:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #dde1e7;
  --text: #22262d;          /* Chatiso near-black (wordmark) */
  --muted: #5f6672;
  --accent: #4e066a;        /* Chatiso purple (the "C") */
  --accent-hover: #3d0553;
  --accent-soft: #f2e9f6;
  --ok: #1e7a4c;
  --ok-soft: #e4f4ec;
  --warn: #9a5b00;
  --warn-soft: #fdf1dc;
  --bad: #b3261e;
  --bad-soft: #fbe9e7;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", Consolas, "Liberation Mono", monospace;
  --pt-management: #4e066a;  /* brand purple */
  --pt-core: #0e7c86;
  --pt-post: #c2410c;
  --pt-support: #2f6fd6;
  --k-procedure: #4e066a;
  --k-form: #2e8b57;
  --k-register: #6a8d1f;
  --k-checklist: #8a6d00;
  --k-role: #7a3b9c;
  --k-clause: #b45309;
  --k-department: #55607a;
  --k-step: #2a7f8f;
  --k-missing: #b3261e;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161c;
    --surface: #1a2028;
    --surface-2: #222a34;
    --border: #2f3946;
    --text: #e9e7ee;
    --muted: #a3a0ad;
    --accent: #c08ad8;
    --accent-hover: #d3a6e6;
    --accent-soft: #2e1c38;
    --ok: #5cc98f;
    --ok-soft: #173326;
    --warn: #f0b75a;
    --warn-soft: #3a2c12;
    --bad: #ff8a80;
    --bad-soft: #3d1c1a;
    --shadow: none;
    --pt-management: #c08ad8;
    --pt-core: #3fb8c2;
    --pt-post: #f08a4b;
    --pt-support: #6ea3ff;
    --k-role: #c99be0;
    --k-form: #5cc98f;
    --k-register: #a8cc5c;
    --k-checklist: #e2c25b;
    --k-clause: #f0b75a;
    --k-department: #a3a0ad;
    --k-missing: #ff8a80;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input, select, textarea { font: inherit; color: inherit; }

/* --- top bar --- */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10; flex-wrap: wrap;
}
.brand { font-weight: 650; letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; }
.brand img { height: 30px; width: auto; display: block; border-radius: 4px; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .brand img { background: #fff; padding: 2px 6px; }
}
.login-logo { display: block; width: 180px; height: auto; margin: 6px auto 4px; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  padding: 6px 12px; border-radius: 8px; color: var(--muted); font-weight: 500;
}
.nav a:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
.nav a.active { background: var(--accent-soft); color: var(--accent); }
.spacer { flex: 1; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 999px; font-size: 12.5px; font-weight: 600;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--muted);
  white-space: nowrap;
}
.badge.on { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.off { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.linkbtn {
  background: none; border: 0; color: var(--muted); cursor: pointer; padding: 4px 6px;
}
.linkbtn:hover { color: var(--text); }

/* --- layout --- */
.page { padding: 20px; max-width: 1500px; margin: 0 auto; }
.grid-3 { display: grid; grid-template-columns: 280px minmax(0, 1fr) 380px; gap: 16px; }
.grid-2 { display: grid; grid-template-columns: minmax(0, 1fr) 420px; gap: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card > h2, .card > .card-head {
  margin: 0; padding: 12px 16px; font-size: 14px; font-weight: 650;
  border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px;
}
.card-body { padding: 14px 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: var(--mono); font-size: 12.5px; }
h1 { font-size: 20px; margin: 0 0 4px; letter-spacing: -0.01em; }
h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted);
     margin: 18px 0 8px; font-weight: 650; }
h3:first-child { margin-top: 0; }

