/* ==========================================================================
   ragcodepilot — Calm & Earthy Blue-Green Design System
   Warm mineral surfaces, sea-glass accents, and forest ink
   ========================================================================== */

/* Self-hosted variable fonts (latin subset) — keeps the site fully offline,
   consistent with the "zero cloud APIs" privacy claim. OFL-licensed. */
@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
  src: url('fonts/plus-jakarta-sans-latin-var.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url('fonts/jetbrains-mono-latin-var.woff2') format('woff2');
}

:root {
  /* Core theme: warm ivory and sage */
  --bg-primary: #f4f5ef;
  --bg-secondary: #e8eee7;
  --bg-card: #fcfdf9;
  --bg-card-dot: #f3f7f1;
  --text-primary: #193c3a;
  --text-secondary: #45615d;
  --text-muted: #586f69;
  
  /* Soft borders and diffuse depth */
  --border-color: #91a99c;
  --border-width: 1px;
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-pill: 9999px;
  
  --shadow-color: rgba(29, 64, 53, 0.10);
  --shadow-sm: 0 2px 5px var(--shadow-color);
  --shadow-md: 0 5px 16px var(--shadow-color);
  --shadow-lg: 0 8px 24px var(--shadow-color);
  --shadow-xl: 0 12px 32px var(--shadow-color);
  
  /* Earthy accents. Legacy names preserve existing component and pipeline hooks. */
  --accent-yellow: #bfd3b5;
  --accent-yellow-light: #e5eddf;
  --accent-pink: #b4ceca;
  --accent-pink-light: #e1ece8;
  --accent-blue: #aeced6;
  --accent-blue-light: #e1eef0;
  --accent-orange: #d5c5a5;
  --accent-orange-light: #eee8da;
  --accent-mint: #a9cbb9;
  --accent-mint-light: #dfede4;
  --accent-purple: #b7c9d0;
  --accent-purple-light: #e5ecee;
  
  /* Matrix & Code Theme */
  --code-bg: #132b2b;
  --code-text: #e4eee6;
  --code-border: #416057;
  
  --accent-ink: #193c3a;
  --focus-ring: #356b69;
  --success-text: #36694d;
  --danger-text: #96533e;
  --flow-yellow: #64784c;
  --flow-blue: #397784;
  --flow-orange: #887343;
  --flow-mint: #3e795a;
  --flow-pink: #577f77;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
  
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* Core theme: deep forest and soft sea glass */
  --bg-primary: #142c29;
  --bg-secondary: #193431;
  --bg-card: #203d39;
  --bg-card-dot: #1b3532;
  --text-primary: #edf2e9;
  --text-secondary: #c4d6cd;
  --text-muted: #a6bfb3;
  
  /* Muted edges remain visible against dark forest surfaces. */
  --border-color: #65877a;
  --shadow-color: rgba(0, 12, 10, 0.24);
  
  /* Dark mode accent adjustments */
  --accent-yellow: #b6cba7;
  --accent-yellow-light: #2c4336;
  --accent-pink: #aacac1;
  --accent-pink-light: #29443e;
  --accent-blue: #a5cbd3;
  --accent-blue-light: #28434a;
  --accent-orange: #ccbea0;
  --accent-orange-light: #423e30;
  --accent-mint: #96c6ad;
  --accent-mint-light: #264539;
  --accent-purple: #b0c6ce;
  --accent-purple-light: #2e4249;
  
  --code-bg: #102724;
  --code-border: #3c5c53;
  --focus-ring: #a5cbd3;
  --success-text: #a5d5b5;
  --danger-text: #e2b29d;
  --flow-yellow: #adbe8f;
  --flow-blue: #92c2cc;
  --flow-orange: #cbbc92;
  --flow-mint: #94c9a7;
  --flow-pink: #a4c8bd;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* ==========================================================================
   Neobrutalist Reusable Components & Utilities
   ========================================================================== */

.nb-card {
  min-width: 0;
  background-color: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nb-card.hoverable:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}

