/* CSS Reset and Custom Properties */
:root {
  /* Colors - Deep Blue & Light Blue Theme */
  --color-primary: #143DE0;
  --color-primary-dark: #3414E1;
  --color-secondary: #64748b;
  --color-accent: #70AAE0;
  --color-accent-dark: #5B8BC7;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Background Colors */
  --color-bg-primary: #FEFEFE;
  --color-bg-secondary: #F9FAFB;
  --color-bg-tertiary: #F3F4F6;
  --color-bg-elevated: #FFFFFF;
  --color-bg-glass: rgba(255, 255, 255, 0.85);
  
  /* Text Colors */
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-text-muted: #D1D5DB;
  
  /* Border Colors */
  --color-border-primary: #E5E7EB;
  --color-border-secondary: #D1D5DB;
  --color-border-focus: #6366F1;
  
  /* Shadow */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* 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-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Layout */
  --container-max-width: 1200px;
  --header-height: 4rem;
}

/* Dark Theme - Modern Dark */
[data-theme="dark"] {
  --color-bg-primary: #0D1117;
  --color-bg-secondary: #161B22;
  --color-bg-tertiary: #21262D;
  --color-bg-elevated: #161B22;
  --color-bg-glass: rgba(22, 27, 34, 0.85);
  
  --color-text-primary: #F0F6FC;
  --color-text-secondary: #8B949E;
  --color-text-tertiary: #6E7681;
  --color-text-muted: #484F58;
  
  --color-border-primary: #30363D;
  --color-border-secondary: #21262D;
  --color-border-focus: #7C3AED;
  
  --color-primary: #7C3AED;
  --color-primary-dark: #6D28D9;
  --color-accent: #06B6D4;
  --color-accent-dark: #0891B2;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.4);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
}

/* RTL Support */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .logo {
  flex-direction: row-reverse;
}

[dir="rtl"] .nav-controls {
  flex-direction: row-reverse;
}

[dir="rtl"] .search-box {
  flex-direction: row-reverse;
}

[dir="rtl"] .tool-actions {
  flex-direction: row-reverse;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 80%, rgba(20, 61, 224, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(112, 170, 224, 0.25) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(52, 20, 225, 0.2) 0%, transparent 50%),
    linear-gradient(135deg, rgba(20, 61, 224, 0.1) 0%, rgba(112, 170, 224, 0.1) 50%, rgba(52, 20, 225, 0.1) 100%),
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 4px,
      rgba(20, 61, 224, 0.04) 4px,
      rgba(20, 61, 224, 0.04) 8px
    ),
    url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23143DE0' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='8'/%3E%3Cpolygon points='30,10 45,25 30,40 15,25'/%3E%3C/g%3E%3C/svg%3E");
  animation: backgroundShift 20s ease-in-out infinite alternate, wave 8s ease-in-out infinite;
  z-index: -2;
  pointer-events: none;
}

/* Floating Particles */
.floating-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.particle {
  position: absolute;
  background: linear-gradient(45deg, #143DE0, #70AAE0, #3414E1);
  border-radius: 50%;
  opacity: 0.7;
  animation: float 15s infinite linear, morphBackground 8s ease-in-out infinite, colorShift 6s ease-in-out infinite;
  box-shadow: 0 0 20px rgba(20, 61, 224, 0.4);
}

.particle:nth-child(1) {
  width: 8px;
  height: 8px;
  left: 10%;
  animation-delay: 0s;
  animation-duration: 12s;
}

.particle:nth-child(2) {
  width: 12px;
  height: 12px;
  left: 20%;
  animation-delay: 2s;
  animation-duration: 18s;
}

.particle:nth-child(3) {
  width: 6px;
  height: 6px;
  left: 30%;
  animation-delay: 4s;
  animation-duration: 14s;
}

.particle:nth-child(4) {
  width: 10px;
  height: 10px;
  left: 40%;
  animation-delay: 1s;
  animation-duration: 16s;
}

