:root {
  --paper: #fbfaf7;
  --paper-card: #ffffff;
  --paper-border: #e5e1d8;
  --ink: #111111;
  --ink-muted: #52525b;
  --ink-subtle: #71717a;

  /* Monochrome Carbon Workbench Tokens */
  --screen-bg: #0a0a0c;
  --screen-panel: #111114;
  --screen-well: #09090b;
  --screen-border: rgba(255, 255, 255, 0.09);
  --screen-border-strong: rgba(255, 255, 255, 0.18);
  --screen-text: #f4f4f5;
  --screen-muted: #a1a1aa;
  --screen-dim: #71717a;

  /* Pastel Semantic Badges (Exterior Paper & Pill Tags) */
  --lavender-bg: #f3e8ff;
  --lavender-text: #6b21a8;
  --lavender-border: #e9d5ff;

  --sage-bg: #d1fae5;
  --sage-text: #065f46;
  --sage-border: #a7f3d0;

  --peach-bg: #ffedd5;
  --peach-text: #9a3412;
  --peach-border: #fed7aa;

  --sky-bg: #e0f2fe;
  --sky-text: #0369a1;
  --sky-border: #bae6fd;

  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-mono: 'Geist Mono', 'IBM Plex Mono', monospace;
  --content-width: min(1140px, calc(100vw - 48px));
}

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

html {
  scroll-behavior: smooth;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

/* Subtle architectural vertical guide lines */
body::before,
body::after {
  content: '';
  position: fixed;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(17, 17, 17, 0.07);
  pointer-events: none;
  z-index: 1;
}
body::before {
  left: calc((100vw - var(--content-width)) / 2);
}
body::after {
  right: calc((100vw - var(--content-width)) / 2);
}

/* Sticky Glass Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(251, 250, 247, 0.86);
  border-bottom: 1px solid var(--paper-border);
}

.navbar-inner {
  width: var(--content-width);
  margin: 0 auto;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 28px;
  height: 28px;
  background: var(--ink);
  color: #ffffff;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.nav-links a {
  text-decoration: none;
  color: var(--ink-muted);
  font-size: 13px;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--ink);
}

.nav-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 4px;
  border: 1px solid var(--paper-border);
  background: var(--paper-card);
  color: var(--ink) !important;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Container */
.container {
  width: var(--content-width);
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* Hero Section */
.hero {
  padding: 64px 0 44px;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}

.hero-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.pastel-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.badge-choice {
  background: var(--lavender-bg);
  color: var(--lavender-text);
  border-color: var(--lavender-border);
}

.badge-noul {
  background: var(--sage-bg);
  color: var(--sage-text);
  border-color: var(--sage-border);
}

.badge-score {
  background: var(--peach-bg);
  color: var(--peach-text);
  border-color: var(--peach-border);
}

.badge-box {
  background: var(--sky-bg);
  color: var(--sky-text);
  border-color: var(--sky-border);
}

.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin-bottom: 18px;
  color: var(--ink);
}

.hero h1 em {
  font-family: var(--font-serif);
  font-weight: 600;
  font-style: italic;
  color: #9a3412;
}

.hero-sub {
  font-size: 17px;
  color: var(--ink-muted);
  max-width: 660px;
  margin: 0 auto 28px;
}

.install-bar {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: #111114;
  color: #f4f4f5;
  padding: 10px 16px;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  border: 1px solid rgba(17, 17, 17, 0.2);
  box-shadow: 0 10px 24px -8px rgba(0, 0, 0, 0.14);
}

.install-bar code {
  color: #e4e4e7;
}

.copy-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #f4f4f5;
  border-radius: 5px;
  padding: 5px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: background 0.15s ease;
}

.copy-btn:hover {
  background: rgba(255, 255, 255, 0.16);
}

/* Monochrome Carbon Workbench (#workbench) */
.workbench-section {
  margin: 12px 0 64px;
}

.workbench {
  background: var(--screen-bg);
  color: var(--screen-text);
  border-radius: 14px;
  border: 1px solid rgba(17, 17, 17, 0.85);
  box-shadow: 0 28px 60px -16px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

/* Top Workbench Chrome Bar */
.wb-header {
  background: var(--screen-panel);
  border-bottom: 1px solid var(--screen-border);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.wb-title-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.wb-dots {
  display: flex;
  gap: 6px;
}

.wb-dots span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.wb-title {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--screen-text);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.wb-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.wb-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--screen-muted);
}

.wb-select,
.wb-input {
  background: var(--screen-well);
  color: var(--screen-text);
  border: 1px solid var(--screen-border-strong);
  border-radius: 6px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  outline: none;
}

.wb-select:focus,
.wb-input:focus {
  border-color: rgba(255, 255, 255, 0.36);
}

.wb-btn-primary {
  background: #f4f4f5;
  color: #111111;
  border: 1px solid #ffffff;
  border-radius: 6px;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.15s ease;
}

.wb-btn-primary:hover {
  opacity: 0.9;
}

.wb-btn-primary:disabled {
  opacity: 0.5;
  cursor: wait;
}

.wb-btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #e4e4e7;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  padding: 6px 11px;
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.wb-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Active HF Dataset Choices Strip */
.wb-choices-bar {
  background: var(--screen-well);
  border-bottom: 1px solid var(--screen-border);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.choices-list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.choice-chip {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e4e4e7;
}

.choice-chip.active-winner {
  background: #f4f4f5;
  color: #111111;
  border-color: #ffffff;
  font-weight: 600;
}

/* Workbench 3-Column Grid */
.wb-grid {
  display: grid;
  grid-template-columns: 270px 1fr 370px;
  min-height: 510px;
}

