/* The Monograph - static/css/style.css */
:root {
  color-scheme: light dark;

  /* Palette - Light (from manifest.json) */
  --bg: #f4f3ef;
  --surface: #e8e6e1;
  --fg: #141518;
  --muted: #595e68;
  --accent: #1d4ed8;
  --accent-fg: #ffffff;

  /* Derived borders and shadows */
  --border: color-mix(in srgb, var(--fg) 14%, transparent);
  --border-subtle: color-mix(in srgb, var(--fg) 8%, transparent);
  --shadow-sm: 0 1px 2px color-mix(in srgb, var(--fg) 6%, transparent);
  --shadow: 0 4px 12px color-mix(in srgb, var(--fg) 8%, transparent);

  /* Typography */
  --font-display: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-text: "Source Sans 3", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Fluid type scale (§5) */
  --text-sm: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.2rem, 1.1rem + 0.5vw, 1.4rem);
  --text-xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --text-2xl: clamp(2rem, 1.6rem + 2vw, 3rem);
  --text-hero: clamp(2.5rem, 1.8rem + 3.5vw, 4.2rem);

  /* Spacing scale (§8) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;

  --transition: 0.15s ease-out;
  --measure: 65ch;
  --radius-sm: 4px;
}

:root[data-theme="dark"] {
  /* Palette - Dark (from manifest.json) */
  --bg: #0e0f12;
  --surface: #18191f;
  --fg: #f0f2f5;
  --muted: #8a91a0;
  --accent: #60a5fa;
  --accent-fg: #09132b;

  --border: color-mix(in srgb, var(--fg) 14%, transparent);
  --border-subtle: color-mix(in srgb, var(--fg) 8%, transparent);
  --shadow-sm: 0 1px 2px color-mix(in srgb, var(--fg) 20%, transparent);
  --shadow: 0 4px 12px color-mix(in srgb, var(--fg) 25%, transparent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0e0f12;
    --surface: #18191f;
    --fg: #f0f2f5;
    --muted: #8a91a0;
    --accent: #60a5fa;
    --accent-fg: #09132b;

    --border: color-mix(in srgb, var(--fg) 14%, transparent);
    --border-subtle: color-mix(in srgb, var(--fg) 8%, transparent);
    --shadow-sm: 0 1px 2px color-mix(in srgb, var(--fg) 20%, transparent);
    --shadow: 0 4px 12px color-mix(in srgb, var(--fg) 25%, transparent);
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg);
  color: var(--fg);
}

body {
  font-family: var(--font-text);
  font-size: var(--text-base);
  line-height: 1.6;
  background-color: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition);
}

a:hover {
  text-decoration: underline;
}

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

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 0.5rem 1rem;
  z-index: 1000;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  transition: top var(--transition);
}
.skip-link:focus {
  top: 1rem;
}

/* Band 1: Crisp Masthead (64px height) */
.masthead-band {
  height: 64px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--space-4);
  background-color: var(--bg);
}

.masthead-brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
}

.site-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
  line-height: 1;
}

.site-title a {
  color: inherit;
  text-decoration: none;
}

.issue-meta-tag {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.masthead-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.masthead-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-right: var(--space-3);
}

.masthead-nav a {
  font-family: var(--font-text);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.masthead-nav a:hover {
  color: var(--accent);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 0.35rem 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

.btn-icon:hover {
  background-color: var(--surface);
  border-color: var(--accent);
  color: var(--accent);
}

/* Band 2: Asymmetric Broadsheet Layout */
.broadsheet-layout {
  width: 100%;
}

.broadsheet-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  min-height: calc(100vh - 64px);
  width: 100%;
}

/* Vertical Specimen Rail (Signature Element - 120px wide) */
.specimen-rail {
  width: 120px;
  border-right: 1px solid var(--border);
  background-color: var(--surface);
  user-select: none;
  height: 100%;
}

.specimen-rail-inner {
  position: sticky;
  top: 0;
  height: 100vh;
  max-height: 100vh;
  padding: var(--space-5) var(--space-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}