.nb-card-dot {
  background-color: var(--bg-card-dot);
}

/* Pill Buttons */
.nb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.55rem 1.2rem;
  border-radius: var(--border-radius-pill);
  border: var(--border-width) solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.nb-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
}

.nb-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0px var(--shadow-color);
}

.nb-btn-yellow { background-color: var(--accent-yellow); color: var(--accent-ink); }
.nb-btn-yellow:hover { background-color: #acc69f; }

.nb-btn-pink { background-color: var(--accent-pink); color: var(--accent-ink); }
.nb-btn-pink:hover { background-color: #a0bfb9; }

.nb-btn-blue { background-color: var(--accent-blue); color: var(--accent-ink); }
.nb-btn-blue:hover { background-color: #98bec8; }

.nb-btn-orange { background-color: var(--accent-orange); color: var(--accent-ink); }
.nb-btn-orange:hover { background-color: #c6b68f; }

.nb-btn-mint { background-color: var(--accent-mint); color: var(--accent-ink); }
.nb-btn-mint:hover { background-color: #92bba4; }

.nb-btn-sm {
  padding: 0.35rem 0.85rem;
  font-size: 0.8rem;
}

.nb-btn-lg {
  padding: 0.75rem 1.6rem;
  font-size: 1.05rem;
}

/* Neobrutalist Badges & Pills */
.nb-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.65rem;
  border-radius: var(--border-radius-pill);
  border: var(--border-width) solid var(--border-color);
  background-color: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}

.nb-badge.yellow { background-color: var(--accent-yellow); color: var(--accent-ink); }
.nb-badge.pink { background-color: var(--accent-pink); color: var(--accent-ink); }
.nb-badge.blue { background-color: var(--accent-blue); color: var(--accent-ink); }
.nb-badge.orange { background-color: var(--accent-orange); color: var(--accent-ink); }
.nb-badge.mint { background-color: var(--accent-mint); color: var(--accent-ink); }
.nb-badge.purple { background-color: var(--accent-purple); color: var(--accent-ink); }

/* Pulse Indicator */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success-text);
  box-shadow: 0 0 0 0 rgba(66, 119, 91, 0.7);
  animation: pulse-ring 2s infinite;
  display: inline-block;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(66, 119, 91, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(66, 119, 91, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(66, 119, 91, 0); }
}

/* ==========================================================================
   Header & Top Architecture Bar
   ========================================================================== */

.top-bar {
  background-color: var(--bg-secondary);
  border-bottom: var(--border-width) solid var(--border-color);
  padding: 0.45rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 100;
}

.top-bar-container {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.stack-status-strip {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  padding: 0.15rem 0;
}

.stack-item {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--bg-card);
  padding: 0.18rem 0.52rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-pill);
  box-shadow: 1.5px 1.5px 0px var(--border-color);
  font-size: 0.72rem;
  white-space: nowrap;
}

.stack-label {
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.stack-val {
  font-weight: 700;
  color: var(--text-primary);
}

/* Main Site Header */
.main-header {
  padding: 0.75rem 1.5rem;
  max-width: 1280px;
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: inherit;
}

.brand-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-sm);
  background-color: var(--accent-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 900;
  overflow: hidden;
}

.brand-info h1 {
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.nav-toggle {
  display: none;
}

.nav-pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: var(--border-radius-pill);
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  border-color: var(--border-color);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transform: translate(-1px, -1px);
}

.nav-link.active {
  color: var(--accent-ink);
  background-color: var(--accent-yellow);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  max-width: 1280px;
  margin: 0.75rem auto 1.5rem;
  padding: 0 1.5rem;
}

.hero-tagline {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  font-weight: 600;
}

.hero-tagline a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.hero-title {
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  max-width: 960px;
}

.hero-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.45;
  max-width: 860px;
  margin-bottom: 0.85rem;
}

.hero-action-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.hero-action-row .nb-btn-lg {
  padding: 0.45rem 1rem;
  font-size: 0.88rem;
}

