/* ==========================================================================
   AI PINNACLE — MODERN ENTERPRISE DESIGN SYSTEM & STYLESHEET
   Production-Grade, Ultra-Responsive, Zero-Bloat CSS
   WCAG 2.2 AA/AAA Compliant • Mobile-First • Modern CSS Architecture
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Root Custom Properties
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette — Dark Mode Default (Brand Identity) */
  --bg-canvas: #070a11;
  --bg-surface: #0e1422;
  --bg-surface-elevated: #141d30;
  --bg-surface-glass: rgba(14, 20, 34, 0.75);
  --bg-surface-glass-border: rgba(255, 255, 255, 0.08);

  /* Primary Brand Accents */
  --color-cyan-300: #67e8f9;
  --color-cyan-400: #22d3ee;
  --color-cyan-500: #06b6d4;
  --color-cyan-glow: rgba(6, 182, 212, 0.25);

  --color-indigo-400: #818cf8;
  --color-indigo-500: #6366f1;
  --color-indigo-glow: rgba(99, 102, 241, 0.25);

  --color-emerald-400: #34d399;
  --color-emerald-500: #10b981;
  --color-emerald-glow: rgba(16, 185, 129, 0.2);

  --color-amber-400: #fbbf24;

  /* Typography & High-Contrast Colors (WCAG AA/AAA Audited) */
  --text-primary: #f8fafc;        /* Ratio on #070a11: 17.5:1 (AAA) */
  --text-secondary: #cbd5e1;      /* Ratio on #070a11: 11.2:1 (AAA) */
  --text-muted: #94a3b8;          /* Ratio on #070a11: 6.2:1 (AA, passes 4.5:1) */
  --text-inverse: #070a11;

  /* Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-accent: rgba(34, 211, 238, 0.35);

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, var(--color-cyan-400) 0%, var(--color-indigo-400) 50%, var(--color-emerald-400) 100%);
  --gradient-card-glow: radial-gradient(circle at 50% 0%, rgba(34, 211, 238, 0.15) 0%, transparent 70%);

  /* Spacing & Layout */
  --container-max-width: 1280px;
  --header-height: 72px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-cyan-glow: 0 0 32px var(--color-cyan-glow);

  /* Typography Stack */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* 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(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
html[data-theme="light"] {
  --bg-canvas: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-glass: rgba(255, 255, 255, 0.85);
  --bg-surface-glass-border: rgba(0, 0, 0, 0.08);

  --text-primary: #0f172a;        /* Ratio on #f8fafc: 16.5:1 (AAA) */
  --text-secondary: #334155;      /* Ratio on #f8fafc: 9.8:1 (AAA) */
  --text-muted: #64748b;          /* Ratio on #f8fafc: 4.9:1 (AA) */
  --text-inverse: #ffffff;

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-medium: rgba(0, 0, 0, 0.16);
  --border-accent: rgba(6, 182, 212, 0.4);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --shadow-cyan-glow: 0 0 24px rgba(6, 182, 212, 0.15);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Accessibility: Skip-to-content bypass link (WCAG 2.1 SC 2.4.1) */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-cyan-400);
  color: #070a11;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  z-index: 99999;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}

.skip-to-content:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

/* Accessible Focus Visible Rings (UI-02 Fix) */
:focus-visible {
  outline: 2px solid var(--color-cyan-400);
  outline-offset: 3px;
}

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

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

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

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

ul, ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   3. Fluid Typography & Heading Hierarchy (UI-01 Fix)
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.25rem, 5vw + 1rem, 4.25rem);
}

h2 {
  font-size: clamp(1.75rem, 3.5vw + 0.5rem, 2.75rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw + 0.25rem, 1.75rem);
}

h4 {
  font-size: clamp(1.1rem, 1.5vw + 0.2rem, 1.35rem);
}

p {
  color: var(--text-secondary);
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --------------------------------------------------------------------------
   4. Layout Utilities & Container
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan-400);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: clamp(1rem, 1.2vw + 0.5rem, 1.2rem);
  color: var(--text-muted);
  margin-top: 1rem;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   5. Buttons & Interactive Controls (Ergonomic 48px Touch Targets)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;              /* WCAG 2.2 AA Target Size minimum */
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-cyan-400);
  color: #070a11;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
}

