:root {
  --bg: #faf9f5;
  --bg-sidebar: #f3f1ea;
  --surface: #ffffff;
  --surface-2: #f0eee6;
  --hover: rgba(20, 20, 19, .05);
  --bubble: #efece3;
  --text: #141413;
  --text-2: #3d3d3a;
  --muted: #75736b;
  --border: #e3e0d6;
  --border-strong: #cfcbbd;
  --accent: #c96442;
  --accent-hover: #b0532f;
  --accent-soft: #f6e7e0;
  --accent-text: #ffffff;
  --ok: #2c7a4b;
  --warn: #a76a12;
  --danger: #b3261e;
  --danger-soft: #fbeae8;
  --add: #e3f2e6;
  --add-text: #1f5f34;
  --del: #fbe7e5;
  --del-text: #8f2720;
  --code-bg: #f1eee6;
  --shadow: 0 1px 2px rgba(20, 20, 19, .05), 0 6px 24px rgba(20, 20, 19, .06);
  --font-ui: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Source Serif 4", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  --radius: 14px;
  --sidebar-w: 288px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #262624;
    --bg-sidebar: #1e1d1c;
    --surface: #30302e;
    --surface-2: #393937;
    --hover: rgba(245, 244, 238, .06);
    --bubble: #3a3936;
    --text: #f5f4ee;
    --text-2: #cfcdc3;
    --muted: #9c9a91;
    --border: #3b3b38;
    --border-strong: #4d4c48;
    --accent: #d97757;
    --accent-hover: #e48c6e;
    --accent-soft: #3f2c24;
    --ok: #6cc28f;
    --warn: #e0a54a;
    --danger: #f08178;
    --danger-soft: #3f2422;
    --add: #1f3826;
    --add-text: #9ad7ad;
    --del: #432523;
    --del-text: #f2aaa3;
    --code-bg: #1f1e1d;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #262624;
  --bg-sidebar: #1e1d1c;
  --surface: #30302e;
  --surface-2: #393937;
  --hover: rgba(245, 244, 238, .06);
  --bubble: #3a3936;
  --text: #f5f4ee;
  --text-2: #cfcdc3;
  --muted: #9c9a91;
  --border: #3b3b38;
  --border-strong: #4d4c48;
  --accent: #d97757;
  --accent-hover: #e48c6e;
  --accent-soft: #3f2c24;
  --ok: #6cc28f;
  --warn: #e0a54a;
  --danger: #f08178;
  --danger-soft: #3f2422;
  --add: #1f3826;
  --add-text: #9ad7ad;
  --del: #432523;
  --del-text: #f2aaa3;
  --code-bg: #1f1e1d;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 28px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 var(--font-ui);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
svg.i { width: 18px; height: 18px; flex: none; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- layout ---------- */
.app { display: flex; height: 100dvh; }
.sidebar {
  width: var(--sidebar-w);
  flex: none;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
  transition: margin-left .2s ease;
}
.app.collapsed .sidebar { margin-left: calc(-1 * var(--sidebar-w)); }
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; position: relative; }
.scrim { display: none; }

@media (max-width: 860px) {
  .sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 40;
    width: min(86vw, 320px);
    transform: translateX(-100%);
    transition: transform .22s ease;
    box-shadow: var(--shadow);
    padding-top: env(safe-area-inset-top);
  }
  .app.collapsed .sidebar { margin-left: 0; }
  .app.drawer .sidebar { transform: none; }
  .app.drawer .scrim { display: block; position: fixed; inset: 0; z-index: 30; background: rgba(0, 0, 0, .35); }
}

