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

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #232735;
  --border: #2a2e3d;
  --text: #e2e8f0;
  --text-muted: #8892a4;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --sidebar-width: 220px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 20px 0;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 24px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.brand-icon { font-size: 1.4rem; }

.nav-links {
  list-style: none;
  padding: 0 8px;
}

.nav-links li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--text-muted);
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.9rem;
  transition: all 0.15s;
  margin-bottom: 2px;
}

.nav-links li a:hover {
  background: var(--surface2);
  color: var(--text);
}

.nav-links li a.active {
  background: var(--primary);
  color: #fff;
}

.nav-icon { font-size: 1rem; width: 20px; text-align: center; }

/* Main content */
.content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 28px 32px;
  min-height: 100vh;
}

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.88rem;
  transition: opacity 0.3s;
}

.alert-success { background: #16392a; color: var(--success); border: 1px solid #1a4d35; }
.alert-error { background: #3b1a1a; color: var(--danger); border: 1px solid #4d2222; }

/* Page header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  font-size: 0.88rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  white-space: nowrap;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 5px 10px; font-size: 0.82rem; }
.btn-ghost { background: none; color: var(--text-muted); padding: 6px 10px; }
.btn-ghost:hover { color: var(--text); background: var(--surface2); }

/* Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.stat-card .stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.stat-card .stat-value {
  font-size: 1.8rem;
  font-weight: 700;
}

.stat-card .stat-value.text-primary { color: var(--primary); }
.stat-card .stat-value.text-success { color: var(--success); }
.stat-card .stat-value.text-warning { color: var(--warning); }
.stat-card .stat-value.text-info { color: var(--info); }

/* Tables */
.table-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 12px;
}

.table-header h2 {
  font-size: 1rem;
  font-weight: 600;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 10px 16px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

td {
  padding: 12px 16px;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface2); }

td a { color: var(--primary); text-decoration: none; }
td a:hover { text-decoration: underline; }

/* Status badges */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: capitalize;
}

.badge-active { background: #16392a; color: var(--success); }
.badge-in_storage { background: #1e293b; color: var(--info); }
.badge-maintenance { background: #3b2f1a; color: var(--warning); }
.badge-retired { background: #2d2535; color: #a78bfa; }
.badge-disposed { background: #3b1a1a; color: var(--danger); }
.badge-offboarded { background: #2d2535; color: #a78bfa; }

/* Category badges */
.cat-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Forms */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  max-width: 800px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.form-group textarea { resize: vertical; min-height: 80px; }

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* Filter bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-bar input,
.filter-bar select {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.filter-bar input:focus,
.filter-bar select:focus {
  border-color: var(--primary);
}

/* Detail view */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.detail-card h3 {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.detail-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.88rem;
}

.detail-row .label { color: var(--text-muted); }
.detail-row .value { font-weight: 500; text-align: right; }

/* History */
.history-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

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

.history-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 6px;
  flex-shrink: 0;
}

.history-time {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Section titles */
.section-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}

.empty-state p { margin-bottom: 16px; }

/* Two-column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Compliance dots */
.compliance-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  vertical-align: middle;
}

.compliance-yes { background: var(--success); }
.compliance-no { background: var(--danger); }
.compliance-na { background: var(--border); }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .content { margin-left: 0; padding: 16px; }
  .form-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}