:root {
  --bg: #FAF8F3;
  --bg-elevated: #FFFFFF;
  --bg-inset: #26473A;
  --bg-inset-hover: #315A4A;
  --border: #E4E0D4;
  --border-strong: #D6D0BF;

  --text-primary: #1D2B25;
  --text-muted: #6B7268;
  --text-on-inset: #FAF8F3;
  --text-on-inset-muted: rgba(250, 248, 243, 0.62);

  --ledger-green: #3C6E5D;
  --ledger-green-soft: rgba(60, 110, 93, 0.12);
  --ochre: #C68B3D;
  --ochre-soft: rgba(198, 139, 61, 0.14);
  --muted-red: #A6483A;
  --muted-red-soft: rgba(166, 72, 58, 0.12);

  --shadow-sm: 0 1px 2px rgba(20, 36, 44, 0.06), 0 1px 1px rgba(20, 36, 44, 0.04);
  --shadow-md: 0 8px 24px rgba(20, 36, 44, 0.08);
  --shadow-lg: 0 24px 56px rgba(20, 36, 44, 0.14);
  --chart-grid: #E4E0D4;

  --font-heading: 'Lora', Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #10151A;
  --bg-elevated: #1A2127;
  --bg-inset: #142B22;
  --bg-inset-hover: #1C3A2E;
  --border: #2A343B;
  --border-strong: #3A464E;

  --text-primary: #EDEAE1;
  --text-muted: #8E9791;
  --text-on-inset: #F5F2EA;
  --text-on-inset-muted: rgba(245, 242, 234, 0.55);

  --ledger-green: #5FB498;
  --ledger-green-soft: rgba(95, 180, 152, 0.16);
  --ochre: #E3AC63;
  --ochre-soft: rgba(227, 172, 99, 0.16);
  --muted-red: #DD8271;
  --muted-red-soft: rgba(221, 130, 113, 0.16);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 56px rgba(0, 0, 0, 0.5);
  --chart-grid: #2A343B;

  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.ledger-heading {
  font-family: var(--font-heading);
  font-weight: 600;
  margin: 0 0 4px 0;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.tabular-nums { font-variant-numeric: tabular-nums; }

/* ---------- Tally mark ---------- */

.tally-mark {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: currentColor;
}

/* ---------- Auth screens ---------- */

.auth-page {
  display: flex;
  min-height: 100vh;
}

.auth-panel { flex: 1 1 50%; min-width: 0; }

.auth-panel--brand {
  background: var(--bg-inset);
  color: var(--text-on-inset);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 40px;
  padding: 48px 56px;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-heading);
  font-size: 17px;
}

.auth-hero { max-width: 420px; margin: auto 0; }

.auth-hero h2 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.auth-hero p {
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-on-inset-muted);
  margin: 0 0 8px;
}

.auth-preview-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid rgba(250, 248, 243, 0.14);
}

.auth-preview-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(250, 248, 243, 0.14);
  font-size: 14px;
}

.auth-preview-list__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ochre);
  flex-shrink: 0;
}

.auth-preview-list__name { flex: 1; }
.auth-preview-list__amount { font-family: var(--font-mono); }

.auth-panel__footnote {
  font-size: 12px;
  color: var(--text-on-inset-muted);
  margin: 0;
}

.auth-panel--form {
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.auth-form-wrap { width: 100%; max-width: 380px; }

.auth-form-wrap .ledger-heading { font-size: 30px; }

.auth-sub {
  color: var(--text-muted);
  margin: 0 0 28px 0;
  font-size: 15px;
}

.auth-form { display: flex; flex-direction: column; gap: 6px; }

.auth-form label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 16px;
}

.auth-field-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 16px;
}

.auth-field-label-row label { margin-top: 0; }

.auth-form__forgot {
  font-size: 12px;
  color: var(--text-muted);
  text-decoration: none;
}

.auth-form__forgot:hover { color: var(--ledger-green); }

.auth-form input {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elevated);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 14px;
  margin-top: 6px;
  color: var(--text-primary);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.auth-form input::placeholder { color: var(--text-muted); opacity: 0.7; }

.auth-form input:focus {
  outline: none;
  border-color: var(--ledger-green);
  box-shadow: 0 0 0 3px var(--ledger-green-soft);
}

