:root {
  --bg-main: #0b0f17;
  --bg-card: #131b28;
  --bg-card-dark: #0e1520;
  --border-color: #1e293b;
  --border-hover: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --brand-blue: #3b82f6;
  --brand-blue-hover: #2563eb;
  --accent-green: #10b981;
  --accent-amber: #f59e0b;
  --accent-rose: #f43f5e;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Top Bar */
.app-header {
  background: rgba(19, 27, 40, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #fff;
}

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

.system-health-bar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.health-chip {
  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, 0.3);
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-green);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.quick-stat {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

.stat-val {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
}

/* Nav Tabs */
.app-nav {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
}

.nav-tab {
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.75rem 1rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--text-main);
}

.nav-tab.active {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-blue);
}

/* Metrics Row */
.metrics-row {
  max-width: 1440px;
  margin: 1.5rem auto 0;
  padding: 0 1.5rem;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.metric-num {
  font-size: 2rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--brand-blue);
}

.metric-title {
  font-weight: 700;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

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

/* Main Content */
.main-content {
  max-width: 1440px;
  margin: 1.5rem auto;
  padding: 0 1.5rem 3rem;
  width: 100%;
  flex: 1;
}

.tab-pane {
  display: none;
}

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

.pane-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.pane-header h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #fff;
}

.pane-sub {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.spec-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-blue);
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--brand-blue);
  border-radius: 50%;
}

/* Cards & Grid */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}

.card-dark {
  background: var(--bg-card-dark);
}

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

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
}

.grid-2-tight {
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* Flowchart Telemetry */
.flowchart-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.stage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  position: relative;
  transition: all 0.2s;
  cursor: pointer;
}

.stage-card:hover {
  border-color: var(--brand-blue);
  transform: translateY(-2px);
}

.stage-num {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-blue);
  margin-bottom: 0.3rem;
}

.stage-title {
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.stage-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.stage-footer {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

/* Tables */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.data-table th {
  background: rgba(14, 21, 32, 0.7);
  padding: 0.85rem 1rem;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.data-table tr:hover td {
  background: rgba(30, 41, 59, 0.4);
}

.table-footer {
  padding: 1rem 0;
  font-size: 0.8rem;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.form-input, .form-select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus {
  border-color: var(--brand-blue);
}

.filter-controls {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.search-input {
  min-width: 260px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--brand-blue-hover);
}

.btn-warning {
  background: var(--accent-amber);
  color: #0b0f17;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

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

.btn-outline:hover {
  border-color: var(--text-main);
  color: var(--text-main);
}

.w-full {
  width: 100%;
}

/* Badges & Code Blocks */
.badge {
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(148, 163, 184, 0.1);
  color: var(--text-muted);
}

.badge-success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.code-block {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.75rem 1rem;
  background: #06090e;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: #38bdf8;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.json-viewer {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: #06090e;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1rem;
  max-height: 380px;
  overflow-y: auto;
  color: #e2e8f0;
}

.probe-list {
  list-style: none;
  font-size: 0.85rem;
}

.probe-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
}

/* Modal Dialog */
.case-dialog {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  background: var(--bg-card);
  color: var(--text-main);
  max-width: 900px;
  width: 90%;
  margin: auto;
  padding: 0;
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}

.case-dialog::backdrop {
  background: rgba(11, 15, 23, 0.8);
  backdrop-filter: blur(8px);
}

.dialog-content {
  display: flex;
  flex-direction: column;
  max-height: 85vh;
}

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

.dialog-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-blue);
}

.dialog-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.dialog-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.modal-section-title {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-blue);
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.35rem;
}

.fields-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.field-cell {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
}

.field-key {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
}

.field-val {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  word-break: break-word;
  margin-top: 0.15rem;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mb-3 { margin-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.text-center { text-align: center; }
.text-sm { font-size: 0.8rem; }
.font-bold { font-weight: 700; }
.block { display: block; }