/* Sediment 1 — product UI. One face, one color mode, one hairline, one radius: Selawik (the site's typeface,
   SIL OFL, self-hosted — the CSP allows no external assets) over the site's bone / warm near-black / burnt clay.
   No italics anywhere; emphasis is weight. */
@font-face{font-family:"Selawik";font-style:normal;font-weight:400;font-display:swap;src:url(/static/fonts/selawk.woff2) format("woff2")}
@font-face{font-family:"Selawik";font-style:normal;font-weight:600;font-display:swap;src:url(/static/fonts/selawksb.woff2) format("woff2")}
@font-face{font-family:"Selawik";font-style:normal;font-weight:700;font-display:swap;src:url(/static/fonts/selawkb.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:400;font-display:swap;src:url(/static/fonts/IBMPlexMono-Regular.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-style:normal;font-weight:500;font-display:swap;src:url(/static/fonts/IBMPlexMono-Medium.woff2) format("woff2")}
:root{
  /* palette from sedimentlabs.ai: bone paper, warm near-black ink, burnt clay accent */
  --paper:#f5f3ee;--sheet:#fcfaf5;--ink:#1f1b16;--ink-2:#38322a;--muted:#5c554c;--faint:#948b7b;
  --hair:#c9c3b6;--hair-2:#e4e0d6;--accent:#8a5136;--accent-ink:#6e4429;--accent-soft:#f0e6dc;
  --warn:#8f2a1f;--warn-bg:#f7e9e6;--mark:#e6d9c8;--shadow:0 12px 36px rgba(31,27,22,.12);
  --r:6px;--r2:10px;
  --serif:"Selawik","Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;
  --sans:"Selawik","Segoe UI",-apple-system,BlinkMacSystemFont,Roboto,Helvetica,Arial,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
em,i,cite,dfn,address{font-style:normal;font-weight:600}
*{box-sizing:border-box}html,body{height:100%;margin:0}
body{font:14.5px/1.55 var(--sans);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button{font:inherit;cursor:pointer;color:inherit}input,textarea,select{font:inherit;color:inherit}a{color:var(--accent);text-decoration-thickness:1px;text-underline-offset:2px}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px}
::selection{background:#e6d9c8}
.muted{color:var(--muted)}.small{font-size:12.5px}.warn{color:var(--warn)}.nowrap{white-space:nowrap}.num{text-align:right;font-variant-numeric:tabular-nums}
.lbl,.label{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint)}
.brand .mark{width:17px;height:17px;align-self:center;flex:none}
/* ---------- primitives: one hairline, one radius ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--hair);background:var(--sheet);border-radius:var(--r);padding:7px 13px;font-size:13px;font-weight:500;line-height:1.2;color:var(--ink);transition:border-color .15s ease,background .15s ease}
.btn:active{transform:translateY(.5px)}
.btn:hover{border-color:var(--ink)}.btn.primary{background:var(--ink);color:var(--paper);border-color:var(--ink)}.btn.primary:hover{background:#000}
.btn.danger{color:var(--warn);border-color:#e0c4bf}.btn.danger:hover{border-color:var(--warn);background:var(--warn-bg)}.btn.wide{width:100%;justify-content:center;padding:10px}
.btn:disabled{opacity:.45;cursor:default}
.lnk{border:0;background:none;padding:0;color:var(--muted);font-size:12.5px;text-decoration:none}.lnk:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}.lnk:disabled{opacity:.4;text-decoration:none;cursor:default}.lnk.danger{color:var(--warn)}
.field{display:block;margin:0 0 12px}.field>span{display:block;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:9px 11px;border:1px solid var(--hair);border-radius:var(--r);background:var(--sheet)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--ink);outline:none}
.field .hint{font-size:12px;color:var(--muted);margin-top:5px;line-height:1.45}
.err{color:var(--warn);min-height:20px;font-size:13px;margin:4px 0 8px}
.empty{color:var(--muted);padding:36px 0;font-size:14px;text-align:center;font-family:var(--serif)}
.kv{font:12.5px/1.55 var(--mono);white-space:pre-wrap;background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r);padding:12px;margin:0;font-variant-numeric:tabular-nums}.kv.warn{color:var(--warn)}
#toasts{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:8px;z-index:60}
.toast{background:var(--ink);color:var(--paper);border-radius:10px;padding:10px 16px;box-shadow:var(--shadow);font-size:13px;max-width:380px;animation:fade .22s cubic-bezier(.2,.7,.3,1)}.toast.err{background:var(--warn)}@keyframes fade{from{opacity:0;transform:translateY(6px)}}
.modal-bg{position:fixed;inset:0;background:rgba(22,24,28,.38);display:flex;align-items:center;justify-content:center;z-index:50;animation:fade .15s ease-out}
.modal{position:relative;background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r2);box-shadow:var(--shadow);width:min(520px,94vw);max-height:90vh;overflow:auto;padding:24px 26px;animation:pop .18s cubic-bezier(.2,.8,.3,1.1)}.modal.wide{width:min(820px,96vw)}
@keyframes pop{from{opacity:0;transform:scale(.97) translateY(4px)}}
.modal h3{margin:0 0 14px;font:600 18px/1.3 var(--serif)}.modal h4{margin:16px 0 6px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500}.modal .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:18px}.modal p{margin:0 0 10px;font-family:var(--serif);font-size:15px;line-height:1.6}.modal .two{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.modal .quote{background:var(--paper);border-left:2px solid var(--hair);padding:8px 12px;white-space:pre-wrap;font-family:var(--serif)}.modal .answer-body{padding:2px 0}.modal ol.srcs{margin:4px 0 0 18px;padding:0}.modal ol.srcs li{margin:2px 0}
