:root {
  color-scheme: light dark;
  --nav: #1e2a44; --nav-2: #2a3858; --nav-ink: #b9c4dc;
  --bg: #eef1f6; --card: #fff; --ink: #1d2433; --muted: #5d6780; --faint: #8a92a6;
  --line: #e3e7ef; --line2: #d4d9e4; --soft: #f0f2f6; --hover: #f7f9fc;
  --accent: #2c4bd1; --accent-hover: #2541b8; --accent-soft: #dfe7ff; --on-accent: #fff;
  --ok: #14622f; --ok-bg: #d9f2e1; --ok-dot: #5cc27f;
  --warn: #8a5a00; --warn-bg: #fdecc8; --warn-dot: #f2b544;
  --purple: #5b3fb0; --purple-bg: #ece6fb;
  --rec-dot: #7c93f0; --design-dot: #9b84e0; --na-dot: #c5ccd9; --unknown-dot: #d4d9e4;
  --danger: #b42318; --danger-bg: #fde8e6;
  --bubble: #1e2a44; --on-bubble: #fff;
  --shadow: 0 1px 3px rgba(20, 30, 60, .08), 0 6px 18px -10px rgba(20, 30, 60, .15);
  accent-color: var(--accent);
}
@media (prefers-color-scheme: dark) {
  :root {
    --nav: #121a2c; --nav-2: #222d47; --nav-ink: #a9b4cc;
    --bg: #0d1220; --card: #161d2e; --ink: #e4e8f1; --muted: #a3acc2; --faint: #7d879e;
    --line: #253049; --line2: #34405c; --soft: #1e2840; --hover: #1b2438;
    --accent: #7d95ff; --accent-hover: #95a8ff; --accent-soft: #263262; --on-accent: #0b1430;
    --ok: #74d996; --ok-bg: #173523; --ok-dot: #4cbf76;
    --warn: #f0c35f; --warn-bg: #3a2c10; --warn-dot: #dca43a;
    --purple: #bba8ff; --purple-bg: #2b2452;
    --rec-dot: #6d84e6; --design-dot: #8c74d6; --na-dot: #4a5672; --unknown-dot: #36415c;
    --danger: #ff9389; --danger-bg: #401c1c;
    --bubble: #2d3f73; --on-bubble: #eef1ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 6px 18px -10px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { font: 14px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang TC", "Noto Sans TC", "Segoe UI", system-ui, sans-serif; color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 20px; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 16px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 0; }
.muted { color: var(--muted); }
.sp { flex: 1; }
.nowrap { white-space: nowrap; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
code { font: 12.5px ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--soft); padding: 1px 6px; border-radius: 5px; overflow-wrap: anywhere; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.msg { margin: 8px 0 0; color: var(--muted); }
.msg.error, .error { color: var(--danger); }
.msg:empty { display: none; }

/* controls */
.btn { display: inline-flex; align-items: center; gap: 6px; font: inherit; font-weight: 600; cursor: pointer; border: 1px solid var(--line2); background: var(--card); color: var(--ink); border-radius: 9px; padding: 7px 14px; white-space: nowrap; text-decoration: none; }
.btn:hover:not(:disabled) { background: var(--soft); text-decoration: none; }
.btn:disabled, .is-disabled { opacity: .5; cursor: not-allowed; }
.is-disabled { pointer-events: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); box-shadow: 0 2px 6px rgba(44, 75, 209, .28); }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); }
.btn-danger { color: var(--danger); }
.btn-danger-solid { background: var(--danger); border-color: var(--danger); color: var(--card); }
.btn-danger-solid:hover:not(:disabled) { background: var(--danger); filter: brightness(1.08); }
.btn.sm { padding: 3px 10px; font-size: 12.5px; border-radius: 7px; }
.btn.wide { width: 100%; justify-content: center; }
input, select, textarea { font: inherit; color: var(--ink); width: 100%; padding: 8px 11px; border: 1.5px solid var(--line2); border-radius: 9px; background: var(--card); }
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.f { display: block; font-size: 13px; font-weight: 600; color: var(--muted); margin: 0 0 14px; }
.f input, .f select, .f textarea { margin-top: 5px; font-weight: 400; }
.opt { font-weight: 400; color: var(--faint); }

