/* ============================================
   LIFECORE v0.1 — Documentation Website Styles
   ============================================ */

/* --- CSS Variables --- */
:root {
  --bg-root: #0a0b0d;
  --bg-surface: #0f1114;
  --bg-surface-2: #141619;
  --bg-surface-3: #1a1d21;
  --bg-surface-4: #1f2226;
  --bg-hover: #1e2125;
  --bg-active: #252830;

  --text-primary: #e8e6e3;
  --text-secondary: #9b9a97;
  --text-tertiary: #6b6a67;
  --text-muted: #4a4945;

  --border-subtle: #1e2024;
  --border-default: #262830;
  --border-strong: #353840;

  --accent-green: #3d9a50;
  --accent-green-dim: #2d7a3d;
  --accent-green-glow: rgba(61, 154, 80, 0.15);
  --accent-green-text: #5cb86e;

  --accent-cyan: #4a9ba5;
  --accent-cyan-dim: #3a7b85;
  --accent-cyan-glow: rgba(74, 155, 165, 0.12);

  --accent-amber: #b8944f;
  --accent-red: #b85450;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --max-width: 1400px;
  --sidebar-width: 260px;
  --right-sidebar-width: 220px;
  --nav-height: 64px;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);

  --transition-fast: 120ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 350ms ease;

  --nav-bg: rgba(10, 11, 13, 0.82);
  --chip-bg: rgba(15, 17, 20, 0.8);
}

html[data-theme='light'] {
  --bg-root: #f4f4f2;
  --bg-surface: #ffffff;
  --bg-surface-2: #f8f8f6;
  --bg-surface-3: #efefec;
  --bg-surface-4: #e6e6e2;
  --bg-hover: #eeeeea;
  --bg-active: #e3e7e1;

  --text-primary: #1c1c18;
  --text-secondary: #56564f;
  --text-tertiary: #7a7a70;
  --text-muted: #a3a399;

  --border-subtle: #ebebe7;
  --border-default: #dbdbd5;
  --border-strong: #c6c6be;

  --accent-green: #2e7d3f;
  --accent-green-dim: #236233;
  --accent-green-glow: rgba(46, 125, 63, 0.09);
  --accent-green-text: #2a7c3d;

  --accent-cyan: #347e88;
  --accent-cyan-dim: #2a6871;
  --accent-cyan-glow: rgba(52, 126, 136, 0.08);

  --accent-amber: #a07c3a;
  --accent-red: #a0433f;

  --shadow-sm: 0 1px 2px rgba(20, 20, 16, 0.08);
  --shadow-md: 0 4px 12px rgba(20, 20, 16, 0.1);
  --shadow-lg: 0 8px 32px rgba(20, 20, 16, 0.14);

  --nav-bg: rgba(248, 248, 246, 0.85);
  --chip-bg: rgba(255, 255, 255, 0.85);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-padding-top: calc(var(--nav-height) + 32px);
}

body {
  font-family: var(--font-sans);
  background: var(--bg-root);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--accent-green);
  color: #fff;
}

.mono { font-family: var(--font-mono); font-size: 13px; color: var(--text-primary); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* ============================================
   TOP NAVIGATION
   ============================================ */
.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-base), border-bottom-color var(--transition-base);
}

.top-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-left { display: flex; align-items: center; gap: 40px; }
.nav-right { display: flex; align-items: center; gap: 16px; }

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

.brand-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.brand-version {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--accent-green-text);
  background: var(--accent-green-glow);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(61, 154, 80, 0.2);
}

.nav-links { display: flex; align-items: center; gap: 4px; }

.nav-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
  letter-spacing: 0.01em;
}

.nav-link:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-link.active { color: var(--text-primary); background: var(--bg-surface-3); }

.nav-status {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 4px 10px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
}

.nav-external {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-tertiary);
  padding: 5px 10px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  letter-spacing: 0.02em;
}