/* ---------- sidebar ---------- */
.sb-top { display: flex; align-items: center; gap: 6px; padding: 12px 12px 6px; }
.brand { display: flex; align-items: center; gap: 9px; font: 600 19px/1 var(--font-serif); letter-spacing: -.01em; margin-right: auto; padding-left: 4px; }
.brand-mark { width: 26px; height: 26px; border-radius: 8px; background: var(--accent); display: grid; place-items: center; color: #fff; }
.brand-mark svg { width: 16px; height: 16px; stroke: #fff; stroke-width: 2.2; fill: none; stroke-linecap: round; }
.icon-btn {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px; border-radius: 9px;
  border: 0; background: transparent; color: var(--text-2);
}
.icon-btn:hover { background: var(--hover); color: var(--text); }
.new-btn {
  display: flex; align-items: center; gap: 10px;
  margin: 4px 10px 8px; padding: 9px 12px;
  border: 0; border-radius: 10px; background: transparent;
  font-weight: 550; color: var(--text);
}
.new-btn .plus { width: 26px; height: 26px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; }
.new-btn .plus svg { width: 15px; height: 15px; stroke-width: 2.4; }
.new-btn:hover { background: var(--hover); }

.machine-pick { margin: 0 10px 8px; position: relative; }
.machine-btn {
  width: 100%; display: flex; align-items: center; gap: 9px;
  padding: 8px 10px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface);
  text-align: left;
}
.machine-btn .name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 550; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); flex: none; }
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 18%, transparent); }
.dot.busy { background: var(--accent); animation: pulse 1.4s ease-in-out infinite; }
.dot.wait { background: var(--warn); }
@keyframes pulse { 50% { opacity: .35; } }

.search { margin: 0 10px 6px; position: relative; }
.search input {
  width: 100%; padding: 8px 10px 8px 32px; border-radius: 10px;
  border: 1px solid transparent; background: var(--hover); outline: none;
}
.search input:focus { border-color: var(--border-strong); background: var(--surface); }
.search svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); width: 15px; height: 15px; color: var(--muted); }

.sessions { flex: 1; overflow-y: auto; padding: 4px 6px 12px; overscroll-behavior: contain; }
.group-label { font-size: 12px; font-weight: 600; color: var(--muted); padding: 14px 10px 6px; }
.s-item {
  display: block; width: 100%; text-align: left;
  border: 0; background: transparent; border-radius: 9px;
  padding: 8px 10px; color: var(--text-2);
}
.s-item:hover { background: var(--hover); }
.s-item.active { background: var(--surface-2); color: var(--text); }
.s-title { display: flex; align-items: center; gap: 7px; }
.s-title .t { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.s-meta { font-size: 12px; color: var(--muted); margin-top: 1px; display: flex; gap: 6px; overflow: hidden; white-space: nowrap; }
.s-meta .tag { color: var(--accent); font-weight: 600; }
.badge-need { font-size: 11px; font-weight: 700; background: var(--warn); color: #fff; border-radius: 999px; padding: 1px 7px; }
.empty-note { color: var(--muted); font-size: 13px; padding: 16px 12px; }

.sb-foot { border-top: 1px solid var(--border); padding: 8px 10px calc(8px + env(safe-area-inset-bottom)); position: relative; }
.account-btn { width: 100%; display: flex; align-items: center; gap: 10px; padding: 7px 8px; border: 0; border-radius: 10px; background: transparent; text-align: left; }
.account-btn:hover { background: var(--hover); }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--text-2); color: var(--bg); display: grid; place-items: center; font-weight: 650; font-size: 13px; flex: none; }
.account-btn .email { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }

/* ---------- menus & sheets ---------- */
.menu {
  position: absolute; z-index: 60; min-width: 220px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow); padding: 6px;
}
.menu button, .menu .row {
  width: 100%; display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border: 0; background: transparent; border-radius: 8px; text-align: left; font-size: 14px;
}
.menu button:hover { background: var(--hover); }
.menu .sep { height: 1px; background: var(--border); margin: 5px 4px; }
.menu .hint { font-size: 12px; color: var(--muted); padding: 2px 10px 6px; }
.menu .check { margin-left: auto; color: var(--accent); }
.menu .sub { display: block; font-size: 12px; color: var(--muted); }

