/* ---------- Design tokens ---------- */
:root {
  --bg: #f4f5f7;
  --bg-elevated: #ffffff;
  --bg-subtle: #edeef2;
  --bg-hover: #f0f1f5;
  --text: #1a1d23;
  --text-muted: #6b7280;
  --border: #e2e4e9;
  --accent: #4f6ef7;
  --accent-hover: #3d5ce0;
  --accent-contrast: #ffffff;
  --accent-soft: #eaefff;
  --danger: #d8393f;
  --danger-bg: #fdecec;
  --success: #1f9254;
  --success-bg: #e9f8ef;
  --warning: #b6780a;
  --warning-bg: #fdf3e0;
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(20, 22, 30, 0.08), 0 1px 2px rgba(20, 22, 30, 0.06);
  --shadow-lg: 0 12px 32px rgba(20, 22, 30, 0.16), 0 4px 12px rgba(20, 22, 30, 0.08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14161c;
    --bg-elevated: #1c1f27;
    --bg-subtle: #23262f;
    --bg-hover: #292d38;
    --text: #e8eaef;
    --text-muted: #9aa0ac;
    --border: #2d3039;
    --accent: #7c93ff;
    --accent-hover: #93a6ff;
    --accent-contrast: #0d1020;
    --accent-soft: #232a4a;
    --danger: #ff7a7e;
    --danger-bg: #3a1e20;
    --success: #4bc987;
    --success-bg: #163827;
    --warning: #f5b64e;
    --warning-bg: #3a2c10;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #14161c;
  --bg-elevated: #1c1f27;
  --bg-subtle: #23262f;
  --bg-hover: #292d38;
  --text: #e8eaef;
  --text-muted: #9aa0ac;
  --border: #2d3039;
  --accent: #7c93ff;
  --accent-hover: #93a6ff;
  --accent-contrast: #0d1020;
  --accent-soft: #232a4a;
  --danger: #ff7a7e;
  --danger-bg: #3a1e20;
  --success: #4bc987;
  --success-bg: #163827;
  --warning: #f5b64e;
  --warning-bg: #3a2c10;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--accent); }
h1, h2, h3, h4 { margin: 0 0 4px; font-weight: 650; }
p { margin: 0 0 8px; }
[hidden] { display: none !important; }

/* ---------- Layout ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.app-header__brand {
  font-weight: 700;
  font-size: 16px;
  margin-right: auto;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}
.app-header__nav {
  display: flex;
  gap: 4px;
}
.app-header__nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}
.app-header__nav a.active,
.app-header__nav a:hover {
  color: var(--text);
  background: var(--bg-subtle);
}
.app-header__controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.app-header__user {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}
.app-main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 72px;
}

.mobile-tabbar {
  display: none;
}
@media (max-width: 720px) {
  .app-header__nav { display: none; }
  .mobile-tabbar {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 30;
    background: var(--bg-elevated);
    border-top: 1px solid var(--border);
    padding: 6px 4px calc(6px + env(safe-area-inset-bottom));
  }
  .mobile-tabbar a {
    flex: 1;
    text-align: center;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 11px;
    padding: 6px 2px;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
  }
  .mobile-tabbar a .icon { font-size: 18px; }
  .mobile-tabbar a.active { color: var(--accent); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, opacity 0.12s;
  background: var(--bg-subtle);
  color: var(--text);
}
.btn:hover { background: var(--bg-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: var(--accent-contrast); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-danger:hover { filter: brightness(0.95); }
.btn-ghost { background: transparent; border-color: var(--border); }
.btn-icon { padding: 6px 8px; }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-block { width: 100%; }

/* ---------- Forms ---------- */
label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 4px; }
.field { margin-bottom: 14px; }
input, select, textarea {
  width: 100%;
  font-family: inherit;
  font-size: 15px;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { resize: vertical; min-height: 60px; }
.field-row { display: flex; gap: 10px; }
.field-row > .field { flex: 1; min-width: 0; }
.field-error { color: var(--danger); font-size: 12px; margin-top: 4px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
.checkbox-row label { margin: 0; }
select.select-compact, .icon-select {
  padding: 6px 8px;
  font-size: 13px;
  width: auto;
}

/* ---------- Cards / panels ---------- */
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 14px; }
.card-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.grid {
  display: grid;
  gap: 14px;
}
.grid-stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.stat-tile .stat-value { font-size: 26px; font-weight: 700; line-height: 1.2; }
.stat-tile .stat-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.stat-tile .stat-delta { font-size: 12px; font-weight: 600; margin-top: 6px; }
.stat-delta.up { color: var(--danger); }
.stat-delta.down { color: var(--success); }

/* ---------- Filters bar ---------- */
.filters-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-end;
  margin-bottom: 14px;
}
.filters-bar .field { margin-bottom: 0; }
.preset-group {
  display: flex;
  gap: 4px;
  background: var(--bg-subtle);
  padding: 3px;
  border-radius: var(--radius-sm);
}
.preset-group button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 10px;
  border-radius: 5px;
  cursor: pointer;
}
.preset-group button.active { background: var(--bg-elevated); color: var(--text); box-shadow: var(--shadow); }
.search-input { min-width: 180px; flex: 1; }

