/* ==========================================================================
   INCISIVE CYBER DESIGN SYSTEM & BRAND STYLESHEET
   Version 3.0 (Top-Left Emerald Teal Infinity Logo Edition)
   Palette: Pristine White Canvas, Soft Slate Fills, Deep Slate Obsidian Typography, Emerald Teal Gradients
   Typography: Poppins (Headings), Inter / Roboto (Body & Controls)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties & Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Canvas & Section Fills */
  --bg-canvas: #ffffff;
  --bg-section-alt: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-badge: #f0fdfa;
  --bg-header: rgba(255, 255, 255, 0.95);

  /* Typography Colors */
  --text-primary: #0f172a;       /* WCAG AAA 19.5:1 Contrast vs White */
  --text-secondary: #334155;     /* WCAG AAA 11.8:1 Contrast vs White */
  --text-muted: #64748b;         /* WCAG AA 4.6:1 Contrast vs White */
  --text-brand: #0f766e;

  /* Emerald Teal Brand Accents & Gradients (Top-Left Demo Logo Suite) */
  --accent-teal-deep: #0f766e;
  --accent-teal-mid: #0d9488;
  --accent-emerald: #10b981;
  --accent-mint: #34d399;
  --brand-gradient: linear-gradient(135deg, #0f766e 0%, #0d9488 50%, #10b981 100%);
  --brand-gradient-hover: linear-gradient(135deg, #094e49 0%, #0f766e 50%, #0d9488 100%);

  /* Structural Borders & Shadows */
  --border-color: #e2e8f0;
  --border-focus: #0f766e;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 40px -15px rgba(15, 23, 42, 0.08);

  /* Typography Scale */
  --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout Spacing & Geometry */
  --section-padding-y: 120px;
  --container-max-width: 1280px;
  --header-height: 84px;
  --card-padding: 40px;
  --radius-card: 16px;
  --radius-btn: 10px;
  --radius-pill: 50px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background-color: var(--bg-canvas);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
}

p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

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

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

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 4px;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

/* --------------------------------------------------------------------------
   3. Header Navigation & Branding
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  background: var(--bg-header);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-normal);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: 48px;
}

.brand-logo img {
  height: 46px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.2px;
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-blue-cobalt);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: 0.5rem;
}

/* --------------------------------------------------------------------------
   4. Buttons (Executive Light Standard)
   Primary CTA: Ocean Cobalt Blue Gradient with Crisp White Text
   -------------------------------------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background: var(--brand-gradient);
  color: #ffffff;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-btn);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  box-shadow: 0 4px 14px rgba(29, 78, 216, 0.25);
}

.btn-primary:hover {
  background: var(--brand-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(29, 78, 216, 0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  background-color: #ffffff;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-btn);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--accent-blue-cobalt);
  color: var(--text-brand);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* --------------------------------------------------------------------------
   5. Hero Section (Executive Light & Ocean Blue Ribbon Accent)
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding-top: calc(var(--header-height) + 5rem);
  padding-bottom: 6rem;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: 
    radial-gradient(circle at 85% 20%, rgba(29, 78, 216, 0.06) 0%, transparent 45%),
    radial-gradient(circle at 15% 80%, rgba(56, 189, 248, 0.05) 0%, transparent 40%),
    var(--bg-canvas);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-badge);
  border: 1px solid rgba(29, 78, 216, 0.2);
  padding: 0.45rem 1.25rem;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-brand);
  margin-bottom: 1.75rem;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-blue-cobalt);
}

.hero-title {
  font-size: 3.75rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

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

.hero-description {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card-panel {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-card-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--brand-gradient);
}

.promise-tagline {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-brand);
  margin-bottom: 1rem;
}

.promise-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-color);
}

.promise-item {
  text-align: center;
}

.promise-item-title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.promise-item-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   6. Service Pillars Section (Generous White Space)
   -------------------------------------------------------------------------- */
.section {
  padding: var(--section-padding-y) 0;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 4.5rem auto;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

.section-subtitle {
  font-size: 1.15rem;
}

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

.pillar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: var(--card-padding);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.pillar-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-badge);
  border: 1px solid rgba(29, 78, 216, 0.2);
  border-radius: var(--radius-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-blue-cobalt);
  margin-bottom: 1.75rem;
}

.pillar-title {
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.pillar-desc {
  font-size: 0.98rem;
  margin-bottom: 1.75rem;
  flex-grow: 1;
}

.pillar-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-blue-cobalt);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.pillar-link:hover {
  gap: 0.75rem;
  color: var(--accent-blue-sapphire);
}

/* --------------------------------------------------------------------------
   7. Governance & Core Principles Section
   Legal, Ethical, Moral, Secure
   -------------------------------------------------------------------------- */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.principle-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 2.25rem var(--card-padding);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.principle-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.principle-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--brand-gradient);
}

.principle-name {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--accent-blue-cobalt);
}

.principle-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   8. Engagement Modal & Form (Clean Light Standard)
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

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

.modal-content {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  width: 100%;
  max-width: 600px;
  padding: 3rem;
  position: relative;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  box-shadow: 0 25px 60px rgba(15, 23, 42, 0.2);
}

.modal-backdrop.active .modal-content {
  transform: scale(1);
}

.modal-close-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--text-muted);
  font-size: 1.75rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--transition-fast), color var(--transition-fast);
}

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

.modal-title {
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
}

.modal-subtitle {
  font-size: 0.98rem;
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.35rem;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
  color: var(--text-primary);
}

.form-input, .form-textarea {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 0.85rem 1.15rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.15);
}

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

.form-status {
  margin-top: 1.25rem;
  font-size: 0.95rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-btn);
  display: none;
}

.form-status.success {
  display: block;
  background: #f0fdf4;
  border: 1px solid #86efac;
  color: #166534;
}

.form-status.error {
  display: block;
  background: #fef2f2;
  border: 1px solid #fca5a5;
  color: #991b1b;
}

/* --------------------------------------------------------------------------
   9. Footer & Legal Standards
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-section-alt);
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 2.5rem 0;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr repeat(3, 1fr);
  gap: 3.5rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  font-size: 0.95rem;
  margin-top: 1.25rem;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 1.35rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-blue-cobalt);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* --------------------------------------------------------------------------
   10. Responsive Adaptations
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  :root {
    --section-padding-y: 80px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .principles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }

  .hero-title {
    font-size: 2.6rem;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}