/* ==========================================================================
   Zero Mandate Engine (ZME) — Style Sheet
   Premium Dark-Mode Developer Documentation & Spec Hub
   ========================================================================== */

/* ---- Design Tokens ---- */
:root {
  --bg-primary: #000000;
  --bg-secondary: #09090b;
  --bg-tertiary: #121214;
  --bg-glass: rgba(9, 9, 11, 0.7);
  
  --border-color: #27272a;
  --border-glow: #3f3f46;
  
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #52525b;
  
  --accent-cyan: #22d3ee;
  --accent-cyan-glow: rgba(34, 211, 238, 0.15);
  --accent-amber: #f59e0b;
  --accent-amber-glow: rgba(245, 158, 11, 0.15);
  --accent-rose: #f43f5e;
  --accent-rose-glow: rgba(244, 63, 94, 0.15);
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  
  --transition-speed: 0.3s;
}

/* ---- Base Styles & Reset ---- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ---- Background Effects ---- */
body::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: 
    linear-gradient(to right, rgba(39, 39, 42, 0.1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(39, 39, 42, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: 1;
}

.ambient-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
  pointer-events: none;
  z-index: 0;
  transition: transform 5s ease-in-out;
}

.cyan-glow {
  background-color: var(--accent-cyan);
  top: -100px;
  right: -50px;
}

.amber-glow {
  background-color: var(--accent-amber);
  bottom: 10%;
  left: -100px;
}

/* ---- Text Helpers ---- */
.font-mono { font-family: var(--font-mono); }
.cyan-text { color: var(--accent-cyan); }
.amber-text { color: var(--accent-amber); }
.rose-text { color: var(--accent-rose); }
.bold { font-weight: 600; }

/* ---- Layout Components ---- */
#app {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.main-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color) 20%, var(--border-color) 80%, transparent);
  margin: 64px 0;
}

/* ---- Top Status Header ---- */
.system-header {
  height: 48px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.system-status-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-dot 2.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.header-right {
  display: flex;
  gap: 16px;
}

.diagnostic-pill {
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 3px 8px;
  border-radius: 4px;
}

/* ---- Hero Section ---- */
.hero-section {
  padding: 80px 0 40px 0;
  display: flex;
  justify-content: center;
}

.hero-content {
  max-width: 800px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  background: linear-gradient(180deg, #fff 40%, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--text-secondary);
  font-weight: 300;
  margin-bottom: 40px;
  line-height: 1.4;
}

.lead-paragraph {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: justify;
  border-left: 2px solid var(--border-color);
  padding-left: 24px;
  margin: 32px 0;
}

/* ---- NVIDIA Inception Callout ---- */
.nvidia-callout {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: 3px solid #76b900;
  border-radius: 6px;
  padding: 24px;
  text-align: left;
  margin: 0 auto 40px auto;
  max-width: 720px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.nvidia-badge-wrapper {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.nvidia-badge-img {
  height: 42px;
  width: auto;
  display: block;
}

.nvidia-copy {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- Document Sections General ---- */
.doc-section {
  padding: 24px 0;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.section-num {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 90ch;
}

/* ---- Glass & Panel Design ---- */
.glass-panel {
  background-color: var(--bg-glass);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ---- SECTION 1: Pipeline Table ---- */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--bg-secondary);
}

.pipeline-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 14px;
}

.pipeline-table th, 
.pipeline-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.pipeline-table th {
  background-color: var(--bg-tertiary);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pipeline-table tbody tr {
  transition: background-color var(--transition-speed);
}

.pipeline-table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

.stage-name {
  font-weight: 600;
}

.stage-num {
  color: var(--text-muted);
  margin-right: 8px;
}

/* ---- SECTION 2: Physics Integration ---- */
.physics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.physics-card {
  border: 1px solid var(--border-color);
  background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
  border-radius: 8px;
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.physics-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), transparent);
  opacity: 0.3;
}

.card-num {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.card-copy {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.card-footer-copy {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-top: 1px dashed var(--border-color);
  padding-top: 16px;
}

/* ---- Scientific Equations Formatting ---- */
.equation-box {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.eq-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.eq-math {
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

/* Fractional display styling */
.fraction {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  vertical-align: middle;
  padding: 0 4px;
}

.numerator {
  border-bottom: 1px solid var(--text-secondary);
  padding: 0 4px 2px 4px;
  font-size: 17px;
  text-align: center;
}

.denominator {
  padding: 2px 4px 0 4px;
  font-size: 17px;
  text-align: center;
}

.math-parenthesis {
  font-size: 36px;
  font-weight: 200;
  line-height: 1;
}

/* ---- LAB SIMULATION DEMO PANEL ---- */
.lab-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 24px;
}

@media (max-width: 1024px) {
  .lab-layout {
    grid-template-columns: 1fr;
  }
}

/* Telemetry Dashboard Panel */
.telemetry-grid-data {
  border-top: 1px solid var(--border-color);
}

.reading-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  font-size: 11px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.02);
  transition: background-color 0.2s;
}

.reading-row span {
  text-align: right;
}

.reading-row span:first-child {
  text-align: left;
}

.header-row {
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  text-transform: uppercase;
}

.reading-rows-container {
  max-height: 180px;
  overflow-y: auto;
}

.reading-row-data:hover,
.reading-row-data.active {
  background-color: var(--accent-cyan-glow);
  cursor: pointer;
}

