/* ==========================================================================
   DONA RAG — OBSIDIAN TITANIUM ENTERPRISE DESIGN SYSTEM
   Brand & Architecture: Dona Codex (https://donacodex.com)
   Precision Monochromatic & High-Density Interface (Linear / Cursor Standard)
   ========================================================================== */

:root {
  /* Obsidian Base Canvas & Titanium Surfaces */
  --bg-deep: #08090c;
  --bg-surface: #0e1118;
  --bg-surface-elevated: #141824;
  --bg-card: #10141f;
  --bg-input: #090b10;

  /* Architectural Hairline Borders */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-active: rgba(255, 255, 255, 0.16);
  --border-accent: rgba(99, 102, 241, 0.35);

  /* High-Contrast Crisp Platinum Typography (WCAG AA Compliant) */
  --text-main: #f8fafc;
  --text-muted: #e2e8f0;
  --text-sub: #cbd5e1;

  /* Restrained Institutional Accents (No Cheap Gold) */
  --accent-primary: #ffffff;
  --accent-emerald: #10b981;
  --accent-indigo: #6366f1;
  --accent-cyan: #38bdf8;
  --accent-rose: #f43f5e;

  /* Type Families */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Radii (Concentric Squircles) */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;

  /* Neutral Elevation Shadows (Zero Colored Halos) */
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.6);
  --shadow-elevated: 0 20px 50px rgba(0, 0, 0, 0.7);
}

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

html {
  scroll-behavior: smooth;
  font-size: 14px;
}

body.site-body {
  background-color: var(--bg-deep);
  background-image: 
    radial-gradient(circle 800px at 50% -100px, rgba(99, 102, 241, 0.07), transparent 70%),
    linear-gradient(180deg, #08090c 0%, #0a0d14 60%, #07080b 100%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Links & Defaults */
a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
}

/* Custom Minimalist Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: #1e2433;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #333d54;
}

/* ==========================================================================
   Global Focus Indicators (WCAG 2.4.7)
   ========================================================================== */
:focus-visible {
  outline: 2px solid rgba(99, 102, 241, 0.7);
  outline-offset: 2px;
  border-radius: var(--radius-xs);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid rgba(99, 102, 241, 0.7);
  outline-offset: 2px;
}

/* Screen Reader Only Utility (WCAG 2.1 A11y) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Navigation Bar (Crisp & Compact)
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 9, 12, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  height: 56px;
}

.nav-container {
  max-width: 1080px;
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-name {
  font-size: 13.5px;
  font-weight: 750;
  letter-spacing: 0.8px;
  color: var(--text-main);
}

.brand-logo-img {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  vertical-align: middle;
  flex-shrink: 0;
  display: inline-block;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Mobile Hamburger Toggle */
.nav-hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 8px;
  transition: all 0.15s ease;
}

.nav-hamburger:hover {
  color: var(--text-main);
  border-color: var(--border-active);
}

.nav-hamburger svg {
  display: block;
}

/* Mobile Navigation Overlay */
.nav-mobile-overlay {
  display: none;
  position: fixed;
  top: 56px;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(8, 9, 12, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 99;
  padding: 24px 20px;
  flex-direction: column;
  gap: 8px;
  animation: fadeIn 0.2s ease;
}

.nav-mobile-overlay.active {
  display: flex;
}

.nav-mobile-overlay .nav-link {
  font-size: 16px;
  font-weight: 600;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  transition: all 0.15s ease;
}

.nav-mobile-overlay .nav-link:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--border-active);
}

.nav-mobile-overlay .btn-primary {
  margin-top: 8px;
  justify-content: center;
  padding: 14px;
  font-size: 14px;
}

/* High-Contrast Corporate Primary Button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-primary);
  color: #08090c;
  font-size: 12.5px;
  font-weight: 600;
  padding: 7px 15px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.9);
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.btn-primary:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section (Restrained, High-Density, Elegant)
   ========================================================================== */
.hero-section {
  padding: 52px 20px 40px;
  text-align: center;
  position: relative;
}

