:root {
  --bg: #fafaf7;
  --bg-elev: #ffffff;
  --bg-soft: #f1f0eb;
  --border: #e5e3dc;
  --text: #1f1d1a;
  --text-soft: #6b6862;
  --text-muted: #9a9690;
  --accent: #2f6f4f;
  --accent-soft: #d8ebe0;
  --danger: #b5413f;
  --warning: #c98828;
  --shadow: 0 1px 2px rgba(20, 20, 20, .04), 0 4px 16px rgba(20, 20, 20, .04);
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --space: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1916;
    --bg-elev: #232220;
    --bg-soft: #2a2926;
    --border: #36342f;
    --text: #ecebe7;
    --text-soft: #a8a59e;
    --text-muted: #777269;
    --accent: #7fc69e;
    --accent-soft: #2d4a3c;
    --danger: #e26a68;
    --warning: #e3a44e;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.3);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 { margin: 0 0 .4em; font-weight: 600; letter-spacing: -.01em; }
h1 { font-size: 1.8rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.05rem; }

p { margin: 0 0 1em; color: var(--text-soft); }

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px 20px 80px;
}
.container-narrow { max-width: 460px; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  position: sticky; top: 0; z-index: 10;
}
.topbar .brand {
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--text);
}
.topbar .brand small { color: var(--text-muted); font-weight: 400; margin-left: 6px; }
.topbar .right { display: flex; align-items: center; gap: 14px; color: var(--text-soft); font-size: .92rem; }
.topbar .right a { color: var(--text-soft); }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 16px; }

.muted { color: var(--text-muted); }
.soft  { color: var(--text-soft); }
.right { text-align: right; }
.center { text-align: center; }
.row { display: flex; gap: 12px; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.col { display: flex; flex-direction: column; gap: 12px; }
.spacer { flex: 1; }
.hidden { display: none !important; }

label { display: block; font-size: .9rem; color: var(--text-soft); margin-bottom: 6px; }

input[type="text"], input[type="password"], input[type="number"],
input[type="date"], input[type="search"], select, textarea {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input[type="color"] {
  width: 40px; height: 40px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 2px; background: var(--bg); cursor: pointer;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--text);
  color: var(--bg);
  border: 1px solid var(--text);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  font: inherit; font-weight: 500;
  cursor: pointer;
  transition: opacity .15s, transform .05s;
}
.btn:hover { opacity: .9; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: white; }
.btn.ghost   { background: transparent; color: var(--text); border-color: var(--border); }
.btn.ghost:hover { background: var(--bg-soft); opacity: 1; }
.btn.danger  { background: transparent; color: var(--danger); border-color: var(--border); }
.btn.danger:hover { background: var(--bg-soft); }
.btn.sm { padding: 5px 10px; font-size: .85rem; }
.btn.icon { padding: 6px 10px; }

.tag {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 9px; font-size: .8rem;
  border-radius: 999px;
  background: var(--bg-soft); color: var(--text-soft);
}
.tag .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-muted); }

.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td {
  text-align: left; padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
.table th { font-weight: 500; color: var(--text-soft); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.table tbody tr:hover { background: var(--bg-soft); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .actions { text-align: right; white-space: nowrap; }

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}
.kpi {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
}
.kpi .label { font-size: .82rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; }
.kpi .value { font-size: 1.6rem; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 4px; }
.kpi .value.pos { color: var(--accent); }
.kpi .value.neg { color: var(--danger); }

.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.menu-card {
  display: block;
  padding: 28px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  transition: border-color .15s, transform .1s, box-shadow .15s;
  box-shadow: var(--shadow);
}
.menu-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  text-decoration: none;
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.menu-card .icon { font-size: 1.8rem; margin-bottom: 10px; display: block; }
.menu-card .title { font-size: 1.15rem; font-weight: 600; margin-bottom: 4px; }
.menu-card .desc { color: var(--text-soft); font-size: .92rem; }

.flash {
  padding: 10px 14px; border-radius: var(--radius-sm); font-size: .92rem; margin-bottom: 12px;
  background: var(--bg-soft); color: var(--text-soft); border: 1px solid var(--border);
}
.flash.error { background: #fdecec; color: var(--danger); border-color: #f4c9c8; }
@media (prefers-color-scheme: dark) { .flash.error { background: #3b201f; border-color: #5a2c2b; } }