.modal-x{position:absolute;right:12px;top:10px;border:0;background:none;color:var(--muted);font-size:22px;line-height:1;width:32px;height:32px;border-radius:var(--r)}.modal-x:hover{background:var(--hair-2);color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.chip{border:1px solid var(--hair);background:var(--paper);border-radius:var(--r);padding:2px 9px;font-size:12.5px}.chip:hover{border-color:var(--ink)}
.menu{position:fixed;background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r2);box-shadow:var(--shadow);padding:4px;z-index:40;min-width:170px;animation:pop .14s cubic-bezier(.2,.8,.3,1.1)}
.menu button{display:block;width:100%;text-align:left;border:0;background:none;padding:7px 10px;border-radius:var(--r);font-size:13px;transition:background .12s ease}.menu button:hover{background:var(--hair-2)}.menu button.danger{color:var(--warn)}
.note-pop{position:fixed;background:var(--ink);color:var(--paper);border-radius:var(--r);padding:7px 11px;font-size:12.5px;line-height:1.4;max-width:260px;box-shadow:var(--shadow);z-index:55;pointer-events:none}
/* composer autocomplete: resolver names above the box */
.composer .box{position:relative}
.ac{position:absolute;bottom:calc(100% + 6px);left:10px;right:10px;background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r);box-shadow:var(--shadow);padding:4px;z-index:30;max-height:230px;overflow:auto}
.ac-item{display:flex;align-items:baseline;gap:10px;width:100%;text-align:left;border:0;background:none;border-radius:var(--r);padding:7px 10px;font-size:13px}
.ac-item:hover,.ac-item.on{background:var(--hair-2)}
.ac-item .n{font-weight:500;color:var(--ink);white-space:nowrap}
.ac-item .c{color:var(--muted);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
/* quoting an earlier answer */
.quote-btn{position:fixed;z-index:45;border:1px solid var(--hair);background:var(--ink);color:var(--paper);border-radius:var(--r);padding:5px 11px;font-size:12.5px;box-shadow:var(--shadow)}
.quote-chip{display:flex;align-items:flex-start;gap:8px;margin:2px 2px 8px;border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 var(--r) var(--r) 0;padding:7px 8px 7px 10px}
.quote-chip .qt{flex:1;font:400 13px/1.5 var(--serif);color:var(--ink-2);white-space:pre-wrap;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.quote-chip .qx{border:0;background:none;color:var(--muted);font-size:16px;line-height:1;padding:0 2px}.quote-chip .qx:hover{color:var(--ink)}
.msg.user .bubble .quoted{border-left:3px solid var(--hair);color:var(--muted);font:400 14px/1.5 var(--serif);padding:2px 0 2px 10px;margin:0 0 8px;white-space:pre-wrap}
/* ---------- the product tour: spotlight, character, card ---------- */
.icon-btn{border:0;background:none;width:32px;height:32px;border-radius:var(--r);display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);padding:0;transition:background .13s ease,color .13s ease}
.icon-btn:hover{background:var(--hair-2);color:var(--ink)}
.help-btn{font:600 15px/1 var(--serif);border:1px solid var(--hair);width:28px;height:28px;border-radius:50%}
.help-btn:hover{border-color:var(--accent);color:var(--accent)}
.app.tut-cine{transform:scale(1.10);filter:blur(14px);opacity:.92}
.app.tut-cine-run{transform:scale(1);filter:blur(0);opacity:1;transition:transform 3s cubic-bezier(.16,.6,.2,1),filter 3s cubic-bezier(.3,.5,.3,1),opacity 3s ease-out}
#tutorial-layer{position:fixed;inset:0;z-index:70}
#tutorial-layer.out{opacity:0;transition:opacity .6s ease-out}
#tutorial-layer .d-block{position:absolute;inset:0}
/* the spotlight: a heavier veil and an accent ring, so the lit element is unmistakably the subject */
#tutorial-layer .d-hole{position:absolute;border-radius:10px;border:2px solid var(--accent);
  box-shadow:0 0 0 200vmax rgba(233,229,220,.88),0 10px 40px rgba(31,27,22,.22);pointer-events:none;
  transition:left .8s cubic-bezier(.22,1,.36,1),top .8s cubic-bezier(.22,1,.36,1),width .8s cubic-bezier(.22,1,.36,1),height .8s cubic-bezier(.22,1,.36,1),opacity .8s ease}
/* the title page: the mark drifts together, the word settles, the button follows — slow and steady */
#tutorial-layer .t-title{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;background:rgba(238,234,226,.93);backdrop-filter:blur(2px)}
#tutorial-layer .t-title.gone{opacity:0;transition:opacity .7s ease-out}
#tutorial-layer .t-mark{display:flex;align-items:center;justify-content:center}
#tutorial-layer .t-mark img{height:74px;width:auto;filter:drop-shadow(0 4px 14px rgba(31,27,22,.14));transition:transform 2.8s cubic-bezier(.22,1,.36,1),opacity 2.8s ease}
#tutorial-layer .t-mark img.l{transform:translateX(-9vw);opacity:0}
#tutorial-layer .t-mark img.r{transform:translateX(9vw);opacity:0}
#tutorial-layer .t-title.in .t-mark img.l{transform:translateX(-3px);opacity:1}
#tutorial-layer .t-title.in .t-mark img.r{transform:translateX(3px);opacity:1}
