/* Rocky UI — no external resources; light + dark via custom properties. */
:root {
  --bg: #f6f6f3;
  --panel: #ffffff;
  --panel-2: #f0f0ec;
  --hover: #ebebe6;
  --border: #e0e0da;
  --border-strong: #c9c9c1;
  --text: #1c1d1a;
  --muted: #696a63;
  --accent: #2f6f5e;
  --accent-hover: #285e50;
  --accent-contrast: #ffffff;
  --accent-soft: #e2efe9;
  --danger: #b3261e;
  --danger-soft: #fbe9e7;
  --warn: #855600;
  --warn-soft: #fcf0d6;
  --ok: #2e6b32;
  --ok-soft: #e4f2e5;
  --info: #2c5aa0;
  --info-soft: #e7edf8;
  --user-bubble: #e2efe9;
  --code-bg: #f0f0ec;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .05), 0 4px 14px rgba(0, 0, 0, .05);
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sidebar-w: 268px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141513;
    --panel: #1c1d1b;
    --panel-2: #242622;
    --hover: #2b2d29;
    --border: #31332e;
    --border-strong: #464941;
    --text: #e8e8e3;
    --muted: #a2a39b;
    --accent: #70c0a0;
    --accent-hover: #86cdb0;
    --accent-contrast: #0e1a15;
    --accent-soft: #1d3a2f;
    --danger: #f2a49d;
    --danger-soft: #3b1f1c;
    --warn: #f0c56a;
    --warn-soft: #3a2f14;
    --ok: #9ad49e;
    --ok-soft: #1e3320;
    --info: #9dbcf0;
    --info-soft: #1d2a40;
    --user-bubble: #1f3a30;
    --code-bg: #262824;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 14px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.45rem; font-weight: 650; }
h2 { font-size: 1.15rem; font-weight: 650; }
h3 { font-size: 1rem; font-weight: 650; }
p { margin: 0 0 .75em; }
code, pre, kbd { font-family: var(--mono); font-size: .88em; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--accent-soft); }

.boot { display: grid; place-items: center; min-height: 100vh; }
.boot-msg { color: var(--muted); }
.noscript { text-align: center; padding: 2rem; }

/* ---------- controls ---------- */
button, .btn {
  font: inherit;
  font-size: .9rem;
  font-weight: 550;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: .42rem .8rem;
  cursor: pointer;
  line-height: 1.2;
  white-space: nowrap;
}
button:hover:not(:disabled) { background: var(--hover); }
button:disabled { opacity: .55; cursor: default; }
button.primary, a.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-contrast); }
a.btn { text-decoration: none; display: inline-flex; align-items: center; justify-content: center; }
a.btn.primary:hover { background: var(--accent-hover); }
button.primary:hover:not(:disabled) { background: var(--accent-hover); }
button.danger { color: var(--danger); border-color: var(--border-strong); }
button.danger:hover:not(:disabled) { background: var(--danger-soft); }
button.ghost { border-color: transparent; background: transparent; }
button.ghost:hover:not(:disabled) { background: var(--hover); }
button.small { padding: .25rem .55rem; font-size: .82rem; }
button.icon { padding: .35rem .5rem; }

input, select, textarea {
  font: inherit;
  font-size: .93rem;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: .45rem .6rem;
  width: 100%;
  min-width: 0;
}
textarea { resize: vertical; line-height: 1.45; }
textarea.mono, input.mono { font-family: var(--mono); font-size: .86rem; }
input[type=checkbox], input[type=radio] { width: auto; accent-color: var(--accent); margin: 0; }
select { width: auto; max-width: 100%; }
select.full { width: 100%; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