/* pills */
.pill { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 999px; white-space: nowrap; background: var(--soft); color: var(--muted); }
.pill.sm { font-size: 11px; padding: 1px 8px; }
.p-disc, .p-blue { background: var(--accent-soft); color: var(--accent); }
.p-ok { background: var(--ok-bg); color: var(--ok); }
.p-warn { background: var(--warn-bg); color: var(--warn); }
.p-purple { background: var(--purple-bg); color: var(--purple); }
.p-danger { background: var(--danger-bg); color: var(--danger); }

/* top bar */
.top { position: sticky; top: 0; z-index: 5; height: 48px; background: var(--nav); color: #fff; display: flex; align-items: center; gap: 22px; padding: 0 28px; }
.brand { color: #fff; font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.logo { width: 20px; height: 20px; border-radius: 6px; background: #4f6ef2; box-shadow: inset -6px -6px 0 #2c4bd1; display: inline-block; }
.top nav { display: flex; gap: 4px; }
.top nav a { color: var(--nav-ink); padding: 6px 10px; border-radius: 7px; font-weight: 500; }
.top nav a:hover, .top nav a.on { color: #fff; text-decoration: none; background: var(--nav-2); }
.menu { position: relative; }
.menu summary { list-style: none; cursor: pointer; color: #fff; display: flex; align-items: center; gap: 8px; padding: 5px 8px; border-radius: 7px; white-space: nowrap; }
.menu summary::-webkit-details-marker { display: none; }
.menu summary:hover { background: var(--nav-2); }
.menu summary::after { content: "▾"; color: var(--nav-ink); font-size: 11px; }
.role { font-size: 11px; background: var(--nav-2); color: var(--nav-ink); border-radius: 999px; padding: 0 7px; }
.menu-pop { position: absolute; right: 0; top: 40px; width: 240px; padding: 6px; color: var(--ink); }
.menu-who { font-size: 12px; color: var(--muted); padding: 6px 10px 8px; border-bottom: 1px solid var(--line); margin-bottom: 4px; overflow-wrap: anywhere; }
.menu-item { display: block; width: 100%; text-align: left; border: 0; background: none; font: inherit; padding: 7px 10px; border-radius: 7px; cursor: pointer; color: var(--ink); }
.menu-item:hover { background: var(--soft); }

/* layout */
.card { background: var(--card); border-radius: 12px; box-shadow: var(--shadow); }
.pad { padding: 18px 20px; }
.page { max-width: 1240px; margin: 0 auto; padding: 22px 28px 40px; }
.page.narrow { max-width: 920px; }
.ph { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.cust { color: var(--muted); }
.back { display: inline-block; font-size: 13px; margin-bottom: 8px; color: var(--muted); }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 16px; }
.stat { padding: 14px 18px; }
.stat-v { font-size: 26px; font-weight: 700; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.stat-v.warn { color: var(--warn); }
.stat-v.ok { color: var(--ok); }
.stat-v.blue { color: var(--accent); }
.stat-l { color: var(--muted); font-size: 13px; }
.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.toolbar input[type=search] { max-width: 320px; }
.seg { display: inline-flex; background: var(--soft); border-radius: 9px; padding: 3px; }
.seg button { border: 0; background: none; font: inherit; font-weight: 600; color: var(--muted); padding: 4px 12px; border-radius: 7px; cursor: pointer; }
.seg button.on { background: var(--card); color: var(--ink); box-shadow: 0 1px 2px rgba(20, 30, 60, .12); }
.table-wrap { overflow-x: auto; position: relative; } /* contains .sr labels, which would widen the page */
.tbl { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.tbl th { text-align: left; font-size: 12px; font-weight: 600; color: var(--faint); padding: 10px 16px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.tbl td { padding: 12px 16px; border-bottom: 1px solid var(--soft); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tr.link { cursor: pointer; }
.tbl tr.link:hover { background: var(--hover); }
.name a { font-weight: 600; color: var(--ink); }
.name small { display: block; color: var(--muted); font-size: 12.5px; }
tr.dim td { color: var(--faint); }
.actions { white-space: nowrap; text-align: right; }
.actions .btn { margin-left: 6px; }
.bar { display: inline-flex; gap: 2px; width: 120px; height: 8px; border-radius: 4px; overflow: hidden; vertical-align: middle; margin-right: 8px; }
.bar i { flex: 1; }
.s-confirmed { background: var(--ok-dot); }
.s-partial { background: var(--warn-dot); }
.s-recommended { background: var(--rec-dot); }
.s-design { background: var(--design-dot); }
.s-na { background: var(--na-dot); }
.s-unknown { background: var(--unknown-dot); }
.avatar { display: inline-grid; place-items: center; width: 26px; height: 26px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 11px; font-weight: 700; margin-right: 8px; vertical-align: middle; }
.empty { color: var(--faint); text-align: center; margin: auto; padding: 24px; }

