/* ==========================================================================
   AV General Construction - Modern Production Stylesheet
   Architecture: Mobile-First, Modular CSS Custom Properties, WCAG AA Compliant
   Art Direction: Trades Variant A (Bold and Dependable)
   Fonts: Archivo (Display) + Public Sans (Body)
   Palette: Brand Red (#df0008), London Ironwork (#12151a), Drafting White (#ffffff)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Root Variables
   -------------------------------------------------------------------------- */
:root {
  /* Exact Design Brief Palette */
  --bg: #f8f9fa;
  --surface: #ffffff;
  --text: #111827;
  --muted: #525960;
  --primary: #df0008;
  --primary-text: #ffffff;
  --accent: #b45309;
  --dark: #12151a;
  --dark-text: #f8f9fa;

  /* Derived Tonal Variations (Strictly within hue) */
  --primary-hover: #b80007;
  --primary-active: #940005;
  --primary-subtle: rgba(223, 0, 8, 0.08);
  --primary-ring: rgba(223, 0, 8, 0.35);

  --accent-hover: #92400e;
  --accent-subtle: rgba(180, 83, 9, 0.1);

  --dark-surface: #1a1e24;
  --dark-border: #282f38;
  --dark-muted: #9aa1a9;

  --border-light: #e5e7eb;
  --border-medium: #d1d5db;
  --border-dark: #111827;

  /* Typography Scales */
  --font-display: 'Archivo', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --font-size-sm: clamp(0.875rem, 0.825rem + 0.25vw, 0.9375rem);
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --font-size-md: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
  --font-size-lg: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --font-size-xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
  --font-size-2xl: clamp(1.875rem, 1.6rem + 1.2vw, 2.375rem);
  --font-size-3xl: clamp(2.25rem, 1.9rem + 1.75vw, 3.125rem);
  --font-size-hero: clamp(2.5rem, 2rem + 2.5vw, 4rem);

  --line-height-tight: 1.15;
  --line-height-snug: 1.3;
  --line-height-base: 1.6;
  --line-height-relaxed: 1.75;

  /* Spacing System */
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  /* Layout Widths */
  --container-max: 1240px;
  --container-narrow: 900px;
  --header-height: 76px;
  --mobile-bar-height: 64px;

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(17, 24, 39, 0.08), 0 2px 4px -2px rgba(17, 24, 39, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(17, 24, 39, 0.1), 0 4px 6px -4px rgba(17, 24, 39, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(17, 24, 39, 0.12), 0 8px 10px -6px rgba(17, 24, 39, 0.06);

  /* Borders & Radii - Architectural, Solid, Crisp */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text);
  background-color: var(--bg);
  line-height: var(--line-height-base);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  overflow-x: clip; /* Clean clip without breaking sticky positioning */
}

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

/* Accessible Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-md);
  z-index: 9999;
  background: var(--primary);
  color: var(--primary-text);
  padding: var(--space-sm) var(--space-lg);
  font-weight: 700;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
  outline: 3px solid var(--text);
  outline-offset: 3px;
}

/* Accessible Focus States */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}

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

a {
  color: inherit;
  text-decoration-skip-ink: auto;
}

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

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

ul,
ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   3. Typography Utilities
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: var(--line-height-tight);
  color: var(--text);
  letter-spacing: -0.02em;
}

.heading-hero {
  font-size: var(--font-size-hero);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.heading-section {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-md);
}

.heading-card {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: var(--line-height-snug);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.eyebrow::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 2px;
  background-color: var(--primary);
}

.lead-text {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--muted);
}

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

/* --------------------------------------------------------------------------
   4. Layout Containers
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-xl);
  }
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.section-padding {
  padding-block: var(--space-3xl);
}

@media (min-width: 1024px) {
  .section-padding {
    padding-block: var(--space-4xl);
  }
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-header.text-center {
  text-align: center;
  max-width: 780px;
  margin-inline: auto;
}

