/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Dark Theme with Teal Accents */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  
  /* Glass morphism */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  
  /* Deep Teal Color Scheme */
  --deep-teal: #008080;
  --teal-light: #20b2aa;
  --teal-dark: #006666;
  --teal-glow: rgba(0, 128, 128, 0.3);
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #008080 0%, #20b2aa 100%);
  --gradient-secondary: linear-gradient(135deg, #20b2aa 0%, #40e0d0 100%);
  --gradient-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-accent: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-text: linear-gradient(135deg, #008080 0%, #20b2aa 50%, #40e0d0 100%);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #e5e5e5;
  --text-muted: #999999;
  --text-dim: #666666;
  
  /* Accent Colors */
  --accent-primary: #008080;
  --accent-secondary: #20b2aa;
  --accent-success: #43e97b;
  --accent-warning: #ffa726;
  --accent-error: #ef5350;
  
  /* Border Colors */
  --border-primary: rgba(255, 255, 255, 0.1);
  --border-secondary: rgba(255, 255, 255, 0.2);
  --border-hover: rgba(0, 128, 128, 0.5);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --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;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 800ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base typography */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Animated Background */
.bg-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  background: radial-gradient(ellipse at center, rgba(0, 128, 128, 0.03) 0%, transparent 70%);
}

.neural-network {
  position: absolute;
  width: 100%;
  height: 100%;
}

.node {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--deep-teal);
  border-radius: 50%;
  opacity: 0.8;
  animation: neuralPulse 4s ease-in-out infinite;
  box-shadow: 0 0 10px var(--teal-glow);
}

.node:nth-child(1) {
  top: 15%;
  left: 8%;
  animation-delay: 0s;
}

.node:nth-child(2) {
  top: 35%;
  left: 85%;
  animation-delay: 1s;
}

.node:nth-child(3) {
  top: 65%;
  left: 25%;
  animation-delay: 2s;
}

.node:nth-child(4) {
  top: 25%;
  left: 55%;
  animation-delay: 1.5s;
}

.node:nth-child(5) {
  top: 75%;
  left: 75%;
  animation-delay: 0.5s;
}

/* Add more nodes for richer network */
.node:nth-child(6) {
  top: 50%;
  left: 15%;
  animation-delay: 3s;
}

.node:nth-child(7) {
  top: 85%;
  left: 45%;
  animation-delay: 2.5s;
}

.node:nth-child(8) {
  top: 10%;
  left: 70%;
  animation-delay: 1.8s;
}

.connection {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0, 128, 128, 0.6), transparent);
  opacity: 0.4;
  animation: neuralFlow 6s ease-in-out infinite;
  border-radius: 1px;
}

.connection:nth-child(6) {
  top: 20%;
  left: 8%;
  width: 250px;
  transform: rotate(45deg);
}

.connection:nth-child(7) {
  top: 45%;
  left: 35%;
  width: 180px;
  transform: rotate(-30deg);
  animation-delay: 2s;
}

.connection:nth-child(8) {
  top: 70%;
  left: 25%;
  width: 220px;
  transform: rotate(60deg);
  animation-delay: 1s;
}

/* Add more connections */
.connection:nth-child(9) {
  top: 30%;
  left: 55%;
  width: 160px;
  transform: rotate(15deg);
  animation-delay: 3s;
}

.connection:nth-child(10) {
  top: 60%;
  left: 60%;
  width: 140px;
  transform: rotate(-45deg);
  animation-delay: 4s;
}

.floating-particles {
  position: absolute;
  width: 100%;
  height: 100%;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--teal-light);
  border-radius: 50%;
  opacity: 0.6;
  animation: particleFloat 25s linear infinite;
  box-shadow: 0 0 6px rgba(32, 178, 170, 0.5);
}

.particle:nth-child(1) {
  top: 5%;
  left: 15%;
  animation-delay: 0s;
}

.particle:nth-child(2) {
  top: 55%;
  left: 85%;
  animation-delay: 5s;
}

.particle:nth-child(3) {
  top: 25%;
  left: 45%;
  animation-delay: 10s;
}

.particle:nth-child(4) {
  top: 75%;
  left: 5%;
  animation-delay: 15s;
}

.particle:nth-child(5) {
  top: 45%;
  left: 95%;
  animation-delay: 8s;
}

/* Add more particles */
.particle:nth-child(6) {
  top: 90%;
  left: 30%;
  animation-delay: 12s;
}

