/* NovaType Official Website - Style System */

:root {
  /* Primary Colors */
  --nova-primary: #2563eb;
  --nova-primary-dark: #1d4ed8;
  --nova-primary-light: #3b82f6;

  /* Secondary Colors */
  --nova-secondary: #64748b;
  --nova-secondary-dark: #475569;
  --nova-secondary-light: #94a3b8;

  /* Accent Colors */
  --nova-accent: #059669;
  --nova-accent-light: #10b981;
  --nova-warning: #f59e0b;
  --nova-error: #ef4444;

  /* Neutrals */
  --nova-dark: #1e293b;
  --nova-darker: #0f172a;
  --nova-gray: #334155;
  --nova-light: #f1f5f9;
  --nova-lighter: #f8fafc;
  --nova-white: #ffffff;

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

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* 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);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--nova-dark);
  background: var(--nova-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--nova-darker);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--space-md);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--nova-light);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: var(--nova-darker);
  color: var(--nova-light);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

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

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
}

.section-alt {
  background: var(--nova-lighter);
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Flexbox */
.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--nova-light);
  padding: var(--space-md) 0;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--nova-darker);
}

.nav-logo svg {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

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

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

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--nova-white);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--nova-light);
    box-shadow: var(--shadow-lg);
  }
}

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

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

.btn-primary:hover {
  background: var(--nova-primary-dark);
  color: var(--nova-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--nova-light);
  color: var(--nova-dark);
}

.btn-secondary:hover {
  background: var(--nova-secondary-light);
  color: var(--nova-darker);
}

.btn-outline {
  background: transparent;
  color: var(--nova-primary);
  border: 2px solid var(--nova-primary);
}

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

.btn-ghost {
  background: transparent;
  color: var(--nova-gray);
}

.btn-ghost:hover {
  background: var(--nova-light);
  color: var(--nova-dark);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

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

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  background: linear-gradient(135deg, var(--nova-lighter) 0%, var(--nova-white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--nova-white);
  border: 1px solid var(--nova-light);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--nova-secondary);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--nova-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--nova-darker) 0%, var(--nova-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  color: var(--nova-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-code {
  margin-top: var(--space-2xl);
  background: var(--nova-darker);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: relative;
}

.hero-code::before {
  content: '';
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  display: flex;
  gap: var(--space-sm);
}

.hero-code .dots {
  display: flex;
  gap: 6px;
  margin-bottom: var(--space-md);
}

.hero-code .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.hero-code .dot:nth-child(1) { background: #ef4444; }
.hero-code .dot:nth-child(2) { background: #f59e0b; }
.hero-code .dot:nth-child(3) { background: #10b981; }

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }

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

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

.features-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.features-header h2 {
  margin-bottom: var(--space-md);
}

.features-header p {
  color: var(--nova-secondary);
  font-size: 1.125rem;
}

.feature-card {
  background: var(--nova-white);
  border: 1px solid var(--nova-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--nova-primary) 0%, var(--nova-primary-light) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--nova-white);
}

.feature-card h3 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  color: var(--nova-secondary);
  margin-bottom: 0;
}

/* Code Examples */
.code-example {
  background: var(--nova-darker);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-tabs {
  display: flex;
  background: var(--nova-dark);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-tab {
  padding: var(--space-md) var(--space-lg);
  color: var(--nova-secondary-light);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-fast);
}

.code-tab:hover,
.code-tab.active {
  color: var(--nova-white);
  background: var(--nova-darker);
}

.code-content {
  padding: var(--space-lg);
}

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

/* Syntax Highlighting */
.token-keyword { color: #c792ea; }
.token-function { color: #82aaff; }
.token-string { color: #c3e88d; }
.token-number { color: #f78c6c; }
.token-comment { color: #676e95; }
.token-operator { color: #89ddff; }
.token-property { color: #f07178; }
.token-punctuation { color: #89ddff; }

/* Comparison Table */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  background: var(--nova-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--nova-light);
}

.comparison-table th {
  background: var(--nova-darker);
  color: var(--nova-white);
  font-weight: 600;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background: var(--nova-lighter);
}

