:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e6e8ec;
  --text: #1c2430;
  --muted: #6b7280;
  --primary: #2563d9;
  --expense: #e0553b;   /* 支出：橙红 */
  --income: #2f9e63;    /* 收入：绿 */
  --warn: #d97706;
  --good: #2f9e63;
  --info: #2563d9;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
}

/* ===== 顶栏 ===== */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex; align-items: center; gap: 16px;
  box-shadow: var(--shadow);
}
.brand { font-size: 17px; font-weight: 700; white-space: nowrap; }
.brand .dot { color: var(--primary); }

.quick-add {
  flex: 1; display: flex; gap: 8px; max-width: 560px;
}
.quick-add input {
  flex: 1; padding: 9px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px; outline: none; background: var(--bg);
}
.quick-add input:focus { border-color: var(--primary); background: #fff; }
.quick-add button {
  padding: 9px 18px; border: 0; border-radius: 8px; background: var(--primary);
  color: #fff; font-size: 14px; cursor: pointer; white-space: nowrap;
}
.quick-add button:disabled { opacity: .5; cursor: not-allowed; }

.topbar-meta { margin-left: auto; display: flex; gap: 12px; align-items: center; color: var(--muted); font-size: 12.5px; }
.live-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--income); margin-right: 5px; }
.live-dot.off { background: #cbd5e1; }

/* ===== 主体 ===== */
main { max-width: 1080px; margin: 0 auto; padding: 20px; }

.receipt-bar {
  min-height: 0; margin-bottom: 16px;
}
#receipt {
  background: #eef4ff; color: #1e3a8a; border: 1px solid #d7e3ff;
  padding: 10px 14px; border-radius: 8px; font-size: 13.5px; display: none;
}
#receipt.show { display: block; }
#receipt.err { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }

/* 概览卡片 */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; box-shadow: var(--shadow);
}
.card .label { color: var(--muted); font-size: 12.5px; }
.card .value { font-size: 22px; font-weight: 700; margin-top: 4px; }
.card .value.expense { color: var(--expense); }
.card .value.income { color: var(--income); }
.card .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

/* 信号 */
.signals { margin-bottom: 16px; }
.signal {
  display: flex; gap: 8px; align-items: flex-start;
  padding: 9px 12px; border-radius: 8px; margin-bottom: 6px; font-size: 13px;
  border: 1px solid var(--border); background: var(--card);
}
.signal .badge { flex-shrink: 0; font-size: 11px; padding: 1px 8px; border-radius: 999px; color: #fff; margin-top: 2px; }
.signal.warn  .badge { background: var(--warn); }
.signal.good  .badge { background: var(--good); }
.signal.info  .badge { background: var(--info); }

/* 图表区 */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.card-head h2 { font-size: 15px; margin: 0; }
.seg { display: flex; gap: 4px; }
.seg button {
  border: 1px solid var(--border); background: #fff; color: var(--muted);
  padding: 3px 10px; border-radius: 6px; font-size: 12px; cursor: pointer;
}
.seg button.on { background: var(--primary); color: #fff; border-color: var(--primary); }

.chart-line svg, .chart-pie svg { display: block; width: 100%; height: auto; }
.legend { list-style: none; margin: 8px 0 0; padding: 0; font-size: 12.5px; }
.legend li { display: flex; align-items: center; gap: 6px; margin-bottom: 4px; color: var(--muted); }
.legend .swatch { width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }
.legend .cat { color: var(--text); }
.legend .pct { margin-left: auto; color: var(--muted); }

/* 流水表 */
.table-wrap { overflow-x: auto; }
table.tx { width: 100%; border-collapse: collapse; font-size: 13px; }
table.tx th, table.tx td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
table.tx th { color: var(--muted); font-weight: 600; font-size: 12px; }
table.tx .num { text-align: right; font-variant-numeric: tabular-nums; }
table.tx .num.expense { color: var(--expense); }
table.tx .num.income { color: var(--income); }
table.tx .num.transfer { color: var(--muted); }
.tag { font-size: 11px; padding: 1px 6px; border-radius: 5px; background: #f1f3f5; color: var(--muted); }
.void-btn { border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 12px; }
.void-btn:hover { color: var(--expense); }

.link-btn { color: var(--primary); text-decoration: none; font-size: 12.5px; }
.empty { color: var(--muted); text-align: center; padding: 24px 0; }

@media (max-width: 760px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  .topbar-meta { width: 100%; justify-content: flex-end; }
}