.particle:nth-child(7) {
  top: 15%;
  left: 75%;
  animation-delay: 18s;
}

.particle:nth-child(8) {
  top: 65%;
  left: 60%;
  animation-delay: 22s;
}

@keyframes neuralPulse {
  0%, 100% {
    opacity: 0.8;
    transform: scale(1);
    box-shadow: 0 0 10px var(--teal-glow);
  }
  50% {
    opacity: 1;
    transform: scale(1.8);
    box-shadow: 0 0 20px rgba(0, 128, 128, 0.8);
  }
}

@keyframes neuralFlow {
  0%, 100% {
    opacity: 0.4;
    background: linear-gradient(90deg, transparent, rgba(0, 128, 128, 0.6), transparent);
  }
  50% {
    opacity: 0.9;
    background: linear-gradient(90deg, transparent, rgba(32, 178, 170, 0.9), transparent);
  }
}

@keyframes particleFloat {
  0% {
    transform: translateY(0px) translateX(0px);
    opacity: 0.6;
  }
  25% {
    transform: translateY(-30px) translateX(15px);
    opacity: 0.8;
  }
  50% {
    transform: translateY(-15px) translateX(-10px);
    opacity: 1;
  }
  75% {
    transform: translateY(20px) translateX(8px);
    opacity: 0.7;
  }
  100% {
    transform: translateY(0px) translateX(0px);
    opacity: 0.6;
  }
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  position: relative;
  z-index: 1;
}

/* Glass Morphism Effect */
.glass-morphism {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-morphism::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 128, 128, 0.1), transparent);
  transition: all var(--transition-slow);
}

.glass-morphism:hover::before {
  left: 100%;
}

.glass-morphism:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-secondary);
  transform: translateY(-4px);
  box-shadow: 
    var(--glass-shadow),
    0 20px 40px var(--teal-glow);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-primary);
  transition: all var(--transition-normal);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  color: white;
}

/* Navigation */
nav {
  display: none;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-8);
  margin: 0;
  padding: 0;
}

nav a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

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

/* Mobile Menu */
#mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

#mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
  border-radius: 1px;
}

#mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

#mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

#mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 0 var(--space-20);
  position: relative;
}

.hero-content {
  text-align: center;
  margin-bottom: var(--space-16);
}

.hero-title {
  font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-6xl));
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-8);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient-text);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-shift 6s ease infinite;
}

.neon-text {
  color: var(--teal-light);
  text-shadow: 0 0 20px var(--teal-glow);
}

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

/* Hero Tools */
.hero-tools {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  max-width: 1400px;
  margin: 0 auto;
}

.input-section,
.output-section {
  padding: var(--space-8);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.section-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
}

.char-counter {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  font-weight: 500;
}

.char-counter.warning {
  color: var(--accent-warning);
}

.char-counter.error {
  color: var(--accent-error);
}

.text-input-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

#text-input {
  width: 100%;
  min-height: 200px;
  padding: var(--space-5);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: 1.6;
  resize: vertical;
  transition: all var(--transition-normal);
}

#text-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 30px var(--teal-glow);
}

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

.input-controls {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.mode-selector {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.mode-selector label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.mode-select {
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
  min-width: 160px;
}

/* Buttons */
.secondary-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.primary-btn {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: var(--radius-xl);
  background: var(--gradient-primary);
  color: white;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.neon-btn {
  box-shadow: 0 0 20px var(--teal-glow);
}

.neon-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px var(--teal-glow);
}

.btn-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  position: relative;
  z-index: 2;
}

.btn-glow {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: all var(--transition-slow);
}

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

.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: none;
}

.primary-btn.loading .loading-spinner {
  display: block;
}

.primary-btn.loading .btn-text {
  display: none;
}

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

.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--gradient-secondary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 2px 8px rgba(32, 178, 170, 0.3);
}

.copy-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(32, 178, 170, 0.4);
}

.copy-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Output Section */
.output-section {

   position: relative;
}
.output-section .copy-btn {
  position: absolute;
  top: 1rem;    /* adjust vertical offset */
  right: 1rem;  /* adjust horizontal offset */
  z-index: 1;
}
.output-content-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.output-area-wrapper {
  position: relative;
  flex: 1;
  min-height: 300px;
}

.output-area {
  width: 100%;
  height: 100%;
  padding: var(--space-5);
  border: 2px dashed var(--border-primary);
  border-radius: var(--radius-xl);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-secondary);
  overflow-y: auto;
  transition: all var(--transition-normal);
}

.output-area.has-content {
  border-style: solid;
  border-color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

.output-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-muted);
}

.placeholder-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
  color: var(--text-dim);
}

