/* ==========================================================================
   Heatmap Viewer - Component-Specific CSS

   DEPENDENCY: Requires _shared_assets/base.css to be loaded first
   This file extends the shared foundation with heatmap-specific styles.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Layout Overrides (Heatmap-specific)
   -------------------------------------------------------------------------- */

.app-layout {
  min-height: 100vh;
}

/* Sticky top bar for heatmap views */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
}

/* --------------------------------------------------------------------------
   Main Content Area
   -------------------------------------------------------------------------- */

.main-content {
  flex: 1;
  padding: 24px 3%;
  width: 100%;
  max-width: 100%;
}

/* --------------------------------------------------------------------------
   Stats Summary Cards - Enhanced with Icons & Animations
   -------------------------------------------------------------------------- */

.stats-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-primary);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  transition: all var(--transition-fast);
  animation: slideUp 0.5s ease-out backwards;
  animation-delay: calc(var(--i, 0) * 0.08s);
  position: relative;
  overflow: hidden;
}

.stat-card:nth-child(1) { --i: 0; --card-color: 55, 118, 171; }
.stat-card:nth-child(2) { --i: 1; --card-color: 40, 167, 69; }
.stat-card:nth-child(3) { --i: 2; --card-color: 255, 193, 7; }
.stat-card:nth-child(4) { --i: 3; --card-color: 111, 66, 193; }
.stat-card:nth-child(5) { --i: 4; --card-color: 220, 53, 69; }
.stat-card:nth-child(6) { --i: 5; --card-color: 23, 162, 184; }

.stat-card:hover {
  border-color: rgba(var(--card-color), 0.6);
  background: linear-gradient(135deg, rgba(var(--card-color), 0.08) 0%, var(--bg-primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(var(--card-color), 0.15);
}

.stat-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: linear-gradient(135deg, rgba(var(--card-color), 0.15) 0%, rgba(var(--card-color), 0.05) 100%);
  border: 1px solid rgba(var(--card-color), 0.2);
  border-radius: 10px;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.stat-card:hover .stat-icon {
  transform: scale(1.05) rotate(-2deg);
  background: linear-gradient(135deg, rgba(var(--card-color), 0.25) 0%, rgba(var(--card-color), 0.1) 100%);
}

.stat-data {
  flex: 1;
  min-width: 0;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.35em;
  font-weight: 800;
  color: rgb(var(--card-color));
  display: block;
  line-height: 1.1;
  letter-spacing: -0.3px;
}

.stat-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 2px;
}

/* Sparkline decoration for stats */
.stat-sparkline {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30px;
  opacity: 0.1;
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(var(--card-color), 0.3) 100%
  );
  pointer-events: none;
}

/* --------------------------------------------------------------------------
   Rate Cards (Error Rate, Missed Samples) with Progress Bars
   -------------------------------------------------------------------------- */

.rate-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-primary);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  transition: all var(--transition-fast);
  animation: slideUp 0.5s ease-out backwards;
  position: relative;
  overflow: hidden;
}

.rate-card:nth-child(5) { animation-delay: 0.32s; --rate-color: 220, 53, 69; }
.rate-card:nth-child(6) { animation-delay: 0.40s; --rate-color: 255, 152, 0; }

.rate-card:hover {
  border-color: rgba(var(--rate-color), 0.5);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(var(--rate-color), 0.15);
}

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

.rate-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rate-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  background: linear-gradient(135deg, rgba(var(--rate-color), 0.15) 0%, rgba(var(--rate-color), 0.05) 100%);
  border: 1px solid rgba(var(--rate-color), 0.2);
  border-radius: 10px;
  flex-shrink: 0;
}

.rate-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.rate-value {
  font-family: var(--font-mono);
  font-size: 1.4em;
  font-weight: 800;
  color: rgb(var(--rate-color));
}

.rate-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.rate-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.8s ease-out;
  position: relative;
  overflow: hidden;
}

