:root {
  --color-bg: #F5F0E8;
  --color-surface: #EDE8DF;
  --color-bg-dark: #1A1612;
  --color-text-main: #1A1612;
  --color-text-muted: #6B5F4E;
  --color-text-light: #9C9488;
  --color-accent: #D97757;
  --color-accent-hover: #C4673A;
  --color-border: rgba(120, 100, 75, 0.15);
  --color-white: #FAFAF8;

  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  
  --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.7;
  position: relative;
  overflow-x: hidden;
}

html.js body {
  visibility: hidden;
}

/* Subtle noise overlay */
.noise-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.2;
}

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

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

.copy-btn:focus-visible {
  outline-color: var(--color-white);
}

img, svg {
  max-width: 100%;
  display: block;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-padding {
  padding: clamp(60px, 8vw, 120px) 0;
}

/* Utility */
.surface-bg { background-color: var(--color-surface); }
.dark-bg { background-color: var(--color-bg-dark); color: var(--color-white); }
.text-center { text-align: center; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-text-muted);
}

/* Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 240, 232, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
}

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

.logo {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo-dot {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav-link:hover {
  color: var(--color-text-main);
}

.nav-icon {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
}

.nav-icon:hover {
  color: var(--color-text-main);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  position: relative;
  padding: 2px;
  border-radius: 999px;
  background: rgba(237, 232, 223, 0.36);
  border: 1px solid rgba(120, 100, 75, 0.16);
  box-shadow: inset 0 1px 0 rgba(250, 250, 248, 0.62);
}

html.no-js .lang-toggle {
  display: none;
}

.lang-option {
  width: 48px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  font-family: var(--font-body);
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 1;
  border-radius: 999px;
  color: var(--color-text-light);
  transition: color var(--transition), background-color var(--transition);
}

.lang-option:hover {
  color: var(--color-text-main);
  background-color: rgba(237, 232, 223, 0.42);
}

.lang-option[aria-checked="true"] {
  color: var(--color-text-main);
}

.lang-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 48px;
  height: calc(100% - 4px);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(250, 250, 248, 0.96), rgba(237, 232, 223, 0.96));
  border: 1px solid rgba(120, 100, 75, 0.15);
  transition: transform var(--transition);
  z-index: 0;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(26, 22, 18, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.66);
}

.lang-toggle[data-active="en"] .lang-slider {
  transform: translateX(100%);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-main);
  cursor: pointer;
}

/* Hero */
.hero {
  padding: clamp(80px, 12vw, 160px) 0 clamp(60px, 8vw, 120px);
}

.hero-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 800px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  max-width: 650px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-bottom: 4rem;
}

/* Terminal Window */
.terminal-window {
  width: 100%;
  background-color: var(--color-bg-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.terminal-header {
  background-color: rgba(255, 255, 255, 0.05);
  padding: 12px 16px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.dot-red { background-color: #FF5F56; }
.dot-yellow { background-color: #FFBD2E; }
.dot-green { background-color: #27C93F; }

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--color-white);
  overflow-x: auto;
}

.terminal-body .line {
  margin-bottom: 0.25rem;
}

.terminal-body .muted { color: var(--color-text-light); }
.terminal-body .success { color: #A7C080; }
.terminal-body .json { color: #D3C6AA; }
.terminal-body .string { color: #E69875; }
.terminal-body .cmd { color: #A7C080; }
.terminal-body .subcmd { color: #D3C6AA; }
.terminal-body .flag { color: #7FBBB3; }
.terminal-body .prompt { color: #83C092; margin-right: 0.5rem; }

#hero-terminal .type-line {
  min-height: 1.5em;
  position: relative;
}
#hero-terminal .type-line::after {
  content: "_";
  animation: blink 1s step-end infinite;
}
#hero-terminal .type-line.done::after {
  display: none;
}
#hero-terminal .result-lines {
  display: none;
}
#hero-terminal .result-lines.visible {
  display: block;
}

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

/* Sections General */
.section-header {
  margin-bottom: 4rem;
  text-align: center;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