#tutorial-layer .t-word{font:600 21px/1 var(--serif);letter-spacing:.42em;text-indent:.42em;color:var(--ink);opacity:0;transform:translateY(10px);transition:opacity 1.6s ease 1.5s,transform 1.6s cubic-bezier(.22,1,.36,1) 1.5s}
#tutorial-layer .t-title.in .t-word{opacity:1;transform:none}
#tutorial-layer .t-go{opacity:0;transform:translateY(8px);transition:opacity 1.2s ease 2.5s,transform 1.2s cubic-bezier(.22,1,.36,1) 2.5s;padding:9px 26px}
#tutorial-layer .t-title.in .t-go{opacity:1;transform:none}
#tutorial-layer .d-card{position:absolute;visibility:hidden;background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r2);box-shadow:var(--shadow);
  padding:16px 18px;transition:left .8s cubic-bezier(.22,1,.36,1),top .8s cubic-bezier(.22,1,.36,1);z-index:2}
#tutorial-layer .d-kicker{font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:5px}
#tutorial-layer .d-card h4{margin:0 0 6px;font:600 17px/1.3 var(--serif);color:var(--ink)}
#tutorial-layer .d-card p{margin:0 0 12px;font:400 13.5px/1.6 var(--sans);color:var(--ink-2)}
#tutorial-layer .d-foot{display:flex;align-items:center;justify-content:space-between}
#tutorial-layer .d-dots{display:flex;gap:5px}
#tutorial-layer .d-dots i{width:6px;height:6px;border-radius:50%;background:var(--hair)}
#tutorial-layer .d-dots i.on{background:var(--accent)}
@media (prefers-reduced-motion:reduce){.app.tut-cine{transform:none;filter:none}#tutorial-layer .t-mark img,#tutorial-layer .t-word,#tutorial-layer .t-go{transition-duration:.01s;transition-delay:0s}}
/* the verify step in "How I got this" expands to the sentence-by-sentence check */
.steps details.verify-detail{margin:2px 0}
.steps details.verify-detail summary{cursor:pointer;list-style:none}
.steps details.verify-detail summary::-webkit-details-marker{display:none}
.steps details.verify-detail .lnk-look{color:var(--accent);font-size:11.5px;text-decoration:underline;text-underline-offset:2px}
.steps details[open].verify-detail .lnk-look{display:none}
.steps .v-row{padding:4px 0 4px 14px;border-left:2px solid var(--hair-2);margin:4px 0 4px 2px;line-height:1.5}
.steps .v-label{display:inline-block;font-size:10px;letter-spacing:.06em;font-weight:600;border-radius:3px;padding:1px 6px;margin-right:7px;background:var(--hair-2);color:var(--ink-2);vertical-align:1px}
.steps .v-label.supported,.steps .v-label.checked{background:#e4ead9;color:#3c4a2a}
.steps .v-label.rewritten{background:var(--accent-soft);color:var(--accent-ink)}
.steps .v-label.dropped{background:var(--warn-bg);color:var(--warn)}
.steps .v-label.general,.steps .v-label.judgment{background:var(--hair-2);color:var(--muted)}
.steps .v-label.record{background:var(--mark);color:var(--ink-2)}
.steps .v-sent{color:var(--ink-2)}
.steps .v-note{color:var(--faint);font-size:12px}
/* the deliberation transcript: earlier steps tuck behind a small disclosure — click to expand, one
   current line at a time otherwise */
.deliberation{margin:0 0 10px;font-family:var(--sans)}
.deliberation summary{cursor:pointer;list-style:none;font-size:12px;color:var(--faint);user-select:none;display:inline-flex;align-items:center;gap:6px;padding:2px 0;transition:color .15s ease}
.deliberation summary::-webkit-details-marker{display:none}
.deliberation summary::before{content:"›";display:inline-block;font-size:13px;line-height:1;transition:transform .18s ease}
.deliberation[open] summary::before{transform:rotate(90deg)}
.deliberation summary:hover{color:var(--muted)}
.deliberation .think{font-size:12.5px;color:var(--faint);line-height:1.5;padding-left:14px;position:relative;animation:fade .25s ease-out;margin-top:4px}
.deliberation .think::before{content:"";position:absolute;left:2px;top:.62em;width:5px;height:5px;border-radius:50%;background:var(--hair)}
/* figure sentences stream in muted gray and settle into full ink once the verifier has read each one
   against the sources — unverified-yet is fine to read, it is just not yet in ink */
.msg.live .body p, .msg.live .body li{transition:color .5s ease}
.msg.live .body p.pending, .msg.live .body li.pending{color:var(--faint)}
.msg.live .body p.pending sup.cite a, .msg.live .body li.pending sup.cite a{opacity:.55}
/* shimmer lines: the standard loading placeholder (suggestions, status) */
.skeleton{display:flex;flex-direction:column;gap:12px;width:100%;max-width:520px;padding:8px 0}
.skeleton i{display:block;height:12px;border-radius:3px;background:linear-gradient(90deg,var(--hair-2) 0%,#faf8f2 45%,var(--hair-2) 90%);background-size:240% 100%;animation:shimmer 1.3s ease-in-out infinite}
.skeleton i:nth-child(1){width:72%}.skeleton i:nth-child(2){width:88%}.skeleton i:nth-child(3){width:56%}
/* travel = exactly one gradient tile (background-size 240%: Δposition 171.4% == 240% of the width), so the loop is seamless */
@keyframes shimmer{0%{background-position:171.4% 0}100%{background-position:0% 0}}
/* ---------- login ---------- */
.login-wrap{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px}
.login{width:360px;max-width:100%}
.login .login-mark{display:block;width:44px;height:44px;margin:0 auto 14px}
.login h1{margin:0;font:600 26px/1.2 var(--serif);letter-spacing:-.01em}.login .sub{color:var(--muted);margin:4px 0 26px;font-size:13px}
.login .fine{font-size:12.5px;color:var(--muted);margin-top:18px;line-height:1.5;font-family:var(--serif)}
