:root {
  --primary: #F48120;
  --primary-dark: #E86C0A;
  --bg: #0F172A;
  --bg-secondary: #1E293B;
  --bg-tertiary: #334155;
  --text: #F1F5F9;
  --text-secondary: #94A3B8;
  --border: #475569;
  --success: #22C55E;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.screen { min-height: 100vh; }
.hidden { display: none !important; }

/* Login */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-secondary) 100%);
}

.login-container {
  background: var(--bg-secondary);
  padding: 48px;
  border-radius: 16px;
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.logo h1 { font-size: 28px; font-weight: 700; }

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  transition: border-color 0.2s;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
  width: 100%;
}

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

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

.btn-secondary:hover { background: var(--border); }

.btn-icon {
  padding: 8px;
  background: transparent;
  color: var(--text-secondary);
}

.error-message {
  color: var(--error);
  font-size: 14px;
  margin-top: 16px;
  text-align: center;
}

/* Dashboard Layout */
#dashboard-screen {
  display: flex;
  height: 100vh;
}

.sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-header span { font-weight: 600; font-size: 18px; }

.sidebar-nav { padding: 16px 12px; flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  margin-bottom: 4px;
  transition: all 0.2s;
}

.nav-item:hover, .nav-item.active {
  background: var(--bg-tertiary);
  color: var(--text);
}

.nav-item svg { flex-shrink: 0; }

.sidebar-footer { padding: 16px; border-top: 1px solid var(--border); }

.main-content { flex: 1; overflow: auto; }

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-actions { display: flex; align-items: center; gap: 16px; }

.badge {
  padding: 4px 12px;
  background: var(--primary);
  color: white;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

#content-area { padding: 32px; }

.section { display: none; }
.section.active { display: block; }

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
}

.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Cards & Grid */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

/* Tables */
.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.search-input, .select-input, .datetime-input {
  padding: 10px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
}

.search-input { min-width: 280px; }

.table-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: auto;
}

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

th, td {
  padding: 14px 20px;
  text-align: left;
  font-size: 14px;
}

th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.5px;
}

tbody tr {
  border-top: 1px solid var(--border);
  transition: background 0.2s;
}

tbody tr:hover { background: rgba(255,255,255,0.02); }

/* Status Indicators */
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status.active { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.status.active .status-dot { background: var(--success); }

.status.pending { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.status.pending .status-dot { background: var(--warning); }

.status.error { background: rgba(239, 68, 68, 0.15); color: var(--error); }
.status.error .status-dot { background: var(--error); }

/* Alert List */
.alert-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.alert-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
  border-left: 3px solid var(--warning);
}

.alert-item.critical { border-left-color: var(--error); }
.alert-item.high { border-left-color: var(--warning); }
.alert-item.medium { border-left-color: var(--info); }
.alert-item.low { border-left-color: var(--success); }

.alert-info { flex: 1; }
.alert-title { font-weight: 500; font-size: 14px; }
.alert-meta { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* Workers Grid */
.workers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.worker-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.worker-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 12px;
}

.worker-name { font-weight: 600; font-size: 16px; }

.worker-meta {
  font-size: 13px;
  color: var(--text-secondary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow: auto;
}

.modal h3 { margin-bottom: 20px; }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* Responsive */
@media (max-width: 1200px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .sidebar { display: none; }
  .stats-grid { grid-template-columns: 1fr; }
  .header { padding: 16px 20px; }
  #content-area { padding: 20px; }
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading { animation: pulse 2s infinite; }

/* Code Editor */
.code-editor {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: 'Fira Code', monospace;
  font-size: 13px;
  min-height: 300px;
  white-space: pre-wrap;
  overflow: auto;
}