/* ==========================================================================
   RADIN CONSULTING, INC. - DESIGN SYSTEM & MASTER STYLESHEET
   Modern, Ultra-Responsive, WCAG AA Compliant Architecture
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Reset & Base Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Color Palette */
  --color-primary: #050077;
  --color-primary-hover: #030052;
  --color-primary-light: #0d1282;
  --color-accent: #1d70e2;
  --color-accent-hover: #1558b0;
  --color-accent-subtle: #edf5ff;
  --color-accent-border: #bfdbfe;
  
  /* Neutral & Functional Colors */
  --color-slate-900: #090e1a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  --color-slate-400: #94a3b8;
  --color-slate-300: #cbd5e1;
  --color-slate-200: #e2e8f0;
  --color-slate-100: #f1f5f9;
  --color-slate-50: #f8fafc;
  --color-white: #ffffff;
  
  /* Semantic Tokens */
  --text-main: var(--color-slate-800);
  --text-muted: var(--color-slate-600);
  --text-light: var(--color-white);
  --bg-page: var(--color-white);
  --bg-surface: var(--color-white);
  --bg-surface-alt: var(--color-slate-50);
  --border-light: var(--color-slate-200);
  --border-focus: var(--color-accent);
  --color-success: #059669;
  --color-success-bg: #ecfdf5;
  --color-gold: #b45309;
  --color-gold-bg: #fffbeb;

  /* Typography Scale (Fluid clamp) */
  --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: clamp(1rem, 0.25vw + 0.95rem, 1.125rem);
  --fs-lg: clamp(1.125rem, 0.5vw + 1rem, 1.25rem);
  --fs-xl: clamp(1.25rem, 0.75vw + 1.1rem, 1.5rem);
  --fs-2xl: clamp(1.5rem, 1.25vw + 1.25rem, 1.875rem);
  --fs-3xl: clamp(1.875rem, 2vw + 1.5rem, 2.375rem);
  --fs-4xl: clamp(2.25rem, 3.2vw + 1.75rem, 3.25rem);
  --fs-hero: clamp(2.5rem, 4.5vw + 1.75rem, 4.25rem);

  /* Spacing Scale */
  --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: clamp(3.5rem, 6vw, 6rem);

  /* Elevation Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
  --shadow-header: 0 2px 16px rgba(5, 0, 119, 0.08);

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Layout */
  --container-max-width: 1280px;
  --header-height: 84px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & Layout Integrity (Zero Horizontal Scroll Guarantee)
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

/* Strict requirement: NEVER set overflow to hidden or auto on html or body */
body {
  font-family: var(--font-family-sans);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-page);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip; /* Uses clip so sticky headers remain 100% active */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  flex: 1 0 auto;
  min-width: 0;
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* Accessibility: Visible Focus Rings */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

/* Skip to Main Content Link */
.skip-link {
  position: absolute;
  top: -100px;
  inset-inline-start: 1rem;
  z-index: 9999;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: top var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.skip-link:focus {
  top: 1rem;
}

/* Screen Reader Utility */
.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;
}

/* Container Constraint */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 3.5vw, 2rem);
}

/* --------------------------------------------------------------------------
   3. Header & Sticky Glassmorphism Navigation
   -------------------------------------------------------------------------- */
/* Header MUST stay pinned to top of viewport at every scroll position */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-header);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

/* Logo sits at the start and is the home link */
.brand-home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  text-decoration: none;
  flex-shrink: 0;
  min-height: 48px;
}

.brand-svg-logo {
  height: 46px;
  width: auto;
  max-width: 190px;
  transition: transform var(--transition-fast);
}

.brand-home-link:hover .brand-svg-logo {
  transform: translateY(-1px);
}

/* Desktop Navigation Menu */
.primary-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.5rem 1rem;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-slate-700);
  border-radius: var(--radius-md);
  position: relative;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-slate-100);
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  inset-inline-start: 1rem;
  inset-inline-end: 1rem;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* Header Action / Contact Badge */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-phone-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.5rem 0.875rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-slate-700);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header-phone-link:hover {
  color: var(--color-primary);
  background-color: var(--color-slate-100);
}

.header-phone-link svg {
  width: 18px;
  height: 18px;
  fill: var(--color-accent);
}

.header-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.625rem 1.25rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-primary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}

.header-cta-btn:hover {
  color: var(--color-white);
  background-color: var(--color-accent);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle Button */
.mobile-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--color-slate-800);
  transition: all var(--transition-fast);
}