/* ---------- shell: top bar + one or two conversation columns (+ document pane) ---------- */
.app.single{display:grid;grid-template-rows:50px minmax(0,1fr);grid-template-columns:minmax(0,1fr);height:100vh;min-height:0}
/* the experimental top rail (round-3 finding 30): recent conversations as tabs under the topbar */
.app.single.with-rail{grid-template-rows:50px 38px minmax(0,1fr)}
.rail{grid-column:1 / -1;display:flex;align-items:center;gap:6px;padding:0 16px;overflow-x:auto;scrollbar-width:none;background:var(--paper)}
.rail::-webkit-scrollbar{display:none}
.rail-tab{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--hair-2);background:var(--sheet);border-radius:var(--r);padding:4px 12px;font-size:12.5px;color:var(--muted);white-space:nowrap;max-width:220px;flex:none}
.rail-tab .t{overflow:hidden;text-overflow:ellipsis}
.rail-tab:hover{border-color:var(--hair);color:var(--ink)}
.rail-tab.on{border-color:var(--ink);color:var(--ink);font-weight:600;background:var(--paper)}
.rail-tab.plus{font-size:15px;padding:2px 10px;font-weight:600}
.rail-tab .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none}
@media (max-width:860px){.app.single.with-rail{grid-template-rows:50px minmax(0,1fr)}.rail{display:none}}
.app.single.with-pane{grid-template-columns:minmax(0,1fr) minmax(400px,44%)}
.app.single.with-history.split{grid-template-columns:264px minmax(0,1fr)}
.app.single.with-history.split.with-pane{grid-template-columns:264px minmax(0,1fr) minmax(400px,44%)}
.app.single.with-history:not(.split) .history{position:fixed;top:50px;left:0;bottom:0;width:264px;z-index:36;box-shadow:var(--shadow)}
.history{border-right:1px solid var(--hair);background:var(--paper);overflow:auto;min-height:0;display:flex;flex-direction:column}
.hist-head{padding:14px 16px 8px}
.hist-list{display:flex;flex-direction:column;padding:0 8px 16px}
.hist-row{display:flex;align-items:stretch;margin:1px 0}
.hist-row .hist-item{flex:1;min-width:0;margin:0}
.hist-del{border:0;background:none;color:var(--faint);padding:0 9px;font-size:16px;line-height:1;border-radius:var(--r);flex:none;align-self:stretch}
.hist-del:hover{color:var(--warn);background:var(--warn-bg)}
.hist-del.arm{color:var(--warn);font:600 11.5px/1 var(--sans);white-space:nowrap}
/* the × shows on hover where hover exists; on touch it is always there (mobile has no hover) */
@media (hover:hover){.hist-del{opacity:0}.hist-row:hover .hist-del,.hist-del:focus-visible,.hist-del.arm{opacity:1}}
.hist-item{display:flex;flex-direction:column;gap:2px;text-align:left;border:0;background:none;border-radius:var(--r);padding:8px 10px;margin:1px 0;transition:background .13s ease}
.hist-item:hover{background:var(--hair-2)}
.hist-item.current{background:var(--accent-soft)}
.hist-item .t{font:500 13.5px/1.35 var(--sans);color:var(--ink);overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.hist-item .d{font-size:11.5px;color:var(--faint)}
.hist-item .t .dot,.hist-btn .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);flex:none}
.hist-item .t .dot{margin-right:6px;vertical-align:1px}
.hist-btn{position:relative}.hist-btn .dot{position:absolute;top:-3px;right:-3px;box-shadow:0 0 0 2px var(--paper)}
.hist-item.unread .t{font-weight:600}
.hist-btn{border:1px solid var(--hair);background:var(--sheet);border-radius:var(--r);padding:5px 12px;font-size:13px;font-weight:500;color:var(--ink);white-space:nowrap}
.hist-btn:hover{border-color:var(--ink)}.hist-btn.on{background:var(--accent-soft);border-color:var(--accent)}
/* On the single-pane desktop the history panel is an overlay: a TRANSPARENT scrim behind it makes any
   center-screen click dismiss it (round-3 finding 28). Split view docks the panel, so no scrim there. */
.app.single:not(.split) .hist-scrim{display:block;position:fixed;top:50px;left:0;right:0;bottom:0;z-index:34;background:transparent}
.hist-scrim{display:none}
.topbar{grid-column:1 / -1;display:flex;align-items:center;gap:14px;padding:0 20px;background:var(--paper)}
.topbar .brand{font:600 18px/1 var(--serif);letter-spacing:-.005em;white-space:nowrap;cursor:pointer;display:flex;align-items:baseline;gap:10px}.topbar .brand small{font:400 12px/1 var(--sans);color:var(--muted);letter-spacing:.01em}
.topbar .grow{flex:1}
.topbar .who{border:0;background:none;padding:6px 8px;border-radius:var(--r);font-size:13px;text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px}.topbar .who:hover{background:var(--hair-2)}.topbar .who small{display:block;color:var(--muted);font-size:11.5px}
.topbar .split-btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--hair);background:var(--sheet);border-radius:var(--r);padding:6px 11px;font-size:12.5px;font-weight:500;color:var(--ink)}.topbar .split-btn:hover{border-color:var(--ink)}.topbar .split-btn .ico{display:inline-flex;color:var(--ink)}
.topbar .pane-tabs{display:none;gap:2px}.topbar .pane-tabs button{border:1px solid var(--hair);background:var(--sheet);padding:4px 10px;font-size:12px;border-radius:var(--r);color:var(--muted)}.topbar .pane-tabs button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.cols{display:grid;grid-template-columns:minmax(0,1fr);min-height:0;min-width:0;position:relative}.app.split .cols{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