.input, select.input, textarea.input {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface);
}
.input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px; border-radius: 8px; border: 1px solid var(--accent);
  background: var(--accent); color: #fff; font-weight: 600; cursor: pointer;
}
.btn:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn:disabled { opacity: 0.55; cursor: default; }
.btn.secondary:hover:not(:disabled) { background: var(--surface-2); border-color: var(--border); }
.btn.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px;
  border-radius: 999px; border: 1px solid var(--border); background: var(--surface);
  cursor: pointer; font-size: 13px; color: var(--text);
}
.chip.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.code {
  font-family: var(--mono); font-size: 12px; padding: 1px 6px; border-radius: 5px;
  background: var(--surface-2); border: 1px solid var(--border); white-space: nowrap;
}
.kind { width: 9px; height: 9px; border-radius: 3px; display: inline-block; flex: none; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { padding: 7px 0; border-bottom: 1px solid var(--border); }
.list li:last-child { border-bottom: 0; }
.clickable { cursor: pointer; }
.clickable:hover { background: var(--surface-2); }
.empty { color: var(--muted); padding: 24px; text-align: center; }
.notice {
  padding: 10px 12px; border-radius: 8px; background: var(--warn-soft); color: var(--warn);
  font-size: 13.5px;
}
.notice.ok { background: var(--ok-soft); color: var(--ok); }
.notice.bad { background: var(--bad-soft); color: var(--bad); }
.steps { counter-reset: none; padding-left: 0; list-style: none; margin: 0; }
.steps li { display: grid; grid-template-columns: 30px 1fr; gap: 8px; padding: 8px 0;
            border-bottom: 1px solid var(--border); }
.steps li:last-child { border-bottom: 0; }
.steps .n { width: 24px; height: 24px; border-radius: 50%; background: var(--accent-soft);
            color: var(--accent); font-weight: 700; font-size: 12px; display: grid;
            place-items: center; }
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 6px 10px; font-size: 14px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
details summary { cursor: pointer; }
.scroll { overflow: auto; }

/* --- chat --- */
.chat-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 440px; gap: 16px;
             height: calc(100vh - 100px); }
.chat-main { display: flex; flex-direction: column; min-height: 0; }
.messages { flex: 1; overflow: auto; padding: 18px; display: flex; flex-direction: column;
            gap: 14px; }
.msg { max-width: 860px; }
.msg.user { align-self: flex-end; background: var(--accent); color: #fff; padding: 10px 14px;
            border-radius: 14px 14px 4px 14px; }
.msg.assistant { align-self: flex-start; background: var(--surface-2); padding: 12px 16px;
                 border-radius: 14px 14px 14px 4px; border: 1px solid var(--border); }
.msg.assistant.selected { outline: 2px solid var(--accent); }
.msg .meta { margin-top: 8px; font-size: 12px; color: var(--muted); display: flex; gap: 8px;
             flex-wrap: wrap; align-items: center; }
.msg p { margin: 0 0 8px; }
.msg p:last-child { margin-bottom: 0; }
.msg ul, .msg ol { margin: 4px 0 8px; padding-left: 20px; }
.cite { font-family: var(--mono); font-size: 11.5px; padding: 0 5px; border-radius: 4px;
        background: var(--accent-soft); color: var(--accent); cursor: pointer; white-space: nowrap; }
.composer { border-top: 1px solid var(--border); padding: 12px; display: flex; gap: 8px; }
.composer textarea { resize: none; min-height: 44px; max-height: 160px; }
.starters { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 8px; margin-top: 12px; }
.starter { text-align: left; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
           background: var(--surface); cursor: pointer; font-size: 14px; }
.starter:hover { border-color: var(--accent); }
.evidence { display: flex; flex-direction: column; min-height: 0; }
.evidence .card-body { overflow: auto; flex: 1; }
.passage { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
           margin-bottom: 10px; background: var(--surface); }
.passage.cited { border-color: var(--accent); }
.passage .head { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 6px;
                 font-size: 13px; }
.passage .text { font-size: 13.5px; white-space: pre-wrap; max-height: 170px; overflow: auto;
                 color: var(--text); }
.fact { font-size: 13.5px; padding: 6px 0; border-bottom: 1px dashed var(--border); }
.fact:last-child { border-bottom: 0; }
.typing { display: inline-flex; gap: 4px; }
.typing span { width: 6px; height: 6px; border-radius: 50%; background: var(--muted);
               animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.25; } 40% { opacity: 1; } }

/* --- graph --- */
.graph-wrap { display: grid; grid-template-columns: 270px minmax(0, 1fr) 400px; gap: 16px;
              height: calc(100vh - 100px); }
.graph-wrap > .card { display: flex; flex-direction: column; min-height: 0; }
.graph-wrap .card-body { overflow: auto; flex: 1; }
#cy { flex: 1; min-height: 420px; }
.legend { display: flex; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--muted);
          padding: 8px 14px; border-top: 1px solid var(--border); }
.legend span { display: inline-flex; align-items: center; gap: 5px; }

