:root {
  --bg: #f4f2ee;
  --panel: #ffffff;
  --panel-2: #faf9f6;
  --line: #dedad2;
  --text: #1d1c1a;
  --muted: #6b675f;
  --accent: #8a3324;
  --accent-soft: #f3e4df;
  --mark: #ffe58a;
  --quote: #5b6b7a;
  --quote-bg: #f2f5f8;
  --warn: #9a6200;
  --warn-bg: #fff4d6;
  --bar: #1d1c1a;
  --mono: ui-monospace, "Cascadia Mono", Consolas, "DejaVu Sans Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161514; --panel: #1f1e1c; --panel-2: #262422; --line: #38352f; --text: #ece8e1;
    --muted: #a39d92; --accent: #e08a76; --accent-soft: #3a2621; --mark: #6b5a12;
    --quote: #9fb2c4; --quote-bg: #23282d; --warn: #e6b450; --warn-bg: #3a3016; --bar: #000;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { font: 14px/1.45 var(--sans); color: var(--text); background: var(--bg); display: flex; flex-direction: column; }
a { color: var(--accent); }
button, input, select { font: inherit; color: inherit; }
h1, h2, h3 { margin: 0; }
mark { background: var(--mark); color: inherit; border-radius: 2px; padding: 0 1px; }

/* top bar */
.topbar { display: flex; align-items: center; gap: 14px; padding: 8px 14px; background: var(--panel);
  border-bottom: 1px solid var(--line); flex: none; }
.brand { font: 600 17px var(--serif); color: var(--text); text-decoration: none; white-space: nowrap; }
.brand .sub { display: block; font: 400 11px var(--sans); color: var(--muted); letter-spacing: .02em; }
#searchForm { flex: 1; display: flex; gap: 6px; max-width: 760px; }
#q { flex: 1; min-width: 0; padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel-2); }
#q:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
#searchForm button { padding: 7px 14px; border: 1px solid var(--accent); background: var(--accent); color: #fff; border-radius: 6px; cursor: pointer; }
.toplink { margin-left: auto; white-space: nowrap; font-size: 13px; }
.icon-btn { display: none; border: 1px solid var(--line); background: var(--panel-2); border-radius: 6px; padding: 4px 9px; cursor: pointer; }

/* three panes */
.layout { flex: 1; min-height: 0; display: grid; grid-template-columns: 250px minmax(300px, 400px) minmax(0, 1fr); }
#sidebar, #listPane, #reader { min-height: 0; overflow-y: auto; }
#sidebar { background: var(--panel-2); border-right: 1px solid var(--line); padding: 10px 12px 30px; }
#listPane { background: var(--panel); border-right: 1px solid var(--line); }
#reader { background: var(--panel); overflow-x: hidden; }

/* sidebar */
#sidebar h3 { font: 600 11px var(--sans); text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin: 18px 0 6px; }
.kinds { display: flex; flex-direction: column; gap: 2px; }
.kinds a { display: flex; justify-content: space-between; padding: 6px 9px; border-radius: 6px; color: var(--text); text-decoration: none; }
.kinds a:hover { background: var(--line); }
.kinds a.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.count { color: var(--muted); font-variant-numeric: tabular-nums; font-weight: 400; }
.chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chips a { padding: 2px 7px; border: 1px solid var(--line); border-radius: 999px; font-size: 12px; text-decoration: none; color: var(--text); background: var(--panel); }
.chips a small { color: var(--muted); }
.chips a.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.chips a.on small { color: #fff; opacity: .8; }
.range { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-top: 8px; font-size: 11px; color: var(--muted); }
.range input { display: block; width: 100%; margin-top: 2px; padding: 3px 4px; border: 1px solid var(--line); border-radius: 5px; background: var(--panel); font-size: 12px; color-scheme: light dark; }
#senderFilter { width: 100%; padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); margin-bottom: 4px; }
.facet { list-style: none; margin: 0; padding: 0; }
.facet a { display: flex; justify-content: space-between; gap: 8px; padding: 3px 6px; border-radius: 5px; color: var(--text); text-decoration: none; font-size: 13px; }
.facet a span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.facet a:hover { background: var(--line); }
.facet a.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.link-btn { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 4px 6px; font-size: 12px; }
.check { display: flex; gap: 7px; align-items: center; padding: 3px 0; font-size: 13px; cursor: pointer; }
.active { margin-top: 10px; font-size: 12px; }
.active .pill { display: inline-flex; gap: 5px; align-items: center; margin: 0 4px 4px 0; padding: 2px 4px 2px 8px; background: var(--accent-soft); color: var(--accent); border-radius: 999px; }
.active .pill a { text-decoration: none; padding: 0 4px; font-weight: 700; }