label.field { display: flex; flex-direction: column; gap: .3rem; font-size: .85rem; font-weight: 550; color: var(--muted); }
label.field > input, label.field > select, label.field > textarea { color: var(--text); font-weight: 400; }
label.check { display: inline-flex; align-items: center; gap: .45rem; font-size: .9rem; cursor: pointer; }
.hint { font-size: .8rem; color: var(--muted); font-weight: 400; }
.form { display: flex; flex-direction: column; gap: .9rem; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: .9rem; }
.actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }
.actions.end { justify-content: flex-end; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: .82rem; }
.mono { font-family: var(--mono); }
.pre { white-space: pre-wrap; word-break: break-word; }
.error-text { color: var(--danger); font-size: .88rem; }
.center { text-align: center; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: .25rem;
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .02em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: .12rem .5rem;
  background: var(--panel-2);
  color: var(--muted);
  white-space: nowrap;
}
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.danger { background: var(--danger-soft); color: var(--danger); }
.badge.info { background: var(--info-soft); color: var(--info); }
.badge.accent { background: var(--accent-soft); color: var(--accent); }
.count {
  min-width: 1.35rem;
  height: 1.35rem;
  border-radius: 999px;
  background: var(--danger);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  display: inline-grid;
  place-items: center;
  padding: 0 .35rem;
}
@media (prefers-color-scheme: dark) { .count { color: #2a0f0c; } }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: .9rem; }
.card-head { display: flex; align-items: flex-start; gap: .75rem; margin-bottom: .6rem; flex-wrap: wrap; }
.card-head h2, .card-head h3 { margin: 0; }
.stack > * + * { margin-top: .9rem; }
.list { display: flex; flex-direction: column; gap: .6rem; }
.empty { color: var(--muted); padding: 1.5rem; text-align: center; border: 1px dashed var(--border-strong); border-radius: var(--radius); }

table.table { width: 100%; border-collapse: collapse; font-size: .88rem; }
table.table th, table.table td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid var(--border); vertical-align: top; }
table.table th { font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 650; }
.table-wrap { overflow-x: auto; }

details.disclosure > summary { cursor: pointer; color: var(--muted); font-size: .85rem; }

/* ---------- auth screens ---------- */
.auth {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem 1rem;
}
.auth-card { width: 100%; max-width: 440px; }
.auth-brand { display: flex; align-items: center; gap: .6rem; margin-bottom: 1.2rem; }
.auth-brand img { width: 34px; height: 34px; }
.auth-brand strong { font-size: 1.25rem; }
.secret-box {
  font-family: var(--mono);
  font-size: 1.05rem;
  letter-spacing: .06em;
  background: var(--code-bg);
  border-radius: var(--radius-sm);
  padding: .7rem .8rem;
  word-break: break-all;
  user-select: all;
}
.uri-box { font-size: .75rem; letter-spacing: 0; }
.code-input { font-family: var(--mono); font-size: 1.2rem; letter-spacing: .3em; text-align: center; }

/* ---------- shell ---------- */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  position: sticky;
  top: 0;
}
.side-top { padding: .9rem .9rem .6rem; display: flex; flex-direction: column; gap: .7rem; }
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 700; font-size: 1.05rem; }
.brand img { width: 26px; height: 26px; }
.nav { display: flex; flex-direction: column; padding: 0 .5rem; gap: 1px; }
.nav a {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .42rem .6rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .92rem;
}
.nav a:hover { background: var(--hover); text-decoration: none; }
.nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.nav .ico { width: 1.15rem; text-align: center; opacity: .8; }
.nav .count { margin-left: auto; }
.side-section {
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  font-weight: 650;
  padding: 1rem 1.1rem .35rem;
  display: flex;
  align-items: center;
}
.thread-list { flex: 1; overflow-y: auto; padding: 0 .5rem .75rem; }
.thread-item {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: .45rem .6rem;
  border-radius: var(--radius-sm);
  color: var(--text);
}
.thread-item:hover { background: var(--hover); text-decoration: none; }
.thread-item.active { background: var(--panel-2); }
.thread-item .t-title { font-size: .88rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: flex; gap: .35rem; align-items: center; }
.thread-item .t-title span.txt { overflow: hidden; text-overflow: ellipsis; }
.thread-item .t-meta { font-size: .74rem; color: var(--muted); display: flex; gap: .4rem; align-items: center; }
.dot { width: .5rem; height: .5rem; border-radius: 50%; background: var(--muted); display: inline-block; flex: none; }
.dot.running { background: var(--info); animation: pulse 1.2s ease-in-out infinite; }
.dot.awaiting_approval { background: var(--warn); }
.dot.error { background: var(--danger); }
@keyframes pulse { 50% { opacity: .35; } }
.side-foot { border-top: 1px solid var(--border); padding: .6rem .9rem; font-size: .8rem; color: var(--muted); display: flex; align-items: center; gap: .5rem; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; min-height: 100vh; min-height: 100dvh; }
.page { padding: 1.5rem clamp(1rem, 3vw, 2.2rem) 3rem; max-width: 1040px; width: 100%; }
.page-head { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-bottom: 1.1rem; }
.page-head h1 { margin: 0; }
.page-head .sub { color: var(--muted); font-size: .9rem; width: 100%; margin-top: -.2rem; }