.sheet-wrap { position: fixed; inset: 0; z-index: 80; display: flex; align-items: center; justify-content: center; background: rgba(0, 0, 0, .38); padding: 16px; }
.sheet {
  width: min(560px, 100%); max-height: min(78dvh, 720px);
  display: flex; flex-direction: column;
  background: var(--surface); border-radius: 16px; border: 1px solid var(--border); box-shadow: var(--shadow);
}
.sheet header { display: flex; align-items: center; gap: 8px; padding: 14px 14px 10px 18px; border-bottom: 1px solid var(--border); }
.sheet header h2 { margin: 0; font: 600 18px/1.2 var(--font-serif); flex: 1; }
.sheet .body { overflow-y: auto; padding: 10px 12px 14px; }
.sheet footer { display: flex; gap: 8px; justify-content: flex-end; padding: 10px 14px 14px; border-top: 1px solid var(--border); }
@media (max-width: 600px) {
  .sheet-wrap { align-items: flex-end; padding: 0; }
  .sheet { border-radius: 18px 18px 0 0; max-height: 86dvh; padding-bottom: env(safe-area-inset-bottom); }
}
.crumbs { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted); padding: 4px 6px 8px; word-break: break-all; }
.list-btn { width: 100%; display: flex; align-items: center; gap: 10px; padding: 9px 10px; border: 0; background: transparent; border-radius: 9px; text-align: left; }
.list-btn:hover { background: var(--hover); }
.list-btn .grow { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-btn .muted { color: var(--muted); font-size: 12.5px; }
.list-btn.selected { background: var(--accent-soft); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 8px 14px; border-radius: 10px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text); font-weight: 550; font-size: 14px;
}
.btn:hover { background: var(--hover); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.danger { color: var(--danger); }
.btn.dark { background: var(--text); border-color: var(--text); color: var(--bg); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.sm { padding: 5px 10px; font-size: 13px; border-radius: 8px; }

/* ---------- header ---------- */
.topbar {
  display: flex; align-items: center; gap: 6px;
  padding: calc(8px + env(safe-area-inset-top)) 12px 8px;
  min-height: 52px;
}
.topbar .title { flex: 1; min-width: 0; }
.topbar .title b { display: block; font-weight: 600; font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar .title small { display: block; color: var(--muted); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.only-collapsed { display: none; }
.app.collapsed .only-collapsed { display: inline-grid; }
@media (max-width: 860px) { .only-collapsed { display: inline-grid; } }
.chip { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); white-space: nowrap; }
.chip.run { background: var(--accent-soft); color: var(--accent); }
.chip.wait { background: color-mix(in srgb, var(--warn) 16%, transparent); color: var(--warn); }

/* ---------- conversation ---------- */
.scroller { flex: 1; overflow-y: auto; overscroll-behavior: contain; scroll-behavior: auto; }
.thread { max-width: 760px; margin: 0 auto; padding: 8px 20px 24px; }
@media (max-width: 600px) { .thread { padding: 6px 16px 18px; } }

.banner {
  display: flex; gap: 10px; align-items: flex-start;
  margin: 8px 0 14px; padding: 11px 13px; border-radius: 12px;
  background: var(--surface-2); color: var(--text-2); font-size: 13.5px;
}
.banner svg { margin-top: 2px; color: var(--accent); }
.banner b { color: var(--text); }

.load-more { display: block; margin: 6px auto 16px; }

.msg-user { display: flex; justify-content: flex-end; margin: 18px 0 10px; }
.msg-user .bubble {
  max-width: min(85%, 620px);
  background: var(--bubble); border-radius: 18px 18px 6px 18px;
  padding: 10px 15px; white-space: pre-wrap; word-wrap: break-word; overflow-wrap: anywhere;
  font-size: 15px;
}
.msg-user .att { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--muted); margin-right: 8px; }

