:root {
  --navy: #0a2540;
  --blue: #2f6fd0;
  --bg: #f3f5f9;
  --surface: #ffffff;
  --line: #e3e8ef;
  --ink: #16263a;
  --muted: #6b7c90;
  --red: #c0392b;
  --green: #1f7a4d;
  --radius: 12px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; line-height: 1.3; }
code, .mono { font-family: var(--mono); font-size: .92em; }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: 232px minmax(0, 1fr); min-height: 100vh; }

.sidebar {
  background: var(--navy);
  color: #cfe0f2;
  padding: 22px 16px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; padding: 0 8px; }
.brand:hover { text-decoration: none; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(140deg, #2f6fd0, #418fde);
  display: grid; place-items: center;
  font-weight: 800; color: #fff; letter-spacing: .02em;
}
.brand-txt { display: flex; flex-direction: column; line-height: 1.15; }
.brand-txt b { font-size: 15px; letter-spacing: .12em; }
.brand-txt small { font-size: 11px; color: #8fb0d4; letter-spacing: .08em; }

.sidebar nav { display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 12px; border-radius: 8px; color: #c7d8ea; font-size: 14px;
}
.nav-item:hover { background: rgba(255,255,255,.07); text-decoration: none; color: #fff; }
.nav-item.active { background: rgba(65,143,222,.22); color: #fff; }
.nav-item b { font-size: 12px; font-weight: 600; color: #8fb0d4; }
.nav-item.active b { color: #cfe3f8; }
.nav-item.ghost { border: 1px dashed rgba(255,255,255,.18); margin-top: 2px; }

.side-foot {
  margin-top: auto; display: flex; align-items: center; gap: 8px;
  font-size: 11.5px; color: #7e9bb9; padding: 0 8px;
}
.dot { width: 7px; height: 7px; border-radius: 50%; background: #38b06f; box-shadow: 0 0 0 3px rgba(56,176,111,.18); }

/* ---------- main ---------- */
.main { padding: 26px 34px 60px; min-width: 0; }

.topbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.topbar h1 { font-size: 24px; letter-spacing: -.01em; }
.topbar .sub { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.crumbs { font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.crumbs span { margin: 0 6px; opacity: .5; }
.top-actions { display: flex; gap: 10px; align-items: center; flex: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  padding: 9px 15px; border-radius: 9px; font: inherit; font-size: 13.5px;
  cursor: pointer; transition: .15s ease; white-space: nowrap;
}
.btn:hover { border-color: #c9d6e6; text-decoration: none; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }
.btn.primary:hover { background: #275fb4; }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--red); border-color: #f0c9c4; background: #fff7f6; }
.btn.danger:hover { background: #feeceb; }

/* ---------- filters ---------- */
.filters { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.filters input[type=search] {
  flex: 1; min-width: 240px; padding: 9px 13px; border: 1px solid var(--line);
  border-radius: 9px; font: inherit; background: #fff;
}
.filters select {
  padding: 9px 30px 9px 12px; border: 1px solid var(--line); border-radius: 9px;
  font: inherit; background: #fff;
}
.filters input:focus, .filters select:focus, .field input:focus, .field textarea:focus, .field select:focus {
  outline: 2px solid rgba(47,111,208,.25); outline-offset: 1px; border-color: #9ec0ea;
}

/* ---------- table ---------- */
.tablecard { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
table.docs { width: 100%; border-collapse: collapse; }
table.docs th {
  text-align: left; font-size: 12px; letter-spacing: .04em; color: var(--muted);
  font-weight: 600; padding: 12px 16px; background: #f8fafc; border-bottom: 1px solid var(--line);
}
table.docs td { padding: 14px 16px; border-bottom: 1px solid #eef2f7; vertical-align: top; }
table.docs tr:last-child td { border-bottom: 0; }
table.docs tr:hover td { background: #fbfcfe; }
.t-title a { font-weight: 600; color: var(--ink); font-size: 14.5px; }
.t-title a:hover { color: var(--blue); text-decoration: none; }
.t-sub { color: var(--muted); font-size: 12.5px; margin-top: 3px; max-width: 560px; }
.t-date { color: var(--muted); font-size: 12.5px; white-space: nowrap; }
.sec { font-size: 12.5px; color: #35506d; background: #eef3f9; padding: 3px 9px; border-radius: 6px; white-space: nowrap; }
.badge { display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 999px; font-weight: 600; }
.badge.ok { background: #e7f5ee; color: var(--green); }
.badge.muted { background: #f0f2f5; color: var(--muted); }
.tag { display: inline-block; font-style: normal; font-size: 11.5px; color: #5a7290; background: #f2f5f9; border-radius: 5px; padding: 2px 7px; margin: 0 4px 4px 0; }
.t-actions { text-align: right; white-space: nowrap; }
.icon { font-size: 12.5px; color: var(--muted); margin-left: 10px; background: none; border: 0; cursor: pointer; font-family: inherit; padding: 0; }
.icon:hover { color: var(--blue); text-decoration: none; }
.icon.danger:hover { color: var(--red); }
.empty { text-align: center; color: var(--muted); padding: 46px 0 !important; }