.reading-row-data.active {
  border-left: 2px solid var(--accent-cyan);
}

/* Dynamic Graph Styling */
.chart-container {
  padding: 16px;
  position: relative;
}

.grid-line {
  stroke: rgba(255, 255, 255, 0.04);
  stroke-width: 1;
}

.axis-line {
  stroke: var(--border-color);
  stroke-width: 1.5;
}

.chart-path {
  fill: none;
  stroke: var(--accent-rose);
  stroke-width: 2.5;
  stroke-linecap: round;
  filter: drop-shadow(0 0 4px var(--accent-rose));
}

.chart-point {
  fill: var(--bg-primary);
  stroke: var(--accent-rose);
  stroke-width: 2;
  transition: r var(--transition-speed), fill var(--transition-speed);
  cursor: pointer;
}

.chart-point:hover,
.chart-point.active {
  r: 6;
  fill: var(--accent-rose);
}

.axis-label {
  font-family: var(--font-mono);
  font-size: 8px;
  fill: var(--text-muted);
}

.chart-tooltip {
  position: absolute;
  background-color: rgba(9, 9, 11, 0.95);
  border: 1px solid var(--accent-rose);
  padding: 6px 12px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

/* Media Showcase Tabs */
.viewer-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-tertiary);
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 16px;
  cursor: pointer;
  transition: color var(--transition-speed), border-bottom-color var(--transition-speed);
}

.tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-cyan);
}

.tab-content {
  display: none;
  padding: 20px;
}

.tab-content.active {
  display: block;
}

/* Simulation Video Controls */
.sim-selector, 
.render-selector {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
}

.sim-btn, 
.render-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  cursor: pointer;
  transition: border-color var(--transition-speed), color var(--transition-speed);
}

.sim-btn.active, 
.render-btn.active {
  border-color: var(--accent-cyan);
  color: #fff;
  background-color: var(--accent-cyan-glow);
}

.video-viewport {
  position: relative;
  aspect-ratio: 16/9;
  background-color: #000;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
}

.video-viewport video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  background-color: rgba(0, 0, 0, 0.7);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 4px;
  pointer-events: none;
}

.video-controls {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  align-items: center;
  gap: 20px;
  margin-top: 16px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 6px;
}

@media (max-width: 600px) {
  .video-controls {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

.control-btn {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
}

.speed-control {
  font-size: 10px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.speed-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: 3px;
  cursor: pointer;
}

.speed-btn.active {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.frame-scrub {
  display: flex;
  gap: 6px;
}

.scrub-btn {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 9px;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
}

.scrub-btn:hover {
  border-color: var(--text-muted);
  color: #fff;
}

/* Master Renders Canvas zoom and drag */
.image-viewer-wrapper {
  position: relative;
  background-color: #000;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  overflow: hidden;
}

.zoom-instructions {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 10;
  font-size: 9px;
  color: var(--text-muted);
  background-color: rgba(0, 0, 0, 0.7);
  padding: 4px 8px;
  border-radius: 3px;
  pointer-events: none;
}

.canvas-container {
  width: 100%;
  aspect-ratio: 16/9;
  cursor: grab;
}

.canvas-container:active {
  cursor: grabbing;
}

.canvas-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.zoom-controls {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  z-index: 10;
}

.zoom-btn {
  width: 32px;
  height: 32px;
  background-color: rgba(0, 0, 0, 0.7);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 14px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, color 0.2s;
}

.zoom-btn:hover {
  border-color: var(--accent-cyan);
  color: #fff;
}

#zoom-reset {
  width: auto;
  padding: 0 10px;
  font-size: 9px;
}

/* ---- SECTION 3: Data Schemas Explorer ---- */
.schema-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-tertiary);
}

.schema-tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 16px 24px;
  cursor: pointer;
  transition: color var(--transition-speed), border-bottom-color var(--transition-speed);
}

.schema-tab-btn.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent-cyan);
}

.schema-metadata {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(255, 255, 255, 0.01);
}

.schema-pre {
  padding: 24px;
  overflow-x: auto;
  max-height: 400px;
  overflow-y: auto;
  background-color: #020203;
}

.schema-pre code {
  font-size: 13px;
  line-height: 1.5;
}

/* JSON syntax styling classes */
.json-key { color: #818cf8; } /* Indigo */
.json-string { color: #34d399; } /* Green */
.json-number { color: #fbbf24; } /* Amber */
.json-boolean { color: #f472b6; } /* Pink */
.json-null { color: var(--text-muted); }

/* ---- SECTION 4: Corporate Governance ---- */
.governance-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

@media (max-width: 900px) {
  .governance-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.gov-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.gov-copy {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.parent-portal-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 12px;
  color: var(--accent-amber);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.2s, filter 0.2s;
}

.parent-portal-link:hover {
  filter: brightness(1.2);
}

.directory-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.director-card {
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 20px 24px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.director-info {
  display: flex;
  flex-direction: column;
}

.director-name {
  font-size: 16px;
  font-weight: 600;
}

.director-role {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 2px;
}

.director-links {
  display: flex;
  gap: 12px;
  font-size: 10px;
  align-items: center;
}

.dir-link {
  color: var(--accent-cyan);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: filter var(--transition-speed);
}

.dir-link:hover {
  filter: brightness(1.2);
}

.divider {
  color: var(--border-color);
}

/* ---- SYSTEM FOOTER ---- */
.system-footer {
  margin-top: 80px;
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
  font-size: 10px;
  color: var(--text-muted);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 600px) {
  .footer-grid {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}