/**
 * ReleaseLog Viewer v0.1.0
 * https://github.com/grokify/releaselog
 *
 * WCAG 2.2 AA Compliant
 * - Color contrast ratios meet 4.5:1 for normal text, 3:1 for large text
 * - All interactive elements have visible focus indicators
 * - Keyboard navigation fully supported
 * - Screen reader compatible with ARIA labels
 */

/* ============================================================================
   CSS Custom Properties (for theming and consistency)
   ============================================================================ */
.rlv-container {
  --rlv-color-text: #1f2328;
  --rlv-color-text-muted: #59636e;
  --rlv-color-text-disabled: #8b949e;
  --rlv-color-link: #0969da;
  --rlv-color-link-hover: #0550ae;
  --rlv-color-bg: #f6f8fa;
  --rlv-color-bg-white: #ffffff;
  --rlv-color-border: #d1d9e0;
  --rlv-color-border-light: #e1e4e8;
  --rlv-color-focus: #0969da;
  --rlv-color-focus-ring: rgba(9, 105, 218, 0.4);
  --rlv-color-error: #cf222e;
  --rlv-color-error-bg: #ffebe9;
  --rlv-color-success: #1a7f37;
  --rlv-color-success-bg: #dafbe1;
  --rlv-color-warning: #9a6700;
  --rlv-color-accent: #0969da;
  --rlv-color-accent-emphasis: #0550ae;
  --rlv-color-prerelease: #8250df;
  --rlv-border-radius: 6px;
  --rlv-border-radius-lg: 8px;
  --rlv-focus-outline: 2px solid var(--rlv-color-focus);
  --rlv-focus-outline-offset: 2px;
}

/* ============================================================================
   Container
   ============================================================================ */
.rlv-container {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  max-width: 1400px;
  margin: 0 auto;
  padding: 20px;
  background: var(--rlv-color-bg);
  color: var(--rlv-color-text);
  line-height: 1.5;
  box-sizing: border-box;
}

.rlv-container *, .rlv-container *::before, .rlv-container *::after {
  box-sizing: border-box;
}

/* Skip Link (for keyboard users) */
.rlv-skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 1000;
}

.rlv-skip-link:focus {
  position: fixed;
  top: 10px;
  left: 10px;
  width: auto;
  height: auto;
  padding: 12px 24px;
  background: var(--rlv-color-text);
  color: var(--rlv-color-bg-white);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--rlv-border-radius);
  text-decoration: none;
  z-index: 1000;
}

/* Links */
.rlv-container a {
  color: var(--rlv-color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.rlv-container a:hover {
  color: var(--rlv-color-link-hover);
  text-decoration: underline;
}

.rlv-container a:focus {
  outline: var(--rlv-focus-outline);
  outline-offset: var(--rlv-focus-outline-offset);
  border-radius: 2px;
}

/* Visually Hidden (for screen readers) */
.rlv-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================================
   Header
   ============================================================================ */
.rlv-header {
  margin-bottom: 24px;
}

.rlv-title {
  margin: 0 0 8px 0;
  font-size: 28px;
  font-weight: 600;
  color: var(--rlv-color-text);
}

.rlv-subtitle {
  margin: 0;
  color: var(--rlv-color-text-muted);
  font-size: 14px;
}

/* ============================================================================
   URL Bar
   ============================================================================ */
.rlv-url-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  padding: 12px;
  background: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.rlv-url-input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  color: var(--rlv-color-text);
  background: var(--rlv-color-bg-white);
}

.rlv-url-input::placeholder {
  color: var(--rlv-color-text-muted);
}

.rlv-url-input:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

.rlv-url-btn {
  padding: 10px 20px;
  background: var(--rlv-color-accent);
  color: var(--rlv-color-bg-white);
  border: none;
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s;
}

.rlv-url-btn:hover {
  background: var(--rlv-color-accent-emphasis);
}

.rlv-url-btn:focus {
  outline: var(--rlv-focus-outline);
  outline-offset: var(--rlv-focus-outline-offset);
}

/* ============================================================================
   Controls
   ============================================================================ */
.rlv-controls {
  margin-bottom: 16px;
  padding: 12px;
  background: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* Date filter indicator (from heatmap click) */
.rlv-date-filter-active {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  margin-bottom: 12px;
  background: var(--rlv-color-accent);
  color: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
}