.btn-primary:hover {
  background: var(--color-cyan-300);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-cyan-400);
  transform: translateY(-2px);
}

.btn-sm {
  min-height: 40px;
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
}

.tech-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   6. Glassmorphism Cards & Elevations
   -------------------------------------------------------------------------- */
.glass-card {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card-glow);
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-cyan-glow), var(--shadow-md);
}

.glass-card:hover::before {
  opacity: 1;
}

/* --------------------------------------------------------------------------
   7. Navigation & Header
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(7, 10, 17, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

html[data-theme="light"] .site-header {
  background: rgba(248, 250, 252, 0.85);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-logo {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

html[data-theme="light"] .brand-logo {
  filter: invert(1);
}

.desktop-nav {
  display: none;
}

@media (min-width: 960px) {
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: 0.5rem 0.25rem;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-cyan-400);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-cyan-400);
  border-radius: var(--radius-full);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Control Buttons (Theme, Lang, Mobile Hamburger) */
.icon-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--color-cyan-400);
  color: var(--color-cyan-400);
}

.menu-toggle {
  display: inline-flex;
}

@media (min-width: 960px) {
  .menu-toggle {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   8. Mobile Navigation Drawer (A11Y Audited: Focus Trapping & ARIA)
   -------------------------------------------------------------------------- */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1010;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-nav-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 380px);
  background: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  z-index: 1020;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  overflow-y: auto;
}

.mobile-nav-drawer.active {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-link {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0;
}

.mobile-nav-link:hover {
  color: var(--color-cyan-400);
}

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

/* --------------------------------------------------------------------------
   9. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: calc(var(--header-height) + clamp(2.5rem, 5vw, 4.5rem));
  padding-bottom: clamp(3rem, 6vw, 5.5rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: 20%;
  left: 20%;
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.18) 0%, transparent 70%);
  border-radius: var(--radius-full);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-glow-2 {
  position: absolute;
  bottom: 20%;
  right: 15%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.16) 0%, transparent 70%);
  border-radius: var(--radius-full);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin-inline: auto;
}

.hero-lead {
  font-size: clamp(1.05rem, 1.2vw + 0.6rem, 1.35rem);
  color: var(--text-secondary);
  max-width: 720px;
  margin-inline: auto;
  margin-block: 1.5rem 2.25rem;
  line-height: 1.6;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

/* NASTP Sub-banner */
.nastp-trust-banner {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.05);
  border: 1px solid rgba(6, 182, 212, 0.2);
  max-width: 820px;
  margin-inline: auto;
  text-align: left;
}

.nastp-trust-icon {
  flex-shrink: 0;
  color: var(--color-cyan-400);
}

.nastp-trust-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.nastp-trust-text strong {
  color: var(--color-cyan-300);
}

/* Metrics Credibility Bar */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
}

@media (min-width: 768px) {
  .metrics-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.metric-value {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.metric-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* Global Flags Bar */
.global-flags-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 2rem;
}

.flag-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   10. Interactive Tech Ticker / Logo Marquee (UI-03 & A11Y-07 Fix)
   -------------------------------------------------------------------------- */
.ticker-section {
  padding-block: 2rem;
  background: rgba(14, 20, 34, 0.5);
  border-block: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.ticker-controls-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.ticker-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.ticker-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.ticker-toggle-btn:hover {
  color: var(--text-primary);
  border-color: var(--color-cyan-400);
}

.ticker-track-container {
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  width: 100%;
}

.ticker-track {
  display: flex;
  gap: 2rem;
  width: max-content;
  animation: tickerScroll 30s linear infinite;
}