/* Spotlight Card (Codex Resets Style Big Card) */
.hero-spotlight {
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  position: relative;
}

.spotlight-header {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.spotlight-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.spotlight-big-highlight {
  color: var(--accent-ink);
  display: inline-block;
  background-color: var(--accent-yellow);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 0.4rem 0.85rem;
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  box-shadow: var(--shadow-sm);
  line-height: 1.2;
}

.spotlight-meta {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.spotlight-meta strong {
  color: var(--text-primary);
  border-bottom: 1.5px dashed var(--text-primary);
}

/* Stat Cards 4-Column Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  padding: 0.85rem 1rem;
  border-radius: var(--border-radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stat-card.yellow { background-color: var(--accent-yellow); }
.stat-card.pink { background-color: var(--accent-pink); }
.stat-card.blue { background-color: var(--accent-blue); }
.stat-card.mint { background-color: var(--accent-mint); }
.stat-card.orange { background-color: var(--accent-orange); }
.stat-card { color: #193c3a; }

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #193c3a;
  margin-bottom: 0.3rem;
}

.stat-number {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent-ink);
  margin-bottom: 0.25rem;
}

.stat-note {
  font-size: 0.75rem;
  font-weight: 600;
  color: #294d45;
}

/* ==========================================================================
   Section Common Layouts
   ========================================================================== */

.section-container {
  max-width: 1280px;
  margin: 0 auto 4rem;
  padding: 0 1.5rem;
}

.section-header {
  margin-bottom: 2rem;
}

.section-title-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 750px;
}

/* ==========================================================================
   Interactive Pipeline Flow Map
   ========================================================================== */

.flow-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.flow-tab-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.stream-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 0.75rem 1.25rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.stream-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.stream-ticker {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  background-color: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-pill);
  padding: 0.35rem 0.85rem;
  color: var(--text-primary);
  max-width: 580px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flow-legend {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.legend-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend-color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1.5px solid var(--border-color);
  display: inline-block;
}
.legend-color-dot.yellow { background-color: var(--accent-yellow); }
.legend-color-dot.blue { background-color: var(--accent-blue); }
.legend-color-dot.orange { background-color: var(--accent-orange); }
.legend-color-dot.mint { background-color: var(--accent-mint); }
.legend-color-dot.pink { background-color: var(--accent-pink); }

/* Animated Pipeline Canvas */
.pipeline-canvas-wrapper {
  background-color: var(--bg-card-dot);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  overflow-x: auto;
  position: relative;
}

.pipeline-canvas-svg {
  width: 100%;
  min-width: 1080px;
  height: 380px;
  display: block;
  user-select: none;
}

.pipeline-mobile-list {
  display: none;
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  flex-direction: column;
  gap: 0.65rem;
}

.pipeline-mobile-step {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
  padding: 0.55rem 0.75rem;
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  color: var(--text-primary);
}

.pipeline-mobile-step.active {
  background-color: var(--accent-yellow-light);
  box-shadow: var(--shadow-md);
}

.pipeline-mobile-stage {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
}

.pipeline-mobile-name {
  font-size: 0.88rem; /* same as .nav-link */
  font-weight: 800;
}

.pipeline-mobile-sub {
  font-family: var(--font-mono);
  font-size: 0.78rem; /* same as .stream-ticker */
  font-weight: 600;
  color: var(--text-secondary);
}

/* SVG Flow Bus Paths */
.flow-bus-line {
  fill: none;
  stroke-width: 3.5px;
  stroke-linecap: round;
  stroke-dasharray: 8 6;
  animation: flowMarch 1.2s linear infinite;
  transition: stroke 0.3s ease;
}

.flow-bus-line.bus-yellow { stroke: var(--flow-yellow); }
.flow-bus-line.bus-blue { stroke: var(--flow-blue); }
.flow-bus-line.bus-orange { stroke: var(--flow-orange); }
.flow-bus-line.bus-mint { stroke: var(--flow-mint); }
.flow-bus-line.bus-pink { stroke: var(--flow-pink); }

