:root {
  --bg-base: #07070a;
  --bg-surface: rgba(19, 19, 26, 0.6);
  --bg-surface-solid: #13131a;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(79, 70, 229, 0.6);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --color-primary: #4f46e5;
  --color-primary-glow: rgba(79, 70, 229, 0.25);
  --color-accent: #06b6d4;
  --color-accent-glow: rgba(6, 182, 212, 0.2);
  --color-success: #10b981;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Radial Ambient Background Glows */
body::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
  z-index: -1;
  pointer-events: none;
  filter: blur(80px);
}

body::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -10%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 75%);
  z-index: -1;
  pointer-events: none;
  filter: blur(100px);
}

/* Container & Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header Navbar */
header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(7, 7, 10, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: white;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.badge-status {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--color-success);
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-success);
  border-radius: 50%;
  animation: pulse 1.8s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.6; }
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 40%, #e2e8f0 70%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 36px;
  font-weight: 300;
}

/* Main CTA Button */
.cta-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #3b32b3 100%);
  color: white;
  text-decoration: none;
  padding: 16px 36px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(79, 70, 229, 0.45);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-download:active {
  transform: translateY(0);
}

.btn-download svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.release-meta {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Glassmorphic Grid Panels */
.grid-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-bottom: 80px;
}

.feature-card {
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: var(--transition-smooth);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(79, 70, 229, 0.15);
  border: 1px solid rgba(79, 70, 229, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 300;
}

/* Security Section */
.section-security {
  background: rgba(19, 19, 26, 0.35);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 80px 0;
  margin-bottom: 80px;
}

.security-layout {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.security-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.8px;
}

.security-bullets {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.security-bullet-card {
  background: var(--bg-surface-solid);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 24px;
}

.bullet-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.bullet-icon {
  color: var(--color-success);
}

.bullet-desc {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 300;
}

/* Architecture Flow Styling (SVG Block) */
.arch-container {
  background: rgba(10, 10, 15, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 40px;
  overflow-x: auto;
}

.arch-svg {
  max-width: 100%;
  min-width: 700px;
  height: auto;
}

/* Steps / Setup Guidelines */
.setup-guide {
  margin-bottom: 80px;
}

.setup-header {
  text-align: center;
  margin-bottom: 48px;
}

.setup-steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.step-item {
  display: flex;
  gap: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  align-items: flex-start;
}

.step-num {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  color: white;
  flex-shrink: 0;
  font-size: 15px;
}

.step-content {
  flex-grow: 1;
}

.step-title {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 300;
  margin-bottom: 12px;
}

/* Copyable Codeblock */
.codeblock-container {
  position: relative;
  background: #060608;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.codeblock {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #38bdf8;
  white-space: nowrap;
  overflow-x: auto;
}

.btn-copy {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  padding: 4px;
}

.btn-copy:hover {
  color: var(--text-primary);
}

.btn-copy svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 48px 0;
  text-align: center;
  background: #050507;
}

.footer-text {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-link {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-smooth);
}

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

/* Application Capabilities & Usage Sections */
.capabilities-section, .usage-section {
  padding: 60px 0;
  margin-bottom: 60px;
}

.capabilities-grid, .usage-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.capability-card, .usage-card {
  background: var(--bg-surface);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: var(--transition-smooth);
}

.capability-card:hover, .usage-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
}

.capability-header, .usage-card-header {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.capability-tag, .usage-step-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-accent);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.2);
  padding: 2px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}

.capability-text, .usage-text-content {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.capability-list {
  margin-top: 10px;
  padding-left: 18px;
  font-size: 13px;
  color: var(--text-secondary);
}

.capability-list li {
  margin-bottom: 6px;
}

/* ===== Doc Layout (Sidebar + Content) ===== */
.doc-layout {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  min-height: calc(100vh - 180px);
}