.section-header.text-center .eyebrow::before {
  display: none;
}

/* Structural Grids */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
}

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

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

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

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

@media (min-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }
}

/* --------------------------------------------------------------------------
   5. Buttons & Badges (Variant A: Bold, Solid, Chunky)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.875rem 1.75rem;
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
  min-height: 48px;
  min-width: 48px;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(223, 0, 8, 0.28);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(223, 0, 8, 0.38);
}

.btn-primary:active {
  transform: translateY(0);
  background-color: var(--primary-active);
}

.btn-secondary {
  background-color: var(--surface);
  color: var(--text);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  border-color: var(--border-dark);
  background-color: var(--bg);
  transform: translateY(-2px);
}

.btn-dark {
  background-color: var(--dark);
  color: var(--dark-text);
  border-color: var(--dark);
}

.btn-dark:hover {
  background-color: #232932;
  border-color: #232932;
  transform: translateY(-2px);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover {
  border-color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-xs);
  min-height: 38px;
}

.btn-lg {
  padding: 1.125rem 2.25rem;
  font-size: var(--font-size-base);
  min-height: 54px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: var(--space-2xs) var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-xs);
  background-color: var(--bg);
  color: var(--text);
  border: 1px solid var(--border-light);
}

.badge-primary {
  background-color: var(--primary-subtle);
  color: var(--primary);
  border-color: rgba(223, 0, 8, 0.2);
}

.badge-accent {
  background-color: var(--accent-subtle);
  color: var(--accent);
  border-color: rgba(180, 83, 9, 0.2);
}

/* --------------------------------------------------------------------------
   6. Header & Navigation (Sticky, Accessible, No-Home-Item Rule)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-md);
}

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

.brand-emblem {
  width: 44px;
  height: 44px;
  background-color: var(--dark);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--surface);
  position: relative;
  overflow: hidden;
  border-left: 4px solid var(--primary);
}

.brand-emblem svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* Desktop Navigation (No Home link as required by rule) */
.desktop-nav {
  display: none;
}

@media (min-width: 992px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
  }
}

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

.nav-link {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary);
}

.nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--primary);
}

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

.header-phone-link {
  display: none;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

@media (min-width: 640px) {
  .header-phone-link {
    display: flex;
  }
}

.header-phone-link:hover {
  background-color: var(--bg);
  color: var(--primary);
}

.header-phone-link svg {
  color: var(--primary);
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  background: var(--surface);
  color: var(--text);
}

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

.hamburger-box {
  width: 22px;
  height: 16px;
  position: relative;
  display: inline-block;
}

.hamburger-line {
  position: absolute;
  width: 100%;
  height: 2px;
  background-color: var(--text);
  left: 0;
  transition: transform var(--transition-normal), top var(--transition-normal), opacity var(--transition-normal);
}

.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 7px; }
.hamburger-line:nth-child(3) { top: 14px; }

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  top: 7px;
  transform: rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  top: 7px;
  transform: rotate(-45deg);
}

/* Mobile Drawer (No Home link, full accessibility) */
.mobile-drawer {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--surface);
  z-index: 999;
  display: flex;
  flex-direction: column;
  padding: var(--space-xl) var(--space-md) calc(var(--mobile-bar-height) + var(--space-xl));
  overflow-y: auto;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
  border-bottom: 2px solid var(--border-dark);
}

.mobile-drawer.open {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  padding: var(--space-sm) var(--space-xs);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--primary);
}

.mobile-nav-link svg {
  width: 18px;
  height: 18px;
}

.mobile-drawer-contact {
  margin-top: auto;
  padding-top: var(--space-lg);
  border-top: 2px solid var(--border-light);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* --------------------------------------------------------------------------
   7. Hero Section (Typographic & Commercial Authority)
   -------------------------------------------------------------------------- */
.hero-section {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-light);
  position: relative;
  overflow: clip;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  padding-block: var(--space-2xl) var(--space-3xl);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    padding-block: var(--space-3xl) var(--space-4xl);
  }
}

