/* ==========================================================================
   Battery Cyber — Design System & Engineering Stylesheet
   Direction: Industrial Luxury + Critical Infrastructure + Technical Editorial
   ========================================================================== */

/* ---------- Fonts (Self-Hosted IBM Plex) ---------- */
@font-face {
  font-family: 'Plex Sans';
  src: url('/assets/fonts/IBMPlexSans.woff2') format('woff2-variations');
  font-weight: 100 700;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('/assets/fonts/IBMPlexMono400.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('/assets/fonts/IBMPlexMono.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}

/* ---------- Root Variables & Tokens ---------- */
:root {
  /* Surface & Base Palette: Deep graphite / near-black */
  --bg-canvas: #090b0e;
  --bg-surface: #101318;
  --bg-elevated: #161a22;
  --bg-card: #12161d;
  --bg-card-hover: #171c25;
  --bg-overlay: rgba(9, 11, 14, 0.85);

  /* Borders & Grid Rules */
  --border-subtle: #1c222b;
  --border-default: #252d38;
  --border-strong: #333d4d;
  --border-focus: #10b981;

  /* Typography Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-dim: #475569;
  --text-inverse: #090b0e;

  /* Primary Brand Accent: Restrained Safety/Energy Green */
  --green-400: #34d399;
  --green-500: #10b981;
  --green-600: #059669;
  --green-dim: rgba(16, 185, 129, 0.12);
  --green-dim-strong: rgba(16, 185, 129, 0.22);
  --green-glow: rgba(16, 185, 129, 0.35);

  /* Warning / Operational Severity Accents */
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-dim: rgba(245, 158, 11, 0.14);
  --red-400: #f87171;
  --red-500: #ef4444;
  --red-dim: rgba(239, 68, 68, 0.15);

  /* Typography Stacks */
  --font-sans: 'Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Plex Mono', 'SF Mono', Consolas, Monaco, monospace;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 5rem;
  --space-16: 6.5rem;
  --space-20: 8rem;

  /* Layout Containers */
  --max-w: 1320px;
  --max-w-reading: 72ch;
  --gutter: clamp(1.25rem, 4vw, 3.5rem);

  /* Focus & Elevation */
  --focus-ring: 0 0 0 2px var(--bg-canvas), 0 0 0 4px var(--green-500);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.65);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.85);
}

/* Light Mode Override (if user forces light scheme) */
@media (prefers-color-scheme: light) {
  :root {
    --bg-canvas: #f8fafc;
    --bg-surface: #ffffff;
    --bg-elevated: #f1f5f9;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-overlay: rgba(248, 250, 252, 0.88);

    --border-subtle: #e2e8f0;
    --border-default: #cbd5e1;
    --border-strong: #94a3b8;
    --border-focus: #059669;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-dim: #94a3b8;
    --text-inverse: #ffffff;

    --green-400: #059669;
    --green-500: #047857;
    --green-600: #065f46;
    --green-dim: rgba(4, 120, 87, 0.08);
    --green-dim-strong: rgba(4, 120, 87, 0.16);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
  }
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

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

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-canvas);
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

/* Accessibility Focus Ring */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--green-500);
  color: #000;
  padding: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 1rem;
}

/* ---------- Typography & Utility Styles ---------- */
.mono {
  font-family: var(--font-mono);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green-400);
  margin-bottom: var(--space-3);
}

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

.h1 {
  font-size: clamp(2.25rem, 1.8rem + 2.4vw, 3.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.h2 {
  font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.h3 {
  font-size: clamp(1.25rem, 1.15rem + 0.6vw, 1.5rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.h4 {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
}

.lede {
  font-size: clamp(1.0625rem, 0.98rem + 0.4vw, 1.25rem);
  line-height: 1.6;
  color: var(--text-secondary);
}

.body-text {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.body-text--sm {
  font-size: 0.875rem;
  line-height: 1.6;
}

.text-green { color: var(--green-400); }
.text-amber { color: var(--amber-400); }
.text-red { color: var(--red-400); }
.text-muted { color: var(--text-muted); }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.2rem 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 3px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
}

.badge--green {
  background: var(--green-dim);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--green-400);
}

.badge--amber {
  background: var(--amber-dim);
  border-color: rgba(245, 158, 11, 0.35);
  color: var(--amber-400);
}