/* the brand mark's two halves, floor to ceiling on either side of the conversation — muted background, the
   text always paints above them */
.cols .col{z-index:1}
.app.single:not(.split) .cols::before,.app.single:not(.split) .cols::after{content:"";position:absolute;top:0;bottom:0;width:34vh;z-index:0;opacity:.04;pointer-events:none;background-repeat:no-repeat;background-size:auto 100%}
.app.single:not(.split) .cols::before{left:0;background-image:url(/static/brand-left.svg);background-position:left center}
.app.single:not(.split) .cols::after{right:0;background-image:url(/static/brand-right.svg);background-position:right center}
.app.with-history .cols::before{display:none}                 /* the history panel takes the left mark's place */
.app.with-pane .cols::after{display:none}
@media (max-width:1180px){.app.single .cols::before,.app.single .cols::after{display:none !important}}
.col{display:flex;flex-direction:column;min-width:0;min-height:0;position:relative}.col.side{border-left:1px solid var(--hair)}
/* the strip: the conversation's topic, centered (serif); click it for Memories; "New chat" (or × on a split pane)
   files the conversation; a second row lists the files already in the conversation */
.strip{display:flex;flex-direction:column;background:var(--paper)}
.strip .strip-row{position:relative;display:flex;align-items:center;justify-content:center;padding:8px 96px;min-height:40px}
.strip .topic{display:inline-block;color:var(--ink);font:600 15px/1.35 var(--serif);text-align:center;padding:3px 10px;max-width:100%;white-space:normal;overflow-wrap:anywhere}
.strip .close-x{position:absolute;right:12px;top:50%;transform:translateY(-50%);border:0;background:none;color:var(--muted);font-size:21px;line-height:1;width:30px;height:30px;border-radius:var(--r)}.strip .close-x:hover{background:var(--hair-2);color:var(--ink)}
.strip .files{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:0 24px 8px;justify-content:center}
.strip .files .lbl{margin-right:2px}
@media (max-width:860px){.strip .strip-row{padding:10px 88px 10px 12px}}
.main{display:flex;flex-direction:column;min-width:0;min-height:0;position:relative}
@keyframes pulse{50%{opacity:.25}}@keyframes blink{50%{opacity:0}}
/* ---------- the conversation: a transcript on paper, not bubbles ---------- */
.thread{flex:1;overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;scrollbar-width:thin;scrollbar-color:var(--hair) transparent}
.thread::-webkit-scrollbar{width:10px}.thread::-webkit-scrollbar-track{background:transparent}
.thread::-webkit-scrollbar-thumb{background:var(--hair);border-radius:5px;border:2px solid var(--paper)}.thread::-webkit-scrollbar-thumb:hover{background:var(--faint)}
.thread-inner{max-width:680px;margin:0 auto;padding:30px 24px 18px}
.welcome{padding-top:18vh}
.welcome .hello{margin:0 0 18px;font:600 26px/1.25 var(--serif);letter-spacing:-.012em;color:var(--ink)}
.welcome .examples{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.welcome .example{border:0;background:none;color:var(--ink-2);padding:7px 0;font:400 17px/1.45 var(--serif);text-align:left;white-space:normal;overflow-wrap:anywhere;transition:color .15s ease,transform .15s ease}
.welcome .example:hover{color:var(--accent);transform:translateX(3px)}
.welcome .example.muted{color:var(--faint)}
.msg{margin:0 0 24px}
.msg.rise{animation:rise .3s cubic-bezier(.2,.7,.3,1)}
@keyframes rise{from{opacity:0;transform:translateY(6px)}}
.msg.user{display:block;padding-top:16px;margin-top:4px}.thread-inner>.msg.user:first-child{padding-top:0}
.msg.user .bubble{background:none;color:var(--ink);padding:0;border-radius:0;max-width:none;white-space:pre-wrap;overflow-wrap:anywhere;font:600 15px/1.55 var(--sans);letter-spacing:.002em}
.msg.assistant .body{overflow-wrap:anywhere;font:400 16px/1.68 var(--serif);color:var(--ink)}
.body p{margin:0 0 .85em}.body p:last-child{margin-bottom:0}
.body h1{font-size:21px;margin:.1em 0 .55em;font-weight:600;letter-spacing:-.005em}
.body h2{font-size:16.5px;margin:1.5em 0 .45em;font-weight:600;color:var(--ink)}.body h2:first-child{margin-top:0}
.body h3{font-size:15px;margin:1.1em 0 .35em;font-weight:600}
.body h4{font-size:11px;letter-spacing:.08em;text-transform:uppercase;margin:1.2em 0 .4em;font-weight:500;color:var(--muted);font-family:var(--sans)}
.body ul,.body ol{margin:.3em 0 .9em 1.25em;padding:0}.body li{margin:.25em 0}
.body b,.body strong{font-weight:600}
.body code{font:13px var(--mono);background:var(--hair-2);padding:1px 4px;border-radius:3px}.body pre{font:12.5px/1.5 var(--mono);background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r);padding:10px 12px;overflow:auto;white-space:pre-wrap}
.body table{border-collapse:collapse;font:13.5px var(--sans);margin:.7em 0;width:100%;display:block;overflow:auto;font-variant-numeric:tabular-nums}.body td,.body th{border-bottom:1px solid var(--hair-2);padding:6px 10px;white-space:normal;text-align:left;vertical-align:top}.body th{border-bottom:1px solid var(--hair);font-weight:500;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
/* citations as quiet pills: readable at [1] and at [18], a real hit target, no bracket clutter */