.rlv-date-filter-active strong {
  font-weight: 600;
}

.rlv-date-filter-clear {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  margin-left: auto;
  background: rgba(255, 255, 255, 0.2);
  color: var(--rlv-color-bg-white);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--rlv-border-radius);
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}

.rlv-date-filter-clear:hover {
  background: rgba(255, 255, 255, 0.3);
}

.rlv-date-filter-clear:focus {
  outline: 2px solid var(--rlv-color-bg-white);
  outline-offset: 2px;
}

.rlv-stats {
  display: flex;
  gap: 16px;
  font-size: 14px;
  color: var(--rlv-color-text-muted);
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rlv-color-border-light);
}

.rlv-stats strong {
  color: var(--rlv-color-text);
}

.rlv-filters {
  display: flex;
  gap: 8px;
  flex: 1;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
}

.rlv-filters-left {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.rlv-filters-right {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.rlv-search, .rlv-type-filter {
  padding: 8px 12px;
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  color: var(--rlv-color-text);
  background: var(--rlv-color-bg-white);
}

.rlv-search {
  width: 200px;
}

.rlv-type-filter {
  min-width: 120px;
}

.rlv-search:focus, .rlv-type-filter:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

/* Checkbox Labels */
.rlv-checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--rlv-color-text);
  cursor: pointer;
  white-space: nowrap;
  padding: 4px;
  border-radius: var(--rlv-border-radius);
}

.rlv-checkbox-label:hover {
  background: var(--rlv-color-bg);
}

.rlv-checkbox-label:focus-within {
  outline: var(--rlv-focus-outline);
  outline-offset: 0;
}

.rlv-checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--rlv-color-accent);
}

.rlv-checkbox-label input[type="checkbox"]:focus {
  outline: none;
}

/* ============================================================================
   Repository Filter
   ============================================================================ */
.rlv-repo-filter {
  position: relative;
}

.rlv-repo-filter-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: var(--rlv-color-bg-white);
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  color: var(--rlv-color-text);
  cursor: pointer;
  min-width: 180px;
  justify-content: space-between;
}

.rlv-repo-filter-btn:hover {
  border-color: var(--rlv-color-text-muted);
}

.rlv-repo-filter-btn:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

.rlv-repo-filter-btn .rlv-count {
  background: var(--rlv-color-accent);
  color: var(--rlv-color-bg-white);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 500;
}

.rlv-repo-filter-btn svg {
  width: 12px;
  height: 12px;
  color: var(--rlv-color-text-muted);
}

.rlv-repo-filter-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 200;
  width: 320px;
  margin-top: 4px;
  background: var(--rlv-color-bg-white);
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.rlv-repo-filter-panel.show {
  display: block;
}

.rlv-repo-filter-search {
  padding: 8px;
  border-bottom: 1px solid var(--rlv-color-border-light);
}

.rlv-repo-filter-search input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  color: var(--rlv-color-text);
}

.rlv-repo-filter-search input:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

.rlv-repo-filter-actions {
  display: flex;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rlv-color-border-light);
  font-size: 13px;
}

.rlv-repo-filter-actions a {
  cursor: pointer;
  padding: 2px;
  border-radius: 2px;
}

.rlv-repo-filter-actions a:focus {
  outline: var(--rlv-focus-outline);
  outline-offset: 0;
}

.rlv-repo-filter-list {
  max-height: 280px;
  overflow-y: auto;
  padding: 4px 0;
}

.rlv-repo-filter-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.1s;
}

.rlv-repo-filter-item:hover {
  background: var(--rlv-color-bg);
}

.rlv-repo-filter-item:focus-within {
  background: var(--rlv-color-bg);
  outline: 2px solid var(--rlv-color-focus);
  outline-offset: -2px;
}

.rlv-repo-filter-item input {
  width: 16px;
  height: 16px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--rlv-color-accent);
}

.rlv-repo-filter-item input:focus {
  outline: none;
}

/* ============================================================================
   Table
   ============================================================================ */
.rlv-table-wrapper {
  background: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  overflow: hidden;
}

.rlv-table {
  width: 100%;
  border-collapse: collapse;
}

.rlv-table th, .rlv-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--rlv-color-border-light);
}

.rlv-table th {
  background: var(--rlv-color-bg);
  font-weight: 600;
  font-size: 13px;
  color: var(--rlv-color-text);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.rlv-table th:hover {
  background: #eaeef2;
}