/* ---------- editor ---------- */
.editor { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 22px; align-items: start; }
.col-main, .col-side { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.panel h3 { font-size: 13px; letter-spacing: .04em; color: var(--muted); margin-bottom: 14px; font-weight: 700; }
.panel .hint { color: var(--muted); font-size: 13px; margin: 0 0 14px; }

.field { display: block; margin-bottom: 16px; }
.field > span { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 6px; font-weight: 600; }
.field > span i { color: var(--red); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px;
  font: inherit; background: #fff; color: var(--ink); resize: vertical;
}
.panel .field:last-child { margin-bottom: 0; }

/* block editor */
.blocks { display: flex; flex-direction: column; gap: 10px; }
.block { border: 1px solid var(--line); border-radius: 10px; background: #fff; overflow: hidden; }
.block-head {
  display: flex; align-items: center; gap: 8px; padding: 8px 10px;
  background: #f8fafc; border-bottom: 1px solid #eef2f7;
}
.block-head select { padding: 4px 8px; border: 1px solid var(--line); border-radius: 6px; font-size: 12.5px; background: #fff; }
.block-head .grow { flex: 1; }
.block-head button {
  border: 0; background: none; cursor: pointer; color: var(--muted);
  font-size: 12.5px; padding: 2px 6px; border-radius: 5px; font-family: inherit;
}
.block-head button:hover { background: #eef2f7; color: var(--ink); }
.block-head button.del:hover { background: #fdeceb; color: var(--red); }
.block-body { padding: 12px; }
.block-body textarea, .block-body input {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; font: inherit;
}
.block-body .row { display: flex; gap: 8px; }
.block-body .row > * { flex: 1; }
.block-body .hint { font-size: 11.5px; color: var(--muted); margin: 6px 0 0; }
.add-row { display: flex; gap: 8px; margin-top: 12px; }
.add-row select { padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; font: inherit; background: #fff; }

.meta dl { display: grid; grid-template-columns: 78px 1fr; gap: 8px 10px; margin: 0; font-size: 13px; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; word-break: break-all; }
.danger-zone { border-color: #f3d6d2; }
.result { margin-top: 12px; font-size: 13px; }
.result.ok { color: var(--green); }
.result.err { color: var(--red); }

/* ---------- preview ---------- */
.preview-body { background: #fff; }
.previewbar {
  display: flex; align-items: center; gap: 12px; padding: 12px 24px;
  border-bottom: 1px solid var(--line); background: #f8fafc; position: sticky; top: 0;
}
.previewbar .grow { flex: 1; }
.doc { max-width: 760px; margin: 0 auto; padding: 46px 24px 80px; }
.doc-meta { font-size: 12.5px; color: var(--muted); display: flex; gap: 8px; flex-wrap: wrap; }
.doc h1 { font-size: 32px; line-height: 1.28; margin: 12px 0 14px; letter-spacing: -.015em; }
.doc-summary { font-size: 16.5px; color: #3d5570; margin: 0 0 16px; }
.tags { margin-bottom: 26px; }
.doc-body { font-size: 16px; line-height: 1.85; color: #1c2e42; }
.doc-body h2 { font-size: 21px; margin: 1.9em 0 .6em; }
.doc-body h3 { font-size: 18px; margin: 1.7em 0 .5em; }
.doc-body p { margin: 0 0 1em; }
.doc-body img { max-width: 100%; border-radius: 10px; border: 1px solid var(--line); }
.doc-body figure { margin: 1.6em 0; }
.doc-body figcaption { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.doc-body blockquote { margin: 1.6em 0; padding: 14px 18px; background: #f3f7fc; border-left: 3px solid var(--blue); }
.doc-body .tbl { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.doc-body table { width: 100%; border-collapse: collapse; font-size: 14px; }
.doc-body th, .doc-body td { padding: 9px 12px; border-bottom: 1px solid #eef2f7; text-align: left; }
.doc-body th { background: #f7f9fc; }
.doc-body .chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.2em 0; }
.doc-body .chip { border: 1px solid var(--line); border-radius: 8px; padding: 7px 12px; font-size: 13.5px; }
.doc-foot { margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; font-size: 12.5px; color: var(--muted); word-break: break-all; }