/* --- documents --- */
.doc-wrap { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 16px;
            height: calc(100vh - 100px); }
.doc-wrap > .card { display: flex; flex-direction: column; min-height: 0; }
.doc-wrap .card-body { overflow: auto; flex: 1; }
.doc-section { padding: 12px 0; border-bottom: 1px solid var(--border); scroll-margin-top: 70px; }
.doc-section h4 { margin: 0 0 6px; font-size: 15px; }
.doc-section pre { white-space: pre-wrap; font: inherit; margin: 0; font-size: 14px; }
.doc-section.target { background: var(--accent-soft); margin: 0 -16px; padding: 12px 16px; }

/* --- login --- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: 100%; max-width: 380px; }
.login form { display: grid; gap: 12px; }
.login label { font-size: 13px; color: var(--muted); display: grid; gap: 4px; }

@media (max-width: 1100px) {
  .grid-3, .graph-wrap { grid-template-columns: 1fr; height: auto; }
  .chat-wrap, .grid-2, .doc-wrap { grid-template-columns: 1fr; height: auto; }
  .messages { min-height: 50vh; }
  #cy { min-height: 60vh; }
}
@media (max-width: 600px) {
  .page { padding: 12px 16px; }
  .topbar { padding: 8px 16px; gap: 8px; }
  .kv { grid-template-columns: 1fr; }
}

/* --- settings --- */
.settings-page { max-width: 720px; }
.settings-form { display: grid; gap: 10px; }
.settings-form label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.settings-form p { margin: -4px 0 4px; }
.settings-actions { display: flex; gap: 8px; margin-top: 6px; }
a.badge { text-decoration: none; }

/* --- knowledge graph --- */
.graph-page { max-width: 1680px; }
.kg-shell { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 16px;
            height: calc(100vh - 100px); }
.kg-stage { display: flex; flex-direction: column; min-height: 0; overflow: hidden; }
.kg-toolbar { display: flex; align-items: center; gap: 12px; padding: 14px 18px 8px; flex-wrap: wrap; }
.kg-title { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 240px; }
.kg-eyebrow { font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
              color: var(--accent); }
.kg-heading { font-size: 18px; font-weight: 650; letter-spacing: -.01em; }
.kg-back { width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--border);
           background: var(--surface); display: grid; place-items: center; cursor: pointer; color: var(--text); }
.kg-back:hover { border-color: var(--accent); color: var(--accent); }
.kg-controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.kg-search { display: flex; align-items: center; gap: 6px; border: 1px solid var(--border);
             border-radius: 10px; padding: 0 10px; background: var(--surface); color: var(--muted); }
.kg-search input { border: 0; outline: 0; background: transparent; padding: 8px 0; width: 170px; }
select.input.kg-select { width: auto; padding: 7px 10px; border-radius: 10px; }
.kg-toggle { font-size: 13px; color: var(--muted); display: flex; gap: 6px; align-items: center;
             cursor: pointer; }
.kg-chips { display: flex; gap: 6px; flex-wrap: wrap; padding: 0 18px 10px; }
.kg-chip { display: inline-flex; align-items: center; gap: 7px; padding: 5px 12px; border-radius: 999px;
           border: 1px solid var(--border); background: var(--surface); font-size: 12.5px; cursor: pointer; }
.kg-chip:hover { border-color: var(--accent); }
.kg-chip.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); font-weight: 600; }
.kg-chip .kind, .kg-type-row .kind { width: 10px; height: 10px; border-radius: 3px; }
.kg-canvas-wrap { position: relative; flex: 1; min-height: 420px;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background-color: var(--bg);
  background-image: radial-gradient(circle at 1px 1px, var(--border) 1px, transparent 0);
  background-size: 22px 22px; }
.kg-canvas-wrap #cy { position: absolute; inset: 0; }
.kg-tooltip { position: absolute; left: 0; top: 0; z-index: 5; width: 250px; pointer-events: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px;
  box-shadow: 0 8px 24px rgba(16, 24, 40, .14); font-size: 12.5px; }
.kg-tip-code { font-family: var(--mono); font-size: 11.5px; color: var(--accent); font-weight: 700; }
.kg-tip-title { font-weight: 650; margin: 2px 0 6px; }
.kg-tip-row { display: grid; grid-template-columns: 78px 1fr; gap: 6px; color: var(--text); }
.kg-tip-row span { color: var(--muted); }
.kg-hint { position: absolute; left: 14px; top: 12px; font-size: 12px; color: var(--muted);
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px; }
.kg-zoom { position: absolute; right: 14px; bottom: 12px; display: flex; flex-direction: column; gap: 6px; }
.kg-zoom button { width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 18px; cursor: pointer; display: grid; place-items: center; }
.kg-zoom button:hover { border-color: var(--accent); color: var(--accent); }
.kg-legend { display: flex; gap: 16px; flex-wrap: wrap; padding: 10px 18px; font-size: 12px; color: var(--muted); }
.kg-legend span { display: inline-flex; align-items: center; gap: 6px; }
.kg-legend i { width: 14px; height: 10px; border-radius: 3px; border: 1.5px solid; display: inline-block; }
.kg-line { width: 18px; height: 0; border-top: 2px solid var(--accent); display: inline-block; }
.kg-line.dashed { border-top-style: dashed; }
.kg-side { display: flex; flex-direction: column; min-height: 0; }
.kg-side .card-body { overflow: auto; flex: 1; }
.kg-side-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px;
                font-size: 13px; }
.kg-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0 4px; }
.kg-stats div { border: 1px solid var(--border); border-radius: 12px; padding: 10px; background: var(--surface-2); }
.kg-stats b { display: block; font-size: 20px; letter-spacing: -.02em; color: var(--accent); }
.kg-stats span { font-size: 11.5px; color: var(--muted); }
.kg-type-row { display: flex; align-items: center; gap: 8px; padding: 8px 6px !important; border-radius: 8px; }
.kg-flow { list-style: none; padding: 0; margin: 0; position: relative; }
.kg-flow li { display: grid; grid-template-columns: 30px 1fr; gap: 10px; padding: 0 0 14px; position: relative; }
.kg-flow li::before { content: ""; position: absolute; left: 13px; top: 26px; bottom: 0; width: 2px;
                      background: var(--accent-soft); }
.kg-flow li:last-child::before { display: none; }
.kg-flow .n { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: #fff;
              font-weight: 700; font-size: 12px; display: grid; place-items: center; z-index: 1; }
.kg-flow-forms { margin-top: 4px; display: flex; gap: 4px; flex-wrap: wrap; }
@media (max-width: 1100px) {
  .kg-shell { grid-template-columns: 1fr; height: auto; }
  .kg-canvas-wrap { min-height: 65vh; }
}

