:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-primary: #0f172a;
  --color-primary-contrast: #ffffff;
  --color-accent: #2563eb;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-danger: #ef4444;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--color-bg);
  color: var(--color-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior-y: contain;
}

button, input {
  font-family: inherit;
}

.hidden {
  display: none !important;
}

.screen {
  min-height: 100vh;
  max-width: 480px;
  margin: 0 auto;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
}

/* ---------- Auth screen ---------- */

#authScreen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-left: 20px;
  padding-right: 20px;
}

.auth-card {
  width: 100%;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

.auth-card h1 {
  margin: 0 0 20px;
  font-size: 24px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 14px;
  color: var(--color-muted);
}

.field input {
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 16px;
  color: var(--color-primary);
}

.field input:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.field select {
  padding: 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 16px;
  color: var(--color-primary);
  background: var(--color-surface);
}

.error-text {
  color: var(--color-danger);
  font-size: 14px;
  min-height: 18px;
  margin: 0 0 10px;
}

.btn-primary {
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
}

.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.link-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 14px;
  padding: 12px 0 0;
  cursor: pointer;
}

/* ---------- App shell ---------- */

.app-shell {
  display: flex;
  min-height: 100vh;
  align-items: flex-start;
}

.app-title {
  font-size: 18px;
  font-weight: 700;
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 30;
}

.side-nav {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 240px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  transform: translateX(-100%);
  transition: transform 0.2s ease;
  z-index: 40;
  padding-top: var(--safe-top);
  display: flex;
  flex-direction: column;
}

.side-nav.side-nav-open {
  transform: translateX(0);
}

.side-nav-header {
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  flex: 1;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border: none;
  background: none;
  font-size: 15px;
  color: var(--color-primary);
  cursor: pointer;
  text-align: left;
}

.nav-item-active {
  background: var(--color-bg);
  font-weight: 600;
  color: var(--color-accent);
}

.nav-icon {
  font-size: 18px;
}

.side-nav-footer {
  margin-top: auto;
  padding: 12px 0 calc(12px + var(--safe-bottom));
  border-top: 1px solid var(--color-border);
}

.nav-logout {
  color: var(--color-muted, #64748b);
}

.app-main {
  flex: 1;
  min-width: 0;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
  overflow-x: clip;
  overflow-y: visible;
}

.top-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 20px 8px;
  overflow: visible;
}

.top-bar-title {
  font-size: 18px;
  font-weight: 700;
  min-width: 0;
  flex: 0 1 auto;
}

.add-date-picker {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: auto;
  flex-shrink: 0;
  max-width: min(100%, 11.5rem);
}

.add-date-field {
  position: relative;
  min-width: 0;
  flex: 1 1 auto;
}

.add-date-btn {
  display: block;
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  font-size: 13px;
  line-height: 1.2;
  color: var(--color-primary);
  background: var(--color-surface);
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

.add-date-picker .icon-btn {
  flex-shrink: 0;
  padding: 4px 6px;
}

.date-picker-modal {
  padding-top: 16px;
}

.date-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 16px;
}

.date-picker-month-label {
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  flex: 1;
}

.date-picker-weekdays,
.date-picker-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.date-picker-weekdays {
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 600;
  color: var(--color-muted);
  text-align: center;
}

.date-picker-grid {
  margin-bottom: 12px;
}

.date-picker-day {
  aspect-ratio: 1;
  border: none;
  border-radius: var(--radius-sm);
  background: none;
  font-size: 14px;
  color: var(--color-primary);
  cursor: pointer;
}

.date-picker-day:hover:not(:disabled) {
  background: var(--color-bg);
}

.date-picker-day-selected {
  background: var(--color-accent);
  color: var(--color-primary-contrast);
  font-weight: 600;
}

.date-picker-day-today:not(.date-picker-day-selected) {
  box-shadow: inset 0 0 0 1px var(--color-accent);
}

.date-picker-day-disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.date-picker-today {
  padding: 8px 0 0;
}

.icon-btn {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--color-primary);
  padding: 4px 8px;
  line-height: 1;
}

@media (min-width: 768px) {
  .nav-overlay {
    display: none !important;
  }

  .side-nav {
    position: sticky;
    top: 0;
    height: 100vh;
    transform: none;
  }

  #menuToggleBtn {
    display: none;
  }
}

.view {
  max-width: 640px;
  margin: 0 auto;
}

.view-header {
  padding: 4px 20px 12px;
}

.view-header h1 {
  margin: 0;
  font-size: 20px;
}

.sync-banner {
  margin: 0 20px 12px;
  padding: 10px 14px;
  background: #fef3c7;
  color: #92400e;
  border-radius: var(--radius-sm);
  font-size: 13px;
  text-align: center;
}

/* ---------- Entry (the core, frictionless flow) ---------- */

.entry {
  padding: 8px 20px 4px;
}

.amount-display {
  text-align: center;
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -1px;
  margin: 8px 0 4px;
  font-variant-numeric: tabular-nums;
}