.mobile-nav-toggle:hover {
  background-color: var(--color-slate-100);
  border-color: var(--color-slate-400);
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 22px;
  height: 16px;
  pointer-events: none;
}

.hamburger-line {
  display: block;
  height: 2px;
  width: 100%;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

/* Hamburger active transformation */
.mobile-nav-toggle[aria-expanded="true"] .line-1 {
  transform: translateY(7px) rotate(45deg);
}

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

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

/* Mobile Navigation Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  inset-inline-start: 0;
  inset-inline-end: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1.5rem;
  overflow-y: auto;
  border-top: 1px solid var(--border-light);
  box-shadow: var(--shadow-xl);
  z-index: 999;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-drawer.is-open {
  display: flex;
  animation: slideDown 0.25s ease-out forwards;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.mobile-drawer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 0.75rem 1rem;
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-slate-800);
  border-radius: var(--radius-md);
  border-bottom: 1px solid var(--color-slate-100);
  transition: all var(--transition-fast);
}

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

.mobile-drawer-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}

.mobile-drawer-contact {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   4. Buttons & Interactive Elements
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.75rem 1.5rem;
  font-size: var(--fs-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  text-align: center;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 4px 12px rgba(5, 0, 119, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(29, 112, 226, 0.25);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.8);
}

.btn-outline-white:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}

.btn-sm {
  min-height: 40px;
  padding: 0.5rem 1rem;
  font-size: var(--fs-sm);
}

/* --------------------------------------------------------------------------
   5. Hero Sections (Modern, Impactful, Content Rich)
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  overflow: hidden;
}

.hero-bg-media {
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  z-index: 1;
}

.hero-gradient-overlay {
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(5, 0, 119, 0.94) 0%, rgba(10, 22, 130, 0.88) 60%, rgba(29, 112, 226, 0.75) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 860px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
}

.badge-cert {
  background: rgba(255, 255, 255, 0.15);
  color: #93c5fd;
  border: 1px solid rgba(147, 197, 253, 0.3);
  backdrop-filter: blur(8px);
  margin-bottom: 1.25rem;
}

.hero-title {
  font-size: var(--fs-hero);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: var(--fs-xl);
  line-height: 1.5;
  color: #e2e8f0;
  margin-bottom: 2rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* Secondary Page Sub-Hero */
.subhero {
  position: relative;
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: clamp(3rem, 6vw, 4.5rem) 0;
  overflow: hidden;
}

.subhero-bg-media {
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  z-index: 1;
}

.subhero-overlay {
  position: absolute;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(5, 0, 119, 0.95) 0%, rgba(13, 27, 70, 0.9) 100%);
  z-index: 2;
}

.subhero-content {
  position: relative;
  z-index: 3;
  max-width: 800px;
}

.subhero-title {
  font-size: var(--fs-3xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.75rem;
}

.subhero-lead {
  font-size: var(--fs-lg);
  color: #cbd5e1;
  line-height: 1.6;
}

.breadcrumb-nav {
  margin-bottom: 1rem;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  color: #94a3b8;
}

.breadcrumb-list a {
  color: #93c5fd;
}

.breadcrumb-list a:hover {
  color: var(--color-white);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: #64748b;
}

/* --------------------------------------------------------------------------
   6. Key Metrics & Value Proposition Bar
   -------------------------------------------------------------------------- */
.metrics-strip {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  padding: 2rem 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.metric-item {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  border-inline-start: 3px solid var(--color-accent);
}

.metric-number {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-slate-600);
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   7. Typography, Sections & Grid Layouts
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-3xl) 0;
}

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

.section-header {
  max-width: 760px;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.section-header.text-center {
  margin-inline: auto;
  text-align: center;
}

.section-pretitle {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: var(--fs-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-muted);
  line-height: 1.65;
}

/* Content Columns & Card Grids */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* --------------------------------------------------------------------------
   8. Key Projects Gallery & Cards (Remediates Audit Findings)
   -------------------------------------------------------------------------- */
.project-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  justify-content: flex-start;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0.5rem 1.25rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  background-color: var(--bg-surface);
  color: var(--color-slate-700);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-primary);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(5, 0, 119, 0.2);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-fast);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent-border);
}

.project-image-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-slate-100);
}

.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-image {
  transform: scale(1.04);
}

.project-card-tag {
  position: absolute;
  top: 1rem;
  inset-inline-start: 1rem;
  background: rgba(5, 0, 119, 0.85);
  color: var(--color-white);
  padding: 0.35rem 0.75rem;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: 1.5rem;
}

