/* PC Life Design System — Warm Workshop Palette & Typography */

:root {
  --font-display: 'Hepta Slab', Georgia, serif;
  --font-body: 'Mukta', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --color-primary: #3d3225;
  --color-secondary: #87796a;
  --color-accent: #b5762f;
  --color-surface: #faf7f1;
  --color-surface-card: #f2ece1;
  --color-ink: #211b12;
  --color-border: #dcd4c5;
  --color-border-dark: #87796a;
}

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

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-ink);
  background-color: var(--color-surface);
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-canvas {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

/* Base typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; margin-top: 2rem; }
h3 { font-size: 1.2rem; margin-top: 1.5rem; }

p {
  margin-bottom: 1.25rem;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
  color: var(--color-primary);
}

/* Masthead Navigation (Inline Masthead) */
.masthead-container {
  margin-bottom: 2.5rem;
}

.masthead-rule-top {
  height: 2px;
  background-color: var(--color-primary);
  width: 100%;
}

.masthead-brand-box {
  text-align: center;
  padding: 1.25rem 0;
}

.masthead-brand-title {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-block;
}

.masthead-brand-title:hover {
  color: var(--color-accent);
}

.masthead-rule-bottom {
  height: 1px;
  background-color: var(--color-primary);
  width: 100%;
}

.masthead-subbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
}

.masthead-navigation {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.masthead-nav-link {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-ink);
  text-decoration: none;
  position: relative;
}

.masthead-nav-link:hover,
.masthead-nav-link.active {
  color: var(--color-accent);
}

.masthead-nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -0.6rem;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

.masthead-meta-info {
  font-size: 0.8125rem;
  color: var(--color-secondary);
  font-family: var(--font-body);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.masthead-meta-sep {
  color: var(--color-border-dark);
}

/* Homepage Title & Table of Contents */
.homepage-title {
  font-size: 2.25rem;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.site-toc-wrapper {
  background-color: var(--color-surface-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
  border-radius: 2px;
}

.toc-heading {
  font-size: 1.125rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-weight: 600;
}

.section-toc-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.section-toc-table th {
  border-bottom: 2px solid var(--color-border-dark);
  padding: 0.5rem 0.75rem 0.5rem 0;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-primary);
  font-size: 0.875rem;
  text-transform: uppercase;
}

.section-toc-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0.75rem 0.75rem 0;
  vertical-align: top;
}

.section-toc-table tr:last-child td {
  border-bottom: none;
}

.toc-cell-name {
  font-weight: 600;
  width: 30%;
  white-space: nowrap;
}

.toc-cell-name a {
  color: var(--color-primary);
}

.toc-cell-desc {
  color: var(--color-ink);
}

/* Dense Article Ledger */
.dense-article-section {
  margin-top: 2.5rem;
  margin-bottom: 2.5rem;
}

.section-heading {
  font-size: 1.35rem;
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 0.4rem;
  margin-bottom: 1.25rem;
}

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

.dense-ledger-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px dotted var(--color-border-dark);
}

.dense-ledger-link {
  font-weight: 600;
  color: var(--color-ink);
  text-decoration: none;
  font-size: 1.05rem;
}

.dense-ledger-link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.dense-ledger-dots {
  flex: 1;
  border-bottom: 1px dotted var(--color-secondary);
  min-width: 1rem;
  margin: 0 0.25rem 0.25em 0.25rem;
}

.dense-ledger-date {
  font-size: 0.875rem;
  color: var(--color-secondary);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Article Prose & Mandatory List Formatting Rule */
.article-prose,
.homepage-intro {
  max-width: 68ch;
  line-height: 1.7;
  font-size: 1.0625rem;
}

/* CRITICAL BRIEF REQUIREMENT: List rule that covers BOTH .article-prose AND .homepage-intro explicitly */
.article-prose ul,
.homepage-intro ul,
.article-prose ol,
.homepage-intro ol {
  padding-left: 1.75rem;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

.article-prose li,
.homepage-intro li {
  margin-bottom: 0.5rem;
}

.article-prose blockquote,
.homepage-intro blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--color-secondary);
  background-color: var(--color-surface-card);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
}

.article-prose code,
.homepage-intro code {
  font-family: monospace;
  font-size: 0.9em;
  background-color: var(--color-surface-card);
  padding: 0.15em 0.35em;
  border-radius: 2px;
  border: 1px solid var(--color-border);
}

.article-prose pre,
.homepage-intro pre {
  background-color: var(--color-primary);
  color: var(--color-surface);
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
  border-radius: 3px;
}

.article-prose pre code,
.homepage-intro pre code {
  background: none;
  border: none;
  color: inherit;
  padding: 0;
}

/* Single Article Header */
.single-article-layout {
  max-width: 68ch;
  margin: 0 auto;
}

.article-header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1.5rem;
}

.article-title {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
}

.article-lead {
  font-size: 1.2rem;
  color: var(--color-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.article-meta {
  font-size: 0.875rem;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

/* Section Listing Layout */
.section-list-layout {
  width: 100%;
}

.section-header {
  margin-bottom: 2rem;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.section-description {
  font-size: 1.15rem;
  color: var(--color-secondary);
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding-top: 3rem;
}

.footer-divider {
  height: 1px;
  background-color: var(--color-border);
  margin-bottom: 1.5rem;
}

.footer-content {
  font-size: 0.875rem;
  color: var(--color-secondary);
  text-align: center;
}

.footer-brand {
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.footer-links a {
  color: var(--color-secondary);
  text-decoration: none;
  margin: 0 0.25rem;
}

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

/* Responsive adjustments for mobile viewports (down to 375px) */
@media (max-width: 640px) {
  .site-canvas {
    padding: 1rem 0.875rem 2rem 0.875rem;
  }
  
  .masthead-brand-title {
    font-size: 2rem;
  }
  
  .masthead-subbar {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
  }
  
  .masthead-navigation {
    justify-content: center;
    gap: 0.875rem;
  }
  
  .homepage-title {
    font-size: 1.75rem;
  }
  
  .toc-cell-name {
    width: 35%;
  }

  .dense-ledger-item {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem 0.5rem;
  }
  
  .dense-ledger-dots {
    display: none;
  }

  .dense-ledger-date {
    margin-left: auto;
  }

  .article-title {
    font-size: 1.75rem;
  }
}