/* Knowledge Graph Styles */

:root {
  --graph-view-overlap: 40px;
}

/* ================================
   UNIFIED CONTROLS (Homepage)
   ================================ */

#filter-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: fit-content;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-md) 0;
}

#home-page #graph-view #graph-container {
  margin-top: 0;
}

#home-controls {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
  margin-bottom: var(--space-md);
}

#home-page #graph-search {
  flex: 1;
  min-width: 0;
  height: 40px;
  margin-bottom: 0;
}

#home-page #graph-search input {
  height: 100%;
  box-sizing: border-box;
}

#home-controls .view-toggle-button {
  height: 40px;
  width: 40px;
  flex-shrink: 0;
}

#home-page #graph-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  width: 100%;
  padding-bottom: var(--space-3xl);
  position: relative;
}

#home-page #graph-filters::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--color-border) 20%,
    var(--color-border) 80%,
    transparent
  );
  z-index: 10;
}


.view-toggle-button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.view-toggle-button:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.view-toggle-button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Homepage Graph View */
#home-page #graph-view {
  position: relative;
  margin-top: -64px;
  padding-top: 40px;
}

#home-page #graph-container {
  height: 70vh;
  min-height: 500px;
  max-height: 800px;
  border: none;
  border-radius: 0;
  margin-bottom: 0;
}

#home-page .graph-legend {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  background: rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-full);
  z-index: 10;
}

#home-page .graph-legend.desktop-only {
  display: none;
}

#home-page .graph-legend.touch-only {
  display: flex;
  bottom: var(--space-lg);
}

@media (pointer: fine) {
  #home-page .graph-legend.desktop-only {
    display: flex;
  }

  #home-page .graph-legend.touch-only {
    display: none;
  }
}

#home-page .legend-separator {
  opacity: 0.4;
}

#home-page .legend-hint {
  opacity: 0.7;
  white-space: nowrap;
}

/* Lock body scroll and remove footer margin when graph view is showing */
body:has(#home-page #graph-view[style*="display: block"]) {
  overflow: hidden;
}

body:has(#home-page #graph-view[style*="display: block"]) footer {
  margin-top: 0;
}

@media (max-width: 768px) {
  #home-controls {
    flex-wrap: wrap;
    justify-content: center;
  }

  #home-page #graph-search {
    width: 100%;
    max-width: none;
    order: 1;
  }

  #home-controls .view-toggle-button {
    order: 2;
  }

  #home-page #graph-filters {
    justify-content: center;
  }

  #home-page #graph-container {
    height: 60vh;
    min-height: 400px;
  }

  #home-page .graph-legend {
    white-space: nowrap;
  }
}

/* ================================
   EXPLORE PAGE
   ================================ */

#explore-page {
  max-width: var(--container-lg);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

/* Header with fullscreen button */
.explore-header {
  margin-bottom: var(--space-lg);
}

#explore-page h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#explore-page .explore-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
}

/* Fullscreen Button (inside graph container) */
.fullscreen-button {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.7);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 15;
}

.fullscreen-button:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
  background: var(--color-surface);
}

.fullscreen-button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Search Input */
#graph-search {
  position: relative;
  margin-bottom: var(--space-md);
}

#graph-search .search-icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  pointer-events: none;
}

#search-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  padding-left: calc(var(--space-md) + 24px);
  padding-right: calc(var(--space-md) + 30px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

#search-input::placeholder {
  color: var(--color-text-tertiary);
}

#search-input:focus {
  outline: none;
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-cyan-rgb), 0.2);
}

.search-clear {
  position: absolute;
  right: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.search-clear:hover {
  background: var(--color-border);
  color: var(--color-text-primary);
}

/* Category Filter Buttons */
#graph-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.graph-filter-button {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-text-secondary);
  font-family: inherit;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.graph-filter-button:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text-primary);
}

.graph-filter-button.active {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  background: rgba(var(--color-accent-cyan-rgb), 0.1);
}

