:root {
  --bg: #F2F1EC;
  --panel: #FFFFFF;
  --panel-edge: #E1DFD3;
  --ink: #23281F;
  --ink-soft: #6B7268;
  --accent: #2F6F5E;
  --accent-ink: #FFFFFF;
  --accent-soft: #E3EEEA;
  --danger: #B3432E;
  --danger-soft: #F6E4DF;
  --upi: #2F6F5E;
  --card: #4C5FD5;
  --cash: #B7791F;
  --shadow: 0 1px 2px rgba(35, 40, 31, 0.06), 0 1px 0 rgba(35, 40, 31, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #181C17;
    --panel: #21261E;
    --panel-edge: #333A2E;
    --ink: #EAEFE5;
    --ink-soft: #9AA694;
    --accent: #6FBFA6;
    --accent-ink: #0F1A15;
    --accent-soft: #26362E;
    --danger: #E38B71;
    --danger-soft: #3A2620;
    --upi: #6FBFA6;
    --card: #8FA0F0;
    --cash: #E0AE55;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, "Segoe UI", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.45;
}

h1, h2, h3 {
  margin: 0;
  font-weight: 650;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.muted { color: var(--ink-soft); font-size: 13px; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--panel-edge);
  background: var(--panel);
}

.topbar h1 {
  font-size: 20px;
}

.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg);
  padding: 4px;
  border-radius: 8px;
}

.tab-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-weight: 600;
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 6px;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--panel);
  color: var(--ink);
  box-shadow: var(--shadow);
}

main {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tab-panel { display: none; flex-direction: column; gap: 16px; }
.tab-panel.active { display: flex; }

.card {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 10px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
}

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

.expense-form {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px 16px;
}

.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field-wide { grid-column: span 2; }
.field-actions {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  margin-top: 2px;
}

label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

.optional { font-weight: 400; text-transform: lowercase; }

input, select {
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--panel-edge);
  border-radius: 6px;
  padding: 8px 10px;
  width: 100%;
}

input:focus-visible, select:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.btn-primary, .btn-ghost {
  font: inherit;
  font-weight: 600;
  font-size: 13.5px;
  border-radius: 6px;
  padding: 9px 16px;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn-primary:hover { opacity: 0.9; }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--panel-edge);
}
.btn-ghost:hover { background: var(--bg); }

.form-error {
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13.5px;
  font-weight: 600;
  margin: 0;
}

.table-scroll { overflow-x: auto; }

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

th {
  text-align: left;
  font-size: 12px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  padding: 8px 10px;
  border-bottom: 1px solid var(--panel-edge);
  white-space: nowrap;
}

td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--panel-edge);
  vertical-align: middle;
  white-space: nowrap;
}

td.note-cell {
  white-space: normal;
  color: var(--ink-soft);
  max-width: 240px;
}

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

th.num, td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
}

.col-actions { width: 1%; }

.row-actions { display: flex; gap: 6px; }

.icon-btn {
  appearance: none;
  border: 1px solid var(--panel-edge);
  background: var(--panel);
  color: var(--ink-soft);
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  border-radius: 5px;
  padding: 4px 9px;
  cursor: pointer;
}
.icon-btn:hover { color: var(--ink); background: var(--bg); }
.icon-btn.danger:hover { color: var(--danger); border-color: var(--danger); background: var(--danger-soft); }

.payment-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 650;
}
.payment-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}
.payment-chip.upi { color: var(--upi); }
.payment-chip.card { color: var(--card); }
.payment-chip.cash { color: var(--cash); }

.empty-state {
  text-align: center;
  color: var(--ink-soft);
  padding: 28px 0 8px;
  font-size: 14px;
}

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

.segmented {
  display: flex;
  background: var(--bg);
  border-radius: 7px;
  padding: 3px;
  gap: 2px;
}
.segmented button {
  appearance: none;
  border: none;
  background: transparent;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  padding: 6px 12px;
  border-radius: 5px;
  cursor: pointer;
}
.segmented button.active {
  background: var(--panel);
  color: var(--ink);
  box-shadow: var(--shadow);
}

#report-date, #report-month {
  width: auto;
}

.report-controls .btn-ghost { margin-left: auto; }

.summary-grid {
  display: grid;
  grid-template-columns: auto 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.summary-total {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-right: 20px;
  border-right: 1px solid var(--panel-edge);
  min-width: 140px;
}
.summary-total strong {
  font-size: 26px;
  font-variant-numeric: tabular-nums;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
}

.summary-block h3 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

.chip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chip-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13.5px;
}

.chip-list .amount {
  font-variant-numeric: tabular-nums;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-weight: 600;
}

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

.auth-card {
  width: 100%;
  max-width: 360px;
  display: flex;
  flex-direction: column;
}

.auth-card h1 { font-size: 19px; }
.auth-card > .muted { margin: 4px 0 16px; }

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

.auth-form .btn-primary { width: 100%; margin-top: 2px; }

.auth-switch { margin-top: 16px; text-align: center; }
.auth-switch a { color: var(--accent); font-weight: 600; text-decoration: none; }
.auth-switch a:hover { text-decoration: underline; }

#auth-error { margin-top: 12px; }

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--ink-soft);
}

.user-badge strong { color: var(--ink); }

@media (max-width: 640px) {
  .expense-form { grid-template-columns: 1fr 1fr; }
  .field-wide { grid-column: span 2; }
  .summary-grid { grid-template-columns: 1fr; }
  .summary-total { border-right: none; border-bottom: 1px solid var(--panel-edge); padding-right: 0; padding-bottom: 14px; }
  .report-controls .btn-ghost { margin-left: 0; }
}