.particle:nth-child(5) {
  width: 14px;
  height: 14px;
  left: 50%;
  animation-delay: 3s;
  animation-duration: 20s;
}

.particle:nth-child(6) {
  width: 8px;
  height: 8px;
  left: 60%;
  animation-delay: 5s;
  animation-duration: 15s;
}

.particle:nth-child(7) {
  width: 12px;
  height: 12px;
  left: 70%;
  animation-delay: 2.5s;
  animation-duration: 17s;
}

.particle:nth-child(8) {
  width: 6px;
  height: 6px;
  left: 80%;
  animation-delay: 4.5s;
  animation-duration: 13s;
}

.particle:nth-child(9) {
  width: 10px;
  height: 10px;
  left: 90%;
  animation-delay: 1.5s;
  animation-duration: 19s;
}

.floating-icon {
  position: absolute;
  font-size: 1.5rem;
  opacity: 0.8;
  animation: float 20s infinite linear, rotate 8s ease-in-out infinite, pulse 3s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}

.floating-icon:nth-child(10) {
  left: 15%;
  animation-delay: 0s;
  animation-duration: 18s;
}

.floating-icon:nth-child(11) {
  left: 35%;
  animation-delay: 4s;
  animation-duration: 22s;
}

.floating-icon:nth-child(12) {
  left: 55%;
  animation-delay: 8s;
  animation-duration: 16s;
}

.floating-icon:nth-child(13) {
  left: 75%;
  animation-delay: 12s;
  animation-duration: 20s;
}

.floating-icon:nth-child(14) {
  left: 95%;
  animation-delay: 6s;
  animation-duration: 24s;
}

/* Floating Geometric Shapes */
.floating-shape {
  position: absolute;
  opacity: 0.3;
  animation: float 25s infinite linear, rotate 12s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}

.hexagon {
  width: 30px;
  height: 26px;
  background: linear-gradient(45deg, var(--color-primary), var(--color-accent));
  position: relative;
  left: 25%;
  animation-delay: 2s;
  animation-duration: 28s;
}

.hexagon:before,
.hexagon:after {
  content: "";
  position: absolute;
  width: 0;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
}

.hexagon:before {
  bottom: 100%;
  border-bottom: 8px solid #143DE0;
}

.hexagon:after {
  top: 100%;
  border-top: 8px solid #143DE0;
}

.diamond {
  width: 25px;
  height: 25px;
  background: linear-gradient(45deg, var(--color-accent), var(--color-primary));
  transform: rotate(45deg);
  left: 65%;
  animation-delay: 8s;
  animation-duration: 22s;
  border-radius: 3px;
}

.triangle {
  width: 0;
  height: 0;
  border-left: 15px solid transparent;
  border-right: 15px solid transparent;
  border-bottom: 26px solid #70AAE0;
  left: 45%;
  animation-delay: 12s;
  animation-duration: 30s;
}

.square {
  width: 20px;
  height: 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 4px;
  left: 85%;
  animation-delay: 16s;
  animation-duration: 26s;
  opacity: 0.4;
}

/* Background and Particle Animations */
@keyframes backgroundShift {
  0% {
    transform: translateX(-10px) translateY(-10px) scale(1);
  }
  100% {
    transform: translateX(10px) translateY(10px) scale(1.02);
  }
}

@keyframes float {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0.6;
  }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}

/* Page Load Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(59, 130, 246, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
  }
}

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

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-5px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(5px);
  }
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(100%);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 5px rgba(59, 130, 246, 0.3);
  }
  50% {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.6);
  }
}

/* Page Elements Animation Classes */
.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

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

.animate-slide-in-left {
  animation: slideInFromLeft 0.6s ease-out;
}

.animate-slide-in-right {
  animation: slideInFromRight 0.6s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.5s ease-out;
}

.animate-bounce-in {
  animation: bounceIn 0.8s ease-out;
}

/* Staggered Animation Delays */
.animate-delay-100 { animation-delay: 0.1s; }
.animate-delay-200 { animation-delay: 0.2s; }
.animate-delay-300 { animation-delay: 0.3s; }
.animate-delay-400 { animation-delay: 0.4s; }
.animate-delay-500 { animation-delay: 0.5s; }

