:root {
  --bg-canvas: #fbf1f0;
  --bg-surface: #fffafa;
  --bg-surface-alt: #f5e8e7;
  --text-primary: #1c1917;
  --text-muted: #645553;
  --accent-plum: #6b2155;
  --accent-plum-deep: #481438;
  --accent-plum-light: #943276;
  --accent-tint: #ebd7e3;
  --border-plum: rgba(107, 33, 85, 0.22);
  --border-plum-strong: #6b2155;
  --radius-subtle: 4px;
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --radial-glow: radial-gradient(circle at 50% 30%, rgba(107, 33, 85, 0.08) 0%, rgba(251, 241, 240, 0) 70%);
}

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

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  overflow-wrap: anywhere;
  hyphens: auto;
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, .brand-title, .nav-link, .btn, .eyebrow, .tab-btn {
  font-family: "Arial Narrow", "Helvetica Neue", sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.08;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--accent-plum);
}

h3 {
  font-size: 1.15rem;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

p.muted {
  color: var(--text-muted);
  font-size: 0.95rem;
}

a {
  color: var(--accent-plum);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover, a:focus-visible {
  color: var(--accent-plum-deep);
}

/* Header & Navigation: Brand Far Left, Nav Centred Below, Non-Sticky */
.site-header {
  position: static;
  width: 100%;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-plum);
  padding: 1.25rem 1.5rem 0.75rem;
}

.brand-row {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.75rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
}

.brand-mark {
  width: 28px;
  height: 28px;
  background-color: var(--accent-plum);
  border-radius: var(--radius-subtle);
  display: inline-block;
  flex-shrink: 0;
}

.brand-title {
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  color: var(--text-primary);
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.mobile-menu-trigger {
  display: none;
  background: transparent;
  border: 1px solid var(--border-plum);
  color: var(--accent-plum);
  font-size: 1.5rem;
  line-height: 1;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-subtle);
  cursor: pointer;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border-plum);
  padding-top: 0.6rem;
}

.main-nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-subtle);
  transition: all 0.2s var(--ease-kinetic);
}

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

/* Layout Containers */
.wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.reading-flow {
  max-width: 72ch;
  margin: 0 auto;
}

/* Full Hero Section with Dark Overlay */
.hero-viewport {
  position: relative;
  min-height: 75vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #1a0b15;
  color: #fffafa;
  overflow: hidden;
  text-align: center;
  padding: 4rem 1.5rem;
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(28, 9, 23, 0.75) 0%, rgba(28, 9, 23, 0.92) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
  margin: 0 auto;
}

.hero-inner h1 {
  color: #fffafa;
}

.hero-inner p {
  color: #eedde7;
  font-size: 1.15rem;
  max-width: 68ch;
  margin: 0 auto 2rem;
}

/* Page Header for Subpages */
.page-hero {
  padding: 3.5rem 1.5rem 2.5rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-plum);
  position: relative;
}

.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--radial-glow);
  pointer-events: none;
}

.eyebrow {
  font-size: 0.8rem;
  color: var(--accent-plum);
  margin-bottom: 0.5rem;
  display: inline-block;
  background: var(--accent-tint);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-subtle);
}

/* Buttons with 4px hard offset shadow */
.btn {
  display: inline-block;
  background-color: var(--accent-plum);
  color: #fffafa;
  text-decoration: none;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-subtle);
  border: 1px solid var(--accent-plum-deep);
  box-shadow: 4px 4px 0px var(--accent-plum-deep);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  font-size: 0.95rem;
}

.btn:hover, .btn:focus-visible {
  color: #fffafa;
  transform: translate(4px, 4px);
  box-shadow: 0px 0px 0px var(--accent-plum-deep);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--accent-plum);
  border: 1px solid var(--accent-plum);
  box-shadow: 4px 4px 0px var(--accent-plum);
}

.btn-secondary:hover {
  background-color: var(--accent-tint);
  color: var(--accent-plum-deep);
}

/* Panels, Cards & Observation Strips */
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.observation-strip {
  background: var(--bg-surface-alt);
  border-left: 4px solid var(--accent-plum);
  border-top: 1px solid var(--border-plum);
  border-right: 1px solid var(--border-plum);
  border-bottom: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

.observation-strip strong {
  color: var(--accent-plum-deep);
  display: block;
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

/* Sourced Research Panels */
.research-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.card-media {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--border-plum);
}

.card-media-square {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  border-bottom: 1px solid var(--border-plum);
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.card-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.card-body .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* Sections & Methods */
.content-section {
  padding: 4rem 0;
  position: relative;
}

.bg-radial {
  background: var(--radial-glow);
}

.section-intro {
  margin-bottom: 2.5rem;
}

/* Method Tabs Component */
.tab-header {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-plum);
  margin-bottom: 1.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
}

.tab-btn {
  background: transparent;
  border: 1px solid var(--border-plum);
  border-bottom: none;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-subtle) var(--radius-subtle) 0 0;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.85rem;
  white-space: nowrap;
}

.tab-btn.active {
  background: var(--accent-plum);
  color: #fffafa;
  border-color: var(--accent-plum);
}

.tab-panel {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  padding: 1.75rem;
}

.tab-panel.active {
  display: block;
}

/* Accordion */
.accordion-item {
  border: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  margin-bottom: 0.75rem;
  background: var(--bg-surface);
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 1.15rem 1.25rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: system-ui, sans-serif;
}

.accordion-trigger:focus-visible {
  outline: 2px solid var(--accent-plum);
}

.accordion-icon {
  font-size: 1.25rem;
  color: var(--accent-plum);
  transition: transform 0.2s ease;
}

.accordion-content {
  padding: 0 1.25rem 1.25rem;
  display: none;
  border-top: 1px solid var(--border-plum);
  padding-top: 1rem;
}

.accordion-item.open .accordion-content {
  display: block;
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
}

/* Forms & Interactive Workbench */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-size: 0.85rem;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--text-primary);
  letter-spacing: 0.04em;
}

input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--accent-plum);
}

.output-console {
  background: #1c1917;
  color: #eedde7;
  padding: 1rem;
  font-family: monospace;
  font-size: 0.85rem;
  border-radius: var(--radius-subtle);
  min-height: 120px;
  white-space: pre-wrap;
  margin-top: 1rem;
  border: 1px solid var(--accent-plum);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* Table Wrapper for Zero Horizontal Overflow */
.table-scroller {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--border-plum);
  border-radius: var(--radius-subtle);
  background: var(--bg-surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

th, td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-plum);
}

th {
  background: var(--bg-surface-alt);
  color: var(--accent-plum);
  text-transform: uppercase;
  font-size: 0.78rem;
  letter-spacing: 0.05em;
}

/* Footer (Site Uniformity) */
.site-footer {
  margin-top: auto;
  background: var(--bg-surface);
  border-top: 2px solid var(--accent-plum);
  padding: 3rem 1.5rem 2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-nav a {
  text-decoration: none;
  color: var(--text-primary);
}

.footer-nav a:hover {
  color: var(--accent-plum);
  text-decoration: underline;
}

.footer-legal-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-plum);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.82rem;
}

/* Scroll reveal utility */
.reveal-item {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease-kinetic), transform 0.6s var(--ease-kinetic);
}

.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .mobile-menu-trigger {
    display: block;
  }

  .nav-container {
    display: none;
    padding-top: 1rem;
  }

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

  .main-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 0.6rem 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}