.topbar { display: none; }

/* ---------- chat / thread ---------- */
.thread-view { display: flex; flex-direction: column; height: 100vh; height: 100dvh; }
.thread-head {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .7rem clamp(1rem, 3vw, 1.6rem);
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  flex-wrap: wrap;
}
.thread-head h1 { font-size: 1.05rem; margin: 0; cursor: text; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 46ch; }
.thread-head .controls { display: flex; gap: .45rem; align-items: center; margin-left: auto; flex-wrap: wrap; }
.thread-head select { font-size: .82rem; padding: .3rem .45rem; }
.messages { flex: 1; overflow-y: auto; padding: 1.2rem clamp(1rem, 3vw, 1.6rem) .5rem; display: flex; flex-direction: column; gap: .9rem; }
.messages-inner { max-width: 820px; width: 100%; margin: 0 auto; display: flex; flex-direction: column; gap: .85rem; }
.msg { display: flex; flex-direction: column; gap: .35rem; max-width: 100%; }
.msg.user { align-items: flex-end; }
.bubble {
  padding: .6rem .85rem;
  border-radius: 14px;
  max-width: min(680px, 100%);
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.msg.user .bubble { background: var(--user-bubble); border-bottom-right-radius: 4px; white-space: pre-wrap; }
.msg.assistant .bubble { background: var(--panel); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg .label { font-size: .72rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; font-weight: 650; }
.msg .provider { font-size: .72rem; color: var(--muted); }
.trigger-box { max-height: 220px; overflow: auto; font-size: .85rem; }

details.tool {
  border: 1px solid var(--border);
  background: var(--panel-2);
  border-radius: 8px;
  font-size: .82rem;
  max-width: min(680px, 100%);
}
details.tool > summary {
  cursor: pointer;
  padding: .3rem .6rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: .4rem;
  color: var(--muted);
}
details.tool > summary::-webkit-details-marker { display: none; }
details.tool > summary::before { content: "▸"; font-size: .7rem; transition: transform .1s; }
details.tool[open] > summary::before { transform: rotate(90deg); }
details.tool .tname { font-family: var(--mono); color: var(--text); }
details.tool.err .tname { color: var(--danger); }
details.tool .tool-body { padding: .2rem .6rem .6rem; }
details.tool pre { margin: .2rem 0 .5rem; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: .45rem .55rem; max-height: 320px; overflow: auto; white-space: pre-wrap; word-break: break-word; }
.tool-label { font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 650; }
.tool-group { display: flex; flex-direction: column; gap: .3rem; align-items: flex-start; }

.status-line { display: flex; align-items: center; gap: .5rem; font-size: .85rem; color: var(--muted); padding: .25rem 0; }
.typing { display: inline-flex; gap: 3px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--muted); animation: blink 1.2s infinite ease-in-out; }
.typing i:nth-child(2) { animation-delay: .15s; }
.typing i:nth-child(3) { animation-delay: .3s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }

.approval {
  border: 1px solid var(--warn);
  background: var(--warn-soft);
  border-radius: var(--radius);
  padding: .8rem .9rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  max-width: 720px;
}
.approval.done { border-color: var(--border); background: var(--panel); }
.approval .a-head { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; font-size: .85rem; }
.approval .a-title { font-weight: 650; }
.approval .a-body {
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: .55rem .65rem;
  font-size: .88rem;
  max-height: 340px;
  overflow: auto;
}
.approval .a-result { font-size: .82rem; color: var(--muted); white-space: pre-wrap; max-height: 120px; overflow: auto; }
.approval .a-note {
  font-size: .82rem;
  color: var(--muted);
  border-left: 3px solid var(--info);
  background: var(--info-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: .45rem .6rem;
}
.approval .a-note strong { color: var(--text); font-weight: 600; }

