/* ============================================================================
   Aero-Sovereign R&D Labs & Global Patent Actuarial Group
   Master-Class Scientific Layout & High-Dimensional Patent Matrix Authority
   ============================================================================ */

:root {
  /* Core Color System */
  --color-obsidian-black: #010204;
  --color-truth-white: #F8FAFC;
  --color-patent-gold: #E5C17D;
  --color-critical-red: #FF453A;
  
  /* Neutral Palette */
  --color-dark-gray: #1A1D23;
  --color-medium-gray: #2D3139;
  --color-light-gray: #4A5568;
  --color-pale-gray: #8A92A2;
  
  /* Typography */
  --font-sans: 'Segoe UI', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Courier New', 'Monaco', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* ============================================================================
   Global Styles
   ============================================================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-obsidian-black);
  color: var(--color-truth-white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}

/* ============================================================================
   Typography
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 3.5rem;
  color: var(--color-truth-white);
}

h2 {
  font-size: 2.5rem;
  color: var(--color-truth-white);
}

h3 {
  font-size: 1.75rem;
  color: var(--color-truth-white);
}

h4 {
  font-size: 1.25rem;
  color: var(--color-truth-white);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-pale-gray);
  line-height: 1.8;
}

a {
  color: var(--color-patent-gold);
  text-decoration: none;
  transition: all 0.3s ease;
}

a:hover {
  color: var(--color-truth-white);
  text-decoration: underline;
}

code {
  font-family: var(--font-mono);
  background-color: var(--color-dark-gray);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--color-patent-gold);
  font-size: 0.9em;
}

/* ============================================================================
   Navigation
   ============================================================================ */

.navbar {
  background-color: rgba(1, 2, 4, 0.95);
  border-bottom: 1px solid var(--color-medium-gray);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-patent-gold);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.nav-link {
  color: var(--color-pale-gray) !important;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-patent-gold);
  transition: width 0.3s ease;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--color-patent-gold) !important;
}

/* ============================================================================
   Hero Section
   ============================================================================ */

.hero {
  background: linear-gradient(135deg, var(--color-obsidian-black) 0%, var(--color-dark-gray) 100%);
  padding: 8rem var(--spacing-lg) 6rem;
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(229, 193, 125, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 69, 58, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  text-align: center;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-truth-white) 0%, var(--color-patent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-patent-gold);
  margin-bottom: var(--spacing-xl);
  font-style: italic;
  font-weight: 300;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-pale-gray);
  max-width: 900px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.9;
}

/* ============================================================================
   Sections
   ============================================================================ */

section {
  padding: 6rem var(--spacing-lg);
  border-bottom: 1px solid var(--color-medium-gray);
}

section:last-child {
  border-bottom: none;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  padding-bottom: var(--spacing-md);
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-patent-gold), var(--color-critical-red));
}

.section-header p {
  font-size: 1.1rem;
  color: var(--color-pale-gray);
  max-width: 700px;
  margin: var(--spacing-md) auto 0;
}

/* ============================================================================
   Cards & Components
   ============================================================================ */

.card {
  background-color: var(--color-dark-gray);
  border: 1px solid var(--color-medium-gray);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-patent-gold), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.card:hover {
  border-color: var(--color-patent-gold);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(229, 193, 125, 0.1);
}

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

.card h3 {
  color: var(--color-patent-gold);
  margin-bottom: var(--spacing-md);
  font-size: 1.3rem;
}

.card p {
  color: var(--color-pale-gray);
  font-size: 0.95rem;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-patent-gold);
  color: var(--color-obsidian-black);
  border-color: var(--color-patent-gold);
}

.btn-primary:hover {
  background-color: transparent;
  color: var(--color-patent-gold);
  box-shadow: 0 0 20px rgba(229, 193, 125, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-patent-gold);
  border-color: var(--color-patent-gold);
}

.btn-secondary:hover {
  background-color: var(--color-patent-gold);
  color: var(--color-obsidian-black);
}

.btn-danger {
  background-color: var(--color-critical-red);
  color: var(--color-truth-white);
  border-color: var(--color-critical-red);
}

.btn-danger:hover {
  background-color: transparent;
  color: var(--color-critical-red);
  box-shadow: 0 0 20px rgba(255, 69, 58, 0.3);
}

/* ============================================================================
   Grid & Layout
   ============================================================================ */

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-lg);
  margin: 0 auto;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================================================
   Data Display
   ============================================================================ */

.metric {
  text-align: center;
  padding: var(--spacing-lg);
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-patent-gold);
  margin-bottom: var(--spacing-sm);
}

.metric-label {
  font-size: 0.9rem;
  color: var(--color-pale-gray);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.stat-box {
  background-color: var(--color-dark-gray);
  border-left: 4px solid var(--color-patent-gold);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
}

.stat-box.alert {
  border-left-color: var(--color-critical-red);
}

.stat-box h4 {
  color: var(--color-patent-gold);
  margin-bottom: var(--spacing-sm);
}

.stat-box p {
  color: var(--color-pale-gray);
  font-size: 0.95rem;
}

/* ============================================================================
   Tables
   ============================================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
}

thead {
  background-color: var(--color-dark-gray);
  border-bottom: 2px solid var(--color-patent-gold);
}

th {
  padding: var(--spacing-md);
  text-align: left;
  color: var(--color-patent-gold);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-medium-gray);
  color: var(--color-pale-gray);
}

tbody tr:hover {
  background-color: rgba(229, 193, 125, 0.05);
}

/* ============================================================================
   Forms
   ============================================================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--color-patent-gold);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 1px;
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: var(--spacing-md);
  background-color: var(--color-dark-gray);
  border: 1px solid var(--color-medium-gray);
  border-radius: var(--radius-md);
  color: var(--color-truth-white);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-patent-gold);
  box-shadow: 0 0 0 3px rgba(229, 193, 125, 0.1);
}

/* ============================================================================
   Footer
   ============================================================================ */

footer {
  background-color: var(--color-dark-gray);
  border-top: 1px solid var(--color-medium-gray);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: var(--color-patent-gold);
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

.footer-section p,
.footer-section a {
  color: var(--color-pale-gray);
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-section a:hover {
  color: var(--color-patent-gold);
}

.footer-bottom {
  border-top: 1px solid var(--color-medium-gray);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-pale-gray);
  font-size: 0.85rem;
}

/* ============================================================================
   Utilities
   ============================================================================ */

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

.text-right {
  text-align: right;
}

.text-left {
  text-align: left;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.pt-1 { padding-top: var(--spacing-sm); }
.pt-2 { padding-top: var(--spacing-md); }
.pt-3 { padding-top: var(--spacing-lg); }
.pt-4 { padding-top: var(--spacing-xl); }

.pb-1 { padding-bottom: var(--spacing-sm); }
.pb-2 { padding-bottom: var(--spacing-md); }
.pb-3 { padding-bottom: var(--spacing-lg); }
.pb-4 { padding-bottom: var(--spacing-xl); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.hidden {
  display: none !important;
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero {
    padding: 4rem var(--spacing-md) 3rem;
    min-height: auto;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  section {
    padding: 4rem var(--spacing-md);
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .metric-value {
    font-size: 1.75rem;
  }
}

/* ============================================================================
   Animations
   ============================================================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}