/* The chat playground look (router plan K5): the K1 console palette,
   light + dark via prefers-color-scheme, self-contained - system fonts
   only, no external asset ever. */
:root {
  --bg: #f6f6fa;
  --card: #ffffff;
  --line: #e3e3ee;
  --fg: #1d1d2b;
  --dim: #6c6c81;
  --acc: #4f46e5;
  --acc-soft: #eef0fe;
  --bad: #b42318;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1017;
    --card: #161923;
    --line: #272b3a;
    --fg: #e7e9f2;
    --dim: #8b90a5;
    --acc: #a5b0fc;
    --acc-soft: #222741;
    --bad: #f97066;
  }
}
* { box-sizing: border-box; margin: 0 }
body {
  background: var(--bg); color: var(--fg); min-height: 100vh;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px }
a { color: var(--acc); text-decoration: none }
.muted { color: var(--dim) }
.hidden { display: none !important }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; border-bottom: 1px solid var(--line); background: var(--card);
}
.brand { font-size: 17px; font-weight: 650; letter-spacing: .01em }
.brand a { color: var(--fg) }
.brand span { color: var(--acc); font-weight: 500 }
.meta { display: flex; align-items: center; gap: 12px; font-size: 13px }

.btn {
  display: inline-block; font: inherit; font-size: 13px; color: var(--fg); background: transparent;
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 14px; cursor: pointer;
}
.btn:hover { border-color: var(--acc); color: var(--acc) }
.btn.primary { background: var(--acc); border-color: var(--acc); color: #fff }
.btn.primary:hover { filter: brightness(1.08); color: #fff }
.btn:disabled { opacity: .5; cursor: default }

.chatframe {
  max-width: 760px; margin: 0 auto; padding: 22px 20px 40px;
  display: flex; flex-direction: column; min-height: calc(100vh - 61px);
}
.pickrow { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap }
/* A5: the resolved-route badge - where the selected id routes for this account */
.routebadge {
  font-size: 12px; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); color: var(--dim);
  white-space: nowrap;
}
.routebadge.warn { color: var(--bad); border-color: var(--bad) }
.pickrow label { font-size: 13px }
.pickrow select {
  font: inherit; font-size: 13px; color: var(--fg); background: var(--card);
  border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; max-width: 340px;
}
#modelinfo { font-size: 12px }

.notice {
  background: var(--card); border: 1px dashed var(--line); border-radius: 10px;
  padding: 20px 22px; margin-bottom: 14px;
}
.notice h2 { font-size: 15px; margin-bottom: 6px }
.notice p { color: var(--dim); font-size: 13px; margin-bottom: 10px }
.notice .row { display: flex; gap: 10px; flex-wrap: wrap }

.log { flex: 1; display: flex; flex-direction: column; gap: 10px; padding: 4px 0 14px }
.msg { max-width: 85%; border-radius: 10px; padding: 10px 14px; white-space: pre-wrap; word-break: break-word }
.msg.user { align-self: flex-end; background: var(--acc-soft) }
.msg.assistant { align-self: flex-start; background: var(--card); border: 1px solid var(--line) }
.msg .tag { display: block; font-size: 11px; color: var(--dim); margin-bottom: 2px }

.composer { display: flex; gap: 10px; align-items: flex-end }
.composer textarea {
  flex: 1; resize: vertical; min-height: 44px; font: inherit; font-size: 14px;
  color: var(--fg); background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
}
.composer textarea:focus { outline: none; border-color: var(--acc) }
.err { color: var(--bad); font-size: 13px; min-height: 18px; margin-top: 8px }
.fine { font-size: 12px; margin-top: 10px }