.hero-proof-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--dark);
  color: var(--dark-text);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
}

.hero-proof-stars {
  color: #f59e0b;
  font-size: 0.85rem;
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: var(--space-lg);
}

.hero-title span.accent-line {
  color: var(--primary);
}

.hero-subtitle {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  color: var(--muted);
  margin-bottom: var(--space-xl);
  max-width: 640px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero-data-card {
  background: var(--dark);
  color: var(--dark-text);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-xl);
  border-top: 4px solid var(--primary);
  position: relative;
}

.hero-card-header {
  border-bottom: 1px solid var(--dark-border);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hero-card-header h3 {
  color: #ffffff;
  font-size: var(--font-size-md);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.hero-specs-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.hero-spec-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.hero-spec-icon {
  width: 36px;
  height: 36px;
  background-color: rgba(223, 0, 8, 0.15);
  color: var(--primary);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-spec-icon svg {
  width: 20px;
  height: 20px;
}

.hero-spec-content h4 {
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: 2px;
}

.hero-spec-content p {
  color: var(--dark-muted);
  font-size: var(--font-size-xs);
  line-height: 1.45;
}

.hero-card-footer {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--dark-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--dark-muted);
}

.hero-card-footer strong {
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   8. Section 1: Trust Strip (Credentials & Commercial Standards)
   -------------------------------------------------------------------------- */
.trust-strip-section {
  background-color: var(--dark);
  color: var(--dark-text);
  padding-block: var(--space-xl);
  border-bottom: 1px solid var(--dark-border);
}

.trust-strip-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  align-items: center;
}

@media (min-width: 768px) {
  .trust-strip-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-xs);
  border-inline-start: 3px solid var(--primary);
  background-color: rgba(255, 255, 255, 0.03);
}

.trust-badge-icon {
  width: 32px;
  height: 32px;
  color: var(--primary);
  flex-shrink: 0;
}

.trust-badge-text {
  display: flex;
  flex-direction: column;
}

.trust-badge-title {
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
}

.trust-badge-desc {
  font-size: var(--font-size-xs);
  color: var(--dark-muted);
}

/* --------------------------------------------------------------------------
   9. Section 2: Core Disciplines (The AV Standard)
   -------------------------------------------------------------------------- */
.disciplines-section {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-light);
}

.discipline-card {
  background-color: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.discipline-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-medium);
}

.discipline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.discipline-num {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--primary);
  opacity: 0.85;
}

.discipline-badge {
  font-size: var(--font-size-xs);
  font-weight: 700;
  background-color: rgba(17, 24, 39, 0.06);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-xs);
  color: var(--text);
}

.discipline-card h3 {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-sm);
  color: var(--text);
}

.discipline-block {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-light);
  font-size: var(--font-size-sm);
}

.discipline-block strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
  margin-bottom: 4px;
}

.discipline-block.problem strong {
  color: var(--primary);
}

.discipline-block.value strong {
  color: var(--accent);
}

.discipline-block p {
  color: var(--muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   10. Section 3: Independence Model & Comparison Table
   -------------------------------------------------------------------------- */
.independence-section {
  background-color: var(--bg);
  border-bottom: 1px solid var(--border-light);
}

.table-responsive-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  background: var(--surface);
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: var(--font-size-sm);
  min-width: 680px;
}

.comparison-table th,
.comparison-table td {
  padding: 1.125rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: top;
}

.comparison-table th {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
  background-color: #f1f3f5;
  color: var(--text);
}

.comparison-table th.col-highlight {
  background-color: var(--primary);
  color: var(--primary-text);
  border-inline: 1px solid var(--primary-hover);
}

.comparison-table td.col-highlight {
  background-color: rgba(223, 0, 8, 0.03);
  border-inline: 2px solid rgba(223, 0, 8, 0.2);
  font-weight: 600;
  color: var(--text);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.table-feature-title {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--text);
  display: block;
}

.table-feature-desc {
  font-size: var(--font-size-xs);
  color: var(--muted);
  margin-top: 2px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.status-pill.success {
  background-color: #ecfdf5;
  color: #065f46;
}

.status-pill.warning {
  background-color: #fffbeb;
  color: #92400e;
}

.status-pill.danger {
  background-color: #fef2f2;
  color: #991b1b;
}

/* --------------------------------------------------------------------------
   11. Section 4: Areas of Residential Expertise
   -------------------------------------------------------------------------- */
.expertise-section {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-light);
}

.expertise-card {
  background-color: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.expertise-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--dark);
  transition: background-color var(--transition-fast);
}

.expertise-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-medium);
}

.expertise-card:hover::before {
  background-color: var(--primary);
}

.expertise-icon-box {
  width: 48px;
  height: 48px;
  background-color: var(--bg);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: var(--space-md);
}

.expertise-icon-box svg {
  width: 24px;
  height: 24px;
}

.expertise-card h3 {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.expertise-card p {
  color: var(--muted);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.expertise-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   12. Section 5: Signature Feature - Interactive Coverage Explorer
   -------------------------------------------------------------------------- */
.signature-section {
  background-color: var(--dark);
  color: var(--dark-text);
  border-bottom: 1px solid var(--dark-border);
  position: relative;
}

.signature-section .section-header .eyebrow {
  color: #ffffff;
}

.signature-section .section-header .heading-section {
  color: #ffffff;
}

.signature-section .section-header .lead-text {
  color: var(--dark-muted);
}

.coverage-explorer-container {
  background-color: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-xl);
}

@media (min-width: 768px) {
  .coverage-explorer-container {
    padding: var(--space-2xl);
  }
}

.explorer-search-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
  .explorer-search-bar {
    flex-direction: row;
    align-items: center;
    max-width: 500px;
  }
}

.search-input-wrapper {
  position: relative;
  flex: 1;
}

.search-input-wrapper svg {
  position: absolute;
  left: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--dark-muted);
}

.explorer-input {
  width: 100%;
  background-color: #12151a;
  border: 1px solid var(--dark-border);
  color: #ffffff;
  padding: 0.75rem var(--space-md) 0.75rem 2.5rem;
  border-radius: var(--radius-xs);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-fast);
}

.explorer-input:focus {
  border-color: var(--primary);
  outline: none;
}

/* Chips cloud */
.chips-cloud-label {
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dark-muted);
  margin-bottom: var(--space-sm);
}

.chips-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-2xl);
}

.coverage-chip {
  padding: 0.6rem 1rem;
  border-radius: var(--radius-xs);
  background-color: #12151a;
  color: var(--dark-text);
  border: 1px solid var(--dark-border);
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.coverage-chip:hover {
  border-color: var(--primary);
  background-color: rgba(223, 0, 8, 0.1);
  color: #ffffff;
}

.coverage-chip.active {
  background-color: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
  box-shadow: 0 4px 12px rgba(223, 0, 8, 0.35);
}

.coverage-chip .postcode-tag {
  font-size: 0.7rem;
  opacity: 0.75;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Compliance detail dashboard */
.compliance-dashboard {
  background-color: #12151a;
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-sm);
  padding: var(--space-xl);
  border-top: 3px solid var(--primary);
}

.dashboard-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--dark-border);
}

.dashboard-area-title {
  font-size: var(--font-size-xl);
  color: #ffffff;
}

.dashboard-area-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(180, 83, 9, 0.2);
  color: #f59e0b;
  border: 1px solid rgba(180, 83, 9, 0.4);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
}

.compliance-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .compliance-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .compliance-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.compliance-card {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-xs);
  padding: var(--space-md);
}

.compliance-card-title {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  margin-bottom: var(--space-xs);
}

.compliance-card-title svg {
  width: 16px;
  height: 16px;
}

.compliance-card h4 {
  font-size: var(--font-size-sm);
  color: #ffffff;
  margin-bottom: var(--space-xs);
}

