/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ===== Theme Variables ===== */
:root[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecef;
  --text-primary: #1a1a2e;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --border: #dee2e6;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-subtle: rgba(99, 102, 241, 0.12);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
  --bar-bg: #e9ecef;
  --bar-fill: #6366f1;
  --badge-merged-bg: #d1fae5;
  --badge-merged-text: #065f46;
  --badge-opened-bg: #dbeafe;
  --badge-opened-text: #1e40af;
  --badge-closed-bg: #fee2e2;
  --badge-closed-text: #991b1b;
  --stat-merged-border: #10b981;
  --stat-opened-border: #3b82f6;
  --stat-closed-border: #ef4444;
  --header-bg: #ffffff;
  --toggle-bg: #e9ecef;
  --row-hover: #f1f3f5;
  --badge-purple-bg: #ede9fe;
  --badge-purple-text: #5b21b6;
  --badge-purple-border: #8b5cf6;
}

:root[data-theme="dark"] {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;
  --border: #30363d;
  --accent: #818cf8;
  --accent-hover: #6366f1;
  --accent-subtle: rgba(129, 140, 248, 0.12);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.4);
  --bar-bg: #21262d;
  --bar-fill: #818cf8;
  --badge-merged-bg: #064e3b;
  --badge-merged-text: #6ee7b7;
  --badge-opened-bg: #1e3a5f;
  --badge-opened-text: #93c5fd;
  --badge-closed-bg: #5b1a1a;
  --badge-closed-text: #fca5a5;
  --stat-merged-border: #10b981;
  --stat-opened-border: #3b82f6;
  --stat-closed-border: #ef4444;
  --header-bg: #161b22;
  --toggle-bg: #30363d;
  --row-hover: #1c2128;
  --badge-purple-bg: rgba(139, 92, 246, 0.15);
  --badge-purple-text: #c4b5fd;
  --badge-purple-border: #8b5cf6;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background 0.2s, color 0.2s;
}

/* ===== Header ===== */
.header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-guide {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

.btn-guide:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-export {
  background: var(--accent);
  border: none;
  border-radius: 8px;
  padding: 0.4rem 0.85rem;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
  transition: background 0.2s;
}

.btn-export:hover {
  background: var(--accent-hover);
}

.btn-export:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.theme-toggle {
  background: var(--toggle-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--text-primary);
  transition: background 0.2s, border-color 0.2s;
}

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

/* ===== Container ===== */
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem;
}

/* ===== Loading / Error ===== */
.loading, .error {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.error {
  color: var(--badge-closed-text);
  background: var(--badge-closed-bg);
  border-radius: 8px;
  padding: 1rem 1.5rem;
}

/* ===== Controls ===== */
.controls {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  box-shadow: var(--shadow);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 180px;
}

.filter-group label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  font-weight: 600;
}

.filter-group select {
  appearance: none;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  transition: border-color 0.2s;
}

.filter-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* ===== Search Container ===== */
.search-container {
  position: relative;
}

.search-container input {
  appearance: none;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  width: 100%;
  transition: border-color 0.2s;
}

.search-container input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.search-container input::placeholder {
  color: var(--text-muted);
}

.search-suggestions {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--shadow-lg);
  max-height: 200px;
  overflow-y: auto;
  margin-top: 2px;
}

.search-suggestion {
  padding: 0.75rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transition: background-color 0.15s;
}

.search-suggestion:last-child {
  border-bottom: none;
}

.search-suggestion:hover,
.search-suggestion.highlighted {
  background: var(--row-hover);
}

.search-suggestion-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  flex-shrink: 0;
}

.search-suggestion-info {
  flex: 1;
  min-width: 0;
}

.search-suggestion-name {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.search-suggestion-username {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: 'Monaco', 'Consolas', monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.filter-meta {
  margin-left: auto;
  display: flex;
  align-items: flex-end;
}

.generated-at {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ===== Timeline ===== */
.timeline-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.timeline-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}

.granularity-toggle {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.gran-btn {
  background: transparent;
  border: none;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.gran-btn:not(:last-child) {
  border-right: 1px solid var(--border);
}

.gran-btn:hover {
  color: var(--text-primary);
}

.gran-btn.active {
  background: var(--accent);
  color: #fff;
}

.custom-range-picker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}
.custom-range-picker label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.custom-range-picker input[type="date"] {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
}
.custom-range-apply {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}

.timeline-chart-wrap {
  position: relative;
  height: 220px;
}

/* ===== Aggregate Section ===== */
.aggregate-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow);
}

.leaderboard-period {
  padding: 0.6rem 1.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.aggregate-cards {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  background: var(--border);
  gap: 1px;
}

.aggregate-card {
  background: var(--bg-secondary);
  padding: 1rem 0.75rem;
  text-align: center;
  position: relative;
  transition: background 0.15s, transform 0.15s;
  cursor: pointer;
}

.aggregate-card:hover {
  background: var(--accent-subtle);
  transform: translateY(-2px);
}

.aggregate-card:hover .aggregate-card-value {
  transform: scale(1.05);
}

.aggregate-tooltip {
  position: fixed;
  z-index: 1000;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.4;
  white-space: normal;
  width: max-content;
  max-width: 220px;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.15s, transform 0.15s;
}

.aggregate-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}

.aggregate-card-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  transition: transform 0.15s;
}

.aggregate-card-trend {
  font-size: 0.7rem;
  font-weight: 600;
  margin-top: 0.15rem;
}

.trend-up {
  color: var(--stat-merged-border);
}

.trend-down {
  color: var(--stat-closed-border);
}

.trend-flat {
  color: var(--text-muted);
}

.aggregate-card-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-top: 0.25rem;
  font-weight: 600;
}

/* ===== Contributors Section ===== */
.contributors-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.contributor-list-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: transparent;
  border: none;
  padding: 0.85rem 1.25rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s;
}

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

.toggle-icon {
  font-size: 0.7rem;
  transition: transform 0.2s;
}

.contributor-list-toggle[aria-expanded="true"] .toggle-icon {
  transform: rotate(90deg);
}

.contributor-list-body {
  border-top: 1px solid var(--border);
}

.contributor-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  transition: background 0.1s;
  cursor: pointer;
}

.contributor-row:first-child {
  border-top: none;
}

.contributor-row:hover {
  background: var(--row-hover);
}

.contributor-activity {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* Contributor info (shared between contributor list and detail) */
.lb-contributor {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.lb-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.lb-avatar-placeholder {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.lb-name-block {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.lb-name {
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lb-username {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* Mini badges (activity indicators) */
.mini-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  cursor: default;
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
}

.mini-badge:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  filter: brightness(1.1);
}

.mini-badge-merged {
  background: var(--badge-merged-bg);
  color: var(--badge-merged-text);
}

.mini-badge-opened {
  background: var(--badge-opened-bg);
  color: var(--badge-opened-text);
}

.mini-badge-closed {
  background: var(--badge-closed-bg);
  color: var(--badge-closed-text);
}

.mini-badge-ai {
  background: var(--badge-purple-bg);
  color: var(--badge-purple-text);
}

.mini-badge-collab-purple {
  background: var(--badge-purple-bg);
  color: var(--badge-purple-text);
}

/* ===== Settings Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 440px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
  padding: 0 0.25rem;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1rem 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.setting-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  flex: 1;
}

.setting-input {
  width: 5.5rem;
  padding: 0.35rem 0.5rem;
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  text-align: right;
}

.setting-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.setting-checkbox {
  width: auto;
  padding: 0;
  margin: 0;
  cursor: pointer;
  accent-color: var(--accent);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border);
}

/* ===== Contributor Detail Modal ===== */
.detail-modal {
  max-width: 900px;
  max-height: 90vh;
}

.detail-header-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.detail-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.detail-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border);
}

.detail-section {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}

.detail-section-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.detail-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.detail-metric-card {
  text-align: center;
  padding: 0.75rem 0.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.detail-metric-value {
  font-size: 1.4rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.detail-metric-label {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

.detail-timeline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.detail-timeline-header .detail-section-title {
  margin-bottom: 0;
}

.detail-period-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.detail-period-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.detail-period-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 1.1rem;
  line-height: 1;
  font-weight: 700;
  transition: background 0.15s;
}

.detail-period-btn:hover:not(:disabled) {
  background: var(--accent-subtle);
}

.detail-period-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.detail-period-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  min-width: 100px;
  text-align: center;
  white-space: nowrap;
}

.detail-chart-card {
  margin-bottom: 1.25rem;
}

.detail-chart-card:last-child {
  margin-bottom: 0;
}

.detail-chart-card-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.detail-chart-card-wrap {
  position: relative;
  height: 160px;
}

.detail-repo-header,
.detail-repo-row {
  display: grid;
  grid-template-columns: 1fr 4.5rem 4.5rem 5.5rem 5.5rem;
  gap: 0.5rem;
  align-items: center;
  padding: 0.4rem 0;
  font-size: 0.8rem;
}

