/* TOTP Native Website Styles */

/* CSS Custom Properties */
:root {
  /* Colors */
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --secondary: #8b5cf6;
  --secondary-dark: #7c3aed;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;
  
  /* Grays */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Monaco', 'Menlo', monospace;
  
  /* 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;
  
  /* 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);
  
  /* Borders */
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--gray-800);
  background-color: #ffffff;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--gray-900);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--gray-600);
}

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

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

code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background-color: var(--gray-100);
  padding: 0.125rem 0.25rem;
  border-radius: var(--border-radius-sm);
  color: var(--gray-800);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background-color: var(--gray-900);
  color: var(--gray-100);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  white-space: pre-wrap;
  word-break: break-word;
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: 1.125rem;
  color: var(--gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--border-radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--gray-700);
  border: 2px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--gray-700);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.copy-btn {
  background: var(--gray-100);
  color: var(--gray-600);
  border: 1px solid var(--gray-300);
  padding: 0.5rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.copy-btn:hover {
  background: var(--gray-200);
  color: var(--gray-700);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--gray-900);
}

.brand-icon {
  font-size: 1.5rem;
}

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

.nav-links a {
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--gray-900);
}

.nav-github {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gray-900);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.nav-github:hover {
  background: var(--gray-700);
  color: white;
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: calc(var(--header-height) + var(--spacing-3xl)) 0 var(--spacing-3xl);
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 600px;
}

.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

.install-section {
  background: white;
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-xl);
}

.install-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: var(--spacing-md);
}

.tab-btn {
  background: var(--gray-100);
  color: var(--gray-600);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

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

.install-code {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  background: var(--gray-900);
  color: var(--gray-100);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  font-family: var(--font-mono);
}

.install-code code {
  background: none;
  color: inherit;
  flex: 1;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-visual {
  animation: fadeInUp 0.6s ease-out 0.4s both;
}

.code-window {
  background: var(--gray-900);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.window-header {
  background: var(--gray-800);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
}

.window-controls {
  display: flex;
  gap: 0.5rem;
}

.control {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.control.red { background: #ff5f56; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #27ca3f; }

.window-title {
  color: var(--gray-400);
  font-size: 0.875rem;
}

.window-content {
  padding: var(--spacing-lg);
}

.window-content pre {
  margin: 0;
  background: none;
  padding: 0;
}

/* Features Section */
.features {
  padding: var(--spacing-3xl) 0;
}

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

.feature-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
  border: 1px solid var(--gray-200);
}

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

.feature-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  display: block;
}

.feature-card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.feature-card p {
  color: var(--gray-600);
  margin: 0;
}

/* Demo Section */
.demo {
  padding: var(--spacing-3xl) 0;
  background: var(--gray-50);
}

.demo-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-top: var(--spacing-xl);
}

.demo-config,
.demo-output {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
}

.demo-config h3,
.demo-output h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--gray-900);
}

.config-group {
  margin-bottom: var(--spacing-lg);
}

.config-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--gray-700);
}

.config-group input,
.config-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.config-group input:focus,
.config-group select:focus {
  outline: none;
  border-color: var(--primary);
}

.config-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.token-display {
  background: var(--gray-50);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.token-value {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.1em;
}

.token-countdown {
  margin-bottom: var(--spacing-md);
}

.countdown-text {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin-bottom: 0.5rem;
}

.countdown-bar {
  background: var(--gray-200);
  height: 4px;
  border-radius: 2px;
  overflow: hidden;
}

.countdown-progress {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  height: 100%;
  transition: width var(--transition-normal);
}

.demo-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.qr-display {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--gray-50);
  border-radius: var(--border-radius-lg);
}

.qr-display h4 {
  margin-bottom: var(--spacing-md);
}

.qr-uri {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gray-600);
  background: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-top: var(--spacing-md);
  word-break: break-all;
}

/* Examples Section */
.examples {
  padding: var(--spacing-3xl) 0;
}

.examples-tabs {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.examples-content {
  max-width: 800px;
  margin: 0 auto;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Performance Section */
.performance {
  padding: var(--spacing-3xl) 0;
  background: var(--gray-50);
}

.performance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.perf-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
}

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

.perf-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.perf-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.perf-label {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.perf-desc {
  color: var(--gray-600);
  font-size: 0.875rem;
}

.benchmark-section {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
}

.benchmark-section h3 {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

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

.benchmark-card {
  padding: var(--spacing-lg);
  border: 2px solid var(--gray-200);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-normal);
}

.benchmark-card:hover {
  border-color: var(--primary);
}

.benchmark-card h4 {
  margin-bottom: var(--spacing-md);
  color: var(--gray-900);
}

.benchmark-metrics {
  margin-bottom: var(--spacing-md);
}

.metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.metric-label {
  color: var(--gray-600);
}

.metric-value {
  font-weight: 600;
  color: var(--gray-900);
  font-family: var(--font-mono);
}

.metric-unit {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-left: 0.25rem;
}

.benchmark-bar {
  background: var(--gray-200);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}

.benchmark-fill {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  height: 100%;
  transition: width var(--transition-slow);
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .brand-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

.footer-brand .brand-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--spacing-md);
  display: block;
}

.footer-brand p {
  color: var(--gray-400);
  margin: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

.footer-section a {
  display: block;
  color: var(--gray-400);
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: white;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--gray-700);
  color: var(--gray-500);
}

.footer-bottom p {
  margin: 0.25rem 0;
}

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

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

/* Responsive Design */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .demo-container {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-3xl: 2rem;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.875rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .config-row {
    grid-template-columns: 1fr;
  }
  
  .demo-actions {
    flex-direction: column;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .examples-tabs {
    flex-direction: column;
    align-items: center;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .token-value {
    font-size: 2rem;
  }
  
  .performance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  pre {
    font-size: 0.75rem;
    padding: var(--spacing-md);
  }
  
  .benchmark-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .performance-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  pre {
    font-size: 0.7rem;
    padding: var(--spacing-sm);
    line-height: 1.3;
  }
}

/* Print styles */
@media print {
  .navbar,
  .demo,
  .footer {
    display: none;
  }
  
  .hero {
    padding-top: var(--spacing-xl);
  }
  
  * {
    color: black !important;
    background: white !important;
  }
}