.doc-sidebar {
  width: 260px;
  flex-shrink: 0;
  padding: 32px 16px 32px 24px;
  border-right: 1px solid var(--border-subtle);
  position: sticky;
  top: 80px;
  height: calc(100vh - 80px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-subtle) transparent;
}

.doc-sidebar::-webkit-scrollbar { width: 4px; }
.doc-sidebar::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 4px; }

.sidebar-section { margin-bottom: 24px; }

.sidebar-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  padding: 0 12px;
}

.sidebar-link {
  display: block;
  padding: 6px 12px;
  font-size: 13.5px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition-smooth);
  margin-bottom: 2px;
}

.sidebar-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.sidebar-link.active { color: var(--color-accent); background: rgba(6,182,212,0.08); font-weight: 500; }

.doc-content {
  flex: 1;
  min-width: 0;
  padding: 40px 48px 60px;
  max-width: 880px;
}

.doc-content h1 {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.8px;
}

.doc-content h2 {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 600;
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.doc-content h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 10px;
}

.doc-content p { font-size: 15px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.7; }
.doc-content strong { color: var(--text-primary); }
.doc-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(255,255,255,0.05);
  padding: 2px 6px;
  border-radius: 4px;
  color: #38bdf8;
}

.doc-content ul, .doc-content ol { margin-bottom: 16px; padding-left: 20px; }
.doc-content li { font-size: 15px; color: var(--text-secondary); margin-bottom: 6px; line-height: 1.6; }
.doc-content table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
.doc-content th, .doc-content td {
  padding: 10px 14px;
  text-align: left;
  font-size: 13.5px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}
.doc-content th { color: var(--text-primary); font-weight: 600; background: var(--bg-surface-solid); }
.doc-content tr:hover td { background: rgba(255,255,255,0.02); }

.doc-content pre {
  background: #060608;
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  overflow-x: auto;
}

.doc-content pre code {
  background: none;
  padding: 0;
  font-size: 13px;
  color: #e2e8f0;
  line-height: 1.6;
}

.doc-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 12px 16px;
  margin: 16px 0;
  background: rgba(6,182,212,0.04);
  border-radius: 0 6px 6px 0;
}

.doc-content blockquote p { color: var(--text-primary); margin-bottom: 0; }

/* TOC */
.doc-toc {
  font-size: 13px;
  margin-bottom: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px 20px;
}

.doc-toc-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.doc-toc a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 3px 0;
  transition: var(--transition-smooth);
}

.doc-toc a:hover { color: var(--color-accent); }
.doc-toc a.toc-h2 { padding-left: 0; }
.doc-toc a.toc-h3 { padding-left: 16px; font-size: 12.5px; }

/* Hamburger toggle (mobile) */
.btn-sidebar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.btn-sidebar-toggle:hover { border-color: var(--border-focus); }
.btn-sidebar-toggle svg { width: 18px; height: 18px; }

@media (max-width: 768px) {
  .hero-title { font-size: 38px; }
  .hero-subtitle { font-size: 15px; }
  .btn-download { padding: 14px 28px; font-size: 15px; }
  .section-title { font-size: 28px; }
  .step-item { flex-direction: column; gap: 14px; }

  .doc-layout { flex-direction: column; }
  .doc-sidebar {
    display: none;
    width: 100%;
    position: fixed;
    top: 72px;
    left: 0;
    height: calc(100vh - 72px);
    z-index: 99;
    background: var(--bg-base);
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding: 24px;
  }
  .doc-sidebar.open { display: block; }
  .doc-content { padding: 24px 16px 40px; }
  .doc-content h1 { font-size: 28px; }
  .doc-content h2 { font-size: 20px; }
  .btn-sidebar-toggle { display: flex; }
  .nav-doc-links { display: none; }
}

/* Doc-style nav links in header */
.nav-doc-links {
  display: flex;
  gap: 4px;
}

.nav-doc-link {
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition-smooth);
}

.nav-doc-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.04); }
.nav-doc-link.active { color: var(--color-accent); background: rgba(6,182,212,0.08); }