/* ============================================================
   BRIDGE FORENSIC LOGIC — Design System
   
   A restrained, archival aesthetic inspired by national archives,
   scientific institutions, and university press publications.
   
   Color philosophy: deep charcoal, warm white, steel blue, gold
   Typography: Cormorant Garamond (display) + Source Sans 3 (body)
   
   All values use CSS custom properties for maintainability.
   ============================================================ */

/* ------------------------------------------------------------
   1. Design Tokens
   ------------------------------------------------------------ */

:root {
  /* Type Scale — fluid, using clamp() */
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.25rem, 1rem + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem, 1.2rem + 2.5vw, 3.25rem);
  --text-3xl:  clamp(2.5rem, 1rem + 4vw, 4.5rem);
  --text-hero: clamp(2.75rem, 0.5rem + 6vw, 6rem);

  /* Spacing — 4px base unit */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Content Widths */
  --content-narrow: 640px;
  --content-default: 880px;
  --content-wide: 1200px;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;

  /* Transitions */
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Font Families */
  --font-display: 'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --font-body: 'Source Sans 3', 'Helvetica Neue', Arial, sans-serif;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
}

/* ------------------------------------------------------------
   2. Color System — Light Mode (default)
   ------------------------------------------------------------ */

:root,
[data-theme="light"] {
  --color-bg: #f5f2ed;            /* warm white */
  --color-surface: #faf8f4;       /* slightly lighter warm white */
  --color-surface-2: #fdfbf7;
  --color-surface-offset: #ede9e2;
  --color-divider: #d8d3cb;
  --color-border: #c4bfb6;

  --color-text: #1a1a1a;          /* deep charcoal */
  --color-text-muted: #555350;
  --color-text-faint: #8a8680;
  --color-text-inverse: #f5f2ed;

  --color-primary: #2c4a6a;       /* steel blue */
  --color-primary-hover: #1e3a56;
  --color-primary-soft: #e8edf2;

  --color-gold: #b08d57;          /* subtle gold */
  --color-gold-hover: #9a7845;
  --color-gold-soft: #f0e8d8;

  --color-accent-rule: #b08d57;   /* gold rule lines */
}

/* ------------------------------------------------------------
   3. Color System — Dark Mode
   ------------------------------------------------------------ */

[data-theme="dark"] {
  --color-bg: #141517;            /* deep charcoal */
  --color-surface: #1a1c1e;
  --color-surface-2: #1e2022;
  --color-surface-offset: #18191b;
  --color-divider: #2a2c2e;
  --color-border: #383a3c;

  --color-text: #e2ddd5;          /* warm white text */
  --color-text-muted: #9a958e;
  --color-text-faint: #6a6660;
  --color-text-inverse: #1a1a1a;

  --color-primary: #7a9bc0;       /* lighter steel blue */
  --color-primary-hover: #9ab5d4;
  --color-primary-soft: #1e2832;

  --color-gold: #c8a878;          /* lighter gold */
  --color-gold-hover: #d8b888;
  --color-gold-soft: #2a2418;

  --color-accent-rule: #8a7550;
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #141517;
    --color-surface: #1a1c1e;
    --color-surface-2: #1e2022;
    --color-surface-offset: #18191b;
    --color-divider: #2a2c2e;
    --color-border: #383a3c;
    --color-text: #e2ddd5;
    --color-text-muted: #9a958e;
    --color-text-faint: #6a6660;
    --color-text-inverse: #1a1a1a;
    --color-primary: #7a9bc0;
    --color-primary-hover: #9ab5d4;
    --color-primary-soft: #1e2832;
    --color-gold: #c8a878;
    --color-gold-hover: #d8b888;
    --color-gold-soft: #2a2418;
    --color-accent-rule: #8a7550;
  }
}

/* ------------------------------------------------------------
   4. Base Stylesheet (reset + defaults)
   ------------------------------------------------------------ */

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
  hanging-punctuation: first last;
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition), color var(--transition);
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.2;
  font-weight: 500;
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

::selection {
  background: rgba(176, 141, 87, 0.2);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

.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;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  padding: var(--space-3) var(--space-5);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  z-index: 100;
  font-size: var(--text-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

/* Reduced motion */
@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;
  }
}

/* ------------------------------------------------------------
   5. Layout Utilities
   ------------------------------------------------------------ */

.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.container--default {
  max-width: var(--content-default);
}

.section {
  padding-block: clamp(var(--space-12), 6vw, var(--space-24));
}

.section--tight {
  padding-block: clamp(var(--space-8), 4vw, var(--space-16));
}

.section--offset {
  background: var(--color-surface);
}

/* ------------------------------------------------------------
   6. Typography Components
   ------------------------------------------------------------ */

.eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.display {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.display--hero {
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.lead {
  font-size: var(--text-lg);
  line-height: 1.5;
  color: var(--color-text-muted);
  font-weight: 300;
}

.prose {
  max-width: 68ch;
}

.prose p {
  margin-bottom: var(--space-5);
}

.prose h2 {
  font-size: var(--text-xl);
  margin-top: var(--space-12);
  margin-bottom: var(--space-4);
}