.status-line .stop { margin-left: .25rem; }

.callout {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  border: 1px solid var(--warn);
  background: var(--warn-soft);
  border-radius: var(--radius);
  padding: .7rem .9rem;
  font-size: .9rem;
}
.callout .grow { flex: 1 1 260px; }

.composer-wrap { padding: .6rem clamp(1rem, 3vw, 1.6rem) 1rem; background: linear-gradient(to bottom, transparent, var(--bg) 30%); }
.composer {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  gap: .5rem;
  align-items: flex-end;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: .45rem .45rem .45rem .8rem;
  box-shadow: var(--shadow);
}
.composer:focus-within { border-color: var(--accent); }
.composer textarea { border: 0; padding: .35rem 0; resize: none; background: transparent; max-height: 40vh; }
.composer textarea:focus { outline: none; }
.composer button { border-radius: 10px; }

.welcome { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 2rem 1rem; gap: 1.2rem; text-align: center; }
.welcome h1 { font-size: 1.6rem; }
.suggestions { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: center; max-width: 720px; }
.suggestions button { font-weight: 450; border-radius: 999px; background: var(--panel); white-space: normal; text-align: left; }

/* ---------- markdown ---------- */
.md > :first-child { margin-top: 0; }
.md > :last-child { margin-bottom: 0; }
.md p { margin: 0 0 .6em; }
.md ul, .md ol { margin: 0 0 .6em; padding-left: 1.35em; }
.md li { margin: .15em 0; }
.md li > ul, .md li > ol { margin: .15em 0; }
.md h3, .md h4, .md h5, .md h6 { margin: .9em 0 .4em; font-size: 1rem; }
.md h3 { font-size: 1.08rem; }
.md code { background: var(--code-bg); padding: .08em .3em; border-radius: 4px; }
.md pre.code { background: var(--code-bg); padding: .6rem .7rem; border-radius: 8px; overflow-x: auto; margin: 0 0 .6em; }
.md pre.code code { background: none; padding: 0; }
.md blockquote { margin: 0 0 .6em; padding: .1em .8em; border-left: 3px solid var(--border-strong); color: var(--muted); }
.md hr { border: 0; border-top: 1px solid var(--border); margin: .9em 0; }
.md table { border-collapse: collapse; margin: 0 0 .6em; font-size: .9em; display: block; overflow-x: auto; max-width: 100%; }
.md th, .md td { border: 1px solid var(--border); padding: .3em .55em; text-align: left; }
.md th { background: var(--panel-2); }

/* ---------- lists of items ---------- */
.item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem .9rem;
  display: flex;
  gap: .75rem;
  align-items: flex-start;
}
.item .grow { flex: 1; min-width: 0; }
.item .i-title { font-weight: 600; display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.item .i-sub { font-size: .84rem; color: var(--muted); margin-top: .15rem; }
.item .i-body { margin-top: .35rem; font-size: .9rem; white-space: pre-wrap; word-break: break-word; }
.item.clickable { cursor: pointer; }
.item.clickable:hover { border-color: var(--border-strong); }
.item.done .i-title { text-decoration: line-through; color: var(--muted); }

.switch { position: relative; width: 36px; height: 20px; flex: none; }
.switch input { opacity: 0; width: 100%; height: 100%; position: absolute; inset: 0; cursor: pointer; z-index: 1; margin: 0; }
.switch .track { position: absolute; inset: 0; border-radius: 999px; background: var(--border-strong); transition: background .15s; }
.switch .track::after { content: ""; position: absolute; width: 16px; height: 16px; left: 2px; top: 2px; border-radius: 50%; background: #fff; transition: transform .15s; box-shadow: 0 1px 2px rgba(0,0,0,.25); }
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(16px); }
.switch input:focus-visible + .track { outline: 2px solid var(--accent); outline-offset: 2px; }