sup.cite{font-size:.62em;line-height:0;margin-left:2px;font-family:var(--sans)}
sup.cite a{display:inline-block;min-width:1.55em;padding:.18em .42em;border-radius:.7em;background:var(--accent-soft);color:var(--accent-ink);text-decoration:none;font-weight:600;text-align:center;line-height:1.25;cursor:pointer;font-variant-numeric:tabular-nums;transition:background .15s ease,color .15s ease}
sup.cite a:hover{background:var(--accent);color:var(--paper);text-decoration:none}
sup.cite+sup.cite{margin-left:3px}
.unv{border-bottom:1.5px solid rgba(143,42,31,.55);background:rgba(143,42,31,.06);border-radius:2px;cursor:help}
.caret{display:inline-block;width:2px;height:1em;background:var(--ink);vertical-align:-2px;margin-left:2px;animation:blink 1s infinite}
/* the working indicator: the status words themselves carry the motion — a soft highlight sweeps
   through the text (the suggestions-skeleton shimmer, masked to the words) */
.status{display:flex;align-items:center;gap:10px;font-size:13px;margin-top:8px;font-family:var(--sans)}
.status .stxt{color:var(--muted);transition:opacity .25s ease}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .status .stxt{background:linear-gradient(90deg,var(--faint) 0%,var(--faint) 38%,var(--ink-2) 50%,var(--faint) 62%,var(--faint) 100%);background-size:220% 100%;-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent;animation:textshine 2s ease-in-out infinite}
}
@keyframes textshine{0%{background-position:130% 0}100%{background-position:-130% 0}}
@media (prefers-reduced-motion:reduce){.status .stxt{animation:none;background:none;-webkit-text-fill-color:currentColor;color:var(--muted)}}
.msg.assistant.live .body+.status{margin-top:10px}
.line{font-size:12.5px;color:var(--muted);margin-top:8px;font-family:var(--sans)}.line.warn{color:var(--warn)}
.msg.assistant.error .body{color:var(--muted);font-family:var(--sans);font-size:14px}
/* the user's own file arriving in the conversation; a chart the analyst drew; a file handed over */
.msg.attach{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin:0 0 18px;font-family:var(--sans)}.msg.attach .ico{display:inline-flex;color:var(--faint)}.msg.attach .lnk{font-size:12.5px}.msg.attach.removed{opacity:.7}
figure.chart{margin:14px 0 6px;padding:0}figure.chart img{display:block;max-width:100%;height:auto;border:1px solid var(--hair-2);border-radius:var(--r);background:var(--sheet)}
figure.chart figcaption{display:flex;gap:14px;align-items:baseline;font-size:12px;color:var(--muted);margin-top:6px;font-family:var(--sans)}figure.chart figcaption a{color:var(--muted);font-size:12px}figure.chart figcaption a:hover{color:var(--ink)}
a.filecard{display:inline-flex;align-items:center;gap:10px;margin-top:12px;border:1px solid var(--hair);background:var(--sheet);border-radius:var(--r);padding:9px 14px 9px 12px;text-decoration:none;color:var(--ink);font:500 13.5px var(--sans)}a.filecard:hover{border-color:var(--ink)}a.filecard .ico{display:inline-flex;color:var(--muted)}a.filecard .muted{font-weight:400;font-size:12px}
.tools a.export{color:var(--muted);text-decoration:none;font-size:12px;letter-spacing:.01em}.tools a.export:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px}
.msg.assistant.brief{border-left:2px solid #cdb36b;padding-left:14px}.brief-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#8a6d1d;margin-bottom:6px;font-family:var(--sans)}.msg.assistant.brief details.sources a{color:var(--muted)}
details.sources{margin-top:9px;font-size:12.5px;color:var(--muted);font-family:var(--sans)}details.sources summary{cursor:pointer;list-style:none;display:inline-block;user-select:none}details.sources summary::-webkit-details-marker{display:none}details.sources summary:hover{color:var(--ink)}
details.sources[open] summary{color:var(--ink)}details.sources ol{margin:6px 0 0 18px;padding:0}details.sources li{margin:3px 0}details.sources .src{border:0;background:none;color:var(--muted);text-align:left;padding:0;font-size:12.5px}details.sources .src:hover{color:var(--ink);text-decoration:underline}
details.sources .marks{margin-right:6px;display:inline-flex;gap:3px;vertical-align:-1px}
details.sources .mark{border:0;display:inline-block;min-width:1.55em;padding:.14em .42em;border-radius:.7em;background:var(--accent-soft);color:var(--accent-ink);font-weight:600;font-size:10.5px;text-align:center;line-height:1.25;font-family:var(--sans);font-variant-numeric:tabular-nums;transition:background .15s ease,color .15s ease}
details.sources .mark:hover{background:var(--accent);color:var(--paper);text-decoration:none}
.msg.assistant .tools{display:flex;gap:16px;align-items:center;font-size:12px;color:var(--muted);margin-top:9px;opacity:0;transition:opacity .15s;font-family:var(--sans)}.msg.assistant:hover .tools,.msg.assistant:focus-within .tools{opacity:1}
.tools button{border:0;background:none;color:var(--muted);padding:0;font-size:12px;letter-spacing:.01em}.tools button:hover{color:var(--ink)}.tools .t{margin-left:auto;font-variant-numeric:tabular-nums}
@media (hover:none){.msg.assistant .tools{opacity:1}}
