/* Modern CSS Design System for Search AI Capacity & Portfolio Command Center v2 */
:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1f2937;
  --bg-card: rgba(17, 24, 39, 0.88);
  --bg-card-hover: rgba(31, 41, 55, 0.95);
  --border-color: #374151;
  --border-light: rgba(255, 255, 255, 0.08);
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-blue: #38bdf8;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-emerald: #059669;
  --accent-purple: #c084fc;
  --accent-amber: #fbbf24;
  --accent-rose: #f43f5e;
  --accent-indigo: #818cf8;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.95);
  --bg-card-hover: #ffffff;
  --border-color: #e2e8f0;
  --border-light: rgba(0, 0, 0, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --shadow-sm: 0 1px 3px 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, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

.dashboard-container {
  max-width: 1560px;
  margin: 0 auto;
  padding: 1.5rem 2rem 4rem;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.5rem 0 1.75rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2rem;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.header-left h1 {
  font-size: 1.95rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.header-left p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 0.35rem;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.tag.primary {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  border-color: rgba(56, 189, 248, 0.3);
}

.tag.purple {
  background: rgba(192, 132, 252, 0.15);
  color: var(--accent-purple);
  border-color: rgba(192, 132, 252, 0.3);
}

.tag.success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border-color: rgba(16, 185, 129, 0.3);
}

.tag.warning {
  background: rgba(251, 191, 36, 0.15);
  color: var(--accent-amber);
  border-color: rgba(251, 191, 36, 0.3);
}

.tag.danger {
  background: rgba(244, 63, 94, 0.15);
  color: var(--accent-rose);
  border-color: rgba(244, 63, 94, 0.3);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
}

.btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--text-secondary);
}

.btn.primary {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #ffffff;
  border: none;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.btn.primary:hover {
  background: linear-gradient(135deg, #0369a1 0%, #1d4ed8 100%);
}

/* KPI Ribbon */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-light);
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-blue);
}

.kpi-card.purple::before { background: var(--accent-purple); }
.kpi-card.green::before { background: var(--accent-green); }
.kpi-card.amber::before { background: var(--accent-amber); }
.kpi-card.rose::before { background: var(--accent-rose); }
.kpi-card.indigo::before { background: var(--accent-indigo); }

.kpi-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.kpi-badge {
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.kpi-badge.highlight { background: rgba(56, 189, 248, 0.2); color: var(--accent-blue); }
.kpi-badge.warning { background: rgba(251, 191, 36, 0.2); color: var(--accent-amber); }
.kpi-badge.positive { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }

.kpi-value {
  font-size: 1.95rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0.4rem 0 0.2rem;
  letter-spacing: -0.02em;
}

.kpi-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Nav Tabs */
.nav-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2rem;
  overflow-x: auto;
  padding-bottom: 2px;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}

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

.tab-btn.active {
  color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
}

/* Tab Content */
.tab-content {
  display: none;
  animation: fadeIn 0.25s ease-in-out;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Grids & Cards */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.chart-wrapper {
  position: relative;
  height: 320px;
  width: 100%;
}

.chart-wrapper.tall {
  height: 420px;
}


/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.custom-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 700;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.custom-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  white-space: nowrap;
}

.custom-table tbody tr:hover {
  background: var(--bg-tertiary);
}

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

.custom-table tfoot tr td {
  font-weight: 800;
  background: var(--bg-secondary);
  border-top: 2px solid var(--border-color);
}

/* Pill Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-high { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }
.badge-med { background: rgba(56, 189, 248, 0.2); color: var(--accent-blue); }
.badge-low { background: rgba(244, 63, 94, 0.2); color: var(--accent-rose); }

.badge-approved { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }
.badge-review { background: rgba(251, 191, 36, 0.2); color: var(--accent-amber); }
.badge-reclaim { background: rgba(192, 132, 252, 0.2); color: var(--accent-purple); }
.badge-scrutiny { background: rgba(244, 63, 94, 0.2); color: var(--accent-rose); }

.resource-pill {
  font-family: monospace;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

/* Filters Header */
.filter-bar {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
  padding: 0.85rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.filter-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.filter-select, .search-input {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  outline: none;
}

.filter-select:focus, .search-input:focus {
  border-color: var(--accent-blue);
}

/* Model Tier Cards */
.tier-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.tier-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  position: relative;
}

.tier-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.tier-badge {
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.tier-1 { color: #38bdf8; background: rgba(56, 189, 248, 0.15); }
.tier-2 { color: #10b981; background: rgba(16, 185, 129, 0.15); }
.tier-3 { color: #fbbf24; background: rgba(251, 191, 36, 0.15); }
.tier-4 { color: #c084fc; background: rgba(192, 132, 252, 0.15); }

/* Responsive adjustments */
@media (max-width: 900px) {
  .dashboard-container { padding: 1rem; }
  .grid-2 { grid-template-columns: 1fr; }
  .header { flex-direction: column; align-items: stretch; }
  .header-actions { justify-content: flex-start; }
}