:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --panel-2: #f8fafc;
  --line: #e3e8ef;
  --text: #0f172a;
  --muted: #64748b;
  --brand: #1d4ed8;
  --brand-soft: #e8efff;
  --ok: #15803d;
  --ok-soft: #e7f6ec;
  --warn: #b45309;
  --warn-soft: #fdf3e2;
  --danger: #b91c1c;
  --danger-soft: #fdecec;
  --info: #0e7490;
  --info-soft: #e3f5f8;
  --bc: #7c3aed;
  --bt: #0f766e;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .04);
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1120; --panel: #111a2e; --panel-2: #0f1729; --line: #22304a; --text: #e5ecf6; --muted: #91a1b8;
    --brand: #6d9bff; --brand-soft: #18264a; --ok: #4ade80; --ok-soft: #10291c; --warn: #fbbf24; --warn-soft: #2c2210;
    --danger: #f87171; --danger-soft: #331618; --info: #67d4e8; --info-soft: #0f2a31; --bc: #a78bfa; --bt: #2dd4bf;
    --shadow: none; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1120; --panel: #111a2e; --panel-2: #0f1729; --line: #22304a; --text: #e5ecf6; --muted: #91a1b8;
  --brand: #6d9bff; --brand-soft: #18264a; --ok: #4ade80; --ok-soft: #10291c; --warn: #fbbf24; --warn-soft: #2c2210;
  --danger: #f87171; --danger-soft: #331618; --info: #67d4e8; --info-soft: #0f2a31; --bc: #a78bfa; --bt: #2dd4bf;
  --shadow: none; color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.5 "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--brand); text-decoration: none; }
h1, h2, h3 { margin: 0; line-height: 1.25; }
h1 { font-size: 22px; font-weight: 700; }
h2 { font-size: 16px; font-weight: 600; }
h3 { font-size: 14px; font-weight: 600; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.num { font-variant-numeric: tabular-nums; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }

/* shell */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.shell > div { min-width: 0; }   /* the content column may shrink below a wide table's width (the table scrolls instead) */
.side { background: var(--panel); border-right: 1px solid var(--line); padding: 18px 12px; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; gap: 4px; }
.logo { display: flex; align-items: center; gap: 10px; padding: 4px 10px 16px; font-weight: 700; font-size: 15px; }
.logo img { width: 28px; height: 28px; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; color: var(--text); font-weight: 500; }
.nav a:hover { background: var(--panel-2); }
.nav a.on { background: var(--brand-soft); color: var(--brand); }
.nav .count { margin-left: auto; background: var(--danger); color: #fff; border-radius: 999px; font-size: 11px; padding: 0 7px; line-height: 18px; }
.side .foot { margin-top: auto; padding: 10px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.main { padding: 22px 28px 60px; min-width: 0; }
.head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.head .grow { flex: 1; }
.topbar { display: none; }

/* blocks */
.grid { display: grid; gap: 14px; }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; min-width: 0; }
.card > h2, .card > .card-head { margin-bottom: 12px; }
.card-head { display: flex; align-items: center; gap: 8px; }
.card-head .grow { flex: 1; }
.stat .label { color: var(--muted); font-size: 12px; font-weight: 500; }
.stat .value { font-size: 26px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.stat.danger .value { color: var(--danger); }
.stat.warn .value { color: var(--warn); }
.stat.ok .value { color: var(--ok); }
.section { margin-top: 18px; }

/* table */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; font-weight: 600; color: var(--muted); background: var(--panel-2); white-space: nowrap; position: sticky; top: 0; }
tr:last-child td { border-bottom: none; }
tbody tr.click { cursor: pointer; }
tbody tr.click:hover { background: var(--panel-2); }
td.title { min-width: 220px; font-weight: 500; }