.pipeline-canvas-wrapper.paused .flow-bus-line {
  animation-play-state: paused !important;
}

.pipeline-canvas-wrapper.speed-2x .flow-bus-line {
  animation-duration: 0.6s !important;
}

@keyframes flowMarch {
  from { stroke-dashoffset: 28; }
  to { stroke-dashoffset: 0; }
}

/* Flying Data Particles */
.flow-particle {
  filter: drop-shadow(0 0 4px rgba(0, 0, 0, 0.4));
  transition: transform 0.1s linear;
}

/* Canvas Node Elements */
.canvas-node-group {
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.canvas-node-group:hover {
  /* Preserve the SVG transform that positions each node. */
  cursor: pointer;
}

.canvas-node-rect {
  fill: var(--bg-card);
  stroke: var(--border-color);
  stroke-width: 1.5px;
  rx: 12px;
  filter: drop-shadow(0 3px 4px var(--shadow-color));
  transition: all var(--transition-fast);
}

.canvas-node-group:hover .canvas-node-rect {
  filter: drop-shadow(0 5px 6px var(--shadow-color));
  stroke-width: 3px;
}

.canvas-node-group.active .canvas-node-rect {
  stroke-width: 3.5px;
  stroke: var(--focus-ring);
  filter: drop-shadow(0 5px 6px var(--shadow-color));
}

/* Keyboard focus ring for SVG pipeline nodes */
.canvas-node-group:focus {
  outline: none;
}

.canvas-node-group:focus-visible .canvas-node-rect {
  stroke: var(--focus-ring);
  stroke-width: 3.5px;
}

.canvas-node-group.active .node-header-bg {
  fill: var(--accent-yellow);
}

.canvas-node-group.pulse-hit .canvas-node-rect {
  animation: nodeHitPulse 0.6s ease-out;
}

@keyframes nodeHitPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); filter: drop-shadow(8px 8px 0px var(--accent-orange)); }
  100% { transform: scale(1); }
}

/* Fallback Grid Track (Synchronized) */
.pipeline-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
  position: relative;
}

.node-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.node-title {
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 0.35rem;
}

.node-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.35;
}

/* Pipeline Detail Inspector Box */
.pipeline-inspector {
  padding: 1.75rem 2rem;
  border-radius: var(--border-radius-md);
  background-color: var(--bg-card);
}

.inspector-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2rem;
}

.inspector-info h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.inspector-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.2rem;
}

.inspector-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.spec-box {
  background-color: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.spec-box-label {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.spec-box-val {
  font-weight: 700;
  color: var(--text-primary);
  word-break: break-all;
}

.inspector-code {
  background-color: var(--code-bg);
  border: var(--border-width) solid var(--code-border);
  border-radius: var(--border-radius-sm);
  padding: 1rem 1.25rem;
  color: var(--code-text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  overflow-x: auto;
  line-height: 1.5;
  box-shadow: var(--shadow-sm);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ==========================================================================
   Interactive RAG Playground & Simulator
   ========================================================================== */

.simulator-card {
  padding: 2rem;
}

.sim-query-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.sim-input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 1.25rem;
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-pill);
  background-color: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  outline: none;
}

.sim-input:focus {
  border-color: var(--text-primary);
  box-shadow: var(--shadow-md);
}

.sim-disclaimer {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0 0 0.75rem;
}

.sim-empty-msg {
  font-weight: 700;
  color: var(--accent-orange);
  margin: 0 0 0.75rem;
}

.preset-queries {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.preset-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
}

.preset-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: var(--border-radius-pill);
  border: 1.5px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  box-shadow: 1.5px 1.5px 0px var(--border-color);
  transition: all var(--transition-fast);
}

.preset-btn:hover {
  background-color: var(--accent-yellow-light);
  transform: translate(-1px, -1px);
}