.specimen-rail-text {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 900;
  letter-spacing: 0.15em;
  color: var(--fg);
  white-space: nowrap;
  opacity: 0.9;
}

.specimen-rail-sub {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.broadsheet-main-track {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.broadsheet-hero-band {
  display: grid;
  grid-template-columns: 2fr 1fr;
  min-height: 516px;
  border-bottom: 1px solid var(--border);
}

/* Lead Column (2fr, ~700px) */
.lead-column {
  padding: var(--space-5);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.lead-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
  font-weight: 600;
}

.lead-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.lead-title a {
  color: inherit;
}

.lead-title a:hover {
  color: var(--accent);
  text-decoration: none;
}

.lead-dek {
  font-size: var(--text-lg);
  color: var(--muted);
  line-height: 1.4;
  margin-bottom: var(--space-4);
  max-width: 58ch;
}

.lead-meta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
  margin-bottom: var(--space-4);
  display: flex;
  gap: var(--space-3);
}

.lead-diagram-container {
  margin-top: auto;
  padding: var(--space-3);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  max-width: 100%;
  overflow: hidden;
}

svg {
  max-width: 100%;
  overflow: hidden;
}

.blueprint-svg {
  width: 100%;
  height: auto;
  max-height: 210px;
  display: block;
  max-width: 100%;
  overflow: hidden;
}

/* Secondary Column (1fr, ~360px) */
.secondary-column {
  display: flex;
  flex-direction: column;
}

.secondary-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--fg);
  background-color: var(--surface);
}

.dispatch-card {
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  transition: background-color var(--transition);
}

.dispatch-card:last-child {
  border-bottom: none;
}

.dispatch-card:hover {
  background-color: var(--surface);
}

.dispatch-meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}

.dispatch-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.25;
  color: var(--fg);
}

.dispatch-title a {
  color: inherit;
}

.dispatch-title a:hover {
  color: var(--accent);
}

.dispatch-summary {
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Band 3: Issue Colophon Bar (66px height) */
.colophon-band {
  min-height: 66px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--space-4);
  padding-block: var(--space-2);
  background-color: var(--surface);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.colophon-tags {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  max-width: 100%;
}

.tag-pill {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  background-color: var(--bg);
  border: 1px solid var(--border);
  color: var(--fg);
  font-size: 0.78rem;
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), color var(--transition);
}

.tag-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.colophon-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  max-width: 100%;
}

.colophon-links a {
  color: var(--muted);
}

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

.broadsheet-intro-section {
  padding: var(--space-5);
  border-bottom: 1px solid var(--border);
}

.broadsheet-archive-section {
  padding: var(--space-5);
}

/* Main Layout & Interior Pages */
.main-content {
  flex: 1;
}

.container {
  max-width: 1140px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.page-header {
  padding-block: var(--space-5) var(--space-4);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-5);
}

.page-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--fg);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.page-meta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
  margin-top: var(--space-2);
}

/* Prose Styling */
.prose {
  max-width: var(--measure);
  margin-inline: auto;
  font-size: var(--text-base);
  line-height: 1.7;
}

.prose p {
  margin-bottom: var(--space-4);
}

.prose h2 {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--fg);
  line-height: 1.25;
}

.prose h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
  color: var(--fg);
}

.prose ul, .prose ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-4);
}

.prose li {
  margin-bottom: var(--space-1);
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding-left: var(--space-4);
  margin-block: var(--space-4);
  font-style: italic;
  color: var(--muted);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin-block: var(--space-6);
}

.prose pre, pre {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin-bottom: var(--space-4);
  color: var(--fg);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--surface);
  padding: 0.15em 0.35em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.prose pre code {
  background: transparent;
  padding: 0;
  border: none;
}