/* Typing Indicator Animation */
.typing-dots {
  display: flex;
  gap: 4px;
  align-items: center;
}

.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-text-secondary);
  animation: typingDot 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0s; }

@keyframes typingDot {
  0%, 80%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Toast Notifications */
@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Page Transition Effects */
.page-transition {
  animation: fadeIn 0.8s ease-out;
}

.main-content {
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

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 {
  color: var(--color-primary-dark);
}

/* Layout */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.main {
  flex: 1;
  padding-top: var(--header-height);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1000;
  transition: all var(--transition-normal);
  animation: slideInFromLeft 0.8s ease-out;
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.05);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: transform var(--transition-fast);
}

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

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: inherit;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.logo-icon {
  font-size: var(--font-size-2xl);
  animation: float 3s ease-in-out infinite;
  transition: transform var(--transition-fast);
}

.logo:hover .logo-icon {
  animation-play-state: paused;
  transform: rotate(10deg) scale(1.1);
}

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

/* Back Button */
.back-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.back-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* Language Switcher */
.language-switcher {
  position: relative;
  animation: slideInFromRight 0.8s ease-out 0.1s both;
}

.language-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.language-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.language-dropdown {
  position: absolute;
  top: calc(100% + var(--spacing-sm));
  right: 0;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 120px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
  z-index: 1001;
}

.language-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  animation: slideUp 0.3s ease-out;
}

.language-option {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  background: transparent;
  border: none;
  text-align: left;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.language-option:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  transform: translateX(5px);
}

.language-option:first-child {
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.language-option:last-child {
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* Theme Toggle */
.theme-toggle {
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  background: transparent;
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  overflow: hidden;
  animation: slideInFromRight 0.8s ease-out 0.2s both;
}

.theme-toggle:hover {
  background-color: var(--color-bg-secondary);
  transform: scale(1.1) rotate(15deg);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.theme-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1.25rem;
  height: 1.25rem;
  transition: all var(--transition-normal);
  color: var(--color-text-secondary);
}

.theme-icon-light {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg);
}

.theme-icon-dark {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(180deg);
}

[data-theme="dark"] .theme-icon-light {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(-180deg);
}

[data-theme="dark"] .theme-icon-dark {
  opacity: 1;
  transform: translate(-50%, -50%) rotate(0deg);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #143DE0 0%, #70AAE0 50%, #3414E1 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
    linear-gradient(135deg, rgba(20, 61, 224, 0.2) 0%, rgba(112, 170, 224, 0.2) 50%, rgba(52, 20, 225, 0.2) 100%);
  animation: float 8s ease-in-out infinite, backgroundShift 15s ease-in-out infinite alternate;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: 
    url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,60 C300,120 600,0 900,60 C1050,90 1200,30 1200,60 V120 H0 V60Z' fill='%23ffffff' fill-opacity='0.1'/%3E%3C/svg%3E"),
    linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.05) 50%, transparent 70%);
  animation: shimmer 3s ease-in-out infinite, wave 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes shimmer {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

@keyframes patternMove {
  0% { transform: translateX(0) translateY(0); }
  100% { transform: translateX(30px) translateY(30px); }
}

@keyframes morphBackground {
  0%, 100% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }
  50% {
    border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
  }
}

@keyframes colorShift {
  0%, 100% {
    background: linear-gradient(45deg, #143DE0, #70AAE0, #3414E1);
  }
  33% {
    background: linear-gradient(120deg, #70AAE0, #3414E1, #143DE0);
  }
  66% {
    background: linear-gradient(240deg, #3414E1, #143DE0, #70AAE0);
  }
}

