/* CEO-in-a-Box Design System (Crimson Theme) */
:root {
  /* Colors */
  --bg: #0F0F13;
  --surface: #1e1e2e;
  --surface-hover: #2a2a3e;
  --border: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 51, 51, 0.5);
  --text: #ffffff;
  --text-muted: #a1a1aa;
  
  --primary: #ff3333;
  --primary-hover: #cc0000;
  --primary-faint: rgba(255, 51, 51, 0.1);
  --success: #22c55e;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  /* Layout */
  --radius: 8px;
  --container-width: 1200px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.brand svg {
  color: var(--primary);
}
.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background-color: var(--primary);
  color: #fff !important;
}
.btn-primary:hover {
  background-color: var(--primary-hover);
}
.btn-outline {
  background-color: transparent;
  border-color: var(--border);
  color: var(--text) !important;
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary) !important;
}
.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

/* Hero */
.hero-wrapper {
  padding: 4rem 0 6rem 0;
  border-bottom: 1px solid var(--border);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-content h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  font-weight: 700;
  margin: 1.5rem 0;
  letter-spacing: -0.02em;
}
.hero-content p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 90%;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--primary-faint);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--primary-faint);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Dashboard Mockup Container */
.mock-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(255, 51, 51, 0.15);
  display: flex;
  flex-direction: column;
  height: 500px;
}
.mock-window-header {
  height: 2.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 1rem;
  gap: 0.5rem;
}
.mock-window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.mock-window-dot:nth-child(1) { background: #ef4444; }
.mock-window-dot:nth-child(2) { background: #eab308; }
.mock-window-dot:nth-child(3) { background: #22c55e; }
.mock-window-body {
  display: flex;
  flex: 1;
}
.mock-window-sidebar {
  width: 200px;
  border-right: 1px solid var(--border);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.mock-sidebar-group h4 {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.mock-sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  padding: 0.5rem;
  border-radius: 6px;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}
.mock-sidebar-link.active {
  background: var(--primary-faint);
  color: var(--primary);
  font-weight: 500;
}
.mock-window-main {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
#three-canvas-container {
  flex: 1;
  width: 100%;
}
.mock-window-footer {
  padding: 1rem;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

/* Sections */
.section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--border);
}
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}
.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.section-header p {
  color: var(--text-muted);
  font-size: 1.125rem;
}

/* Grids */
.grid {
  display: grid;
  gap: 1.5rem;
}
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.2s ease;
}
.card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
}
.card-icon {
  color: var(--primary);
  margin-bottom: 1.5rem;
}
.card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}
.card p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
}
.card-link:hover { gap: 0.5rem; }

/* Providers Logo Strip */
.provider-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  margin-top: 2rem;
  opacity: 0.7;
}
.provider-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.provider-logo:hover {
  color: var(--text);
}

/* Sidebar Pages (Docs/Architecture/Roadmap) */
.page-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 4rem;
  padding: 4rem 0;
}
.page-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: sticky;
  top: 6rem;
}
.sidebar-group h4 {
  font-size: 0.875rem;
  color: var(--text);
  margin-bottom: 1rem;
}
.sidebar-group a {
  display: block;
  color: var(--text-muted);
  font-size: 0.875rem;
  padding: 0.5rem 0;
}
.sidebar-group a:hover, .sidebar-group a.active {
  color: var(--primary);
  font-weight: 500;
}

/* Architecture Layer Boxes */
.arch-layer {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  display: grid;
  grid-template-columns: 200px 1fr;
  align-items: center;
  gap: 2rem;
}
.arch-layer-title {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.875rem;
}
.arch-layer-items {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.arch-item {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.timeline-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}
.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}
.timeline-title {
  font-size: 1.25rem;
  font-weight: 600;
}
.timeline-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.05);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}
.timeline-list {
  list-style: none;
}
.timeline-list li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.timeline-list li i {
  color: var(--primary);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem 0;
  margin-top: 4rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 1rem;
  max-width: 300px;
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}
.footer-col h4 {
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}
.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.75rem;
}

@media (max-width: 992px) {
  .hero-grid, .page-layout { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .arch-layer { grid-template-columns: 1fr; gap: 1rem; }
}
@media (max-width: 768px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}

/* FAQ */
.faq-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  background: var(--surface);
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: #fff;
  list-style: none;
}
.faq-item summary::after {
  content: '+';
  float: right;
  color: var(--text-muted);
  font-weight: 400;
}
.faq-item[open] summary::after {
  content: '−';
}
.faq-item p {
  margin: 0.75rem 0 0;
  color: var(--text-muted);
  line-height: 1.6;
  font-size: 0.95rem;
}
.cta-section {
  border-top: 1px solid var(--border);
}

/* Brand logo */
.brand-logo {
  width: 26px;
  height: 26px;
  border-radius: 6px;
  flex: none;
}