/* ===================================================================
   AI TASKFORCE — DESIGN SYSTEM STYLESHEET (style.css)
   Derived strictly from design.md & ai_website_development_blueprint.md
   =================================================================== */

/* --- 1. CSS Custom Properties / Design Tokens --- */
:root {
  --bg-canvas: #0A0A0C;
  --bg-subtle: #0F1015;
  --bg-card: rgba(19, 20, 27, 0.75);
  --bg-card-solid: #13141B;
  --bg-elevated: #1A1B24;
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.10);
  --border-hover: rgba(99, 102, 241, 0.4);
  --border-focus: rgba(99, 102, 241, 0.6);

  --brand-indigo: #6366F1;
  --brand-indigo-hover: #4F46E5;
  --brand-indigo-light: #818CF8;
  --brand-indigo-dim: rgba(99, 102, 241, 0.12);
  --brand-indigo-glow: rgba(99, 102, 241, 0.25);

  --brand-emerald: #10B981;
  --brand-emerald-glow: #34D399;
  --brand-emerald-dim: rgba(16, 185, 129, 0.12);

  --accent-cyan: #06B6D4;
  --accent-amber: #F59E0B;

  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
  --shadow-glow-indigo: 0 0 35px -5px rgba(99, 102, 241, 0.35);
  --shadow-glow-emerald: 0 0 35px -5px rgba(16, 185, 129, 0.35);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 2. CSS Reset & Global Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background: var(--bg-canvas);
  line-height: 1.6;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-canvas);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-canvas);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--brand-indigo);
}

/* Selection */
::selection {
  background: rgba(99, 102, 241, 0.35);
  color: #FFFFFF;
}

/* Links & Buttons Reset */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

/* Focus Accessibility */
:focus-visible {
  outline: 2px solid var(--brand-indigo-light);
  outline-offset: 3px;
}

/* --- 3. Ambient Lighting & Tech Grid Overlay --- */
.ambient-glow {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.65;
  transition: opacity 1s ease;
}

.glow-indigo {
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 650px;
  height: 380px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.22) 0%, rgba(99, 102, 241, 0) 70%);
}

.glow-emerald {
  top: 45%;
  right: -100px;
  width: 500px;
  height: 350px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(16, 185, 129, 0) 70%);
}

.glow-bottom {
  bottom: 5%;
  left: -80px;
  width: 550px;
  height: 380px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, rgba(6, 182, 212, 0) 70%);
}

.tech-grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 85%);
}

/* --- 4. Layout Structure --- */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

section {
  position: relative;
  z-index: 1;
  padding: 96px 0;
}

/* --- 5. Typography & Gradient Utilities --- */
.gradient-text {
  background: linear-gradient(135deg, #818CF8 0%, #38BDF8 40%, #34D399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--brand-indigo-dim);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--brand-indigo-light);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px auto;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- 6. Navigation Bar --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: rgba(10, 10, 12, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-normal), background var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.1875rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.logo-symbol {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--brand-indigo), #3B82F6);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.4);
}

.logo-symbol svg {
  width: 18px;
  height: 18px;
  fill: #FFFFFF;
}

.brand-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-emerald);
  box-shadow: 0 0 8px var(--brand-emerald);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-indigo-light);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-ghost-nav {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.btn-ghost-nav:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.btn-primary-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-indigo);
  color: #FFFFFF;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 2px 14px rgba(99, 102, 241, 0.35);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary-nav:hover {
  background: var(--brand-indigo-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.45);
}

.mobile-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-glass);
}

.mobile-toggle svg {
  width: 20px;
  height: 20px;
  stroke: var(--text-primary);
}

/* Mobile Drawer */
.mobile-menu {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(10, 10, 12, 0.96);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 24px;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu.open {
  display: flex;
}

/* --- 7. Hero Section --- */
.hero-section {
  padding: 80px 0 60px 0;
  text-align: center;
  min-height: calc(90vh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--brand-indigo-dim);
  border: 1px solid rgba(99, 102, 241, 0.28);
  color: var(--brand-indigo-light);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-emerald-glow);
  position: relative;
}

.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: var(--brand-emerald);
  opacity: 0.75;
  animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  75%, 100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