.btn--block {
  width: 100%;
  padding: 13px 18px;
  font-size: 15px;
  font-weight: 600;
}

.auth-switch {
  margin-top: 24px;
  font-size: 14px;
  color: var(--text-muted);
  text-align: center;
}

.auth-switch a { color: var(--ledger-green); font-weight: 500; }

@media (max-width: 760px) {
  .auth-panel--brand { display: none; }
  .auth-panel--form { flex: 1 1 100%; min-height: 100vh; }
}

/* ---------- Buttons ---------- */

.btn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--bg-inset);
  color: var(--text-on-inset);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--bg-inset-hover);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-primary);
}

.btn--ghost:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.btn--accent {
  background: linear-gradient(135deg, var(--ledger-green), #2C5747);
  color: #FAF8F3;
  box-shadow: var(--shadow-sm);
}

.btn--accent:hover { box-shadow: var(--shadow-md); }

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

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

.rail {
  width: 208px;
  background: var(--bg-inset);
  color: var(--text-on-inset);
  display: flex;
  flex-direction: column;
  padding: 24px 18px;
  flex-shrink: 0;
}

.rail-brand {
  font-family: var(--font-heading);
  font-size: 20px;
  margin-bottom: 40px;
  padding: 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rail-brand .tally-mark { width: 18px; height: 18px; color: var(--text-on-inset); }

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

.rail-nav__item {
  font-size: 14px;
  border-radius: 8px;
  margin-bottom: 2px;
}

.rail-nav__item a {
  color: var(--text-on-inset-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.rail-nav__item a:hover {
  color: var(--text-on-inset);
  background: rgba(250, 248, 243, 0.06);
}

.rail-nav__item--active a {
  color: var(--text-on-inset);
  background: rgba(250, 248, 243, 0.09);
  border-left-color: var(--ledger-green);
  font-weight: 500;
}

.rail-nav__icon { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.9; }

.rail-footer {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid rgba(250, 248, 243, 0.1);
}

.rail-logout {
  color: var(--text-on-inset-muted);
  font-size: 13px;
  text-decoration: none;
  padding: 0 12px;
  transition: color 0.15s ease;
}

.rail-logout:hover { color: var(--text-on-inset); }

/* ---------- Theme toggle ---------- */

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(250, 248, 243, 0.06);
  border: 1px solid rgba(250, 248, 243, 0.12);
  border-radius: 999px;
  padding: 4px;
  cursor: pointer;
  margin: 0 12px;
  width: fit-content;
}

.theme-toggle__option {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 24px;
  border-radius: 999px;
  color: var(--text-on-inset-muted);
  transition: background-color 0.15s ease, color 0.15s ease;
}

.theme-toggle__option svg { width: 14px; height: 14px; }

.theme-toggle__option--active {
  background: var(--ledger-green);
  color: #FAF8F3;
}

.main {
  flex: 1;
  padding: 32px 40px 48px;
  max-width: 980px;
}

.main-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.main-header .ledger-heading { font-size: 27px; }

.main-sub { color: var(--text-muted); margin: 0; font-size: 14px; }

.main-header__actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.month-select {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-radius: 8px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.month-select:hover { border-color: var(--border-strong); }
.month-select:focus { outline: none; border-color: var(--ledger-green); box-shadow: 0 0 0 3px var(--ledger-green-soft); }

/* ---------- Stat cards ---------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}

.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }

.stat-card--clickable { cursor: pointer; }

.stat-card__label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.stat-card__value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.15;
}

.stat-card__sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

.stat-card__delta {
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 7px;
  border-radius: 999px;
}

.stat-card__delta--up { background: var(--muted-red-soft); color: var(--muted-red); }
.stat-card__delta--down { background: var(--ledger-green-soft); color: var(--ledger-green); }

/* ---------- Total banner (prominent, at top) ---------- */

.total-banner-card {
  background: linear-gradient(135deg, var(--bg-inset), var(--bg-inset-hover));
  color: var(--text-on-inset);
  border-radius: 14px;
  padding: 22px 26px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
  box-shadow: var(--shadow-md);
}

.total-banner-card__label {
  font-size: 13px;
  color: var(--text-on-inset-muted);
}

.total-banner-card__amount {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* ---------- Chart cards ---------- */

.chart-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
  align-items: stretch;
}