.badge--red {
  background: var(--red-dim);
  border-color: rgba(239, 68, 68, 0.35);
  color: var(--red-400);
}

.badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

/* ---------- Layout Containers ---------- */
.wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.wrap--narrow {
  max-width: 960px;
}

.wrap--reading {
  max-width: var(--max-w-reading);
}

.section {
  padding-top: clamp(3.5rem, 7vw, 6.5rem);
  padding-bottom: clamp(3.5rem, 7vw, 6.5rem);
  position: relative;
}

.section--alt {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.section--canvas {
  background-color: var(--bg-canvas);
}

.section-header {
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-header--split {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .section-header--split {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

/* ---------- Header & Enterprise Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-overlay);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
}

.brand-icon {
  width: 32px;
  height: 32px;
}

.brand-name {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 2px;
}

/* Nav Menu */
.desktop-nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

@media (min-width: 992px) {
  .desktop-nav {
    display: flex;
  }
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border-radius: 3px;
  transition: color 0.15s, background-color 0.15s;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--text-primary);
  background-color: var(--bg-elevated);
}

.nav-link[aria-current="page"] {
  color: var(--green-400);
}

/* Mega-Menu Container */
.nav-item-dropdown {
  position: relative;
}

.nav-item-dropdown:hover .mega-menu,
.nav-item-dropdown:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 480px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  box-shadow: var(--shadow-lg);
  padding: 1.25rem;
  border-radius: 4px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
  pointer-events: none;
  z-index: 100;
}

.mega-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.mega-entry {
  display: block;
  padding: 0.625rem 0.75rem;
  border-radius: 3px;
  border: 1px solid transparent;
  transition: background-color 0.15s, border-color 0.15s;
}

.mega-entry:hover {
  background-color: var(--bg-elevated);
  border-color: var(--border-subtle);
}

.mega-entry__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.mega-entry__desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 0.2rem;
}

/* Actions in Header */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 3px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--green-500);
  color: #05160e;
}

.btn--primary:hover {
  background-color: var(--green-400);
  box-shadow: 0 0 16px var(--green-glow);
}

.btn--secondary {
  background-color: var(--bg-elevated);
  border-color: var(--border-default);
  color: var(--text-primary);
}

.btn--secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-strong);
}

.btn--text {
  background: none;
  border: none;
  padding: 0;
  color: var(--green-400);
}

.btn--text:hover {
  text-decoration: underline;
}

/* Mobile Toggle */
.mobile-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
}

@media (min-width: 992px) {
  .mobile-toggle {
    display: none;
  }
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: 4.5rem;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-canvas);
  border-top: 1px solid var(--border-subtle);
  padding: var(--gutter);
  overflow-y: auto;
  z-index: 999;
}

.mobile-drawer[data-open="true"] {
  display: block;
}

.mobile-nav-group {
  margin-bottom: 1.5rem;
}

.mobile-nav-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.mobile-nav-link {
  display: block;
  padding: 0.625rem 0;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav-link--sub {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--text-secondary);
  padding: 0.45rem 0.75rem;
  border-bottom: none;
}

/* ---------- Hero Section ---------- */
.hero {
  padding-top: clamp(3rem, 6vw, 6rem);
  padding-bottom: clamp(3.5rem, 7vw, 6.5rem);
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 50% 0%, var(--green-dim) 0%, transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 4rem);
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
  }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: var(--space-6);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-subtle);
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
}

.hero-meta-num {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

.hero-meta-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Technical Schematic Container */
.schematic-frame {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.schematic-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 1rem;
  background-color: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.schematic-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--green-400);
}

.schematic-content {
  padding: 1.25rem;
}

/* ---------- Interactive Attack Surface Model ---------- */
.attack-surface-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.attack-surface-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
}

.attack-path-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.path-btn {
  padding: 0.375rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.15s;
}

.path-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.path-btn[aria-pressed="true"] {
  background: var(--green-dim-strong);
  border-color: var(--green-500);
  color: var(--green-400);
}

.attack-surface-body {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
  .attack-surface-body {
    grid-template-columns: 1.4fr 0.8fr;
  }
}

.attack-surface-canvas-wrap {
  padding: 1.5rem;
  overflow-x: auto;
  border-bottom: 1px solid var(--border-subtle);
}