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

/* Column 1: MRI Slice Carousel & Upload */
.wb-sidebar {
  background: var(--screen-panel);
  border-right: 1px solid var(--screen-border);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-heading {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--screen-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sample-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sample-card {
  background: var(--screen-well);
  border: 1px solid var(--screen-border);
  border-radius: 8px;
  padding: 9px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  text-align: left;
  color: var(--screen-text);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.sample-card:hover {
  border-color: rgba(255, 255, 255, 0.24);
}

.sample-card.active {
  background: rgba(255, 255, 255, 0.07);
  border-color: #f4f4f5;
}

.sample-thumb {
  width: 46px;
  height: 46px;
  border-radius: 5px;
  object-fit: cover;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.12);
  flex-shrink: 0;
}

.sample-meta {
  overflow: hidden;
  flex: 1;
}

.sample-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--screen-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sample-gt {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--screen-muted);
  margin-top: 2px;
}

.upload-zone {
  margin-top: auto;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  background: var(--screen-well);
}

.upload-zone p {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--screen-muted);
  margin-bottom: 8px;
}

/* Column 2: Center MRI Viewport & Box Overlay */
.wb-viewport {
  background: #050507;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.viewport-top {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--screen-muted);
}

.mri-stage {
  position: relative;
  margin: 16px auto;
  max-width: 380px;
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mri-stage img {
  width: 100%;
  height: 100%;
  object-fit: fill;
  display: block;
}

/* Bounding Box Overlay from TypeSafe `box` Primitive */
.lesion-box-overlay {
  position: absolute;
  border: 1.5px solid #f4f4f5;
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.85), inset 0 0 0 1px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Crosshair corner ticks */
.lesion-box-overlay::before {
  content: attr(data-box-label);
  position: absolute;
  top: -22px;
  left: -1px;
  background: #f4f4f5;
  color: #09090b;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  white-space: nowrap;
}

.viewport-footer {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--screen-border);
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--screen-muted);
}

/* Column 3: Parallel Judgments Telemetry */
.wb-telemetry {
  background: var(--screen-panel);
  border-left: 1px solid var(--screen-border);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.telemetry-card {
  background: var(--screen-well);
  border: 1px solid var(--screen-border);
  border-radius: 8px;
  padding: 12px 14px;
}

.t-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.primitive-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #e4e4e7;
}

.verdict-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
}

.verdict-main {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #f4f4f5;
}

.verdict-prob {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #e4e4e7;
}

.meter-track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin: 6px 0;
}

.meter-fill {
  height: 100%;
  background: #f4f4f5;
  border-radius: 3px;
  transition: width 0.25s ease;
}

/* Choice Probability Bars */
.prob-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-top: 8px;
}

.prob-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.prob-item-top {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--screen-muted);
}

.prob-item-top.winner {
  color: #f4f4f5;
  font-weight: 600;
}

/* Triage Routing Control */
.triage-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #f4f4f5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
}

.threshold-slider-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--screen-muted);
}

.threshold-slider-row input[type="range"] {
  flex: 1;
  accent-color: #f4f4f5;
}

/* Bottom Live Payload Inspector */
.wb-payload-drawer {
  border-top: 1px solid var(--screen-border);
  background: var(--screen-well);
  padding: 14px 20px;
}

.payload-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 10px;
}

@media (max-width: 860px) {
  .payload-grid {
    grid-template-columns: 1fr;
  }
}

.code-box {
  background: #050507;
  border: 1px solid var(--screen-border);
  border-radius: 6px;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #d4d4d8;
  overflow-x: auto;
  max-height: 210px;
  line-height: 1.5;
}

/* Exterior Paper Sections (Why, Blueprint, Code) */
.section {
  padding: 56px 0;
  border-top: 1px solid var(--paper-border);
}

.section-header {
  max-width: 680px;
  margin-bottom: 32px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ink-subtle);
  margin-bottom: 8px;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ink);
  margin-bottom: 10px;
}

.section-desc {
  color: var(--ink-muted);
  font-size: 15px;
}

.cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 860px) {
  .cards-3 {
    grid-template-columns: 1fr;
  }
}

.paper-card {
  background: var(--paper-card);
  border: 1px solid var(--paper-border);
  border-radius: 10px;
  padding: 22px;
}

.paper-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin: 12px 0 8px;
  letter-spacing: -0.01em;
}

.paper-card p {
  font-size: 14px;
  color: var(--ink-muted);
}

/* Blueprint Container */
.blueprint-frame {
  background: #ffffff;
  border: 1.2px solid #000000;
  border-radius: 10px;
  padding: 20px;
  overflow-x: auto;
}

/* Code Recipes Grid */
.recipes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 860px) {
  .recipes-grid {
    grid-template-columns: 1fr;
  }
}

.recipe-card {
  background: #111114;
  color: #f4f4f5;
  border-radius: 10px;
  border: 1px solid rgba(17, 17, 17, 0.9);
  overflow: hidden;
}

.recipe-head {
  padding: 10px 16px;
  background: #18181c;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 11px;
  color: #a1a1aa;
  display: flex;
  justify-content: space-between;
}

.recipe-pre {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  color: #e4e4e7;
  overflow-x: auto;
}

/* Syntax Highlighting Tokens */
.tok-kw {
  color: #d8b4fe;
  font-weight: 500;
}

.tok-fn {
  color: #7dd3fc;
}

.tok-str {
  color: #86efac;
}

.tok-num {
  color: #fdba74;
}

.tok-prop {
  color: #f9a8d4;
}

.tok-cm {
  color: #71717a;
  font-style: italic;
}

.tok-punc {
  color: #a1a1aa;
}

/* Footer */
.footer {
  background: #111114;
  color: #a1a1aa;
  padding: 28px 0;
  margin-top: 48px;
  font-size: 13px;
}

.footer-inner {
  width: var(--content-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer a {
  color: #f4f4f5;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}