.graph-filter-button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.4);
}

/* Graph Container */
#graph-container {
  position: relative;
  width: 100%;
  height: 600px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-black);
  overflow: hidden;
  margin-bottom: var(--space-lg);
  -webkit-tap-highlight-color: transparent;
}

#graph {
  width: 100%;
  height: 100%;
  -webkit-tap-highlight-color: transparent;
}

#graph canvas {
  -webkit-tap-highlight-color: transparent;
}

/* Info Panel */
.info-panel {
  position: absolute;
  width: calc(100% - 32px);
  max-width: 340px;
  padding: var(--space-md);
  background: rgba(0, 0, 0, 0.92);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  z-index: 25;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

@media (pointer: fine) {
  .info-panel {
    width: 280px;
    max-width: none;
  }
}

.info-panel-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
  line-height: var(--line-height-tight);
}

.info-panel-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-sm);
}

.info-panel-separator {
  opacity: 0.5;
}

.info-panel-categories {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

.info-panel-category {
  padding: 2px 8px;
  font-size: var(--font-size-xs);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  color: var(--color-text-secondary);
}

.info-panel-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.info-panel-hint {
  font-size: var(--font-size-xs);
  color: var(--color-accent-cyan);
  opacity: 0.8;
}

.info-panel-button {
  display: none;
  width: 100%;
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: transparent;
  color: var(--color-accent-cyan);
  border: 1px solid var(--color-accent-cyan);
  border-radius: var(--radius-md);
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.info-panel-button:active {
  background: var(--color-accent-cyan);
  color: var(--color-background);
}

/* Touch device adjustments - mobile first, hide on desktop */
.info-panel {
  pointer-events: auto;
}

.info-panel-button {
  display: block;
}

.desktop-only {
  display: none;
}

@media (pointer: fine) {
  .info-panel {
    pointer-events: none;
  }

  .info-panel-button {
    display: none;
  }

  .desktop-only {
    display: block;
  }

  .touch-only {
    display: none;
  }
}

/* Legend */
#graph-legend {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  margin-bottom: var(--space-lg);
  background: var(--color-background-card);
}

.legend-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.legend-size-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-style: italic;
}

/* Instructions */
.graph-instructions {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xl);
}

/* Back to Home Link */
#explore-page .back-to-home {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

#explore-page .back-to-home a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  transition: color var(--transition-fast);
}

#explore-page .back-to-home a:hover {
  color: var(--color-accent-cyan);
}

#explore-page .back-to-home svg {
  transition: transform var(--transition-fast);
}

#explore-page .back-to-home a:hover svg {
  transform: translateX(-4px);
}

/* Fullscreen Mode */
#explore-page.fullscreen,
#home-page.fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  max-width: none;
  padding: 0;
  background: var(--color-background);
  z-index: 9999;
  overflow: hidden;
}

#explore-page.fullscreen .explore-header,
#explore-page.fullscreen #graph-legend,
#explore-page.fullscreen .graph-instructions,
#explore-page.fullscreen .back-to-home {
  display: none;
}

#explore-page.fullscreen #graph-search {
  position: absolute;
  top: var(--space-xl);
  left: var(--space-xl);
  width: 280px;
  z-index: 20;
  margin-bottom: 0;
}

#explore-page.fullscreen #search-input {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  border-color: var(--color-border);
}

#explore-page.fullscreen #search-input:focus {
  background: rgba(0, 0, 0, 0.9);
}

#explore-page.fullscreen .search-icon {
  color: var(--color-text-secondary);
  z-index: 1;
}

#explore-page.fullscreen .search-clear {
  background: rgba(255, 255, 255, 0.1);
}

#explore-page.fullscreen #graph-filters {
  position: absolute;
  top: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  margin-bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
}

#explore-page.fullscreen #graph-container {
  height: 100vh;
  margin-bottom: 0;
  border: none;
  border-radius: 0;
}

#explore-page.fullscreen .fullscreen-button {
  top: var(--space-md);
  right: var(--space-md);
}

#explore-page.fullscreen .expand-icon {
  display: none;
}

#explore-page.fullscreen .collapse-icon {
  display: block !important;
}

/* Homepage Fullscreen Mode */
#home-page.fullscreen #filter-section {
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  right: calc(var(--space-md) + 48px);
  width: auto;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-sm);
  z-index: 20;
}