.nav-external:hover { color: var(--text-primary); border-color: var(--border-strong); }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-tertiary);
  transition: all var(--transition-fast);
}

.theme-toggle:hover { color: var(--text-primary); border-color: var(--border-default); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent-green); outline-offset: 2px; }

.theme-toggle .icon-sun { display: none; }

html[data-theme='light'] .theme-toggle .icon-sun { display: block; }
html[data-theme='light'] .theme-toggle .icon-moon { display: none; }

.nav-search-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-tertiary);
  transition: all var(--transition-fast);
}

.nav-search-btn:hover { color: var(--text-secondary); border-color: var(--border-default); }

.search-shortcut {
  font-family: var(--font-mono);
  font-size: 11px;
  opacity: 0.6;
}

/* --- Mobile Menu Button --- */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  width: 36px;
  height: 36px;
  justify-content: center;
  align-items: center;
}

.mobile-menu-btn span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: all var(--transition-base);
}

.mobile-menu-btn.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-btn.open span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 999;
  padding: 16px 32px;
}

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

.mobile-menu-links { display: flex; flex-direction: column; gap: 4px; }

.mobile-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-link:hover, .mobile-link.active { color: var(--text-primary); background: var(--bg-surface-3); }

/* ============================================
   PAGE CONTENT SHELL
   ============================================ */
.page-content {
  min-height: 100vh;
  padding-top: var(--nav-height);
}

/* ============================================
   LAYOUT: Documentation (sidebar + content + right sidebar)
   ============================================ */
.layout-doc {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr var(--right-sidebar-width);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  gap: 0;
}

.layout-doc .left-sidebar {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  padding: 32px 24px 32px 0;
  border-right: 1px solid var(--border-subtle);
}

.layout-doc .main-content {
  padding: 32px 48px 80px;
  min-width: 0;
}

.layout-doc .right-sidebar {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  padding: 32px 0 32px 24px;
  border-left: 1px solid var(--border-subtle);
}

/* Left sidebar nav */
.sidebar-section { margin-bottom: 24px; }

.sidebar-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 10px;
  padding-left: 12px;
}

.sidebar-link {
  display: block;
  font-size: 13.5px;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  border-left: 2px solid transparent;
  margin-left: -2px;
}

.sidebar-link:hover { color: var(--text-primary); background: var(--bg-hover); }
.sidebar-link.active { color: var(--text-primary); background: var(--bg-surface-3); border-left-color: var(--accent-green); }

/* Right sidebar - On this page */
.toc-title {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 14px;
}

.toc-link {
  display: block;
  font-size: 12.5px;
  color: var(--text-tertiary);
  padding: 4px 0 4px 12px;
  border-left: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
  margin-left: 0;
  line-height: 1.5;
}

.toc-link:hover { color: var(--text-secondary); }
.toc-link.active { color: var(--accent-green-text); border-left-color: var(--accent-green); }

/* ============================================
   FULL-WIDTH PAGE (no sidebars)
   ============================================ */
.layout-full {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.layout-full .main-content {
  padding: 48px 0 80px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse, var(--accent-green-glow) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.5;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-text { max-width: 640px; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-green-text);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.hero-eyebrow::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--accent-green);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 600;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.hero-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 520px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--accent-green);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  letter-spacing: 0.01em;
}

.btn-primary:hover { background: #47a85c; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(61, 154, 80, 0.3); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.btn-secondary:hover { color: var(--text-primary); border-color: var(--border-strong); background: var(--bg-surface-3); }

/* --- Hero Visualization --- */
.hero-visual {
  position: relative;
  aspect-ratio: 1;
  max-width: 480px;
  justify-self: end;
}

.chamber-viz {
  width: 100%;
  height: 100%;
  position: relative;
}

.chamber-frame {
  position: absolute;
  top: 10%;
  left: 15%;
  right: 15%;
  bottom: 10%;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  background: rgba(15, 17, 20, 0.6);
}