.hero-container {
  max-width: 1080px;
  margin: 0 auto;
}

.hero-telemetry-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.status-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-emerald);
  border-radius: 50%;
  display: inline-block;
}

.hero-headline {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--text-main);
  max-width: 860px;
  margin: 0 auto 18px;
}

.hero-subhead {
  font-size: 14.5px;
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}

.btn-hero-main {
  background: var(--accent-primary);
  color: #08090c;
  font-weight: 600;
  font-size: 13.5px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
}

.btn-hero-main:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

.btn-hero-outline {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-active);
  color: var(--text-main);
  font-size: 13.5px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-hero-outline:hover {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.07);
}

/* ==========================================================================
   Hero Studio Action Dock (Direct Launch to app.html)
   ========================================================================== */
.hero-action-dock {
  margin: 0 auto 36px;
  max-width: 860px;
  background: var(--bg-surface);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  align-items: center;
  text-align: left;
}

/* Compliance Pill (used on pricing page) */
.compliance-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero-dock-left {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-input);
  border: 1px dashed var(--border-active);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
}

.hero-dock-left:hover {
  background: #101420;
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-1px);
}

.hero-dock-icon {
  width: 32px;
  height: 32px;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.hero-dock-text strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 2px;
}

.hero-dock-text span {
  font-size: 12px;
  color: var(--text-muted);
}

.hero-dock-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dock-telemetry-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 6px;
}

.dock-telemetry-item:last-of-type {
  border-bottom: none;
  padding-bottom: 0;
}

.dock-tel-label {
  color: var(--text-muted);
}

.dock-tel-val {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

.dock-tel-val.emerald {
  color: var(--accent-emerald);
}

.btn-dock-launch {
  background: var(--accent-primary);
  color: #08090c;
  font-weight: 600;
  font-size: 13px;
  padding: 9px;
  border-radius: var(--radius-sm);
  text-align: center;
  text-decoration: none;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-dock-launch:hover {
  background: #f1f5f9;
}

/* ==========================================================================
   Ultra-High-Fidelity Studio Window Mockup (Obsidian Titanium)
   ========================================================================== */
.preview-window-shell {
  max-width: 960px;
  margin: 36px auto 0;
  background: #0b0e16;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.05);
  overflow: hidden;
  text-align: left;
  position: relative;
}

.preview-window-bar {
  height: 42px;
  background: #0e121c;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
}

.window-traffic-lights {
  display: flex;
  align-items: center;
  gap: 6px;
}

.window-traffic-lights .light {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.light.red { background: #ef4444; opacity: 0.8; }
.light.yellow { background: #f59e0b; opacity: 0.8; }
.light.green { background: #10b981; opacity: 0.8; }

.window-title-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
  padding: 4px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-subtle);
}

.window-tab-badge {
  color: var(--text-sub);
  font-size: 11px;
}

.window-meta-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent-emerald);
}

.preview-window-body {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 380px;
}

.preview-sidebar-pane {
  background: #090b10;
  border-right: 1px solid var(--border-subtle);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.preview-pane-header {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.preview-chunk-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 11.5px;
  transition: all 0.15s ease;
}

.preview-chunk-item .chunk-badge {
  display: inline-block;
  font-size: 10.5px;
  font-family: var(--font-mono);
  color: var(--text-sub);
  margin-bottom: 4px;
  font-weight: 600;
}

.preview-chunk-item .chunk-badge.emerald {
  color: var(--accent-emerald);
}

.preview-chunk-item p {
  color: var(--text-muted);
  line-height: 1.45;
  margin: 0;
}

.preview-chunk-item.highlight {
  border-color: rgba(16, 185, 129, 0.4);
  background: rgba(16, 185, 129, 0.05);
}

.preview-conversation-pane {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #0c0f17;
  position: relative;
}