/* workspace */
.ws { height: calc(100vh - 48px); display: flex; flex-direction: column; gap: 12px; padding: 14px 28px 20px; }
.ws .ph, .ws .back { margin: 0; }
.ctx { margin: -4px 0 0; color: var(--muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cov { padding: 14px 16px; }
.cov-h { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin-left: auto; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.cov-row { display: grid; grid-template-columns: 76px minmax(0, 1fr); gap: 10px; align-items: center; }
.cov-extra { margin-top: 8px; }
.cov-l { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.cov-l b { color: var(--ink); font-size: 13px; }
.cov-l .n { font-size: 18px; font-weight: 700; color: var(--ink); }
.cov-tog { display: flex; align-items: center; gap: 6px; width: 100%; margin-top: 8px; padding: 8px 0 0; border: 0; border-top: 1px dashed var(--line); background: none; font: inherit; font-size: 13px; font-weight: 600; color: var(--ink); cursor: pointer; text-align: left; }
.cov-tog span { font-weight: 400; color: var(--muted); }
.cov-tog:hover { color: var(--accent); }
.grid { display: grid; grid-template-columns: repeat(13, minmax(0, 1fr)); gap: 6px; }
.grid.core { grid-template-columns: repeat(12, minmax(0, 1fr)); }
.t { position: relative; border: 0; font: inherit; text-align: left; cursor: pointer; border-radius: 7px; padding: 6px 7px; font-size: 11.5px; line-height: 1.25; height: 54px; display: flex; align-items: flex-end; background: var(--soft); color: var(--faint); }
.t:hover { box-shadow: inset 0 0 0 1px var(--line2); }
.t.on { outline: 2px solid var(--accent); outline-offset: 1px; }
.t-confirmed { background: var(--ok-bg); color: var(--ok); font-weight: 600; }
.t-partial { background: var(--warn-bg); color: var(--warn); font-weight: 600; }
.t-recommended { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.t-design { background: var(--purple-bg); color: var(--purple); font-weight: 600; }
.t-na { background: repeating-linear-gradient(135deg, var(--soft) 0 6px, var(--line) 6px 7px); color: var(--faint); }
.t b { position: absolute; top: 4px; right: 6px; font-size: 10.5px; background: var(--card); border-radius: 999px; padding: 0 5px; line-height: 16px; }
.cols { flex: 1; display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 14px; min-height: 0; }
.chat { display: flex; flex-direction: column; padding: 16px 18px; min-height: 0; }
.msgs { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; padding-right: 4px; }
.m { max-width: 82%; }
.m .who { font-size: 11px; color: var(--faint); margin-bottom: 2px; }
.m .b { padding: 8px 13px; border-radius: 12px; overflow-wrap: anywhere; }
.m.c { align-self: flex-end; }
.m.c .who { text-align: right; }
.m.c .b { background: var(--bubble); color: var(--on-bubble); border-bottom-right-radius: 4px; white-space: pre-wrap; }
.m.a .b { background: var(--soft); border-bottom-left-radius: 4px; }
.b.pending:empty::after { content: "Thinking…"; color: var(--faint); }
.comp { display: flex; gap: 10px; margin-top: 12px; border: 1.5px solid var(--line2); border-radius: 10px; padding: 8px 8px 8px 12px; align-items: flex-end; }
.comp:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.comp textarea { border: 0; padding: 5px 0; resize: none; box-shadow: none !important; min-height: 30px; max-height: 200px; background: none; }
.hint { font-size: 12px; color: var(--faint); margin: 6px 0 0; }
.locked { margin: 12px 0 0; padding: 10px 14px; border-radius: 10px; background: var(--ok-bg); color: var(--ok); font-weight: 500; }
.reqs { display: flex; flex-direction: column; padding: 4px 16px 12px; min-height: 0; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); overflow-x: auto; }
.tab { border: 0; background: none; font: inherit; padding: 10px 10px 8px; font-size: 13px; color: var(--muted); border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap; }
.tab:hover { color: var(--ink); text-decoration: none; }
.tab.on { color: var(--accent); border-color: var(--accent); font-weight: 700; }
.tab i { font-style: normal; background: var(--soft); border-radius: 999px; padding: 0 6px; margin-left: 5px; font-size: 11px; color: var(--muted); }
.note { margin: 8px 0 0; font-size: 12.5px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.note:has(#panel-note:empty):has(#panel-retry[hidden]) { display: none; }
.filter { font-size: 12.5px; color: var(--muted); padding: 8px 0 0; display: flex; align-items: center; gap: 8px; }
.filter:empty { display: none; }
.x { border: 0; background: var(--soft); color: var(--ink); border-radius: 999px; font: inherit; font-size: 12px; padding: 1px 8px; cursor: pointer; }
.reqlist { overflow-y: auto; flex: 1; }
.row { padding: 10px 0; border-bottom: 1px solid var(--soft); }
.row-h { display: flex; align-items: center; gap: 8px; margin-bottom: 2px; }
.row-t { overflow-wrap: anywhere; }
.rid { font-size: 11.5px; color: var(--faint); font-variant-numeric: tabular-nums; }
.atag { border: 0; font: inherit; font-size: 11.5px; background: var(--soft); border-radius: 5px; padding: 0 7px; color: var(--muted); cursor: pointer; }
.atag:hover { color: var(--accent); }
.ready { font-size: 13px; font-weight: 600; color: var(--ok); }