.txn-toggle {
  display: flex;
  gap: 0;
  margin: 0 auto 14px;
  max-width: 240px;
  padding: 3px;
  background: var(--color-border);
  border-radius: var(--radius-md);
}

.txn-toggle-modal {
  margin: 0 0 14px;
  max-width: none;
}

.txn-toggle-btn {
  flex: 1;
  padding: 8px 12px;
  border: none;
  border-radius: calc(var(--radius-md) - 2px);
  background: transparent;
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.txn-toggle-btn-active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.amount-display-income {
  color: var(--color-accent);
}

.day-total-positive {
  color: var(--color-accent);
}

.day-total-negative {
  color: var(--color-primary);
}

.history-row-amount-income {
  color: var(--color-accent);
}

.day-total-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  margin-bottom: 14px;
}

.day-total-label {
  font-size: 14px;
  color: var(--color-muted);
  font-weight: 500;
}

.day-total-amount {
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  margin-bottom: 8px;
  scrollbar-width: none;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  overflow: visible;
  padding-bottom: 0;
}

.category-grid .chip {
  flex: none;
  text-align: center;
  padding: 10px 8px;
  text-transform: capitalize;
  white-space: normal;
}

.chips::-webkit-scrollbar {
  display: none;
}

.chip {
  flex: 0 0 auto;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary);
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
}

.chip-selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-contrast);
}

.details-toggle {
  font-size: 13px;
  padding: 6px 0;
}

.details-fields {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.details-fields input {
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 15px;
}

.keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 12px 0 16px;
}

.keypad button {
  padding: 18px 0;
  font-size: 22px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary);
  cursor: pointer;
}

.keypad button:active {
  background: var(--color-border);
}

.keypad-blank {
  border: none !important;
  background: transparent !important;
  cursor: default !important;
}

.keypad-back {
  font-size: 20px;
}

.btn-save {
  margin-bottom: 16px;
}

.last-entry {
  margin-bottom: 12px;
}

.last-entry-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  padding: 0 2px;
}

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

.last-entry-hint {
  font-size: 12px;
  color: var(--color-muted);
}

.last-entry .expense-row {
  margin-bottom: 0;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

.last-entry .expense-main {
  cursor: pointer;
}

.last-entry .expense-trailing {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.last-entry .expense-category {
  text-transform: capitalize;
}

.last-entry .expense-chevron {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--color-muted);
  transition: transform 0.18s ease;
}

.last-entry .expense-row.revealed .expense-chevron {
  transform: rotate(90deg);
}

/* ---------- Summary ---------- */

.summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 14px 20px;
  margin: 4px 20px 12px;
  background: var(--color-surface);
  border-radius: var(--radius-md);
}

.summary-label {
  color: var(--color-muted);
  font-size: 14px;
}

.summary-total {
  font-size: 20px;
  font-weight: 700;
}

/* ---------- History ---------- */

.history-summary {
  display: flex;
  padding: 8px 20px 16px;
  border-bottom: 1px solid var(--color-border);
}

.history-summary-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.history-summary-label {
  font-size: 13px;
  color: var(--color-muted);
}

.history-summary-value {
  font-size: 18px;
  font-weight: 700;
}

.history-summary-income {
  color: var(--color-accent);
}

.history-summary-expense {
  color: var(--color-primary);
}

.history-summary-list {
  padding: 0 20px 32px;
}

.history-day-group {
  margin-bottom: 8px;
}

.history-day-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0 8px;
}

.history-day-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.history-day-num {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
}

.history-day-badge {
  font-size: 12px;
  color: var(--color-muted);
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.history-day-total {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
}

.history-summary-list .expense-row {
  border-radius: 0;
  margin-bottom: 0;
  border-bottom: 1px solid var(--color-border);
}

.history-summary-list .expense-main {
  background: var(--color-bg);
  padding: 12px 0;
  gap: 10px;
}

.history-summary-list .expense-row.revealed .expense-main {
  transform: translateX(-120px);
}

.history-summary-list .expense-actions {
  width: 120px;
}

.history-summary-list .expense-edit,
.history-summary-list .expense-delete {
  background: var(--color-surface);
  color: var(--color-muted);
  border-left: 1px solid var(--color-border);
  font-size: 12px;
  font-weight: 500;
}

.history-summary-list .expense-edit:active,
.history-summary-list .expense-delete:active {
  background: var(--color-border);
  color: var(--color-primary);
}

.history-summary-list .expense-trailing {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.history-summary-list .expense-chevron {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--color-muted);
  transition: transform 0.18s ease;
}

.history-summary-list .expense-row.revealed .expense-chevron {
  transform: rotate(90deg);
}

.history-row-icon {
  flex-shrink: 0;
  width: 36px;
  font-size: 22px;
  line-height: 1;
  text-align: center;
}