.tabs { display: flex; gap: .3rem; border-bottom: 1px solid var(--border); margin-bottom: 1rem; flex-wrap: wrap; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; padding: .5rem .7rem; color: var(--muted); }
.tabs button.active { color: var(--accent); border-bottom-color: var(--accent); }

.grid-2 { display: grid; grid-template-columns: 220px 1fr; gap: 1.2rem; align-items: start; }
.page-nav { display: flex; flex-direction: column; gap: 2px; position: sticky; top: 1rem; }
.page-nav a { padding: .4rem .6rem; border-radius: var(--radius-sm); color: var(--text); font-size: .9rem; display: flex; justify-content: space-between; gap: .4rem; }
.page-nav a:hover { background: var(--hover); text-decoration: none; }
.page-nav a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.trigger-row {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .7rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  background: var(--panel-2);
}
.trigger-row .tr-head { display: flex; gap: .5rem; align-items: center; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .5rem .9rem; }
.checks label { align-items: flex-start; }
.checks .hint { display: block; }
.kv-row { display: grid; grid-template-columns: 1fr 1.4fr auto; gap: .4rem; }
.days { display: flex; gap: .5rem; flex-wrap: wrap; }
.days label { padding: .3rem .5rem; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); }
.reveal { background: var(--warn-soft); border: 1px solid var(--warn); border-radius: var(--radius-sm); padding: .7rem .8rem; display: flex; flex-direction: column; gap: .4rem; }
.reveal pre { margin: 0; white-space: pre-wrap; word-break: break-all; font-size: .82rem; }
.kvs { display: grid; grid-template-columns: max-content 1fr; gap: .3rem .9rem; font-size: .9rem; }
.kvs dt { color: var(--muted); }
.kvs dd { margin: 0; word-break: break-word; }

/* ---------- modal & toasts ---------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, .4); display: grid; place-items: center; padding: 1rem; z-index: 50; }
.modal { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; max-width: 720px; max-height: 88vh; display: flex; flex-direction: column; border: 1px solid var(--border); }
.modal-head { display: flex; align-items: center; padding: .8rem 1rem; border-bottom: 1px solid var(--border); gap: .5rem; }
.modal-head h2 { margin: 0; font-size: 1.05rem; flex: 1; }
.modal-body { padding: 1rem; overflow: auto; }
.modal-foot { padding: .7rem 1rem; border-top: 1px solid var(--border); display: flex; gap: .5rem; justify-content: flex-end; flex-wrap: wrap; }

.toasts { position: fixed; bottom: 1rem; right: 1rem; display: flex; flex-direction: column; gap: .5rem; z-index: 100; max-width: min(420px, calc(100vw - 2rem)); }
.toast { background: var(--text); color: var(--bg); padding: .6rem .85rem; border-radius: var(--radius-sm); box-shadow: var(--shadow); font-size: .9rem; animation: slidein .15s ease-out; }
.toast.error { background: var(--danger); color: #fff; }
@media (prefers-color-scheme: dark) { .toast.error { color: #2a0f0c; } }
@keyframes slidein { from { transform: translateY(8px); opacity: 0; } }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .topbar {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem .75rem;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
  }
  .topbar .brand { font-size: 1rem; }
  .topbar .count { margin-left: auto; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform .18s ease-out;
    box-shadow: var(--shadow);
  }
  body.nav-open .sidebar { transform: none; }
  .scrim { position: fixed; inset: 0; background: rgba(0, 0, 0, .35); z-index: 30; display: none; }
  body.nav-open .scrim { display: block; }
  .shell { flex-direction: column; }
  .thread-view { height: calc(100dvh - 49px); }
  .thread-head h1 { max-width: 100%; flex: 1 1 100%; }
  .thread-head .controls { margin-left: 0; }
  .grid-2 { grid-template-columns: 1fr; }
  .page-nav { position: static; flex-direction: row; flex-wrap: wrap; }
  .kv-row { grid-template-columns: 1fr; }
  .page { padding-top: 1rem; }
}
@media (min-width: 821px) { .scrim { display: none; } }

hr.sep { border: 0; border-top: 1px solid var(--border); margin: .7rem 0 1rem; }