/* ============================================
   AI Programming Manual — Unified Stylesheet
   ============================================ */

/* ── Variables ─────────────────────────────── */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #16161f;
  --bg-code: #1a1a26;
  --text-primary: #e8e6e1;
  --text-secondary: #9a978f;
  --text-muted: #6b6860;
  --accent-warm: #e8a44a;
  --accent-warm-dim: #c4883a;
  --accent-cyan: #5abfb5;
  --accent-violet: #9b8ec4;
  --accent-green: #7dba6a;
  --accent-rose: #d4687a;
  --accent-blue: #6a8fd8;
  --border-subtle: rgba(255,255,255,0.06);
  --border-accent: rgba(232,164,74,0.3);
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --max-width: 780px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
}

/* ── Base & Reset ──────────────────────────── */

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-primary);
  min-height: 100vh;
}

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

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

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

/* ── Navigation ────────────────────────────── */

.top-nav { position: sticky; top: 0; z-index: 100; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); background: rgba(10,10,15,0.85); border-bottom: 1px solid var(--border-subtle); padding: 0.85rem 2rem; display: flex; justify-content: space-between; align-items: center; }

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--accent-warm);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav-chapters {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.nav-chapters span {
  color: var(--text-secondary);
}

/* ── Hero ──────────────────────────────────── */

.hero { position: relative; padding: var(--space-xl) 2rem var(--space-lg); max-width: var(--max-width); margin: 0 auto; overflow: hidden; }

.hero::before {
  content: '';
  position: absolute;
  top: 1.5rem;
  right: 0;
  font-family: var(--font-display);
  font-size: clamp(8rem, 20vw, 14rem);
  color: rgba(232,164,74,0.04);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.hero[data-hero-index]::before {
  content: attr(data-hero-index);
}

.chapter-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: var(--space-sm);
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border-accent);
  border-radius: 2px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  max-width: 650px;
}

.hero-intro {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 580px;
}

.hero-intro strong {
  color: var(--accent-warm);
  font-weight: 500;
}

.hero, .content > * {
  animation: fadeInUp 0.6s ease both;
}

.series-label{display:inline-block;font-size:0.68rem;font-weight:600;letter-spacing:0.18em;text-transform:uppercase;color:var(--accent-cyan);margin-bottom:0.5rem;padding:0.3rem 0.75rem;border:1px solid rgba(90,191,181,0.3);border-radius:2px}

.hero,.content > *{animation:fadeInUp 0.6s ease both}

.hero-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-warm);
  border: 1px solid var(--border-accent);
  padding: 0.4rem 1rem;
  border-radius: 2px;
  margin-bottom: var(--space-md);
}

.hero h1 .accent { color: var(--accent-warm); }

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin-top: var(--space-md);
}

/* ── Content Layout ────────────────────────── */

.content { max-width: var(--max-width); margin: 0 auto; padding: 0 2rem var(--space-xl); }

.section-divider { border: none; height: 1px; background: linear-gradient(to right, transparent, var(--border-subtle) 20%, var(--border-accent) 50%, var(--border-subtle) 80%, transparent); margin: var(--space-lg) 0; }

.content > *:nth-child(2) { animation-delay: 0.05s; }

.content > *:nth-child(3) { animation-delay: 0.1s; }

.branch-line.main { background: var(--accent-cyan); }

.main { animation: fadeInUp 0.6s ease 0.1s both; }

.branch-name.main { color: var(--accent-cyan); border-color: rgba(90,191,181,0.3); }

/* ── Typography ────────────────────────────── */

h2 { font-family: var(--font-display); font-size: 1.85rem; line-height: 1.25; color: var(--text-primary); margin-bottom: var(--space-sm); margin-top: var(--space-lg); }

h2 .accent {
  color: var(--accent-warm);
}

h3 {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.01em;
}

ul, ol {
  margin: var(--space-sm) 0;
  padding-left: 1.5rem;
}

li {
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  padding-left: 0.35rem;
}

li::marker {
  color: var(--accent-warm-dim);
}

.compare-card.old::before {
  background: linear-gradient(to right, var(--accent-rose), transparent);
}

.compare-card.old h4 { color: var(--accent-rose); }

.compare-card li {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.key-concept p {
  color: var(--text-primary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin: 0;
}

p code {
  background: var(--bg-code);
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
  font-size: 0.85em;
  color: var(--accent-cyan);
}

.mini-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

.takeaway h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-top: 0;
  margin-bottom: 1rem;
}

.takeaway ul {
  list-style: none;
  padding: 0;
}

.takeaway li {
  padding: 0.4rem 0 0.4rem 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.takeaway li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
  font-weight: 700;
}

ul,ol{margin:var(--space-sm) 0;padding-left:1.5rem}

.convo-msg p{font-size:0.95rem;margin-bottom:0.5rem}

.convo-msg p:last-child{margin-bottom:0}

.convo-msg pre{margin:0.5rem 0;font-size:0.85rem}

.timeline{margin:var(--space-md) 0}

.stack-badge.sqlite{background:rgba(155,142,196,0.12);color:var(--accent-violet);border:1px solid rgba(155,142,196,0.3)}

.ms-content p{font-size:0.9rem;color:var(--text-muted);margin:0}

.guide-card h2 {
  font-family: var(--font-display);
  font-size: 1.55rem;
  line-height: 1.2;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
}

.chapter-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color 0.3s ease, transform 0.15s ease, background 0.3s ease;
}

.chapter-link:hover {
  border-color: var(--border-accent);
  transform: translateX(4px);
  background: var(--bg-secondary);
}

.chapter-link:hover .ch-arrow {
  color: var(--accent-warm);
  transform: translateX(3px);
}

.compare-card li,.compare-card p{font-size:0.95rem}

.phase-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
}

.phase-body p { font-size: 0.98rem; }

.phase-body ul { margin: 0.5rem 0; }

.phase-body li { font-size: 0.95rem; }

.phase-body pre { margin: 0.75rem 0; }

.shift-table .old { color: var(--text-muted); }

.threat-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.55;
}

.vuln-example {
  background: var(--bg-card);
  border: 1px solid var(--accent-rose);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.vuln-header {
  padding: 0.85rem 1.5rem;
  background: rgba(212,104,122,0.08);
  border-bottom: 1px solid rgba(212,104,122,0.2);
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.vuln-icon { font-size: 1.1rem; }

.vuln-title {
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-rose);
}

.vuln-body { padding: 1.5rem; }

.vuln-body p { font-size: 0.95rem; }

.vuln-body pre { margin: 0.75rem 0; }

.vuln-fix {
  padding: 1rem 1.5rem;
  background: rgba(90,191,181,0.04);
  border-top: 1px solid var(--border-subtle);
}

.vuln-fix-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
}

.sec-checklist {
  margin: var(--space-md) 0;
}

.strategy-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
}

.strategy-body p { font-size: 0.98rem; }

.strategy-body pre { margin: 0.75rem 0; }

.lib-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  margin: var(--space-md) 0;
}

.lib-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.1rem;
  transition: border-color 0.3s ease;
}

.lib-card:hover { border-color: var(--border-accent); }

.lib-category {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-warm);
  margin-bottom: 0.35rem;
}

.lib-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.lib-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.model-header-text h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
}

.model-body p { font-size: 0.98rem; }

.pattern-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
}

.pattern-body p { font-size: 0.98rem; }

.anti-card p { font-size: 0.92rem; margin: 0; }

.bp-section.role { border-left-color: var(--accent-cyan); }

.bp-section.role .bp-label { color: var(--accent-cyan); }

.template-body p { font-size: 0.95rem; }

.cog-header h3{margin:0;font-family:var(--font-display);font-size:1.15rem;color:var(--text-primary)}

.cog-body p{font-size:0.98rem}

.skill-content p{font-size:0.92rem;color:var(--text-muted);margin:0;line-height:1.6}