/* badges, buttons, forms */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 500; background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); white-space: nowrap; }
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge.info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.badge.brand { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.badge.bc { color: var(--bc); border-color: currentColor; background: transparent; }
.badge.bt { color: var(--bt); border-color: currentColor; background: transparent; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--muted); }
.dot.ok { background: var(--ok); } .dot.warn { background: var(--warn); } .dot.danger { background: var(--danger); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 7px 12px; font-weight: 500; cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--panel-2); }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.danger { color: var(--danger); }
.btn.ok { color: var(--ok); }
.btn.sm { padding: 3px 9px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field label { font-size: 12px; font-weight: 500; color: var(--muted); }
input[type=text], input[type=password], input[type=number], input[type=date], input[type=search], select, textarea {
  background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; min-width: 0; width: 100%;
}
input:focus, select:focus, textarea:focus, .btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
textarea { resize: vertical; min-height: 70px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.filters > * { width: auto; }
.filters input[type=search] { min-width: 220px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 14px; overflow-x: auto; }
.tabs button { background: none; border: none; padding: 8px 12px; cursor: pointer; color: var(--muted); font-weight: 500; border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs button.on { color: var(--brand); border-color: var(--brand); }

/* alerts */
.alerts { display: flex; flex-direction: column; gap: 8px; }
.alert { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: 10px; background: var(--panel-2); border: 1px solid var(--line); }
.alert.danger { background: var(--danger-soft); border-color: transparent; }
.alert.warn { background: var(--warn-soft); border-color: transparent; }
.alert.info { background: var(--info-soft); border-color: transparent; }
.alert .area { font-weight: 600; min-width: 92px; }
.alert .grow { flex: 1 1 180px; min-width: 0; }

/* matrix / bars */
.matrix td { text-align: center; }
.matrix td:first-child { text-align: left; font-weight: 500; }
.bar { height: 8px; background: var(--panel-2); border-radius: 999px; overflow: hidden; border: 1px solid var(--line); }
.bar > span { display: block; height: 100%; background: var(--brand); }
.bar.warn > span { background: var(--warn); } .bar.danger > span { background: var(--danger); }
svg.spark { display: block; }
.empty { padding: 28px; text-align: center; color: var(--muted); }

/* modal */
.modal-back { position: fixed; inset: 0; background: rgba(15, 23, 42, .45); display: flex; align-items: flex-start; justify-content: center; padding: 6vh 16px; z-index: 50; overflow-y: auto; }
.modal { background: var(--panel); border-radius: 14px; width: 100%; max-width: 640px; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal .mh { display: flex; align-items: center; padding: 16px 18px; border-bottom: 1px solid var(--line); gap: 10px; }
.modal .mh h2 { flex: 1; }
.modal .mb { padding: 16px 18px; display: grid; gap: 12px; }
.modal .mf { padding: 12px 18px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 8px; }
.form2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form2 .full { grid-column: 1 / -1; }
.note { padding: 8px 10px; background: var(--panel-2); border-radius: 8px; border: 1px solid var(--line); }

/* login */
.login { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login .card { width: 100%; max-width: 380px; padding: 28px; }
.login h1 { margin: 14px 0 4px; }
.login form { display: grid; gap: 12px; margin-top: 18px; }
.error { color: var(--danger); font-size: 13px; }

/* today: task lines */
.tlist { display: flex; flex-direction: column; gap: 6px; }
.tl { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel-2); }
.tl.late { border-color: var(--danger); background: var(--danger-soft); }
.tl.today { border-color: var(--warn); }
.tl.done { opacity: .6; }
.tl .grow, .row .grow { flex: 1; min-width: 0; }
.tl-main { cursor: pointer; }
.tl-title { font-weight: 500; overflow-wrap: anywhere; }
.late-text { color: var(--danger); font-weight: 600; }
.ok-text { color: var(--ok); font-weight: 700; }
pre.doc { white-space: pre-wrap; overflow-wrap: anywhere; font: 13px/1.55 ui-monospace, "Cascadia Mono", Consolas, monospace; background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px; margin: 10px 0 0; max-height: 70vh; overflow: auto; }
details > summary { cursor: pointer; }