/* markdown (agent replies and documents) */
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p, .md ul, .md ol { margin: .5em 0; }
.md h1, .md h2, .md h3, .md h4 { font-size: 1rem; margin: .9em 0 .4em; }
.md table { border-collapse: collapse; margin: .5em 0; font-size: 13px; }
.md th, .md td { border: 1px solid var(--line); padding: 5px 8px; text-align: left; vertical-align: top; }
.md pre { overflow-x: auto; background: var(--soft); padding: 8px 10px; border-radius: 7px; }
.md blockquote { margin: .5em 0; padding-left: 12px; border-left: 3px solid var(--line2); color: var(--muted); }

/* review */
.callout { padding: 12px 16px; border-radius: 10px; margin: 0 0 16px; }
.callout.warn { background: var(--warn-bg); color: var(--warn); }
.callout.ok { background: var(--ok-bg); color: var(--ok); }
.callout.blue { background: var(--accent-soft); color: var(--accent); }
.sticky-actions { position: sticky; bottom: 16px; display: flex; align-items: center; gap: 10px; padding: 12px 16px; margin-top: 16px; flex-wrap: wrap; }

/* deliverables */
.docs { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 14px; align-items: start; }
.files { padding: 8px; }
.file { display: flex; gap: 10px; align-items: center; width: 100%; text-align: left; border: 0; background: none; font: inherit; padding: 10px; border-radius: 9px; cursor: pointer; color: var(--ink); }
.file:hover { background: var(--soft); }
.file.on { background: var(--accent-soft); }
.file b { display: block; font-size: 13px; }
.file small { color: var(--faint); }
.ext { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 8px; font-size: 10.5px; font-weight: 800; flex: none; }
.ext-md { background: var(--accent-soft); color: var(--accent); }
.ext-json { background: var(--warn-bg); color: var(--warn); }
.ext-docx { background: var(--ok-bg); color: var(--ok); }
.side { display: flex; flex-direction: column; gap: 14px; }
.proposal { padding: 14px 16px; }
.proposal-h { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.proposal-h b { display: block; font-size: 13px; }
.proposal-h small { color: var(--faint); }
.doc-h { display: flex; align-items: center; gap: 10px; padding: 12px 18px; border-bottom: 1px solid var(--line); font-size: 13px; overflow-wrap: anywhere; }
.doc-body { padding: 22px 28px; overflow-wrap: anywhere; }
.docs .doc-body { max-height: calc(100vh - 230px); overflow: auto; }
.doc-body.md h1 { font-size: 20px; }
.doc-body.md h2 { font-size: 16px; margin-top: 1.4em; }
.doc-body pre { margin: 0; font: 12.5px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; white-space: pre-wrap; }
.ver { width: auto; max-width: 100%; }

/* admin */
.tabs.big { margin-bottom: 16px; }
.tabs.big .tab { font-size: 14px; padding: 10px 14px; }
.switch { appearance: none; -webkit-appearance: none; width: 34px; height: 20px; border-radius: 999px; background: var(--line2); position: relative; cursor: pointer; padding: 0; border: 0; margin: 0; vertical-align: middle; transition: background .15s; }