.compliance-card p {
  font-size: var(--font-size-xs);
  color: var(--dark-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   13. Section 6: Testimonials & Verified Track Record
   -------------------------------------------------------------------------- */
.testimonials-section {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border-light);
}

.testimonial-card-featured {
  background-color: var(--bg);
  border: 2px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  position: relative;
  box-shadow: var(--shadow-md);
}

.quote-icon {
  width: 48px;
  height: 48px;
  color: var(--primary);
  opacity: 0.2;
  margin-bottom: var(--space-md);
}

.testimonial-quote {
  font-family: var(--font-body);
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--text);
  font-style: italic;
  margin-bottom: var(--space-xl);
}

.testimonial-author-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-medium);
}

.author-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.author-avatar {
  width: 48px;
  height: 48px;
  background-color: var(--dark);
  color: #ffffff;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
}

.author-info h4 {
  font-size: var(--font-size-base);
  margin-bottom: 2px;
}

.author-info p {
  font-size: var(--font-size-xs);
  color: var(--muted);
}

.review-badge-google {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: #ffffff;
  border: 1px solid var(--border-medium);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-xs);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--text);
}

.review-badge-google svg {
  width: 16px;
  height: 16px;
}

/* --------------------------------------------------------------------------
   14. Section 7: FAQ (Accordion with Accessible State)
   -------------------------------------------------------------------------- */
.faq-section {
  background-color: var(--bg);
  border-bottom: 1px solid var(--border-light);
}

.faq-container {
  max-width: 860px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.faq-item {
  background-color: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-medium);
}

.faq-item.open {
  border-color: var(--border-dark);
  box-shadow: var(--shadow-sm);
}

.faq-button {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  text-align: left;
  background: none;
  border: none;
  color: var(--text);
  font-family: var(--font-display);
  font-size: var(--font-size-md);
  font-weight: 700;
  gap: var(--space-md);
  transition: color var(--transition-fast);
}

.faq-button:hover {
  color: var(--primary);
}

.faq-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--primary);
  transition: transform var(--transition-normal);
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-panel {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  display: none;
}

.faq-item.open .faq-panel {
  display: block;
}

.faq-panel p + p {
  margin-top: var(--space-sm);
}

.faq-highlight-lead {
  font-weight: 600;
  color: var(--text);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
}

/* --------------------------------------------------------------------------
   15. Section 8: Consultation & Feasibility Contact Form
   -------------------------------------------------------------------------- */
.contact-section {
  background-color: var(--surface);
  position: relative;
}

.contact-layout-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 1024px) {
  .contact-layout-grid {
    grid-template-columns: 1fr 1.15fr;
    gap: var(--space-3xl);
  }
}

.contact-meta-card {
  background-color: var(--dark);
  color: var(--dark-text);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  border-top: 4px solid var(--primary);
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(223, 0, 8, 0.15);
  color: var(--primary);
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-icon svg {
  width: 20px;
  height: 20px;
}

.contact-info-text h4 {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--dark-muted);
  margin-bottom: 2px;
}

.contact-info-text p,
.contact-info-text a {
  font-size: var(--font-size-base);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
}

.contact-info-text a:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* Form Styles */
.feasibility-form-card {
  background-color: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

@media (min-width: 640px) {
  .feasibility-form-card {
    padding: var(--space-2xl);
  }
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  margin-bottom: var(--space-md);
}

.form-label {
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem var(--space-md);
  background-color: var(--surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xs);
  font-size: var(--font-size-sm);
  color: var(--text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
  outline: none;
}

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

.form-note {
  font-size: var(--font-size-xs);
  color: var(--muted);
  line-height: 1.4;
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   16. Map Embed Section
   -------------------------------------------------------------------------- */
.map-embed-wrapper {
  width: 100%;
  height: 380px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: var(--space-xl);
}

.map-embed-frame {
  width: 100%;
  height: 100%;
  border: 0;
}

/* --------------------------------------------------------------------------
   17. Footer (Multi-Column, Comprehensive, Architectural Tone)
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--dark);
  color: var(--dark-text);
  border-top: 4px solid var(--primary);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

