:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #262b36;
  --text: #e6e8ee;
  --muted: #8b93a7;
  --accent: #4f8cff;
  --user: #243b6b;
  --bot: #1e222c;
  --danger: #e5484d;
  --ok: #3ccb7f;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  display: flex; flex-direction: column;
  font: 15px/1.45 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg); color: var(--text);
}
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--panel);
}
h1 { font-size: 16px; margin: 0; font-weight: 600; }
.status { font-size: 13px; color: var(--muted); }
.status.ok { color: var(--ok); }
.status.err { color: var(--danger); }
.header-right { display: flex; align-items: center; gap: 14px; }
.user { font-size: 13px; color: var(--muted); }
.user strong { color: var(--text); font-weight: 500; }
.linkbtn {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 6px; cursor: pointer; font-size: 13px;
}
.linkbtn:hover { color: var(--text); border-color: var(--muted); }

/* ---- login page ---- */
body.login-page { align-items: center; justify-content: center; }
.login-card {
  width: min(360px, calc(100% - 32px)); padding: 28px 28px 24px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
}
.login-card h1 { font-size: 20px; margin-bottom: 4px; }
.login-sub { margin: 0 0 20px; color: var(--muted); font-size: 14px; }
.login-card form { display: flex; flex-direction: column; gap: 14px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
.login-card input {
  padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font: inherit;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button[type="submit"] {
  padding: 11px; border-radius: 8px; border: 0; background: var(--accent); color: white;
  font: inherit; font-weight: 600; cursor: pointer; margin-top: 4px;
}
.login-card button:disabled { opacity: .6; cursor: wait; }
.login-error {
  color: var(--danger); font-size: 13px; padding: 8px 12px;
  border: 1px solid rgba(229, 72, 77, .4); border-radius: 8px; background: rgba(229, 72, 77, .08);
}

.chat {
  flex: 1; overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
  max-width: 820px; width: 100%; margin: 0 auto;
}
.msg {
  max-width: 78%; padding: 10px 14px; border-radius: 14px; white-space: pre-wrap; word-wrap: break-word;
}
.msg.user { align-self: flex-end; background: var(--user); border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: var(--bot); border-bottom-left-radius: 4px; }
.msg.bot.pending::after { content: "▍"; animation: blink 1s steps(1) infinite; color: var(--muted); }
.msg.sys { align-self: center; color: var(--muted); font-size: 13px; background: transparent; }
.msg.tool {
  align-self: flex-start; font-size: 13px; color: var(--muted);
  background: transparent; border: 1px dashed var(--border); padding: 6px 12px;
}
.msg.tool::before { content: "⚙ "; }
.msg.tool.running { border-color: var(--accent); color: var(--text); animation: pulse 1.2s ease-in-out infinite; }
.msg.tool.failed { border-color: var(--danger); }
@keyframes pulse { 50% { opacity: .55; } }
@keyframes blink { 50% { opacity: 0; } }

footer {
  border-top: 1px solid var(--border); background: var(--panel);
  padding: 14px 20px; display: flex; flex-direction: column; gap: 12px;
  max-width: 820px; width: 100%; margin: 0 auto;
}
.controls { display: flex; align-items: center; gap: 14px; }
.mic {
  width: 64px; height: 64px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--accent); color: white; display: grid; place-items: center;
  transition: transform .1s, background .2s, box-shadow .2s; flex-shrink: 0;
}
.mic:disabled { background: #3a3f4d; cursor: not-allowed; }
.mic:hover:not(:disabled) { transform: scale(1.04); }
.mic.recording {
  background: var(--danger);
  box-shadow: 0 0 0 calc(6px + var(--level, 0) * 30px) rgba(229, 72, 77, .25);
}
.mic.busy { background: #6b7280; }
.mic.live:not(.recording) {
  background: var(--ok);
  box-shadow: 0 0 0 calc(4px + var(--level, 0) * 24px) rgba(60, 203, 127, .2);
}
.mic-meta { flex: 1; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.hint { color: var(--muted); font-size: 13px; }
kbd { background: #2a2f3b; padding: 1px 6px; border-radius: 4px; font-size: 12px; }
.convo {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 999px; cursor: pointer; font-size: 13px;
}
.convo:hover:not(:disabled) { color: var(--text); border-color: var(--muted); }
.convo:disabled { opacity: .5; cursor: not-allowed; }
.convo.active { background: var(--ok); border-color: var(--ok); color: #06261a; font-weight: 600; }
button.secondary {
  background: transparent; color: var(--muted); border: 1px solid var(--border);
  padding: 8px 12px; border-radius: 8px; cursor: pointer;
}
button.secondary:hover { color: var(--text); border-color: var(--muted); }
.textform { display: flex; gap: 8px; }
.textform input {
  flex: 1; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg); color: var(--text); font: inherit;
}
.textform button {
  padding: 10px 16px; border-radius: 8px; border: 0; background: var(--accent); color: white; cursor: pointer;
}
.msg.notify { color: var(--text); background: #2a2417; border: 1px solid #5c4a1a; }
.msg.sys a { color: var(--accent); }