:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --bg-elev: #ffffff;
  --fg: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-fg: #ffffff;
  --danger: #dc2626;
  --good: #16a34a;
  --warn: #d97706;
  --chip-personal: #6366f1;
  --chip-company: #0ea5e9;
  --shadow: 0 1px 3px rgba(15, 23, 42, .07), 0 4px 12px rgba(15, 23, 42, .04);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Sarabun", "Noto Sans Thai",
    Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-elev: #111a2c;
    --fg: #e5e7eb;
    --muted: #94a3b8;
    --border: #1e293b;
    --shadow: 0 1px 3px rgba(0, 0, 0, .4);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); }
body { min-height: 100vh; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--primary); }

.screen { display: block; }
[hidden] { display: none !important; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 18px; letter-spacing: .2px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
.tab {
  border: 0; background: transparent; padding: 8px 12px; border-radius: 8px;
  cursor: pointer; color: var(--muted);
}
.tab.active { background: var(--bg); color: var(--fg); }

/* ---------- panes ---------- */
.pane { display: none; padding: 16px; max-width: 1100px; margin: 0 auto; }
.pane.active { display: block; }

.card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 14px; padding: 16px; box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; }
.span-2 { grid-column: span 2; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } .span-2 { grid-column: span 1; } }

.row { display: flex; align-items: center; }
.row.gap { gap: 8px; }
.row.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }

.muted { color: var(--muted); }
.error { color: var(--danger); margin: 8px 0 0; }

/* ---------- buttons ---------- */
button {
  border: 1px solid var(--border); background: var(--bg-elev);
  padding: 8px 14px; border-radius: 10px; cursor: pointer;
}
button.primary { background: var(--primary); color: var(--primary-fg); border-color: transparent; }
button.danger { background: var(--danger); color: #fff; border-color: transparent; }
button.ghost { background: transparent; }
button.link { background: transparent; border: 0; color: var(--primary); padding: 4px 6px; }
button.small { padding: 4px 10px; font-size: 13px; }

/* ---------- inputs ---------- */
input[type="text"], input[type="number"], input[type="date"], input[type="password"],
select, textarea {
  width: 100%; padding: 9px 10px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--bg); color: var(--fg);
}
textarea { resize: vertical; }
label { display: block; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
label > input, label > select, label > textarea { margin-top: 4px; color: var(--fg); }

/* ---------- login ---------- */
#login { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.login-card { width: 100%; max-width: 360px; }
.login-card h1.brand { margin-bottom: 4px; }
.login-card input { margin: 16px 0 12px; }
.login-card .primary { width: 100%; padding: 10px; }
.login-card .link { display: block; margin: 12px auto 0; }

/* ---------- dashboard kv ---------- */
.kv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.kv {
  background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 12px;
}
.kv .k { font-size: 12px; color: var(--muted); }
.kv .v { font-size: 18px; font-weight: 600; margin-top: 2px; }
.kv .v.income { color: var(--good); }
.kv .v.expense { color: var(--danger); }

/* ---------- task list ---------- */
.task-list, .tx-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.task-list li, .tx-list li {
  display: grid; grid-template-columns: auto 1fr auto auto; gap: 10px; align-items: center;
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg);
}
.task-list.compact li { padding: 8px 10px; }
.task-list .meta, .tx-list .meta { font-size: 12px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.task-list .ttl { font-weight: 500; }
.task-list .done .ttl { text-decoration: line-through; color: var(--muted); }
.chip {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 11px;
  background: rgba(99, 102, 241, .15); color: var(--chip-personal);
}
.chip.company { background: rgba(14, 165, 233, .15); color: var(--chip-company); }
.chip.todo  { background: rgba(100, 116, 139, .15); color: var(--muted); }
.chip.doing { background: rgba(217, 119, 6, .15); color: var(--warn); }
.chip.done  { background: rgba(22, 163, 74, .15); color: var(--good); }
.chip.high  { background: rgba(220, 38, 38, .12); color: var(--danger); }
.chip.medium{ background: rgba(217, 119, 6, .12); color: var(--warn); }
.chip.low   { background: rgba(100, 116, 139, .12); color: var(--muted); }
.chip.income{ background: rgba(22, 163, 74, .15); color: var(--good); }
.chip.expense{background: rgba(220, 38, 38, .15); color: var(--danger); }

.tx-list .amt { font-weight: 600; font-variant-numeric: tabular-nums; }
.tx-list .amt.income { color: var(--good); }
.tx-list .amt.expense { color: var(--danger); }

.thumb {
  width: 36px; height: 36px; border-radius: 6px; object-fit: cover;
  border: 1px solid var(--border); cursor: zoom-in; background: var(--bg-elev);
}

.empty { padding: 24px; text-align: center; color: var(--muted); }

/* ---------- modal ---------- */
.modal {
  border: 0; padding: 0; border-radius: 14px; max-width: 540px; width: 92vw;
  background: var(--bg-elev); color: var(--fg); box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.modal::backdrop { background: rgba(15, 23, 42, .55); }
.modal.slim { max-width: 720px; }
.modal-form { padding: 16px; display: grid; gap: 12px; }
.modal-form .row.gap { gap: 8px; }

.slip-preview { display: flex; align-items: center; gap: 12px; }
.slip-preview img { max-width: 220px; max-height: 160px; border-radius: 8px; border: 1px solid var(--border); }

#slip-view { width: 100%; max-height: 70vh; object-fit: contain; border-radius: 10px; background: #000; }

/* ---------- toast ---------- */
.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--fg); color: var(--bg-elev);
  padding: 10px 14px; border-radius: 10px; box-shadow: var(--shadow);
  z-index: 50;
}
.toast[hidden] { display: none; }