.shift-old{flex:1;padding:0.55rem 0.85rem;background:rgba(212,104,122,0.06);border:1px solid rgba(212,104,122,0.15);border-radius:6px 0 0 6px;font-size:0.88rem;color:var(--text-muted);text-align:right}

.principle-card p{font-size:0.92rem;color:var(--text-muted);margin:0;line-height:1.6}

.compare-card p, .compare-card li {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.compare-card pre {
  margin: 0.5rem 0;
  overflow-x: hidden;
  white-space: pre-wrap;
  word-break: break-word;
}

.compare-card pre code {
  white-space: pre-wrap;
  word-break: break-word;
}

.template-box pre {
  margin: 0;
  border: none;
  background: transparent;
  padding: 0;
}

.pill.highlight {
  border-color: var(--border-accent);
  color: var(--accent-warm);
}

ul{margin:var(--space-sm) 0;padding-left:1.5rem}

.h-content p{font-size:0.92rem;color:var(--text-muted);margin:0;line-height:1.6}

.closing h2{margin-top:0;font-size:1.6rem}

.closing p{color:var(--text-secondary);font-size:1.05rem;max-width:550px;margin:0 auto var(--space-sm)}

.closing p:last-child{margin-bottom:0}

.mode-body p {
  font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 0.65rem;
}

.mode-body pre {
  margin: 0.5rem 0 0;
}

.scenario-body p {
  font-size: 0.95rem;
}

.pipeline {
  display: flex;
  gap: 0;
  margin: var(--space-md) 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.pipeline-step {
  flex: 1;
  min-width: 130px;
  position: relative;
  text-align: center;
}

.pipeline-node {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1.1rem 0.85rem;
  position: relative;
  transition: border-color 0.3s ease;
}

.pipeline-step.active .pipeline-node {
  border-color: var(--accent-warm);
  background: rgba(232,164,74,0.06);
}

.pipeline-num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent-warm);
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
}

.pipeline-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.pipeline-connector {
  position: absolute;
  top: 50%;
  right: -1px;
  transform: translateY(-50%);
  width: 2px;
  height: 40%;
  z-index: 1;
}

.pipeline-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  color: var(--text-muted);
  font-size: 1.1rem;
  flex-shrink: 0;
  padding-top: 0.5rem;
}

.step-header h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-primary);
}

.step-body p {
  font-size: 0.98rem;
}

.step-body pre {
  margin-top: 0.85rem;
  margin-bottom: 0.85rem;
}

.step-body ul {
  margin: 0.65rem 0;
}

.compare-card li, .compare-card p { font-size: 0.95rem; }

.debug-template pre {
  margin: 0;
  border: none;
  border-radius: 0;
  background: transparent;
}

.ba-panel pre {
  margin: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  font-size: 0.82rem;
  padding: 1.15rem 1.25rem;
}

.arch-box.highlight {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
  background: rgba(232,164,74,0.06);
}

.arch-box.violet {
  border-color: rgba(155,142,196,0.4);
  color: var(--accent-violet);
  background: rgba(155,142,196,0.06);
}

.endpoint-list {
  margin: var(--space-md) 0;
}

.branch-line {
  width: 3px;
  height: 2.2rem;
  border-radius: 2px;
  flex-shrink: 0;
}

.branch-line.develop { background: var(--accent-blue); }

.branch-line.feature { background: var(--accent-warm); }

.branch-line.fix { background: var(--accent-rose); }

.commit-timeline {
  margin: var(--space-md) 0;
  position: relative;
  padding-left: 1.75rem;
}

.commit-timeline::before {
  content: '';
  position: absolute;
  left: 0.55rem;
  top: 0.3rem;
  bottom: 0.3rem;
  width: 2px;
  background: var(--border-subtle);
  border-radius: 1px;
}

.checklist{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:10px;padding:1.5rem;margin:var(--space-md) 0}

.test-result {
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: var(--space-sm) 0 var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
}

.file-tree .highlight{color:var(--accent-warm)}

.checklist h4{font-size:0.78rem;font-weight:600;text-transform:uppercase;letter-spacing:0.14em;color:var(--accent-warm);margin-bottom:0.75rem}

p strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* ── Code ──────────────────────────────────── */

pre { background: var(--bg-code); border: 1px solid var(--border-subtle); border-radius: 8px; padding: 1.35rem 1.5rem; margin: var(--space-sm) 0 var(--space-md); overflow-x: auto; position: relative; }

pre::before {
  content: attr(data-lang);
  position: absolute;
  top: 0.6rem;
  right: 0.85rem;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  opacity: 0.7;
}

code {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-primary);
}

.convo-msg code{font-size:0.85rem}

.stack-badge.express{background:rgba(125,186,106,0.12);color:var(--accent-green);border:1px solid rgba(125,186,106,0.3)}

.flow-step.code { background: rgba(232,164,74,0.12); color: var(--accent-warm); border: 1px solid var(--border-accent); }

.turn-content code {
  font-size: 0.84rem;
}

.prefix-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1rem;
  margin: var(--space-md) 0;
  align-items: center;
}

.prefix-tag {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.25rem 0.7rem;
  border-radius: 4px;
  text-align: center;
  min-width: 85px;
}

.prefix-tag.feat { background: rgba(90,191,181,0.15); color: var(--accent-cyan); }

.prefix-tag.fix { background: rgba(212,104,122,0.15); color: var(--accent-rose); }

.prefix-tag.refactor { background: rgba(106,143,216,0.15); color: var(--accent-blue); }

.prefix-tag.docs { background: rgba(155,142,196,0.15); color: var(--accent-violet); }

.prefix-tag.style { background: rgba(232,164,74,0.15); color: var(--accent-warm); }

.prefix-tag.test { background: rgba(125,186,106,0.15); color: var(--accent-green); }

.prefix-tag.chore { background: rgba(107,104,96,0.2); color: var(--text-secondary); }

.prefix-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  padding: 0.25rem 0;
}

/* ── Callout Boxes ─────────────────────────── */

.key-concept { background: linear-gradient(135deg, rgba(232,164,74,0.08), rgba(232,164,74,0.02)); border-left: 3px solid var(--accent-warm); border-radius: 0 8px 8px 0; padding: 1.5rem 1.75rem; margin: var(--space-md) 0; }

.key-concept .label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-warm);
  margin-bottom: 0.6rem;
}

.tips-box { background: var(--bg-card); border: 1px solid var(--border-subtle); border-radius: 8px; padding: 1.75rem; margin: var(--space-md) 0; position: relative; }

.tips-box::before {
  content: '💡';
  position: absolute;
  top: -0.85rem;
  left: 1.25rem;
  font-size: 1.25rem;
  background: var(--bg-primary);
  padding: 0 0.5rem;
}

.tips-box h4 {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-warm);
  margin-bottom: 0.75rem;
}

.warning-box { background: linear-gradient(135deg, rgba(212,104,122,0.08), rgba(212,104,122,0.02)); border-left: 3px solid var(--accent-rose); border-radius: 0 8px 8px 0; padding: 1.5rem 1.75rem; margin: var(--space-md) 0; }

.warning-box .label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-rose);
  margin-bottom: 0.6rem;
}

.analogy {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  padding: 2rem;
  margin: var(--space-md) 0;
  text-align: center;
}

.analogy .equation {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary);
  margin: 0.75rem 0;
  line-height: 1.6;
}

.analogy .equation span {
  color: var(--accent-warm);
}

.analogy .subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ── Conversation Blocks ───────────────────── */

.convo{margin:var(--space-md) 0}

.convo-msg{padding:1rem 1.25rem;margin-bottom:0.35rem;border-radius:8px;font-size:0.95rem;line-height:1.65}

.convo-msg.human{background:rgba(90,191,181,0.06);border:1px solid rgba(90,191,181,0.15);border-left:3px solid var(--accent-cyan)}

.convo-msg.ai{background:var(--bg-card);border:1px solid var(--border-subtle);border-left:3px solid var(--accent-warm)}

.convo-speaker{font-size:0.68rem;font-weight:600;text-transform:uppercase;letter-spacing:0.14em;margin-bottom:0.35rem}

.convo-msg.human .convo-speaker{color:var(--accent-cyan)}

.convo-msg.ai .convo-speaker{color:var(--accent-warm)}

/* ── Terminal & Trees ──────────────────────── */

.terminal{background:#0c0c0c;border:1px solid rgba(255,255,255,0.08);border-radius:8px;padding:1rem 1.25rem;margin:var(--space-sm) 0 var(--space-md);font-family:var(--font-mono);font-size:0.82rem;line-height:1.7;color:#a8a8a8;overflow-x:auto}

.terminal .cmd{color:var(--accent-cyan)}

.terminal .success{color:var(--accent-green)}

.terminal .warn{color:var(--accent-warm)}

.terminal .dim{color:#555}

.file-tree{background:var(--bg-code);border:1px solid var(--border-subtle);border-radius:8px;padding:1.25rem 1.5rem;margin:var(--space-sm) 0 var(--space-md);font-family:var(--font-mono);font-size:0.82rem;line-height:2;color:var(--text-secondary)}

.file-tree .dir{color:var(--accent-blue);font-weight:600}

.file-tree .file{color:var(--text-muted)}

.comp-tree{background:var(--bg-code);border:1px solid var(--border-subtle);border-radius:8px;padding:1.5rem;margin:var(--space-md) 0;font-family:var(--font-mono);font-size:0.82rem;line-height:2.1}

.comp-tree .comp{color:var(--accent-cyan);font-weight:600}

.comp-tree .hook{color:var(--accent-violet);font-style:italic}

.comp-tree .dim{color:#555}

.comp-tree .page{color:var(--accent-warm)}

/* ── Timeline ──────────────────────────────── */

.tl-item{display:flex;gap:1rem;margin-bottom:1rem;align-items:flex-start}

.tl-marker{flex-shrink:0;width:3rem;text-align:center}

.tl-time{font-family:var(--font-mono);font-size:0.78rem;font-weight:600;color:var(--accent-warm);background:rgba(232,164,74,0.1);border:1px solid var(--border-accent);border-radius:4px;padding:0.2rem 0.4rem;display:inline-block}

.tl-content{flex:1;padding-bottom:1rem;border-bottom:1px solid var(--border-subtle)}

.tl-item:last-child .tl-content{border-bottom:none;padding-bottom:0}

.tl-title{font-weight:600;color:var(--text-primary);margin-bottom:0.15rem}

.tl-desc{font-size:0.9rem;color:var(--text-muted)}

/* ── Tech Badges ───────────────────────────── */

.stack-row{display:flex;flex-wrap:wrap;gap:0.5rem;margin:var(--space-sm) 0}

.stack-badge{font-family:var(--font-mono);font-size:0.75rem;font-weight:600;padding:0.3rem 0.7rem;border-radius:4px;letter-spacing:0.04em}

.stack-badge.react{background:rgba(90,191,181,0.12);color:var(--accent-cyan);border:1px solid rgba(90,191,181,0.3)}

.stack-badge.ts{background:rgba(106,143,216,0.12);color:var(--accent-blue);border:1px solid rgba(106,143,216,0.3)}

.stack-badge.tailwind{background:rgba(232,164,74,0.12);color:var(--accent-warm);border:1px solid var(--border-accent)}

/* ── Architecture Diagram ──────────────────── */

.arch-diagram {
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 2rem 1.5rem;
  margin: var(--space-md) 0;
  overflow-x: auto;
}

.arch-layer{margin-bottom:1.25rem;padding:0.85rem 1rem;border-radius:6px;position:relative}

.arch-layer:last-child{margin-bottom:0}

.arch-layer-label{font-size:0.65rem;font-weight:600;text-transform:uppercase;letter-spacing:0.14em;margin-bottom:0.4rem}

.arch-layer.frontend{background:rgba(90,191,181,0.06);border:1px solid rgba(90,191,181,0.2)}

.arch-layer.frontend .arch-layer-label{color:var(--accent-cyan)}

.arch-layer.api{background:rgba(232,164,74,0.06);border:1px solid rgba(232,164,74,0.2)}

.arch-layer.api .arch-layer-label{color:var(--accent-warm)}

.arch-layer.data{background:rgba(155,142,196,0.06);border:1px solid rgba(155,142,196,0.2)}

.arch-layer.data .arch-layer-label{color:var(--accent-violet)}

.arch-boxes{display:flex;flex-wrap:wrap;gap:0.5rem}

.arch-box{padding:0.3rem 0.65rem;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);border-radius:4px;font-size:0.78rem;color:var(--text-secondary)}

.arch-arrow{text-align:center;color:var(--text-muted);font-size:0.85rem;margin:0.4rem 0}

.arch-box.cyan {
  border-color: rgba(90,191,181,0.4);
  color: var(--accent-cyan);
  background: rgba(90,191,181,0.06);
}

.arch-box.blue {
  border-color: rgba(106,143,216,0.4);
  color: var(--accent-blue);
  background: rgba(106,143,216,0.06);
}

.arch-connector {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0.25rem 0;
  letter-spacing: 0.15em;
}

.arch-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 0.5rem;
}

/* ── Milestones ────────────────────────────── */

.milestone {
  position: relative;
  margin-bottom: 1.15rem;
  padding-left: 0.75rem;
}

.milestone:hover{border-color:var(--border-accent)}

.ms-num{flex-shrink:0;font-family:var(--font-mono);font-size:0.78rem;font-weight:600;color:var(--accent-warm);background:rgba(232,164,74,0.12);border:1px solid var(--border-accent);padding:0.3rem 0.55rem;border-radius:4px}

.ms-content h4{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:0.2rem}

.ms-time{flex-shrink:0;font-family:var(--font-mono);font-size:0.72rem;color:var(--text-muted);background:var(--bg-code);padding:0.2rem 0.5rem;border-radius:3px;align-self:center}

.milestones {
  margin: var(--space-md) 0;
  position: relative;
  padding-left: 2rem;
}

.milestones::before {
  content: '';
  position: absolute;
  left: 0.65rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-warm), var(--accent-cyan));
  border-radius: 1px;
}

.milestone::before {
  content: '';
  position: absolute;
  left: -1.65rem;
  top: 0.55rem;
  width: 10px;
  height: 10px;
  background: var(--bg-primary);
  border: 2px solid var(--accent-warm);
  border-radius: 50%;
}

.milestone:last-child::before {
  border-color: var(--accent-cyan);
}

.milestone-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.98rem;
}

.milestone-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.15rem;
}

.ms-marker{display:inline-flex;align-items:center;gap:0.5rem;background:rgba(232,164,74,0.08);border:1px solid var(--border-accent);border-radius:6px;padding:0.5rem 1rem;margin:var(--space-md) 0 var(--space-sm);font-size:0.82rem}

.ms-marker .ms-badge{font-family:var(--font-mono);font-weight:600;color:var(--accent-warm);font-size:0.78rem}

.ms-marker .ms-text{color:var(--text-secondary);font-weight:500}

.ms-marker .ms-check{color:var(--accent-green)}

/* ── Checklist ─────────────────────────────── */

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

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

.check-box {
  flex-shrink: 0;
  width: 1.3rem;
  height: 1.3rem;
  border: 2px solid var(--accent-cyan);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.2rem;
  font-size: 0.7rem;
  color: var(--accent-cyan);
}

.check-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.check-text strong {
  color: var(--text-primary);
}

.check-item.done .check-box{background:var(--accent-green);border-color:var(--accent-green)}

.check-item .check-text{color:var(--text-secondary)}

.check-item .check-sev{font-family:var(--font-mono);font-size:0.68rem;font-weight:600;padding:0.15rem 0.4rem;border-radius:3px;margin-left:auto;flex-shrink:0}

.check-sev.critical{background:rgba(212,104,122,0.15);color:var(--accent-rose)}

.check-sev.high{background:rgba(232,164,74,0.15);color:var(--accent-warm)}

.check-sev.medium{background:rgba(155,142,196,0.15);color:var(--accent-violet)}

/* ── Takeaway & Navigation ─────────────────── */

.takeaway { background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card)); border: 1px solid var(--border-subtle); border-radius: 10px; padding: 2rem; margin: var(--space-lg) 0 var(--space-md); }

.next-chapter{display:flex;align-items:center;justify-content:space-between;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:1.5rem 1.75rem;text-decoration:none;transition:border-color 0.3s ease,transform 0.2s ease;margin-top:var(--space-md)}

.next-chapter:hover {
  border-color: var(--accent-warm);
  transform: translateX(4px);
}

.next-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  display: block;
  margin-bottom: 0.3rem;
}

.next-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
}

.next-arrow {
  font-size: 1.5rem;
  color: var(--accent-warm);
  transition: transform 0.2s ease;
}

.u-prev-arrow {
  order: -1;
  transform: rotate(180deg);
}

.next-chapter:hover .next-arrow {
  transform: translateX(4px);
}

.next-chapter:hover .u-prev-arrow {
  transform: rotate(180deg) translateX(-4px);
}

.footer{max-width:var(--max-width);margin:0 auto;padding:var(--space-lg) 2rem;border-top:1px solid var(--border-subtle);text-align:center;color:var(--text-muted);font-size:0.82rem}

.footer-links {
  margin-top: 0.55rem;
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
}

.footer-links a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: rgba(90,191,181,0.45);
  text-underline-offset: 2px;
  font-weight: 500;
}

.footer-links a:hover {
  color: var(--accent-cyan);
}

.site-links-row {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.55rem 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.site-links-row a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: rgba(90,191,181,0.45);
  text-underline-offset: 2px;
  font-weight: 500;
}

.site-links-row a:hover {
  color: var(--accent-cyan);
}

.site-links-row-top {
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(10,10,15,0.55);
}

.site-links-row-bottom {
  margin-top: var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.closing{background:linear-gradient(135deg,rgba(232,164,74,0.06),rgba(90,191,181,0.04));border:1px solid var(--border-accent);border-radius:12px;padding:2.5rem;margin:var(--space-lg) 0;text-align:center}

/* ── Start Page ────────────────────────────── */

.guide-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 2.25rem 2.5rem;
  margin-bottom: var(--space-md);
  text-decoration: none;
  transition: border-color 0.35s ease, transform 0.2s ease, box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.guide-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.guide-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 180px;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(232,164,74,0.03));
  pointer-events: none;
}

.guide-top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.guide-type {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 3px;
}

.guide-type.manual {
  color: var(--accent-warm);
  border: 1px solid var(--border-accent);
  background: rgba(232,164,74,0.06);
}

.guide-type.tutorial {
  color: var(--accent-cyan);
  border: 1px solid rgba(90,191,181,0.3);
  background: rgba(90,191,181,0.06);
}

.guide-status {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-cyan);
  background: rgba(90,191,181,0.12);
  border: 1px solid rgba(90,191,181,0.35);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
}

.guide-status.coming-soon {
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border-subtle);
}

.guide-date {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.guide-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: var(--space-sm);
  max-width: 620px;
}

.guide-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.guide-stat {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.guide-stat .num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-secondary);
}

.guide-arrow {
  position: absolute;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--text-muted);
  transition: color 0.3s ease, transform 0.2s ease;
}

.guide-card:hover .guide-arrow {
  color: var(--accent-warm);
  transform: translateY(-50%) translateX(4px);
}

.upcoming-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.upcoming-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  opacity: 0.55;
  transition: opacity 0.3s ease;
}

.upcoming-card:hover { opacity: 0.75; }

.upcoming-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}

.upcoming-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

/* ── Manual Index ──────────────────────────── */

.stat {
  text-align: center;
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent-warm);
  line-height: 1;
  margin-bottom: 0.2rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.toc-section { animation: fadeInUp 0.6s ease 0.1s both; }

.section-label.foundations span { color: var(--accent-cyan); }

.section-label.intermediate span { color: var(--accent-warm); }

.section-label.advanced span { color: var(--accent-violet); }

.section-label.mastery span { color: var(--accent-green); }

.chapter-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  margin-bottom: var(--space-sm);
}

.ch-num {
  flex-shrink: 0;
  width: 2.2rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
}

.foundations .ch-num { background: rgba(90,191,181,0.12); color: var(--accent-cyan); border: 1px solid rgba(90,191,181,0.25); }

.intermediate .ch-num { background: rgba(232,164,74,0.12); color: var(--accent-warm); border: 1px solid var(--border-accent); }

.advanced .ch-num { background: rgba(155,142,196,0.12); color: var(--accent-violet); border: 1px solid rgba(155,142,196,0.25); font-size: 0.84rem; font-weight: 700; }

.mastery .ch-num { background: rgba(125,186,106,0.12); color: var(--accent-green); border: 1px solid rgba(125,186,106,0.25); font-size: 0.84rem; font-weight: 700; }

.ch-info { flex: 1; min-width: 0; }

.ch-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--text-primary);
  line-height: 1.3;
}

.ch-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 0.15rem;
}

.ch-arrow {
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 1rem;
  transition: color 0.3s ease, transform 0.15s ease;
}

/* ── Page Components ───────────────────────── */

.method-wheel {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.85rem;
  margin: var(--space-md) 0;
}

p{margin-bottom:var(--space-sm);color:var(--text-secondary)}

main p a,
main li a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: rgba(90,191,181,0.55);
  text-underline-offset: 2px;
  font-weight: 500;
}

main p a:hover,
main li a:hover {
  color: var(--accent-cyan);
}

.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin: var(--space-md) 0; }

.compare-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.compare-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.compare-card.new::before {
  background: linear-gradient(to right, var(--accent-cyan), transparent);
}

.compare-card h4 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.85rem;
}

.compare-card.new h4 { color: var(--accent-cyan); }

.workflow{margin:var(--space-md) 0}

.workflow-step {
  display: flex;
  gap: 1.15rem;
  align-items: flex-start;
  margin-bottom: 1rem;
  position: relative;
}

.step-number {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(232,164,74,0.12);
  border: 1px solid var(--border-accent);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-warm);
}

.step-text {
  padding-top: 0.3rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
}

.step-text strong {
  color: var(--text-primary);
}

.chapter-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.95rem;
}

.chapter-table thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

.chapter-table tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.chapter-table tbody td:first-child {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-warm-dim);
  width: 3.5rem;
}

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

.card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: var(--space-md) 0; }

.mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.35rem;
  transition: border-color 0.3s ease;
}

.mini-card:hover {
  border-color: var(--border-accent);
}

.mini-card .icon {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
}

.mini-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.exercise { background: linear-gradient(135deg, rgba(90,191,181,0.08), rgba(90,191,181,0.02)); border-left: 3px solid var(--accent-cyan); border-radius: 0 8px 8px 0; padding: 1.5rem 1.75rem; margin: var(--space-md) 0; }

.exercise .label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-cyan);
  margin-bottom: 0.6rem;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.section-label::before,
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

.section-label span {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.compare-card.bad::before{background:linear-gradient(to right,var(--accent-rose),transparent)}

.compare-card.good::before{background:linear-gradient(to right,var(--accent-cyan),transparent)}

.compare-card.bad h4{color:var(--accent-rose)}

.compare-card.good h4{color:var(--accent-cyan)}

.phase-block {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.phase-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.phase-num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
}

.phase-num.p1 { background: rgba(90,191,181,0.12); color: var(--accent-cyan); border: 1px solid rgba(90,191,181,0.3); }

.phase-num.p2 { background: rgba(232,164,74,0.12); color: var(--accent-warm); border: 1px solid var(--border-accent); }

.phase-num.p3 { background: rgba(106,143,216,0.12); color: var(--accent-blue); border: 1px solid rgba(106,143,216,0.3); }

.phase-num.p4 { background: rgba(155,142,196,0.12); color: var(--accent-violet); border: 1px solid rgba(155,142,196,0.3); }

.phase-num.p5 { background: rgba(125,186,106,0.12); color: var(--accent-green); border: 1px solid rgba(125,186,106,0.3); }

.phase-header .phase-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 400;
}

.phase-body {
  padding: 1.5rem;
}

.method-spoke {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.15rem;
  text-align: center;
  transition: border-color 0.3s ease, transform 0.15s ease;
}

.method-spoke:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

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

.method-name { font-size: 0.92rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.2rem; }

.method-desc { font-size: 0.78rem; color: var(--text-muted); line-height: 1.4; }

.shift-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.92rem;
}

.shift-table thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

.shift-table tbody td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.shift-table tbody td:first-child {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

.shift-table .new { color: var(--accent-cyan); }

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

.time-block {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin: var(--space-md) 0;
  border-radius: 8px;
  overflow: hidden;
  height: 3.5rem;
}

.time-segment {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.3;
  padding: 0 0.5rem;
}

.time-segment.think { background: rgba(90,191,181,0.15); color: var(--accent-cyan); }

.time-segment.prompt { background: rgba(232,164,74,0.15); color: var(--accent-warm); }

.time-segment.review { background: rgba(155,142,196,0.15); color: var(--accent-violet); }

.time-segment.test { background: rgba(125,186,106,0.15); color: var(--accent-green); }

.time-segment.type { background: rgba(107,104,96,0.15); color: var(--text-muted); }

.time-labels {
  display: flex;
  gap: 0;
  margin-top: 0.3rem;
  margin-bottom: var(--space-sm);
}

.time-label {
  font-size: 0.68rem;
  color: var(--text-muted);
  text-align: center;
}

.threat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: var(--space-md) 0;
}

.threat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.threat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent-rose), transparent);
}

.threat-severity {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  padding: 0.15rem 0.55rem;
  border-radius: 3px;
  margin-bottom: 0.6rem;
}

.threat-severity.critical { background: rgba(212,104,122,0.2); color: var(--accent-rose); }

.threat-severity.high { background: rgba(232,164,74,0.2); color: var(--accent-warm); }

.threat-severity.medium { background: rgba(106,143,216,0.2); color: var(--accent-blue); }

.threat-card h4 {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.sec-group-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-warm);
  margin-top: 1rem;
  margin-bottom: 0.5rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-accent);
}

.sec-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0;
}

.sec-check {
  flex-shrink: 0;
  width: 1.2rem;
  height: 1.2rem;
  border: 2px solid var(--accent-cyan);
  border-radius: 3px;
  margin-top: 0.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: var(--accent-cyan);
}

.sec-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.sec-text strong { color: var(--text-primary); }

.hallucination-box {
  background: linear-gradient(135deg, rgba(155,142,196,0.08), rgba(155,142,196,0.02));
  border-left: 3px solid var(--accent-violet);
  border-radius: 0 8px 8px 0;
  padding: 1.5rem 1.75rem;
  margin: var(--space-md) 0;
}

.hallucination-box .label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent-violet);
  margin-bottom: 0.6rem;
}

.strategy-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.strategy-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(232,164,74,0.04);
}

.strategy-num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent-warm);
  background: rgba(232,164,74,0.12);
  border: 1px solid var(--border-accent);
  padding: 0.3rem 0.65rem;
  border-radius: 4px;
}

.strategy-body {
  padding: 1.5rem;
}

.model-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.model-card:hover { border-color: var(--border-accent); }

.model-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.model-num {
  flex-shrink: 0;
  width: 2.8rem;
  height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
}

.model-num.m1 { background: rgba(90,191,181,0.12); color: var(--accent-cyan); border: 1px solid rgba(90,191,181,0.3); }

.model-num.m2 { background: rgba(232,164,74,0.12); color: var(--accent-warm); border: 1px solid var(--border-accent); }

.model-num.m3 { background: rgba(106,143,216,0.12); color: var(--accent-blue); border: 1px solid rgba(106,143,216,0.3); }

.model-num.m4 { background: rgba(155,142,196,0.12); color: var(--accent-violet); border: 1px solid rgba(155,142,196,0.3); }

.model-num.m5 { background: rgba(125,186,106,0.12); color: var(--accent-green); border: 1px solid rgba(125,186,106,0.3); }

.model-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-style: italic;
}

.model-body {
  padding: 1.5rem;
}

.model-body .contrast {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 0.75rem 0;
}

.contrast-side {
  padding: 0.85rem 1rem;
  border-radius: 6px;
  font-size: 0.9rem;
}

.contrast-side.beginner {
  background: rgba(212,104,122,0.06);
  border: 1px solid rgba(212,104,122,0.15);
  color: var(--text-muted);
}

.contrast-side.expert {
  background: rgba(90,191,181,0.06);
  border: 1px solid rgba(90,191,181,0.15);
  color: var(--text-secondary);
}

.contrast-label {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.3rem;
}

.contrast-side.beginner .contrast-label { color: var(--accent-rose); }

.contrast-side.expert .contrast-label { color: var(--accent-cyan); }

.pattern-block {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.pattern-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.pattern-badge {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.7rem;
  border-radius: 4px;
  text-transform: uppercase;
}

.pattern-badge.core { background: rgba(232,164,74,0.15); color: var(--accent-warm); }

.pattern-badge.flow { background: rgba(90,191,181,0.15); color: var(--accent-cyan); }

.pattern-badge.meta { background: rgba(155,142,196,0.15); color: var(--accent-violet); }

.pattern-body { padding: 1.5rem; }

.flow-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 1rem 0;
  flex-wrap: wrap;
}

.flow-step {
  padding: 0.5rem 0.85rem;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
}

.flow-step.design { background: rgba(90,191,181,0.12); color: var(--accent-cyan); border: 1px solid rgba(90,191,181,0.3); }

.flow-step.critique { background: rgba(212,104,122,0.12); color: var(--accent-rose); border: 1px solid rgba(212,104,122,0.3); }

.flow-step.review { background: rgba(155,142,196,0.12); color: var(--accent-violet); border: 1px solid rgba(155,142,196,0.3); }

.flow-step.test { background: rgba(125,186,106,0.12); color: var(--accent-green); border: 1px solid rgba(125,186,106,0.3); }

.flow-step.refactor { background: rgba(106,143,216,0.12); color: var(--accent-blue); border: 1px solid rgba(106,143,216,0.3); }

.flow-arrow {
  color: var(--text-muted);
  padding: 0 0.3rem;
  font-size: 1rem;
  flex-shrink: 0;
}

.anti-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin: var(--space-md) 0;
}

.anti-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1.35rem;
  position: relative;
  overflow: hidden;
}

.anti-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
}

.anti-card.bad::before { background: linear-gradient(to right, var(--accent-rose), transparent); }

.anti-card.good::before { background: linear-gradient(to right, var(--accent-cyan), transparent); }

.anti-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.anti-card.bad .anti-label { color: var(--accent-rose); }

.anti-card.good .anti-label { color: var(--accent-cyan); }

.blueprint {
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 2rem 1.5rem;
  margin: var(--space-md) 0;
}

.bp-section {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid var(--border-subtle);
  border-radius: 0 6px 6px 0;
  background: rgba(255,255,255,0.01);
}

.bp-section:last-child { margin-bottom: 0; }

.bp-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.3rem;
}

.bp-section.context { border-left-color: var(--accent-warm); }

.bp-section.context .bp-label { color: var(--accent-warm); }

.bp-section.goal { border-left-color: var(--accent-green); }

.bp-section.goal .bp-label { color: var(--accent-green); }

.bp-section.requirements { border-left-color: var(--accent-blue); }

.bp-section.requirements .bp-label { color: var(--accent-blue); }

.bp-section.process { border-left-color: var(--accent-violet); }

.bp-section.process .bp-label { color: var(--accent-violet); }

.bp-section.output { border-left-color: var(--accent-rose); }

.bp-section.output .bp-label { color: var(--accent-rose); }

.bp-content {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.template-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.template-header {
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.template-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  background: rgba(232,164,74,0.12);
  color: var(--accent-warm);
}

.template-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.template-body { padding: 1.5rem; }

.cog-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:10px;margin:var(--space-md) 0;overflow:hidden;transition:border-color 0.3s ease}

.cog-card:hover{border-color:var(--border-accent)}

.cog-header{display:flex;align-items:center;gap:1rem;padding:1.15rem 1.5rem;border-bottom:1px solid var(--border-subtle)}

.cog-icon{font-size:1.5rem;flex-shrink:0}

.cog-body{padding:1.5rem}

.skill-stack{display:grid;grid-template-columns:1fr;gap:0.85rem;margin:var(--space-md) 0}

.skill-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:10px;padding:1.5rem;display:flex;gap:1.15rem;align-items:flex-start;transition:border-color 0.3s ease}

.skill-card:hover{border-color:var(--border-accent)}

.skill-num{flex-shrink:0;width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;border-radius:8px;font-family:var(--font-mono);font-size:0.82rem;font-weight:600;background:rgba(232,164,74,0.12);color:var(--accent-warm);border:1px solid var(--border-accent)}

.skill-content h4{font-size:1.05rem;font-weight:600;color:var(--text-primary);margin-bottom:0.3rem}

.shift-row{display:flex;align-items:center;gap:0;margin:0.5rem 0}

.shift-arrow{padding:0 0.5rem;color:var(--accent-warm);font-size:1rem;flex-shrink:0}

.shift-new{flex:1;padding:0.55rem 0.85rem;background:rgba(90,191,181,0.06);border:1px solid rgba(90,191,181,0.15);border-radius:0 6px 6px 0;font-size:0.88rem;color:var(--text-secondary);font-weight:500}

.principle-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:10px;padding:1.5rem;margin:var(--space-sm) 0;display:flex;gap:1rem;align-items:flex-start;transition:border-color 0.3s ease}

.principle-card:hover{border-color:var(--border-accent)}

.principle-num{flex-shrink:0;font-family:var(--font-mono);font-size:0.78rem;font-weight:600;color:var(--accent-warm);background:rgba(232,164,74,0.12);border:1px solid var(--border-accent);padding:0.3rem 0.65rem;border-radius:4px}

.principle-card h4{font-size:1.02rem;font-weight:600;color:var(--text-primary);margin-bottom:0.3rem}

.meta-loop{display:flex;align-items:center;justify-content:center;gap:0;margin:var(--space-md) 0;flex-wrap:wrap}

.ml-step{text-align:center;padding:0.75rem 1rem;border-radius:8px;font-size:0.88rem;font-weight:600;min-width:100px}

.ml-step.work{background:rgba(90,191,181,0.12);color:var(--accent-cyan);border:1px solid rgba(90,191,181,0.3)}

.ml-step.reflect{background:rgba(232,164,74,0.12);color:var(--accent-warm);border:1px solid var(--border-accent)}

.ml-step.improve{background:rgba(155,142,196,0.12);color:var(--accent-violet);border:1px solid rgba(155,142,196,0.3)}

.ml-step.repeat{background:rgba(125,186,106,0.12);color:var(--accent-green);border:1px solid rgba(125,186,106,0.3)}

.ml-arrow{color:var(--text-muted);padding:0 0.3rem;font-size:1rem}

.ml-label{font-size:0.72rem;color:var(--text-muted);margin-top:0.2rem;font-weight:400}

.level-stack{margin:var(--space-md) 0}

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

.level-badge{flex-shrink:0;font-family:var(--font-mono);font-size:0.72rem;font-weight:600;padding:0.25rem 0.65rem;border-radius:4px;min-width:70px;text-align:center}

.level-badge.l1{background:rgba(107,104,96,0.2);color:var(--text-secondary)}

.level-badge.l2{background:rgba(90,191,181,0.15);color:var(--accent-cyan)}

.level-badge.l3{background:rgba(232,164,74,0.15);color:var(--accent-warm)}

.level-text{font-size:0.95rem;color:var(--text-secondary)}

.level-text strong{color:var(--text-primary)}

.template-box {
  background: var(--bg-card);
  border: 1px solid var(--border-accent);
  border-radius: 10px;
  padding: 2rem;
  margin: var(--space-md) 0;
  position: relative;
}

.template-box::before {
  content: 'Template';
  position: absolute;
  top: -0.6rem;
  left: 1.25rem;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-warm);
  background: var(--bg-card);
  padding: 0 0.6rem;
}

.anatomy {
  margin: var(--space-md) 0;
}

.anatomy-row {
  display: flex;
  gap: 1rem;
  align-items: stretch;
  margin-bottom: 0.5rem;
}

.anatomy-label {
  flex-shrink: 0;
  width: 110px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent-warm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: right;
  border-right: 2px solid var(--border-accent);
}

.anatomy-content {
  flex: 1;
  padding: 0.6rem 0.85rem;
  background: var(--bg-code);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-primary);
  line-height: 1.55;
}

.anatomy-desc {
  flex: 1;
  padding: 0.6rem 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  font-style: italic;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: var(--space-sm) 0;
}

.pill {
  display: inline-block;
  padding: 0.3rem 0.85rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  background: var(--bg-card);
}

.heuristic{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:10px;padding:1.5rem;margin:var(--space-sm) 0;display:flex;gap:1rem;align-items:flex-start;transition:border-color 0.3s ease}

.heuristic:hover{border-color:var(--border-accent)}

.h-num{flex-shrink:0;width:2.2rem;height:2.2rem;display:flex;align-items:center;justify-content:center;border-radius:50%;font-family:var(--font-mono);font-size:0.75rem;font-weight:600;background:rgba(232,164,74,0.1);color:var(--accent-warm);border:1px solid var(--border-accent)}

.h-content h4{font-family:var(--font-display);font-size:1.05rem;color:var(--text-primary);margin-bottom:0.3rem}

.mode-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin: var(--space-md) 0;
}

.mode-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.35rem;
  align-items: start;
  transition: border-color 0.3s ease;
}

.mode-card:hover {
  border-color: var(--border-accent);
}

.mode-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 3px;
}

.mode-card.brainstorm::after { background: var(--accent-warm); }

.mode-card.implement::after { background: var(--accent-cyan); }

.mode-card.review::after { background: var(--accent-violet); }

.mode-icon {
  width: 3rem; height: 3rem;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  font-size: 1.4rem;
}

.mode-card.brainstorm .mode-icon { background: rgba(232,164,74,0.12); }

.mode-card.implement .mode-icon { background: rgba(90,191,181,0.12); }

.mode-card.review .mode-icon { background: rgba(155,142,196,0.12); }

.mode-body h4 {
  font-size: 1.08rem; font-weight: 600; color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.mode-body {
  min-width: 0;
}

.loop-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: var(--space-md) 0;
  flex-wrap: wrap;
}

.loop-node {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 0.65rem 1.1rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: center;
  min-width: 100px;
}

.loop-node.active {
  border-color: var(--accent-warm);
  background: rgba(232,164,74,0.08);
  color: var(--accent-warm);
}

.loop-arrow {
  color: var(--text-muted);
  font-size: 1.2rem;
  padding: 0 0.35rem;
  flex-shrink: 0;
}

.loop-return {
  width: 100%;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.82rem;
  margin-top: 0.5rem;
  font-style: italic;
}

.scenario{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:10px;margin:var(--space-md) 0;overflow:hidden}

.scenario-header {
  padding: 1rem 1.5rem;
  background: rgba(232,164,74,0.06);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-warm);
}

.scenario-body {
  padding: 1.5rem;
}

.scenario-exchange {
  margin: var(--space-sm) 0;
}

.exchange-turn {
  display: flex;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
  align-items: flex-start;
}

.turn-label {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  margin-top: 0.15rem;
}

.turn-label.you {
  background: rgba(90,191,181,0.15);
  color: var(--accent-cyan);
}

.turn-label.ai {
  background: rgba(155,142,196,0.15);
  color: var(--accent-violet);
}

.turn-content {
  flex: 1;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-section {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.step-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  background: rgba(232,164,74,0.04);
  border-bottom: 1px solid var(--border-subtle);
}

.step-badge {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(232,164,74,0.12);
  border: 1px solid var(--border-accent);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-warm);
}

.step-body {
  padding: 1.5rem;
}

.debug-template {
  background: var(--bg-card);
  border: 1px solid var(--accent-rose);
  border-radius: 10px;
  margin: var(--space-md) 0;
  overflow: hidden;
}

.debug-template-header {
  padding: 0.85rem 1.5rem;
  background: rgba(212,104,122,0.08);
  border-bottom: 1px solid rgba(212,104,122,0.2);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-rose);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spectrum {
  margin: var(--space-md) 0;
}

.spectrum-row {
  display: flex;
  align-items: stretch;
  margin-bottom: 0.5rem;
  border-radius: 6px;
  overflow: hidden;
  font-size: 0.88rem;
}

.spectrum-label {
  flex-shrink: 0;
  width: 180px;
  padding: 0.6rem 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-right: none;
  border-radius: 6px 0 0 6px;
}

.spectrum-bar {
  flex: 1;
  display: flex;
  border-radius: 0 6px 6px 0;
  overflow: hidden;
}

.spectrum-ai {
  background: rgba(90,191,181,0.15);
  border: 1px solid rgba(90,191,181,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.6rem 0.5rem;
}

.spectrum-you {
  background: rgba(232,164,74,0.12);
  border: 1px solid rgba(232,164,74,0.2);
  border-left: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-warm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.6rem 0.5rem;
}

.smell-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.85rem;
  margin: var(--space-md) 0;
}

.smell-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1rem 1.15rem;
  text-align: center;
  transition: border-color 0.3s ease, transform 0.15s ease;
}

.smell-card:hover {
  border-color: var(--accent-rose);
  transform: translateY(-2px);
}

.smell-icon {
  font-size: 1.6rem;
  margin-bottom: 0.4rem;
}

.smell-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.smell-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.before-after {
  margin: var(--space-md) 0;
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  overflow: hidden;
}

.ba-tabs {
  display: flex;
  border-bottom: 1px solid var(--border-subtle);
}

.ba-tab {
  flex: 1;
  padding: 0.7rem 1rem;
  text-align: center;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: default;
}

.ba-tab.before {
  background: rgba(212,104,122,0.06);
  color: var(--accent-rose);
  border-right: 1px solid var(--border-subtle);
}

.ba-tab.after {
  background: rgba(90,191,181,0.06);
  color: var(--accent-cyan);
}

.ba-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.ba-panel {
  padding: 0;
}

.ba-panel.before-panel {
  background: rgba(212,104,122,0.03);
  border-right: 1px solid var(--border-subtle);
}

.ba-panel.after-panel {
  background: rgba(90,191,181,0.03);
}

.principle-cards {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  margin: var(--space-md) 0;
}

.principle-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(to right, var(--accent-warm), transparent);
}

.principle-abbr {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-warm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}

.decision-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
  font-size: 0.92rem;
}

.decision-table thead th {
  text-align: left;
  padding: 0.75rem 1rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-subtle);
}

.decision-table tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.decision-table tbody td:first-child {
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
}

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

.badge-yes {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  background: rgba(90,191,181,0.15);
  color: var(--accent-cyan);
}

.badge-no {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  background: rgba(212,104,122,0.15);
  color: var(--accent-rose);
}

.endpoint-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.endpoint-row:last-child {
  border-bottom: none;
}

.http-method {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  min-width: 52px;
  text-align: center;
}

.http-method.get { background: rgba(90,191,181,0.15); color: var(--accent-cyan); }

.http-method.post { background: rgba(232,164,74,0.15); color: var(--accent-warm); }

.http-method.put { background: rgba(106,143,216,0.15); color: var(--accent-blue); }

.http-method.delete { background: rgba(212,104,122,0.15); color: var(--accent-rose); }

.endpoint-path {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-primary);
}

.endpoint-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-left: auto;
}

.branch-diagram {
  background: var(--bg-code);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
  margin: var(--space-md) 0;
  overflow-x: auto;
}

.branch-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.6rem;
}

.branch-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  min-width: 170px;
}

.branch-name.develop { color: var(--accent-blue); border-color: rgba(106,143,216,0.3); }

.branch-name.feature { color: var(--accent-warm); border-color: var(--border-accent); }

.branch-name.fix { color: var(--accent-rose); border-color: rgba(212,104,122,0.3); }

.branch-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.commit-entry {
  position: relative;
  margin-bottom: 0.85rem;
  padding-left: 0.85rem;
}

.commit-entry::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 0.5rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid var(--accent-cyan);
  background: var(--bg-primary);
}

.commit-entry.bad::before {
  border-color: var(--accent-rose);
}

.commit-msg {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-primary);
  line-height: 1.4;
}

.commit-entry.bad .commit-msg {
  color: var(--accent-rose);
  text-decoration: line-through;
  opacity: 0.7;
}

.commit-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.test-pyramid {
  margin: var(--space-md) auto;
  max-width: 500px;
}

.pyramid-level {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.pyramid-bar {
  height: 2.8rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
  flex-shrink: 0;
}

.pyramid-bar.e2e {
  width: 35%;
  background: linear-gradient(135deg, rgba(212,104,122,0.2), rgba(212,104,122,0.1));
  border: 1px solid rgba(212,104,122,0.3);
}

.pyramid-bar.integration {
  width: 60%;
  background: linear-gradient(135deg, rgba(232,164,74,0.2), rgba(232,164,74,0.1));
  border: 1px solid rgba(232,164,74,0.3);
}

.pyramid-bar.unit {
  width: 100%;
  background: linear-gradient(135deg, rgba(90,191,181,0.2), rgba(90,191,181,0.1));
  border: 1px solid rgba(90,191,181,0.3);
}

.pyramid-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.pyramid-meta strong {
  color: var(--text-secondary);
}

.test-pass {
  color: var(--accent-green);
}

.test-fail {
  color: var(--accent-rose);
}

.test-suite {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-bottom: 0.35rem;
}

.test-summary {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.tdd-loop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: var(--space-md) 0;
  flex-wrap: wrap;
}

.tdd-step {
  text-align: center;
  padding: 0.85rem 1.25rem;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  min-width: 110px;
}

.tdd-step.red {
  background: rgba(212,104,122,0.12);
  border: 1px solid rgba(212,104,122,0.3);
  color: var(--accent-rose);
}

.tdd-step.green {
  background: rgba(125,186,106,0.12);
  border: 1px solid rgba(125,186,106,0.3);
  color: var(--accent-green);
}

.tdd-step.refactor {
  background: rgba(106,143,216,0.12);
  border: 1px solid rgba(106,143,216,0.3);
  color: var(--accent-blue);
}

.tdd-arrow {
  color: var(--text-muted);
  font-size: 1.2rem;
  padding: 0 0.35rem;
  flex-shrink: 0;
}

