:root {
  --bg: #f5f5f5;
  --bg-card: #ffffff;
  --ink: #1d1d1f;
  --ink-soft: #6e6e73;
  --line: #e5e5ea;
  --line-strong: #d2d2d7;
  --accent: #1d1d1f;
  --accent-soft: #f0f0f2;
  --green: #3a6b4f;
  --green-bg: #eef3f0;
  --red: #8a4a42;
  --red-bg: #f5efee;
  --blue-muted: #5c6670;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", ui-monospace, "Cascadia Mono", "Menlo", "Consolas", monospace;
  --topbar-h: 52px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue-muted); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 1rem 3rem; }

/* ---------- Topbar ---------- */
.topbar {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 40;
}
.topbar-inner {
  max-width: 1040px; margin: 0 auto;
  padding: 0 1rem;
  min-height: var(--topbar-h);
  display: flex; align-items: center; gap: 0.75rem;
}
.brand {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -0.01em;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}
.brand-logo { width: 24px; height: 24px; flex-shrink: 0; }
.brand:hover { text-decoration: none; opacity: 0.75; }

.nav-scroll {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.nav-scroll::-webkit-scrollbar { display: none; }
.nav {
  display: flex; gap: 0.15rem; align-items: center;
  white-space: nowrap;
}
.nav a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
}
.nav a:hover { color: var(--ink); text-decoration: none; background: var(--accent-soft); }
.nav a.active {
  color: var(--ink);
  font-weight: 600;
  background: var(--accent-soft);
}

.nav-right {
  margin-left: auto;
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.82rem; color: var(--ink-soft);
  flex-shrink: 0;
}
.nav-cta {
  display: inline-flex; align-items: center;
  padding: 0.4rem 0.9rem !important;
  border-radius: 980px !important;
  background: var(--accent) !important;
  color: #fff !important;
  font-weight: 500 !important;
  font-size: 0.85rem !important;
  border: none !important;
}
.nav-cta:hover { opacity: 0.88; text-decoration: none !important; background: var(--accent) !important; }

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--ink);
  flex-shrink: 0;
}
.nav-toggle span {
  display: block; width: 16px; height: 1.5px; background: currentColor;
  position: relative;
}
.nav-toggle span::before, .nav-toggle span::after {
  content: ""; position: absolute; left: 0; width: 16px; height: 1.5px; background: currentColor;
}
.nav-toggle span::before { top: -5px; }
.nav-toggle span::after { top: 5px; }

.login-brand {
  display: flex; flex-direction: column; align-items: center;
  gap: 0.55rem; margin-bottom: 0.15rem;
}
.login-brand h1 { margin: 0; }

/* ---------- Sub-nav ---------- */
.subnav {
  display: flex; gap: 0.25rem; flex-wrap: wrap;
  margin: 0.15rem 0 1rem;
  padding: 0.2rem;
  background: var(--accent-soft);
  border-radius: 10px;
  width: fit-content;
  max-width: 100%;
}
.subnav a {
  border-radius: 8px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
}
.subnav a:hover { color: var(--ink); text-decoration: none; background: #fff; }
.subnav a.active {
  background: #fff;
  color: var(--ink);
  font-weight: 560;
  box-shadow: var(--shadow);
}

/* ---------- Cards / titles ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem 1.25rem;
  margin-bottom: 1rem;
}
.card h2, .card h3 {
  font-weight: 560;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.page-title {
  font-weight: 600;
  font-size: 1.55rem;
  margin: 1.35rem 0 0.85rem;
  letter-spacing: -0.02em;
}
.page-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; flex-wrap: wrap; margin-bottom: 0.15rem;
}
.page-head .page-title { margin: 1.35rem 0 0.5rem; }

.muted { color: var(--ink-soft); font-size: 0.88rem; }
.dot { color: var(--line-strong); margin: 0 0.35rem; }

