:root {
  --pine: #12302b;
  --pine-2: #1b4640;
  --pine-text: #b9d3cb;
  --canvas: #eef2ef;
  --surface: #ffffff;
  --line: #d7e0db;
  --ink: #17231f;
  --muted: #62756d;
  --accent: #1f7a5c;
  --accent-ink: #ffffff;
  --out: #d9eec3;
  --warn: #b4410c;
  --warn-bg: #fbe9df;
  --ok-bg: #dff1e8;
  --radius: 6px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --canvas: #0e1714;
    --surface: #16221e;
    --line: #29392f;
    --ink: #e6efe9;
    --muted: #8da197;
    --accent: #3fb68b;
    --accent-ink: #06150f;
    --out: #254a2f;
    --warn: #ff9a6b;
    --warn-bg: #3a2218;
    --ok-bg: #1d3a2e;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  font-family: "IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--canvas);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.45;
}
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }

/* ---------- login ---------- */
.login { min-height: 100%; display: grid; place-items: center; padding: 24px; background: var(--pine); }
.login form { width: min(360px, 100%); background: var(--surface); padding: 28px; border-radius: 10px; display: grid; gap: 14px; }
.login h1 { margin: 0; font-size: 22px; letter-spacing: -0.01em; }
.login p { margin: 0; color: var(--muted); }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: 220px 1fr; height: 100%; }
.side { background: var(--pine); color: var(--pine-text); display: flex; flex-direction: column; padding: 18px 12px; gap: 4px; }
.brand { color: #fff; font-weight: 600; font-size: 17px; padding: 4px 10px 18px; letter-spacing: -0.01em; }
.side a {
  display: flex; justify-content: space-between; align-items: center;
  color: inherit; text-decoration: none; padding: 9px 10px; border-radius: var(--radius);
}
.side a:hover { background: var(--pine-2); }
.side a.on { background: var(--pine-2); color: #fff; font-weight: 600; }
.badge { background: #f0b429; color: #2b2100; border-radius: 99px; font-size: 12px; font-weight: 600; padding: 0 7px; min-width: 20px; text-align: center; }
.side .spacer { flex: 1; }
.side button.link { background: none; border: 0; color: var(--pine-text); text-align: left; padding: 9px 10px; cursor: pointer; border-radius: var(--radius); }
.side button.link:hover { background: var(--pine-2); }
.live { font-size: 12px; padding: 0 10px 8px; display: flex; gap: 6px; align-items: center; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #e0a100; }
.dot.on { background: #4ade80; }

main { overflow: auto; min-width: 0; }
.page { padding: 28px 32px 48px; max-width: 980px; }
.page h2 { margin: 0 0 4px; font-size: 24px; letter-spacing: -0.015em; }
.page > p.sub { margin: 0 0 22px; color: var(--muted); max-width: 62ch; }

/* ---------- controls ---------- */
.btn {
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: var(--radius);
  padding: 8px 14px; font-weight: 600; cursor: pointer;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); font-weight: 500; }
.btn.danger { background: transparent; color: var(--warn); border: 1px solid var(--line); font-weight: 500; }
.btn.sm { padding: 4px 10px; font-size: 13px; }
input, select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
}
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.row { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; }
.row > * { flex: 1 1 160px; }
.row > .fit { flex: 0 0 auto; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 18px; margin-bottom: 18px; }
.panel h3 { margin: 0 0 12px; font-size: 16px; }
.err { background: var(--warn-bg); color: var(--warn); padding: 8px 12px; border-radius: var(--radius); margin: 8px 0; font-size: 14px; }
.okmsg { background: var(--ok-bg); padding: 8px 12px; border-radius: var(--radius); margin: 8px 0; font-size: 14px; }
.empty { color: var(--muted); padding: 22px 4px; }
code, .mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13px; }
code.block { display: block; padding: 10px 12px; background: var(--canvas); border: 1px solid var(--line); border-radius: var(--radius); overflow-x: auto; white-space: pre-wrap; word-break: break-all; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 18px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; }
.stat b { display: block; font-size: 24px; letter-spacing: -0.02em; }
.stat span { color: var(--muted); font-size: 13px; }

