/* ============================================================
   slm-factory Documentation Stylesheet
   Style: Korean Government Proposal (공공제안서)
   Font: Pretendard (CDN), Monospace fallback
   Color: Navy (#1B3A5C) primary, warm gray accents
   ============================================================ */

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

:root {
  /* Primary palette */
  --color-navy: #1B3A5C;
  --color-navy-light: #2C5282;
  --color-navy-dark: #132A43;
  --color-accent: #3182CE;
  --color-accent-light: #63B3ED;

  /* Neutral palette */
  --color-white: #FFFFFF;
  --color-bg: #F7F8FA;
  --color-bg-alt: #EDF2F7;
  --color-border: #CBD5E0;
  --color-border-light: #E2E8F0;
  --color-text: #1A202C;
  --color-text-secondary: #4A5568;
  --color-text-muted: #718096;

  /* Semantic */
  --color-success: #2F855A;
  --color-success-bg: #F0FFF4;
  --color-warning: #C05621;
  --color-warning-bg: #FFFAF0;
  --color-danger: #C53030;
  --color-danger-bg: #FFF5F5;
  --color-info: #2B6CB0;
  --color-info-bg: #EBF8FF;

  /* SVG diagram colors (shared with inline SVGs) */
  --svg-primary: #1B3A5C;
  --svg-secondary: #3182CE;
  --svg-tertiary: #63B3ED;
  --svg-bg-box: #EBF8FF;
  --svg-bg-box-alt: #F0FFF4;
  --svg-bg-box-warn: #FFFAF0;
  --svg-stroke: #2C5282;
  --svg-stroke-light: #A0AEC0;
  --svg-text: #1A202C;
  --svg-text-light: #4A5568;
  --svg-arrow: #2C5282;
  --svg-highlight: #ED8936;

  /* Typography */
  --font-body: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;
  --font-size-base: 18px;
  --line-height-body: 1.8;
  --line-height-heading: 1.35;
  --letter-spacing: -0.01em;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Layout */
  --content-max-width: 1080px;
  --sidebar-width: 260px;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* --- Typography --- */
html {
  font-size: var(--font-size-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: var(--line-height-body);
  letter-spacing: var(--letter-spacing);
  color: var(--color-text);
  background-color: var(--color-bg);
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* --- Page Layout --- */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  overflow-y: auto;
  background: var(--color-navy-dark);
  color: var(--color-white);
  padding: var(--space-xl) 0;
  z-index: 100;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.2) transparent;
}

.sidebar-header {
  padding: 0 var(--space-lg);
  margin-bottom: var(--space-xl);
}

.sidebar-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-logo svg {
  width: 28px;
  height: 28px;
}

.sidebar-version {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--space-xs);
}

.sidebar-nav {
  list-style: none;
}

.sidebar-nav li {
  margin: 0;
}

.sidebar-nav a {
  display: block;
  padding: 0.5rem var(--space-lg);
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.07);
}

.sidebar-nav a.active {
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
  border-left-color: var(--color-accent-light);
  font-weight: 600;
}

.sidebar-nav .nav-section {
  padding: var(--space-md) var(--space-lg) var(--space-sm);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
}

.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
}

.content-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
}

/* --- Page Header (Hero) --- */
.page-header {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-white);
  padding: var(--space-3xl) var(--space-xl);
  position: relative;
  overflow: hidden;
}

.page-header::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 40%;
  background: linear-gradient(135deg, transparent 30%, rgba(255,255,255,0.03) 100%);
  pointer-events: none;
}

.page-header .content-container {
  padding: 0;
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: var(--line-height-heading);
  margin-bottom: var(--space-md);
  color: var(--color-white);
  border: none;
  padding: 0;
}

.page-header .subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 720px;
  line-height: 1.65;
}

.page-header .badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  backdrop-filter: blur(4px);
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

.breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

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

.breadcrumb .separator {
  color: var(--color-border);
}

/* --- Headings --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-navy);
  letter-spacing: -0.02em;
}

h1 {
  font-size: 2.25rem;
  margin: var(--space-3xl) 0 var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 3px solid var(--color-navy);
}

h2 {
  font-size: 1.75rem;
  margin: var(--space-3xl) 0 var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border);
}

h3 {
  font-size: 1.4rem;
  margin: var(--space-2xl) 0 var(--space-md);
}

h4 {
  font-size: 1.2rem;
  margin: var(--space-xl) 0 var(--space-md);
}

h5, h6 {
  font-size: 1.1rem;
  margin: var(--space-lg) 0 var(--space-md);
}

/* --- Body Text --- */
p {
  margin: 0 0 var(--space-lg);
}

strong {
  font-weight: 700;
  color: var(--color-navy);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-navy-light);
  text-decoration: underline;
}

/* --- Lists --- */
ul, ol {
  margin: 0 0 var(--space-lg);
  padding-left: var(--space-xl);
}

li {
  margin-bottom: var(--space-sm);
}

li > ul, li > ol {
  margin-top: var(--space-sm);
  margin-bottom: 0;
}

/* --- Tables --- */
.table-wrapper {
  overflow-x: auto;
  margin: 0 0 var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  background: var(--color-white);
}

thead {
  background: var(--color-navy);
  color: var(--color-white);
}

thead th {
  padding: 0.85rem 1.1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: top;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-bg);
}

/* --- Code --- */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-alt);
  color: var(--color-navy);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  font-weight: 500;
  white-space: nowrap;
}

pre {
  background: var(--color-navy-dark);
  color: #E2E8F0;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 0 0 var(--space-xl);
  font-size: 0.85rem;
  line-height: 1.6;
  box-shadow: var(--shadow-md);
  position: relative;
}

pre code {
  background: none;
  color: inherit;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  font-weight: 400;
  white-space: pre;
}

/* Code block language label */
pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute;
  top: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
  padding: 0.2rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  border-radius: 0 var(--radius-md) 0 var(--radius-sm);
}

/* Syntax highlighting (minimal) */
.token-keyword { color: #63B3ED; }
.token-string { color: #68D391; }
.token-comment { color: #718096; font-style: italic; }
.token-function { color: #F6AD55; }
.token-number { color: #FC8181; }
.token-operator { color: #CBD5E0; }

/* --- Blockquotes / Callouts --- */
blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-info-bg);
  padding: var(--space-md) var(--space-lg);
  margin: 0 0 var(--space-xl);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* Callout variants */
.callout {
  padding: var(--space-md) var(--space-lg);
  margin: 0 0 var(--space-xl);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  display: flex;
  gap: var(--space-md);
}

.callout-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  margin-top: 2px;
}

.callout-content {
  flex: 1;
  min-width: 0;
}

.callout-content p:last-child {
  margin-bottom: 0;
}

.callout-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
}

.callout-info {
  background: var(--color-info-bg);
  border-left-color: var(--color-info);
}

.callout-warning {
  background: var(--color-warning-bg);
  border-left-color: var(--color-warning);
}

.callout-danger {
  background: var(--color-danger-bg);
  border-left-color: var(--color-danger);
}

.callout-success {
  background: var(--color-success-bg);
  border-left-color: var(--color-success);
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin: 0 0 var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin: 0 0 var(--space-xl);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-sm);
}

.card-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.card-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.card-link:hover {
  text-decoration: underline;
}

/* --- Diagram Container --- */
.diagram {
  margin: var(--space-2xl) 0;
  text-align: center;
}

.diagram svg {
  max-width: 100%;
  height: auto;
  min-height: 280px;
}

.diagram-caption {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-md);
  font-style: italic;
}

/* --- Steps / Pipeline --- */
.step-list {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-xl);
}

.step-item {
  counter-increment: step-counter;
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.step-number::before {
  content: counter(step-counter);
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-navy);
  margin-bottom: var(--space-xs);
}

