/* ==========================================================================
   November - CSS Tokens & Design System
   A seasonal journal of architectural light, cold materials, and late-autumn urbanism
   ========================================================================== */

:root {
  /* Palette - Light (verbatim from manifest) */
  --bg: #f7f4ee;
  --surface: #ede8df;
  --fg: #1c1917;
  --muted: #5e574e;
  --accent: #6b216b;
  --accent-fg: #ffffff;

  /* Derived tokens */
  --border: color-mix(in srgb, var(--fg) 15%, transparent);
  --border-subtle: color-mix(in srgb, var(--fg) 8%, transparent);
  --accent-tint: color-mix(in srgb, var(--accent) 10%, transparent);

  /* Typography */
  --font-display: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  /* Fluid Type Scale */
  --text-sm: clamp(0.8rem, 0.78rem + 0.12vw, 0.875rem);
  --text-base: clamp(0.95rem, 0.92rem + 0.2vw, 1.05rem);
  --text-lg: clamp(1.15rem, 1.08rem + 0.4vw, 1.35rem);
  --text-xl: clamp(1.4rem, 1.28rem + 0.7vw, 1.85rem);
  --text-2xl: clamp(1.8rem, 1.55rem + 1.4vw, 2.75rem);
  --text-hero: clamp(2.2rem, 1.8rem + 2.5vw, 3.8rem);

  /* Spacing Scale (Visual Density 5 = standard 4-6rem rhythm) */
  --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;

  --measure: 65ch;
  --radius: 0px;
  --transition: opacity 0.2s ease-out, transform 0.2s ease-out, background-color 0.2s ease-out, color 0.2s ease-out;
}

/* Palette - Dark (verbatim from manifest) */
:root[data-theme="dark"] {
  --bg: #141216;
  --surface: #1e1b22;
  --fg: #ebe7ee;
  --muted: #a097a8;
  --accent: #ca76ca;
  --accent-fg: #141216;

  --border: color-mix(in srgb, var(--fg) 16%, transparent);
  --border-subtle: color-mix(in srgb, var(--fg) 9%, transparent);
  --accent-tint: color-mix(in srgb, var(--accent) 15%, transparent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141216;
    --surface: #1e1b22;
    --fg: #ebe7ee;
    --muted: #a097a8;
    --accent: #ca76ca;
    --accent-fg: #141216;

    --border: color-mix(in srgb, var(--fg) 16%, transparent);
    --border-subtle: color-mix(in srgb, var(--fg) 9%, transparent);
    --accent-tint: color-mix(in srgb, var(--accent) 15%, transparent);
  }
}

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

html {
  color-scheme: light dark;
  background-color: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--fg);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 0.5rem 1rem;
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 1rem;
}

/* Focus outline */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

/* ==========================================================================
   Homepage Scene & Grid Layout (Design Variance = 7)
   ========================================================================== */

.page-wrapper {
  display: flex;
  min-height: 100vh;
}

/* Signature Element: Oversized 180px Vertical Datum Band */
.datum-band {
  width: 180px;
  min-width: 180px;
  background-color: var(--accent);
  color: var(--accent-fg);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) 0;
  user-select: none;
  border-right: 1px solid var(--border);
  transition: var(--transition);
}

.datum-text {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
}

.datum-mark {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  opacity: 0.85;
}

/* Main Content Container */
.content-canvas {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Home Scene Bands (Summing to 650px height) */
.home-scene {
  display: flex;
  flex-direction: column;
  min-height: 650px;
  max-height: 650px;
  border-bottom: 1px solid var(--border);
}

/* Band 1: Masthead (Height: 56px) */
.band-masthead {
  height: 56px;
  min-height: 56px;
  max-height: 56px;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background-color: var(--bg);
}

.journal-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg);
}

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

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

.nav-link {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--fg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 0.35rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

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

/* Band 2: Asymmetric Editorial Layout (Height: 530px, Grid Rule) */
.band-editorial {
  height: 530px;
  min-height: 530px;
  max-height: 530px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

/* Left Column: Lead Essay (2fr) */
.lead-col {
  padding: var(--space-4);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--bg);
  overflow-y: auto;
}

.lead-header {
  margin-bottom: var(--space-3);
}

.lead-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-1);
}

.lead-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}

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

.lead-dek {
  font-size: var(--text-base);
  color: var(--muted);
  line-height: 1.45;
  margin-bottom: var(--space-2);
  max-width: var(--measure);
}