/* ---------- list rows ---------- */
.item { display: flex; gap: 12px; align-items: center; justify-content: space-between; padding: 12px 0; border-top: 1px solid var(--line); }
.item:first-child { border-top: 0; }
.item .grow { min-width: 0; flex: 1; }
.item .t { font-weight: 600; overflow-wrap: anywhere; }
.item .m { color: var(--muted); font-size: 13px; }
.tag { display: inline-block; background: var(--canvas); border: 1px solid var(--line); border-radius: 4px; padding: 0 6px; font-size: 12px; margin-right: 4px; }
.tag.bad { color: var(--warn); border-color: var(--warn); }
.tag.good { background: var(--ok-bg); }

/* ---------- inbox ---------- */
.inbox { display: grid; grid-template-columns: 300px 1fr; height: 100%; }
.convs { border-right: 1px solid var(--line); background: var(--surface); overflow: auto; }
.convs header { padding: 16px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--surface); }
.convs header h2 { margin: 0 0 8px; font-size: 20px; }
.conv { display: block; width: 100%; text-align: left; background: none; border: 0; border-bottom: 1px solid var(--line); padding: 12px 16px; cursor: pointer; }
.conv:hover { background: var(--canvas); }
.conv.on { background: var(--canvas); box-shadow: inset 3px 0 var(--accent); }
.conv .top { display: flex; justify-content: space-between; gap: 8px; }
.conv .name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conv .time { color: var(--muted); font-size: 12px; white-space: nowrap; }
.conv .prev { color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.chat { display: grid; grid-template-rows: auto 1fr auto; min-width: 0; height: 100%; }
.chat > header { padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--surface); display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.chat > header b { display: block; }
.window { font-size: 12px; padding: 2px 8px; border-radius: 99px; background: var(--ok-bg); }
.window.closed { background: var(--warn-bg); color: var(--warn); }
.thread { overflow: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 6px; }
.bub { max-width: min(520px, 80%); padding: 8px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px 12px 12px 2px; overflow-wrap: anywhere; white-space: pre-wrap; }
.bub.out { align-self: flex-end; background: var(--out); border-color: transparent; border-radius: 12px 12px 2px 12px; }
.bub .meta { display: block; font-size: 11px; color: var(--muted); margin-top: 3px; text-align: right; white-space: normal; }
.bub .meta.failed { color: var(--warn); }
.bub img { max-width: 100%; border-radius: 6px; display: block; margin-bottom: 4px; }
.composer { padding: 12px 16px; border-top: 1px solid var(--line); background: var(--surface); display: flex; gap: 8px; align-items: end; }
.composer textarea { resize: none; min-height: 40px; max-height: 140px; }
.nochat { display: grid; place-items: center; color: var(--muted); height: 100%; text-align: center; padding: 24px; }

dialog { border: 1px solid var(--line); border-radius: 10px; padding: 22px; width: min(440px, calc(100% - 32px)); background: var(--surface); color: var(--ink); }
dialog::backdrop { background: rgba(0,0,0,.45); }
dialog form { display: grid; gap: 12px; }
dialog h3 { margin: 0; }

.toolbar { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.chip { border: 1px solid var(--line); background: var(--surface); border-radius: 99px; padding: 3px 12px; cursor: pointer; font-size: 13px; }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
details.log { border-top: 1px solid var(--line); padding: 8px 0; }
details.log summary { cursor: pointer; display: flex; gap: 10px; align-items: baseline; }
details.log pre { margin: 8px 0 0; max-height: 280px; overflow: auto; background: var(--canvas); padding: 10px; border-radius: var(--radius); font-size: 12px; }

@media (max-width: 820px) {
  .shell { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .side { flex-direction: row; overflow-x: auto; padding: 8px; align-items: center; }
  .brand, .live { display: none; }
  .side .spacer { display: none; }
  .page { padding: 20px 16px 40px; }
  .inbox { grid-template-columns: 1fr; }
  .inbox.chatting .convs { display: none; }
  .inbox:not(.chatting) .chat { display: none; }
  .back { display: inline-block !important; }
}
.back { display: none; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }