/* Keystone Design System — Professional Light Theme
   Clean, readable, high-contrast, low cognitive load.
*/

:root {
  color-scheme: light;
  --bg-app: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-input: #FFFFFF;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --border-focus: #2563EB;
  --border-subtle: #F1F5F9;
  --accent-primary: #2563EB;
  --accent-primary-hover: #1D4ED8;
  --accent-secondary: #4F46E5;
  --success: #16A34A;
  --success-bg: #F0FDF4;
  --success-border: #DCFCE7;
  --warning: #D97706;
  --warning-bg: #FFFBEB;
  --warning-border: #FEF3C7;
  --danger: #DC2626;
  --danger-bg: #FEF2F2;
  --danger-border: #FEE2E2;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 14px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

code, pre, .font-mono {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* === Cards === */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  border-color: #CBD5E1;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-body {
  padding: 20px;
}

.card-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  background-color: #FAFAFA;
  border-bottom-left-radius: var(--radius-md);
  border-bottom-right-radius: var(--radius-md);
}

/* === Primary Navigation & Tabs === */
.nav-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.nav-tab-btn:hover {
  color: var(--text-primary);
  background: #F1F5F9;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.nav-tab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  font-weight: 600;
  background: transparent;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #FFFFFF;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--accent-primary-hover);
}

.btn-secondary {
  background-color: #FFFFFF;
  color: var(--text-primary);
  border-color: var(--border);
}

.btn-secondary:hover:not(:disabled) {
  background-color: #F8FAFC;
  border-color: #CBD5E1;
}

.btn-success {
  background-color: var(--success);
  color: #FFFFFF;
}

.btn-success:hover:not(:disabled) {
  background-color: #15803D;
}

.btn-danger {
  background-color: var(--danger);
  color: #FFFFFF;
}

.btn-danger:hover:not(:disabled) {
  background-color: #B91C1C;
}

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-lg {
  padding: 11px 22px;
  font-size: 14px;
  font-weight: 600;
}

/* === Inputs & Selects === */
.form-input, .form-select {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-primary);
  background-color: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus, .form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

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

/* === Badges === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: 9999px;
  border: 1px solid transparent;
}

.badge-blue {
  background-color: #EFF6FF;
  color: #1D4ED8;
  border-color: #DBEAFE;
}

.badge-green {
  background-color: var(--success-bg);
  color: var(--success);
  border-color: var(--success-border);
}

.badge-amber {
  background-color: var(--warning-bg);
  color: var(--warning);
  border-color: var(--warning-border);
}

.badge-red {
  background-color: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger-border);
}

.badge-slate {
  background-color: #F1F5F9;
  color: #475569;
  border-color: #E2E8F0;
}

/* === Reviewer Focus Card === */
.reviewer-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.15s ease;
}

.reviewer-card.primary {
  border-left: 4px solid var(--accent-primary);
}

.reviewer-card.secondary {
  border-left: 4px solid var(--accent-secondary);
}

/* === Score Gauge === */
.score-badge-circle {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  border: 2px solid;
}

.score-badge-circle.high {
  background-color: #F0FDF4;
  border-color: #16A34A;
  color: #15803D;
}

.score-badge-circle.medium {
  background-color: #EFF6FF;
  border-color: #2563EB;
  color: #1D4ED8;
}

.score-badge-circle.low {
  background-color: #FFFBEB;
  border-color: #D97706;
  color: #B45309;
}

/* === Tables === */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 12px;
}

.data-table th {
  background-color: #F8FAFC;
  color: var(--text-secondary);
  font-weight: 600;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 11px 14px;
  border-bottom: 1px solid #F1F5F9;
  color: var(--text-primary);
  vertical-align: middle;
}

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

.data-table tr:hover td {
  background-color: #F8FAFC;
}

/* === Progress Bar === */
.progress-bar-track {
  width: 100%;
  height: 8px;
  background-color: #E2E8F0;
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--accent-primary);
  border-radius: 9999px;
  transition: width 0.3s ease;
}

/* === Toast Notifications === */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 400px;
}

.toast {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: toastFadeIn 0.2s ease-out;
}

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--danger);
}

.toast.info {
  border-left: 4px solid var(--accent-primary);
}

@keyframes toastFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Pulse Status Dot === */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.online {
  background-color: var(--success);
  box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.2);
}

.status-dot.offline {
  background-color: var(--danger);
}

.status-dot.busy {
  background-color: var(--warning);
}

/* === Graph Visualization Container === */
#vis-network-container {
  width: 100%;
  height: 520px;
  background-color: #FAFAFA;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  position: relative;
}

/* === Accessibility: Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* === Repository Coverage Panel === */
.coverage-panel {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.coverage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.coverage-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;
}

.coverage-metric-card {
  padding: 10px 14px;
  background: #F8FAFC;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.coverage-metric-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
}

.coverage-metric-label {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 500;
  line-height: 1.3;
}

.coverage-status-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.status-badge-detailed {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid transparent;
}

/* === Subtabs Navigation === */
.subtab-group {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.subtab-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

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

.subtab-btn.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
  font-weight: 600;
}

/* === Why PRs Callout Card === */
.why-prs-card {
  background: #EFF6FF;
  border: 1px solid #DBEAFE;
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 12px;
  color: #1E40AF;
  line-height: 1.5;
}

.why-prs-card summary {
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #1E3A8A;
}

.why-prs-content {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #BFDBFE;
  color: #1E40AF;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* === Scope Option Cards === */
.scope-option-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: #FFFFFF;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.scope-option-card:hover {
  border-color: #CBD5E1;
  background: #F8FAFC;
}

.scope-option-card.selected {
  border: 2px solid var(--accent-primary);
  background: #EFF6FF;
}

/* === Ingestion Gap Cards === */
.gap-category-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* === Modal Confirmation Dialog === */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
}

.modal-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  max-width: 540px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  animation: toastFadeIn 0.2s ease-out;
}