.hero-title {
  font-size: clamp(2.5rem, 5.5vw, 4.25rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.035em;
  max-width: 960px;
  margin: 0 auto 24px auto;
  color: var(--text-primary);
}

.hero-subtitle {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 36px auto;
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--brand-indigo);
  color: #FFFFFF;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 24px rgba(99, 102, 241, 0.4);
  transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-hero-primary:hover {
  background: var(--brand-indigo-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card-solid);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 500;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-hero-secondary:hover {
  background: var(--bg-elevated);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Quick Metrics Strip */
.hero-metrics-ribbon {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 920px;
  margin: 0 auto;
  padding: 20px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.metric-val {
  font-size: 1.375rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.metric-val .badge-green {
  color: var(--brand-emerald);
}

.metric-lbl {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* --- 8. Social Proof & Trust Strip --- */
.proof-section {
  padding: 40px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(15, 16, 21, 0.5);
}

.proof-header {
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.proof-logos-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.partner-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 1.0625rem;
  opacity: 0.65;
  transition: opacity var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.partner-logo:hover {
  opacity: 1;
  color: var(--text-primary);
  transform: translateY(-1px);
}

.partner-logo svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

/* --- 9. Core Features Bento Matrix --- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.bento-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 40px -10px rgba(0, 0, 0, 0.6), 0 0 24px rgba(99, 102, 241, 0.15);
}

.bento-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.4), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

.card-top {
  margin-bottom: 24px;
}

.card-icon-pill {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.pill-indigo {
  background: var(--brand-indigo-dim);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--brand-indigo-light);
}

.pill-emerald {
  background: var(--brand-emerald-dim);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--brand-emerald);
}

.pill-cyan {
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
}

.card-title {
  font-size: 1.3125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  letter-spacing: -0.015em;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Feature 1: Bilingual Switch Widget */
.widget-bilingual {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 24px;
}

.bilingual-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.lang-selector-chips {
  display: flex;
  gap: 6px;
}

.lang-chip {
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-card-solid);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.lang-chip.active {
  background: var(--brand-indigo);
  color: #FFFFFF;
  border-color: var(--brand-indigo);
}

.bilingual-content {
  font-size: 0.8125rem;
  font-family: var(--font-mono);
  background: rgba(10, 10, 12, 0.6);
  padding: 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--brand-indigo);
  color: var(--text-secondary);
  min-height: 58px;
  line-height: 1.45;
}

/* Feature 2: Real-Time Ping Visualizer */
.widget-realtime {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 24px;
}

.ping-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.ping-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--brand-emerald-glow);
}

.ping-indicator .beacon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-emerald);
}

.ping-live-val {
  font-weight: 700;
  font-size: 0.875rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.waveform-canvas-box {
  width: 100%;
  height: 52px;
  background: rgba(10, 10, 12, 0.7);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 0 4px 4px 4px;
  gap: 4px;
}

.wave-bar {
  flex: 1;
  background: linear-gradient(to top, var(--brand-indigo), var(--accent-cyan));
  border-radius: 2px;
  transition: height 0.15s ease;
  min-height: 6px;
}

/* Feature 3: Privacy Shield Controls */
.widget-privacy {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #2D3748;
  border-radius: 20px;
  transition: var(--transition-fast);
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: var(--transition-fast);
}

input:checked + .slider {
  background-color: var(--brand-emerald);
}

input:checked + .slider:before {
  transform: translateX(16px);
}

.privacy-badge-status {
  margin-top: 4px;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--brand-emerald-glow);
  text-align: right;
}

/* --- 10. Interactive Playground / Terminal --- */
.playground-section {
  padding-top: 60px;
}

.playground-shell {
  background: #0E0F14;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 60px -15px rgba(0, 0, 0, 0.8), 0 0 40px rgba(99, 102, 241, 0.15);
  overflow: hidden;
  max-width: 1080px;
  margin: 0 auto;
}

.terminal-header {
  background: #15171F;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 12px;
}

.window-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.window-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

.terminal-title-center {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.terminal-model-select {
  background: #1C1E29;
  color: var(--brand-indigo-light);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  cursor: pointer;
}

.terminal-status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--brand-emerald);
}

.playground-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 440px;
}

.prompt-pane {
  padding: 24px;
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.pane-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.preset-chips-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.preset-chip {
  text-align: left;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preset-chip:hover {
  background: var(--bg-elevated);
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--text-primary);
}

