/* ============================================
   TOOLLABSX WEBSITE - MAIN STYLESHEET
   ============================================ */

/* CSS Variables - Easily editable theme colors */
:root {
  /* Light Mode Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-secondary: #10b981;
  --color-accent: #f59e0b;
  --color-bg: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;
  --color-text: #111827;
  --color-text-secondary: #6b7280;
  --color-border: #e5e7eb;
  --color-error: #ef4444;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  
  /* Dark Mode Colors */
  --color-primary-dm: #3b82f6;
  --color-primary-dark-dm: #2563eb;
  --color-secondary-dm: #34d399;
  --color-accent-dm: #fbbf24;
  --color-bg-dm: #111827;
  --color-bg-secondary-dm: #1f2937;
  --color-bg-tertiary-dm: #374151;
  --color-text-dm: #f9fafb;
  --color-text-secondary-dm: #d1d5db;
  --color-border-dm: #4b5563;
  --color-error-dm: #f87171;
  --color-success-dm: #34d399;
  --color-warning-dm: #fbbf24;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
  --shadow-glow-secondary: 0 0 20px rgba(16, 185, 129, 0.3);
}

/* Dark Mode */
[data-theme="dark"] {
  --color-primary: var(--color-primary-dm);
  --color-primary-dark: var(--color-primary-dark-dm);
  --color-secondary: var(--color-secondary-dm);
  --color-accent: var(--color-accent-dm);
  --color-bg: var(--color-bg-dm);
  --color-bg-secondary: var(--color-bg-secondary-dm);
  --color-bg-tertiary: var(--color-bg-tertiary-dm);
  --color-text: var(--color-text-dm);
  --color-text-secondary: var(--color-text-secondary-dm);
  --color-border: var(--color-border-dm);
  --color-error: var(--color-error-dm);
  --color-success: var(--color-success-dm);
  --color-warning: var(--color-warning-dm);
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
  background-attachment: fixed;
  transition: background var(--transition-base), color var(--transition-base);
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  letter-spacing: -0.02em;
}

h1 {
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="dark"] h1 {
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

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

a:hover,
a:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Skip to Content Link */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 1000;
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  border-radius: 0 0 var(--radius-md) 0;
  font-weight: var(--font-weight-medium);
  transition: top var(--transition-base), opacity var(--transition-base);
}

.skip-to-content:focus {
  top: 0;
  opacity: 1;
  pointer-events: auto;
  outline: 2px solid white;
  outline-offset: 2px;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Main Content - Adjust for sidebar ads */
main {
  position: relative;
}

@media (min-width: 1401px) {
  main .container {
    max-width: 1200px;
    margin: 0 auto;
  }
  
  /* Ensure content doesn't overlap with fixed sidebars */
  main {
    padding-left: 0;
    padding-right: 0;
  }
}

/* Header & Navigation */
header {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] header {
  background: rgba(31, 41, 55, 0.8);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  width: 100%;
}

nav > *:first-child {
  margin-right: auto;
}

nav > *:last-child {
  margin-left: auto;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: transform var(--transition-fast);
  margin-right: auto;
  flex-shrink: 0;
}

.logo:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
  margin-left: auto;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a:focus {
  background-color: var(--color-bg-secondary);
  text-decoration: none;
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
}

.dropdown-arrow {
  font-size: 0.7em;
  transition: transform var(--transition-fast);
}

.dropdown:hover .dropdown-arrow,
.dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  list-style: none;
  padding: var(--spacing-sm) 0;
  margin: var(--spacing-sm) 0 0 0;
  min-width: 240px;
  max-height: 70vh;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  z-index: 1000;
}

[data-theme="dark"] .dropdown-menu {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
}

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

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--color-text);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border-radius: 0;
}

.dropdown-menu a:hover,
.dropdown-menu a:focus {
  background-color: var(--color-bg-secondary);
  color: var(--color-primary);
  text-decoration: none;
}

.dropdown-header {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--spacing-xs);
  border-top: 1px solid var(--color-border);
}

.dropdown-header:first-child {
  border-top: none;
  margin-top: 0;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--font-size-2xl);
  transition: transform var(--transition-base), color var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  position: relative;
}

.theme-toggle:hover,
.theme-toggle:focus {
  transform: scale(1.1) rotate(15deg);
  outline: none;
}

.theme-toggle:active {
  transform: scale(0.95) rotate(15deg);
}

/* Icon animation for theme toggle */
.theme-toggle .theme-icon {
  display: inline-block;
  transition: transform var(--transition-base), opacity var(--transition-base), filter var(--transition-base), text-shadow var(--transition-base);
  transform-origin: center;
  font-size: 1.2em;
}

/* Light mode icon (sun) - bright and glowing */
[data-theme="light"] .theme-toggle .theme-icon {
  filter: drop-shadow(0 0 10px rgba(255, 215, 0, 0.8)) drop-shadow(0 0 20px rgba(255, 215, 0, 0.4));
  transform: rotate(0deg) scale(1);
  opacity: 1;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.6);
}

