:root {
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --success: #16a34a;
  --success-light: #dcfce7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --purple: #7c3aed;
  --purple-light: #ede9fe;
  
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --bg-header: #0f172a;
  --border: #e2e8f0;
  --border-dark: #cbd5e1;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 8px;
  --radius-lg: 12px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-size: 14px;
}

/* Header */
.app-header {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--text-inverse);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 50;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  font-size: 24px;
  background: #0284c7;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.brand-title h1 {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.brand-title p {
  font-size: 11px;
  color: #94a3b8;
}

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

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(22, 163, 74, 0.15);
  color: #4ade80;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(74, 222, 128, 0.3);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #4ade80;
  border-radius: 50%;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
}

/* Navigation Tabs */
.nav-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  display: flex;
  padding: 0 24px;
  gap: 8px;
}

.nav-tab {
  padding: 12px 18px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.nav-tab:hover {
  color: var(--primary);
  background: #f1f5f9;
}

.nav-tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: #f8fafc;
}

/* Main Container */
.main-content {
  flex: 1;
  padding: 20px 24px;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

.tab-pane {
  display: none;
}

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

/* Toolbar & Filters */
.toolbar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
  gap: 12px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.form-control {
  padding: 7px 12px;
  border: 1px solid var(--border-dark);
  border-radius: 6px;
  font-size: 13px;
  outline: none;
  background: #ffffff;
  color: var(--text-main);
  transition: border-color 0.15s;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.btn {
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid transparent;
  transition: all 0.15s;
}

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

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

.btn-success {
  background-color: var(--success);
  color: #ffffff;
}

.btn-success:hover {
  background-color: #15803d;
}

.btn-outline {
  background-color: #ffffff;
  border-color: var(--border-dark);
  color: var(--text-main);
}

.btn-outline:hover {
  background-color: #f1f5f9;
}

/* KPI Metric Cards */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.kpi-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.kpi-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
}

.kpi-icon {
  font-size: 28px;
  opacity: 0.85;
}

/* Data Table */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
  max-height: 620px;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

table.data-table th {
  background: #f1f5f9;
  color: #334155;
  font-weight: 700;
  padding: 10px 12px;
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
  white-space: nowrap;
}

table.data-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

table.data-table tr:hover {
  background-color: #f8fafc;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  white-space: nowrap;
}

.badge-danger {
  background-color: var(--danger-light);
  color: var(--danger);
  border: 1px solid #fca5a5;
}

.badge-warning {
  background-color: var(--warning-light);
  color: var(--warning);
  border: 1px solid #fcd34d;
}

.badge-success {
  background-color: var(--success-light);
  color: var(--success);
  border: 1px solid #86efac;
}

.badge-neutral {
  background-color: #f1f5f9;
  color: #64748b;
  border: 1px solid #cbd5e1;
}

/* Form Settings Cards */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 20px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 20px;
}

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

.card-header h3 {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: #475569;
  margin-bottom: 5px;
}

.form-group .form-control {
  width: 100%;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Switch toggle */
.toggle-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #cbd5e1;
  transition: .3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .3s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--success);
}

input:checked + .slider:before {
  transform: translateX(20px);
}

/* Small & Alert Buttons */
.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 4px;
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}

.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-warning {
  background-color: var(--warning);
  color: #ffffff;
}

.btn-warning:hover {
  background-color: #b45309;
}

/* Modal Dialog */
.modal-backdrop {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease-in-out;
  padding: 16px;
}

.modal-backdrop.show,
.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  transform: translateY(-20px);
  transition: transform 0.2s ease-in-out;
}

.modal-backdrop.show .modal-card,
.modal-backdrop.active .modal-card {
  transform: translateY(0);
}

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

.modal-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 20px;
  color: #64748b;
  cursor: pointer;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  background: #f8fafc;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.checkbox-group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
  margin-top: 6px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: #334155;
  cursor: pointer;
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 14px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: #ffffff;
  margin-top: auto;
}

/* Quick Copy Button (Office / Modern style) */
.btn-copy-quick {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  padding: 2px 4px;
  cursor: pointer;
  color: #64748b;
  font-size: 11px;
  line-height: 1;
  transition: all 0.15s ease;
  vertical-align: middle;
  outline: none;
}

.btn-copy-quick:hover {
  background: #e2e8f0;
  color: #0f172a;
  border-color: #94a3b8;
  transform: scale(1.08);
}

.btn-copy-quick.copied {
  background: #dcfce7 !important;
  border-color: #86efac !important;
  color: #15803d !important;
}

/* Badge Min Time */
.badge-min-time {
  background: #e0f2fe;
  color: #0284c7;
  border: 1px solid #bae6fd;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 11px;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}