:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface-2: #1f2630;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #3fb950;
  --accent-ink: #04260f;
  --warn: #d29922;
  --danger: #f85149;
  --radius: 8px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --surface: #ffffff;
    --surface-2: #f0f3f6;
    --border: #d0d7de;
    --text: #1f2328;
    --muted: #59636e;
    --accent: #1a7f37;
    --accent-ink: #ffffff;
    --warn: #9a6700;
    --danger: #cf222e;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.5 var(--font); }
a { color: var(--accent); }
h1, h2, h3 { margin: 0 0 12px; line-height: 1.25; }
h1 { font-size: 20px; }
h2 { font-size: 16px; }
h3 { font-size: 14px; }
p { margin: 0 0 8px; }
code, pre, .mono { font-family: var(--mono); font-size: 12px; }
[hidden] { display: none !important; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 8px; top: 8px; z-index: 100; background: var(--surface); padding: 8px; }

/* layout */
.topbar { display: flex; align-items: center; gap: 16px; padding: 8px 16px; background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.nav { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
.nav a { display: block; padding: 4px 12px; border-radius: var(--radius); color: var(--muted); text-decoration: none; }
.nav a[aria-current="page"], .nav a:hover { color: var(--text); background: var(--surface-2); }
.me { margin-left: auto; display: flex; gap: 8px; align-items: center; color: var(--muted); }
main { padding: 16px; max-width: 1600px; margin: 0 auto; }
main:focus { outline: none; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: 8px; }
.spacer { flex: 1; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; min-width: 0; }
.section { margin-bottom: 24px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* stats */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat .value { font-size: 24px; font-weight: 700; }
.bar { height: 8px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); }
.bar.warn > span { background: var(--warn); }
.bar.danger > span { background: var(--danger); }
.spark { width: 100%; height: 48px; display: block; }
.spark path { fill: none; stroke: var(--accent); stroke-width: 2; }

/* controls */
button, .btn {
  font: inherit; color: var(--text); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 4px 12px; cursor: pointer; min-height: 32px;
}
button:hover:not(:disabled) { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.warn { color: var(--warn); border-color: var(--warn); }
button.danger { color: var(--danger); border-color: var(--danger); }
button.link { background: none; border: none; color: var(--accent); padding: 0; min-height: 0; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 4px 8px; min-height: 32px; width: 100%;
}
textarea { min-height: 96px; resize: vertical; }
label { display: flex; flex-direction: column; gap: 4px; font-weight: 600; }
label.inline { flex-direction: row; align-items: center; font-weight: 400; }
label.inline input { width: auto; min-height: 0; }
form.stack { max-width: 640px; }

/* badges */
.badge { display: inline-block; padding: 0 8px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.badge.ok { color: var(--accent); border-color: var(--accent); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.badge.danger { color: var(--danger); border-color: var(--danger); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.dot.ok { background: var(--accent); }
.dot.warn { background: var(--warn); }
.dot.danger { background: var(--danger); }

/* tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }

/* banner */
.banner { display: flex; gap: 12px; align-items: center; padding: 12px 16px; border: 1px solid var(--warn); border-radius: var(--radius); margin-bottom: 16px; background: var(--surface); flex-wrap: wrap; }

/* board */
.board { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(264px, 1fr); gap: 12px; overflow-x: auto; padding-bottom: 8px; align-items: start; }
.column { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); display: flex; flex-direction: column; max-height: calc(100vh - 160px); min-height: 160px; }
.column header { display: flex; justify-content: space-between; align-items: center; padding: 8px 12px; border-bottom: 1px solid var(--border); font-weight: 600; }
.column .cards { list-style: none; margin: 0; padding: 8px; display: flex; flex-direction: column; gap: 8px; overflow-y: auto; flex: 1; }
.column.drop-ok { border-color: var(--accent); }
.column.drop-no { opacity: .5; }
.task {
  display: block; width: 100%; text-align: left; background: var(--surface-2); border: 1px solid var(--border);
  border-left: 4px solid var(--border); border-radius: var(--radius); padding: 8px 12px; cursor: grab;
}
.task.p0 { border-left-color: var(--muted); }
.task.p1 { border-left-color: var(--accent); }
.task.p2 { border-left-color: var(--warn); }
.task.p3 { border-left-color: var(--danger); }
.task .title { font-weight: 600; margin-bottom: 4px; overflow-wrap: anywhere; }
.task .meta { display: flex; gap: 4px; flex-wrap: wrap; font-size: 12px; color: var(--muted); align-items: center; }
.task.dragging { opacity: .4; }
.spinner { width: 12px; height: 12px; border: 2px solid var(--muted); border-top-color: var(--accent); border-radius: 50%; display: inline-block; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }

/* dialog */
dialog { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: var(--radius); padding: 0; width: min(960px, calc(100vw - 32px)); max-height: calc(100vh - 32px); }
dialog::backdrop { background: rgb(0 0 0 / .6); }
dialog .dlg-head { display: flex; align-items: center; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--surface); }
dialog .dlg-body { padding: 16px; display: flex; flex-direction: column; gap: 16px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); }
.tabs button { border: none; border-bottom: 2px solid transparent; border-radius: 0; background: none; }
.tabs button[aria-selected="true"] { border-bottom-color: var(--accent); color: var(--accent); }

/* logs / console / diff */
.log { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px; height: 360px; overflow: auto; margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; font-family: var(--mono); font-size: 12px; }
.log .stderr { color: var(--warn); }
.log .system { color: var(--muted); }
.diff .add { color: var(--accent); }
.diff .del { color: var(--danger); }
.diff .hunk { color: var(--warn); }
.diff .file { font-weight: 700; }

/* toasts */
.toasts { position: fixed; bottom: 16px; right: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 50; max-width: calc(100vw - 32px); }
.toast { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 8px 12px; box-shadow: 0 4px 12px rgb(0 0 0 / .3); }
.toast.error { border-left-color: var(--danger); }

/* auth */
.auth { max-width: 400px; margin: 64px auto; }

@media (max-width: 640px) {
  main { padding: 8px; }
  .topbar { padding: 8px; }
  .me { margin-left: 0; }
}