.preview-msg {
  display: flex;
  gap: 12px;
  width: 100%;
}

.preview-msg.user {
  justify-content: flex-end;
}

.preview-bubble {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  line-height: 1.55;
  max-width: 85%;
}

.user-bubble {
  background: #1e2433;
  color: var(--text-main);
  border: 1px solid var(--border-active);
  border-bottom-right-radius: 2px;
}

.assistant-bubble {
  background: var(--bg-surface);
  border: 1px solid var(--border-active);
  color: var(--text-main);
  border-bottom-left-radius: 2px;
  flex: 1;
}

.preview-avatar {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: #141926;
  border: 1px solid var(--border-active);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--text-main);
  flex-shrink: 0;
}

.preview-callout {
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--accent-emerald);
  padding: 8px 12px;
  margin: 10px 0;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

.preview-callout strong {
  display: block;
  color: var(--text-main);
  margin-bottom: 2px;
}

.preview-citations-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle);
}

.citation-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 2px 8px;
  border-radius: 12px;
}

.preview-telemetry {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-sub);
  margin-left: auto;
}

.preview-launch-strip {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-muted);
}

/* ==========================================================================
   Trust Strip (Distilled & Minimalist)
   ========================================================================== */
.trust-strip {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  transition: all 0.15s ease;
}

.trust-badge:hover {
  border-color: var(--border-active);
  color: var(--text-main);
}

.trust-badge .badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 32px;
  text-align: left;
}

.trust-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  transition: border-color 0.15s ease;
}

.trust-item:hover {
  border-color: var(--border-active);
}

.trust-item strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 2px;
}

.trust-item span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ==========================================================================
   Section Standard
   ========================================================================== */
.section-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-header {
  text-align: center;
  margin-bottom: 32px;
}

.section-title {
  font-size: 24px;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  color: var(--text-main);
}

.section-desc {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ==========================================================================
   Architecture Pipeline
   ========================================================================== */
.demo-section {
  padding: 60px 20px;
  background: #090b10;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.pipeline-3d-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1080px;
  margin: 0 auto;
}

.pipe-node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.pipe-node-card:hover,
.pipe-node-card.active {
  border-color: rgba(255, 255, 255, 0.3);
  background: var(--bg-surface-elevated);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
}

.pipe-node-connector {
  display: none;
}

.pipe-node-badge {
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-sub);
  letter-spacing: 0.6px;
  margin-bottom: 6px;
}

.pipe-node-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.3;
}

.pipe-node-sub {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-top: 4px;
}

.pipe-node-status {
  display: inline-block;
  margin-top: 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  font-weight: 500;
  padding: 2px 7px;
  background: rgba(16, 185, 129, 0.08);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--radius-xs);
}

.pipe-node-connector {
  font-size: 16px;
  color: var(--text-sub);
  user-select: none;
}

/* ==========================================================================
   Minimal & Advanced ROI Modeling Matrix
   ========================================================================== */
.roi-section {
  padding: 60px 20px;
}

.roi-container {
  max-width: 980px;
  margin: 0 auto;
}

.roi-preset-nav {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.roi-preset-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all 0.15s ease;
}

.roi-preset-btn:hover {
  color: var(--text-main);
  border-color: var(--border-active);
}

.roi-preset-btn.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.28);
}

.roi-matrix-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}

.roi-sliders-pane {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.roi-slider-unit label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-main);
  margin-bottom: 8px;
}

.roi-slider-unit label .val {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

.roi-range-input {
  width: 100%;
  accent-color: var(--accent-primary);
  height: 4px;
  background: #1c2233;
  border-radius: 2px;
  outline: none;
}

.roi-kpi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 20px;
}

.roi-kpi-card .kpi-val {
  display: block;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
  font-family: var(--font-mono);
  margin-bottom: 2px;
}

.roi-kpi-card .kpi-lbl {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.35;
}

.roi-kpi-card .kpi-sub {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--accent-emerald);
  margin-top: 2px;
}

