/* ===================================================================
   BanterBox Policy Topics Explorer Styles
   Version: 1.0
   Description: Styles for topics network visualization and grid
   =================================================================== */

/* ===================================================================
   1. TOPICS HERO
   =================================================================== */

.topics-hero {
  position: relative;
  padding: 120px 0 60px;
  overflow: hidden;
}

.topics-hero .hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.network-bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(var(--color-primary-rgb), 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(var(--color-accent-rgb), 0.05) 0%, transparent 50%);
  opacity: 0.5;
}

.topics-hero .hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.topics-hero .hero-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.topics-hero .hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 3rem;
}

.topic-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  flex-wrap: wrap;
}

.topic-stats .stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--color-text-secondary);
}

/* ===================================================================
   2. NETWORK CONTROLS
   =================================================================== */

.topic-network-section {
  padding: 4rem 0;
  background: var(--glass-bg-light);
}

.network-controls {
  display: flex;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: white;
  border-radius: 16px;
  border: 1px solid var(--glass-border);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.control-group label {
  font-weight: 500;
  color: var(--color-text-secondary);
}

.view-toggle {
  display: flex;
  background: var(--glass-bg);
  border-radius: 8px;
  padding: 0.25rem;
}

.toggle-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  color: var(--color-text-secondary);
}

.toggle-btn:hover {
  background: rgba(var(--color-primary-rgb), 0.05);
}

.toggle-btn.active {
  background: white;
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.control-select {
  padding: 0.5rem 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  cursor: pointer;
}

/* ===================================================================
   3. NETWORK VISUALIZATION
   =================================================================== */

.network-container {
  position: relative;
  background: white;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  min-height: 600px;
}

.network-canvas {
  width: 100%;
  height: 600px;
  position: relative;
}

/* D3.js Network Styles */
.node {
  cursor: pointer;
}

.node circle {
  transition: all 0.3s ease;
}

.node:hover circle {
  stroke-width: 3px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.node text {
  font-size: 12px;
  font-weight: 500;
  text-anchor: middle;
  pointer-events: none;
}

.link {
  stroke: #e0e0e0;
  stroke-opacity: 0.6;
  stroke-width: 1.5px;
  transition: all 0.3s ease;
}

.link.active {
  stroke: var(--color-accent);
  stroke-opacity: 1;
  stroke-width: 3px;
}

/* Topic Details Panel */
.topic-details-panel {
  position: absolute;
  right: -400px;
  top: 0;
  bottom: 0;
  width: 400px;
  background: white;
  border-left: 1px solid var(--glass-border);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  transition: right 0.3s ease;
  z-index: 10;
}

.topic-details-panel.active {
  right: 0;
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 32px;
  height: 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  transition: all 0.3s ease;
}

.close-btn:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.panel-content {
  padding: 2rem;
  height: 100%;
  overflow-y: auto;
}

.panel-content .topic-name {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.panel-content .topic-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.topic-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.topic-metrics .metric {
  text-align: center;
  padding: 1rem;
  background: var(--glass-bg);
  border-radius: 8px;
}

.topic-metrics .metric-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.topic-metrics .metric-label {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.related-topics h4 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.related-list a {
  padding: 0.75rem;
  background: var(--glass-bg);
  border-radius: 8px;
  text-decoration: none;
  color: var(--color-text);
  transition: all 0.3s ease;
}

.related-list a:hover {
  background: var(--glass-bg-light);
  transform: translateX(4px);
}

.explore-btn {
  margin-top: 2rem;
}

/* ===================================================================
   4. GRID VIEW
   =================================================================== */

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.topic-card {
  background: white;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 2rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.topic-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--color-accent);
}

.topic-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.topic-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.topic-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.topic-stats {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.topic-stats .stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.topic-stats svg {
  color: var(--color-accent);
}

.topic-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.topic-link:hover {
  transform: translateX(4px);
}

/* ===================================================================
   5. CROSS-TOPIC INSIGHTS
   =================================================================== */

.cross-topic-insights {
  padding: 6rem 0;
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.insight-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.insight-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  border-color: var(--color-accent);
}

.insight-topics {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.topic-tag {
  padding: 0.25rem 0.75rem;
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.connector {
  color: var(--color-accent);
  font-weight: 700;
}

.insight-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.insight-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.insight-stats {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-primary);
  font-weight: 500;
}

/* ===================================================================
   6. TRENDING TOPICS
   =================================================================== */

.trending-topics {
  padding: 4rem 0;
  background: var(--glass-bg-light);
}

.trending-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.trend-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  background: white;
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: all 0.3s ease;
}

.trend-card:hover {
  transform: translateX(8px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border-color: var(--color-accent);
}

.trend-rank {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.3;
}

.trend-content h3 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.trend-content p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.trend-growth {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--color-success);
  font-weight: 600;
}

.trend-chart {
  width: 100px;
  height: 40px;
}

.mini-trend-chart {
  width: 100%;
  height: 100%;
}

/* ===================================================================
   7. EXPLORER CTA
   =================================================================== */

.explorer-cta {
  padding: 6rem 0;
  background: linear-gradient(135deg, 
    rgba(var(--color-primary-rgb), 0.02) 0%, 
    rgba(var(--color-accent-rgb), 0.02) 100%);
}

.explorer-cta .cta-wrapper {
  background: white;
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 3rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.explorer-cta .cta-title {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.explorer-cta .cta-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.ai-search-box {
  display: flex;
  gap: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.ai-search-input {
  flex: 1;
  padding: 1rem 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.ai-search-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.1);
}

.ai-search-box .btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

/* ===================================================================
   8. RESPONSIVE DESIGN
   =================================================================== */

@media (max-width: 1200px) {
  .topic-details-panel {
    width: 350px;
  }
}

@media (max-width: 768px) {
  .network-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .control-group {
    justify-content: space-between;
  }
  
  .network-canvas {
    height: 400px;
  }
  
  .topic-details-panel {
    position: fixed;
    width: 100%;
    height: 70vh;
    top: auto;
    bottom: -70vh;
    left: 0;
    right: auto;
    border-left: none;
    border-top: 1px solid var(--glass-border);
    border-radius: 24px 24px 0 0;
    transition: bottom 0.3s ease;
  }
  
  .topic-details-panel.active {
    bottom: 0;
    right: auto;
  }
  
  .grid-container {
    grid-template-columns: 1fr;
  }
  
  .insights-grid {
    grid-template-columns: 1fr;
  }
  
  .trending-grid {
    grid-template-columns: 1fr;
  }
  
  .ai-search-box {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .topics-hero .hero-title {
    font-size: 2rem;
  }
  
  .topic-stats {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .view-toggle {
    width: 100%;
  }
  
  .toggle-btn {
    flex: 1;
    justify-content: center;
  }
  
  .trend-card {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .trend-chart {
    display: none;
  }
}

/* ===================================================================
   9. ANIMATIONS
   =================================================================== */

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

.fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}

.fade-in[data-delay="0.1"] { animation-delay: 0.1s; }
.fade-in[data-delay="0.2"] { animation-delay: 0.2s; }
.fade-in[data-delay="0.3"] { animation-delay: 0.3s; }

/* Network node animations */
@keyframes nodeAppear {
  from {
    opacity: 0;
    transform: scale(0);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.node {
  animation: nodeAppear 0.5s ease forwards;
}

/* Link hover effect */
@keyframes linkPulse {
  0%, 100% { stroke-width: 1.5px; }
  50% { stroke-width: 3px; }
}

/* ===================================================================
   10. LOADING STATES
   =================================================================== */

.network-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.9);
  z-index: 20;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}