.cat-filter { position: relative; }
.cat-filter > summary { list-style: none; cursor: pointer; }
.cat-filter > summary::-webkit-details-marker { display: none; }
.cat-filter__panel {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 40;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  min-width: 230px;
  max-height: 300px;
  overflow-y: auto;
}
.cat-filter__panel .cat-option {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 400;
  font-size: 14px;
  color: var(--text);
  padding: 6px 4px;
  cursor: pointer;
  margin: 0;
  border-radius: var(--radius-sm);
}
.cat-filter__panel .cat-option:hover { background: var(--bg-hover); }
.cat-filter__panel .cat-option input { width: auto; }
.cat-filter__panel .cat-filter__actions {
  display: flex;
  justify-content: space-between;
  padding: 6px 4px 2px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}
.cat-filter__panel .cat-filter__actions button {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  padding: 4px;
}

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; }
table.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.data-table th, table.data-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data-table th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.02em; }
table.data-table tbody tr:hover { background: var(--bg-hover); }
table.data-table td.comment-cell { white-space: normal; max-width: 260px; color: var(--text-muted); }
.amount-cell { text-align: right; font-variant-numeric: tabular-nums; }
.amount-secondary { display: block; font-size: 11px; color: var(--text-muted); }
.row-actions { display: flex; gap: 4px; justify-content: flex-end; }
.category-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; }
.category-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; display: inline-block; }

@media (max-width: 720px) {
  table.data-table thead { display: none; }
  table.data-table, table.data-table tbody, table.data-table tr, table.data-table td { display: block; width: 100%; }
  table.data-table tr {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 10px;
    padding: 10px 12px;
    background: var(--bg-elevated);
  }
  table.data-table td {
    border-bottom: none;
    padding: 4px 0;
    white-space: normal;
    display: flex;
    justify-content: space-between;
    gap: 12px;
  }
  table.data-table td::before {
    content: attr(data-label);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    flex-shrink: 0;
  }
  table.data-table td.row-actions-cell { justify-content: flex-end; }
  table.data-table td .row-actions { justify-content: flex-end; width: 100%; }
}

/* ---------- Pagination ---------- */
.pagination { display: flex; align-items: center; gap: 8px; justify-content: center; margin-top: 14px; font-size: 13px; color: var(--text-muted); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 12, 18, 0.5);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  padding: 0;
}
.modal {
  background: var(--bg-elevated);
  width: 100%;
  max-width: 480px;
  max-height: 92vh;
  overflow-y: auto;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 18px;
  box-shadow: var(--shadow-lg);
}
@media (min-width: 640px) {
  .modal-backdrop { align-items: center; padding: 20px; }
  .modal { border-radius: var(--radius-lg); }
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.collapsible summary { cursor: pointer; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 10px; }

/* ---------- Alerts / states ---------- */
.alert { padding: 10px 14px; border-radius: var(--radius-sm); font-size: 13px; margin-bottom: 12px; }
.alert-danger { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); }
.alert-warning { background: var(--warning-bg); color: var(--warning); }
.empty-state { text-align: center; padding: 48px 16px; color: var(--text-muted); }
.loading-state { text-align: center; padding: 40px 16px; color: var(--text-muted); font-size: 13px; }
.spinner {
  width: 20px; height: 20px; border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.toast-stack { position: fixed; bottom: 76px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 8px; width: min(92vw, 360px); }
.toast { background: var(--bg-elevated); border: 1px solid var(--border); box-shadow: var(--shadow-lg); border-radius: var(--radius); padding: 10px 14px; font-size: 13px; }
.toast.danger { border-color: var(--danger); color: var(--danger); }
.toast.success { border-color: var(--success); color: var(--success); }
@media (min-width: 720px) { .toast-stack { bottom: 20px; } }

/* ---------- Progress bars ---------- */
.budget-row { margin-bottom: 14px; }
.budget-row__head { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 5px; }
.budget-row__head .name { font-weight: 600; display: flex; align-items: center; gap: 6px; }
.budget-row__head .amounts { color: var(--text-muted); }
.progress-track { height: 8px; background: var(--bg-subtle); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); border-radius: 4px; transition: width 0.2s; }
.progress-fill.over { background: var(--danger); }

/* ---------- Chart containers ---------- */
.chart-box { position: relative; height: 280px; }
.chart-box.small { height: 220px; }

/* ---------- Login page ---------- */
.login-page {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card { width: 100%; max-width: 360px; }
.login-card h1 { font-size: 20px; margin-bottom: 4px; }
.login-card .sub { color: var(--text-muted); font-size: 13px; margin-bottom: 20px; }

/* ---------- Utility ---------- */
.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.flex { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.mt-16 { margin-top: 16px; }
.mb-0 { margin-bottom: 0; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px; font-weight: 700; }
.badge.archived { background: var(--bg-subtle); color: var(--text-muted); }