/* ==========================================================================
   Core Features Grid (Enterprise Hardware-Grade)
   ========================================================================== */
.features-section {
  padding: 64px 20px;
  background: #08090c;
  border-bottom: 1px solid var(--border-subtle);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.feature-card:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: var(--bg-surface-elevated);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}

.feature-card p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Use Cases Grid (Corporate Domain Pillars)
   ========================================================================== */
.use-cases-section {
  padding: 64px 20px;
  background: #0b0e16;
  border-bottom: 1px solid var(--border-subtle);
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

.use-case-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.use-case-card:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: var(--bg-surface-elevated);
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
}

.uc-badge {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 3px 10px;
  border-radius: 12px;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.use-case-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  letter-spacing: -0.2px;
}

.use-case-card p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Beta Platform Portal (Desktop Beta Elevated)
   ========================================================================== */
.beta-section {
  padding: 64px 20px;
  background: #090b10;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.beta-container {
  max-width: 860px;
  margin: 0 auto;
}

.beta-portal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 36px 32px;
  text-align: left;
}

.beta-head-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.beta-badge {
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 3px 10px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.beta-title {
  font-size: 22px;
  font-weight: 750;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.beta-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 24px;
}

.beta-os-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.beta-os-item {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 12px 14px;
}

.beta-os-item strong {
  display: block;
  font-size: 13px;
  color: var(--text-main);
  margin-bottom: 3px;
}

.beta-os-item span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

.beta-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: center;
}

.beta-input {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-main);
  outline: none;
}

.beta-input:focus {
  border-color: var(--border-active);
}

.beta-submit-btn {
  background: var(--accent-primary);
  color: #08090c;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.beta-submit-btn:hover {
  background: #f1f5f9;
}

.beta-ticket-badge {
  margin-top: 16px;
  padding: 12px 16px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent-emerald);
  border-radius: var(--radius-xs);
  font-size: 12.5px;
  display: none;
}


/* ==========================================================================
   Centered Minimalist Footer
   ========================================================================== */
.site-footer {
  padding: 40px 20px;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-deep);
  text-align: center;
}

.footer-container {
  max-width: 1080px;
  margin: 0 auto;
}

.brand-line {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--text-main);
  margin-bottom: 4px;
}

.brand-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-legal-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.footer-legal-bar a:hover {
  color: var(--text-main);
}

.footer-legal-bar .sep {
  color: var(--text-sub);
}

.footer-copyright-centered {
  font-size: 12px;
  color: var(--text-sub);
}

/* ==========================================================================
   Typing Cursor Animation
   ========================================================================== */
.typing-cursor::after {
  content: '▋';
  display: inline-block;
  vertical-align: middle;
  color: var(--text-muted);
  animation: blink 0.8s infinite;
  margin-left: 2px;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Media Queries */
@media (max-width: 900px) {
  .pipeline-3d-grid {
    grid-template-columns: 1fr;
  }
  .pipe-node-connector {
    display: none;
  }
  .roi-widget-box {
    grid-template-columns: 1fr;
  }
  .roi-matrix-box {
    grid-template-columns: 1fr;
  }
  .features-grid,
  .use-cases-grid {
    grid-template-columns: 1fr;
  }
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-action-dock {
    grid-template-columns: 1fr;
  }
  .beta-form-grid {
    grid-template-columns: 1fr;
  }
  .beta-os-matrix {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .nav-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .nav-actions {
    display: none;
  }
  .hero-headline {
    font-size: clamp(22px, 5vw, 32px);
  }
  .hero-cta-group {
    flex-direction: column;
  }
  .preview-workspace-body {
    grid-template-columns: 1fr;
  }
  .preview-col-inspector {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .waitlist-feature-row {
    grid-template-columns: 1fr;
  }
  .waitlist-form {
    flex-direction: column;
  }
  .sandbox-launch-strip {
    flex-direction: column;
    align-items: flex-start;
  }
  .trust-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Accessibility: Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}