.project-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.project-description {
  font-size: var(--fs-base);
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.project-metadata {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  padding: 0.875rem 0;
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 1.25rem;
  font-size: var(--fs-sm);
}

.meta-row {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.meta-label {
  color: var(--color-slate-500);
  font-weight: 500;
}

.meta-value {
  color: var(--color-slate-800);
  font-weight: 600;
  text-align: end;
}

/* Native Accessible Button for Modal Trigger */
.project-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-accent-subtle);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.project-action-btn:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.project-action-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transition: transform var(--transition-fast);
}

.project-action-btn:hover svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   9. Service / Expertise Cards (What We Do)
   -------------------------------------------------------------------------- */
.service-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.service-media-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-slate-100);
}

.service-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.service-card:hover .service-img {
  transform: scale(1.05);
}

.service-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex: 1 0 auto;
}

.service-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-desc {
  font-size: var(--fs-base);
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.service-tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--color-primary);
  background-color: var(--color-accent-subtle);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   10. Executive Leadership Team Cards (About Us)
   -------------------------------------------------------------------------- */
.leadership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.leader-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.leader-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.leader-headshot-box {
  width: 100%;
  aspect-ratio: 1 / 1;
  max-height: 340px;
  overflow: hidden;
  background-color: var(--color-slate-100);
}

.leader-headshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.leader-info {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.leader-name {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
}

.leader-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
  margin-bottom: 1rem;
}

.leader-bio {
  font-size: var(--fs-base);
  color: var(--text-muted);
  line-height: 1.65;
}

/* Certifications Showcase */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.cert-icon {
  width: 28px;
  height: 28px;
  fill: var(--color-accent);
  flex-shrink: 0;
}

.cert-name {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--color-slate-800);
}

/* --------------------------------------------------------------------------
   11. Careers & Job Openings (Careers Page)
   -------------------------------------------------------------------------- */
.job-listings {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

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

.job-header {
  padding: 1.5rem 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--color-slate-50);
  border-bottom: 1px solid var(--border-light);
}

.job-title-group h3 {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.job-meta-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.job-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: var(--fs-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.job-tag-loc {
  background-color: #e0f2fe;
  color: #0369a1;
}

.job-tag-type {
  background-color: #f0fdf4;
  color: #15803d;
}

.job-content {
  padding: 2rem;
}

.job-section-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
}

.job-list {
  list-style: disc;
  padding-inline-start: 1.5rem;
  color: var(--text-muted);
  font-size: var(--fs-base);
  line-height: 1.6;
}

.job-list li {
  margin-bottom: 0.375rem;
}

/* --------------------------------------------------------------------------
   12. Interactive Application & Contact Forms
   -------------------------------------------------------------------------- */
.form-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.form-group-full {
  grid-column: 1 / -1;
}

.form-label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--color-slate-800);
  margin-bottom: 0.5rem;
}

.form-label .required {
  color: #dc2626;
  margin-inline-start: 0.25rem;
}

.form-control {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  font-size: var(--fs-base);
  color: var(--color-slate-800);
  background-color: var(--color-white);
  border: 1px solid var(--color-slate-300);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(29, 112, 226, 0.15);
  outline: none;
}

textarea.form-control {
  min-height: 130px;
  resize: vertical;
}

.form-help {
  font-size: var(--fs-xs);
  color: var(--color-slate-500);
  margin-top: 0.375rem;
}

.form-feedback {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-top: 1.5rem;
  font-size: var(--fs-base);
  font-weight: 500;
}

.form-feedback.is-success {
  display: block;
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #a7f3d0;
}

/* Office Locations Cards (Contact Page) */
.office-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.office-card-title {
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.office-info-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: var(--fs-base);
  color: var(--text-muted);
}

.office-info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.office-info-item svg {
  width: 20px;
  height: 20px;
  fill: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

/* --------------------------------------------------------------------------
   13. Accessible Modal Dialog (Project Details)
   -------------------------------------------------------------------------- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  inset-inline-start: 0;
  width: 100%;
  height: 100%;
  background: rgba(9, 14, 26, 0.75);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.is-active {
  display: flex;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-dialog {
  background-color: var(--bg-surface);
  width: 100%;
  max-width: 760px;
  max-height: 90vh;
  border-radius: var(--radius-xl);
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  position: relative;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.75rem;
  border-bottom: 1px solid var(--border-light);
  background-color: var(--bg-surface-alt);
  position: sticky;
  top: 0;
  z-index: 10;
}

.modal-title {
  font-size: var(--fs-xl);
  font-weight: 800;
  color: var(--color-primary);
}

.modal-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-slate-600);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--color-slate-200);
  color: var(--color-slate-900);
}

.modal-body {
  padding: 1.75rem;
}

.modal-media-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.5rem;
  background-color: var(--color-slate-100);
}

.modal-media-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-text {
  font-size: var(--fs-base);
  line-height: 1.7;
  color: var(--text-main);
  margin-bottom: 1.5rem;
}

.modal-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
  margin-bottom: 1rem;
}

.modal-table th,
.modal-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-light);
  text-align: start;
}

.modal-table th {
  background-color: var(--color-slate-100);
  color: var(--color-primary);
  font-weight: 700;
  width: 32%;
}

/* --------------------------------------------------------------------------
   14. FAQ / AEO Accordion (Addresses Audit Finding)
   -------------------------------------------------------------------------- */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
  margin-inline: auto;
}

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

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

.faq-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 56px;
  padding: 1.25rem 1.5rem;
  font-size: var(--fs-lg);
  font-weight: 700;
  text-align: start;
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-trigger svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-inline-start: 1rem;
}

.faq-trigger[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.faq-panel {
  display: none;
  padding: 0 1.5rem 1.5rem 1.5rem;
  font-size: var(--fs-base);
  color: var(--text-muted);
  line-height: 1.7;
}

.faq-panel.is-expanded {
  display: block;
}

/* --------------------------------------------------------------------------
   15. Global Multi-Column Footer (WCAG Compliant Architecture)
   -------------------------------------------------------------------------- */
footer.site-footer {
  background-color: var(--color-slate-900);
  color: var(--color-slate-300);
  padding: clamp(3.5rem, 6vw, 5rem) 0 2rem 0;
  border-top: 3px solid var(--color-primary);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-logo-svg {
  height: 48px;
  width: auto;
  max-width: 210px;
}

.footer-brand p {
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--color-slate-300);
}

.footer-cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  font-size: var(--fs-xs);
  font-weight: 700;
  color: #93c5fd;
  background: rgba(29, 112, 226, 0.15);
  border: 1px solid rgba(147, 197, 253, 0.3);
  border-radius: var(--radius-sm);
  width: fit-content;
}

.footer-col-title {
  font-size: var(--fs-base);
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-nav-list a {
  color: var(--color-slate-300);
  font-size: var(--fs-sm);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  min-height: 32px;
}

.footer-nav-list a:hover {
  color: var(--color-white);
  transform: translateX(4px);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  font-size: var(--fs-sm);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  fill: var(--color-accent);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.footer-contact-item a {
  color: var(--color-slate-300);
}

.footer-contact-item a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 2rem;
  font-size: var(--fs-sm);
  color: var(--color-slate-400);
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: var(--color-slate-400);
}

.footer-bottom-links a:hover {
  color: var(--color-white);
}

/* --------------------------------------------------------------------------
   16. Back to Top Button (Strict Requirement)
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  inset-inline-end: 24px;
  width: 52px;
  height: 52px;
  min-width: 48px;
  min-height: 48px;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-normal), visibility var(--transition-normal), transform var(--transition-normal), background-color var(--transition-fast);
  z-index: 1000;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

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

/* --------------------------------------------------------------------------
   17. Responsive Media Queries (Mobile-First Breakpoints)
   -------------------------------------------------------------------------- */
/* Small Tablets & Large Phones (max-width: 1024px) */
@media (max-width: 1024px) {
  .primary-nav,
  .header-actions {
    display: none;
  }

  .mobile-nav-toggle {
    display: inline-flex;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

/* Tablets (max-width: 768px) */
@media (max-width: 768px) {
  :root {
    --header-height: 74px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .job-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Compact Mobile (320px - 480px) */
@media (max-width: 480px) {
  .container {
    padding-inline: 1rem;
  }

  .brand-svg-logo {
    height: 38px;
    max-width: 150px;
  }

  .project-metadata {
    font-size: var(--fs-xs);
  }

  .meta-row {
    flex-direction: column;
    gap: 0.125rem;
  }

  .meta-value {
    text-align: start;
  }
}

/* Print Styles */
@media print {
  header.site-header,
  .back-to-top,
  .mobile-nav-toggle,
  .filter-btn,
  .btn {
    display: none !important;
  }

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