.output-placeholder p {
  font-size: var(--font-size-lg);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.output-placeholder small {
  font-size: var(--font-size-sm);
  color: var(--text-dim);
}

/* Loading Animation */
.loading-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--space-4);
}

.neural-loader {
  position: relative;
  width: 60px;
  height: 60px;
}

.loader-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 12px;
  height: 12px;
  background: var(--deep-teal);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: pulse 2s ease-in-out infinite;
}

.loader-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 2px solid transparent;
  border-top: 2px solid var(--teal-light);
  border-radius: 50%;
  animation: spin 1.5s linear infinite;
}

.loader-particles {
  position: absolute;
  width: 100%;
  height: 100%;
}

.loader-particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--teal-light);
  border-radius: 50%;
  animation: orbit 3s linear infinite;
}

.loader-particle:nth-child(1) {
  animation-delay: 0s;
}

.loader-particle:nth-child(2) {
  animation-delay: 1s;
}

.loader-particle:nth-child(3) {
  animation-delay: 2s;
}

@keyframes orbit {
  0% {
    transform: rotate(0deg) translateX(30px) rotate(0deg);
  }
  100% {
    transform: rotate(360deg) translateX(30px) rotate(-360deg);
  }
}

.loading-text {
  color: var(--text-secondary);
  font-weight: 500;
}

.hidden {
  display: none !important;
}

/* Feature Sections */
.feature-section {
  padding: var(--space-20) 0;
}

.alt-bg {
  background: rgba(255, 255, 255, 0.02);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(var(--font-size-3xl), 4vw, var(--font-size-5xl));
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Benefits Grid */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.benefit-card {
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-normal);
}

.benefit-card:hover {
  transform: translateY(-6px);
}

.benefit-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: rgba(0, 128, 128, 0.1);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  margin: 0 auto var(--space-6);
  color: var(--accent-primary);
  transition: all var(--transition-normal);
}

.benefit-card:hover .benefit-icon {
  background: rgba(0, 128, 128, 0.2);
  transform: scale(1.1);
}

.benefit-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.benefit-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Steps Container */
.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

.step {
  text-align: center;
  padding: var(--space-8);
  transition: all var(--transition-normal);
}

.step:hover {
  transform: translateY(-6px);
}

.step-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.step-number {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 32px;
  height: 32px;
  background: var(--gradient-secondary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  z-index: 2;
}

.step-icon-bg {
  width: 64px;
  height: 64px;
  background: rgba(0, 128, 128, 0.1);
  border: 1px solid var(--border-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  color: var(--accent-primary);
  transition: all var(--transition-normal);
}

.step:hover .step-icon-bg {
  background: rgba(0, 128, 128, 0.2);
  transform: scale(1.1);
}

.step h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.step p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.feature-card {
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-6px);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: rgba(0, 128, 128, 0.1);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  margin: 0 auto var(--space-6);
  color: var(--accent-primary);
  transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
  background: rgba(0, 128, 128, 0.2);
  transform: scale(1.1);
}

.feature-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.feature-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--space-4);
  overflow: hidden;
  transition: all var(--transition-normal);
}

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

.faq-item.active {
  border-color: var(--accent-primary);
}

.faq-question {
  width: 100%;
  padding: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  background: none;
  border: none;
  text-align: left;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  background: rgba(255, 255, 255, 0.02);
}

.faq-question h3 {
  margin: 0;
  font-size: var(--font-size-lg);
}

.faq-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(0, 128, 128, 0.1);
  border-radius: 50%;
  color: var(--accent-primary);
  transition: all var(--transition-normal);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition-normal);
  padding: 0 var(--space-6);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 var(--space-6) var(--space-6);
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.6;
  padding-top: var(--space-2);
}

/* Footer */
footer {
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-primary);
  padding: var(--space-12) 0 var(--space-8);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-8);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-brand .logo {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

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

.footer-links nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-primary);
  padding-top: var(--space-6);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* Responsive Design */
@media (min-width: 768px) {
  nav {
    display: block;
  }

  #mobile-menu-btn {
    display: none;
  }
}

@media (max-width: 1024px) {
  .hero-tools {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    max-width: 800px;
  }

  .benefits-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 100px 0 var(--space-16);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .input-section,
  .output-section {
    padding: var(--space-6);
  }

  .input-controls {
    flex-direction: column;
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }

  .steps-container {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links nav {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .input-section,
  .output-section {
    padding: var(--space-4);
  }

  #text-input {
    min-height: 180px;
  }
}

/* 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;
  }

  .node,
  .connection,
  .particle {
    animation: none;
  }
}