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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f9fafb;
  --white: #ffffff;
  --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);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --radius: 8px;
  --radius-lg: 12px;
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  min-height: 100vh;
}

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

/* ---- Layout ---- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

/* ---- Card ---- */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.card-body {
  padding: 24px;
}

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

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

/* ---- Auth form ---- */
.auth-box {
  width: 100%;
  max-width: 420px;
}

.auth-logo {
  text-align: center;
  margin-bottom: 28px;
}

.auth-logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.auth-logo p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ---- Form elements ---- */
.form-group {
  margin-bottom: 16px;
}

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

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
select,
textarea {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.15s;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

input::placeholder {
  color: #9ca3af;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: background 0.15s, opacity 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  text-decoration: none;
}

.btn-success {
  background: var(--success);
  color: var(--white);
}
.btn-success:hover:not(:disabled) {
  background: #15803d;
}

.btn-danger {
  background: var(--danger);
  color: var(--white);
}
.btn-danger:hover:not(:disabled) {
  background: #b91c1c;
}

.btn-outline {
  background: var(--white);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover:not(:disabled) {
  background: var(--bg);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: none;
}
.btn-ghost:hover:not(:disabled) {
  background: var(--bg);
  color: var(--text);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
}

.btn-lg {
  padding: 13px 24px;
  font-size: 15px;
}

.btn-block {
  width: 100%;
}

/* ---- Navbar ---- */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: 56px;
  display: flex;
  align-items: center;
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar-brand {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-user {
  font-size: 14px;
  color: var(--text-muted);
}

/* ---- Stats cards ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

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

.stat-label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.stat-value {
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
}

.stat-value.income {
  color: var(--success);
}

.stat-value.expense {
  color: var(--danger);
}

.stat-value.neutral {
  color: var(--primary);
}

/* ---- Table ---- */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--white);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

th {
  padding: 12px 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: var(--bg);
}

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-success {
  background: var(--success-light);
  color: var(--success);
}

.badge-danger {
  background: var(--danger-light);
  color: var(--danger);
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-muted {
  background: #f3f4f6;
  color: var(--text-muted);
}

.badge-warning {
  background: var(--warning-light);
  color: var(--warning);
}

/* ---- Alerts ---- */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.alert-success {
  background: var(--success-light);
  color: #166534;
  border-color: #bbf7d0;
}

.alert-danger {
  background: var(--danger-light);
  color: #991b1b;
  border-color: #fecaca;
}

.alert-info {
  background: var(--primary-light);
  color: #1e40af;
  border-color: #bfdbfe;
}

/* ---- Modal ---- */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  overflow: hidden;
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 17px;
  font-weight: 600;
}

.modal-body {
  padding: 24px;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ---- Sidebar + main layout ---- */
.app-layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

.sidebar {
  width: 240px;
  background: var(--white);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  flex-shrink: 0;
}

.sidebar-section {
  padding: 0 12px;
  margin-bottom: 8px;
}

.sidebar-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  padding: 8px 8px 4px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  transition: background 0.1s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar-item:hover {
  background: var(--bg);
}

.sidebar-item.active {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 500;
}

.main-content {
  flex: 1;
  padding: 28px 32px;
  overflow-y: auto;
}

/* ---- Tab navigation ---- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 24px;
}

.tab-btn {
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-panel {
  display: none;
}

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

/* ---- Connect page ---- */
.connect-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: linear-gradient(135deg, #f0f4ff 0%, #fafafa 100%);
}

.connect-card {
  max-width: 460px;
  width: 100%;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.connect-header {
  background: var(--primary);
  color: white;
  padding: 28px 32px;
  text-align: center;
}

.connect-header h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.connect-header p {
  opacity: 0.85;
  font-size: 14px;
}

.connect-body {
  padding: 32px;
}

.bank-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 26px;
}

.connect-steps {
  list-style: none;
  margin: 20px 0;
}

.connect-steps li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-muted);
}

.step-num {
  width: 22px;
  height: 22px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

.secure-note {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-muted);
  margin: 20px 0;
}

/* ---- Utility ---- */
.text-muted {
  color: var(--text-muted);
}
.text-success {
  color: var(--success);
}
.text-danger {
  color: var(--danger);
}
.text-right {
  text-align: right;
}
.font-mono {
  font-family: ui-monospace, 'Cascadia Code', monospace;
  font-size: 13px;
}
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.hidden { display: none !important; }

/* ---- Loading spinner ---- */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

.spinner-dark {
  border-color: rgba(0,0,0,0.1);
  border-top-color: var(--primary);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.empty-state p {
  font-size: 14px;
}

/* ---- Page header ---- */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}

.page-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
}

.page-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---- Client card grid ---- */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.client-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  cursor: pointer;
  transition: box-shadow 0.15s, border-color 0.15s;
  box-shadow: var(--shadow-sm);
}

.client-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #d1d5db;
}

.client-card-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.client-card-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

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

/* ---- Copy link input ---- */
.copy-input-group {
  display: flex;
  gap: 8px;
}

.copy-input-group input {
  flex: 1;
  font-family: ui-monospace, monospace;
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg);
}

/* ---- Category filter pills ---- */
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.pill {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  transition: background 0.1s, color 0.1s;
}

.pill:hover {
  background: var(--bg);
}

.pill.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .app-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 0;
  }

  .sidebar-section {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
  }

  .main-content {
    padding: 20px 16px;
  }

  .page-header {
    flex-direction: column;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .clients-grid {
    grid-template-columns: 1fr;
  }

  th, td {
    padding: 10px 12px;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}