:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --line: #dde3ea;
  --ink: #17202a;
  --muted: #687586;
  --primary: #2563eb;
  --income: #15803d;
  --expense: #b42318;
  --warning: #b7791f;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

.login-view {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background: var(--bg);
}

.login-card {
  display: grid;
  width: min(100%, 390px);
  gap: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  background: var(--surface);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
}

.login-brand {
  margin-bottom: 8px;
  color: var(--ink);
}

.login-brand small {
  color: var(--muted);
}

.app-shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 24px 18px;
  background: #111827;
  color: #fff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

.brand-icon {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  font-size: 1.25rem;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: #aab3c2;
}

.sidebar .nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  border-radius: 8px;
  color: #cbd5e1;
  font-weight: 600;
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.main-content {
  min-width: 0;
  padding: 28px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
}

.topbar > div:first-child {
  flex: 1;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.65rem, 2.6vw, 2.4rem);
  font-weight: 750;
}

.btn {
  border-radius: 8px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.metric-card,
.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.metric-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 120px;
  padding: 18px;
}

.metric-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 650;
}

.metric-card strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 1.45rem;
}

.metric-icon {
  display: grid;
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 8px;
  font-size: 1.25rem;
}

.metric-icon.balance {
  color: #1d4ed8;
  background: #dbeafe;
}

.metric-icon.income {
  color: var(--income);
  background: #dcfce7;
}

.metric-icon.expense {
  color: var(--expense);
  background: #fee2e2;
}

.metric-icon.count {
  color: var(--warning);
  background: #fef3c7;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(320px, 0.75fr);
  gap: 18px;
}

.panel {
  padding: 18px;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.panel-header.compact {
  margin-bottom: 8px;
}

.panel h2 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 750;
}

.panel p {
  margin: 4px 0 0;
}

.filters {
  margin-bottom: 12px;
}

.table {
  margin-bottom: 0;
}

.table th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  white-space: nowrap;
}

.table td {
  vertical-align: middle;
}

.notes-cell {
  max-width: 220px;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.badge-soft {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.38rem 0.65rem;
  font-weight: 700;
}

.badge-income {
  color: var(--income);
  background: #dcfce7;
  border-color: #bbf7d0;
}

.badge-expense {
  color: var(--expense);
  background: #fee2e2;
  border-color: #fecaca;
}

.amount-income {
  color: var(--income);
  font-weight: 750;
}

.amount-expense {
  color: var(--expense);
  font-weight: 750;
}

.action-buttons {
  display: inline-flex;
  gap: 6px;
}

.icon-btn {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  padding: 0;
}

.side-column {
  display: grid;
  gap: 18px;
  align-content: start;
}

.category-list,
.monthly-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.category-list {
  max-height: 360px;
  overflow: auto;
  padding-right: 4px;
}

.category-form {
  display: grid;
  gap: 12px;
  padding-top: 8px;
}

.category-form-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.category-form-actions .btn:first-child.d-none + .btn {
  grid-column: 1 / -1;
}

.category-group {
  display: grid;
  gap: 8px;
}

.category-group-header {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  border: 0;
  padding: 6px 0;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
  text-align: left;
  text-transform: uppercase;
}

.category-group-header:hover {
  color: var(--ink);
}

.category-group-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.category-group-meta .bi-chevron-down {
  transition: transform 0.18s ease;
}

.category-group-header[aria-expanded="true"] .category-group-meta .bi-chevron-down {
  transform: rotate(180deg);
}

.category-chip-list {
  display: grid;
  gap: 6px;
  padding-top: 2px;
}

.category-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 38px;
  padding: 5px 6px 5px 10px;
  background: #f8fafc;
}

.category-chip strong {
  min-width: 0;
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.icon-btn.compact {
  width: 28px;
  height: 28px;
  font-size: 0.82rem;
}

.category-empty-line {
  padding: 4px 2px 8px;
  font-size: 0.9rem;
}

.breakdown-item,
.month-item {
  display: grid;
  gap: 7px;
}

.breakdown-row,
.month-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.breakdown-row strong,
.month-row strong {
  overflow-wrap: anywhere;
}

.progress {
  height: 8px;
  border-radius: 999px;
  background-color: #eef2f7;
}

.progress-bar {
  background-color: var(--primary);
}

.empty-state {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 36px 20px;
  color: var(--muted);
  text-align: center;
}

.empty-state i {
  font-size: 2rem;
}

.empty-state.compact {
  padding: 20px 12px;
}

@media (max-width: 1100px) {
  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 760px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    padding: 16px;
  }

  .sidebar .nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .main-content {
    padding: 18px;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar .btn {
    width: 100%;
  }

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

  .panel-header {
    display: grid;
  }

  .panel-header .btn-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
}