.tdd-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
  font-weight: 400;
}

/* ── Animations ────────────────────────────── */

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ────────────────────────────── */

@media (max-width: 600px) {
  .comparison { grid-template-columns: 1fr; }
}

@media (max-width: 550px) {
  .card-grid { grid-template-columns: 1fr; }
}

@media(max-width:768px){.hero{padding:var(--space-lg) 1.25rem var(--space-md)}.content{padding:0 1.25rem var(--space-lg)}h2{font-size:1.5rem}.top-nav{padding:0.85rem 1.25rem}.tl-item{flex-direction:column;gap:0.35rem}.milestone{flex-direction:column}}

@media (max-width: 768px) {
  .hero { padding: var(--space-lg) 1.25rem var(--space-md); }
  .content { padding: 0 1.25rem var(--space-lg); }
  h2 { font-size: 1.5rem; }
  .top-nav { padding: 0.85rem 1.25rem; }

  body.debug-overflow {
    overflow-x: hidden;
  }

  body.debug-overflow .content,
  body.debug-overflow .step-section,
  body.debug-overflow .step-body,
  body.debug-overflow .scenario,
  body.debug-overflow .scenario-body,
  body.debug-overflow .tips-box,
  body.debug-overflow .warning-box,
  body.debug-overflow .exercise,
  body.debug-overflow pre {
    outline: 1px solid rgba(212,104,122,0.35);
  }

  .step-header {
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
  }

  .step-header h3 {
    min-width: 0;
    font-size: 1.1rem;
    overflow-wrap: anywhere;
  }

  .step-body {
    padding: 1rem;
  }

  .step-body p,
  .step-body li {
    overflow-wrap: anywhere;
  }

  .step-body pre {
    overflow-x: hidden;
    white-space: pre-wrap;
    word-break: break-word;
  }

  .step-body pre code {
    white-space: pre-wrap;
    word-break: break-word;
  }

  .tips-box,
  .warning-box,
  .exercise,
  .takeaway,
  .scenario-header,
  .scenario-body {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .scenario-header,
  .turn-content,
  .milestone-title,
  .milestone-desc {
    overflow-wrap: anywhere;
  }

  .exchange-turn,
  .turn-content {
    min-width: 0;
  }

  .milestones {
    padding-left: 1.6rem;
  }

  .milestone::before {
    left: -1.35rem;
  }
}

@media (max-width: 600px) {
  .mode-card {
    grid-template-columns: 1fr;
    gap: 0.9rem;
    padding: 1.25rem;
  }

  .content pre {
    overflow-x: hidden;
    white-space: pre-wrap;
    word-break: break-word;
  }

  .content pre code {
    white-space: pre-wrap;
    word-break: break-word;
  }

  .mode-body pre {
    overflow-x: hidden;
    white-space: pre-wrap;
    word-break: break-word;
  }

  .mode-body pre code {
    white-space: pre-wrap;
    word-break: break-word;
  }
}

@media(max-width:600px){.comparison{grid-template-columns:1fr}}

@media(max-width:550px){.card-grid{grid-template-columns:1fr}}

@media (max-width: 400px) { .method-wheel { grid-template-columns: 1fr; } }

@media (max-width: 500px) { .model-body .contrast { grid-template-columns: 1fr; } }

@media (max-width: 650px) { .smell-grid { grid-template-columns: 1fr 1fr; } }

@media (max-width: 420px) { .smell-grid { grid-template-columns: 1fr; } }

/* ── Width Overrides for Wider Pages ───────── */

.hero--wide,
.main--wide,
.toc-section {
  max-width: 900px;
  margin: 0 auto;
}

.hero--wide {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-xl) 2rem var(--space-lg);
  text-align: center;
  position: relative;
}

.main--wide {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem var(--space-xl);
}

/* ===== Utility Classes ===== */

/* Spacing */
.u-mt-075 { margin-top: 0.75rem; }
.u-mt-1 { margin-top: 1rem; }
.u-mt-space-md { margin-top: var(--space-md); }
.u-pre-my-05 { margin: 0.5rem 0; }

/* Width */
.u-w-10 { width: 10%; }
.u-w-15 { width: 15%; }
.u-w-20 { width: 20%; }
.u-w-25 { width: 25%; }
.u-w-30 { width: 30%; }
.u-w-35 { width: 35%; }
.u-w-45 { width: 45%; }
.u-w-5 { width: 5%; }
.u-w-55 { width: 55%; }
.u-w-65 { width: 65%; }
.u-w-70 { width: 70%; }
.u-w-75 { width: 75%; }
.u-w-80 { width: 80%; }
.u-w-85 { width: 85%; }
.u-w-95 { width: 95%; }

/* Text */
.u-caption-muted { margin-top: 0.5rem; font-size: 0.88rem; color: var(--text-muted); }
.u-muted-italic { font-size: 0.88rem; color: var(--text-muted); font-style: italic; }
.u-note-muted { margin-top: 0.75rem; font-size: 0.88rem; color: var(--text-muted); }
.u-result-text { margin-top: 0.75rem; font-size: 0.9rem; }
.u-text-right { text-align: right; }

/* Component helpers */
.u-pre-reset { margin: 0.5rem 0 0; border: none; background: transparent; padding: 0; }
.u-prev-link { transform: none; margin-bottom: 0.5rem; }
.u-seg-debug-20 { width: 20%; background: rgba(212,104,122,0.15); color: var(--accent-rose); }
.u-seg-debug-5 { width: 5%; background: rgba(212,104,122,0.15); color: var(--accent-rose); }

/* ── Cookie Consent ────────────────────────── */

.cookie-consent-root {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 150;
  pointer-events: none;
}

.cookie-consent-root.is-visible {
  pointer-events: auto;
}

.cookie-consent-banner {
  width: min(940px, calc(100% - 2rem));
  margin: 0 auto 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 1rem;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: none;
}

.cookie-consent-root.is-visible .cookie-consent-banner {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.cookie-consent-banner h2 {
  margin: 0 0 0.55rem;
  font-size: 1.1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
}

.cookie-consent-banner p {
  color: var(--text-secondary);
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
}

.cookie-consent-meta {
  margin-top: 0.5rem;
}

.cookie-consent-meta a {
  color: var(--accent-cyan);
}

.cookie-consent-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

.cookie-btn {
  border: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 0.5rem 0.8rem;
  border-radius: 4px;
  font-size: 0.86rem;
  cursor: pointer;
}

.cookie-btn:hover {
  border-color: var(--border-accent);
}

.cookie-btn-primary {
  border-color: var(--border-accent);
  color: var(--accent-warm);
}

.cookie-consent-preferences {
  margin-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.75rem;
  display: grid;
  gap: 0.6rem;
}

.cookie-toggle {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  color: var(--text-secondary);
  font-size: 0.88rem;
}

.cookie-toggle input {
  margin-top: 0.18rem;
}

.cookie-toggle span {
  display: grid;
  gap: 0.15rem;
}

.cookie-toggle strong {
  color: var(--text-primary);
  font-weight: 600;
}

.cookie-toggle em {
  color: var(--text-muted);
  font-style: normal;
  font-size: 0.8rem;
}

.cookie-consent-manage {
  position: fixed;
  left: 1rem;
  bottom: 1rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: 4px;
  padding: 0.45rem 0.7rem;
  font-size: 0.8rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.cookie-consent-manage.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

@media (max-width: 900px) {
  .cookie-consent-root {
    inset: 0;
    right: 0;
    bottom: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background: rgba(10,10,15,0);
    transition: background 0.22s ease;
  }

  .cookie-consent-root.is-visible {
    background: rgba(10,10,15,0.86);
  }

  .cookie-consent-banner {
    width: min(680px, 100%);
    margin: 0;
    max-height: calc(100dvh - 1rem);
    overflow: auto;
  }

  .cookie-consent-manage {
    left: 0.6rem;
    bottom: 0.6rem;
  }
}