/* toast */
.toast {
  position: fixed; right: 22px; bottom: 22px; background: var(--navy); color: #fff;
  padding: 11px 16px; border-radius: 10px; font-size: 13.5px; box-shadow: 0 12px 30px rgba(10,37,64,.25);
  opacity: 0; transform: translateY(8px); transition: .2s ease; pointer-events: none; z-index: 99;
}
.toast.show { opacity: 1; transform: none; }
.toast.err { background: var(--red); }

@media (max-width: 1080px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; flex-direction: row; align-items: center; flex-wrap: wrap; }
  .sidebar nav { flex-direction: row; }
  .side-foot { display: none; }
  .editor { grid-template-columns: 1fr; }
  .main { padding: 20px; }
}

/* ---------- RAG chat ---------- */
.rag-badge {
  font-size: 12px; color: #35506d; background: #eef3f9; border: 1px solid #dbe6f2;
  padding: 5px 11px; border-radius: 999px; white-space: nowrap;
}
.rag-badge.local { color: #8a5a00; background: #fdf5e6; border-color: #f2e0bd; }

.chat-shell { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 20px; align-items: start; }
.chat-panel {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  display: flex; flex-direction: column; height: calc(100vh - 210px); min-height: 520px; overflow: hidden;
}
.chat-log { flex: 1; overflow-y: auto; padding: 22px 22px 8px; display: flex; flex-direction: column; gap: 18px; }
.msg { display: flex; gap: 10px; align-items: flex-start; }
.msg.user { flex-direction: row-reverse; }
.avatar {
  flex: none; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  font-size: 11.5px; font-weight: 700; color: #fff; background: linear-gradient(140deg, #2f6fd0, #418fde);
}
.msg.user .avatar { background: #dfe8f3; color: #35506d; }
.bubble {
  background: #f6f8fb; border: 1px solid #e8eef6; border-radius: 12px; padding: 12px 15px;
  max-width: 78%; font-size: 14.5px; line-height: 1.75; color: #1c2e42;
}
.msg.user .bubble { background: #2f6fd0; border-color: #2f6fd0; color: #fff; }
.bubble p { margin: 0 0 .55em; }
.bubble p:last-child { margin-bottom: 0; }
.bubble .dim { color: var(--muted); font-size: 13px; }
.msg.user .bubble .dim { color: rgba(255,255,255,.8); }
.bubble sup a { font-size: 10.5px; color: var(--blue); font-weight: 700; text-decoration: none; padding: 0 1px; }
.msg.user .bubble sup a { color: #fff; }
.typing { display: inline-block; width: 7px; height: 15px; background: var(--blue); vertical-align: -2px; animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.suggestions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.suggestions button {
  border: 1px solid #dbe6f2; background: #fff; color: #2c4a6b; font: inherit; font-size: 13px;
  padding: 7px 12px; border-radius: 999px; cursor: pointer; transition: .15s;
}
.suggestions button:hover { border-color: var(--blue); color: var(--blue); background: #f7fbff; }

.chat-input { display: flex; gap: 10px; padding: 14px; border-top: 1px solid var(--line); background: #fbfcfe; }
.chat-input textarea {
  flex: 1; resize: none; border: 1px solid var(--line); border-radius: 10px; padding: 10px 13px;
  font: inherit; max-height: 120px; line-height: 1.6;
}
.chat-input textarea:focus { outline: 2px solid rgba(47,111,208,.22); border-color: #9ec0ea; }

.sources { display: flex; flex-direction: column; gap: 10px; }
.src {
  border: 1px solid var(--line); border-radius: 10px; padding: 11px 12px; background: #fff;
  display: block; color: inherit;
}
.src:hover { text-decoration: none; border-color: #b9cfe8; background: #fbfdff; }
.src-head { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--muted); }
.src-rank {
  width: 20px; height: 20px; border-radius: 6px; background: #eef3f9; color: #35506d;
  display: grid; place-items: center; font-size: 11px; font-weight: 700; flex: none;
}
.src-title { font-size: 13.5px; font-weight: 600; color: var(--ink); margin: 6px 0 4px; line-height: 1.45; }
.src-snippet { font-size: 12.5px; color: var(--muted); line-height: 1.6; margin: 0 0 8px;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.src-bar { height: 4px; background: #eef2f7; border-radius: 999px; overflow: hidden; }
.src-bar i { display: block; height: 100%; background: linear-gradient(90deg, #418fde, #2f6fd0); }
.src-meta { display: flex; justify-content: space-between; font-size: 11.5px; color: #8494a6; margin-top: 5px; }

@media (max-width: 1080px) {
  .chat-shell { grid-template-columns: 1fr; }
  .chat-panel { height: auto; min-height: 460px; }
}