.chamber-frame::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 30%;
  right: 30%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-green-dim), transparent);
  border-radius: 2px;
}

/* Plant */
.plant-visual {
  position: absolute;
  bottom: 15%;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
}

.plant-stem {
  width: 2px;
  height: 80px;
  background: linear-gradient(to top, var(--accent-green-dim), var(--accent-green));
  position: relative;
}

.plant-leaf {
  position: absolute;
  width: 32px;
  height: 14px;
  background: var(--accent-green);
  border-radius: 50% 50% 50% 0;
  opacity: 0.8;
}

.plant-leaf.left { right: 2px; transform: rotate(-30deg); }
.plant-leaf.right { left: 2px; transform: rotate(30deg) scaleX(-1); }
.plant-leaf:nth-child(1) { top: 10px; }
.plant-leaf:nth-child(2) { top: 25px; }
.plant-leaf:nth-child(3) { top: 40px; width: 26px; height: 11px; }
.plant-leaf:nth-child(4) { top: 12px; }
.plant-leaf:nth-child(5) { top: 28px; }
.plant-leaf:nth-child(6) { top: 42px; width: 26px; height: 11px; }

.plant-pot {
  width: 40px;
  height: 20px;
  background: var(--bg-surface-4);
  border: 1px solid var(--border-default);
  border-radius: 0 0 4px 4px;
  margin-top: -1px;
}

/* Sensor nodes */
.sensor-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
}

.sensor-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan-glow);
  animation: pulse-dot 3s ease-in-out infinite;
}

.sensor-node:nth-child(4) .sensor-dot { animation-delay: 0.5s; }
.sensor-node:nth-child(5) .sensor-dot { animation-delay: 1s; }
.sensor-node:nth-child(6) .sensor-dot { animation-delay: 1.5s; }
.sensor-node:nth-child(7) .sensor-dot { animation-delay: 2s; }

@keyframes pulse-dot {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.3); }
}

.sensor-label {
  background: var(--chip-bg);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  white-space: nowrap;
}

/* Data lines */
.data-line {
  position: absolute;
  background: var(--border-subtle);
}

.data-line.h { height: 1px; }
.data-line.v { width: 1px; }

/* Light rays */
.light-ray {
  position: absolute;
  top: 9%;
  left: 35%;
  width: 30%;
  height: 60%;
  background: linear-gradient(180deg, rgba(61, 154, 80, 0.06) 0%, transparent 100%);
  clip-path: polygon(20% 0, 80% 0, 100% 100%, 0% 100%);
  pointer-events: none;
}

/* ============================================
   SYSTEM STATUS PANEL
   ============================================ */
.system-status {
  margin-top: 48px;
  padding: 24px 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: inline-flex;
  flex-direction: column;
  gap: 12px;
  min-width: 280px;
}

.status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.status-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent-green-text);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse-dot 2s ease-in-out infinite;
}

.status-rows { display: flex; flex-direction: column; gap: 6px; }

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  border-top: 1px solid var(--border-subtle);
}

.status-label {
  font-size: 12.5px;
  color: var(--text-secondary);
}

.status-value {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
}

/* ============================================
   SECTION HEADINGS
   ============================================ */
.section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-green-text);
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.75;
  margin-bottom: 48px;
}

/* --- Page header (documentation pages) --- */
.page-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border-subtle);
}

.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-green-text);
  margin-bottom: 16px;
}

.page-title {
  font-family: var(--font-serif);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.page-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 600px;
}

/* --- Section within doc pages --- */
.doc-section {
  margin-bottom: 56px;
}

.doc-section-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-top: 8px;
}

.doc-section-title .tech-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-left: 12px;
  vertical-align: middle;
}

.doc-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 700px;
}

/* ============================================
   CALLOUT
   ============================================ */
.callout {
  padding: 24px 28px;
  border-radius: var(--radius-md);
  margin: 24px 0;
  border: 1px solid;
}