/* view switch */
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: var(--panel); }
.seg button { background: none; border: none; padding: 6px 12px; cursor: pointer; color: var(--muted); font-weight: 500; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--brand-soft); color: var(--brand); }

/* kanban */
.kanban { display: grid; grid-template-columns: repeat(5, minmax(220px, 1fr)); gap: 10px; overflow-x: auto; padding-bottom: 6px; }
.kcol { background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 8px; display: flex; flex-direction: column; gap: 8px; min-height: 120px; }
.kcol.over { outline: 2px dashed var(--brand); outline-offset: -2px; }
.kcol-head { display: flex; align-items: center; justify-content: space-between; padding: 2px 4px 4px; }
.kcard { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; cursor: grab; display: grid; gap: 6px; box-shadow: var(--shadow); }
.kcard.late { border-left: 3px solid var(--danger); }

/* calendar */
.cal-wrap { overflow-x: auto; }
.cal { display: grid; grid-template-columns: repeat(7, minmax(110px, 1fr)); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--line); gap: 1px; }
.cal .dow { background: var(--panel-2); padding: 6px 8px; font-size: 12px; font-weight: 600; color: var(--muted); }
.cal .cell { background: var(--panel); min-height: 96px; padding: 4px 6px; display: flex; flex-direction: column; gap: 3px; }
.cal .cell.other { background: var(--panel-2); }
.cal .cell.other .cd { color: var(--muted); }
.cal .cell.now .cd { background: var(--brand); color: #fff; border-radius: 999px; width: 22px; text-align: center; }
.cal .cd { font-size: 12px; font-weight: 600; }
.cev { font-size: 12px; padding: 1px 6px; border-radius: 6px; background: var(--brand-soft); color: var(--brand); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer; }
.cev.late { background: var(--danger-soft); color: var(--danger); }
.cev.done { background: var(--ok-soft); color: var(--ok); text-decoration: line-through; }

/* system page */
.proj .badge { white-space: normal; text-align: left; }
.pending { margin-top: 8px; white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text); background: var(--warn-soft); border-radius: 8px; padding: 8px 10px; }

/* quick search */
.search-btn { justify-content: space-between; margin: 0 2px 10px; color: var(--muted); }
kbd { font: 11px ui-monospace, Consolas, monospace; border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; background: var(--panel-2); }
.modal.palette { max-width: 600px; padding: 10px; }
.palette input { font-size: 16px; padding: 10px 12px; }
.pal-list { margin-top: 8px; max-height: 60vh; overflow-y: auto; display: flex; flex-direction: column; gap: 2px; }
.pal-item { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; cursor: pointer; }
.pal-item.on, .pal-item:hover { background: var(--brand-soft); }

#toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 9px 16px; border-radius: 10px; font-weight: 500; opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 60; max-width: calc(100% - 32px); }
#toast.show { opacity: 1; }
#toast.err { background: var(--danger); color: #fff; }

@media (max-width: 1100px) { .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: fixed; z-index: 40; left: 0; top: 0; width: 260px; transform: translateX(-100%); transition: transform .2s; box-shadow: 0 0 40px rgba(0,0,0,.2); }
  .side.open { transform: none; }
  .topbar { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 30; }
  .main { padding: 16px 16px 60px; }
  .g4, .g3, .g2, .form2 { grid-template-columns: 1fr; }
  .g4.keep2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .filters input[type=search] { min-width: 0; flex: 1 1 100%; }
  .stat .value { font-size: 22px; }
  .tl, .alert { flex-wrap: wrap; }
  .alert .area { min-width: 0; }
  .tl .tl-main { flex: 1 1 calc(100% - 60px); }
  .cal { grid-template-columns: repeat(7, minmax(44px, 1fr)); }
  .cal .cell { min-height: 64px; padding: 3px; }
  .cev { font-size: 10px; padding: 0 3px; }
}