:root {
  --bg: var(--tg-theme-bg-color, #f2f3f5);
  --fg: var(--tg-theme-text-color, #16181c);
  --hint: var(--tg-theme-hint-color, #858a93);
  --link: var(--tg-theme-link-color, #2481cc);
  --btn: var(--tg-theme-button-color, #2481cc);
  --btn-fg: var(--tg-theme-button-text-color, #fff);
  --card: var(--tg-theme-secondary-bg-color, #fff);
  --border: color-mix(in srgb, var(--hint) 28%, transparent);
  --soft: color-mix(in srgb, var(--btn) 10%, var(--card));
  --ok: #2e9e5b; --warn: #d38b12; --bad: #d94c4c;
  --r: 14px;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 15px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); }
a { color: var(--link); text-decoration: none; }
button, textarea, input, select { font: inherit; color: inherit; }
button { cursor: pointer; border: 0; border-radius: 10px; padding: .5rem .8rem; background: var(--soft); color: var(--link); font-weight: 550; }
button.primary { background: var(--btn); color: var(--btn-fg); }
button.danger { background: color-mix(in srgb, var(--bad) 12%, var(--card)); color: var(--bad); }
button.ghost { background: transparent; }
button.icon { background: transparent; font-size: 1.3rem; padding: .2rem .5rem; color: var(--link); }
button:disabled { opacity: .5; cursor: default; }
.hidden { display: none !important; }

#shell { display: grid; grid-template-columns: 220px 1fr; height: 100dvh; }
#nav { display: flex; flex-direction: column; gap: 2px; padding: .8rem .6rem; background: var(--card); border-right: 1px solid var(--border); }
#nav .brand { font-weight: 800; font-size: 1.15rem; padding: .3rem .6rem .8rem; letter-spacing: -.01em; }
#nav a { display: flex; align-items: center; gap: .6rem; padding: .55rem .7rem; border-radius: 10px; color: var(--fg); position: relative; }
#nav a.active { background: var(--soft); color: var(--link); font-weight: 650; }
#nav .nav-cli { margin-top: auto; color: var(--hint); }
.badge:empty { display: none; }
.badge { margin-left: auto; min-width: 1.3rem; padding: 0 .35rem; border-radius: 99px; background: var(--bad); color: #fff; font-size: .72rem; line-height: 1.3rem; text-align: center; }

#main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
#top { display: flex; align-items: center; gap: .4rem; padding: .55rem .8rem; border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--card) 92%, transparent); backdrop-filter: blur(8px); }
#title { flex: 1; margin: 0; font-size: 1.05rem; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pill { padding: .3rem .65rem; border-radius: 99px; background: var(--soft); font-size: .85rem; font-weight: 600; }
#view { flex: 1; overflow: auto; padding: .8rem; display: flex; flex-direction: column; gap: .8rem; min-height: 0; }
#view > * { flex-shrink: 0; }
#view.chat-mode { padding: 0; gap: 0; }
#view.chat-mode > * { flex-shrink: 1; }

.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: .8rem .9rem; }
.card h3 { margin: 0 0 .5rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .05em; color: var(--hint); display: flex; align-items: center; gap: .4rem; }
.card h3 .more { margin-left: auto; text-transform: none; letter-spacing: 0; font-weight: 500; }
.row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.muted { color: var(--hint); font-size: .85rem; }
.small { font-size: .8rem; }
.grow { flex: 1; min-width: 0; }
.ellipsis { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chip { display: inline-flex; align-items: center; gap: .25rem; padding: .1rem .5rem; border-radius: 99px; font-size: .75rem; background: var(--soft); color: var(--link); white-space: nowrap; }
.chip.now { background: color-mix(in srgb, var(--bad) 14%, var(--card)); color: var(--bad); }
.chip.today { background: color-mix(in srgb, var(--warn) 16%, var(--card)); color: var(--warn); }
.chip.ok { background: color-mix(in srgb, var(--ok) 14%, var(--card)); color: var(--ok); }
.chip.grey { background: color-mix(in srgb, var(--hint) 14%, var(--card)); color: var(--hint); }
.list { display: flex; flex-direction: column; }
.item { display: block; padding: .6rem 0; border-top: 1px solid var(--border); color: inherit; }
.item:first-child { border-top: 0; padding-top: .1rem; }
.item .t { font-weight: 600; }
.item .row > .t.grow { min-width: 45%; }
.item .s { color: var(--hint); font-size: .85rem; margin-top: .15rem; }
.seg { display: flex; gap: .3rem; overflow-x: auto; padding-bottom: .1rem; }
.seg button { background: transparent; color: var(--hint); padding: .35rem .75rem; border-radius: 99px; white-space: nowrap; }
.seg button.on { background: var(--btn); color: var(--btn-fg); }
.ask { display: flex; gap: .5rem; }
.ask input { flex: 1; min-width: 0; padding: .6rem .8rem; border-radius: 12px; border: 1px solid var(--border); background: var(--bg); outline: none; }
textarea.edit { width: 100%; min-height: 7rem; resize: vertical; padding: .6rem .7rem; border-radius: 10px; border: 1px solid var(--border); background: var(--bg); line-height: 1.45; outline: none; }
input.edit-line, select.edit-line { flex: 1; min-width: 0; padding: .45rem .6rem; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: inherit; outline: none; }
textarea.edit:focus, input.edit-line:focus, .ask input:focus { border-color: color-mix(in srgb, var(--btn) 60%, var(--border)); }
details summary { cursor: pointer; color: var(--hint); font-size: .85rem; }
pre, code { font-family: "JetBrains Mono", ui-monospace, Menlo, monospace; font-size: .82rem; }
pre { background: var(--bg); padding: .6rem .7rem; border-radius: 8px; overflow: auto; white-space: pre-wrap; word-break: break-word; }
.md p { margin: .3rem 0; }
.md ul { margin: .3rem 0; padding-left: 1.2rem; }
.md h1, .md h2, .md h3, .md h4 { margin: .6rem 0 .3rem; font-size: 1rem; }
.md code { background: var(--bg); padding: 0 .25rem; border-radius: 4px; }
.md table { border-collapse: collapse; font-size: .85rem; }
.md td, .md th { border: 1px solid var(--border); padding: .2rem .4rem; }
.msg { padding: .45rem 0; border-top: 1px dashed var(--border); }
.msg:first-child { border-top: 0; }
.msg .who { font-weight: 600; font-size: .85rem; }
.msg .body { white-space: pre-wrap; word-break: break-word; margin-top: .1rem; }
.draft-text { white-space: pre-wrap; background: var(--bg); border-radius: 10px; padding: .6rem .7rem; }
.tl { font-size: .85rem; padding: .35rem 0; border-top: 1px solid var(--border); }
.tl:first-child { border-top: 0; }
.empty { text-align: center; color: var(--hint); padding: 1.5rem .5rem; }

/* chat */
.chat { display: flex; flex-direction: column; height: 100%; }
.chat-head { display: flex; align-items: center; gap: .5rem; padding: .45rem .8rem; border-bottom: 1px solid var(--border); font-size: .85rem; }
.chat-msgs { flex: 1; overflow: auto; padding: .8rem; display: flex; flex-direction: column; gap: .6rem; min-height: 0; }
.bubble { max-width: min(760px, 94%); padding: .6rem .8rem; border-radius: var(--r); border: 1px solid var(--border); line-height: 1.45; word-break: break-word; }
.bubble.user { align-self: flex-end; background: color-mix(in srgb, var(--btn) 16%, var(--card)); white-space: pre-wrap; }
.bubble.assistant { align-self: flex-start; background: var(--card); }
.bubble.error { border-color: var(--bad); }
.bubble.user.long { max-height: 9rem; overflow: hidden; position: relative; cursor: pointer; }
.bubble.user.long::after { content: "…"; position: absolute; right: .6rem; bottom: .2rem; }
.tool-line { align-self: flex-start; font-size: .75rem; color: var(--hint); }
.route { margin-top: .5rem; display: flex; flex-direction: column; gap: .4rem; }
.route select.edit-line, .route input.edit-line { width: 100%; box-sizing: border-box; }
.composer { display: grid; grid-template-columns: 1fr auto; gap: .5rem; padding: .6rem .8rem calc(.6rem + env(safe-area-inset-bottom)); border-top: 1px solid var(--border); background: var(--card); }
.composer textarea { resize: none; max-height: 150px; min-height: 42px; padding: .6rem .75rem; border-radius: 12px; border: 1px solid var(--border); background: var(--bg); outline: none; }
.composer-busy { display: flex; flex-direction: column; gap: .4rem; padding: .55rem .8rem; border-top: 1px solid var(--border); background: color-mix(in srgb, var(--card) 85%, var(--warn, #c90) 15%); }
.composer-busy .row { flex-wrap: wrap; gap: .4rem; }
.tool-live { display: flex; flex-direction: column; gap: .15rem; padding: .2rem .8rem .4rem; }
.tool-log { margin: .35rem .8rem .6rem; padding: .35rem .55rem; border: 1px solid var(--border); border-radius: 8px; font-size: .78rem; color: var(--hint); }
.tool-log summary { cursor: pointer; }

#toast { position: fixed; left: 50%; bottom: calc(5rem + env(safe-area-inset-bottom)); transform: translateX(-50%); background: color-mix(in srgb, var(--fg) 88%, transparent); color: var(--bg); padding: .5rem .9rem; border-radius: 10px; font-size: .9rem; z-index: 50; max-width: 90vw; }

@media (max-width: 820px) {
  #shell { grid-template-columns: 1fr; grid-template-rows: 1fr auto; }
  #nav { order: 2; flex-direction: row; justify-content: space-around; padding: .25rem .2rem calc(.25rem + env(safe-area-inset-bottom)); border-right: 0; border-top: 1px solid var(--border); }
  #nav .brand, #nav .nav-cli { display: none; }
  #nav a { flex-direction: column; gap: 0; font-size: 1.15rem; padding: .3rem .5rem; }
  #nav a span { font-size: .66rem; }
  #nav a.active { background: transparent; }
  .badge { position: absolute; top: 0; right: .1rem; margin: 0; }
}
@media (min-width: 821px) { #btn-cli { display: none; } }

.chip.pulse { animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .55; } }