.rate-fill.error {
  background: linear-gradient(90deg, #dc3545 0%, #ff6b6b 100%);
}

.rate-fill.warning {
  background: linear-gradient(90deg, #ff9800 0%, #ffc107 100%);
}

.rate-fill.good {
  background: linear-gradient(90deg, #28a745 0%, #20c997 100%);
}

/* Shimmer animation on rate bars */
.rate-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  animation: shimmer 2.5s ease-in-out infinite;
}

/* --------------------------------------------------------------------------
   Section Headers
   -------------------------------------------------------------------------- */

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--python-gold);
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  flex: 1;
}

/* --------------------------------------------------------------------------
   Filter Controls
   -------------------------------------------------------------------------- */

.filter-controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}

.control-btn {
  padding: 8px 16px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.control-btn:hover {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

/* --------------------------------------------------------------------------
   Type Sections (stdlib, project, etc)
   -------------------------------------------------------------------------- */

.type-section {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 12px;
}

.type-header {
  padding: 12px 16px;
  background: var(--header-gradient);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
  transition: all var(--transition-fast);
  font-weight: 600;
}

.type-header:hover {
  opacity: 0.95;
}

.type-icon {
  font-size: 12px;
  transition: transform var(--transition-fast);
  min-width: 12px;
}

.type-title {
  font-size: 14px;
  flex: 1;
}

.type-stats {
  font-size: 12px;
  opacity: 0.9;
  background: rgba(255, 255, 255, 0.15);
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.type-content {
  padding: 12px;
}

/* --------------------------------------------------------------------------
   Folder Nodes (hierarchical structure)
   -------------------------------------------------------------------------- */

.folder-node {
  margin-bottom: 6px;
}

.folder-header {
  padding: 8px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  user-select: none;
  transition: all var(--transition-fast);
}

.folder-header:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}

.folder-icon {
  font-size: 10px;
  color: var(--accent);
  transition: transform var(--transition-fast);
  min-width: 12px;
}

.folder-name {
  flex: 1;
  font-weight: 500;
  color: var(--text-primary);
  font-size: 13px;
}

.folder-stats {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: var(--font-mono);
}

.folder-content {
  padding-left: 20px;
  margin-top: 6px;
}

/* --------------------------------------------------------------------------
   File Items
   -------------------------------------------------------------------------- */

.files-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

.file-item:hover {
  background: var(--bg-secondary);
  border-color: var(--border);
}

.file-item .file-link {
  flex: 1;
  min-width: 0;
  font-size: 13px;
}

.file-samples {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
  white-space: nowrap;
  width: 130px;
  flex-shrink: 0;
  text-align: right;
  font-family: var(--font-mono);
}

.heatmap-bar-container {
  width: 120px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.heatmap-bar {
  flex-shrink: 0;
  border-radius: 2px;
}

/* Links */
.file-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.file-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   Module Badges
   -------------------------------------------------------------------------- */

.module-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.badge-stdlib {
  background: rgba(40, 167, 69, 0.15);
  color: #28a745;
}

.badge-site-packages {
  background: rgba(0, 123, 255, 0.15);
  color: #007bff;
}

.badge-project {
  background: rgba(255, 193, 7, 0.2);
  color: #d39e00;
}

.badge-other {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

[data-theme="dark"] .badge-stdlib {
  background: rgba(40, 167, 69, 0.25);
  color: #5dd879;
}

[data-theme="dark"] .badge-site-packages {
  background: rgba(88, 166, 255, 0.25);
  color: #79b8ff;
}

[data-theme="dark"] .badge-project {
  background: rgba(255, 212, 59, 0.25);
  color: #ffd43b;
}

/* ==========================================================================
   FILE VIEW STYLES (Code Display)
   ========================================================================== */