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

@keyframes wave {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-30px);
  }
  60% {
    transform: translateY(-15px);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes slideInBounce {
  0% {
    transform: translateX(-50px);
    opacity: 0;
  }
  60% {
    transform: translateX(10px);
    opacity: 1;
  }
  100% {
    transform: translateX(0);
    opacity: 1;
  }
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: white;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 1s ease-out, bounce 2s ease-in-out infinite 1s;
  line-height: 1.2;
  background: linear-gradient(45deg, #143DE0, #70AAE0, #3414E1);
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientMove 4s ease-in-out infinite;
  animation: fadeInUp 1s ease-out, wave 3s ease-in-out infinite 1s, gradientMove 4s ease-in-out infinite;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-2xl);
  animation: fadeInUp 1s ease-out 0.2s both;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Search */
.search-container {
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 1s ease-out 0.4s both;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-fast);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transform: translateY(0);
}

.search-box:focus-within {
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.98);
}

.search-box:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.12);
  background: rgba(255, 255, 255, 0.97);
}

.search-icon {
  flex-shrink: 0;
  margin-left: var(--spacing-lg);
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

.search-box:focus-within .search-icon {
  color: var(--color-primary);
}

.search-input {
  flex: 1;
  padding: var(--spacing-lg);
  background: transparent;
  border: none;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  outline: none;
}

.search-input::placeholder {
  color: var(--color-text-tertiary);
}

.search-clear {
  flex-shrink: 0;
  padding: var(--spacing-sm);
  margin-right: var(--spacing-sm);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.search-clear.show {
  opacity: 1;
  visibility: visible;
}

.search-clear:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* Categories */
.categories {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-primary);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg-secondary) 100%);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease-out forwards;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }
.category-card:nth-child(5) { animation-delay: 0.5s; }
.category-card:nth-child(6) { animation-delay: 0.6s; }
.category-card:nth-child(7) { animation-delay: 0.7s; }
.category-card:nth-child(8) { animation-delay: 0.8s; }

.category-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border-color: var(--color-primary);
}

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

.category-card.active {
  background: linear-gradient(135deg, #143DE0 0%, #70AAE0 100%);
  color: white;
  transform: translateY(-8px) scale(1.05);
  box-shadow: 0 25px 50px rgba(20, 61, 224, 0.4);
  border-color: transparent;
}

.category-card.active .category-icon,
.category-card.active .category-name,
.category-card.active .category-count {
  color: white;
}

.category-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-normal);
}

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

.category-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  text-align: center;
}

.category-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.category-card.active .category-count {
  color: rgba(255, 255, 255, 0.8);
}

/* Tools Section */
.tools {
  padding: var(--spacing-2xl) 0 var(--spacing-3xl);
}

.tools-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

.tools-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

/* Tool Card */
.tool-card {
  background: linear-gradient(145deg, var(--color-bg-elevated) 0%, var(--color-bg-secondary) 100%);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease-out forwards;
  position: relative;
  backdrop-filter: blur(10px);
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(145deg, transparent 0%, rgba(255, 255, 255, 0.05) 50%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.tool-card:nth-child(1) { animation-delay: 0.1s; }
.tool-card:nth-child(2) { animation-delay: 0.2s; }
.tool-card:nth-child(3) { animation-delay: 0.3s; }
.tool-card:nth-child(4) { animation-delay: 0.4s; }
.tool-card:nth-child(5) { animation-delay: 0.5s; }
.tool-card:nth-child(6) { animation-delay: 0.6s; }
.tool-card:nth-child(7) { animation-delay: 0.7s; }
.tool-card:nth-child(8) { animation-delay: 0.8s; }
.tool-card:nth-child(9) { animation-delay: 0.9s; }
.tool-card:nth-child(10) { animation-delay: 1.0s; }
.tool-card:nth-child(11) { animation-delay: 1.1s; }
.tool-card:nth-child(12) { animation-delay: 1.2s; }

.tool-card:hover {
  transform: translateY(-16px) scale(1.03);
  box-shadow: 0 25px 50px rgba(20, 61, 224, 0.2);
  border-color: var(--color-primary);
}

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

.tool-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-normal), filter var(--transition-normal);
}

