:root {
  --bg: #f4f6f8; --panel: #ffffff; --panel-2: #eef2f5; --text: #15202b; --muted: #5b6875;
  --border: #d5dde4; --accent: #0f766e; --accent-ink: #ffffff; --accent-soft: #d8f0ec;
  --demand: #c2410c; --demand-soft: #fde8dc; --supply: #1d4ed8; --supply-soft: #dfe8fd;
  --focus: #7c3aed; --danger: #b91c1c; --ok: #15803d; --ok-soft: #dcfce7; --warn: #a16207; --shadow: 0 1px 2px rgb(0 0 0 / .06), 0 4px 16px rgb(0 0 0 / .05);
  --radius: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117; --panel: #161b22; --panel-2: #1f2630; --text: #e6edf3; --muted: #9aa7b4;
    --border: #2d3743; --accent: #2dd4bf; --accent-ink: #04211e; --accent-soft: #123a36;
    --demand: #fb923c; --demand-soft: #3a2415; --supply: #7aa2ff; --supply-soft: #1a2747;
    --focus: #c4b5fd; --danger: #f87171; --ok: #4ade80; --ok-soft: #12301f; --warn: #fbbf24; --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); display: flex; flex-direction: column; font-size: 15px; line-height: 1.45; }
button, input, select, textarea { font: inherit; color: inherit; }

/* Visible focus everywhere */
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
.cards:focus-visible, .chat-log:focus-visible { outline-offset: -3px; }

.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 8px; top: -60px; background: var(--accent); color: var(--accent-ink); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { top: 8px; }

kbd { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .78em; padding: 1px 5px; border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 4px; background: var(--panel-2); color: var(--text); }

/* ---------- top bar ---------- */
.topbar { display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { margin: 0; font-size: 1.15rem; display: flex; align-items: center; gap: 8px; }
.logo { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: var(--accent-ink); font-size: 16px; }
.controls { display: flex; gap: 12px; flex-wrap: wrap; margin-right: auto; }
.field-inline { display: flex; align-items: center; gap: 6px; color: var(--muted); font-size: .9rem; }
select, input[type=search], .field input, .field textarea, .field select {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; color: var(--text);
}
.actions { display: flex; gap: 8px; }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--panel); border-radius: 8px; padding: 7px 12px; cursor: pointer; }
.btn:hover { background: var(--panel-2); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.primary kbd { background: transparent; color: inherit; border-color: currentColor; opacity: .8; }
.btn.icon { width: 36px; height: 36px; justify-content: center; padding: 0; font-weight: 700; }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.danger { color: var(--danger); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }
.btn[hidden] { display: none; }

/* ---------- layout ---------- */
.layout { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(260px, 1fr) minmax(360px, 1.5fr) minmax(260px, 1fr); gap: 12px; padding: 12px; }
.pane { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); display: flex; flex-direction: column; min-height: 0; overflow: hidden; }
.pane-head { padding: 12px 14px 10px; border-bottom: 1px solid var(--border); }
.pane-head h2 { margin: 0; font-size: 1.02rem; display: flex; align-items: center; gap: 8px; }
.pane-sub { margin: 2px 0 8px; color: var(--muted); font-size: .85rem; }
.chat-pane .pane-sub { margin-bottom: 0; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.demand .dot { background: var(--demand); }
.supply .dot { background: var(--supply); }
.count { font-size: .75rem; font-weight: 600; background: var(--panel-2); border-radius: 999px; padding: 1px 8px; color: var(--muted); }
.filter { width: 100%; }
.relevance { margin-top: 8px; display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap;
  font-size: .82rem; background: var(--accent-soft); border: 1px solid var(--accent); border-radius: 8px; padding: 6px 8px; }
.relevance[hidden] { display: none; }
.btn.small { padding: 3px 8px; font-size: .8rem; }
.btn.small kbd { margin-left: 2px; }
.more-row { display: flex; justify-content: center; padding: 4px 0 8px; }

.pane-tabs { display: none; }

/* ---------- listing cards ---------- */
.cards { list-style: none; margin: 0; padding: 10px; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 8px; scroll-padding: 10px; }
.card {
  width: 100%; text-align: left; border: 1px solid var(--border); border-left: 4px solid var(--c); border-radius: 10px;
  padding: 10px 12px; background: var(--panel); cursor: pointer; display: grid; gap: 4px;
}
.demand .card { --c: var(--demand); --soft: var(--demand-soft); }
.supply .card { --c: var(--supply); --soft: var(--supply-soft); }
.card:hover { background: var(--panel-2); }
.card[aria-current="true"] { background: var(--soft); }
.card.matched { box-shadow: 0 0 0 2px var(--accent) inset; }
.card-title { font-weight: 600; }
.card-meta { display: flex; flex-wrap: wrap; gap: 4px 10px; color: var(--muted); font-size: .8rem; }
.tag { background: var(--soft); color: var(--text); border-radius: 999px; padding: 0 8px; font-size: .75rem; }
.card-desc { color: var(--muted); font-size: .85rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.empty { color: var(--muted); padding: 16px; text-align: center; font-size: .9rem; }

/* ---------- chat ---------- */
.chat-log { flex: 1; overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 88%; padding: 10px 12px; border-radius: 12px; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.user { align-self: flex-end; background: var(--accent); color: var(--accent-ink); border-bottom-right-radius: 4px; }
.msg.assistant { align-self: flex-start; background: var(--panel-2); border-bottom-left-radius: 4px; }
.msg.error { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.msg.typing { color: var(--muted); font-style: italic; }
.msg-label { font-size: .72rem; color: var(--muted); display: block; margin-bottom: 2px; white-space: normal; }
.msg.user .msg-label { color: inherit; opacity: .8; }

.matches { display: grid; gap: 8px; margin-top: 10px; white-space: normal; }
.match { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; display: grid; gap: 6px; }
.match-pair { display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px; align-items: start; }
.match-side { font-size: .85rem; }
.match-side strong { display: block; }
.match-side.d strong { color: var(--demand); }
.match-side.s strong { color: var(--supply); }
.match-side small { color: var(--muted); display: block; }
.match-link { align-self: center; color: var(--accent); font-weight: 700; }
.match-reason { font-size: .82rem; color: var(--muted); margin: 0; }
.match-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.match-actions .btn { padding: 4px 10px; font-size: .82rem; }
.proposal { margin-top: 10px; border: 1px dashed var(--accent); border-radius: 10px; padding: 8px 10px; white-space: normal; display: grid; gap: 6px; }

.suggestions { display: flex; gap: 6px; flex-wrap: wrap; padding: 0 14px 8px; }
.chip { border: 1px solid var(--border); background: var(--panel); border-radius: 999px; padding: 4px 12px; font-size: .85rem; cursor: pointer; }
.suggestions[hidden] { display: none; }
.chip:hover { background: var(--accent-soft); }

.composer { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 10px 14px 12px; border-top: 1px solid var(--border); }
.composer textarea {
  resize: none; min-height: 44px; max-height: 40vh; overflow-y: auto; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
}
.send { width: 44px; height: 44px; justify-content: center; padding: 0; align-self: end; }
.hint { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: .78rem; }

/* ---------- dialogs ---------- */
dialog { border: 1px solid var(--border); border-radius: 14px; padding: 0; background: var(--panel); color: var(--text); width: min(560px, calc(100vw - 24px)); max-height: calc(100vh - 32px); }
dialog::backdrop { background: rgb(0 0 0 / .45); }
.dialog-body { padding: 16px 18px; display: grid; gap: 12px; overflow-y: auto; max-height: calc(100vh - 34px); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.dialog-head h2 { margin: 0; font-size: 1.1rem; }
.dialog-foot { display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.field { display: grid; gap: 4px; font-size: .9rem; }
.field > span { color: var(--muted); }
.field textarea { resize: vertical; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.seg { border: 0; padding: 0; margin: 0; display: flex; gap: 8px; flex-wrap: wrap; }
.seg legend { color: var(--muted); font-size: .9rem; margin-bottom: 4px; }
.seg label { display: flex; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; cursor: pointer; }
.seg label:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.form-error { color: var(--danger); margin: 0; min-height: 1em; }
.keys { border-collapse: collapse; width: 100%; }
.keys td { padding: 6px 4px; border-bottom: 1px solid var(--border); vertical-align: top; }
.keys td:first-child { white-space: nowrap; width: 40%; }
.detail-grid { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0; }
.detail-grid dt { color: var(--muted); }
.detail-grid dd { margin: 0; overflow-wrap: anywhere; }

.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 8px 14px; border-radius: 8px; opacity: 0; pointer-events: none; transition: opacity .2s; }
.toast.show { opacity: 1; }