.ticker-track.paused,
.ticker-track:hover,
.ticker-track:focus-within {
  animation-play-state: paused;
}

@keyframes tickerScroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* prefers-reduced-motion override (A11Y-07) */
@media (prefers-reduced-motion: reduce) {
  .ticker-track {
    animation: none !important;
  }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.ticker-item-icon {
  font-size: 1.15rem;
}

/* --------------------------------------------------------------------------
   11. Core Services / Engineering Pillars (Adaptive 3-Col Grid)
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.service-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  background: rgba(6, 182, 212, 0.12);
  color: var(--color-cyan-400);
}

.service-card:nth-child(2) .service-icon-wrapper {
  background: rgba(99, 102, 241, 0.12);
  color: var(--color-indigo-400);
}

.service-card:nth-child(3) .service-icon-wrapper {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-emerald-400);
}

.service-card-title {
  margin-bottom: 0.75rem;
}

.service-card-desc {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.service-card-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-cyan-400);
  transition: gap var(--transition-fast);
}

.card-link:hover {
  gap: 0.6rem;
  color: var(--color-cyan-300);
}

/* --------------------------------------------------------------------------
   12. Spotlight Flagship Projects
   -------------------------------------------------------------------------- */
.spotlight-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 960px) {
  .spotlight-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.spotlight-card {
  display: flex;
  flex-direction: column;
  border-color: rgba(6, 182, 212, 0.25);
}

.spotlight-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.spotlight-logo-box {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
}

.spotlight-logo {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.spotlight-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.15);
  color: var(--color-cyan-300);
}

.spotlight-tag.indigo {
  background: rgba(99, 102, 241, 0.15);
  color: var(--color-indigo-400);
}

.spotlight-headline {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-cyan-400);
  margin-bottom: 0.75rem;
}

.spotlight-headline.indigo {
  color: var(--color-indigo-400);
}

.spotlight-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-block: 1.5rem;
}

.spotlight-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.spotlight-feature-icon {
  flex-shrink: 0;
  margin-top: 0.2rem;
  color: var(--color-cyan-400);
}

/* --------------------------------------------------------------------------
   13. Proven Results: Case Studies Carousel (A11Y-01 & A11Y-02 Fix)
   -------------------------------------------------------------------------- */
.carousel-container {
  position: relative;
  overflow: hidden;
}

.carousel-viewport {
  overflow: hidden;
  width: 100%;
}

.carousel-track {
  display: flex;
  transition: transform var(--transition-slow);
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 0;
  padding-inline: 0.5rem;
}

@media (min-width: 768px) {
  .carousel-slide {
    flex: 0 0 50%;
  }
}

@media (min-width: 1100px) {
  .carousel-slide {
    flex: 0 0 33.333%;
  }
}

.case-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.case-card-image-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1.25rem;
  background: #000000;
  border: 1px solid var(--border-subtle);
}

.case-card-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-metric {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-cyan-400);
  margin-bottom: 0.5rem;
}

.case-pdf-link {
  margin-top: auto;
  padding-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-style: italic;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.case-pdf-link:hover {
  color: var(--color-cyan-300);
  text-decoration: underline;
}

/* Carousel Pagination Controls — Minimum 48px Touch Targets (A11Y-02 Fix) */
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.carousel-nav-btn {
  width: 48px;
  height: 48px;
  min-width: 48px;
  min-height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.carousel-nav-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-cyan-400);
}

.carousel-dots {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Dot hitboxes: 44x44px ergonomic touch bounds with centered visual dot */
.carousel-dot {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.carousel-dot-visual {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.35); /* Minimum 3.0:1 contrast on dark bg */
  transition: width var(--transition-fast), background-color var(--transition-fast);
}

.carousel-dot[aria-current="true"] .carousel-dot-visual {
  width: 24px;
  background: var(--color-cyan-400);
}

/* --------------------------------------------------------------------------
   14. Delivery Methodology: "How We Build"
   -------------------------------------------------------------------------- */
.methodology-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  position: relative;
}

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

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

.method-step-card {
  position: relative;
  display: flex;
  flex-direction: column;
}

.method-step-num {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 800;
  color: rgba(34, 211, 238, 0.3);
  line-height: 1;
  margin-bottom: 1rem;
}

.method-step-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.method-step-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   15. Semantic Tabular Data: Pricing & Delivery Models (GEO-03 Audited)
   -------------------------------------------------------------------------- */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  margin-top: 2rem;
  box-shadow: var(--shadow-sm);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
  min-width: 680px;
}

.pricing-table thead {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-medium);
}

.pricing-table th {
  padding: 1.25rem 1.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan-300);
}

.pricing-table td {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  vertical-align: top;
}

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

.pricing-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.price-tag {
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

/* --------------------------------------------------------------------------
   16. Client Testimonials
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

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

.testimonial-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1.5rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.1);
  color: var(--color-cyan-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.author-name {
  font-weight: 700;
  color: var(--color-cyan-300);
}

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

/* --------------------------------------------------------------------------
   17. FAQ Section: Semantic <details> & <summary> (AEO-01 Audited)
   -------------------------------------------------------------------------- */
.faq-accordion-group {
  max-width: 840px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  overflow: hidden;
}

.faq-item[open] {
  border-color: var(--color-cyan-400);
  background: rgba(14, 20, 34, 0.9);
}

.faq-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-cyan-400);
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 1.5rem 1.5rem 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   18. Conversion Banner & Trust Badges
   -------------------------------------------------------------------------- */
.conversion-banner {
  padding: clamp(2.5rem, 5vw, 4rem);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(99, 102, 241, 0.1) 100%);
  border: 1px solid rgba(6, 182, 212, 0.3);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.trust-badges-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.trust-badge-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}

.trust-badge-icon {
  color: var(--color-cyan-400);
}

/* --------------------------------------------------------------------------
   19. Footer Architecture (UI-01 Heading Hierarchy Audited)
   -------------------------------------------------------------------------- */
.site-footer {
  background: #04060b;
  border-top: 1px solid var(--border-subtle);
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: 2rem;
  margin-top: auto;
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer-main-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  }
}

.footer-col-title {
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-nav-link {
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--color-cyan-300);
}

.office-card-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.office-item {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.office-label {
  display: block;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.2rem;
}

.footer-social-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.social-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.social-icon-btn:hover {
  color: var(--color-cyan-400);
  border-color: var(--color-cyan-400);
  background: rgba(6, 182, 212, 0.1);
}

.footer-bottom-bar {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

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

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

/* --------------------------------------------------------------------------
   20. Native <dialog> Modal Component (WCAG Accessible Modal)
   -------------------------------------------------------------------------- */
dialog.modal-dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  border: none;
  background: transparent;
  padding: 1rem;
  max-width: 600px;
  width: calc(100% - 2rem);
  z-index: 2000;
}

dialog.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.modal-content-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-lg), var(--shadow-cyan-glow);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text-primary);
}

/* Form Elements */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-cyan-400);
  background: rgba(255, 255, 255, 0.06);
  outline: none;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

/* --------------------------------------------------------------------------
   21. WhatsApp Floating Action Button (A11Y-06 Fix)
   -------------------------------------------------------------------------- */
.whatsapp-fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 54px;
  height: 54px;
  min-width: 54px;
  min-height: 54px;
  border-radius: var(--radius-full);
  background: #25d366;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  z-index: 900;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.whatsapp-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.6);
}

/* --------------------------------------------------------------------------
   22. Live Operational Clocks Widget
   -------------------------------------------------------------------------- */
.clocks-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.clock-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
}

.clock-status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-emerald-400);
  box-shadow: 0 0 8px var(--color-emerald-glow);
}

.clock-time {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-cyan-300);
}