.chart-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 22px 12px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
  min-width: 0;
}

.chart-grid .chart-card { margin-bottom: 0; }

.chart-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.chart-card__title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.chart-card__meta {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.chart-card--donut { display: flex; flex-direction: column; }
.chart-card--donut .chart-card__canvas-wrap {
  position: relative;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 190px;
}

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 12px;
  max-height: 120px;
  overflow-y: auto;
}

.chart-legend__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.chart-legend__item--clickable {
  cursor: pointer;
  border-radius: 6px;
  padding: 2px 6px;
  margin: 0 -6px;
  transition: background-color 0.12s ease;
}

.chart-legend__item--clickable:hover {
  background: var(--ledger-green-soft);
}

.chart-legend__swatch {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.chart-legend__name { flex: 1; color: var(--text-primary); }
.chart-legend__value { font-family: var(--font-mono); }

/* ---------- Filter dropdown ---------- */

.filter-dropdown {
  position: relative;
}

.filter-panel {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 260px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  z-index: 30;
  box-shadow: var(--shadow-lg);
}

.filter-panel__section {
  margin-bottom: 18px;
}

.filter-panel__section:last-child {
  margin-bottom: 0;
}

.filter-panel__select {
  width: 100%;
}

.filter-panel__label {
  font-size: 12px;
  color: var(--text-muted);
}

.filter-panel__label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.filter-panel__quick-actions {
  display: flex;
  gap: 10px;
}

.filter-quick-link {
  background: none;
  border: none;
  padding: 0;
  font-size: 12px;
  color: var(--ledger-green);
  cursor: pointer;
  text-decoration: underline;
}

.category-checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 220px;
  overflow-y: auto;
}

.category-checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  cursor: pointer;
}

.category-checkbox-item__swatch {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ---------- Statement blocks (ruled sections, not cards) ---------- */

.statement-block {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.statement-block__label {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.tips-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tips-list li {
  font-size: 14px;
  line-height: 1.5;
  padding: 10px 14px;
  border-left: 2px solid var(--ochre);
  background: var(--ochre-soft);
  border-radius: 0 8px 8px 0;
}

/* ---------- Transactions table ---------- */

.txn-table-wrap {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.txn-table th {
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 500;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.txn-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 13px;
}

.txn-table tbody tr {
  transition: background-color 0.12s ease;
}

.txn-table tbody tr:hover {
  background: var(--ledger-green-soft);
}

.txn-table tbody tr:last-child td { border-bottom: none; }

.txn-table td:nth-child(2) {
  font-family: var(--font-body);
}

.txn-amount { text-align: right; font-weight: 500; }

.category-select {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.empty-state {
  color: var(--text-muted);
  font-size: 14px;
  padding: 32px 0;
  text-align: center;
}

/* ---------- Categories page ---------- */

.inline-form {
  display: flex;
  gap: 10px;
  align-items: center;
}

.inline-form input[type="text"] {
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  padding: 8px 2px;
  flex: 1;
  max-width: 240px;
  color: var(--text-primary);
}

.inline-form input[type="text"]:focus {
  outline: none;
  border-bottom: 2px solid var(--ledger-green);
}

.inline-form input[type="color"] {
  width: 34px;
  height: 34px;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: 8px;
  overflow: hidden;
}

.category-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elevated);
  margin-bottom: 8px;
  transition: box-shadow 0.15s ease;
}

.category-row:hover { box-shadow: var(--shadow-sm); }
.category-row:last-child { margin-bottom: 0; }

.category-swatch {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 4px var(--border);
}

.category-name-input {
  border: none;
  background: transparent;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  width: 140px;
  padding: 4px 2px;
  flex-shrink: 0;
  color: var(--text-primary);
}

.category-name-input:disabled {
  color: var(--text-muted);
}

.category-name-input:not(:disabled):focus {
  outline: none;
  border-bottom: 1px solid var(--ledger-green);
}

.rules-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  flex: 1;
}

.rule-chip {
  background: var(--border);
  border-radius: 12px;
  padding: 3px 8px 3px 10px;
  font-size: 12px;
  font-family: var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-primary);
}

.rule-chip__remove {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 13px;
  padding: 0;
  line-height: 1;
}