.msg-ai { margin: 6px 0 4px; }
.prose { font-family: var(--font-serif); font-size: 16.5px; line-height: 1.62; color: var(--text); overflow-wrap: anywhere; }
.prose > :first-child { margin-top: 0; }
.prose > :last-child { margin-bottom: 0; }
.prose p { margin: 0 0 .8em; }
.prose h1, .prose h2, .prose h3, .prose h4 { font-family: var(--font-serif); font-weight: 600; line-height: 1.3; margin: 1.2em 0 .5em; }
.prose h1 { font-size: 1.35em; } .prose h2 { font-size: 1.2em; } .prose h3 { font-size: 1.07em; } .prose h4 { font-size: 1em; }
.prose ul, .prose ol { margin: 0 0 .9em; padding-left: 1.4em; }
.prose li { margin: .25em 0; }
.prose li > p { margin: .2em 0; }
.prose a { color: var(--accent); text-underline-offset: 2px; }
.prose blockquote { margin: 0 0 .9em; padding-left: 14px; border-left: 3px solid var(--border-strong); color: var(--text-2); }
.prose code { font-family: var(--font-mono); font-size: .84em; background: var(--code-bg); border: 1px solid var(--border); border-radius: 5px; padding: .08em .35em; }
.prose pre { position: relative; margin: 0 0 1em; background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; overflow-x: auto; font-size: 13px; line-height: 1.5; }
.prose pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.prose table { border-collapse: collapse; margin: 0 0 1em; font-family: var(--font-ui); font-size: 14px; display: block; overflow-x: auto; max-width: 100%; }
.prose th, .prose td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; vertical-align: top; }
.prose th { background: var(--surface-2); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 1.4em 0; }
.prose img { max-width: 100%; }
.copy-code { position: absolute; top: 6px; right: 6px; font: 600 11.5px var(--font-ui); padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); opacity: 0; transition: opacity .15s; }
.prose pre:hover .copy-code, .copy-code:focus { opacity: 1; }
@media (hover: none) { .copy-code { opacity: 1; } }

.sys { text-align: center; color: var(--muted); font-size: 12.5px; margin: 14px 0; display: flex; align-items: center; gap: 10px; }
.sys::before, .sys::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.sys.cmd { font-family: var(--font-mono); }
.sys.err { color: var(--danger); }
.turn-foot { font-size: 12px; color: var(--muted); margin: 6px 0 18px; }
.err-box { margin: 8px 0 14px; padding: 10px 13px; border-radius: 10px; background: var(--danger-soft); color: var(--danger); font-size: 14px; white-space: pre-wrap; }

/* tool + thinking rows */
.steps { margin: 8px 0 12px; border-left: 2px solid var(--border); padding-left: 2px; }
.step { margin: 1px 0; }
.step > summary {
  list-style: none; display: flex; align-items: center; gap: 8px;
  padding: 5px 8px; border-radius: 8px; cursor: pointer; color: var(--text-2); font-size: 13.5px; min-width: 0;
}
.step > summary::-webkit-details-marker { display: none; }
.step > summary:hover { background: var(--hover); }
.step .tname { font-weight: 600; color: var(--text); flex: none; }
.step .targ { color: var(--muted); font-family: var(--font-mono); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.step .st { margin-left: auto; flex: none; display: inline-flex; }
.step .st.err { color: var(--danger); }
.step .st.ok { color: var(--ok); }
.step .chev { transition: transform .15s; color: var(--muted); width: 14px; height: 14px; flex: none; }
.step[open] > summary .chev { transform: rotate(90deg); }
.step .detail { margin: 4px 0 10px 30px; display: grid; gap: 8px; }
.detail .lbl { font-size: 11.5px; font-weight: 650; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 3px; }
.mono {
  font-family: var(--font-mono); font-size: 12.5px; line-height: 1.5;
  background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 10px; white-space: pre-wrap; word-break: break-word; max-height: 360px; overflow: auto; margin: 0;
}
.diff { font-family: var(--font-mono); font-size: 12.5px; line-height: 1.45; border: 1px solid var(--border); border-radius: 8px; overflow: auto; max-height: 360px; }
.diff div { padding: 0 10px; white-space: pre-wrap; word-break: break-word; }
.diff .a { background: var(--add); color: var(--add-text); }
.diff .d { background: var(--del); color: var(--del-text); }
.diff .f { color: var(--muted); padding: 4px 10px; border-bottom: 1px solid var(--border); background: var(--surface-2); }
.thinking-text { font-size: 13.5px; color: var(--text-2); white-space: pre-wrap; border-left: 2px solid var(--border); padding: 2px 0 2px 12px; max-height: 340px; overflow: auto; }
.todo { list-style: none; margin: 0; padding: 0; font-size: 13.5px; }
.todo li { display: flex; gap: 8px; padding: 2px 0; }
.todo .done { color: var(--muted); text-decoration: line-through; }
.todo .doing { font-weight: 600; }