.steps{margin-top:8px;font-size:12.5px;color:var(--muted);border-left:1px solid var(--hair);padding:2px 0 2px 12px;font-family:var(--sans)}.steps div{margin:2px 0}.steps b{font-weight:500;color:var(--ink-2)}.steps pre{font:12px/1.5 var(--mono);white-space:pre-wrap;margin:6px 0 0;background:var(--sheet);border-radius:var(--r);padding:6px 8px}
/* the text bar: a sheet with an ink edge, a square send mark — not a pill; a paperclip for the user's own files */
.composer{padding:6px 24px 20px;background:linear-gradient(to bottom,rgba(246,243,236,0),var(--paper) 30%)}
.composer .note{max-width:680px;margin:0 auto 8px;font-size:12.5px;color:var(--muted)}
.composer .box{max-width:680px;margin:0 auto;display:flex;flex-direction:column;gap:6px;border:1px solid var(--hair);border-radius:14px;background:var(--sheet);padding:10px 12px;box-shadow:0 1px 3px rgba(31,27,22,.05);transition:border-color .15s ease,box-shadow .2s ease}
.composer .box:focus-within{border-color:var(--ink);box-shadow:0 3px 14px rgba(31,27,22,.08)}
.composer .row{display:flex;align-items:flex-end;gap:8px}
.composer .clip{width:30px;height:30px;border:0;background:none;border-radius:var(--r);color:var(--muted);display:inline-flex;align-items:center;justify-content:center;flex:none;padding:0;align-self:center}
.composer .clip .ico, .composer .clip span{display:flex;align-items:center;justify-content:center;line-height:0}
.composer .clip:hover{color:var(--ink);background:var(--hair-2)}.composer .clip:disabled{opacity:.35;cursor:default}
.composer .attached{display:flex;flex-wrap:wrap;gap:6px;padding:2px 2px 4px;border-bottom:1px solid var(--hair-2)}
.chip.file{display:inline-flex;align-items:center;gap:0;padding:0;background:var(--paper);border:1px solid var(--hair);border-radius:var(--r);max-width:100%}
.chip.file .name{border:0;background:none;padding:3px 6px 3px 8px;font-size:12.5px;display:inline-flex;align-items:center;gap:6px;color:var(--ink);max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chip.file .name:hover{text-decoration:underline;text-underline-offset:3px}.chip.file .ico{display:inline-flex;color:var(--muted)}
.chip.file .x{border:0;background:none;padding:2px 8px 3px 4px;color:var(--faint);font-size:15px;line-height:1}.chip.file .x:hover{color:var(--warn)}
.col.dropping .composer .box{border-color:var(--ink);border-style:dashed;background:var(--accent-soft)}
.col.dropping .thread{outline:2px dashed var(--hair);outline-offset:-8px}
.composer textarea{flex:1;border:0;outline:0;resize:none;background:transparent;max-height:220px;padding:4px 0;font:400 15.5px/1.5 var(--sans);min-height:26px}.composer textarea::placeholder{color:var(--faint);font-family:var(--serif)}.composer textarea:disabled{color:var(--muted)}
.composer .go{width:36px;height:36px;border-radius:10px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);display:inline-flex;align-items:center;justify-content:center;flex:none;line-height:1;transition:background .15s ease,transform .06s ease}
.composer .go .ico{display:flex;align-items:center;justify-content:center;line-height:0}
.composer .go:hover{background:var(--muted);border-color:var(--muted)}.composer .go:active{transform:scale(.93)}.composer .go:disabled{background:var(--hair-2);border-color:var(--hair-2);color:var(--faint);cursor:default;transform:none}
.composer .go.stop{background:var(--sheet);border:1px solid var(--ink);color:var(--ink)}.composer .go.stop:hover{background:var(--hair-2)}.composer .go.stop .sq{width:11px;height:11px;background:var(--ink);border-radius:2px;display:block}
/* ---------- memories modal ---------- */
.modal.drawer .loaded{border:1px solid var(--hair);border-radius:var(--r);padding:2px 14px;margin-bottom:10px;background:var(--sheet)}.modal.drawer .loaded ul{margin:0 0 0 16px;padding:0}
.mrow{display:grid;grid-template-columns:150px 1fr;gap:12px;padding:9px 0;border-bottom:1px solid var(--hair-2);font-size:13.5px}.mrow:last-child{border-bottom:0}.mrow .k{color:var(--muted);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding-top:3px}.mrow .v{min-width:0;overflow-wrap:anywhere}
.modal.drawer input{width:100%;padding:8px 11px;border:1px solid var(--hair);border-radius:var(--r);margin:4px 0 10px;background:var(--sheet)}.modal.drawer input:focus{outline:none;border-color:var(--ink)}
.eps{max-height:46vh;overflow:auto;display:flex;flex-direction:column;gap:8px}.ep{border:1px solid var(--hair);border-radius:var(--r);padding:10px 12px;background:var(--sheet)}.ep.on{border-color:var(--ink)}.ep .ep-t{font-size:14px}.ep .ep-t b{font-family:var(--serif);font-weight:600}.ep .ep-acts{display:flex;gap:14px;margin-top:6px}
.ep-msgs{max-height:56vh;overflow:auto;padding:4px 2px}.ep-msgs .msg{margin:0 0 16px}
.field.inline{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.field.inline>span{margin:0;flex:1;min-width:200px}.field.inline input[type=checkbox]{width:auto}.field.inline .hint{flex-basis:100%}
/* ---------- document pane ---------- */
.pane{border-left:1px solid var(--hair);background:var(--sheet);display:flex;flex-direction:column;min-height:0;min-width:0}
.pane .ph{padding:14px 18px 10px;border-bottom:1px solid var(--hair);display:flex;align-items:flex-start;gap:14px}.pane .pt{min-width:0;flex:1}.pane .ph b{display:block;font:600 15px/1.3 var(--serif)}.pane .ph .m{font-size:12px;color:var(--muted);margin-top:3px}
.pane .ph .lnk{flex:none;margin-top:0;padding:8px 2px}
