@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
  --color-primary: #6366f1;
  --color-secondary: #f8fafc;
  --color-accent: #10b981;
  --color-syntax-cyan: #22d3ee;
  --color-syntax-pink: #f472b6;
  --color-syntax-yellow: #fbbf24;
  --color-text: #1a1a1a;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f9fafb;
  --color-sidebar: #0f172a;

  --font-family: 'Space Grotesk', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.6;

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

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);

  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

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

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  min-width: 44px;
  min-height: 44px;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-accent:hover {
  background-color: #0d9668;
  transform: scale(1.05);
}

.sidebar-nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background-color: var(--color-sidebar);
  color: #ffffff;
  padding: var(--space-xl) var(--space-lg);
  z-index: 1000;
  transition: transform var(--transition-base);
}

.main-content {
  margin-left: 280px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: #94a3b8;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xs);
  font-weight: 500;
}

.nav-link:hover, .nav-link.active {
  background-color: rgba(99, 102, 241, 0.1);
  color: var(--color-syntax-cyan);
}

.nav-link::before {
  content: '>';
  margin-right: 0.5rem;
  color: var(--color-syntax-pink);
  opacity: 0;
  transition: var(--transition-fast);
}

.nav-link:hover::before, .nav-link.active::before {
  opacity: 1;
}

.section {
  padding: var(--space-2xl) 0;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  height: 100%;
  border: 1px solid #e5e7eb;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.code-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background-color: #f1f5f9;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-size: 0.875rem;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

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

.hero-image-container {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-image-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(99, 102, 241, 0.2), transparent);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
}

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

.footer {
  background-color: var(--color-sidebar);
  color: #f8fafc;
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: auto;
}

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

.footer-legal {
  border-top: 1px solid #334155;
  padding-top: var(--space-lg);
  font-size: 0.875rem;
  color: #94a3b8;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.hamburger {
  position: relative;
  width: 24px;
  height: 2px;
  background: #ffffff;
  margin: 0 auto;
}

.hamburger::before, .hamburger::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background: #ffffff;
  left: 0;
  transition: var(--transition-base);
}

.hamburger::before { top: -8px; }
.hamburger::after { bottom: -8px; }

.mobile-nav-toggle.active .hamburger { background: transparent; }
.mobile-nav-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
.mobile-nav-toggle.active .hamburger::after { transform: rotate(-45deg); bottom: 0; }

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #ffffff;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.1);
  padding: var(--space-md) 0;
  z-index: 3000;
  transform: translateY(100%);
  transition: transform var(--transition-slow);
}

.cookie-banner.show {
  transform: translateY(0);
}

.cookie-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #d1d5db;
  border-radius: var(--radius-md);
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.accordion-item {
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
}

.accordion-header {
  padding: var(--space-md);
  background: #ffffff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.accordion-header:hover {
  background: var(--color-bg-alt);
}

.accordion-content {
  padding: 0 var(--space-md);
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}

.accordion-item.active .accordion-content {
  padding: var(--space-md);
  max-height: 1000px;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .sidebar-nav {
    transform: translateX(-100%);
    width: 100%;
  }

  .sidebar-nav.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .mobile-nav-toggle {
    display: block;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

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

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

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

  .cookie-container {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
}

@media (max-width: 320px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .btn {
    width: 100%;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: 8px;
  z-index: 100;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

.syntax-highlighter {
  background: #1e293b;
  color: #f8fafc;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.875rem;
  margin-top: var(--space-md);
}

.syntax-keyword { color: var(--color-syntax-pink); }
.syntax-string { color: var(--color-syntax-yellow); }
.syntax-function { color: var(--color-syntax-cyan); }
.syntax-comment { color: #64748b; }