.detail-repo-header {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 0.25rem;
}

.detail-repo-row {
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
}

.detail-repo-row:last-child {
  border-bottom: none;
}

.detail-repo-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.detail-repo-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.detail-repo-add {
  color: var(--stat-merged-border);
}

.detail-repo-del {
  color: var(--stat-closed-border);
}

.detail-mr-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.detail-mr-item:last-child {
  border-bottom: none;
}

.detail-mr-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.detail-mr-dot-merged { background: var(--stat-merged-border); }
.detail-mr-dot-opened { background: var(--stat-opened-border); }
.detail-mr-dot-closed { background: var(--stat-closed-border); }

.detail-mr-title {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.detail-mr-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.detail-mr-title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.detail-mr-repo {
  font-size: 0.7rem;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.detail-mr-ai {
  font-size: 0.75rem;
  flex-shrink: 0;
  cursor: default;
}

.detail-mr-date {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ===== Collaboration Rows ===== */
.detail-collab-row {
  display: grid;
  grid-template-columns: 24px 1fr auto 3rem;
  gap: 0.6rem;
  align-items: center;
  padding: 0.45rem 0;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.detail-collab-row:last-child {
  border-bottom: none;
}

.detail-collab-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.detail-collab-avatar-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.detail-collab-name {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.detail-collab-display-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.detail-collab-username {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.detail-collab-badges {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.detail-collab-total {
  text-align: right;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

/* ===== Metric Drill-Down Modal ===== */
.metric-drilldown-modal {
  max-width: 800px;
  max-height: 90vh;
}

.drilldown-section {
  margin-bottom: 1.25rem;
}

.drilldown-section:last-child {
  margin-bottom: 0;
}

.drilldown-section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.drilldown-distribution {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.drilldown-dist-item {
  text-align: center;
  padding: 0.6rem 0.4rem;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.drilldown-dist-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.drilldown-dist-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 0.1rem;
}

.drilldown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.drilldown-table th,
.drilldown-table td {
  padding: 0.45rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.drilldown-table th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  font-weight: 700;
  background: var(--bg-primary);
}

.drilldown-table td {
  color: var(--text-primary);
}

.drilldown-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

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

.drilldown-mr-list {
  max-height: 300px;
  overflow-y: auto;
}

.drilldown-mr-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.drilldown-mr-item:last-child {
  border-bottom: none;
}

.drilldown-mr-title {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.drilldown-mr-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.drilldown-mr-title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.drilldown-mr-meta {
  font-size: 0.7rem;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.drilldown-show-more {
  display: block;
  width: 100%;
  padding: 0.5rem;
  margin-top: 0.5rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s, color 0.15s;
}

.drilldown-show-more:hover {
  background: var(--accent-subtle);
  color: var(--accent);
}

.drilldown-chart-wrap {
  position: relative;
  height: 160px;
  margin-bottom: 0.75rem;
}

.drilldown-summary {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.5rem 0;
  line-height: 1.6;
}

.drilldown-ratio-bar {
  display: flex;
  height: 24px;
  border-radius: 4px;
  overflow: hidden;
  margin: 0.5rem 0;
}

.drilldown-ratio-adds {
  background: var(--stat-merged-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
  min-width: 30px;
}

.drilldown-ratio-dels {
  background: var(--stat-closed-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
  min-width: 30px;
}

@media (max-width: 768px) {
  .metric-drilldown-modal {
    max-width: 95vw;
  }

  .drilldown-distribution {
    grid-template-columns: repeat(3, 1fr);
  }

  .drilldown-table {
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .drilldown-distribution {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}

.empty-state p {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.empty-state small {
  color: var(--text-muted);
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  box-shadow: var(--shadow);
}

.footer-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1.5rem;
  text-align: center;
}

.footer-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0;
}

.footer-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  .controls {
    flex-direction: column;
    padding: 1rem;
  }

  .filter-group {
    min-width: 100%;
  }

  .filter-meta {
    margin-left: 0;
  }

  .aggregate-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  .contributor-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .contributor-activity {
    justify-content: flex-start;
  }

  .detail-modal {
    max-width: 95vw;
  }

  .detail-metrics-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }

  .detail-repo-header,
  .detail-repo-row {
    grid-template-columns: 1fr 3.5rem 3.5rem 4.5rem 4.5rem;
    font-size: 0.7rem;
  }

  .detail-mr-item {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .header-content {
    padding: 0.5rem 1rem;
  }

  .header-title {
    font-size: 1rem;
  }

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