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

/* --- Tag / Badge --- */
.tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.tag-required {
  background: var(--color-navy);
  color: var(--color-white);
}

.tag-optional {
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.tag-auto {
  background: #e8f4fd;
  color: #1565c0;
  border: 1px solid #90caf9;
}

.tag-new {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

/* --- TOC (Table of Contents, in-page) --- */
.toc {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  margin: 0 0 var(--space-2xl);
}

.toc-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-list li {
  margin-bottom: var(--space-xs);
}

.toc-list a {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  display: block;
  padding: var(--space-xs) 0;
  transition: color 0.15s ease;
}

.toc-list a:hover {
  color: var(--color-accent);
}

.toc-list .toc-h3 {
  padding-left: var(--space-lg);
}

/* --- Horizontal Rule --- */
hr {
  border: none;
  border-top: 1px solid var(--color-border-light);
  margin: var(--space-2xl) 0;
}

/* --- Footer --- */
.page-footer {
  margin-left: var(--sidebar-width);
  padding: var(--space-xl);
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-light);
  background: var(--color-white);
}

.page-footer a {
  color: var(--color-accent);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 220px;
  }
}

@media (max-width: 768px) {
  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    max-height: none;
    padding: var(--space-md) 0;
  }

  .main-content,
  .page-footer {
    margin-left: 0;
  }

  .content-container {
    padding: var(--space-xl) var(--space-md);
  }

  .page-header {
    padding: var(--space-xl) var(--space-md);
  }

  .page-header h1 {
    font-size: 1.75rem;
  }

  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }

  .card-grid {
    grid-template-columns: 1fr;
  }

  table {
    font-size: 0.8rem;
  }

  thead th, tbody td {
    padding: 0.5rem 0.75rem;
  }
}

/* --- Print --- */
@media print {
  @page {
    size: A4;
    margin: 25mm 20mm 25mm 25mm; /* Korean government document standard margins */
  }

  body {
    font-size: 10pt;
    color: #000;
    background: #fff;
  }

  .sidebar,
  .breadcrumb {
    display: none;
  }

  .main-content,
  .page-footer {
    margin-left: 0;
  }

  .page-header {
    background: none;
    color: var(--color-navy);
    padding: 0 0 var(--space-md);
    border-bottom: 3px solid var(--color-navy);
  }

  .page-header h1 {
    color: var(--color-navy);
    font-size: 18pt;
  }

  .page-header .subtitle {
    color: var(--color-text-secondary);
  }

  .page-header .badge {
    background: none;
    border: 1px solid var(--color-navy);
    color: var(--color-navy);
  }

  h1, h2, h3, h4 {
    page-break-after: avoid;
  }

  table, pre, .diagram, .card {
    page-break-inside: avoid;
  }

  pre {
    background: #f5f5f5;
    color: #000;
    border: 1px solid #ccc;
    box-shadow: none;
  }

  a {
    color: var(--color-navy);
    text-decoration: underline;
  }

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
  }

  .page-footer {
    border-top: 1px solid #ccc;
  }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-navy { color: var(--color-navy); }
.text-accent { color: var(--color-accent); }
.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: 700; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Terminal Output (box-drawing table replacement) --- */
.terminal-output {
  background: var(--color-navy-dark);
  color: #E2E8F0;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin: 0 0 var(--space-xl);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.6;
  box-shadow: var(--shadow-md);
}

.terminal-output .terminal-title {
  text-align: center;
  margin-bottom: var(--space-sm);
  font-weight: 400;
}

.terminal-output table {
  width: auto;
  border-collapse: collapse;
  margin: 0 0 var(--space-sm);
  background: none;
  box-shadow: none;
}

.terminal-output th,
.terminal-output td {
  border: 1px solid #4A5568;
  padding: 0.2rem 0.75rem;
  text-align: left;
  color: #E2E8F0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: nowrap;
}

.terminal-output th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
}

.terminal-output .terminal-footer {
  margin-top: var(--space-sm);
  white-space: pre;
}