.prompt-textarea {
  width: 100%;
  height: 120px;
  background: #13141B;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  resize: none;
  transition: border-color var(--transition-fast);
}

.prompt-textarea:focus {
  border-color: var(--brand-indigo);
}

.prompt-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
}

.char-counter {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.btn-run-inference {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--brand-indigo);
  color: #FFFFFF;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 2px 16px rgba(99, 102, 241, 0.35);
  transition: all var(--transition-fast);
}

.btn-run-inference:hover {
  background: var(--brand-indigo-hover);
  transform: translateY(-1px);
}

.btn-run-inference:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Output Console Pane */
.output-pane {
  padding: 24px;
  background: #090A0D;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.output-metrics-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.output-container {
  flex-grow: 1;
  padding: 16px 0;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: #E2E8F0;
  overflow-y: auto;
  max-height: 260px;
}

.streaming-cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--brand-emerald);
  margin-left: 4px;
  vertical-align: middle;
  animation: blink 1s step-start infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.output-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.btn-copy-output {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.btn-copy-output:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
  border-color: rgba(255, 255, 255, 0.2);
}

/* --- 11. Roadmap Timeline --- */
.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
  margin-top: 40px;
}

.roadmap-timeline::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-emerald) 0%, var(--brand-indigo) 50%, var(--bg-elevated) 100%);
  z-index: 0;
}

.roadmap-phase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 32px 24px;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.roadmap-phase-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
}

.phase-node {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9375rem;
}

.node-complete {
  background: var(--brand-emerald-dim);
  border: 2px solid var(--brand-emerald);
  color: var(--brand-emerald);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
}

.node-active {
  background: var(--brand-indigo-dim);
  border: 2px solid var(--brand-indigo);
  color: var(--brand-indigo-light);
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.5);
  animation: pulse-ring 2.5s infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.5); }
  70% { box-shadow: 0 0 0 14px rgba(99, 102, 241, 0); }
  100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.node-planned {
  background: var(--bg-card-solid);
  border: 2px solid var(--border-subtle);
  color: var(--text-muted);
}

.phase-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.phase-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.phase-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag-complete {
  background: var(--brand-emerald-dim);
  color: var(--brand-emerald-glow);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.tag-active {
  background: var(--brand-indigo-dim);
  color: var(--brand-indigo-light);
  border: 1px solid rgba(99, 102, 241, 0.4);
}

.tag-planned {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.phase-items-list {
  list-style: none;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.phase-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.phase-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 3px;
}

.check-green { stroke: var(--brand-emerald); }
.check-indigo { stroke: var(--brand-indigo-light); }
.check-gray { stroke: var(--text-muted); }

/* --- 12. CTA Banner & Early Access --- */
.cta-banner-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(16, 185, 129, 0.08) 100%), var(--bg-card-solid);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-xl);
  padding: 64px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(99, 102, 241, 0.15);
}

.cta-title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.cta-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px auto;
}

.newsletter-form {
  display: flex;
  max-width: 480px;
  margin: 0 auto;
  gap: 10px;
}

.newsletter-input {
  flex-grow: 1;
  background: #0A0A0C;
  border: 1px solid var(--border-card);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
}

.newsletter-input:focus {
  border-color: var(--brand-indigo);
}

.newsletter-btn {
  background: var(--brand-indigo);
  color: #FFFFFF;
  padding: 14px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  box-shadow: 0 2px 16px rgba(99, 102, 241, 0.4);
  transition: all var(--transition-fast);
}

.newsletter-btn:hover {
  background: var(--brand-indigo-hover);
}

.newsletter-toast {
  margin-top: 14px;
  font-size: 0.8125rem;
  color: var(--brand-emerald-glow);
  display: none;
}

/* --- 13. Footer --- */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #08080A;
  padding: 80px 0 32px 0;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-column h4 {
  font-size: 0.875rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--brand-indigo-light);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

.system-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--brand-emerald-dim);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--brand-emerald-glow);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* --- 14. Responsive Breakpoints --- */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .roadmap-timeline {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .roadmap-timeline::before {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .playground-body {
    grid-template-columns: 1fr;
  }

  .prompt-pane {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .hero-metrics-ribbon {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .newsletter-form {
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}