.dark-title {
  color: var(--color-white);
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.features-grid .feature-card:nth-child(4),
.features-grid .feature-card:nth-child(5) {
  grid-column: span 1;
}

.features-grid .feature-card:nth-child(4) {
  grid-column-start: 1;
}

.feature-card {
  background: var(--color-white);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), opacity 0.6s ease-out;
}

html.js .feature-card {
  opacity: 0;
  transform: translateY(15px);
}

html.js .features-grid.visible .feature-card {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--radius-sm);
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  font-family: var(--font-body);
}

.feature-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* How It Works */
.steps-flow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.step-card {
  flex: 1;
  background: var(--color-white);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  position: relative;
  z-index: 1;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

html.js .step-card {
  opacity: 0;
  transform: translateY(15px);
}

html.js .steps-flow.visible .step-card {
  opacity: 1;
  transform: translateY(0);
}

.step-number {
  width: 32px;
  height: 32px;
  background: var(--color-text-main);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-family: var(--font-mono);
  margin-bottom: 1.5rem;
}

.step-title {
  font-size: 1.25rem;
  font-family: var(--font-body);
  margin-bottom: 1rem;
}

.step-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.step-code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--color-surface);
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
  word-break: break-all;
}

.step-connector {
  color: var(--color-text-light);
  width: 40px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  transition: opacity 0.6s ease-out;
}

html.js .step-connector {
  opacity: 0;
}

html.js .steps-flow.visible .step-connector {
  opacity: 1;
}

/* Quick Start */
.qs-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.qs-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

html.js .qs-card {
  opacity: 0;
  transform: translateY(15px);
}

html.js .qs-grid.visible .qs-card {
  opacity: 1;
  transform: translateY(0);
}

.qs-title {
  font-family: var(--font-body);
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.code-block-container {
  position: relative;
  background: var(--color-bg-dark);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.code-block {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-white);
  overflow-x: auto;
}

.copy-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,0.1);
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 4px;
  padding: 4px 10px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-body);
}

.copy-btn:hover {
  background: rgba(255,255,255,0.2);
}

/* Footer */
.footer {
  background: var(--color-surface);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--color-border);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-logo {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.footer-desc {
  color: var(--color-text-muted);
  max-width: 300px;
}

.footer-right {
  display: flex;
  gap: 2rem;
}

.footer-link {
  color: var(--color-text-main);
  font-weight: 500;
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  color: var(--color-text-light);
  font-size: 0.9rem;
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Animations — only when JS is available */
html.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

html.js .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html.js .reveal,
  html.js .reveal.visible {
    transition: none;
    opacity: 1;
    transform: none;
  }
  html.js .feature-card,
  html.js .features-grid.visible .feature-card {
    transition: none;
    opacity: 1;
    transform: none;
  }
  html.js .step-card,
  html.js .steps-flow.visible .step-card {
    transition: none;
    opacity: 1;
    transform: none;
  }
  html.js .step-connector,
  html.js .steps-flow.visible .step-connector {
    transition: none;
    opacity: 1;
  }
  html.js .qs-card,
  html.js .qs-grid.visible .qs-card {
    transition: none;
    opacity: 1;
    transform: none;
  }
  .lang-slider {
    transition: none;
  }
  html {
    scroll-behavior: auto;
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid .feature-card:nth-child(4) {
    grid-column: auto;
  }
  .features-grid .feature-card:nth-child(5) {
    grid-column: span 2;
  }
  
  .steps-flow {
    flex-direction: column;
  }
  
  .step-connector {
    transform: rotate(90deg);
    margin: 1rem 0;
  }
}

@media (max-width: 768px) {
  html.js .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-bg);
    flex-direction: column;
    padding: 2rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
  }

  html.js .nav-links.active {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }

  html.js .menu-toggle {
    display: block;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid .feature-card:nth-child(5) {
    grid-column: auto;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
  }

  .lang-toggle {
    align-self: center;
  }

  .footer-container {
    flex-direction: column;
  }
  
  .footer-right {
    flex-direction: column;
    gap: 1rem;
  }
}