.rlv-table th:focus {
  outline: var(--rlv-focus-outline);
  outline-offset: -2px;
}

.rlv-table th.rlv-no-sort {
  cursor: default;
}

.rlv-table th.rlv-no-sort:hover {
  background: var(--rlv-color-bg);
}

.rlv-table th.sorted-asc::after {
  content: ' \25B2';
  font-size: 10px;
  margin-left: 4px;
}

.rlv-table th.sorted-desc::after {
  content: ' \25BC';
  font-size: 10px;
  margin-left: 4px;
}

.rlv-table tbody tr:hover {
  background: var(--rlv-color-bg);
}

.rlv-table tbody tr:focus-within {
  outline: 2px solid var(--rlv-color-focus);
  outline-offset: -2px;
}

.rlv-table tr:last-child td {
  border-bottom: none;
}

.rlv-table td {
  font-size: 14px;
  color: var(--rlv-color-text);
}

.rlv-date {
  white-space: nowrap;
  color: var(--rlv-color-text-muted);
}

.rlv-repo {
  font-weight: 500;
}

.rlv-version {
  display: inline-block;
  padding: 3px 10px;
  background: var(--rlv-color-accent);
  color: var(--rlv-color-bg-white);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.rlv-version.prerelease {
  background: var(--rlv-color-prerelease);
}

.rlv-release-name {
  max-width: 400px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.rlv-type-badge {
  display: inline-block;
  padding: 3px 8px;
  background: #eaeef2;
  color: var(--rlv-color-text);
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.rlv-type-badge.release {
  background: var(--rlv-color-success-bg);
  color: var(--rlv-color-success);
}

.rlv-type-badge.tag {
  background: #f3e8ff;
  color: var(--rlv-color-prerelease);
}

.rlv-empty {
  text-align: center;
  color: var(--rlv-color-text-muted);
  padding: 40px 16px;
}

/* ============================================================================
   Links Dropdown
   ============================================================================ */
.rlv-links-cell {
  position: relative;
}

.rlv-links-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  background: var(--rlv-color-bg);
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--rlv-color-text);
  cursor: pointer;
  transition: all 0.15s;
}

.rlv-links-btn:hover {
  background: #eaeef2;
  border-color: var(--rlv-color-text-muted);
}

.rlv-links-btn:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

.rlv-links-btn svg {
  width: 12px;
  height: 12px;
}

.rlv-links-dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: 100%;
  z-index: 100;
  min-width: 200px;
  margin-top: 4px;
  padding: 4px 0;
  background: var(--rlv-color-bg-white);
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.rlv-links-dropdown.show {
  display: block;
}

.rlv-links-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--rlv-color-text);
  text-decoration: none;
  transition: background 0.15s;
}

.rlv-links-dropdown a:hover {
  background: var(--rlv-color-bg);
  text-decoration: none;
}

.rlv-links-dropdown a:focus {
  outline: 2px solid var(--rlv-color-focus);
  outline-offset: -2px;
  background: var(--rlv-color-bg);
}

.rlv-links-dropdown a svg {
  width: 16px;
  height: 16px;
  color: var(--rlv-color-text-muted);
  flex-shrink: 0;
}

/* Disabled Links - Clear visual distinction */
.rlv-links-dropdown .rlv-disabled {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--rlv-color-text-disabled);
  cursor: not-allowed;
}

.rlv-links-dropdown .rlv-disabled svg {
  width: 16px;
  height: 16px;
  color: var(--rlv-color-text-disabled);
  flex-shrink: 0;
  opacity: 0.5;
}

.rlv-links-dropdown .rlv-disabled > span:not(:first-child) {
  text-decoration: line-through;
  text-decoration-color: var(--rlv-color-text-disabled);
}

.rlv-links-dropdown .rlv-disabled .rlv-not-available {
  margin-left: auto;
  font-size: 11px;
  font-style: italic;
  text-decoration: none;
  opacity: 0.8;
}

.rlv-divider {
  height: 1px;
  margin: 4px 0;
  background: var(--rlv-color-border-light);
}

/* ============================================================================
   Pagination
   ============================================================================ */
.rlv-pagination {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background: var(--rlv-color-bg-white);
  border-top: 1px solid var(--rlv-color-border-light);
  flex-wrap: wrap;
  gap: 12px;
}