/* Simulator Settings Matrix */
.sim-controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  padding: 1rem 1.25rem;
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  margin-bottom: 2rem;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.control-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.pill-toggle-group {
  display: flex;
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-pill);
  background-color: var(--bg-card);
  overflow: hidden;
}

.pill-toggle-btn {
  border: none;
  background: none;
  padding: 0.35rem 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.pill-toggle-btn.active {
  background-color: var(--accent-yellow);
  color: var(--accent-ink);
  font-weight: 800;
}

/* Simulation Live Execution Stepper */
.sim-pipeline-stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.sim-stage-card {
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  background-color: var(--bg-card);
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  box-shadow: 2px 2px 0px var(--border-color);
}

.sim-stage-title {
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sim-stage-val {
  color: var(--text-secondary);
  line-height: 1.4;
  word-break: break-word;
}

/* Grounded Answer Card (RAG Generated) */
.answer-box {
  background-color: var(--accent-mint-light);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2rem;
  display: none;
}

.answer-box.active {
  display: block;
}

.answer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.answer-title {
  font-size: 1.15rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.answer-body {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.citations-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.citation-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: var(--border-radius-pill);
  box-shadow: 1.5px 1.5px 0px var(--border-color);
  color: var(--text-primary);
}

/* Retrieved Results List */
.retrieved-results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.results-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.result-card {
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.result-card-header {
  background-color: var(--bg-secondary);
  border-bottom: 2px solid var(--border-color);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.result-file {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.score-breakdown {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.result-code-view {
  background-color: var(--code-bg);
  color: var(--code-text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ==========================================================================
   Deep Dive Technical Showcases
   ========================================================================== */

.deep-dive-nav {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.deep-dive-panel {
  display: none;
}

.deep-dive-panel.active {
  display: block;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.comparison-box {
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  background-color: var(--bg-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.comparison-header {
  padding: 0.85rem 1.25rem;
  border-bottom: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.comparison-content {
  padding: 1.25rem;
}

/* ==========================================================================
   Evaluation Scoreboard & Golden Dataset
   ========================================================================== */

.eval-summary-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.eval-card {
  padding: 1.25rem;
  border-radius: var(--border-radius-md);
}

.eval-card.yellow { background-color: var(--accent-yellow); }
.eval-card.pink { background-color: var(--accent-pink); }
.eval-card.blue { background-color: var(--accent-blue); }
.eval-card.mint { background-color: var(--accent-mint); }
.eval-card.purple { background-color: var(--accent-purple); }
.eval-card { color: #193c3a; }

.eval-queries-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  margin-top: 1rem;
}

.eval-queries-table th,
.eval-queries-table td {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border-color);
  text-align: left;
}

.eval-queries-table th {
  background-color: var(--bg-secondary);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.eval-queries-table tr:nth-child(even) td {
  background-color: var(--bg-card-dot);
}

/* ==========================================================================
   Interactive Terminal Emulator
   ========================================================================== */

.terminal-window {
  background-color: #102724;
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-top-bar {
  background-color: #203c36;
  border-bottom: 2px solid #416057;
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.terminal-dots {
  display: flex;
  gap: 0.4rem;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid var(--code-border);
}

.terminal-dot.red { background-color: #cc9e8b; }
.terminal-dot.yellow { background-color: #cebe94; }
.terminal-dot.green { background-color: #8fb9a0; }

.terminal-tabs {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding: 0.5rem 1rem;
  background-color: #19332e;
  border-bottom: 2px solid #416057;
}

.terminal-tab-btn {
  background-color: #29473f;
  color: #b7cbc0;
  border: 1px solid var(--code-border);
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  font-size: 0.75rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-weight: 700;
  transition: all var(--transition-fast);
}

.terminal-tab-btn.active {
  background-color: var(--accent-yellow);
  color: var(--accent-ink);
  border-color: var(--accent-ink);
}