.code-view {
  font-family: var(--font-mono);
  min-height: 100vh;
}

/* Code Header (Top Bar for file view) */
.code-header {
  height: var(--topbar-height);
  background: var(--header-gradient);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 16px;
  box-shadow: 0 2px 10px rgba(55, 118, 171, 0.25);
  border-bottom: 2px solid var(--python-gold);
  position: sticky;
  top: 0;
  z-index: 100;
}

.code-header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 94%;
  max-width: 100%;
  margin: 0 auto;
}

.code-header h1 {
  font-size: 14px;
  font-weight: 600;
  color: white;
  margin: 0;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* File Stats Bar */
.file-stats {
  background: var(--bg-secondary);
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

.file-stats .stats-grid {
  width: 94%;
  max-width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.stat-item {
  background: var(--bg-primary);
  padding: 12px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.stat-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}

.stat-item .stat-value {
  font-size: 1.4em;
  font-weight: 700;
  color: var(--accent);
}

.stat-item .stat-label {
  color: var(--text-muted);
  font-size: 10px;
  margin-top: 2px;
}

/* Legend */
.legend {
  background: var(--bg-secondary);
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
}

.legend-content {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: nowrap;
}

.legend-separator {
  width: 1px;
  height: 24px;
  background: var(--border);
  flex-shrink: 0;
}

.legend-title {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-sans);
  flex-shrink: 0;
}

.legend-gradient {
  width: 150px;
  flex-shrink: 0;
  height: 20px;
  background: linear-gradient(90deg,
    var(--bg-tertiary) 0%,
    var(--heat-2) 25%,
    var(--heat-4) 50%,
    var(--heat-6) 75%,
    var(--heat-8) 100%
  );
  border-radius: 4px;
  border: 1px solid var(--border);
}

.legend-labels {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  flex-shrink: 0;
}

/* Legend Controls Group - wraps toggles and bytecode button together */
.legend-controls {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
  margin-left: auto;
}

/* Heatmap-Specific Toggle Overrides */
#toggle-color-mode .toggle-track.on {
  background: #8e44ad;
  border-color: #8e44ad;
  box-shadow: 0 0 8px rgba(142, 68, 173, 0.3);
}

#toggle-cold .toggle-track.on {
  background: #e67e22;
  border-color: #e67e22;
  box-shadow: 0 0 8px rgba(230, 126, 34, 0.3);
}

/* Code Container */
.code-container {
  width: 94%;
  max-width: 100%;
  margin: 16px auto;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px 8px 8px 8px;
  box-shadow: var(--shadow-sm);
  /* Allow horizontal scroll for long lines, but don't clip sticky header */
}

/* Code Header Row */
.code-header-row {
  position: sticky;
  top: var(--topbar-height);
  z-index: 50;
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 2px solid var(--border);
  font-weight: 700;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: 8px 8px 0 0;
}

.header-line-number {
  flex-shrink: 0;
  width: 60px;
  padding: 8px 10px;
  text-align: right;
  border-right: 1px solid var(--border);
}

.header-samples-self,
.header-samples-cumulative {
  flex-shrink: 0;
  width: 90px;
  padding: 8px 10px;
  text-align: right;
  border-right: 1px solid var(--border);
}

.header-samples-self {
  color: var(--heat-8);
}

.header-samples-cumulative {
  color: var(--accent);
}

.header-content {
  flex: 1;
  padding: 8px 15px;
}

/* Code Lines */
.code-line {
  position: relative;
  display: flex;
  min-height: 20px;
  line-height: 20px;
  font-size: 13px;
  transition: background var(--transition-fast);
  scroll-margin-top: calc(var(--topbar-height) + 50px);
}

.code-line:hover {
  filter: brightness(0.97);
}

[data-theme="dark"] .code-line:hover {
  filter: brightness(1.1);
}

.line-number {
  flex-shrink: 0;
  width: 60px;
  padding: 0 10px;
  text-align: right;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  user-select: none;
  transition: all var(--transition-fast);
}

.line-number:hover {
  background: var(--accent);
  color: white;
  cursor: pointer;
}

.line-samples-self,
.line-samples-cumulative {
  flex-shrink: 0;
  width: 90px;
  padding: 0 10px;
  text-align: right;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  font-weight: 600;
  user-select: none;
  font-size: 12px;
}

.line-samples-self {
  color: var(--heat-8);
}

.line-samples-cumulative {
  color: var(--accent);
}

.line-content {
  flex: 1;
  padding: 0 15px;
  white-space: pre;
  overflow-x: auto;
}

/* Scrollbar Styling */
.line-content::-webkit-scrollbar {
  height: 6px;
}

.line-content::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.line-content::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Navigation Buttons */
.line-nav-buttons {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-btn {
  padding: 2px 6px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: var(--bg-primary);
  color: var(--accent);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  line-height: 1;
}

.nav-btn:hover:not(:disabled) {
  background: var(--accent);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.nav-btn:active:not(:disabled) {
  transform: translateY(0);
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-color: var(--border);
}

.nav-btn.caller {
  color: var(--nav-caller);
  border-color: var(--nav-caller);
}

.nav-btn.callee {
  color: var(--nav-callee);
  border-color: var(--nav-callee);
}

.nav-btn.caller:hover:not(:disabled) {
  background: var(--nav-caller-hover);
  color: white;
}

.nav-btn.callee:hover:not(:disabled) {
  background: var(--nav-callee-hover);
  color: white;
}

/* Highlighted target line */
.code-line:target {
  animation: highlight-line 2s ease-out;
}

@keyframes highlight-line {
  0% {
    background: rgba(255, 212, 59, 0.6) !important;
    outline: 3px solid var(--python-gold);
    outline-offset: -3px;
  }
  50% {
    background: rgba(255, 212, 59, 0.5) !important;
    outline: 3px solid var(--python-gold);
    outline-offset: -3px;
  }
  100% {
    outline: 3px solid transparent;
    outline-offset: -3px;
  }
}

/* Popup menu for multiple callees */
.callee-menu {
  position: absolute;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 8px;
  z-index: 1000;
  min-width: 250px;
  max-width: 400px;
  max-height: 300px;
  overflow-y: auto;
}

.callee-menu-header {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-family: var(--font-sans);
}

.callee-menu-item {
  padding: 8px;
  margin: 4px 0;
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.callee-menu-item:hover {
  background: var(--bg-secondary);
}

.callee-menu-func {
  font-weight: 500;
  color: var(--accent);
  font-size: 12px;
}

.callee-menu-file {
  font-size: 11px;
  color: var(--text-muted);
}

.count-badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
  margin-left: 6px;
}

/* Callee menu scrollbar */
.callee-menu::-webkit-scrollbar {
  width: 6px;
}

.callee-menu::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 3px;
}

.callee-menu::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* --------------------------------------------------------------------------
   Scroll Minimap Marker
   -------------------------------------------------------------------------- */

#scroll_marker {
  position: fixed;
  z-index: 1000;
  right: 0;
  top: 0;
  width: 12px;
  height: 100%;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  pointer-events: none;
}

#scroll_marker .marker {
  position: absolute;
  min-height: 3px;
  width: 100%;
  pointer-events: none;
}

#scroll_marker .marker.cold {
  background: var(--heat-1);
}

#scroll_marker .marker.cool {
  background: var(--heat-2);
}

#scroll_marker .marker.mild {
  background: var(--heat-3);
}

#scroll_marker .marker.warm {
  background: var(--heat-4);
}

#scroll_marker .marker.hot {
  background: var(--heat-5);
}

#scroll_marker .marker.very-hot {
  background: var(--heat-6);
}

#scroll_marker .marker.intense {
  background: var(--heat-7);
}

#scroll_marker .marker.extreme {
  background: var(--heat-8);
}

/* --------------------------------------------------------------------------
   Responsive (Heatmap-specific)
   -------------------------------------------------------------------------- */