.prose h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  font-family: var(--font-body);
  font-weight: 600;
}

.prose ul, .prose ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-6);
}

.prose ul li {
  list-style: disc;
  margin-bottom: var(--space-2);
}

.prose ol li {
  list-style: decimal;
  margin-bottom: var(--space-2);
}

.prose blockquote {
  border-left: 2px solid var(--color-gold);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   7. Gold Rule Divider
   ------------------------------------------------------------ */

.rule {
  width: 48px;
  height: 1px;
  background: var(--color-accent-rule);
  border: none;
  margin-block: var(--space-6);
}

.rule--full {
  width: 100%;
  height: 1px;
  background: var(--color-divider);
}

/* ------------------------------------------------------------
   8. Header / Navigation
   ------------------------------------------------------------ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
  transition: box-shadow var(--transition), background var(--transition);
}

.site-header--scrolled {
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 64px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--color-text);
}

.logo__mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.logo__text {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  line-height: 1;
}

.logo__text-sub {
  display: block;
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Desktop Nav */
.nav-main {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-main__link {
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-main__link:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav-main__link--active {
  color: var(--color-text);
  font-weight: 500;
}

/* Nav dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown__trigger {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.nav-dropdown:hover .nav-dropdown__menu,
.nav-dropdown:focus-within .nav-dropdown__menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown__item {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-dropdown__item:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

.nav-dropdown__section-label {
  display: block;
  padding: var(--space-2) var(--space-3) var(--space-1);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gold);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-offset);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle--open span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}

.nav-toggle--open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle--open span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* Mobile nav panel */
.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-6);
  overflow-y: auto;
  z-index: 49;
}

.mobile-nav--open {
  display: block;
}

.mobile-nav__group {
  margin-bottom: var(--space-6);
}

.mobile-nav__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-2);
}

.mobile-nav__link {
  display: block;
  padding: var(--space-2) 0;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-divider);
}

.mobile-nav__link:hover,
.mobile-nav__link--active {
  color: var(--color-text);
}

/* ------------------------------------------------------------
   9. Footer
   ------------------------------------------------------------ */

.site-footer {
  background: var(--color-surface-offset);
  border-top: 1px solid var(--color-divider);
  padding-block: var(--space-16) var(--space-8);
  margin-top: var(--space-32);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.site-footer__brand {
  max-width: 320px;
}

.site-footer__brand p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  line-height: 1.5;
}

.site-footer__col h4 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}

.site-footer__col ul li {
  margin-bottom: var(--space-2);
}

.site-footer__col a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.site-footer__col a:hover {
  color: var(--color-text);
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.site-footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.site-footer__disclaimer {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 400px;
}

.site-footer__ip {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 560px;
  line-height: 1.5;
  margin-top: var(--space-2);
}

/* ------------------------------------------------------------
   10. Hero Section
   ------------------------------------------------------------ */

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 70vh;
  padding-block: var(--space-24);
  position: relative;
}

.hero__content {
  max-width: 900px;
  padding-inline: var(--space-4);
}

.hero__statement {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin-bottom: var(--space-8);
}

.hero__statement em {
  font-style: italic;
  color: var(--color-gold);
}

.hero__sub {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  line-height: 1.4;
}

.hero__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-inline: auto;
  line-height: 1.7;
}

/* ------------------------------------------------------------
   11. Page Header (interior pages)
   ------------------------------------------------------------ */

.page-header {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-8);
  border-bottom: 1px solid var(--color-divider);
}

.page-header__eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}

.page-header__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: var(--space-4);
}

.page-header__desc {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 60ch;
  font-weight: 300;
  line-height: 1.5;
}

/* ------------------------------------------------------------
   12. Cards / Pathways
   ------------------------------------------------------------ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  transition: border-color var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.card__eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-3);
}

.card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.card__link {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.card__link::after {
  content: '\2192';
  transition: transform var(--transition);
}

.card:hover .card__link::after {
  transform: translateX(4px);
}

/* ------------------------------------------------------------
   13. Pathway Cards (homepage)
   ------------------------------------------------------------ */

.pathway {
  display: flex;
  flex-direction: column;
  padding: var(--space-10);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.pathway:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-md);
  color: inherit;
}

.pathway__number {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}

.pathway__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.pathway__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.pathway__arrow {
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
}

/* ------------------------------------------------------------
   14. Service List
   ------------------------------------------------------------ */

.service-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.service-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-8);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-divider);
}

.service-item__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
}

.service-item__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ------------------------------------------------------------
   15. Boundaries / Notice Box
   ------------------------------------------------------------ */

.notice {
  background: var(--color-surface-offset);
  border-left: 3px solid var(--color-gold);
  padding: var(--space-8);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.notice__title {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}

.notice ul {
  padding-left: var(--space-5);
}

.notice ul li {
  list-style: disc;
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
  color: var(--color-text-muted);
}