.spin { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--border-strong); border-top-color: var(--accent); animation: spin .8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.working { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13.5px; margin: 10px 0 18px; }
.spark { width: 18px; height: 18px; color: var(--accent); animation: twinkle 2.2s ease-in-out infinite; }
@keyframes twinkle { 0%, 100% { transform: rotate(0) scale(1); opacity: 1; } 50% { transform: rotate(45deg) scale(.82); opacity: .7; } }
.cursor::after { content: ""; display: inline-block; width: .5em; height: 1em; background: var(--accent); vertical-align: -.12em; margin-left: 2px; border-radius: 2px; animation: pulse 1s steps(2) infinite; }

/* ---------- action cards (permissions, questions, plans) ---------- */
.cards { max-width: 760px; margin: 0 auto; padding: 0 20px; width: 100%; }
@media (max-width: 600px) { .cards { padding: 0 12px; } }
.card {
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px 16px; margin: 0 0 10px;
}
.card h3 { margin: 0 0 4px; font-size: 15px; font-weight: 650; display: flex; align-items: center; gap: 8px; }
.card h3 svg { color: var(--warn); }
.card .desc { color: var(--text-2); font-size: 13.5px; margin: 0 0 10px; }
.card .preview { margin: 0 0 12px; }
.card .actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.card .actions .spacer { flex: 1; }
.card textarea, .card input[type="text"] {
  width: 100%; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--bg);
  padding: 8px 10px; outline: none; resize: vertical; min-height: 40px;
}
.card textarea:focus, .card input[type="text"]:focus { border-color: var(--accent); }
.card .plan { max-height: 46dvh; overflow: auto; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin: 0 0 12px; background: var(--bg); }
.q { margin: 0 0 14px; }
.q .qh { display: inline-block; font-size: 11.5px; font-weight: 700; color: var(--accent); background: var(--accent-soft); border-radius: 999px; padding: 2px 9px; margin-bottom: 6px; }
.q .qt { font-weight: 600; margin: 0 0 8px; }
.opts { display: grid; gap: 6px; }
.opt { display: flex; gap: 10px; align-items: flex-start; text-align: left; padding: 9px 12px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); }
.opt:hover { border-color: var(--border-strong); }
.opt.on { border-color: var(--accent); background: var(--accent-soft); }
.opt .box { width: 18px; height: 18px; border-radius: 50%; border: 2px solid var(--border-strong); flex: none; margin-top: 2px; display: grid; place-items: center; }
.opt.multi .box { border-radius: 5px; }
.opt.on .box { border-color: var(--accent); background: var(--accent); }
.opt.on .box::after { content: ""; width: 6px; height: 6px; background: #fff; border-radius: 50%; }
.opt.multi.on .box::after { border-radius: 1px; }
.opt b { display: block; font-weight: 600; font-size: 14px; }
.opt small { display: block; color: var(--muted); font-size: 13px; }
.opt pre { margin: 6px 0 0; }

