:root {
  --bg: #0f1115; --panel: #171a21; --panel2: #1e222b; --border: #2a2f3a; --text: #e6e8ee; --muted: #8a93a6;
  --accent: #5b8cff; --accent2: #3ddc97; --danger: #ff5c7a; --warn: #ffb347; --mine: #22304d; --theirs: #202531;
  --radius: 10px; --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; }
button, input, select, textarea { font: inherit; color: inherit; }
button { background: var(--panel2); border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; cursor: pointer; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.danger { color: var(--danger); }
button.icon { padding: 2px 6px; background: transparent; border-color: transparent; color: var(--muted); }
button.icon:hover { color: var(--text); border-color: var(--border); }
input, select, textarea { background: var(--panel2); border: 1px solid var(--border); border-radius: 6px; padding: 7px 9px; outline: none; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); }
.muted { color: var(--muted); }
.spacer { flex: 1; }
.pad { padding: 20px; }
.mt6 { margin-top: 6px; }
.mt10 { margin: 10px 0 4px; }
.row-inline { display: flex; gap: 6px; }
.mono { font-family: var(--mono); }

/* login */
.login { height: 100%; display: grid; place-items: center; }
.login form { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; width: 320px; display: flex; flex-direction: column; gap: 10px; }
.login h1 { margin: 0 0 8px; font-size: 20px; }
.error { color: var(--danger); font-size: 13px; }

/* layout */
.app { display: grid; grid-template-columns: 260px 1fr; height: 100%; }
.sidebar { background: var(--panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; min-width: 0; }
.sidebar header { padding: 12px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid var(--border); }
.sidebar header h1 { margin: 0; font-size: 16px; flex: 1; }
.chatlist { flex: 1; overflow-y: auto; }
.chatitem { padding: 10px 12px; cursor: pointer; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 2px; }
.chatitem:hover { background: var(--panel2); }
.chatitem.active { background: var(--mine); }
.chatitem .title { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chatitem .meta { font-size: 12px; color: var(--muted); }
.sidebar footer { padding: 10px 12px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.sidebar footer .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--danger); }
.sidebar footer .dot.on { background: var(--accent2); }

.main { display: flex; flex-direction: column; min-width: 0; height: 100%; }
.main header { padding: 10px 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; background: var(--panel); }
.main header .burger { display: none; }
.main header h2 { margin: 0; font-size: 16px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.messages { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }
.empty { margin: auto; color: var(--muted); text-align: center; }
.msg { max-width: min(80%, 900px); background: var(--theirs); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 10px; align-self: flex-start; position: relative; }
.msg.mine { background: var(--mine); align-self: flex-end; }
.msg.kind-command { border-left: 3px solid var(--warn); }
.msg.kind-command_result { border-left: 3px solid var(--accent2); }
.msg .head { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 4px; }
.msg .head .sender { font-weight: 600; color: var(--text); }
.msg .head .spacer { flex: 1; }
.msg .body { white-space: pre-wrap; word-break: break-word; font-family: var(--mono); font-size: 13px; line-height: 1.45; }
.msg .badges { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }
.badge { font-size: 11px; border: 1px solid var(--border); border-radius: 999px; padding: 1px 7px; color: var(--muted); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.badge.ok { color: var(--accent2); border-color: var(--accent2); }
.badge.danger { color: var(--danger); border-color: var(--danger); }
.msg .actions { display: none; gap: 2px; }
.msg:hover .actions { display: flex; }

.composer { border-top: 1px solid var(--border); background: var(--panel); padding: 10px 16px; display: flex; flex-direction: column; gap: 8px; }
.composer textarea { width: 100%; min-height: 64px; max-height: 300px; resize: vertical; font-family: var(--mono); font-size: 13px; }
.composer .row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.composer .row label { display: flex; gap: 5px; align-items: center; color: var(--muted); font-size: 12px; }
.composer .row .spacer { flex: 1; }

/* devices / tokens panel */
.drawer { position: fixed; top: 0; right: 0; height: 100%; width: min(520px, 100%); background: var(--panel); border-left: 1px solid var(--border); padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; z-index: 10; box-shadow: -8px 0 24px rgba(0,0,0,.4); }
.drawer h3 { margin: 8px 0 0; font-size: 14px; }
.drawer .close { align-self: flex-end; }
.device { display: flex; align-items: center; gap: 8px; padding: 8px; border: 1px solid var(--border); border-radius: 6px; }
.device .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.device .dot.on { background: var(--accent2); }
.device .name { font-weight: 600; }
.device .spacer { flex: 1; }
pre.install { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 10px; font-size: 12px; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }
.toast { position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%); background: var(--panel2); border: 1px solid var(--border); border-radius: 6px; padding: 8px 14px; z-index: 20; }
.tokenbox { display: flex; gap: 6px; align-items: center; }
.tokenbox input { flex: 1; font-family: var(--mono); font-size: 12px; }

@media (max-width: 720px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .main header .burger { display: inline-block; }
  .app.show-sidebar .sidebar { display: flex; position: fixed; inset: 0; z-index: 5; }
  .msg { max-width: 95%; }
}