.lead-byline {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
}

/* SVG Architectural Section Diagram */
.diagram-wrapper {
  margin-top: var(--space-2);
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-3);
}

.diagram-svg {
  width: 100%;
  height: 180px;
  display: block;
}

.diagram-caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: var(--space-2);
  text-align: right;
  letter-spacing: 0.03em;
}

/* Right Column: Stacked Dispatches (1fr) */
.dispatches-col {
  display: flex;
  flex-direction: column;
  background-color: var(--surface);
}

.dispatches-header {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  background-color: var(--bg);
}

.dispatch-card {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: var(--transition);
}

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

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

.dispatch-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: var(--space-1);
}

.dispatch-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--space-1);
}

.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: Colophon Bar (Height: 64px) */
.band-colophon {
  height: 64px;
  min-height: 64px;
  max-height: 64px;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--bg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.colophon-tags {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.tag-pill {
  padding: 0.2rem 0.5rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--fg);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.tag-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.colophon-links {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  color: var(--muted);
}

/* ==========================================================================
   Interior Pages & Section Content
   ========================================================================== */

.main-body {
  padding: var(--space-6) var(--space-4);
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.section-header {
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-3);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--fg);
}

.essay-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}

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

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

.essay-card-date {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);
  margin-bottom: var(--space-2);
}

.essay-card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  line-height: 1.25;
}

.essay-card-summary {
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: var(--space-3);
}

/* Prose Styling */
.prose {
  max-width: var(--measure);
  margin: 0 auto;

  & h1 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
    line-height: 1.15;
  }

  & h2 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    margin-top: var(--space-5);
    margin-bottom: var(--space-3);
    line-height: 1.25;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: var(--space-1);
  }

  & h3 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-top: var(--space-4);
    margin-bottom: var(--space-2);
  }

  & p {
    margin-bottom: var(--space-4);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--fg);
  }

  & blockquote {
    border-left: 3px solid var(--accent);
    padding-left: var(--space-3);
    margin: var(--space-4) 0;
    font-style: italic;
    color: var(--muted);
  }

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

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

  & code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background-color: var(--surface);
    padding: 0.15em 0.4em;
    border: 1px solid var(--border-subtle);
  }

  & pre {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: var(--space-3);
    overflow-x: auto;
    margin-bottom: var(--space-4);

    & code {
      background: transparent;
      padding: 0;
      border: none;
    }
  }
}

.hljs {
  background: transparent !important;
}

/* Site Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: var(--space-5) var(--space-4);
  background-color: var(--bg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--muted);

  & .footer-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
  }

  & .footer-links {
    display: flex;
    gap: var(--space-3);
  }
}

/* Search Modal Overlay */
.search-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(20, 18, 22, 0.75);
  backdrop-filter: blur(4px);
  z-index: 10000;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 10vh;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-out;
}

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

.search-modal {
  background-color: var(--bg);
  border: 1px solid var(--border);
  width: 90%;
  max-width: 600px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
}

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

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

.search-input:focus {
  outline: none;
}

.search-results-list {
  list-style: none;
  max-height: 50vh;
  overflow-y: auto;
}

.search-results-list li a {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-display);
  font-size: var(--text-base);
}

.search-results-list li a:hover {
  background-color: var(--surface);
  color: var(--accent);
}

/* ==========================================================================
   Responsive Overrides (Design Variance = 7 Single Column Collapse)
   ========================================================================== */

@media (max-width: 768px) {
  .page-wrapper {
    flex-direction: column;
    overflow-x: hidden;
  }

  .datum-band {
    width: 100%;
    min-width: 100%;
    height: 48px;
    flex-direction: row;
    padding: 0 var(--space-4);
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .datum-text {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .band-masthead {
    height: auto;
    min-height: 48px;
    max-height: none;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
  }

  .issue-meta {
    display: none;
  }

  .home-scene {
    max-height: none;
    height: auto;
  }

  .band-editorial {
    grid-template-columns: 1fr;
    height: auto;
    max-height: none;
  }

  .lead-col {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .band-colophon {
    height: auto;
    max-height: none;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
  }

  .site-footer .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   Reduced Motion Guard (Motion Intensity = 4)
   ========================================================================== */

@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;
  }
}