.pane .nav{padding:6px 18px;border-bottom:1px solid var(--hair-2);font-size:12px;color:var(--muted);display:flex;gap:12px;align-items:center}
.pane .body{flex:1;overflow:auto;padding:18px 22px 40px;font:400 14.5px/1.7 var(--serif);color:var(--ink-2)}
.doc h1{font-size:18px;margin:0 0 10px;font-weight:600}.doc h2{font-size:15px;margin:20px 0 6px;font-weight:600}.doc h3{font-size:14px;margin:16px 0 4px;font-weight:600}.doc p{margin:0 0 10px;white-space:pre-wrap}.doc pre{font:12.5px/1.5 var(--mono);background:var(--paper);border:1px solid var(--hair);border-radius:var(--r);padding:8px 10px;overflow:auto;white-space:pre;margin:0 0 10px}
.doc table{border-collapse:collapse;font:13px var(--sans);margin:0 0 14px;width:100%;display:block;overflow:auto;font-variant-numeric:tabular-nums}.doc td,.doc th{border-bottom:1px solid var(--hair-2);padding:5px 9px;white-space:normal;text-align:left;vertical-align:top}.doc th{border-bottom:1px solid var(--hair);font-weight:500;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.doc mark{background:var(--mark);border-radius:2px;padding:1px 0;box-shadow:0 0 0 2px var(--mark)}
/* ---------- admin ---------- */
.admin{grid-column:1;overflow:auto;padding:26px 32px 40px;min-height:0}.ad-inner{max-width:1100px}
.ad-head{display:flex;align-items:baseline;gap:18px;margin-bottom:10px}.admin h1{margin:0;font:600 20px/1.2 var(--serif)}.admin h3{font-size:11px;letter-spacing:.08em;text-transform:uppercase;margin:22px 0 8px;font-weight:500;color:var(--muted)}
.admin p{max-width:760px}
.tabs{display:flex;gap:20px;margin-bottom:18px;border-bottom:1px solid var(--hair)}.tabs button{border:0;background:none;padding:8px 0;border-bottom:2px solid transparent;color:var(--muted);margin-bottom:-1px;font-size:13px}.tabs button.on{color:var(--ink);border-bottom-color:var(--ink)}.tabs button:hover{color:var(--ink)}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.toolbar input,.toolbar select{padding:7px 10px;border:1px solid var(--hair);border-radius:var(--r);background:var(--sheet)}.toolbar input:focus{outline:none;border-color:var(--ink)}.toolbar .grow{flex:1}
table.grid{border-collapse:collapse;width:100%;font-size:13px;background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r);overflow:hidden;font-variant-numeric:tabular-nums}table.grid th,table.grid td{border-bottom:1px solid var(--hair-2);padding:8px 10px;text-align:left;vertical-align:top}table.grid th{font-weight:500;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);background:var(--paper)}table.grid tr:last-child td{border-bottom:0}table.grid tr.click{cursor:pointer}table.grid tr.click:hover td{background:var(--paper)}
table.grid td.acts{white-space:nowrap}table.grid td.acts .lnk{margin-right:12px}
.kpis{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px;margin-bottom:8px}.kpi{background:var(--sheet);border:1px solid var(--hair);border-radius:var(--r);padding:12px 14px}.kpi b{display:block;font:600 20px/1.2 var(--serif);font-variant-numeric:tabular-nums}.kpi span{font-size:12px;color:var(--muted)}
.drop{border:1px dashed var(--hair);border-radius:var(--r);padding:22px;text-align:center;color:var(--muted);background:var(--sheet)}.drop.over{border-color:var(--ink);background:var(--accent-soft)}
.staging{border:1px solid var(--hair);border-radius:var(--r);padding:16px 18px;background:var(--sheet);margin-top:12px}.staging .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:10px}
/* ---------- responsive + print ---------- */
@media (max-width:860px){
  .app.single,.app.single.with-pane,.app.single.with-history{grid-template-columns:minmax(0,1fr)}
  .history{position:fixed;top:50px;left:0;bottom:0;width:min(310px,84vw);z-index:36;box-shadow:var(--shadow);border-right:1px solid var(--hair)}
  .hist-scrim{display:block;position:fixed;top:50px;left:0;right:0;bottom:0;z-index:35;background:rgba(31,27,22,.18)}
  .topbar{padding:0 10px;gap:8px}.topbar .who{max-width:130px}.topbar .brand small{display:none}
  .topbar .hist-btn{padding:4px 9px;font-size:12px}.topbar .split-btn{font-size:0;gap:0;padding:5px 8px}
  .topbar .pane-tabs{display:flex}.app.single:not(.split) .pane-tabs{display:none}
  .app.split .cols{grid-template-columns:minmax(0,1fr)}.app.split .col.side{display:none;border-left:0}.app.split.show-side-pane .col.side{display:flex}.app.split.show-side-pane .col.main{display:none}
  .pane{position:fixed;inset:50px 0 0 0;z-index:35}
  .strip{padding:8px 44px}
  .thread-inner{padding:22px 16px 12px}.composer{padding:6px 10px 12px}.admin{padding:18px 16px}
  .admin table.grid{display:block;overflow-x:auto;white-space:nowrap}
}
@media print{
  .topbar,.strip,.composer,.pane,.tools,#toasts,.status,.caret,.col.side{display:none!important}
  .app.single,.app.single.with-pane,.cols{display:block}
  .col{display:block}
  .thread{overflow:visible}
  .thread-inner{max-width:none;padding:0}
  .msg{margin:0 0 22px;break-inside:avoid}
  .msg.user{border-top:0}
  details.sources{break-inside:avoid}
  details.sources summary{cursor:default}
  .body table,.doc table{break-inside:avoid}
  .body tr,.doc tr{break-inside:avoid}
  .body h1,.body h2,.body h3,.body h4{break-after:avoid}
  body{background:#fff}
}
@page{margin:1.6cm}