.tool-card:hover .tool-card-image {
  transform: scale(1.1) rotate(2deg);
  filter: brightness(1.1) saturate(1.2);
}

.tool-card-content {
  padding: var(--spacing-xl);
}

.tool-card-category {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-bg-secondary);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-md);
}

.tool-card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.tool-card-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.tool-card-pricing {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-success);
}

.tool-card-link {
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, #143DE0 0%, #70AAE0 100%);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  border: none;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(20, 61, 224, 0.3);
}

.tool-card-link::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 ease;
}

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

.tool-card-link:hover {
  background: linear-gradient(135deg, #3414E1 0%, #5B8BC7 100%);
  color: white;
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 20px rgba(20, 61, 224, 0.5);
}

/* Tool Details Page */
.tool-details {
  padding: var(--spacing-2xl) 0;
}

.tool-header {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border-primary);
}

.tool-image-container {
  position: relative;
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.tool-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tool-info .tool-category {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-primary);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.tool-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
}

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

.tool-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  justify-content: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

/* Content Sections */
.tool-content {
  margin-bottom: var(--spacing-3xl);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.content-section {
  background-color: var(--color-bg-elevated);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-primary);
}

.content-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
}

.features-list {
  list-style: none;
}

.features-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.features-list li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: 600;
  flex-shrink: 0;
}

.pricing-info {
  color: var(--color-text-secondary);
}

.use-cases {
  color: var(--color-text-secondary);
}

.specifications {
  color: var(--color-text-secondary);
}

/* Related Tools */
.related-tools {
  margin-top: var(--spacing-3xl);
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border-primary);
}

/* Loading */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  text-align: center;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--color-border-primary);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-lg);
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* No Results */
.no-results {
  text-align: center;
  padding: var(--spacing-3xl);
}

.no-results-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.no-results h4 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.no-results p {
  color: var(--color-text-secondary);
}

/* Error State */
.error-state {
  padding: var(--spacing-3xl) 0;
}

.error-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.error-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
}

/* Chatbot Styles */
.chatbot-container {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: 1100;
}

.chatbot-toggle {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #143DE0 0%, #70AAE0 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(20, 61, 224, 0.4);
  transition: all var(--transition-normal);
  color: white;
  animation: bounceIn 1s ease-out 2s both, rotate 4s linear infinite 3s, pulse 2s ease-in-out infinite;
  position: relative;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.chatbot-toggle::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, #143DE0, #70AAE0, #143DE0);
  border-radius: 50%;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.chatbot-toggle:hover {
  transform: scale(1.15) rotate(10deg);
  box-shadow: 0 12px 35px rgba(20, 61, 224, 0.6);
  animation: bounce 0.5s ease-in-out;
}

.chatbot-toggle:hover::before {
  opacity: 1;
  animation: spin 2s linear infinite;
}

.chatbot-toggle i {
  width: 24px;
  height: 24px;
}

.chatbot-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 380px;
  height: 500px;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(30px) scale(0.8) rotate(-5deg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.chatbot-window.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1) rotate(0deg);
  animation: bounceIn 0.5s ease-out;
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-primary);
  background: linear-gradient(135deg, #143DE0 0%, #70AAE0 100%);
  color: white;
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.chatbot-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
}

.chatbot-close {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.chatbot-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.chatbot-messages {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
  max-height: 300px;
}

.chatbot-message {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.4s ease-out forwards;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bot-message .message-avatar {
  background: linear-gradient(135deg, #143DE0 0%, #70AAE0 100%);
  color: white;
}

.user-message .message-avatar {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-secondary);
  order: 2;
}

.user-message {
  flex-direction: row-reverse;
}

.message-content {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  max-width: 80%;
  position: relative;
}

.bot-message .message-content {
  background-color: var(--color-bg-secondary);
}

.user-message .message-content {
  background-color: var(--color-primary);
  color: white;
}

.message-content p {
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: 1.4;
}

.chatbot-input-container {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border-primary);
}