/* ------------------------------------------------------------
   16. Archive Index
   ------------------------------------------------------------ */

.archive-index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-4);
}

.archive-entry {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: inherit;
}

.archive-entry:hover {
  border-color: var(--color-gold);
  box-shadow: var(--shadow-sm);
  color: inherit;
}

.archive-entry__meta {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

.archive-entry__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.archive-entry__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ------------------------------------------------------------
   17. Publication / Book Card
   ------------------------------------------------------------ */

.book-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--space-8);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  margin-bottom: var(--space-6);
}

.book-card__cover {
  width: 180px;
  height: 270px;
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-align: center;
  padding: var(--space-4);
}

.book-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.book-card__meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.book-card__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

/* ------------------------------------------------------------
   18. Table of Contents / Sidebar
   ------------------------------------------------------------ */

.toc {
  position: sticky;
  top: var(--space-16);
  align-self: start;
}

.toc__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-3);
}

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

.toc ul li a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: block;
  padding: var(--space-1) 0;
}

.toc ul li a:hover {
  color: var(--color-text);
}

/* ------------------------------------------------------------
   19. Layer Badge / Section Identity
   ------------------------------------------------------------ */

.layer-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-gold);
  border-radius: var(--radius-full);
}

.layer-badge--narrowlight {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.layer-badge--archive {
  color: var(--color-text-muted);
  border-color: var(--color-border);
}

/* ------------------------------------------------------------
   20. Contact
   ------------------------------------------------------------ */

.contact-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.contact-info__item h3 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-2);
}

.contact-info__item p {
  font-size: var(--text-base);
  color: var(--color-text);
}

/* ------------------------------------------------------------
   21. FAQ / Accordion
   ------------------------------------------------------------ */

.faq-item {
  border-bottom: 1px solid var(--color-divider);
}

.faq-item__question {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  padding: var(--space-5) 0;
  color: var(--color-text);
  width: 100%;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item__answer {
  padding-bottom: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-base);
  line-height: 1.6;
}

/* ------------------------------------------------------------
   22. Two-Column Layout
   ------------------------------------------------------------ */

.two-col {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* ------------------------------------------------------------
   23. Placeholder / TODO
   ------------------------------------------------------------ */

.todo {
  display: inline-block;
  font-size: var(--text-xs);
  font-family: monospace;
  background: var(--color-gold-soft);
  color: var(--color-gold-hover);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--color-gold);
}

/* ------------------------------------------------------------
   24. Breadcrumb
   ------------------------------------------------------------ */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-6);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-text);
}

.breadcrumb__sep {
  color: var(--color-text-faint);
}

/* ------------------------------------------------------------
   25. Stat / Principle Grid
   ------------------------------------------------------------ */

.principle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-8);
}

.principle {
  padding: var(--space-6) 0;
}

.principle__number {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-gold);
  margin-bottom: var(--space-2);
}

.principle__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.principle__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ------------------------------------------------------------
   26. Responsive Breakpoints
   ------------------------------------------------------------ */

@media (max-width: 960px) {
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
    margin-bottom: var(--space-8);
  }

  .contact-info {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-main {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    min-height: auto;
    padding-block: var(--space-16);
  }

  .hero__statement {
    font-size: var(--text-xl);
    line-height: 1.25;
  }

  .hero__sub {
    font-size: var(--text-lg);
    line-height: 1.45;
  }

  .hero__desc {
    font-size: 1rem;
    line-height: 1.75;
    max-width: 52ch;
  }

  .hero__content {
    padding-inline: var(--space-2);
  }

  .card-grid--3 {
    grid-template-columns: 1fr;
  }

  .service-item {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .book-card {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .book-card__cover {
    margin-inline: auto;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .site-footer__ip {
    max-width: 100%;
  }

  .display {
    font-size: var(--text-xl);
  }

  .page-header__title {
    font-size: var(--text-xl);
  }

  .page-header__desc {
    font-size: var(--text-base);
    line-height: 1.6;
  }

  .prose {
    max-width: 100%;
  }

  .pathway {
    padding: var(--space-6);
  }
}

@media (max-width: 480px) {
  .container {
    padding-inline: var(--space-4);
  }

  .hero {
    padding-block: var(--space-12);
  }

  .hero__statement {
    font-size: var(--text-lg);
    line-height: 1.3;
  }

  .hero__sub {
    font-size: 1rem;
    line-height: 1.5;
  }

  .hero__desc {
    font-size: 1rem;
    max-width: 100%;
  }

  .section {
    padding-block: clamp(var(--space-8), 8vw, var(--space-16));
  }

  .prose h2 {
    font-size: var(--text-lg);
  }

  .prose h3 {
    font-size: var(--text-base);
  }

  .pathway {
    padding: var(--space-5);
  }

  .pathway__desc {
    font-size: var(--text-sm);
    line-height: 1.6;
  }
}

/* ------------------------------------------------------------
   27. Print Styles
   ------------------------------------------------------------ */

@media print {
  .site-header,
  .site-footer,
  .nav-toggle,
  .mobile-nav,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }
}