.check-icon {
  color: var(--nova-accent);
  font-weight: bold;
}

.cross-icon {
  color: var(--nova-secondary-light);
}

/* Demo Section */
.demo-section {
  background: var(--nova-darker);
  color: var(--nova-white);
  padding: var(--space-3xl) 0;
}

.demo-section h2 {
  color: var(--nova-white);
}

.demo-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.demo-editor {
  background: var(--nova-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.demo-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-editor-title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--nova-secondary-light);
}

.demo-editor textarea {
  width: 100%;
  min-height: 400px;
  padding: var(--space-lg);
  background: transparent;
  border: none;
  color: var(--nova-light);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  resize: none;
}

.demo-editor textarea:focus {
  outline: none;
}

.demo-preview {
  background: var(--nova-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.demo-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--nova-light);
  border-bottom: 1px solid var(--nova-light);
}

.demo-preview-content {
  padding: var(--space-xl);
  min-height: 400px;
  color: var(--nova-dark);
}

@media (max-width: 968px) {
  .demo-container {
    grid-template-columns: 1fr;
  }
}

/* Documentation */
.docs-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: var(--space-2xl);
  padding: var(--space-3xl) 0;
}

.docs-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.docs-nav {
  list-style: none;
}

.docs-nav-section {
  margin-bottom: var(--space-lg);
}

.docs-nav-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--nova-secondary);
  margin-bottom: var(--space-sm);
}

.docs-nav-link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--nova-gray);
  border-radius: var(--radius-sm);
  margin-bottom: 2px;
  transition: all var(--transition-fast);
}

.docs-nav-link:hover {
  background: var(--nova-light);
  color: var(--nova-dark);
}

.docs-nav-link.active {
  background: var(--nova-primary);
  color: var(--nova-white);
}

.docs-content {
  min-width: 0;
}

.docs-content h1 {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--nova-light);
}

.docs-content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.docs-content h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

@media (max-width: 968px) {
  .docs-layout {
    grid-template-columns: 1fr;
  }

  .docs-sidebar {
    position: static;
    border-bottom: 1px solid var(--nova-light);
    padding-bottom: var(--space-lg);
    margin-bottom: var(--space-lg);
  }
}

/* Cards */
.card {
  background: var(--nova-white);
  border: 1px solid var(--nova-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.card-icon {
  width: 40px;
  height: 40px;
  background: var(--nova-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--nova-primary);
}

/* Callouts */
.callout {
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
  border-left: 4px solid;
}

.callout-info {
  background: rgba(37, 99, 235, 0.1);
  border-color: var(--nova-primary);
}

.callout-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--nova-warning);
}

.callout-success {
  background: rgba(5, 150, 105, 0.1);
  border-color: var(--nova-accent);
}

.callout-title {
  font-weight: 600;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Footer */
.footer {
  background: var(--nova-darker);
  color: var(--nova-secondary-light);
  padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-brand p {
  margin-top: var(--space-md);
  color: var(--nova-secondary);
}

.footer-title {
  font-weight: 600;
  color: var(--nova-white);
  margin-bottom: var(--space-md);
}

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

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

.footer-links a {
  color: var(--nova-secondary-light);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--nova-secondary-light);
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--nova-primary);
  color: var(--nova-white);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

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

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

.animate-fade-in {
  animation: fadeIn 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--nova-primary); }
.text-secondary { color: var(--nova-secondary); }
.text-accent { color: var(--nova-accent); }
.text-muted { color: var(--nova-secondary-light); }

.bg-primary { background-color: var(--nova-primary); }
.bg-light { background-color: var(--nova-light); }
.bg-dark { background-color: var(--nova-dark); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-md); }
.mt-2 { margin-top: var(--space-xl); }
.mt-3 { margin-top: var(--space-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-md); }
.mb-2 { margin-bottom: var(--space-xl); }
.mb-3 { margin-bottom: var(--space-2xl); }

.py-1 { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-2 { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.py-3 { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }

.hidden { display: none; }
.visible { display: block; }

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--nova-light);
}

::-webkit-scrollbar-thumb {
  background: var(--nova-secondary-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--nova-secondary);
}