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.stat {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.95rem 1.05rem;
  box-shadow: var(--shadow);
}
.stat .label { font-size: 0.78rem; color: var(--ink-soft); margin-bottom: 0.2rem; }
.stat .value {
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
  font-weight: 560;
}
.stat .value.income { color: var(--green); }
.stat .value.expense { color: var(--red); }
.stat .value.balance { color: var(--ink); }

/* ---------- Forms ---------- */
label { display: block; font-size: 0.82rem; color: var(--ink-soft); margin-bottom: 0.28rem; }
input[type=text], input[type=password], input[type=number], input[type=date],
input[type=file], select, textarea {
  width: 100%;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 0.92rem;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.form-row { margin-bottom: 0.85rem; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 0.75rem;
}
.btn {
  display: inline-block;
  padding: 0.48rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font-size: 0.88rem;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
}
.btn:hover { opacity: 0.9; text-decoration: none; }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { background: var(--accent-soft); }
.btn-danger {
  background: transparent;
  border-color: var(--line);
  color: var(--red);
}
.btn-sm { padding: 0.22rem 0.55rem; font-size: 0.78rem; }
.actions { display: flex; gap: 0.45rem; flex-wrap: wrap; align-items: center; }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.5rem 0.45rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data th { color: var(--ink-soft); font-weight: 500; font-size: 0.76rem; }
table.data tr:hover td { background: rgba(0, 0, 0, 0.015); }
.amount {
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  font-family: var(--font-mono), var(--font);
  white-space: nowrap;
  letter-spacing: -0.02em;
}
.amount.income { color: var(--green); }
.amount.expense { color: var(--red); }
.amount.transfer { color: var(--ink-soft); }
.badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--ink-soft);
}
.badge.income { background: var(--green-bg); color: var(--green); }
.badge.expense { background: var(--red-bg); color: var(--red); }
.badge.transfer { background: #f0f0f2; color: var(--ink-soft); }
.badge.off { background: #f0f0f2; color: #98989d; }

.note-cell {
  max-width: 14rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-soft);
}

/* ---------- Row menu (⋯) ---------- */
.row-menu { position: relative; display: inline-flex; }
.row-menu summary {
  list-style: none;
  cursor: pointer;
  border: 1px solid transparent;
  background: transparent;
  border-radius: 6px;
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-soft);
  font-size: 1.1rem;
  line-height: 1;
  user-select: none;
}
.row-menu summary::-webkit-details-marker { display: none; }
.row-menu summary:hover,
.row-menu[open] summary {
  background: var(--accent-soft);
  color: var(--ink);
  border-color: var(--line);
}
.row-menu-panel {
  position: absolute;
  right: 0; top: calc(100% + 2px);
  min-width: 7rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  padding: 0.25rem;
  z-index: 15;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.row-menu-panel a,
.row-menu-panel button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.4rem 0.65rem;
  border: none;
  background: transparent;
  border-radius: 6px;
  font-size: 0.84rem;
  color: var(--ink);
  cursor: pointer;
  font-family: inherit;
  text-decoration: none;
}
.row-menu-panel a:hover,
.row-menu-panel button:hover { background: var(--accent-soft); text-decoration: none; }
.row-menu-panel button.danger { color: var(--red); }

/* Desktop: show ⋯ only on row hover; mobile always visible */
@media (hover: hover) and (pointer: fine) {
  table.data .row-menu { opacity: 0; }
  table.data tr:hover .row-menu,
  table.data .row-menu[open] { opacity: 1; }
}

/* ---------- Drawer / collapse create forms ---------- */
details.drawer {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-card);
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}
details.drawer > summary {
  cursor: pointer;
  list-style: none;
  padding: 0.85rem 1.15rem;
  font-weight: 560;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  user-select: none;
}
details.drawer > summary::-webkit-details-marker { display: none; }
details.drawer > summary::before {
  content: "+";
  color: var(--ink-soft);
  font-weight: 400;
  font-size: 1.1rem;
  width: 1.1rem;
}
details.drawer[open] > summary::before { content: "−"; }
details.drawer .drawer-body {
  padding: 0 1.15rem 1.15rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

details.inline-fold { margin-top: 0.65rem; }
details.inline-fold > summary {
  cursor: pointer;
  list-style: none;
  color: var(--blue-muted);
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
details.inline-fold > summary::-webkit-details-marker { display: none; }
details.inline-fold .fold-body {
  margin-top: 0.65rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--line);
}