/* Login layout */
.login-shell {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.login-card { width: 100%; max-width: 360px; }
.login-card h1 { text-align: center; }

/* Lists */
.list-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  transition: background .12s;
}
.list-row:hover { background: var(--bg-soft); }
.list-row + .list-row { margin-top: 8px; }
.list-row .text { flex: 1; }
.list-row.done .text { text-decoration: line-through; color: var(--text-muted); }
.checkbox {
  width: 22px; height: 22px; border-radius: 6px;
  border: 1.5px solid var(--border); background: var(--bg-elev);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: background .12s, border-color .12s;
}
.checkbox.checked { background: var(--accent); border-color: var(--accent); }
.checkbox.checked::after {
  content: ""; width: 10px; height: 6px; border-left: 2px solid white;
  border-bottom: 2px solid white; transform: rotate(-45deg) translate(1px, -1px);
}

.empty {
  padding: 32px; text-align: center; color: var(--text-muted);
  border: 1px dashed var(--border); border-radius: var(--radius);
}

/* Forms layout helpers */
.form-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px;
}
.form-grid .full { grid-column: 1 / -1; }

.toggle-group {
  display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden;
}
.toggle-group button {
  background: transparent; border: 0; padding: 7px 14px; cursor: pointer;
  color: var(--text-soft); font: inherit; font-size: .9rem;
}
.toggle-group button.active { background: var(--text); color: var(--bg); }

.charts-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
@media (max-width: 720px) { .charts-grid { grid-template-columns: 1fr; } }

.amount.expense { color: var(--danger); }
.amount.income  { color: var(--accent); }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 8px; border-radius: 999px;
  background: var(--bg-soft); font-size: .78rem; color: var(--text-soft);
}
.chip .dot { width: 7px; height: 7px; border-radius: 50%; }

/* Category list row inside modal: responsive grid */
.cat-row {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.cat-row .cat-actions { display: flex; gap: 6px; justify-self: end; flex-wrap: wrap; }
.cat-row input[type="text"] { min-width: 0; }

/* Category add form inside modal */
.cats-add {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 8px;
  align-items: center;
  margin-bottom: 14px;
}

/* Tablet/mobile */
@media (max-width: 600px) {
  .container { padding: 16px 14px 60px; }
  .topbar { padding: 12px 14px; }
  .card { padding: 16px; }
  h1 { font-size: 1.45rem; }
  .toggle-group button { padding: 6px 10px; font-size: .88rem; }

  /* Transactions table → card layout */
  .table.responsive,
  .table.responsive tbody,
  .table.responsive tr,
  .table.responsive td { display: block; }
  .table.responsive thead { display: none; }
  .table.responsive tr {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "cat     amount"
      "desc    desc"
      "date    actions";
    gap: 4px 12px;
    padding: 12px 14px;
    margin-bottom: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elev);
  }
  .table.responsive tr + tr { margin-top: 0; }
  .table.responsive td { padding: 0; border-bottom: none; }
  .table.responsive td:nth-child(1) { grid-area: date;    color: var(--text-muted); font-size: .82rem; }
  .table.responsive td:nth-child(2) { grid-area: cat; }
  .table.responsive td:nth-child(3) { grid-area: desc;    color: var(--text-soft); font-size: .9rem; }
  .table.responsive td:nth-child(3):empty { display: none; }
  .table.responsive td:nth-child(4) { grid-area: amount;  text-align: right; font-size: 1.05rem; font-weight: 500; }
  .table.responsive td:nth-child(5) { grid-area: actions; text-align: right; }
  .table.responsive tbody tr:hover { background: var(--bg-soft); }
}

@media (max-width: 520px) {
  .cat-row {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      "color name"
      "tag   actions";
    row-gap: 8px;
  }
  .cat-row > input[type="color"] { grid-area: color; }
  .cat-row > .cat-name           { grid-area: name; }
  .cat-row > .tag                { grid-area: tag; justify-self: start; align-self: center; }
  .cat-row > .cat-actions        { grid-area: actions; }

  .cats-add {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      "color name"
      "kind  add";
    gap: 8px;
  }
  .cats-add > #cat-color { grid-area: color; }
  .cats-add > #cat-name  { grid-area: name; }
  .cats-add > #cat-kind  { grid-area: kind; }
  .cats-add > button     { grid-area: add; }
}

@media (max-width: 420px) {
  .topbar #who { display: none; }
  .topbar .right { gap: 10px; font-size: .88rem; }
}