/**
 * Copilot Modern Theme for peek
 * 
 * A contemporary design system featuring gradient aesthetics, smooth animations,
 * and automatic dark/light mode adaptation.
 * 
 * Generated by: GitHub Copilot/Claud Sonnet 4.5
 * Version: 1.1.4
 * Date: November 3, 2025
 * 
 * Features:
 * - Responsive design with mobile-first approach
 * - CSS custom properties for easy theming
 * - Smooth transitions and animations
 * - Automatic dark mode support via prefers-color-scheme
 * - Modern gradient color palette (Purple & Teal)
 * 
 * @author GitHub Copilot/Claud Sonnet 4.5
 * @license MIT
 */

/* CSS Variables */
:root {
  /* Colors - Light Mode */
  --color-bg: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;

  /* Brand Colors */
  --color-primary: #7c3aed;
  --color-primary-dark: #6d28d9;
  --color-secondary: #14b8a6;
  --color-accent: #ec4899;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #14b8a6 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(124, 58, 237, 0.05) 0%, rgba(20, 184, 166, 0.05) 100%);
  --gradient-hero: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.3);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0a0a0b;
    --color-bg-secondary: #131316;
    --color-bg-tertiary: #1a1a1e;
    --color-text: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #64748b;
    --color-border: #27272a;
    --color-border-light: #1f1f23;
    --gradient-hero: linear-gradient(180deg, #0a0a0b 0%, #131316 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
  }
}

.logo {
  width: 36px;
  height: 36px;
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all 0.3s ease;
  padding: 0 20px;
}

@media (prefers-color-scheme: dark) {
  .nav {
    background: rgba(10, 10, 11, 0.8);
  }
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-md) 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
}

.brand svg {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.brand:hover svg {
  transform: scale(1.05) rotate(3deg);
}

.brand-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.03em;
}

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

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.938rem;
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.938rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.btn-large {
  padding: 0.875rem 2rem;
  font-size: 1.063rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-outline {
  border: 2px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-bg);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--gradient-subtle);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.08), transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.08), transparent 70%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Demo Window */
.hero-demo {
  margin-top: var(--spacing-xl);
}

.demo-window {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.window-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
}

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

.window-controls span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
}

.window-controls span:nth-child(1) {
  background: #ff5f57;
}

.window-controls span:nth-child(2) {
  background: #febc2e;
}

.window-controls span:nth-child(3) {
  background: #28c840;
}

.window-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.demo-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.demo-request {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.request-line {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.method {
  font-weight: 700;
  color: var(--color-secondary);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.url {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text);
}

.status {
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-mono);
}

.status-success {
  background: rgba(20, 184, 166, 0.1);
  color: var(--color-secondary);
}

.request-details {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-left: var(--spacing-md);
}

.detail-row {
  display: flex;
  gap: var(--spacing-sm);
  font-size: 0.875rem;
  font-family: var(--font-mono);
}

.detail-row .label {
  color: var(--color-text-muted);
}

.detail-row .value {
  color: var(--color-text-secondary);
}

.demo-response {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.demo-response pre {
  margin: 0;
  padding: var(--spacing-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text);
}

.demo-response code {
  font-family: inherit;
}

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

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

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* CLI Section */
.cli-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-secondary);
}

.cli-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.section-label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--gradient-subtle);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

.cli-content h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.cli-content p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.cli-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.cli-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.cli-feature svg {
  color: var(--color-secondary);
  flex-shrink: 0;
}

/* Terminal */
.cli-terminal {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
}

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

.terminal-controls span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
}

.terminal-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

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

.terminal-content pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text);
}

.terminal-content code {
  font-family: inherit;
}

.prompt {
  color: var(--color-primary);
  font-weight: 700;
}

.comment {
  color: var(--color-text-muted);
  font-style: italic;
}

.output {
  color: var(--color-secondary);
}

/* Download Section */
.download-section {
  padding: var(--spacing-3xl) 0;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.download-card {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.download-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.download-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.download-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

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

.download-card .btn {
  width: 100%;
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.download-meta {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.download-alt {
  text-align: center;
  margin-top: var(--spacing-xl);
  color: var(--color-text-secondary);
}

.download-alt a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
}

.download-alt a:hover {
  text-decoration: underline;
}

/* CTA Section */
.cta-section {
  padding: var(--spacing-3xl) 0;
  background: var(--gradient-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.cta-content {
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.cta-content p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

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

.footer-tagline {
  color: var(--color-text-secondary);
  font-size: 0.938rem;
}

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

.footer-column h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.footer-column a {
  display: block;
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.938rem;
  padding: 0.375rem 0;
  transition: color 0.2s ease;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer-bottom a {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all 0.2s ease;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
  .cli-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }

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

  .nav-links {
    order: 3;
    width: 100%;
    justify-content: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
  }

  .hero {
    padding: var(--spacing-2xl) 0;
  }

  .hero-ctas {
    flex-direction: column;
  }

  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
  }

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

  .footer-links {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .request-line {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

.hero .container > * {
  animation: fadeIn 0.6s ease-out backwards;
}

.hero .container > *:nth-child(1) {
  animation-delay: 0.1s;
}

.hero .container > *:nth-child(2) {
  animation-delay: 0.2s;
}

.hero .container > *:nth-child(3) {
  animation-delay: 0.3s;
}

.hero .container > *:nth-child(4) {
  animation-delay: 0.4s;
}

.hero .container > *:nth-child(5) {
  animation-delay: 0.5s;
}