/* Syntax Highlighting Token Overrides (§6) */
.hljs {
  background: transparent;
  color: var(--fg);
}
.hljs-comment, .hljs-quote { color: var(--muted); }
.hljs-keyword, .hljs-selector-tag, .hljs-subst { color: var(--accent); font-weight: 600; }
.hljs-string, .hljs-title, .hljs-section, .hljs-attribute, .hljs-literal, .hljs-template-tag, .hljs-template-variable, .hljs-type, .hljs-addition {
  color: color-mix(in srgb, var(--accent) 75%, var(--fg));
}

/* Grid & Section Lists */
.issues-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: var(--space-4);
  margin-block: var(--space-5);
}

.issue-card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color var(--transition), transform var(--transition);
}

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

.issue-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--space-2);
  line-height: 1.25;
}

.issue-card-title a {
  color: var(--fg);
}

@media (min-width: 768px) {
  .issue-card.featured-issue {
    grid-column: span 2;
  }
  .issue-card.featured-issue .issue-card-title {
    font-size: var(--text-2xl);
  }
}

.issue-card-title a:hover {
  color: var(--accent);
}

.issue-card-desc {
  font-size: var(--text-sm);
  color: var(--muted);
  margin-bottom: var(--space-3);
}

.issue-card-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

/* Taxonomy Lists */
.term-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block: var(--space-4);
}

.term-item a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.term-item a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.term-count {
  background-color: var(--bg);
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  color: var(--muted);
}

/* Site Footer */
.site-foot {
  margin-top: auto;
  border-top: 1px solid var(--border);
  background-color: var(--bg);
  padding-block: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
}

.site-foot-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.site-foot nav {
  display: flex;
  gap: var(--space-4);
}

.site-foot nav a {
  color: var(--muted);
}

.site-foot nav a:hover {
  color: var(--accent);
}

/* Search Overlay Modal */
.search-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 10vh;
  padding-inline: var(--space-3);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  max-width: 100vw;
  box-sizing: border-box;
}

.search-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.search-dialog {
  background-color: var(--bg);
  border: 1px solid var(--border);
  width: min(640px, 100%);
  max-width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

.search-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background-color: var(--surface);
}

.search-input {
  flex: 1;
  background: transparent;
  border: none;
  font-family: var(--font-text);
  font-size: var(--text-lg);
  color: var(--fg);
  outline: none;
}

.search-results-list {
  list-style: none;
  max-height: 380px;
  overflow-y: auto;
}

.search-results-list li {
  border-bottom: 1px solid var(--border-subtle);
}

.search-results-list li a {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--fg);
  font-family: var(--font-display);
  font-weight: 600;
  transition: background-color var(--transition);
}

.search-results-list li a:hover {
  background-color: var(--surface);
  color: var(--accent);
  text-decoration: none;
}

.search-status-bar {
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--surface);
}

/* Mobile Responsive Override (Variance = 6 collapse below 768px in same block) */
@media (max-width: 768px) {
  .broadsheet-grid {
    display: flex;
    flex-direction: column;
    min-height: auto;
  }

  .specimen-rail {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .specimen-rail-inner {
    position: static;
    height: auto;
    max-height: none;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-4);
    width: 100%;
  }

  .specimen-rail-text,
  .specimen-rail-sub {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .specimen-rail-text {
    font-size: var(--text-base);
  }

  .broadsheet-hero-band {
    display: flex;
    flex-direction: column;
    min-height: auto;
  }

  .lead-column {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: var(--space-4);
  }

  .broadsheet-intro-section,
  .broadsheet-archive-section {
    padding: var(--space-4);
  }

  .masthead-band {
    height: auto;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3) var(--space-4);
    gap: var(--space-2);
  }

  .masthead-brand {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }

  .masthead-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: var(--space-2);
    flex-wrap: wrap;
  }

  .masthead-nav {
    display: flex;
    gap: var(--space-3);
    margin-right: 0;
    flex-wrap: wrap;
  }

  .masthead-nav a {
    font-size: 0.8rem;
  }

  .colophon-band {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4);
    gap: var(--space-3);
  }

  .colophon-links {
    flex-wrap: wrap;
    gap: var(--space-2) var(--space-3);
  }

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

/* Reduced Motion Guard (§9) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}