@media (min-width: 1024px) {
  .attack-surface-canvas-wrap {
    border-bottom: none;
    border-right: 1px solid var(--border-subtle);
  }
}

.attack-surface-svg {
  width: 100%;
  min-width: 600px;
  height: auto;
}

/* Inspector Panel */
.attack-surface-inspector {
  padding: 1.5rem;
  background: var(--bg-card);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.inspector-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.inspector-title {
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
}

.inspector-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.375rem;
}

.inspector-section {
  margin-bottom: 1.25rem;
}

.inspector-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.inspector-val {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.inspector-impact-box {
  background: var(--red-dim);
  border-left: 3px solid var(--red-500);
  padding: 0.75rem 1rem;
  border-radius: 0 3px 3px 0;
  margin-bottom: 1.25rem;
}

.inspector-defense-box {
  background: var(--green-dim);
  border-left: 3px solid var(--green-500);
  padding: 0.75rem 1rem;
  border-radius: 0 3px 3px 0;
}

/* SVG Interactive Node States */
.topology-node {
  cursor: pointer;
  transition: transform 0.15s ease;
}

.topology-node:hover {
  filter: brightness(1.2);
}

.topology-node[data-active="true"] rect {
  stroke: var(--green-400);
  stroke-width: 2.5px;
}

.topology-link {
  transition: stroke 0.2s, stroke-width 0.2s;
}

.topology-link[data-highlight="true"] {
  stroke: var(--amber-400) !important;
  stroke-width: 2.5px !important;
  stroke-dasharray: 4 2;
  animation: flowLine 1.5s linear infinite;
}

@keyframes flowLine {
  from { stroke-dashoffset: 24; }
  to { stroke-dashoffset: 0; }
}

/* ---------- Grid Systems & Cards ---------- */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* Feature & Architecture Card */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  padding: clamp(1.25rem, 3vw, 2rem);
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
  position: relative;
}

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

.card--green-accent {
  border-top: 3px solid var(--green-500);
}

.card-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--green-400);
  margin-bottom: var(--space-3);
  letter-spacing: 0.05em;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-list {
  list-style: none;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card-list li {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.card-list li::before {
  content: "—";
  font-family: var(--font-mono);
  color: var(--green-400);
}

/* Deliverable / Evidence Block */
.evidence-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

@media (min-width: 768px) {
  .evidence-row {
    grid-template-columns: 240px 1fr 220px;
    align-items: baseline;
  }
}

.evidence-name {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.evidence-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.evidence-format {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
}

/* ---------- Tables ---------- */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-default);
  border-radius: 4px;
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.tech-table th {
  background-color: var(--bg-elevated);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-default);
}

.tech-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

.tech-table tr:hover td {
  background-color: var(--bg-card-hover);
}

/* ---------- Contact / Discuss Environment Form ---------- */
.form-shell {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: 4px;
  padding: clamp(1.5rem, 4vw, 3rem);
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .form-grid--split {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.form-label span {
  color: var(--green-400);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  padding: 0.65rem 0.875rem;
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--green-500);
  outline: none;
  box-shadow: 0 0 0 1px var(--green-500);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.form-feedback {
  margin-top: 1rem;
  padding: 0.875rem 1.25rem;
  border-radius: 3px;
  font-size: 0.875rem;
  display: none;
}

.form-feedback--error {
  display: block;
  background-color: var(--red-dim);
  border: 1px solid var(--red-500);
  color: var(--red-400);
}

.form-feedback--success {
  display: block;
  background-color: var(--green-dim);
  border: 1px solid var(--green-500);
  color: var(--green-400);
}

/* Honeypot hidden */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Research / Article Layout ---------- */
.article-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--space-8);
  margin-bottom: var(--space-8);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.prose {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.prose h2 {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.prose p {
  margin-bottom: 1.35rem;
}

.prose ul, .prose ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose blockquote {
  border-left: 3px solid var(--green-500);
  padding-left: 1.25rem;
  margin: 1.75rem 0;
  color: var(--text-primary);
  font-style: italic;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background-color: var(--bg-elevated);
  padding: 0.15rem 0.4rem;
  border-radius: 2px;
  border: 1px solid var(--border-subtle);
  color: var(--green-400);
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  }
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-links a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--green-400);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}