.history-row-meta {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.history-row-category {
  font-size: 15px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-row-secondary {
  font-size: 12px;
  color: var(--color-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-row-amount {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  flex-shrink: 0;
}

.history-summary-list .expense-pending .history-row-amount {
  color: var(--color-muted);
}

.muted-text {
  color: var(--color-muted);
  font-size: 14px;
  text-align: center;
  padding: 24px 0;
}

.expenses-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.expense-empty {
  color: var(--color-muted);
  font-size: 14px;
  padding: 20px 0;
  text-align: center;
}

.expense-row {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.expense-main {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: var(--color-surface);
  transition: transform 0.18s ease;
  cursor: pointer;
}

.expense-row.revealed .expense-main {
  transform: translateX(-168px);
}

.expense-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.expense-category {
  font-size: 15px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.expense-time {
  font-size: 12px;
  color: var(--color-muted);
}

.expense-amount {
  font-size: 16px;
  font-weight: 700;
  white-space: nowrap;
}

.expense-pending .expense-amount {
  color: var(--color-muted);
}

.expense-actions {
  position: absolute;
  top: 0;
  right: 0;
  width: 168px;
  height: 100%;
  display: flex;
}

.expense-edit,
.expense-delete {
  flex: 1;
  border: none;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.expense-edit {
  background: var(--color-accent);
}

.expense-delete {
  background: var(--color-danger);
}

.expense-edit:disabled,
.expense-delete:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (min-width: 480px) {
  .amount-display {
    font-size: 64px;
  }
}

/* ---------- Shared cards (Analytics / Goals / Settings) ---------- */

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 16px;
  margin: 0 20px 16px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-header-row h2 {
  margin: 0;
}

.card-header-row .link-btn {
  width: auto;
  padding: 0;
}

.btn-secondary {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

/* ---------- Analytics ---------- */

.month-picker {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
  flex-shrink: 0;
  max-width: min(100%, 12rem);
}

.month-picker .icon-btn {
  flex-shrink: 0;
  padding: 4px 6px;
}

.month-label {
  font-size: 13px;
  font-weight: 600;
  min-width: 0;
  flex: 1 1 auto;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-card-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

@media (min-width: 480px) {
  .category-card-body {
    flex-direction: row;
    align-items: center;
  }
}

.chart-wrap {
  display: flex;
  justify-content: center;
  width: 100%;
}

.donut-chart {
  width: 160px;
  height: 160px;
  flex-shrink: 0;
}

.category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
}

.category-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--color-border);
}

.category-row:last-child {
  border-bottom: none;
}

.category-swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.category-name {
  flex: 1;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-pct {
  color: var(--color-muted);
  font-size: 12px;
}

.category-amount {
  font-weight: 600;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 140px;
  width: 100%;
  overflow-x: auto;
  padding-bottom: 2px;
}

.bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  flex: 0 0 26px;
  height: 100%;
}

.bar-track {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: flex-end;
}

.bar-fill {
  width: 100%;
  background: var(--color-accent);
  border-radius: 3px 3px 0 0;
  min-height: 2px;
}

.bar-label {
  font-size: 10px;
  color: var(--color-muted);
  white-space: nowrap;
}

/* ---------- Goals (budgets + savings goals) ---------- */

.budgets-list,
.goals-list {
  display: flex;
  flex-direction: column;
}

.budget-row,
.goal-card {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.budgets-list .budget-row:last-child,
.goals-list .goal-card:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.budget-row-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  gap: 8px;
}

.budget-name {
  font-weight: 600;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress-track {
  height: 8px;
  background: var(--color-bg);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 6px;
}

.progress-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.2s ease;
}

.progress-ok {
  background: #10b981;
}

.progress-warning {
  background: #f59e0b;
}

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

.progress-row-bottom {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--color-muted);
}

.goal-deadline {
  font-size: 12px;
  color: var(--color-muted);
  margin-top: 4px;
}

.goal-contribute {
  margin-top: 10px;
  width: auto;
  padding: 8px 14px;
  font-size: 13px;
}

/* ---------- Settings ---------- */

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0 16px;
  font-size: 14px;
}

.settings-value {
  color: var(--color-muted);
}

/* ---------- Modals ---------- */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 50;
}

.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 24px 20px calc(20px + var(--safe-bottom));
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

@media (min-width: 480px) {
  .modal-overlay {
    align-items: center;
  }

  .modal {
    border-radius: var(--radius-lg);
  }
}

.modal h2 {
  margin: 0 0 16px;
  font-size: 18px;
}

.modal input[type="text"],
.modal input[type="number"],
.modal input[type="date"],
.modal select {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 15px;
  margin-bottom: 10px;
  color: var(--color-primary);
  background: var(--color-surface);
}

.modal .chips {
  margin-bottom: 10px;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 8px;
}

.modal-actions .btn-secondary,
.modal-actions .btn-primary {
  flex: 1;
  width: auto;
}