/* Click-to-edit category */
.cat-row .cat-edit { display: none; }
.cat-row.is-editing .cat-view { display: none; }
.cat-row.is-editing .cat-edit { display: flex; }

/* Hint / tip bubble */
.tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.05rem; height: 1.05rem;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-size: 0.7rem;
  cursor: help;
  margin-left: 0.25rem;
  vertical-align: middle;
  position: relative;
  top: -1px;
}

/* Flash */
.flash {
  padding: 0.65rem 0.95rem;
  border-radius: 8px;
  margin: 1rem 0;
  font-size: 0.9rem;
  background: var(--green-bg);
  color: var(--green);
  border: 1px solid #d5e4db;
}
.flash.err {
  background: var(--red-bg);
  color: var(--red);
  border-color: #e5d4d1;
}

/* Login */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 2rem;
}
.login-card {
  width: 100%; max-width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow);
}
.login-card h1 {
  font-weight: 600; font-size: 1.4rem;
  text-align: center; margin: 0 0 0.3rem;
  letter-spacing: -0.02em;
}
.login-card .sub {
  text-align: center; color: var(--ink-soft);
  font-size: 0.86rem; margin-bottom: 1.4rem;
}

.filters {
  display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: end;
  margin-bottom: 0.85rem;
}
.filters .form-row { margin: 0; min-width: 110px; }

.help-list { padding-left: 1.15rem; }
.help-list li { margin-bottom: 0.5rem; color: var(--ink-soft); }
.help-list strong { color: var(--ink); }

.chart-box { position: relative; height: 280px; margin-top: 0.5rem; }
.chart-box.tall { height: 320px; }

.empty {
  text-align: center; padding: 2rem 1rem;
  color: var(--ink-soft); font-size: 0.92rem;
}

footer.site {
  text-align: center; color: var(--ink-soft);
  font-size: 0.75rem; padding: 1.5rem 0 2rem;
}

.nowrap, table.data td.nowrap, table.data th.nowrap { white-space: nowrap; }

/* Commission (kept, toned down) */
table.data.comm-list > thead > tr > th,
table.data.comm-list > tbody > tr > td {
  vertical-align: middle; padding: 0.4rem 0.45rem;
}
table.data.comm-list td.comm-acct {
  max-width: 11rem; font-size: 0.82rem; line-height: 1.35; word-break: break-all;
}
table.data.comm-list td.comm-act form { margin: 0; display: inline-flex; align-items: center; }
th.sortable { user-select: none; }
th.sortable .sort-ind { color: var(--ink-soft); font-size: 0.72rem; margin-left: 0.15rem; }
th.sortable.sorted { color: var(--ink); }
details.comm-fold { margin-top: 0.85rem; }
details.comm-fold > summary {
  cursor: pointer; font-weight: 500; list-style: none;
  display: flex; align-items: center; gap: 0.35rem;
}
details.comm-fold > summary::-webkit-details-marker { display: none; }
details.comm-fold > summary::before { content: "▸"; color: var(--ink-soft); font-size: 0.85rem; }
details.comm-fold[open] > summary::before { content: "▾"; }

table.data.comm-list tr.filter-row th {
  padding: 0.2rem 0.3rem 0.4rem; border-top: none; font-weight: 400; vertical-align: top;
}
table.data.comm-list select.col-filter,
table.data.comm-list input.col-filter {
  display: block; width: 100%; max-width: 8.5rem; box-sizing: border-box;
  font-size: 0.76rem; padding: 0.18rem 0.3rem;
  border: 1px solid var(--line); border-radius: 4px;
  background: #fff; color: var(--ink); font-weight: 400;
}