.callout-green {
  background: var(--accent-green-glow);
  border-color: rgba(61, 154, 80, 0.2);
}

.callout-green .callout-text {
  font-family: var(--font-serif);
  font-size: 18px;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.6;
}

.callout-info {
  background: var(--accent-cyan-glow);
  border-color: rgba(74, 155, 165, 0.2);
}

.callout-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.callout-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-green-text);
  margin-bottom: 8px;
}

/* ============================================
   CARDS
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  padding: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--border-default);
  background: var(--bg-surface-2);
}

.card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 18px;
}

.card-icon.green { background: var(--accent-green-glow); color: var(--accent-green-text); }
.card-icon.cyan { background: var(--accent-cyan-glow); color: var(--accent-cyan); }
.card-icon.amber { background: rgba(184, 148, 79, 0.12); color: var(--accent-amber); }

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
}

.card-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

/* ============================================
   CONCEPT COMPARISON (Lifespan vs Healthspan)
   ============================================ */
.concept-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0;
}

.concept-card {
  padding: 32px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  transition: all var(--transition-base);
}

.concept-card.highlight {
  border-color: var(--accent-green-dim);
  background: linear-gradient(135deg, var(--bg-surface), rgba(61, 154, 80, 0.04));
}

.concept-card.highlight .concept-tag { color: var(--accent-green-text); }

.concept-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.concept-name {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.concept-def {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.card,
.tech-card,
.experiment-card,
.roadmap-version,
.timeline-node,
.arch-center,
.spec-item,
.formula-card,
.code-block,
.system-status {
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

/* ============================================
   RESEARCH TIMELINE
   ============================================ */
.timeline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1fr) 56px minmax(0, 1fr);
  align-items: center;
  margin: 40px 0;
  position: relative;
  overflow: visible;
}

.timeline-node {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: visible;
}

.timeline-node:first-child { border-radius: var(--radius-lg) 0 0 var(--radius-lg); }
.timeline-node:last-child { border-radius: 0 var(--radius-lg) var(--radius-lg) 0; }

.timeline-node:hover {
  border-color: var(--border-default);
  background: var(--bg-surface-2);
}

.timeline-node.target {
  border-color: var(--accent-green-dim);
  background: linear-gradient(135deg, var(--bg-surface), var(--accent-green-glow));
}

.timeline-days {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.timeline-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.timeline-sublabel {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-tertiary);
  letter-spacing: 0.05em;
}

.timeline-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 18px;
}

/* ============================================
   ARCHITECTURE DIAGRAM
   ============================================ */
.arch-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  margin: 40px 0;
  align-items: start;
}

.arch-center {
  padding: 32px 40px;
  background: var(--bg-surface);
  border: 1px solid var(--accent-green-dim);
  border-radius: var(--radius-lg);
  text-align: center;
  position: relative;
  z-index: 2;
  min-width: 200px;
  align-self: center;
}

.arch-center-title {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.arch-center-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
}

.arch-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.arch-side.left { padding-right: 32px; }
.arch-side.right { padding-left: 32px; }

.arch-side-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 8px;
  text-align: center;
}

.arch-item {
  padding: 10px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-fast);
}

.arch-item:hover { border-color: var(--border-default); background: var(--bg-surface-2); }

.arch-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.arch-item-desc {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-tertiary);
  text-align: right;
}

.arch-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
}

.arch-line {
  width: 40px;
  height: 1px;
  background: var(--border-default);
}

.arch-bottom {
  margin-top: 16px;
  padding: 20px 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
  grid-column: 1 / -1;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.arch-bottom-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 8px;
}

.arch-bottom-items {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.arch-bottom-item {
  font-size: 12.5px;
  color: var(--text-secondary);
}

/* ============================================
   TECH SPECS TABLE
   ============================================ */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 13.5px;
}

.spec-table th {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  text-align: left;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-default);
}

.spec-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.spec-table td:first-child {
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
}