#home-page.fullscreen #home-controls {
  width: auto;
  flex: none;
  margin: 0;
}

#home-page.fullscreen #graph-search {
  width: 280px;
  flex: none;
  margin-bottom: 0;
}

#home-page.fullscreen #search-input {
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  border-color: var(--color-border);
}

#home-page.fullscreen #search-input:focus {
  background: rgba(0, 0, 0, 0.9);
}

#home-page.fullscreen .search-icon {
  color: var(--color-text-secondary);
  z-index: 1;
}

#home-page.fullscreen .search-clear {
  background: rgba(255, 255, 255, 0.1);
}

#home-page.fullscreen .view-toggle-button {
  display: none;
}

#home-page.fullscreen #graph-filters {
  width: auto;
  flex: 1 1 auto;
  min-width: 0;
  padding: 0;
  margin: 0;
  background: transparent;
  border: none;
  align-items: center;
}

#home-page.fullscreen #graph-filters .graph-filter-button {
  height: 40px;
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
}


#home-page.fullscreen #graph-filters::after {
  display: none;
}

#home-page.fullscreen #list-view {
  display: none !important;
}

#home-page.fullscreen #graph-view {
  margin-top: 0;
  padding-top: 0;
  height: 100vh;
  height: 100dvh;
}

#home-page.fullscreen #graph-container {
  height: 100vh;
  height: 100dvh;
  max-height: none;
  margin-bottom: 0;
  border-radius: 0;
}

#home-page.fullscreen .fullscreen-button {
  position: fixed;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
}

#home-page.fullscreen .expand-icon {
  display: none;
}

#home-page.fullscreen .collapse-icon {
  display: block !important;
}

#home-page.fullscreen .graph-legend {
  bottom: calc(var(--space-lg) + env(safe-area-inset-bottom, 0px));
}

/* Category Dropdown (hidden by default, shown in fullscreen on small screens) */
#home-page .category-dropdown,
#filter-section .category-dropdown,
.category-dropdown {
  display: none !important;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  #explore-page {
    padding: var(--space-lg) var(--space-md);
  }

  #explore-page h1 {
    font-size: var(--font-size-3xl);
  }

  #graph-container {
    height: 450px;
  }

  #graph-filters {
    justify-content: center;
  }

  .legend-items {
    gap: var(--space-sm);
  }

  .legend-item {
    font-size: var(--font-size-xs);
  }

  .info-panel {
    width: calc(100% - 32px);
    max-width: 360px;
  }

  #explore-page.fullscreen #graph-search {
    width: calc(100% - var(--space-xl));
    left: var(--space-md);
  }

  #explore-page.fullscreen #graph-filters {
    position: relative;
    top: auto;
    left: auto;
    transform: none;
    margin-top: 60px;
    margin-bottom: var(--space-sm);
  }

  #home-page.fullscreen #home-controls {
    width: 100%;
  }

  #home-page.fullscreen #graph-search {
    width: 100%;
  }
}

/* Fullscreen dropdown - show on screens up to 1200px */
@media (max-width: 1200px) {
  #home-page.fullscreen #graph-filters {
    display: none !important;
  }

  #home-page.fullscreen #filter-section .category-dropdown,
  #home-page.fullscreen .category-dropdown {
    display: block !important;
    width: 200px;
    height: 40px;
    padding: 0 var(--space-md);
    padding-right: calc(var(--space-md) + 20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    cursor: pointer;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-sm) center;
  }

  #home-page.fullscreen .category-dropdown:focus {
    outline: none;
    border-color: var(--color-accent-cyan);
  }

  #home-page.fullscreen .category-dropdown option {
    background: #111;
    color: var(--color-text-primary);
  }
}

@media (max-width: 480px) {
  #graph-container {
    height: 350px;
  }

  .graph-filter-button {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
  }

  .info-panel {
    width: calc(100% - 24px);
    max-width: 340px;
  }
}