:root {
  --bg: #1a1712;
  --panel: #211d17;
  --panel2: #2a251d;
  --border: #38322820;
  --border2: #4a4234;
  --text: #ece5d8;
  --muted: #a89e8c;
  --accent: #d97757;
  --accent2: #c96442;
  --green: #7ba37b;
  --red: #d98a72;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}
.hidden { display: none !important; }

/* ── Login ── */
#login {
  min-height: 100%;
  display: flex; align-items: center; justify-content: center; padding: 24px;
}
#login .card {
  background: var(--panel); border: 1px solid var(--border2); border-radius: 12px;
  padding: 28px; width: 100%; max-width: 360px;
}
#login h1 { font-size: 18px; margin: 0 0 4px; }
#login p { color: var(--muted); font-size: 13px; margin: 0 0 18px; }
#login input {
  width: 100%; padding: 11px 12px; border-radius: 8px; border: 1px solid var(--border2);
  background: var(--bg); color: var(--text); font-size: 15px; margin-bottom: 12px;
}
#login button, .btn {
  width: 100%; padding: 11px; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: #1a120e; font-weight: 600; font-size: 15px;
}
#login button:hover, .btn:hover { background: var(--accent2); }
#loginErr { color: var(--red); font-size: 13px; min-height: 18px; }

/* ── App ── */
#app { display: flex; flex-direction: column; height: 100%; }
header {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-bottom: 1px solid var(--border2); background: var(--panel);
}
header .title { font-weight: 600; font-size: 14px; }
header .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
header .dot.run { background: var(--green); box-shadow: 0 0 8px var(--green); }
header .spacer { flex: 1; }
header button {
  background: var(--panel2); color: var(--text); border: 1px solid var(--border2);
  border-radius: 7px; padding: 6px 10px; font-size: 13px; cursor: pointer;
}
header button:hover { background: var(--border2); }

#transcript { flex: 1; overflow-y: auto; padding: 16px; }
.wrap { max-width: 860px; margin: 0 auto; }

.msg { margin: 14px 0; }
.msg .role { font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.msg.user .bubble {
  background: var(--panel2); border: 1px solid var(--border2); border-radius: 10px;
  padding: 10px 13px; white-space: pre-wrap; word-break: break-word;
}
.msg.assistant .bubble { padding: 2px 0; }
.bubble { word-break: break-word; }
.bubble p { margin: 0 0 10px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble code.inline { background: #00000040; border: 1px solid var(--border2); border-radius: 4px; padding: 1px 5px; font-family: var(--mono); font-size: 13px; }
.bubble pre {
  background: #14110d; border: 1px solid var(--border2); border-radius: 8px;
  padding: 11px 13px; overflow-x: auto; font-family: var(--mono); font-size: 13px; margin: 8px 0;
}

.tool {
  border: 1px solid var(--border2); border-radius: 9px; margin: 8px 0; overflow: hidden;
  background: var(--panel);
}
.tool .head { display: flex; align-items: center; gap: 8px; padding: 8px 11px; font-size: 13px; }
.tool .head .name { font-family: var(--mono); color: var(--accent); font-weight: 600; }
.tool .head .kind { color: var(--muted); font-size: 12px; }
.tool pre { margin: 0; border: 0; border-top: 1px solid var(--border2); border-radius: 0; background: #14110d; max-height: 320px; }
.tool .result pre { color: var(--text); }
.tool.err .head .name { color: var(--red); }

.notice { color: var(--muted); font-size: 12.5px; margin: 10px 0; font-style: italic; }
.cost { color: var(--muted); font-size: 11.5px; margin-top: 6px; }

/* ── Composer ── */
#composer {
  border-top: 1px solid var(--border2); background: var(--panel); padding: 10px 14px;
}
#composer .row { max-width: 860px; margin: 0 auto; display: flex; gap: 8px; align-items: flex-end; }
#composer textarea {
  flex: 1; resize: none; max-height: 200px; min-height: 44px; padding: 11px 12px;
  border-radius: 10px; border: 1px solid var(--border2); background: var(--bg); color: var(--text);
  font: inherit; line-height: 1.45;
}
#composer .send {
  background: var(--accent); color: #1a120e; border: 0; border-radius: 10px; width: 46px; height: 44px;
  font-size: 18px; cursor: pointer; flex-shrink: 0;
}
#composer .send:disabled { opacity: .4; cursor: default; }
#composer .send.stop { background: var(--red); }
.hint { max-width: 860px; margin: 6px auto 0; color: var(--muted); font-size: 11px; }