.spec-table .mono { font-family: var(--font-mono); font-size: 12.5px; }

/* ============================================
   PROGRESS / BUILD STATUS
   ============================================ */
.progress-list { margin: 24px 0; }

.progress-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.progress-item:last-child { border-bottom: none; }

.progress-check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  font-size: 10px;
  font-weight: 700;
}

.progress-check.done {
  background: var(--accent-green-glow);
  color: var(--accent-green-text);
  border: 1px solid rgba(61, 154, 80, 0.3);
}

.progress-check.pending {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-default);
}

.progress-check.next {
  background: rgba(184, 148, 79, 0.12);
  color: var(--accent-amber);
  border: 1px solid rgba(184, 148, 79, 0.3);
}

.progress-text {
  font-size: 13.5px;
  color: var(--text-secondary);
}

.progress-item.done .progress-text { color: var(--text-primary); }

/* ============================================
   EXPERIMENT CARDS
   ============================================ */
.experiment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  margin: 32px 0;
}

.experiment-card {
  padding: 28px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.experiment-card:hover { border-color: var(--border-default); background: var(--bg-surface-2); }

.experiment-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.experiment-id {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent-green-text);
  background: var(--accent-green-glow);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(61, 154, 80, 0.2);
}

.experiment-status {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.status-planned { color: var(--text-tertiary); background: var(--bg-surface-3); border: 1px solid var(--border-subtle); }
.status-development { color: var(--accent-amber); background: rgba(184, 148, 79, 0.1); border: 1px solid rgba(184, 148, 79, 0.2); }
.status-future { color: var(--accent-cyan); background: var(--accent-cyan-glow); border: 1px solid rgba(74, 155, 165, 0.2); }

.experiment-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.experiment-obj {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 16px;
}

.experiment-meta {
  display: flex;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.experiment-meta-item {
  font-size: 12px;
  color: var(--text-tertiary);
}

.experiment-meta-item strong {
  color: var(--text-secondary);
  font-weight: 500;
}

/* ============================================
   CODE BLOCKS
   ============================================ */
.code-block {
  margin: 24px 0;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  background: var(--bg-surface-2);
  border-bottom: 1px solid var(--border-subtle);
}

.code-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  letter-spacing: 0.03em;
}

.code-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.code-copy:hover { color: var(--text-secondary); border-color: var(--border-default); background: var(--bg-surface-3); }

.code-body {
  padding: 20px;
  overflow-x: auto;
}

.code-body pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.code-body .keyword { color: var(--accent-green-text); }
.code-body .comment { color: var(--text-muted); font-style: italic; }
.code-body .number { color: var(--accent-amber); }
.code-body .string { color: var(--accent-cyan); }

/* ============================================
   RESEARCH PIPELINE
   ============================================ */
.pipeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.pipeline-node {
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  position: relative;
  transition: all var(--transition-base);
}

.pipeline-node:hover { border-color: var(--border-default); }

.pipeline-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--bg-surface-4);
  margin-bottom: 12px;
  line-height: 1;
}

.pipeline-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.pipeline-desc {
  font-size: 12.5px;
  color: var(--text-tertiary);
  line-height: 1.5;
}

/* ============================================
   SPEC GRID (Environmental targets)
   ============================================ */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 32px 0;
}

.spec-item {
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  text-align: center;
}

.spec-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.spec-unit {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-tertiary);
}

.spec-label {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ============================================
   ROADMAP
   ============================================ */
.roadmap-list { margin: 32px 0; }

.roadmap-version {
  padding: 32px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  transition: all var(--transition-base);
}

.roadmap-version:hover { border-color: var(--border-default); }

.roadmap-version-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.roadmap-version-tag {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  padding: 4px 12px;
  background: var(--bg-surface-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
}

.roadmap-version-tag.current { border-color: var(--accent-green-dim); color: var(--accent-green-text); background: var(--accent-green-glow); }