/* list */
.listhead { position: sticky; top: 0; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 7px 12px; background: var(--panel); border-bottom: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.listhead select { border: 1px solid var(--line); background: var(--panel-2); border-radius: 5px; padding: 2px 4px; font-size: 12px; }
.item { display: block; padding: 9px 12px; border-bottom: 1px solid var(--line); color: var(--text); text-decoration: none; border-left: 3px solid transparent; }
.item:hover { background: var(--panel-2); }
.item.on { background: var(--accent-soft); border-left-color: var(--accent); }
.item .row1 { display: flex; justify-content: space-between; gap: 8px; }
.item .from { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item .from.blank { font-weight: 400; font-style: italic; color: var(--muted); }
.item .date { flex: none; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.item .subj { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item .snip { color: var(--muted); font-size: 12.5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.item .meta { margin-top: 3px; font: 11px var(--mono); color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.badge { font: 600 10.5px var(--sans); padding: 0 6px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); background: var(--panel); }
.badge.warn { color: var(--warn); background: var(--warn-bg); border-color: transparent; }
.badge.red { color: #fff; background: var(--bar); border-color: transparent; }
.sentinel { padding: 14px; text-align: center; color: var(--muted); font-size: 12px; min-height: 40px; }

/* reader */
.empty { padding: 15vh 30px; text-align: center; color: var(--muted); }
.empty .hint { font-size: 12px; }
.doc { padding: 0 0 60px; }
.docbar { position: sticky; top: 0; z-index: 3; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 7px 18px;
  background: var(--panel); border-bottom: 1px solid var(--line); font-size: 12px; }
.docbar .bates { font: 12px var(--mono); color: var(--muted); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg button { border: 0; background: var(--panel-2); padding: 4px 10px; cursor: pointer; font-size: 12px; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent); color: #fff; }
.docbar .spacer { flex: 1; }
.backBtn { display: none; }
.cols { display: block; }
.textcol { padding: 16px 22px; min-width: 0; }
.pagecol { padding: 12px 22px; min-width: 0; }
.doc.v-text .pagecol { display: none; }
.doc.v-pages .textcol { display: none; }
.doc.v-split .cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.doc.v-split .pagecol { border-left: 1px solid var(--line); position: sticky; top: 38px; align-self: start; max-height: calc(100vh - 90px); overflow-y: auto; }
body.split #sidebar, body.split #listPane { display: none; }
body.split .layout { grid-template-columns: minmax(0, 1fr); }

.doc h1 { font: 600 21px/1.25 var(--serif); margin-bottom: 10px; overflow-wrap: anywhere; }
.hdr { border-collapse: collapse; width: 100%; margin-bottom: 10px; }
.hdr th { text-align: left; vertical-align: top; width: 92px; padding: 2px 10px 2px 0; color: var(--muted); font-weight: 500; white-space: nowrap; }
.hdr td { padding: 2px 0; overflow-wrap: anywhere; }
.hdr .parsed { color: var(--muted); font-size: 12px; }
.note { color: var(--muted); font-style: italic; }
.chip { display: inline-block; font: 600 10.5px var(--sans); padding: 1px 7px; border-radius: 4px; background: var(--bar); color: #fff; vertical-align: 1px; }
.prov { font-size: 12px; color: var(--muted); background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; margin: 10px 0 16px; }
.prov b { color: var(--text); font-weight: 600; }
.prov code, .mono { font: 11.5px var(--mono); overflow-wrap: anywhere; }
.prov .warnline { color: var(--warn); }
.prov div + div { margin-top: 3px; }

.bodytext { white-space: pre-wrap; overflow-wrap: anywhere; font: 15px/1.55 var(--serif); margin: 0; }
.part { margin: 14px 0 0; border-left: 3px solid var(--quote); background: var(--quote-bg); border-radius: 0 6px 6px 0; }
.part > summary { cursor: pointer; padding: 6px 12px; font-size: 12px; color: var(--quote); list-style: none; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.part > summary::-webkit-details-marker { display: none; }
.part > summary::before { content: "▸"; }
.part[open] > summary::before { content: "▾"; }
.part .kind { font-weight: 700; text-transform: uppercase; letter-spacing: .05em; font-size: 10.5px; }
.part .who { color: var(--text); font-weight: 600; }
.part .pg { margin-left: auto; font: 11px var(--mono); }
.part .marker { white-space: pre-wrap; overflow-wrap: anywhere; font: 12px var(--mono); color: var(--quote); padding: 0 12px 6px; margin: 0; }
.part .bodytext { padding: 0 12px 10px; font-size: 14px; }
.url { display: inline-block; max-width: 280px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font: 600 11px var(--sans); padding: 0 8px; margin: 0 2px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--accent); background: var(--panel-2); cursor: pointer; vertical-align: 1px; }
.url::before { content: "link · "; font-weight: 400; color: var(--muted); }
.url:hover, .url:focus-visible { border-color: var(--accent); outline: none; }
.urlfull { font: 12px var(--mono); overflow-wrap: anywhere; }
.redact { background: var(--warn-bg); color: var(--warn); border-radius: 2px; }
.redact.r-bar { background: var(--bar); color: var(--bar); border-radius: 1px; }
.redact.r-bar::selection { color: #fff; }