@media (max-width: 1100px) {
  .stats-summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .legend-content {
    flex-wrap: wrap;
    justify-content: center;
  }

  .legend-controls {
    margin-left: 0;
  }
}

@media (max-width: 900px) {
  .main-content {
    padding: 16px;
  }
}

@media (max-width: 600px) {
  .stats-summary {
    grid-template-columns: 1fr;
  }

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

  .legend-content {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .legend-gradient {
    width: 100%;
    max-width: none;
  }

  .legend-separator {
    width: 80%;
    height: 1px;
  }

  .legend-controls {
    flex-direction: column;
    gap: 12px;
  }

  .legend-controls .toggle-switch {
    justify-content: center;
  }

  .legend-controls .toggle-switch .toggle-label:first-child {
    width: 70px;
    text-align: right;
  }

  .legend-controls .toggle-switch .toggle-label:last-child {
    width: 90px;
    text-align: left;
  }

  /* Compact code columns on small screens */
  .header-line-number,
  .line-number {
    width: 40px;
  }

  .header-samples-self,
  .header-samples-cumulative,
  .line-samples-self,
  .line-samples-cumulative {
    width: 55px;
    font-size: 10px;
  }

  /* Adjust padding - headers need vertical, data rows don't */
  .header-line-number,
  .header-samples-self,
  .header-samples-cumulative {
    padding: 8px 4px;
  }

  .line-number,
  .line-samples-self,
  .line-samples-cumulative {
    padding: 0 4px;
  }
}

.bytecode-toggle {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  padding: 0;
  margin: 0 4px;
  border: none;
  background: transparent;
  color: var(--code-accent);
  cursor: pointer;
  font-size: 10px;
  transition: transform var(--transition-fast), color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.bytecode-toggle:hover {
  color: var(--accent);
}

.bytecode-spacer {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin: 0 4px;
}

.bytecode-panel {
  margin-left: 90px;
  padding: 8px 15px;
  background: var(--bg-secondary);
  border-left: 3px solid var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: 4px;
}

/* Specialization summary bar */
.bytecode-spec-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  margin-bottom: 10px;
  border-radius: var(--radius-sm);
  background: rgba(100, 100, 100, 0.1);
}

.bytecode-spec-summary .spec-pct {
  font-size: 1.4em;
  font-weight: 700;
}

.bytecode-spec-summary .spec-label {
  font-weight: 500;
  text-transform: uppercase;
  font-size: 0.85em;
  letter-spacing: 0.5px;
}

.bytecode-spec-summary .spec-detail {
  color: var(--text-secondary);
  font-size: 0.9em;
  margin-left: auto;
}

.bytecode-spec-summary.high {
  background: var(--spec-high-bg);
  border-left: 3px solid var(--spec-high);
}
.bytecode-spec-summary.high .spec-pct,
.bytecode-spec-summary.high .spec-label {
  color: var(--spec-high-text);
}

.bytecode-spec-summary.medium {
  background: var(--spec-medium-bg);
  border-left: 3px solid var(--spec-medium);
}
.bytecode-spec-summary.medium .spec-pct,
.bytecode-spec-summary.medium .spec-label {
  color: var(--spec-medium-text);
}

.bytecode-spec-summary.low {
  background: var(--spec-low-bg);
  border-left: 3px solid var(--spec-low);
}
.bytecode-spec-summary.low .spec-pct,
.bytecode-spec-summary.low .spec-label {
  color: var(--spec-low-text);
}

.bytecode-header {
  display: grid;
  grid-template-columns: 1fr 80px 80px;
  gap: 12px;
  padding: 4px 8px;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--code-border);
  margin-bottom: 4px;
}