.rule-input {
  border: none;
  border-bottom: 1px dashed var(--border);
  background: transparent;
  font-size: 12px;
  font-family: var(--font-body);
  padding: 4px 2px;
  width: 180px;
  color: var(--text-primary);
}

.rule-input:focus {
  outline: none;
  border-bottom: 1px solid var(--ledger-green);
}

.category-delete {
  font-size: 12px;
  padding: 5px 12px;
  flex-shrink: 0;
}

.category-view-link {
  font-size: 12px;
  padding: 5px 12px;
  flex-shrink: 0;
  text-decoration: none;
  white-space: nowrap;
}

/* ---------- Security / MFA ---------- */

.security-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 14px;
}

.security-badge {
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--muted-red-soft);
  color: var(--muted-red);
  flex-shrink: 0;
}

.security-badge--on {
  background: var(--ledger-green-soft);
  color: var(--ledger-green);
}

.security-form {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.security-form input {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elevated);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 14px;
  color: var(--text-primary);
  min-width: 0;
  flex: 1 1 180px;
  max-width: 240px;
}

.security-form input:focus {
  outline: none;
  border-color: var(--ledger-green);
  box-shadow: 0 0 0 3px var(--ledger-green-soft);
}

.code-input {
  font-family: var(--font-mono) !important;
  letter-spacing: 0.08em;
}

.btn--danger { color: var(--muted-red); }
.btn--danger:hover { border-color: var(--muted-red); }

.mfa-qr {
  width: 200px;
  height: 200px;
  padding: 8px;
  background: #FFFFFF; /* QR codes need a light background to scan, even in dark mode */
  border-radius: 12px;
  margin-bottom: 16px;
}

.mfa-qr svg { width: 100%; height: 100%; display: block; }

.mfa-secret {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  padding: 8px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  word-break: break-all;
}

.mfa-secret-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

/* The otpauth:// button only helps when the authenticator is on the same
   device, i.e. phones and tablets. Desktops get the QR code as step 1. */
.mfa-open-app,
.mfa-step--touch { display: none; }

@media (pointer: coarse) {
  .mfa-open-app { display: inline-block; margin-bottom: 20px; }
  .mfa-step--touch { display: block; }
  .mfa-step--desktop { display: none; }
}

.mfa-codes {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 10px 32px;
  margin: 0 0 24px;
  padding-left: 22px;
  font-family: var(--font-mono);
  font-size: 15px;
}

.mfa-codes li { color: var(--text-primary); }
.mfa-codes li::marker { color: var(--text-muted); }

/* ---------- Flash messages ---------- */

.flash-stack {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flash {
  padding: 12px 18px;
  border-radius: 8px;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  animation: flash-in 0.2s ease;
}

@keyframes flash-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.flash--error {
  background: var(--muted-red);
  color: #FAF8F3;
}

.flash--success {
  background: var(--ledger-green);
  color: #FAF8F3;
}

/* ---------- Bottom tab bar (mobile primary nav) ---------- */

.bottom-nav {
  display: none;
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 4px 8px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
}

.bottom-nav__item svg { width: 22px; height: 22px; }

.bottom-nav__item--active { color: var(--ledger-green); }

/* ---------- Mobile ---------- */

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .chart-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .app-shell { flex-direction: column; }
  .rail {
    width: 100%;
    flex-direction: row;
    align-items: center;
    padding: 14px 16px;
  }
  .rail-brand { margin-bottom: 0; }
  .rail-nav { display: none; }
  .rail-footer {
    flex-direction: row;
    border-top: none;
    padding-top: 0;
    margin-left: auto;
  }
  .rail-logout { padding: 0; }

  .bottom-nav { display: flex; }
  .main { padding: 20px 16px calc(84px + env(safe-area-inset-bottom, 0)); }

  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .stat-card { padding: 14px 16px; }
  .stat-card__value { font-size: 20px; }

  /* Comfortable tap targets */
  .btn { padding: 12px 18px; font-size: 15px; }
  .month-select { padding: 11px 12px; }
  .category-select { padding: 8px 10px; }
  .filter-panel { width: min(260px, calc(100vw - 32px)); }

  .txn-table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .txn-table { min-width: 560px; }

  .category-row { flex-wrap: wrap; }
  .inline-form input[type="text"] { min-width: 0; }
}

@media (max-width: 420px) {
  .stat-grid { grid-template-columns: 1fr; }
}