:root {
  --bg: #0e1116;
  --bg-2: #161b22;
  --bg-3: #1f2630;
  --border: #2a333f;
  --text: #e6edf3;
  --muted: #8b96a7;
  --accent: #4ea1ff;
  --accent-2: #7c5cff;
  --good: #3fb950;
  --bad: #f85149;
  --warn: #d29922;
  --radius: 10px;
  --shadow: 0 4px 18px rgba(0,0,0,.35);
}
[data-theme="light"] {
  --bg: #f6f8fa;
  --bg-2: #ffffff;
  --bg-3: #eef1f5;
  --border: #d0d7de;
  --text: #1f2328;
  --muted: #656d76;
  --shadow: 0 2px 10px rgba(0,0,0,.08);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; font-size: 14px; }
h1, h2, h3, h4 { margin: 0 0 12px; }
h1 { font-size: 18px; }
h3 { font-size: 15px; }
p { margin: 8px 0; }
.muted { color: var(--muted); font-size: 13px; }
a { color: var(--accent); }

.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px; background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.tabs { display: flex; gap: 4px; flex: 1; }
.tab {
  background: transparent; color: var(--muted); border: 0;
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
  font-size: 13px; font-weight: 500;
}
.tab:hover { background: var(--bg-3); color: var(--text); }
.tab.active { background: var(--accent); color: #fff; }

main { padding: 24px; max-width: 1400px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card.danger { border-color: var(--bad); }

.filter-bar {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  background: var(--bg-2); padding: 12px 14px;
  border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 16px;
}
.filter-bar label { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); gap: 4px; }

input, select, button, textarea {
  background: var(--bg-3); color: var(--text);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 7px 10px; font-size: 13px; font-family: inherit;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.btn { background: var(--accent); color: #fff; border: 0; padding: 8px 14px; border-radius: 6px; cursor: pointer; font-weight: 500; }
.btn:hover { filter: brightness(1.1); }
.btn.ghost { background: var(--bg-3); color: var(--text); }
.btn.danger-btn { background: var(--bad); }

.kpi-row { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.kpi-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.kpi-value { font-size: 22px; font-weight: 600; margin-top: 4px; }
.kpi-value.negative { color: var(--bad); }
.positive { color: var(--good); }
.negative { color: var(--bad); }

.chart-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.chart-grid .card.wide { grid-column: 1 / -1; }
.chart-grid canvas { max-height: 260px; }

.drop-zone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 40px; text-align: center; color: var(--muted);
  cursor: pointer; transition: all .15s;
}
.drop-zone:hover, .drop-zone.drag { background: var(--bg-3); border-color: var(--accent); color: var(--text); }
.import-options { display: flex; gap: 12px; margin-top: 12px; }
.import-options label { display: flex; flex-direction: column; font-size: 11px; color: var(--muted); flex: 1; gap: 4px; }

#import-preview table, #tx-table, #rules-table, #default-rules-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
#import-preview th, #import-preview td,
#tx-table th, #tx-table td,
#rules-table th, #rules-table td,
#default-rules-table th, #default-rules-table td {
  padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left;
}
#tx-table th { cursor: pointer; user-select: none; color: var(--muted); font-weight: 500; }
#tx-table th:hover { color: var(--text); }
#tx-table .right, #tx-table th.right { text-align: right; }
#tx-table tr:hover td { background: var(--bg-3); }
.tx-table-wrap { background: var(--bg-2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.pager { display: flex; justify-content: center; align-items: center; gap: 16px; padding: 12px; border-top: 1px solid var(--border); }
.cat-chip {
  background: var(--bg-3); border: 1px solid var(--border);
  padding: 3px 8px; border-radius: 999px; font-size: 12px;
  cursor: pointer; display: inline-block;
}
.cat-chip:hover { border-color: var(--accent); }

.rule-form { display: flex; gap: 8px; margin-bottom: 12px; }
.rule-form input { flex: 1; }

.budget-item { display: grid; grid-template-columns: 140px 1fr 100px 60px; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.budget-item:last-child { border-bottom: 0; }
.budget-bar { background: var(--bg-3); border-radius: 6px; height: 10px; overflow: hidden; }
.budget-bar-fill { height: 100%; background: var(--good); transition: width .3s; }
.budget-bar-fill.warn { background: var(--warn); }
.budget-bar-fill.over { background: var(--bad); }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(100px);
  background: var(--bg-3); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 16px; box-shadow: var(--shadow); opacity: 0;
  transition: all .2s;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

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

/* Tablet */
@media (max-width: 768px) {
  main { padding: 12px; }
  .topbar { flex-direction: column; align-items: stretch; gap: 10px; padding: 10px 12px; }
  .topbar h1 { font-size: 16px; }
  .tabs { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
  .tab { min-height: 44px; padding: 10px 14px; flex-shrink: 0; font-size: 13px; }
  .filter-bar { gap: 8px; padding: 10px; }
  .filter-bar label { flex: 1 1 calc(50% - 4px); }
  .kpi-row { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .kpi { padding: 10px 12px; }
  .kpi-value { font-size: 18px; }
  .card { padding: 14px; }
  .chart-grid canvas { max-height: 220px; }
  /* Touch targets */
  .btn, button, select, input[type="date"], input[type="number"], input[type="search"], input[type="text"] {
    min-height: 44px; font-size: 14px;
  }
  .tab { min-height: 44px; }
  /* Transactions table — horizontal scroll instead of squeezing */
  .tx-table-wrap { overflow-x: auto; }
  #tx-table { min-width: 560px; font-size: 12px; }
  #tx-table th, #tx-table td { padding: 10px 8px; }
  .cat-chip { min-height: 28px; padding: 6px 10px; display: inline-flex; align-items: center; }
  /* Budgets stack */
  .budget-item { grid-template-columns: 1fr; gap: 8px; padding: 12px 0; }
  .rule-form { flex-direction: column; }
  .rule-form input, .rule-form button { width: 100%; }
  .drop-zone { padding: 24px; }
  .import-options { flex-direction: column; }
}

/* Phone */
@media (max-width: 480px) {
  body { font-size: 13px; }
  main { padding: 8px; }
  .topbar { padding: 8px 10px; }
  .topbar h1 { font-size: 15px; }
  .tab { padding: 10px 12px; font-size: 12px; min-height: 44px; }
  .filter-bar { padding: 8px; gap: 6px; }
  .filter-bar label { flex: 1 1 100%; font-size: 11px; }
  .filter-bar .btn { flex: 1 1 calc(50% - 3px); }
  .kpi-row { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .kpi { padding: 8px 10px; }
  .kpi-label { font-size: 10px; }
  .kpi-value { font-size: 16px; }
  .card { padding: 12px; margin-bottom: 10px; }
  .card h3 { font-size: 13px; }
  .chart-grid { gap: 10px; }
  .chart-grid canvas { max-height: 180px; }
  #tx-table { min-width: 500px; font-size: 11px; }
  #tx-table th, #tx-table td { padding: 8px 6px; }
  .pager { gap: 8px; padding: 10px; font-size: 12px; }
  .drop-zone { padding: 18px; font-size: 12px; }
  .drop-zone p { margin: 0; }
  /* Compact KPI row to single row on tiny screens — show top 3 */
  .kpi:nth-child(4), .kpi:nth-child(5) { display: none; }
  /* Ensure all touch targets remain 44px */
  .btn, button, select, input { min-height: 44px; font-size: 13px; }
}