:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(24, 33, 53, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(99, 102, 241, 0.5);
  
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-primary: #6366f1;
  --accent-primary-hover: #4f46e5;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  
  --glass-blur: blur(16px);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* -------------------------------------------------- */
/* Header & Navigation */
/* -------------------------------------------------- */
.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 2rem;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.4);
}

.brand-text h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-enterprise {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  background: linear-gradient(135deg, #4f46e5, #06b6d4);
  color: #fff;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.trust-shield-pill {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: #a7f3d0;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
}

.status-dot.pulse {
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* -------------------------------------------------- */
/* Sub Nav Tabs */
/* -------------------------------------------------- */
.sub-nav {
  display: flex;
  gap: 0.5rem;
  padding: 0.6rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  color: #fff;
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
}

/* -------------------------------------------------- */
/* Layout & Tabs */
/* -------------------------------------------------- */
.main-layout {
  padding: 1.5rem 2rem 3rem 2rem;
  max-width: 1440px;
  margin: 0 auto;
}

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

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-intro {
  margin-bottom: 1.5rem;
}

.section-intro h2 {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-intro p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* -------------------------------------------------- */
/* Buttons */
/* -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border: 1px solid transparent;
}

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

.btn-primary:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-sm {
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
}

.btn-block {
  width: 100%;
}

/* -------------------------------------------------- */
/* KPI Grid */
/* -------------------------------------------------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: var(--shadow-md);
}

.kpi-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.icon-blue { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.icon-amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.icon-red { background: rgba(244, 63, 94, 0.15); color: #fb7185; }
.icon-green { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.icon-cyan { background: rgba(6, 182, 212, 0.15); color: #38bdf8; }

.kpi-details {
  display: flex;
  flex-direction: column;
}

.kpi-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
}

.kpi-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.03em;
  margin: 0.15rem 0;
}

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

.trend-up { color: var(--accent-emerald); }
.trend-down { color: var(--accent-rose); }
.trend-neutral { color: var(--text-muted); }

/* -------------------------------------------------- */
/* Charts Grid */
/* -------------------------------------------------- */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.chart-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}

.wide-card {
  grid-column: span 2;
}

.card-header {
  margin-bottom: 1rem;
}

.card-header h3 {
  font-size: 1rem;
  font-weight: 700;
}

.card-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chart-wrapper {
  position: relative;
  height: 250px;
  width: 100%;
}

/* -------------------------------------------------- */
/* Table Card & Data Tables */
/* -------------------------------------------------- */
.table-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

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

.card-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.table-filters {
  display: flex;
  gap: 0.5rem;
}

.table-filters input, .table-filters select {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

.table-responsive {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.data-table th {
  text-align: left;
  padding: 0.65rem 0.85rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.2);
}

.data-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.loading-cell {
  padding: 2rem;
  color: var(--text-secondary);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.badge-minimal { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.badge-low { background: rgba(6, 182, 212, 0.15); color: #38bdf8; }
.badge-moderate { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.badge-high { background: rgba(249, 115, 22, 0.15); color: #fb923c; }
.badge-critical { background: rgba(244, 63, 94, 0.2); color: #f43f5e; box-shadow: 0 0 8px rgba(244, 63, 94, 0.4); }

/* -------------------------------------------------- */
/* Datasets Grid */
/* -------------------------------------------------- */
.datasets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.dataset-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s;
}

.dataset-card:hover {
  transform: translateY(-2px);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.dataset-card h4 {
  font-size: 1rem;
  margin-bottom: 0.35rem;
}

.dataset-badge-row {
  display: flex;
  gap: 0.4rem;
  margin: 0.5rem 0;
  flex-wrap: wrap;
}

.dataset-roles {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

/* -------------------------------------------------- */
/* Single Predict & Form */
/* -------------------------------------------------- */
.form-grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-card, .result-card {
  background: var(--bg-card);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 0.85rem;
}

.form-group {
  margin-bottom: 0.85rem;
}

.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-group input, .form-group textarea {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 0.55rem 0.85rem;
  font-size: 0.85rem;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group select {
  width: 100%;
  background-color: #131d33 !important;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: #f8fafc !important;
  padding: 0.55rem 0.85rem;
  font-size: 0.85rem;
  font-family: inherit;
  cursor: pointer !important;
  appearance: auto !important;
  -webkit-appearance: menulist !important;
  -moz-appearance: menulist !important;
}

.form-group select option {
  background-color: #0f172a !important;
  color: #f8fafc !important;
  padding: 0.5rem;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--border-focus);
}

/* Dropzone */
.upload-dropzone {
  background: var(--bg-card);
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.upload-dropzone:hover {
  border-color: var(--accent-primary);
  background: rgba(99, 102, 241, 0.05);
}

.dropzone-icon {
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.dropzone-hint {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* -------------------------------------------------- */
/* Modal */
/* -------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: var(--glass-blur);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
}

.modal-body {
  padding: 1.5rem;
}

/* Playbook Checklist */
.playbook-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.playbook-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.playbook-action {
  font-size: 0.85rem;
  color: #e2e8f0;
}

.playbook-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* What If Sliders */
.whatif-sandbox {
  background: rgba(99, 102, 241, 0.05);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1.5rem;
}

.whatif-slider-group {
  margin-bottom: 1rem;
}

.whatif-slider-group label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.whatif-slider-group input[type="range"] {
  width: 100%;
  accent-color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 900px) {
  .charts-grid, .form-grid-layout {
    grid-template-columns: 1fr;
  }
  .wide-card {
    grid-column: span 1;
  }
}