.rlv-pagination-info {
  font-size: 14px;
  color: var(--rlv-color-text-muted);
}

.rlv-pagination-buttons {
  display: flex;
  gap: 4px;
}

.rlv-pagination-buttons button {
  padding: 8px 14px;
  border: 1px solid var(--rlv-color-border);
  background: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--rlv-color-text);
  cursor: pointer;
  transition: all 0.2s;
  min-width: 40px;
}

.rlv-pagination-buttons button:hover:not(:disabled) {
  background: var(--rlv-color-bg);
  border-color: var(--rlv-color-text-muted);
}

.rlv-pagination-buttons button:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
  z-index: 1;
  position: relative;
}

.rlv-pagination-buttons button.active {
  background: var(--rlv-color-accent);
  color: var(--rlv-color-bg-white);
  border-color: var(--rlv-color-accent);
}

.rlv-pagination-buttons button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--rlv-color-bg);
}

.rlv-page-size {
  margin-left: auto;
}

.rlv-page-size select,
.rlv-page-size-select {
  padding: 8px 12px;
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  color: var(--rlv-color-text);
  background: var(--rlv-color-bg-white);
  cursor: pointer;
}

.rlv-page-size select:focus,
.rlv-page-size-select:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

/* ============================================================================
   Messages
   ============================================================================ */
.rlv-message {
  padding: 40px;
  text-align: center;
  color: var(--rlv-color-text-muted);
  background: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  font-size: 16px;
}

.rlv-message code {
  padding: 2px 6px;
  background: var(--rlv-color-bg);
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 14px;
}

.rlv-message.error {
  color: var(--rlv-color-error);
  background: var(--rlv-color-error-bg);
}

.rlv-message.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.rlv-message.loading::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--rlv-color-border-light);
  border-top-color: var(--rlv-color-accent);
  border-radius: 50%;
  animation: rlv-spin 0.8s linear infinite;
}

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

/* ============================================================================
   Footer
   ============================================================================ */
.rlv-footer {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--rlv-color-border-light);
  font-size: 13px;
  color: var(--rlv-color-text-muted);
  text-align: center;
}

/* ============================================================================
   Heatmap (cal-heatmap integration)
   ============================================================================ */
.rlv-heatmap-container {
  background: var(--rlv-color-bg-white);
  border-radius: var(--rlv-border-radius-lg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  padding: 16px;
  margin-bottom: 16px;
}

.rlv-heatmap-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.rlv-heatmap-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--rlv-color-text);
}

.rlv-heatmap-nav {
  padding: 6px 12px;
  background: var(--rlv-color-bg);
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 14px;
  font-weight: 500;
  color: var(--rlv-color-text);
  cursor: pointer;
  transition: all 0.15s;
}

.rlv-heatmap-nav:hover {
  background: #eaeef2;
  border-color: var(--rlv-color-text-muted);
}

.rlv-heatmap-nav:focus {
  outline: none;
  border-color: var(--rlv-color-focus);
  box-shadow: 0 0 0 3px var(--rlv-color-focus-ring);
}

.rlv-heatmap-nav:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: var(--rlv-color-bg);
  border-color: var(--rlv-color-border);
}

.rlv-heatmap-nav:disabled:hover {
  background: var(--rlv-color-bg);
  border-color: var(--rlv-color-border);
}

.rlv-heatmap-chart {
  overflow-x: auto;
  padding: 8px 0;
  display: flex;
  justify-content: center;
}

/* Cal-heatmap overrides */
.rlv-heatmap-chart .ch-domain-text {
  font-size: 10px;
  fill: var(--rlv-color-text-muted);
}

.rlv-heatmap-chart .ch-subdomain-bg {
  fill: var(--rlv-color-bg);
}

/* Day labels (Mon, Wed, Fri) */
.rlv-heatmap-chart .ch-plugin-calendar-label-text {
  font-size: 10px;
  fill: var(--rlv-color-text-muted);
}

.rlv-heatmap-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--rlv-color-text-muted);
}

.rlv-heatmap-legend-label {
  margin: 0 4px;
}

.rlv-heatmap-legend-cell {
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: #ebedf0;
}

.rlv-heatmap-legend-cell[data-level="0"] { background: #ebedf0; }
.rlv-heatmap-legend-cell[data-level="1"] { background: #9be9a8; }
.rlv-heatmap-legend-cell[data-level="2"] { background: #40c463; }
.rlv-heatmap-legend-cell[data-level="3"] { background: #30a14e; }
.rlv-heatmap-legend-cell[data-level="4"] { background: #216e39; }

