:root {
  --page-bg: #F7F8FA;
  --surface: #FFFFFF;
  --text-primary: #172033;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --success: #15803D;
  --success-bg: #DCFCE7;
  --warning: #B45309;
  --warning-bg: #FEF3C7;
  --danger: #B91C1C;
  --danger-bg: #FEE2E2;
  --neutral: #475569;
  --neutral-bg: #F1F5F9;
  --info: #0284C7;
  --info-bg: #E0F2FE;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --radius: 8px;
  --radius-lg: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--page-bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
.wrap {
  max-width: 1360px;
  margin: 0 auto;
  padding: 20px 24px 40px;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.health-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--surface);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  display: inline-block;
}
.dot.error { background: var(--danger); }
.dot.loading { background: var(--warning); }

/* Tabs Navigation */
.tabs-nav {
  display: flex;
  gap: 4px;
  background: var(--border-light);
  padding: 4px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 20px;
  width: fit-content;
}
.tab-btn {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  display: inline-block;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
  background: var(--surface);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* Summary Cards */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.summary-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}
.device-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}
.stat-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
}
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  text-align: center;
  margin-top: 10px;
}
.stat-item .val {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}
.stat-item .lbl {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2px;
}
.stat-confirmed {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-light);
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.stat-confirmed strong {
  color: var(--success);
  font-size: 14px;
}

/* Filters Bar */
.filter-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  box-shadow: var(--shadow-sm);
}
.filter-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.filter-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  padding: 0 4px;
}
.filter-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}
.filter-bar input[type="text"],
.filter-bar input[type="date"],
.filter-bar select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-primary);
  min-height: 38px;
  outline: none;
  transition: border-color 0.15s;
}
.filter-bar input[type="text"]:focus,
.filter-bar input[type="date"]:focus,
.filter-bar select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}
.filter-bar input[type="text"] {
  min-width: 220px;
}
.btn {
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  min-height: 38px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.15s ease;
}
.btn:hover {
  background: var(--border-light);
  border-color: var(--text-muted);
}
.btn-primary {
  background: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  color: #FFFFFF;
}
.match-count {
  margin-left: auto;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Tables */
.table-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}
table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}
th {
  background: var(--border-light);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
  color: var(--text-primary);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: #FAFAFC; }
tr.row-timed-out td {
  background: #FFFDFD;
  opacity: 0.85;
}

/* Status Pill */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
  text-transform: capitalize;
}
.pill-connecting { background: var(--neutral-bg); color: var(--neutral); }
.pill-online { background: var(--info-bg); color: var(--info); }
.pill-offered { background: var(--warning-bg); color: var(--warning); }
.pill-downloading { background: var(--primary-light); color: var(--primary); }
.pill-awaiting { background: var(--warning-bg); color: var(--warning); }
.pill-completed { background: var(--success-bg); color: var(--success); }
.pill-disconnected { background: var(--neutral-bg); color: var(--neutral); }
.pill-error { background: var(--danger-bg); color: var(--danger); }
.pill-timedout { background: var(--danger-bg); color: var(--danger); }

/* Progress bar */
.progress-box {
  width: 140px;
}
.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 4px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 999px;
  transition: width 0.3s ease;
}
.progress-text {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Mobile Cards View (<768px) */
.cards-view {
  display: none;
  flex-direction: column;
  gap: 12px;
}
.device-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow-sm);
}
.device-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}
.device-card-imei {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}
.device-card-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 12px;
  margin: 10px 0;
  color: var(--text-muted);
}
.device-card-body strong {
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .table-container.live-table { display: none; }
  .cards-view { display: flex; }
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .filter-bar input[type="text"],
  .filter-bar select {
    width: 100%;
  }
  .stat-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
}

/* Footer & Empty state */
.empty-state {
  padding: 40px 20px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}
.page-footer {
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.load-more-box {
  text-align: center;
  padding: 16px;
}
.btn-xs {
  padding: 4px 10px;
  font-size: 12px;
  min-height: 28px;
  border-radius: 5px;
  font-weight: 600;
}
.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-outline-primary:hover {
  background: var(--primary);
  color: #FFFFFF;
}
.btn-danger-outline {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger-outline:hover {
  background: var(--danger);
  color: #FFFFFF;
}
.btn-danger {
  background: var(--danger);
  color: #FFFFFF;
  border-color: var(--danger);
}
.btn-danger:hover {
  background: #991b1b;
  border-color: #991b1b;
}

/* Modal Dialog */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}
.modal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  padding: 24px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  transform: scale(0.96);
  transition: transform 0.2s ease;
}
.modal-backdrop.active .modal-card {
  transform: scale(1);
}
.modal-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.modal-form-group {
  margin-bottom: 16px;
}
.modal-form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.modal-form-group input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 13px;
  outline: none;
  box-sizing: border-box;
}
.modal-form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}
.quick-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.quick-pill {
  font-size: 11px;
  padding: 3px 8px;
  background: var(--border-light);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all 0.15s;
}
.quick-pill:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}
.error-subtext {
  font-size: 11px;
  color: var(--danger);
  margin-top: 3px;
  word-break: break-all;
}