/* ---------- composer ---------- */
.composer-wrap { padding: 0 20px calc(14px + env(safe-area-inset-bottom)); }
@media (max-width: 600px) { .composer-wrap { padding: 0 10px calc(10px + env(safe-area-inset-bottom)); } }
.composer {
  max-width: 760px; margin: 0 auto;
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: 20px;
  box-shadow: var(--shadow); padding: 10px 10px 8px 14px;
  transition: border-color .15s;
}
.composer:focus-within { border-color: color-mix(in srgb, var(--accent) 55%, var(--border-strong)); }
.composer textarea {
  width: 100%; border: 0; outline: none; resize: none; background: transparent;
  font-size: 16px; line-height: 1.5; max-height: 40dvh; min-height: 26px; padding: 4px 2px; display: block;
}
.composer textarea::placeholder { color: var(--muted); }
.thumbs { display: flex; gap: 8px; flex-wrap: wrap; padding: 2px 0 8px; }
.thumb { position: relative; width: 58px; height: 58px; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb button { position: absolute; top: 2px; right: 2px; width: 20px; height: 20px; border-radius: 50%; border: 0; background: rgba(0, 0, 0, .6); color: #fff; display: grid; place-items: center; padding: 0; }
.thumb button svg { width: 12px; height: 12px; }
.tools { display: flex; align-items: center; gap: 6px; margin-top: 6px; }
.pills { flex: 1; min-width: 0; display: flex; align-items: center; gap: 2px; overflow-x: auto; scrollbar-width: none; -webkit-mask-image: linear-gradient(90deg, #000 88%, transparent); mask-image: linear-gradient(90deg, #000 88%, transparent); }
.pills::-webkit-scrollbar { display: none; }
.pill {
  display: inline-flex; align-items: center; gap: 6px; max-width: 100%;
  padding: 5px 10px; border-radius: 9px; border: 1px solid transparent; background: transparent;
  color: var(--text-2); font-size: 13px; font-weight: 550; white-space: nowrap;
}
.pill:hover { background: var(--hover); }
.pill svg { width: 15px; height: 15px; }
.pill .val { overflow: hidden; text-overflow: ellipsis; max-width: 150px; }
.pill.warn { color: var(--danger); }
.pill.plan { color: var(--accent); }
.send-btn {
  width: 36px; height: 36px; border-radius: 11px; border: 0;
  background: var(--accent); color: #fff; display: grid; place-items: center; flex: none;
}
.send-btn:hover { background: var(--accent-hover); }
.send-btn:disabled { background: var(--border-strong); color: var(--surface); cursor: default; }
.send-btn svg { width: 18px; height: 18px; stroke-width: 2.3; }
.send-btn.stop { background: var(--text); color: var(--bg); }
.send-btn.stop svg { fill: currentColor; stroke: none; width: 13px; height: 13px; }
.foot-note { max-width: 760px; margin: 6px auto 0; text-align: center; font-size: 11.5px; color: var(--muted); }

/* ---------- home ---------- */
.home { flex: 1; overflow-y: auto; display: flex; flex-direction: column; justify-content: center; padding: 20px 0 8vh; }
.home h1 { text-align: center; font: 500 clamp(28px, 4.4vw, 40px)/1.15 var(--font-serif); letter-spacing: -.015em; margin: 0 16px 26px; display: flex; align-items: center; justify-content: center; gap: 14px; }
.home h1 svg { width: 34px; height: 34px; color: var(--accent); stroke-width: 2; }
.home .composer-wrap { padding-bottom: 0; }
.where { max-width: 760px; margin: 12px auto 0; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; padding: 0 16px; }
.where .pill { border-color: var(--border); background: var(--surface); }
.recent { max-width: 760px; margin: 18px auto 0; padding: 0 16px; display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.recent button { border: 1px solid var(--border); background: transparent; border-radius: 999px; padding: 5px 12px; font-size: 13px; color: var(--text-2); }
.recent button:hover { background: var(--hover); }
.recent button.on { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

.toast {
  position: fixed; left: 50%; bottom: calc(96px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  z-index: 90; background: var(--text); color: var(--bg); border-radius: 12px; padding: 10px 14px; font-size: 14px;
  box-shadow: var(--shadow); display: flex; gap: 12px; align-items: center; max-width: calc(100vw - 32px);
}
.toast button { border: 0; background: transparent; color: var(--accent); font-weight: 700; padding: 0; }
.offline-bar { background: var(--warn); color: #fff; text-align: center; font-size: 13px; padding: 4px 8px; }

/* ---------- costs ---------- */
:root { --chart-mark: #c96442; --chart-mark-hot: #a9502f; --chart-grid: #ebe8df; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --chart-mark: #d7744f; --chart-mark-hot: #e48c6e; --chart-grid: #3a3a37; } }
:root[data-theme="dark"] { --chart-mark: #d7744f; --chart-mark-hot: #e48c6e; --chart-grid: #3a3a37; }

.nav-btn { display: flex; align-items: center; gap: 12px; margin: -4px 10px 8px; padding: 8px 12px 8px 15px; border: 0; border-radius: 10px; background: transparent; color: var(--text-2); font-weight: 550; width: calc(100% - 20px); text-align: left; }
.nav-btn:hover { background: var(--hover); color: var(--text); }
.nav-btn.active { background: var(--surface-2); color: var(--text); }

.costs { max-width: 960px; margin: 0 auto; padding: 6px 20px 40px; }
@media (max-width: 600px) { .costs { padding: 4px 14px 32px; } }
.tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 6px 0 18px; }
@media (max-width: 760px) { .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; } }
.tile, .stat { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px; min-width: 0; }
.tile.accent { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.tl { font-size: 12.5px; font-weight: 600; color: var(--muted); }
.tv { font-size: 30px; font-weight: 650; letter-spacing: -.02em; line-height: 1.15; margin-top: 4px; }
@media (max-width: 600px) { .tv { font-size: 24px; } }
.sv { font-size: 20px; font-weight: 650; letter-spacing: -.01em; margin-top: 3px; }
.tn { font-size: 12.5px; color: var(--muted); margin-top: 4px; line-height: 1.35; }

.filters { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin: 0 0 14px; }
.seg { display: inline-flex; background: var(--surface-2); border-radius: 11px; padding: 3px; gap: 2px; overflow-x: auto; max-width: 100%; scrollbar-width: none; }
.seg button { border: 0; background: transparent; border-radius: 8px; padding: 6px 11px; font-size: 13.5px; font-weight: 550; color: var(--text-2); white-space: nowrap; }
.seg button:hover { color: var(--text); }
.seg button.on { background: var(--surface); color: var(--text); box-shadow: 0 1px 2px rgba(0, 0, 0, .12); }
.switch { display: inline-flex; align-items: center; gap: 9px; font-size: 13.5px; color: var(--text-2); cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; pointer-events: none; }
.switch .track { width: 34px; height: 20px; border-radius: 999px; background: var(--border-strong); position: relative; transition: background .15s; flex: none; }
.switch .track::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: transform .15s; }
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(14px); }
.switch input:focus-visible + .track { outline: 2px solid var(--accent); outline-offset: 2px; }

.range-body { transition: opacity .15s; }
.range-body.loading { opacity: .55; pointer-events: none; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 0 0 14px; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; } }

.card-c { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px 16px; margin: 0 0 14px; min-width: 0; }
.card-h { display: flex; align-items: center; gap: 10px; margin: 0 0 10px; }
.card-h h3 { margin: 0; font-size: 15px; font-weight: 650; flex: 1; }
.card-h .muted { color: var(--muted); font-size: 13px; }
.chart { position: relative; width: 100%; overflow: hidden; }
.chart svg { display: block; width: 100%; height: auto; }
.chart .grid { stroke: var(--chart-grid); stroke-width: 1; }
.chart .axis { stroke: var(--border-strong); stroke-width: 1; }
.chart .tick { fill: var(--muted); font: 11px var(--font-ui); font-variant-numeric: tabular-nums; }
.chart .bar { fill: var(--chart-mark); transition: fill .1s; }
.chart .bar.hot { fill: var(--chart-mark-hot); }
.chart .hit { fill: transparent; cursor: default; outline: none; }
.chart .hit:focus-visible { fill: var(--hover); }
.tip { position: absolute; pointer-events: none; background: var(--text); color: var(--bg); border-radius: 9px; padding: 7px 10px; font-size: 12.5px; line-height: 1.35; white-space: nowrap; box-shadow: var(--shadow); display: grid; }
.tip b { font-size: 15px; font-weight: 700; }
.tip span { opacity: .78; }

.tbl-wrap { overflow-x: auto; max-height: 420px; overflow-y: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.tbl th, .tbl td { text-align: right; padding: 6px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.tbl th:first-child, .tbl td:first-child { text-align: left; }
.tbl th { color: var(--muted); font-weight: 600; font-size: 12.5px; position: sticky; top: 0; background: var(--surface); }

.brk { display: grid; gap: 4px; }
.brow { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 3px 12px; padding: 9px 0; border-bottom: 1px solid var(--border); }
.brow:last-child { border-bottom: 0; }
.bname { min-width: 0; display: flex; align-items: baseline; gap: 8px; }
.bname .n { font-weight: 600; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.bname .s, .bcost .s { color: var(--muted); font-size: 12.5px; font-weight: 500; white-space: nowrap; }
.bcost { font-weight: 650; font-variant-numeric: tabular-nums; text-align: right; display: flex; gap: 8px; align-items: baseline; justify-content: flex-end; }
.bbar { grid-column: 1 / -1; height: 6px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.bbar span { display: block; height: 100%; background: var(--chart-mark); border-radius: 999px; }
.bmeta { grid-column: 1 / -1; color: var(--muted); font-size: 12.5px; font-variant-numeric: tabular-nums; }
.more-btn { margin-top: 10px; }
.fine { color: var(--muted); font-size: 12.5px; margin: 4px 2px 0; }
.empty-costs { text-align: center; max-width: 460px; margin: 12vh auto 0; color: var(--text-2); }
.empty-costs h2 { font: 500 26px/1.2 var(--font-serif); color: var(--text); margin: 0 0 10px; }
.empty-costs p { margin: 0 0 12px; }

/* ---------- background agents ---------- */
.agents { margin: 10px 0 16px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); padding: 8px 6px 6px; }
.agents-h { display: flex; align-items: center; gap: 8px; padding: 2px 8px 6px; font-size: 13.5px; }
.agents-h svg { color: var(--accent); }
.agents-h span { color: var(--muted); margin-left: auto; font-size: 12.5px; }
.agent { display: flex; align-items: flex-start; gap: 10px; padding: 7px 8px; border-radius: 8px; }
.agent + .agent { border-top: 1px solid var(--border); border-radius: 0; }
.ast { width: 18px; display: inline-grid; place-items: center; margin-top: 2px; color: var(--ok); flex: none; }
.abody { flex: 1; min-width: 0; }
.atitle { font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.agent:not(.on) .atitle { color: var(--text-2); font-weight: 550; }
.astep { font-size: 12.5px; color: var(--muted); font-family: var(--font-mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.astep b { font-family: var(--font-ui); color: var(--text-2); font-weight: 600; }
.aago { font-size: 12px; color: var(--muted); flex: none; margin-top: 2px; }