.rlv-heatmap-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.rlv-heatmap-help {
  font-size: 12px;
  color: var(--rlv-color-text-muted);
  text-decoration: none;
}

.rlv-heatmap-help:hover {
  color: var(--rlv-color-link);
  text-decoration: underline;
}

.rlv-heatmap-help:focus {
  outline: var(--rlv-focus-outline);
  outline-offset: 2px;
  border-radius: 2px;
}

.rlv-heatmap-help-tooltip {
  display: none;
  position: relative;
  margin-top: 12px;
  padding: 16px;
  background: var(--rlv-color-bg);
  border: 1px solid var(--rlv-color-border);
  border-radius: var(--rlv-border-radius);
  font-size: 13px;
  line-height: 1.5;
}

.rlv-heatmap-help-tooltip.show {
  display: block;
}

.rlv-heatmap-help-tooltip h4 {
  margin: 0 0 8px 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--rlv-color-text);
}

.rlv-heatmap-help-tooltip p {
  margin: 0 0 12px 0;
  color: var(--rlv-color-text);
}

.rlv-heatmap-help-tooltip ul {
  margin: 0 0 12px 0;
  padding-left: 0;
  list-style: none;
}

.rlv-heatmap-help-tooltip li {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  color: var(--rlv-color-text);
}

.rlv-heatmap-help-tooltip li .rlv-heatmap-legend-cell {
  flex-shrink: 0;
}

.rlv-heatmap-help-tooltip .rlv-heatmap-help-note {
  margin-bottom: 0;
  font-size: 12px;
  font-style: italic;
  color: var(--rlv-color-text-muted);
}

.rlv-heatmap-help-close {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  background: transparent;
  font-size: 18px;
  color: var(--rlv-color-text-muted);
  cursor: pointer;
  border-radius: var(--rlv-border-radius);
}

.rlv-heatmap-help-close:hover {
  color: var(--rlv-color-text);
  background: var(--rlv-color-border-light);
}

.rlv-heatmap-help-close:focus {
  outline: var(--rlv-focus-outline);
  outline-offset: -2px;
}

.rlv-heatmap-stats {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--rlv-color-border-light);
  font-size: 13px;
  color: var(--rlv-color-text-muted);
}

.rlv-heatmap-stats span {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Tooltip styling for cal-heatmap */
#ch-tooltip {
  background: var(--rlv-color-text) !important;
  color: var(--rlv-color-bg-white) !important;
  border-radius: var(--rlv-border-radius) !important;
  padding: 8px 12px !important;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
  font-size: 13px !important;
  line-height: 1.4 !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3) !important;
  max-width: 250px !important;
}

#ch-tooltip * {
  font-family: inherit !important;
}

#ch-tooltip strong {
  font-weight: 600;
}

#ch-tooltip em {
  opacity: 0.8;
}

/* ============================================================================
   High Contrast Mode (prefers-contrast: more)
   ============================================================================ */
@media (prefers-contrast: more) {
  .rlv-container {
    --rlv-color-text: #000000;
    --rlv-color-text-muted: #333333;
    --rlv-color-text-disabled: #666666;
    --rlv-color-border: #000000;
    --rlv-color-border-light: #666666;
    --rlv-color-focus: #0000ee;
  }

  .rlv-container a {
    text-decoration: underline;
  }

  .rlv-links-dropdown .rlv-disabled {
    border: 1px dashed var(--rlv-color-text-disabled);
    margin: 4px;
    border-radius: 4px;
  }
}

/* ============================================================================
   Reduced Motion
   ============================================================================ */
@media (prefers-reduced-motion: reduce) {
  .rlv-container *,
  .rlv-container *::before,
  .rlv-container *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================================
   Print Styles
   ============================================================================ */
@media print {
  .rlv-container {
    background: white;
    box-shadow: none;
  }

  .rlv-url-bar,
  .rlv-controls,
  .rlv-pagination,
  .rlv-links-cell,
  .rlv-footer {
    display: none;
  }

  .rlv-table-wrapper {
    box-shadow: none;
    border: 1px solid #000;
  }

  .rlv-table th,
  .rlv-table td {
    border: 1px solid #000;
  }
}