:root {
  --bg-page: #f4f6fb;
  --bg-card: #ffffff;
  --bg-subtle: #f8fafc;
  --border-color: #e2e8f0;
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: #eff6ff;
  --success: #059669;
  --success-soft: #ecfdf5;
  --warning: #d97706;
  --warning-soft: #fffbeb;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --purple: #7c3aed;
  --purple-soft: #f5f3ff;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.07);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.5;
  font-size: 14px;
}

.app-shell {
  max-width: 1600px;
  margin: 0 auto;
  padding: 18px 24px 48px;
}

/* Top Header */
.topbar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1e40af, #3b82f6);
  color: #fff;
  font-weight: 700;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
}

.brand h1 {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.subtitle {
  font-size: 12.5px;
  color: var(--text-secondary);
  margin-top: 2px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.subtitle code {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
  color: #1e293b;
}

.dot {
  color: #cbd5e1;
}

.topbar-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

.toggle-bgn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-subtle);
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  cursor: pointer;
  user-select: none;
}

/* Controls & Buttons */
.select-control,
input[type="text"],
input[type="date"],
input[type="number"],
textarea,
select {
  border: 1px solid var(--border-color);
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 7px 11px;
  font-size: 13.5px;
  font-family: inherit;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.select-control:focus,
input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  white-space: nowrap;
}

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

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

.btn-secondary {
  background: var(--primary-soft);
  color: var(--primary);
  border-color: #bfdbfe;
}

.btn-secondary:hover {
  background: #dbeafe;
}

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

.btn-outline:hover {
  background: var(--bg-subtle);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 6px 10px;
}

.btn-ghost:hover {
  background: #f1f5f9;
  color: var(--text-main);
}

.btn-sm {
  padding: 4px 8px;
  font-size: 12px;
  border-radius: 5px;
}

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 250px;
  z-index: 100;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-menu button {
  text-align: left;
  background: none;
  border: none;
  padding: 9px 12px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text-main);
  border-radius: 6px;
  cursor: pointer;
}

.dropdown-menu button:hover {
  background: var(--primary-soft);
  color: var(--primary);
}

/* Navigation Tabs */
.tabs-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover {
  color: var(--text-main);
  border-color: #cbd5e1;
}

.tab-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.22);
}

.pill {
  background: rgba(15, 23, 42, 0.08);
  color: inherit;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11.5px;
}

.tab-btn.active .pill {
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.tab-panel {
  display: none;
}

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

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
}

.kpi-card.kpi-green::before { background: var(--success); }
.kpi-card.kpi-amber::before { background: var(--warning); }
.kpi-card.kpi-red::before { background: var(--danger); }
.kpi-card.kpi-purple::before { background: var(--purple); }

.kpi-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.kpi-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
  margin: 6px 0 2px;
  letter-spacing: -0.02em;
}

.kpi-bgn {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
}

.kpi-sub {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--border-color);
}

/* Alert Banner */
.alert-banner {
  background: var(--warning-soft);
  border: 1px solid #fde68a;
  color: #92400e;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

/* Cards & Charts */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 18px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.card-header h3 {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--text-main);
}

.card-subtitle,
.card-hint {
  font-size: 12.5px;
  color: var(--text-muted);
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 18px;
}

@media (max-width: 1100px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.chart-wrapper {
  position: relative;
  height: 310px;
  width: 100%;
}

/* Filters Bar */
.filters-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-box input {
  width: 100%;
  padding: 9px 14px;
  font-size: 14px;
}

.filter-controls {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

/* Data Tables */
.table-responsive {
  overflow-x: auto;
}

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

.data-table th,
.data-table td {
  padding: 9px 11px;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  vertical-align: middle;
}

.data-table thead th {
  background: var(--bg-subtle);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  white-space: nowrap;
  user-select: none;
}

.data-table thead th[data-sort] {
  cursor: pointer;
}

.data-table thead th[data-sort]:hover {
  color: var(--primary);
  background: #f1f5f9;
}

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

.data-table tbody tr.row-unpaid {
  background-color: #fffBEB;
}

.data-table tbody tr.row-duplicate {
  opacity: 0.6;
  background-color: #f8fafc;
}

.data-table tfoot td,
.data-table tfoot th {
  background: #f1f5f9;
  font-weight: 700;
  color: var(--text-main);
  border-top: 2px solid #cbd5e1;
}

.num {
  text-align: right !important;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-paid {
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid #a7f3d0;
}

.badge-unpaid {
  background: var(--danger-soft);
  color: var(--danger);
  border: 1px solid #fecaca;
}

.badge-warn {
  background: var(--warning-soft);
  color: var(--warning);
  border: 1px solid #fde68a;
}

.badge-cat {
  background: #f1f5f9;
  color: #334155;
  font-weight: 500;
}

.badge-client {
  background: var(--purple-soft);
  color: var(--purple);
  border: 1px solid #ddd6fe;
}

.profit-pos {
  color: var(--success);
  font-weight: 700;
}

.profit-neg {
  color: var(--danger);
  font-weight: 700;
}

.actions-col {
  white-space: nowrap;
  text-align: right !important;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.modal-dialog {
  background: #fff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  box-shadow: 0 20px 35px rgba(15, 23, 42, 0.2);
  overflow: hidden;
}

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

.btn-close {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-body {
  padding: 20px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 14px;
}

@media (max-width: 600px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.form-group label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text-secondary);
}

.field-hint {
  font-size: 11.5px;
  color: var(--text-muted);
}

.modal-check {
  margin-bottom: 4px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.hidden {
  display: none !important;
}

body.hide-bgn .bgn-col,
body.hide-bgn .kpi-bgn {
  display: none !important;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: #1e293b;
  color: #fff;
  padding: 11px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 13px;
  font-weight: 500;
}

/* Auth Login Screen */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

.auth-card {
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 28px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
}

.auth-header {
  text-align: center;
  margin-bottom: 22px;
}

.auth-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
}

.auth-header p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.auth-error {
  background: var(--danger-soft);
  border: 1px solid #fecaca;
  color: var(--danger);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
}

.btn-google {
  width: 100%;
  justify-content: center;
  background: #fff;
  border: 1px solid #cbd5e1;
  color: #1e293b;
  padding: 10px 14px;
  font-size: 14px;
  gap: 10px;
  box-shadow: var(--shadow-sm);
}

.btn-google:hover {
  background: #f8fafc;
  border-color: #94a3b8;
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 18px 0;
  color: var(--text-muted);
  font-size: 12px;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-color);
}

.auth-divider span {
  padding: 0 10px;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.auth-form input[type="password"] {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px 11px;
  font-size: 13.5px;
  font-family: inherit;
}

.auth-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.btn-link {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 12.5px;
  cursor: pointer;
  text-align: center;
  text-decoration: underline;
  margin-top: 4px;
}

@media print {
  .topbar-actions,
  .tabs-nav,
  .filters-bar,
  .actions-col {
    display: none !important;
  }
  .app-shell {
    padding: 0;
  }
  .card {
    box-shadow: none;
    break-inside: avoid;
  }
}