:root {
  /* Color Palette - Dark Theme */
  --bg-primary: #0a0e1a;
  --bg-secondary: #12172a;
  --bg-tertiary: #1a2035;
  --bg-card: #1e2640;
  --bg-hover: #252d48;
  
  /* Accent Colors */
  --accent-primary: #6366f1;
  --accent-secondary: #8b5cf6;
  --accent-success: #10b981;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  
  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Borders & Shadows */
  --border-color: #2d3548;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Animated Background */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.05) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: bgMove 20s linear infinite;
  z-index: -1;
}

@keyframes bgMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

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

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

/* Navigation */
nav {
  display: flex;
  gap: var(--spacing-sm);
}

.nav-btn {
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.nav-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left 0.3s ease;
  z-index: -1;
}

.nav-btn:hover::before,
.nav-btn.active::before {
  left: 0;
}

.nav-btn:hover,
.nav-btn.active {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

/* Main Content */
main {
  padding: var(--spacing-xl) 0;
  min-height: calc(100vh - 200px);
}

.page {
  display: none;
}

.page.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

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

/* Section Headers */
.section-header {
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

/* Card Styles */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  transition: left 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.card:hover::before {
  left: 0;
}

/* Prediction Card */
.prediction-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.prediction-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.stock-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.stock-ticker {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-family: var(--font-mono);
}

.confidence-badge {
  background: var(--gradient-success);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.prediction-metrics {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.metric {
  flex: 1;
}

.metric-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 0.25rem;
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 700;
}

.metric-value.positive {
  color: var(--accent-success);
}

.metric-value.negative {
  color: var(--accent-danger);
}

.prediction-justification {
  color: var(--text-secondary);
  line-height: 1.6;
  padding: var(--spacing-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-primary);
}

/* Summary Cards */
.summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  position: relative;
  overflow: hidden;
}

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

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

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

.summary-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.summary-content {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1.05rem;
}

/* News List */
.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.news-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  cursor: pointer;
  display: flex;
  gap: var(--spacing-md);
}

.news-item:hover {
  background: var(--bg-hover);
  border-color: var(--accent-primary);
  transform: translateX(5px);
}

.news-thumbnail {
  width: 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-tertiary);
}

.news-content {
  flex: 1;
}

.news-meta {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.news-ticker {
  background: var(--accent-primary);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.news-publisher {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.news-date {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-left: auto;
}

.news-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
  line-height: 1.4;
}

/* Loading Spinner */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 300px;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  nav {
    width: 100%;
    justify-content: center;
  }
  
  .news-item {
    flex-direction: column;
  }
  
  .news-thumbnail {
    width: 100%;
    height: 150px;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
}

/* Utilities */
.text-center {
  text-align: center;
}

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

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