/* AltAssets Design System */

/* Import Fonts */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:wght@400;500;600;700&family=Instrument+Serif:wght@400;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* CSS Variables */
:root {
  /* Background Colors */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: #161e2e;

  /* Accent Colors */
  --accent-primary: #d4a853;
  --accent-primary-hover: #e5b962;
  --accent-secondary: #a88a3d;

  /* Category Colors */
  --color-infrastructure: #3b82f6;
  --color-private-credit: #8b5cf6;
  --color-real-estate: #14b8a6;
  --color-emerging: #f59e0b;

  /* Text Colors */
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  /* Risk Level Colors */
  --risk-low: #10b981;
  --risk-moderate: #f59e0b;
  --risk-high: #ef4444;

  /* Borders & Shadows */
  --border-color: #374151;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Typography */
  --font-serif: 'Instrument Serif', Georgia, serif;
  --font-sans: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', Consolas, 'Courier New', monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Monospace Numbers */
.mono {
  font-family: var(--font-mono);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-2xl) 0;
}

/* Navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
}

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

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.nav-links {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: var(--bg-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(212, 168, 83, 0.4);
  color: var(--bg-primary);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--border-color);
  color: var(--text-primary);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all 0.2s ease;
}

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

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

.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: var(--spacing-sm);
}

.stat-card .stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Hero Section */
.hero {
  padding: var(--spacing-2xl) 0;
  text-align: center;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--text-primary), var(--accent-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Allocation Ring */
.allocation-ring {
  position: relative;
  width: 300px;
  height: 300px;
  margin: var(--spacing-2xl) auto;
}

.allocation-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.allocation-ring circle {
  fill: none;
  stroke-width: 30;
  stroke-linecap: round;
}

.ring-traditional {
  stroke: var(--color-infrastructure);
}

.ring-alternatives {
  stroke: var(--accent-primary);
}

.ring-fixed {
  stroke: var(--color-real-estate);
}

.allocation-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.allocation-center .percentage {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--accent-primary);
}

.allocation-center .label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.allocation-legend {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.legend-dot.traditional { background: var(--color-infrastructure); }
.legend-dot.alternatives { background: var(--accent-primary); }
.legend-dot.fixed { background: var(--color-real-estate); }

/* Asset Table */
.asset-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--spacing-lg);
}

.asset-table th,
.asset-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.asset-table th {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.asset-table tbody tr {
  transition: background 0.2s ease;
}

.asset-table tbody tr:hover {
  background: var(--bg-tertiary);
}

.asset-name {
  font-weight: 500;
  color: var(--text-primary);
}

.asset-return {
  font-family: var(--font-mono);
  color: var(--risk-low);
}

/* Category Badges */
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.category-badge.infrastructure {
  background: rgba(59, 130, 246, 0.2);
  color: var(--color-infrastructure);
}

.category-badge.private_credit {
  background: rgba(139, 92, 246, 0.2);
  color: var(--color-private-credit);
}

.category-badge.real_estate {
  background: rgba(20, 184, 166, 0.2);
  color: var(--color-real-estate);
}

.category-badge.emerging {
  background: rgba(245, 158, 11, 0.2);
  color: var(--color-emerging);
}

/* Risk Badges */
.risk-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.risk-badge.low {
  background: rgba(16, 185, 129, 0.2);
  color: var(--risk-low);
}

.risk-badge.moderate {
  background: rgba(245, 158, 11, 0.2);
  color: var(--risk-moderate);
}

.risk-badge.high {
  background: rgba(239, 68, 68, 0.2);
  color: var(--risk-high);
}

/* Category Bar */
.category-bar {
  height: 4px;
  width: 100%;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-sm);
}

.category-bar.infrastructure { background: var(--color-infrastructure); }
.category-bar.private_credit { background: var(--color-private-credit); }
.category-bar.real_estate { background: var(--color-real-estate); }
.category-bar.emerging { background: var(--color-emerging); }

/* Category Section */
.category-section {
  margin-bottom: var(--spacing-2xl);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.category-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.category-icon.infrastructure { background: rgba(59, 130, 246, 0.2); }
.category-icon.private_credit { background: rgba(139, 92, 246, 0.2); }
.category-icon.real_estate { background: rgba(20, 184, 166, 0.2); }
.category-icon.emerging { background: rgba(245, 158, 11, 0.2); }

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

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-primary);
}

/* Slider */
.slider-container {
  margin-bottom: var(--spacing-lg);
}

.slider-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
}

.slider-value {
  font-family: var(--font-mono);
  color: var(--accent-primary);
  font-weight: 600;
}

input[type="range"] {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: transform 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
}

/* Gap Analysis */
.gap-analysis {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.gap-bar {
  position: relative;
  height: 40px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
}

.gap-current {
  position: absolute;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: var(--spacing-md);
  font-family: var(--font-mono);
  font-weight: 600;
  transition: width 0.5s ease;
}

.gap-optimal {
  position: absolute;
  height: 100%;
  width: 2px;
  background: var(--text-primary);
}

.gap-optimal::after {
  content: attr(data-value);
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Recommendations */
.recommendation-list {
  list-style: none;
  padding: 0;
}

.recommendation-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.recommendation-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(212, 168, 83, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.recommendation-content h4 {
  margin-bottom: var(--spacing-xs);
}

.recommendation-content p {
  font-size: 0.875rem;
}

/* AI Analysis */
.analysis-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

.analysis-section h3 {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  color: var(--accent-primary);
}

.analysis-content {
  color: var(--text-secondary);
  line-height: 1.8;
}

.analysis-content p {
  margin-bottom: var(--spacing-md);
}

.analysis-meta {
  display: flex;
  gap: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  margin-top: var(--spacing-lg);
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.meta-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.meta-value {
  font-family: var(--font-mono);
  color: var(--accent-primary);
}

/* Asset Detail Header */
.asset-header {
  margin-bottom: var(--spacing-2xl);
}

.asset-header h1 {
  margin-bottom: var(--spacing-md);
}

.asset-meta {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

/* Loading State */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

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

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

/* Value Props */
.value-props {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin: var(--spacing-2xl) 0;
}

.value-prop {
  text-align: center;
  padding: var(--spacing-xl);
}

.value-prop-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, rgba(212, 168, 83, 0.2), rgba(168, 138, 61, 0.1));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.value-prop h3 {
  margin-bottom: var(--spacing-sm);
}

/* Page Header */
.page-header {
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-xl);
}

.page-header h1 {
  margin-bottom: var(--spacing-sm);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

/* Assets Grid */
.assets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-lg);
}

.asset-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.2s ease;
}

.asset-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

.asset-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.asset-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.asset-card-description {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.asset-card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-sm);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

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

.asset-stat-value {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.asset-stat-label {
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* Generate Button */
.generate-btn {
  margin-top: var(--spacing-lg);
}

/* Alert */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid var(--color-infrastructure);
  color: var(--color-infrastructure);
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--risk-low);
  color: var(--risk-low);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid var(--risk-moderate);
  color: var(--risk-moderate);
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--risk-high);
  color: var(--risk-high);
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

/* Responsive */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .two-column {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }

  .hero h1 {
    font-size: 2.5rem;
  }

  .nav-links {
    gap: var(--spacing-md);
  }

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

  .value-props {
    grid-template-columns: 1fr;
  }

  .allocation-legend {
    flex-direction: column;
    align-items: center;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

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

  .analysis-meta {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .asset-card-stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .hero h1 {
    font-size: 2rem;
  }

  .allocation-ring {
    width: 250px;
    height: 250px;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    padding: 0 var(--spacing-lg);
  }
}