.roadmap-version-label {
  font-size: 14px;
  color: var(--text-secondary);
}

.roadmap-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 32px;
}

.roadmap-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 6px 0;
}

.roadmap-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
}

.roadmap-version.current .roadmap-dot { background: var(--accent-green); }
.roadmap-version.planned .roadmap-dot { background: var(--accent-amber); }
.roadmap-version.future .roadmap-dot { background: var(--accent-cyan); }

.roadmap-notes {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12.5px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* ============================================
   SEARCH OVERLAY
   ============================================ */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
}

.search-overlay.open { display: flex; }

.search-modal {
  width: 560px;
  max-width: 90vw;
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
}

.search-input-wrap input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-size: 15px;
  color: var(--text-primary);
  font-family: var(--font-sans);
}

.search-input-wrap input::placeholder { color: var(--text-muted); }

.search-esc {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  padding: 2px 6px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.search-results {
  max-height: 360px;
  overflow-y: auto;
  padding: 8px;
}

.search-result-item {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-result-item:hover { background: var(--bg-hover); }

.search-result-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.search-result-page {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-tertiary);
}

.search-empty {
  padding: 32px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 64px 32px;
  background: var(--bg-root);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
}

.footer-logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.footer-tagline {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 12px;
}

.footer-initiative {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 4px;
}

.footer-version {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 13.5px;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--text-primary); }

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
}

.footer-disclaimer {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 560px;
}

.footer-update {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-green-text);
  letter-spacing: 0.04em;
}

/* ============================================
   TECHNICAL DETAILS GRID (System page)
   ============================================ */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0;
}

.tech-card {
  padding: 24px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.tech-card:hover { border-color: var(--border-default); }

.tech-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
}

.tech-card-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.tech-card-type {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 6px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.tech-card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.tech-card-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tech-spec-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-tertiary);
  padding: 2px 8px;
  background: var(--bg-surface-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

/* ============================================
   FORMULA / HEALTH SCORE
   ============================================ */
.formula-card {
  padding: 40px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin: 32px 0;
  text-align: center;
}

.formula-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.formula {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--text-primary);
  line-height: 2;
  font-style: italic;
}

.formula-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 16px;
  font-family: var(--font-mono);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1200px) {
  .layout-doc .right-sidebar { display: none; }
  .layout-doc { grid-template-columns: var(--sidebar-width) 1fr; }
  .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .arch-diagram { gap: 16px; }
}

@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-status { display: none; }
  .nav-external { display: none; }
  .mobile-menu-btn { display: flex; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { max-width: 360px; justify-self: center; }
  .hero-title { font-size: 36px; }

  .layout-doc {
    grid-template-columns: 1fr;
  }
  .layout-doc .left-sidebar {
    display: none;
  }
  .layout-doc .main-content {
    padding: 32px 24px 64px;
  }

  .card-grid-3 { grid-template-columns: 1fr; }
  .card-grid-4 { grid-template-columns: 1fr; }
  .concept-compare { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .timeline-arrow { transform: rotate(90deg); justify-self: center; padding: 8px 0; }
  .timeline-node:first-child { border-radius: var(--radius-lg) var(--radius-lg) 0 0; }
  .timeline-node:last-child { border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

  .arch-diagram {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .arch-side { padding: 0 !important; }
  .arch-connector { display: none; }

  .pipeline { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .experiment-grid { grid-template-columns: 1fr; }
  .roadmap-items { grid-template-columns: 1fr; }

  .footer-top { flex-direction: column; gap: 32px; }

  .top-nav-inner { padding: 0 16px; }
  .page-content { padding-top: var(--nav-height); }
}

@media (max-width: 600px) {
  .hero { padding: 48px 0 40px; }
  .hero-title { font-size: 28px; }
  .hero-actions { flex-direction: column; }
  .spec-grid { grid-template-columns: 1fr; }
  .timeline-days { font-size: 28px; }
  .section-title { font-size: 28px; }
  .page-title { font-size: 32px; }
  .site-footer { padding: 40px 16px; }
}