/* Design Tokens & Custom Properties */
:root {
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Modern Colors via OKLCH */
  --bg-primary: oklch(0.12 0.015 250);
  --bg-secondary: oklch(0.16 0.02 250);
  --bg-tertiary: oklch(0.2 0.02 250);
  
  --text-primary: oklch(0.95 0.01 250);
  --text-secondary: oklch(0.75 0.02 250);
  --text-muted: oklch(0.55 0.02 250);
  
  --accent-cyan: oklch(0.78 0.14 185);
  --accent-yellow: oklch(0.84 0.16 85);
  --accent-green: oklch(0.78 0.18 140);
  --accent-red: oklch(0.65 0.2 25);
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 255, 255, 0.25);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Background Glows */
.glow-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: -1;
}

.glow-bg {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  opacity: 0.25;
}

.glow-1 {
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 80%);
  top: -10%;
  right: -5%;
}

.glow-2 {
  background: radial-gradient(circle, var(--accent-yellow) 0%, transparent 80%);
  top: 40%;
  left: -10%;
}

/* Parallax Decorative Elements */
.parallax-element {
  position: absolute;
  pointer-events: none;
  z-index: -1;
  transition: transform 0.1s ease-out;
}


.parallax-shape-2 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, var(--accent-yellow) 0%, transparent 75%);
  opacity: 0.12;
  bottom: 5%;
  right: 38%;
  filter: blur(10px);
}

.parallax-shape-3 {
  width: 90px;
  height: 90px;
  border: 1.5px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.01);
  backdrop-filter: blur(2px);
  border-radius: 50%;
  top: 35%;
  right: 5%;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background-color: rgba(12, 17, 29, 0.7);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: translateY(-1px);
}

.git-icon {
  color: var(--accent-cyan);
}

.nav-links {
  display: flex;
  gap: 2rem;
  margin-left: auto;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

/* Language Switcher Selector */
.lang-selector {
  margin-left: 2rem;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  border-color: var(--border-focus);
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.05);
}

.flag-icon {
  font-size: 1.15rem;
  line-height: 1;
}

.github-btn {
  margin-left: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background-color: var(--accent-cyan);
  color: var(--bg-primary);
  border: none;
}

.btn-primary:hover {
  background-color: oklch(0.85 0.12 185);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(135, 230, 240, 0.25);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--border-focus);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.02);
}

/* Hero Section */
.hero-section {
  padding: 6rem 0;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.badge {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

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

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

/* Install Widget */
.install-widget {
  width: 100%;
  max-width: 520px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1rem;
}

.install-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.15);
}

.install-tab {
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-bottom: 2px solid transparent;
}

.install-tab.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
  background-color: var(--bg-secondary);
}

.install-cmd-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  gap: 1rem;
}

.install-cmd {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  flex: 1;
  min-width: 0;
}

.install-cmd::-webkit-scrollbar {
  display: none; /* Safari/Chrome */
}

.copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.05);
}

.tooltip {
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
}

.tooltip.visible {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* Terminal Mockup styling */
.hero-visual {
  width: 100%;
  margin-top: -3.5rem;
}

.terminal-window {
  background-color: #0b0f19;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 100%;
}

.terminal-header {
  background-color: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  position: relative;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background-color: #ef4444; }
.dot.yellow { background-color: #eab308; }
.dot.green { background-color: #22c55e; }

.terminal-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 1.25rem;
  font-size: 0.85rem;
  line-height: 1.5;
  height: 380px;
  overflow-y: auto;
  overflow-x: hidden;
  color: #c9d1d9;
}

.terminal-line {
  min-height: 1.25rem;
  white-space: pre-wrap;
}

.terminal-prompt {
  color: var(--accent-cyan);
  font-weight: bold;
}

/* Custom terminal font colors matching mgit script */
.text-cyan { color: var(--accent-cyan); }
.text-yellow { color: var(--accent-yellow); }
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-dim { color: var(--text-muted); }
.text-bold { font-weight: 600; }

/* Features Section */
.features-section {
  padding: 8rem 0;
  border-top: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.1);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 4rem auto;
}

.section-tagline {
  color: var(--accent-cyan);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.75rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