.switch::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgba(0, 0, 0, .2); transition: left .15s; }
.switch:checked { background: var(--ok-dot); }
.switch:checked::after { left: 16px; }
.switch:disabled { opacity: .55; cursor: not-allowed; }
.test-res { font-size: 12px; display: block; margin-top: 4px; white-space: normal; text-align: left; }
.test-res.ok { color: var(--ok); }
.test-res.err { color: var(--danger); }
.assign-row { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 24px; align-items: center; padding: 16px 0; border-bottom: 1px solid var(--soft); }
.assign-row:first-child { padding-top: 0; }
.assign-row label { display: flex; flex-direction: column; font-size: 13px; }
.assign-row label b { font-size: 14px; }
.right { display: flex; justify-content: flex-end; padding-top: 14px; }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; background: var(--nav); padding: 16px; }
.login-box { width: min(380px, 100%); }
.brand-lg { color: #fff; font-size: 22px; font-weight: 700; display: flex; gap: 10px; align-items: center; justify-content: center; margin-bottom: 18px; }
.login-card { padding: 26px 28px; }
.login-card h1 { font-size: 18px; margin-bottom: 18px; }
.login .hint { text-align: center; margin-top: 14px; }

/* dialog + toast */
dialog { border: 0; padding: 0; width: min(480px, calc(100vw - 32px)); color: var(--ink); }
dialog::backdrop { background: rgba(10, 16, 30, .5); }
dialog form { padding: 22px 24px; }
/* The primary button comes first in the markup so Enter submits it; row-reverse shows it last. */
.dlg-actions { display: flex; flex-direction: row-reverse; justify-content: flex-start; gap: 8px; margin-top: 12px; }
.pw { display: block; font-size: 16px; padding: 10px 12px; margin: 8px 0 4px; user-select: all; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); max-width: calc(100vw - 32px); background: var(--nav); color: #fff; padding: 9px 16px; border-radius: 9px; box-shadow: var(--shadow); font-weight: 500; z-index: 20; }
.toast.error { background: var(--danger); color: var(--card); }

@media (max-width: 900px) {
  .top { gap: 8px; padding: 0 12px; }
  .role { display: none; }
  .page, .ws { padding-left: 16px; padding-right: 16px; }
  .ws { height: auto; }
  .grid, .grid.core { grid-template-columns: none; grid-auto-flow: column; grid-template-rows: repeat(2, auto); grid-auto-columns: 104px; overflow-x: auto; padding: 2px 2px 6px; }
  .cov-row { grid-template-columns: minmax(0, 1fr); }
  .cov-l { flex-direction: row; align-items: baseline; gap: 8px; }
  .cols, .docs { grid-template-columns: minmax(0, 1fr); }
  .msgs { max-height: 60vh; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .assign-row { grid-template-columns: minmax(0, 1fr); }
  .legend { margin-left: 0; }
  .docs .doc-body { max-height: none; }
}