.comm-bar {
  display: flex; flex-direction: column; align-items: stretch;
  gap: 0.4rem; margin: 0.15rem 0 0.55rem; padding: 0.55rem 0.8rem;
  background: var(--bg-card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  font-size: 0.88rem; line-height: 1.35;
}
.comm-bar-main {
  display: flex; align-items: baseline; gap: 0.4rem;
  flex-wrap: wrap; white-space: nowrap;
}
.comm-bar-main em { font-style: normal; font-weight: 600; font-size: 1.02rem; }
.comm-bar-main .dot { color: var(--ink-soft); margin: 0 0.05rem; }
.comm-bar-main strong {
  font-weight: 600; font-size: 1.15rem;
  font-variant-numeric: tabular-nums; font-feature-settings: "tnum";
  font-family: var(--font-mono), var(--font);
}
.comm-bar-years { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.comm-chip {
  display: inline-flex; align-items: baseline; gap: 0.15rem;
  padding: 0.25rem 0.5rem; border: 1px solid var(--line);
  border-radius: 6px; background: var(--accent-soft);
  color: var(--ink-soft); font-size: 0.78rem; white-space: nowrap;
}
.comm-chip .expense { color: var(--red); font-weight: 500; }
.comm-hint { margin: 0 0 0.55rem; font-size: 0.78rem; }
.comm-pager {
  display: flex; align-items: center; justify-content: center;
  gap: 0.75rem; margin-top: 0.75rem; padding-top: 0.35rem;
}
.comm-pager[hidden] { display: none !important; }
.comm-pager-info { font-size: 0.84rem; color: var(--ink-soft); min-width: 9rem; text-align: center; }
.comm-pager .btn:disabled { opacity: 0.4; cursor: not-allowed; }

.error-page { text-align: center; padding: 4rem 1rem; }
.error-page .code {
  font-size: 3rem; font-weight: 600; letter-spacing: -0.03em;
  color: var(--ink); margin: 0 0 0.5rem;
  font-variant-numeric: tabular-nums;
}
.error-page p { color: var(--ink-soft); margin: 0 0 1.5rem; }


/* ---------- Pager (transactions) ---------- */
.pager {
  display: flex; align-items: center; justify-content: center;
  gap: 0.75rem; margin-top: 0.75rem; padding-top: 0.35rem;
}
.pager-info { font-size: 0.84rem; color: var(--ink-soft); min-width: 5rem; text-align: center; }
.pager .btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Loan repay: visible button as details summary */
details.repay-fold { margin-top: 0.85rem; }
details.repay-fold > summary.btn-repay {
  list-style: none;
  display: inline-block;
  cursor: pointer;
  user-select: none;
}
details.repay-fold > summary.btn-repay::-webkit-details-marker { display: none; }
details.repay-fold .fold-body {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}
.btn-repay {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  padding: 0.48rem 1rem;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
}
.btn-repay:hover { opacity: 0.9; }

/* ---------- Narrow (~400px) ---------- */
@media (max-width: 640px) {
  .nav-toggle { display: inline-flex; }
  .topbar-inner { flex-wrap: wrap; padding: 0.45rem 0.75rem; gap: 0.45rem; }
  .nav-scroll {
    display: none;
    order: 10;
    flex: 1 1 100%;
    overflow: visible;
  }
  .topbar.is-open .nav-scroll { display: block; }
  .nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
    padding-bottom: 0.35rem;
  }
  .nav a { padding: 0.55rem 0.65rem; }
  .nav-right { gap: 0.35rem; }
  .nav-right > span { display: none; }
  .stat .value { font-size: 1.15rem; }
  .page-title { font-size: 1.3rem; margin-top: 1rem; }
  .wrap { padding: 0 0.75rem 2.5rem; }
  .card { padding: 1rem; }
  .subnav { width: 100%; overflow-x: auto; flex-wrap: nowrap; }
  .note-cell { max-width: 8rem; }
  .chart-box, .chart-box.tall { height: 240px; }
  table.data .row-menu { opacity: 1; }
}