.bytecode-expand-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.bytecode-expand-all:hover,
.bytecode-expand-all.expanded {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.bytecode-expand-all .expand-icon {
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.bytecode-expand-all.expanded .expand-icon {
  transform: rotate(90deg);
}

/* ========================================
   INSTRUCTION SPAN HIGHLIGHTING
   (triggered only from bytecode panel hover)
   ======================================== */

/* Highlight from bytecode panel hover */
.instr-span.highlight-from-bytecode {
  outline: 3px solid #ff6b6b !important;
  background-color: rgba(255, 107, 107, 0.4) !important;
  border-radius: 2px;
}

/* Bytecode instruction row */
.bytecode-instruction {
  display: grid;
  grid-template-columns: 1fr 80px 80px;
  gap: 12px;
  align-items: center;
  padding: 4px 8px;
  margin: 2px 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.bytecode-instruction:hover,
.bytecode-instruction.highlight {
  background-color: rgba(55, 118, 171, 0.15);
}

.bytecode-instruction[data-locations] {
  cursor: pointer;
}

.bytecode-instruction[data-locations]:hover {
  background-color: rgba(255, 107, 107, 0.2);
}

.bytecode-opname {
  font-weight: 600;
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bytecode-opname.specialized {
  color: #2e7d32;
}

[data-theme="dark"] .bytecode-opname.specialized {
  color: #81c784;
}

.bytecode-opname .base-op {
  color: var(--code-text-muted);
  font-weight: normal;
  font-size: 0.9em;
  margin-left: 4px;
}

.bytecode-samples {
  text-align: right;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-mono);
}

.bytecode-samples.hot {
  color: #ff6b6b;
}

.bytecode-heatbar {
  width: 60px;
  height: 12px;
  background: var(--bg-secondary);
  border-radius: 2px;
  overflow: hidden;
  border: 1px solid var(--code-border);
}

.bytecode-heatbar-fill {
  height: 100%;
  background: linear-gradient(90deg, #00d4ff 0%, #ff6b00 100%);
}

.specialization-badge {
  display: inline-block;
  padding: 1px 6px;
  font-size: 0.75em;
  background: #e8f5e9;
  color: #2e7d32;
  border-radius: 3px;
  margin-left: 6px;
  font-weight: 600;
}

[data-theme="dark"] .specialization-badge {
  background: rgba(129, 199, 132, 0.2);
  color: #81c784;
}

.bytecode-empty {
  color: var(--code-text-muted);
  font-style: italic;
  padding: 8px;
}

.bytecode-error {
  color: #d32f2f;
  font-style: italic;
  padding: 8px;
}

/* ========================================
   SPAN TOOLTIPS
   ======================================== */

.span-tooltip {
  position: absolute;
  z-index: 10000;
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  font-family: var(--font-sans);
  font-size: 12px;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  min-width: 160px;
  max-width: 300px;
}

.span-tooltip::after {
  content: '';
  position: absolute;
  bottom: -7px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 7px 7px 0;
  border-style: solid;
  border-color: var(--bg-primary) transparent transparent;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.1));
}

.span-tooltip-header {
  font-weight: 600;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.span-tooltip-header.hot {
  color: #e65100;
}

.span-tooltip-header.warm {
  color: #f59e0b;
}

.span-tooltip-header.cold {
  color: var(--text-muted);
}

.span-tooltip-row {
  display: flex;
  justify-content: space-between;
  margin: 4px 0;
  gap: 16px;
}

.span-tooltip-label {
  color: var(--text-secondary);
}

.span-tooltip-value {
  font-weight: 600;
  text-align: right;
  color: var(--text-primary);
}

.span-tooltip-value.highlight {
  color: var(--accent);
}

.span-tooltip-section {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 11px;
  margin-top: 8px;
  margin-bottom: 4px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}

.span-tooltip-opcode {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
  background: var(--bg-secondary);
  padding: 3px 8px;
  margin: 2px 0;
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--accent);
}