.thread { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 12px; }
.thread h2, .pagecol h2 { font: 600 11px var(--sans); text-transform: uppercase; letter-spacing: .07em; color: var(--muted); margin-bottom: 6px; }
.thread a { display: grid; grid-template-columns: 96px minmax(0, 190px) minmax(0, 1fr); gap: 10px; padding: 4px 6px; border-radius: 5px; color: var(--text); text-decoration: none; font-size: 13px; }
.thread a > span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread a:hover { background: var(--panel-2); }
.thread a.on { background: var(--accent-soft); font-weight: 600; }
.thread .d { color: var(--muted); font-variant-numeric: tabular-nums; }

.pager { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 12px; margin-bottom: 8px; }
.pager button { border: 1px solid var(--line); background: var(--panel-2); border-radius: 5px; padding: 3px 9px; cursor: pointer; }
.pager button:disabled { opacity: .4; cursor: default; }
.pager select { border: 1px solid var(--line); background: var(--panel-2); border-radius: 5px; padding: 2px 4px; font: 12px var(--mono); max-width: 100%; }
.pageimg { display: block; width: 100%; height: auto; border: 1px solid var(--line); background: #fff; min-height: 200px; }
/* image view: summary on top, pages stacked, thread/attachments below */
.imgsum, .imgafter { display: none; }
.doc.v-pages .imgsum, .doc.v-pages .imgafter { display: block; }
.doc.v-pages .pagehead, .doc.v-pages [data-act="raw"] { display: none; }
.doc.v-pages .pagecol { max-width: 1000px; margin: 0 auto; padding-top: 16px; }
.imgsum h1 { font: 600 20px/1.25 var(--serif); margin-bottom: 4px; overflow-wrap: anywhere; }
.imgsum .note { font-size: 12.5px; margin-bottom: 14px; }
.stackpage { margin: 0 0 22px; scroll-margin-top: 48px; }
.stackpage figcaption { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.stackpage .pageimg { min-height: 400px; box-shadow: 0 1px 6px rgba(0,0,0,.18); }
.imgafter .thread:first-child { margin-top: 6px; }
.pagetext { margin-top: 12px; }
.metatable { border-collapse: collapse; font-size: 12.5px; margin: 6px 0 14px; }
.metatable th { text-align: left; color: var(--muted); font-weight: 500; padding: 2px 12px 2px 0; vertical-align: top; white-space: nowrap; }
.metatable td { overflow-wrap: anywhere; }

.about { max-width: 820px; padding: 22px 26px 60px; }
.about h1 { font: 600 24px var(--serif); margin-bottom: 8px; }
.about h2 { font: 600 16px var(--serif); margin: 22px 0 6px; }
.about table { border-collapse: collapse; margin: 6px 0; }
.about td, .about th { border: 1px solid var(--line); padding: 4px 10px; text-align: left; font-size: 13px; }
.about code { font: 12px var(--mono); overflow-wrap: anywhere; }

#scrim { position: fixed; inset: 0; background: rgba(0,0,0,.35); z-index: 9; }

@media (max-width: 1100px) {
  .layout { grid-template-columns: minmax(280px, 360px) minmax(0, 1fr); }
  #sidebar { position: fixed; z-index: 10; top: 0; bottom: 0; left: 0; width: 280px; transform: translateX(-100%); transition: transform .15s; }
  body.menu #sidebar { transform: none; box-shadow: 0 0 30px rgba(0,0,0,.3); }
  .icon-btn { display: inline-block; }
  .toplink { display: none; }
}
@media (max-width: 760px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  #reader { display: none; }
  body.hasdoc #listPane { display: none; }
  body.hasdoc #reader { display: block; }
  .backBtn { display: inline-block; }
  .brand .sub { display: none; }
  .doc.v-split .cols { display: block; }
  .doc.v-split .pagecol { position: static; max-height: none; border-left: 0; border-top: 1px solid var(--line); }
  .textcol, .pagecol { padding: 12px 14px; }
  #searchForm button { display: none; }
}

/* tidy view: link addresses folded to an icon, image placeholders */
.lnk { text-decoration: none; color: var(--accent); font-size: .8em; margin: 0 1px 0 3px; vertical-align: 1px; }
.lnk:hover { text-decoration: underline; }
.imgph { color: var(--muted); font-size: .85em; font-style: italic; }