/* Dark mode icon (moon) - dimmer with cool glow */
[data-theme="dark"] .theme-toggle .theme-icon {
  filter: drop-shadow(0 0 8px rgba(147, 197, 253, 0.6)) drop-shadow(0 0 15px rgba(147, 197, 253, 0.3));
  transform: rotate(-20deg) scale(0.95);
  opacity: 0.9;
  text-shadow: 0 0 8px rgba(147, 197, 253, 0.5);
}

/* Animation when theme changes */
.theme-toggle.animating .theme-icon {
  animation: themeToggle 0.6s ease-in-out;
}

@keyframes themeToggle {
  0% {
    transform: rotate(0deg) scale(1);
    opacity: 1;
  }
  50% {
    transform: rotate(180deg) scale(1.3);
    opacity: 0.5;
  }
  100% {
    transform: rotate(360deg) scale(1);
    opacity: 1;
  }
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  color: white;
  font-size: var(--font-size-xl);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

.menu-toggle:hover,
.menu-toggle:focus {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
  outline: none;
}

.menu-toggle:active {
  transform: scale(0.95);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
  color: white;
  padding: var(--spacing-3xl) var(--spacing-md);
  text-align: center;
  margin-bottom: var(--spacing-3xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: rotate 20s linear infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.hero h1 {
  color: white;
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-cta {
  display: inline-block;
  background: white;
  color: var(--color-primary);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-base);
  text-decoration: none;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.hero-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.hero-cta:hover::before,
.hero-cta:focus::before {
  width: 300px;
  height: 300px;
}

.hero-cta:hover,
.hero-cta:focus {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-2xl);
  text-decoration: none;
}

.hero-cta:active {
  transform: translateY(-1px) scale(1.02);
}

/* Tools Grid */
.tools-section {
  padding: var(--spacing-3xl) 0;
}

/* Tool Category */
.tool-category {
  margin-bottom: var(--spacing-3xl);
}

.tool-category:last-child {
  margin-bottom: 0;
}

.category-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 3px solid;
  border-image: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%) 1;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  position: relative;
}

.category-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.category-title svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.3));
  transition: all var(--transition-base);
}

[data-theme="dark"] .category-title svg {
  stroke: var(--color-primary-dm);
  filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.3));
}

.category-title:hover svg {
  transform: scale(1.15) rotate(5deg);
  stroke: var(--color-secondary);
  filter: drop-shadow(0 4px 8px rgba(16, 185, 129, 0.4));
}

.category-title::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 2px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.tool-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: var(--color-text);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .tool-card {
  background: rgba(31, 41, 55, 0.7);
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.1), transparent);
  transition: left 0.5s;
}

.tool-card:hover::before {
  left: 100%;
}

.tool-card:hover,
.tool-card:focus {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  text-decoration: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.9);
}

[data-theme="dark"] .tool-card:hover,
[data-theme="dark"] .tool-card:focus {
  background: rgba(31, 41, 55, 0.9);
}

.tool-card:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.tool-card:active {
  transform: translateY(-4px) scale(1.01);
}

.tool-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
  display: block;
  transition: transform var(--transition-base);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.tool-card:hover .tool-icon {
  transform: scale(1.2) rotate(5deg);
}

.tool-card h3 {
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.tool-card p {
  font-size: var(--font-size-sm);
  margin: 0;
}

/* Tool Page Styles */
.tool-page {
  padding: var(--spacing-3xl) 0;
  max-width: 900px;
  margin: 0 auto;
  animation: fadeIn 0.6s ease;
}

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

.tool-description {
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.tool-example {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.tool-example::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

/* Input/Output Areas */
.input-group {
  margin-bottom: var(--spacing-xl);
}

.input-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

textarea,
input[type="text"],
input[type="number"],
input[type="email"],
input[type="url"],
select {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--color-text);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] textarea,
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="number"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="url"],
[data-theme="dark"] select {
  background: rgba(31, 41, 55, 0.9);
}

textarea:focus,
input:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--shadow-md);
  transform: translateY(-1px);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

.output-area {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  min-height: 100px;
  margin-bottom: var(--spacing-lg);
  word-wrap: break-word;
  white-space: pre-wrap;
  box-shadow: var(--shadow-inner);
  transition: all var(--transition-base);
}

[data-theme="dark"] .output-area {
  background: rgba(31, 41, 55, 0.7);
}

.output-area:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1), var(--shadow-md);
}

.output-area:empty::before {
  content: "Output will appear here...";
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-lg);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .btn-secondary {
  background: rgba(31, 41, 55, 0.9);
}

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

.btn-secondary:active {
  transform: translateY(0);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