.terminal-body {
  padding: 1.5rem;
  color: #e4eee6;
  font-size: 0.88rem;
  line-height: 1.6;
  min-height: 280px;
  max-height: 480px;
  overflow-y: auto;
  white-space: pre-wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: var(--border-width) solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 3rem 1.5rem 4rem;
  margin-top: 5rem;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-credit {
  font-size: 0.95rem;
  font-weight: 600;
}

.footer-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Explanatory content and shared overflow boundaries */
[hidden] { display: none !important; }
a { color: inherit; text-underline-offset: 0.18em; }
:focus-visible { outline: 3px solid var(--text-primary); outline-offset: 4px; }
section, .result-card { scroll-margin-top: 180px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.skip-link { position: fixed; top: -100px; left: 1rem; z-index: 100; padding: 1rem; background: var(--bg-card); }
.skip-link:focus { top: 1rem; }
.quickstart-command { display: flex; align-items: center; gap: 0.5rem; max-width: 100%; min-width: 0; }
.quickstart-command code { min-width: 0; overflow-x: auto; white-space: nowrap; padding: 0.65rem; font-size: 0.8rem; border: 2px solid var(--border-color); border-radius: 8px; background: var(--bg-card); }
.quickstart-command button { flex-shrink: 0; }
.deployment-grid, .three-column-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.status-card { padding: 1.5rem; overflow-wrap: anywhere; }
.status-card h3 { margin-bottom: 0.75rem; }
.status-card p, .status-card ul { margin: 0.75rem 0; }
.status-card ul { padding-left: 1.25rem; }
.status-card li + li { margin-top: 0.5rem; }
.boundary-card { padding: 1.25rem; }
.boundary-card h3 { margin: 0.75rem 0; font-size: 1.12rem; }
.boundary-card p { font-size: 0.9rem; }
.boundary-transport { margin-top: 1rem; font-weight: 700; color: var(--text-secondary); }
.storage-bridge { display: flex; align-items: center; justify-content: center; gap: 1rem; padding: 1.2rem; margin: 1rem 0; text-align: center; background: var(--accent-mint-light); }
.storage-bridge small { display: block; font-weight: 500; }
.learning-note, .snippet-label { font-size: 0.88rem; color: var(--text-secondary); margin: 0.8rem 0 1.25rem; }
.svg-boundary-label, .svg-route-label { fill: var(--text-secondary); font-family: var(--font-mono); font-size: 10px; font-weight: 700; }
.execution-path { padding: 1rem; border-left: 4px solid var(--text-primary); background: var(--bg-secondary); margin-bottom: 1.25rem; overflow-wrap: anywhere; }
.sim-stage-card.is-skipped { background: var(--bg-secondary); border-style: dashed; box-shadow: none; }
.sim-stage-card.is-skipped .nb-badge { background: var(--bg-card); color: var(--text-secondary); }
.sim-stage-title, .answer-header, .answer-title, .result-file, .score-breakdown, .retrieved-results-head, .comparison-header { flex-wrap: wrap; gap: 0.6rem; }
.sim-input, .control-group, .sim-stage-card, .comparison-header > div, .inspector-info, .header-inner > *, .terminal-top-bar > * { min-width: 0; }
.sim-stage-card, .result-file, .answer-title, .citation-pill, .spec-box, .comparison-header, .pipeline-mobile-sub { overflow-wrap: anywhere; }
.result-file > span, .answer-title > span { max-width: 100%; }
.nb-badge { white-space: normal; }
.sim-stage-title .nb-badge { font-size: 0.68rem; }
.answer-body p, .answer-body ol { margin-bottom: 1rem; }
.answer-body ol { padding-left: 1.4rem; }
.answer-body code { font-size: 0.9em; overflow-wrap: anywhere; }
.answer-body li + li { margin-top: 0.6rem; }
.result-card:target, .result-card:focus { outline: 3px solid var(--text-primary); outline-offset: 4px; }
.walkthrough-controls { display: flex; flex-wrap: wrap; gap: 0.65rem; margin: 1.25rem 0; }
.walkthrough-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; list-style: none; }
.walkthrough-list > li { padding: 1.5rem; }
.walkthrough-list > li:last-child { grid-column: 1 / -1; }
.walkthrough-list h3 { margin-bottom: 0.75rem; }
.walkthrough-list p { margin-bottom: 1rem; }
.setup-list button { margin-top: 0.85rem; }
.setup-help { padding: 1.25rem; margin-top: 1.25rem; }
.setup-help summary { cursor: pointer; font-weight: 800; }
.setup-help ul { margin: 1rem 0; padding-left: 1.25rem; }
.setup-help li + li { margin-top: 0.75rem; }
.walkthrough-list pre { font: 0.8rem/1.6 var(--font-mono); background: var(--code-bg); color: var(--code-text); border-radius: 8px; padding: 1rem; overflow-x: auto; }
.walkthrough-list blockquote { padding: 1rem; border-left: 4px solid var(--text-primary); background: var(--accent-mint-light); margin-bottom: 1rem; }
.walkthrough-list .has-failure { border-style: dashed; }
.failure-message { padding: 1rem; background: var(--accent-orange-light); border-left: 4px solid var(--text-primary); }
.rrf-example { border-top: 2px solid var(--border-color); margin-top: 2rem; padding-top: 1.5rem; }
.rrf-example h3 { margin-bottom: 0.65rem; }
.table-scroll { max-width: 100%; overflow-x: auto; }
.table-scroll caption { text-align: left; padding-bottom: 0.6rem; font-size: 0.8rem; }
.terminal-body { overflow-x: auto; overflow-wrap: anywhere; }
.terminal-tab-btn { flex-shrink: 0; }
.terminal-top-bar { flex-wrap: wrap; gap: 0.65rem; }