/* ---------- web of trust ---------- */
.muted { color: var(--muted); }
.ok-text { color: var(--ok); }
.warn-text { color: var(--warn); }
.pill { display: inline-flex; align-items: center; gap: 4px; font-size: .75rem; font-weight: 600; border: 1px solid var(--border); background: var(--panel-2); border-radius: 999px; padding: 1px 8px; color: var(--text); }
.pill.ok { border-color: var(--ok); background: var(--ok-soft); color: var(--ok); }
.avail { display: inline-flex; align-items: center; gap: 5px; }
.avail-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; border: 2px solid var(--muted); flex: none; }
.avail.on { color: var(--ok); font-weight: 600; }
.avail.on .avail-dot { background: var(--ok); border-color: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.avail.off { color: var(--muted); }
.avail-btn[aria-pressed="true"] { border-color: var(--ok); background: var(--ok-soft); }
.card-trust { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: .8rem; }
.trust-badge { color: var(--ok); }
.check { display: flex; align-items: center; gap: 6px; margin-top: 8px; font-size: .85rem; cursor: pointer; }
.check input { width: 16px; height: 16px; accent-color: var(--accent); }
.notice { border: 1px solid var(--accent); background: var(--accent-soft); border-radius: 8px; padding: 8px 10px; margin: 0; font-size: .88rem; }
.notice[hidden] { display: none; }
.hint.ok-text { color: var(--ok); }
dialog.wide-dialog { width: min(720px, calc(100vw - 24px)); }
.acc-section { border-top: 1px solid var(--border); padding-top: 10px; margin-top: 10px; display: grid; gap: 8px; }
.acc-section h3 { margin: 0; font-size: .98rem; }
.acc-section p { margin: 0; }
.dialog-body.flat { padding: 0; overflow: visible; max-height: none; gap: 8px; }
.notice.dialog-body.flat { padding: 10px; }
progress { width: 100%; height: 12px; accent-color: var(--ok); }
.copy-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; align-items: end; }
.copy-row input { width: 100%; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .85rem; }
.inline-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.inline-form input { flex: 1; min-width: 180px; background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; }
.plain-list, .ref-list, .member-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.plain-list li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px; align-items: center; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: .9rem; }
.row-actions { display: flex; gap: 6px; }
button.link { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; text-underline-offset: 2px; cursor: pointer; font: inherit; }
.ref-list li { background: var(--panel-2); border-radius: 8px; padding: 8px 10px; }
.ref-list blockquote { margin: 0; }
.ref-by { margin: 4px 0 0; font-size: .85rem; color: var(--muted); }
.badges { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; margin: 0; }
.trust-path { margin: 0; padding: 8px 10px; border-left: 3px solid var(--accent); background: var(--panel-2); border-radius: 6px; }
#profile-title { margin-right: auto; }
.member-list { max-height: 50vh; overflow-y: auto; }
.member-row { width: 100%; text-align: left; border: 1px solid var(--border); background: var(--panel); border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.member-row:hover { background: var(--panel-2); }
#account-btn kbd, #avail-btn kbd, #community-btn kbd { margin-left: 2px; }
.actions { flex-wrap: wrap; justify-content: flex-end; }

@media (max-width: 1600px) { .topbar .actions kbd { display: none; } .topbar { gap: 10px; } }

/* ---------- small screens: one pane at a time ---------- */
@media (max-width: 900px) {
  .topbar { gap: 6px 8px; padding: 8px 10px; }
  .brand { font-size: 1rem; }
  .controls { order: 3; width: 100%; gap: 8px; flex-wrap: nowrap; }
  .controls .field-inline:first-child { flex: 1; min-width: 0; }
  .controls select { min-width: 0; max-width: 100%; }
  #location-select { flex: 1; }
  .actions { margin-left: auto; }
  .btn.primary kbd, .composer .hint, .actions .wide, .actions kbd { display: none; }
  .copy-row { grid-template-columns: 1fr; }
  .composer { padding: 8px 10px; }
  .pane-tabs { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--panel); border-bottom: 1px solid var(--border); }
  .pane-tabs [role=tab] { border: 0; background: none; padding: 10px; border-bottom: 3px solid transparent; cursor: pointer; }
  .pane-tabs [role=tab][aria-selected=true] { border-bottom-color: var(--accent); font-weight: 600; }
  .layout { grid-template-columns: 1fr; padding: 8px; }
  .layout .pane { display: none; }
  .layout[data-active=demand] #pane-demand, .layout[data-active=chat] #pane-chat, .layout[data-active=supply] #pane-supply { display: flex; }
  .row { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }