass, .card { background: white; border: 1px solid #ddd; }
}
/* Neon glow pulse animation for active elements */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 5px rgba(0, 245, 255, 0.3), 0 0 10px rgba(0, 245, 255, 0.1); }
  50% { box-shadow: 0 0 10px rgba(0, 245, 255, 0.5), 0 0 20px rgba(0, 245, 255, 0.2), 0 0 40px rgba(0, 245, 255, 0.1); }
}
.btn-neon-cyan:hover {
  animation: glowPulse 2s ease-in-out infinite;
}

/* Smooth fade-in for page content */
main {
  animation: fadeInUp 0.6s ease-out;
}


  to { opacity: 1; transform: translateY(0); }
}

/* Enhance hero section title */
.hero-section h1 .neon-text-cyan,
.hero-section h1 .neon-text-purple {
  position: relative;
  display: inline-block;
}
.hero-section h1 .neon-text-cyan::after,
.hero-section h1 .neon-text-purple::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  opacity: 0.5;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.hero-section h1:hover .neon-text-cyan::after,
.hero-section h1:hover .neon-text-purple::after {
  transform: scaleX(1);
}

/* Enhanced tool-switcher */
.tool-switcher a:hover {
  background: rgba(0, 245, 255, 0.08);
  transform: translateY(-1px);
}
.tool-switcher a.active {
  background: rgba(0, 245, 255, 0.12);
  color: var(--neon-cyan);
  text-shadow: 0 0 10px rgba(0, 245, 255, 0.3);
}

/* Scrollbar enhancements */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.02);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb {
  background: rgba(0, 245, 255, 0.3);
  border-radius: 3px;
  transition: background var(--transition-fast);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 245, 255, 0.5);
}

/* Floating particles background enhancement */
body::before {
  animation: particlesFloat 20s ease-in-out infinite;
}
@keyframes particlesFloat {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.5; }
}

/* Badge hover effect */
.badge {
  transition: all var(--transition-fast);
}
.badge:hover {
  transform: scale(1.05);
}

/* Feature card staggered animation */
.project-card {
  animation: fadeInUp 0.6s ease-out both;
}
.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.15s; }
.project-card:nth-child(3) { animation-delay: 0.2s; }
.project-card:nth-child(4) { animation-delay: 0.25s; }
.project-card:nth-child(5) { animation-delay: 0.3s; }
.project-card:nth-child(6) { animation-delay: 0.35s; }

/* Upload zone hover enhancement */
.upload-zone {
  transition: all var(--transition-normal);
}
.upload-zone:hover {
  border-color: var(--neon-cyan);
  background: rgba(0, 245, 255, 0.03);
  transform: translateY(-2px);
}

/* Tab hover effects */
.tab {
  transition: all var(--transition-fast);
}
.tab:hover {
  background: rgba(0, 245, 255, 0.05);
}
.tab.active {
  background: rgba(0, 245, 255, 0.1);
  color: var(--neon-cyan);
}

/* Stats bar animation */
.stat-item {
  animation: fadeInUp 0.5s ease-out both;
}
.stat-item:nth-child(1) { animation-delay: 0.3s; }
.stat-item:nth-child(2) { animation-delay: 0.4s; }
.stat-item:nth-child(3) { animation-delay: 0.5s; }
.stat-item:nth-child(4) { animation-delay: 0.6s; }

/* Form input focus enhancement */
.glass-input:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1), 0 0 20px rgba(0, 245, 255, 0.05);
  transform: translateY(-1px);
}