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .pipeline-track { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .inspector-grid { grid-template-columns: 1fr; }
  .comparison-grid { grid-template-columns: 1fr; }
  .eval-summary-cards { grid-template-columns: repeat(3, 1fr); }
  .sim-pipeline-stages { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 1.4rem; }
  .top-bar { position: static; }
  section, .result-card { scroll-margin-top: 1rem; }
  .deployment-grid, .three-column-grid, .walkthrough-list, .sim-pipeline-stages { grid-template-columns: minmax(0, 1fr); }
  .simulator-card, .walkthrough-list > li { padding: 1rem; }
  .answer-box { padding: 1rem; }
  .quickstart-command { width: 100%; flex-wrap: wrap; }
  .quickstart-command code { flex: 1 1 100%; }
  .storage-bridge { flex-direction: column; }
  .storage-bridge > span[aria-hidden] { transform: rotate(90deg); }
  .pill-toggle-group { flex-wrap: wrap; border-radius: 14px; }
  .sim-controls-row { padding: 0.8rem; }
  .nb-btn { white-space: normal; }
  .stream-actions { flex-wrap: wrap; }
  .result-card-header, .result-code-view { padding: 0.85rem; }
  .comparison-header, .comparison-content { padding: 1rem; }
  .terminal-body { padding: 1rem; }
  .header-inner { gap: 0.65rem; }
  .pipeline-track { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr; }
  .eval-summary-cards { grid-template-columns: repeat(2, 1fr); }
  .sim-query-bar { flex-direction: column; }
  .top-bar-container { flex-direction: column; align-items: flex-start; }

  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
  }
  .nav-toggle { display: inline-flex; }
  .nav-pills {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
  }
  .nav-pills.is-open { display: flex; }
  .nav-pills .nav-link,
  .nav-pills .nb-btn {
    width: 100%;
    justify-content: flex-start;
  }

  .pipeline-canvas-wrapper,
  .stream-anim-only,
  .flow-legend {
    display: none;
  }
  .pipeline-mobile-list { display: flex; }
  .stream-toolbar { padding: 0.65rem 0.85rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
  .flow-bus-line { animation: none !important; }
  .pulse-dot { animation: none !important; }
  .canvas-node-group.pulse-hit { animation: none !important; }
}