@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 1.25fr;
    gap: var(--space-xl);
  }
}

.footer-brand h3 {
  color: #ffffff;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xs);
}

.footer-brand p {
  color: var(--dark-muted);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #ffffff;
  margin-bottom: var(--space-md);
  position: relative;
  padding-bottom: var(--space-xs);
}

.footer-col-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--primary);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--dark-muted);
  text-decoration: none;
  transition: color var(--transition-fast), padding var(--transition-fast);
}

.footer-link:hover {
  color: #ffffff;
  padding-left: 4px;
}

.footer-bottom-bar {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--dark-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--dark-muted);
}

@media (min-width: 768px) {
  .footer-bottom-bar {
    flex-direction: row;
  }
}

.footer-legal-links {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-legal-links a {
  color: var(--dark-muted);
  text-decoration: none;
}

.footer-legal-links a:hover {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   18. Back to Top Button & Mobile Sticky Bottom Bar
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: calc(var(--mobile-bar-height) + 16px);
  right: var(--space-md);
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--dark);
  color: #ffffff;
  border: 1px solid var(--dark-border);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
}

@media (min-width: 768px) {
  .back-to-top {
    bottom: var(--space-xl);
    right: var(--space-xl);
  }
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* Mobile Sticky Bottom CTA Bar (Trades Playbook Variant A Requirement) */
.mobile-sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-bar-height);
  background-color: var(--surface);
  border-top: 1px solid var(--border-medium);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
  z-index: 950;
  display: flex;
  align-items: center;
  padding-inline: var(--space-xs);
  gap: var(--space-xs);
}

@media (min-width: 768px) {
  .mobile-sticky-bar {
    display: none;
  }
}

.mobile-bar-btn {
  flex: 1;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2xs);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: var(--radius-xs);
}

.mobile-bar-btn.call-btn {
  background-color: var(--primary);
  color: var(--primary-text);
}

.mobile-bar-btn.whatsapp-btn {
  background-color: #25d366;
  color: #ffffff;
}

.mobile-bar-btn svg {
  width: 18px;
  height: 18px;
}

/* Padding compensation for mobile sticky bar */
body {
  padding-bottom: var(--mobile-bar-height);
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }
}

/* --------------------------------------------------------------------------
   19. Subpage Specific Styles (About, Services, Advice)
   -------------------------------------------------------------------------- */
.subpage-hero {
  background-color: var(--dark);
  color: var(--dark-text);
  padding-block: var(--space-3xl);
  border-bottom: 1px solid var(--dark-border);
  position: relative;
}

.subpage-hero .eyebrow {
  color: #ffffff;
}

.subpage-hero .eyebrow::before {
  background-color: var(--primary);
}

.subpage-hero h1 {
  color: #ffffff;
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.subpage-hero p {
  color: var(--dark-muted);
  font-size: var(--font-size-md);
  max-width: 720px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--dark-muted);
  margin-bottom: var(--space-md);
}

.breadcrumbs a {
  color: var(--dark-muted);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: #ffffff;
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.article-card {
  background-color: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-medium);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--muted);
  margin-bottom: var(--space-sm);
}

.article-card h2,
.article-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
  line-height: var(--line-height-snug);
}

.article-card p {
  color: var(--muted);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}

.article-read-link {
  margin-top: auto;
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

.article-read-link:hover {
  text-decoration: underline;
}

/* Article Reader Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(18, 21, 26, 0.75);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--surface);
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  overflow-y: auto;
  padding: var(--space-xl);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

.modal-overlay.open .modal-content {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  background-color: var(--bg);
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  cursor: pointer;
}

.modal-close-btn:hover {
  background-color: var(--primary);
  color: var(--primary-text);
}

/* --------------------------------------------------------------------------
   20. Motion & Reduced Motion Preferences
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  }

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

@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;
  }
}