/* Notification Toast */
.toast {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
  color: white;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl), var(--shadow-glow-secondary);
  z-index: 1000;
  opacity: 0;
  transform: translateY(20px) scale(0.9);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.toast.show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.toast.error {
  background: linear-gradient(135deg, var(--color-error) 0%, #dc2626 100%);
  box-shadow: var(--shadow-xl), 0 0 20px rgba(239, 68, 68, 0.3);
}

/* Footer */
footer {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-3xl);
  box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
  position: relative;
}

[data-theme="dark"] footer {
  background: rgba(31, 41, 55, 0.8);
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-column a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-column a:hover,
.footer-column a:focus {
  color: var(--color-primary);
}

.social-icons {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-icons a {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

[data-theme="dark"] .social-icons a {
  background: rgba(31, 41, 55, 0.5);
}

.social-icons a:hover,
.social-icons a:focus {
  transform: translateY(-3px) scale(1.1);
  color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  box-shadow: var(--shadow-md);
}

.newsletter-input {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.newsletter-input input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.newsletter-input button {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  border-left: none;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

/* Form Styles */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
}

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-error);
  animation: shake 0.3s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.form-error.show {
  display: block;
}

/* Stats Display */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

[data-theme="dark"] .stat-card {
  background: rgba(31, 41, 55, 0.7);
}

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

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

/* Image Upload Area */
.image-upload-area {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .image-upload-area {
  background: rgba(31, 41, 55, 0.5);
}

.image-upload-area:hover,
.image-upload-area.dragover {
  border-color: var(--color-primary);
  background: rgba(37, 99, 235, 0.1);
  border-style: solid;
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}

.image-upload-area input[type="file"] {
  display: none;
}

.image-preview {
  max-width: 100%;
  max-height: 400px;
  border-radius: var(--radius-md);
  margin-top: var(--spacing-lg);
  display: none;
}

.image-preview.show {
  display: block;
}

/* Ad Placement Containers */
.ad-container {
  width: 100%;
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-md) 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100px;
  background: transparent;
  border-radius: var(--radius-md);
}

.ad-banner {
  min-height: 90px;
  max-width: 100%;
}

/* Sidebar Ads */
.ad-sidebar {
  position: fixed;
  top: 80px;
  width: 160px;
  min-height: 600px;
  max-height: calc(100vh - 100px);
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding: var(--spacing-md);
  background: transparent;
  border-radius: var(--radius-md);
  z-index: 50;
  transition: opacity var(--transition-base);
  overflow-y: auto;
}

.ad-sidebar-left {
  left: var(--spacing-md);
}

.ad-sidebar-right {
  right: var(--spacing-md);
}

.ad-sidebar ins,
.ad-sidebar iframe,
.ad-sidebar div {
  display: block;
  width: 100%;
  max-width: 160px;
  margin: 0 auto;
}

/* Hide sidebar ads on smaller screens */
@media (max-width: 1400px) {
  .ad-sidebar {
    display: none;
  }
  
  main {
    padding: 0 !important;
  }
}

/* Hide ad containers if empty (no ad code) */
.ad-container:empty,
.ad-sidebar:empty {
  display: none;
}

.ad-container ins,
.ad-container iframe,
.ad-container div {
  display: block;
  margin: 0 auto;
}

/* Responsive Design */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-base);
    border-top: 1px solid var(--color-border);
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    max-height: none;
    margin: var(--spacing-sm) 0;
    padding: 0;
    min-width: auto;
  }
  
  .dropdown.active .dropdown-menu {
    display: block;
  }
  
  .dropdown-menu a {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .dropdown-header {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  
  .tools-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
  }
  
  .tool-category {
    margin-bottom: var(--spacing-2xl);
  }
  
  .category-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
  }
  
  .category-title svg {
    width: 28px;
    height: 28px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn-group .btn {
    width: 100%;
  }
  
  .toast {
    right: var(--spacing-md);
    left: var(--spacing-md);
  }

  .ad-container {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-sm) 0;
  }

  .ad-banner {
    min-height: 50px;
  }
}

@media (max-width: 480px) {
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .category-title {
    font-size: var(--font-size-lg);
  }
  
  .category-title svg {
    width: 24px;
    height: 24px;
  }
  
  h1 {
    font-size: var(--font-size-3xl);
  }
  
  h2 {
    font-size: var(--font-size-2xl);
  }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 10px;
  border: 2px solid var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
}

/* Selection */
::selection {
  background: rgba(37, 99, 235, 0.3);
  color: var(--color-text);
}

::-moz-selection {
  background: rgba(37, 99, 235, 0.3);
  color: var(--color-text);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-xl); }

.hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* QR Code Output Styles */
.qr-output {
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-lg);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.qr-output h3 {
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

#qrcode {
  display: inline-block;
  padding: var(--spacing-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

#qrcode canvas {
  display: block;
  margin: 0 auto;
}

[data-theme="dark"] .qr-output {
  background: var(--color-bg-secondary-dm);
}

[data-theme="dark"] #qrcode {
  background: var(--color-bg-dm);
}