.chatbot-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.suggestion-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.suggestion-btn:hover {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.chatbot-input-wrapper {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

.chatbot-input {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  outline: none;
  transition: border-color var(--transition-fast);
}

.chatbot-input:focus {
  border-color: var(--color-primary);
}

.chatbot-input::placeholder {
  color: var(--color-text-tertiary);
}

.chatbot-send {
  padding: var(--spacing-md);
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chatbot-send:hover {
  background-color: var(--color-primary-dark);
}

.chatbot-send:disabled {
  background-color: var(--color-text-tertiary);
  cursor: not-allowed;
}

.typing-indicator {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xs);
}

.typing-dots {
  display: flex;
  gap: 2px;
}

.typing-dot {
  width: 4px;
  height: 4px;
  background-color: var(--color-text-tertiary);
  border-radius: 50%;
  animation: typing 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0s; }

@keyframes typing {
  0%, 80%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  40% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Responsive Chatbot */
@media (max-width: 480px) {
  .chatbot-container {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    left: var(--spacing-md);
  }
  
  .chatbot-window {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    border-radius: 0;
  }
  
  .chatbot-header {
    border-radius: 0;
  }
}

/* Footer */
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-primary);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  margin-top: auto;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer-section p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

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

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

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

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-bg-elevated);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
}

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

/* Category Colors */
.category-writing { --category-color: #3b82f6; }
.category-images { --category-color: #10b981; }
.category-code { --category-color: #8b5cf6; }
.category-voice { --category-color: #f59e0b; }
.category-video { --category-color: #ef4444; }
.category-design { --category-color: #06b6d4; }
.category-productivity { --category-color: #84cc16; }
.category-research { --category-color: #f97316; }

.tool-card[data-category="writing"] .tool-card-category { background-color: rgba(59, 130, 246, 0.1); color: #3b82f6; }
.tool-card[data-category="images"] .tool-card-category { background-color: rgba(16, 185, 129, 0.1); color: #10b981; }
.tool-card[data-category="code"] .tool-card-category { background-color: rgba(139, 92, 246, 0.1); color: #8b5cf6; }
.tool-card[data-category="voice"] .tool-card-category { background-color: rgba(245, 158, 11, 0.1); color: #f59e0b; }
.tool-card[data-category="video"] .tool-card-category { background-color: rgba(239, 68, 68, 0.1); color: #ef4444; }
.tool-card[data-category="design"] .tool-card-category { background-color: rgba(6, 182, 212, 0.1); color: #06b6d4; }
.tool-card[data-category="productivity"] .tool-card-category { background-color: rgba(132, 204, 22, 0.1); color: #84cc16; }
.tool-card[data-category="research"] .tool-card-category { background-color: rgba(249, 115, 22, 0.1); color: #f97316; }

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
    --spacing-3xl: 2rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .header-content {
    gap: var(--spacing-sm);
  }
  
  .nav-controls {
    gap: var(--spacing-sm);
  }
  
  .back-btn span {
    display: none;
  }
  
  .language-btn span {
    display: none;
  }
  
  .hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
  }
  
  .search-icon {
    margin-left: var(--spacing-md);
  }
  
  .search-input {
    padding: var(--spacing-md);
  }
  
  .categories-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
  }
  
  .category-card {
    padding: var(--spacing-lg);
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .tools-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .tool-header {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    text-align: center;
  }
  
  .tool-image-container {
    margin: 0 auto;
  }
  
  .tool-actions {
    justify-content: center;
  }
  
  .content-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  .tool-actions {
    flex-direction: column;
  }
  
  .btn {
    justify-content: center;
    width: 100%;
  }
  
  .social-links {
    justify-content: center;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

/* Accessibility */
@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;
  }
}

/* Focus styles for better accessibility */
button:focus,
input:focus,
a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border-primary: #000000;
    --color-text-secondary: #000000;
  }
  
  [data-theme="dark"] {
    --color-border-primary: #ffffff;
    --color-text-secondary: #ffffff;
  }
}