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

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

.feature-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2.5rem 2rem;
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast) ease-out, border-color var(--transition-fast), box-shadow var(--transition-fast);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.feature-card:hover {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  background-color: rgba(135, 230, 240, 0.05);
  border: 1px solid rgba(135, 230, 240, 0.1);
  color: var(--accent-cyan);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Interactive Sandbox / Demo Section */
.demo-section {
  padding: 8rem 0;
  border-top: 1px solid var(--border-color);
}

.demo-wrapper {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.demo-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.demo-tab {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.demo-tab:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--border-focus);
}

.demo-tab.active {
  border-color: var(--accent-cyan);
  background-color: rgba(135, 230, 240, 0.02);
  box-shadow: 0 0 15px rgba(135, 230, 240, 0.05);
}

.demo-cmd-name {
  display: block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.demo-tab.active .demo-cmd-name {
  color: var(--accent-cyan);
}

.demo-cmd-desc {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.demo-terminal {
  height: 440px;
}

.demo-terminal .terminal-body {
  height: 380px;
  overflow-y: auto;
}

/* typing cursor simulation */
.typing::after {
  content: "█";
  animation: blink 0.8s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {
  from, to { color: transparent }
  50% { color: var(--accent-cyan) }
}

/* Docs / Installation Guide Section */
.docs-section {
  padding: 8rem 0;
  border-top: 1px solid var(--border-color);
  background-color: rgba(0, 0, 0, 0.1);
}

.docs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.docs-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: var(--radius-md);
}

.docs-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.docs-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.platform-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.code-block-container {
  position: relative;
  margin-bottom: 1.5rem;
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.code-block-container pre {
  padding: 1rem 3.5rem 1rem 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.copy-btn-small {
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn-small:hover {
  color: var(--text-primary);
  background-color: rgba(255, 255, 255, 0.05);
}

.copy-btn-small.copied {
  background-color: rgba(34, 197, 94, 0.15);
  border-color: #22c55e;
  color: #22c55e;
}

/* Usage Card */
.usage-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem;
}

.usage-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.usage-card p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.usage-item {
  border-left: 2px solid var(--accent-cyan);
  padding-left: 1rem;
}

.usage-cmd {
  font-family: var(--font-mono);
  font-weight: bold;
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
}

.usage-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* FAQ Section */
.faq-section {
  padding: 8rem 0;
  border-top: 1px solid var(--border-color);
}

.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--border-focus);
}

.faq-item summary {
  font-weight: 600;
  font-size: 1.05rem;
  outline: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-answer {
  padding-top: 1rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Footer */
.site-footer {
  background-color: #0b0f19;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  margin-top: 4rem;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-visual {
    margin-top: 0;
  }
  
  .hero-content h1 {
    font-size: 2.75rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .demo-wrapper {
    grid-template-columns: 1fr;
  }
  
  .docs-grid {
    grid-template-columns: 1fr;
  }

  .hero-content, .hero-visual, .demo-controls, .demo-terminal, .docs-card, .usage-card {
    min-width: 0;
  }

  .parallax-element {
    display: none;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.5rem;
  }

  .site-header {
    padding: 0.75rem 0;
  }
  
  .nav-links {
    display: none; /* simple responsive header for landing page */
  }
  
  .lang-selector {
    margin-left: auto;
  }
  
  .github-btn {
    margin-left: 1rem;
  }
  
  .hero-section {
    padding: 3rem 0;
  }
  
  .hero-content h1 {
    font-size: 2.25rem;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .feature-card, .docs-card, .usage-card {
    padding: 1.75rem 1.5rem;
  }
  
  .demo-controls {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }
  
  .demo-tab {
    padding: 0.85rem 1rem;
  }
  
  .usage-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }
}

@media (max-width: 576px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .terminal-body {
    font-size: 0.75rem;
    padding: 0.75rem;
    height: 320px;
  }
  
  .demo-terminal {
    height: 380px;
  }
  
  .demo-terminal .terminal-body {
    height: 320px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .logo span {
    font-size: 1.25rem;
  }
  
  .lang-btn {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
  }
  
  .github-btn span {
    display: none;
  }
  
  .github-btn {
    padding: 0.5rem 0.75rem;
    margin-left: 0.5rem;
  }
  
  .hero-content h1 {
    font-size: 1.85rem;
  }
  
  .demo-controls {
    grid-template-columns: 1fr;
  }
  
  .terminal-body {
    font-size: 0.65rem;
  }

  .terminal-title {
    display: none;
  }
}