/* "About this answer" tip next to the answer mode selector: hover, or tap/focus on touch. */
.info-tip { position: relative; display: inline-flex; }
.info-btn { width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--border); background: var(--surface);
  color: var(--muted); font-size: 12px; font-weight: 700; font-style: italic; cursor: help; padding: 0; line-height: 1; }
.info-btn:hover, .info-btn:focus-visible { color: var(--accent); border-color: var(--accent); }
.info-pop { display: none; position: absolute; right: 0; top: calc(100% + 8px); z-index: 20; width: min(320px, 80vw);
  flex-direction: column; gap: 6px; padding: 10px 12px; border-radius: 10px; background: var(--surface);
  border: 1px solid var(--border); box-shadow: 0 8px 24px rgba(0, 0, 0, .12); font-size: 12.5px; font-weight: 400;
  line-height: 1.4; color: var(--text); text-align: left; white-space: normal; }
.info-tip:hover .info-pop, .info-tip:focus-within .info-pop { display: flex; }

/* Data quality panel on the Documents page. */
.dq { padding: 12px 14px; margin: 12px 0; box-shadow: none; }
.dq-head { display: flex; flex-direction: column; gap: 2px; margin-bottom: 8px; }
.dq-item { border-top: 1px solid var(--border); padding: 8px 0; }
.dq-item summary { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 14px; }
.dq-item[data-empty] summary { cursor: default; color: var(--muted); }
.dq-count { min-width: 28px; padding: 1px 8px; border-radius: 999px; text-align: center; font-weight: 700;
  font-size: 13px; background: var(--warn-soft); color: var(--warn); }
.dq-count.zero { background: var(--ok-soft); color: var(--ok); }
.dq-list { margin: 6px 0 2px 38px; }
.dq-list li { padding: 4px 0; }

/* Benchmark card on the knowledge graph page. */
.bench { padding: 12px; box-shadow: none; }
.bench-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.bench-row div { display: flex; flex-direction: column; gap: 2px; }
.bench-row b { font-size: 20px; color: var(--accent); line-height: 1.1; }
.bench-row span { font-size: 12px; color: var(--muted); line-height: 1.3; }

/* On a phone the hover hint would cover the first band title (and there is no hover). */
@media (max-width: 600px) { .kg-hint { display: none; } }