:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #f0f2f5;
  --border: #dde1e7;
  --text: #1c2129;
  --muted: #6b7482;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --user-bubble: #e7efff;
  --assistant-bubble: #ffffff;
  --ok: #1f9d55;
  --warn: #c98a00;
  --err: #d64545;
  --code-bg: #f3f4f6;
  --radius: 8px;
  --mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --panel: #1b1f26;
    --panel-2: #232831;
    --border: #313844;
    --text: #e4e8ee;
    --muted: #8d97a6;
    --accent: #5b8def;
    --user-bubble: #22324f;
    --assistant-bubble: #1f242c;
    --code-bg: #232831;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
h1 { font-size: 16px; margin: 0; }
h2 { font-size: 13px; margin: 0 0 8px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
a { color: var(--accent); }
code, .mono { font-family: var(--mono); font-size: 12px; }

label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
input[type=text], input[type=number], input[type=password], select, textarea {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); vertical-align: middle; }

button {
  font: inherit;
  padding: 7px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  white-space: nowrap;
}
button:hover:not(:disabled) { background: var(--panel-2); }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.primary:hover:not(:disabled) { filter: brightness(1.08); background: var(--accent); }
button.danger { color: var(--err); }
button.small { padding: 3px 8px; font-size: 12px; }
button.icon { padding: 7px 9px; }

.row { display: flex; gap: 6px; align-items: center; }
.row > .grow { flex: 1; min-width: 0; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.hidden { display: none !important; }

.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); margin-right: 6px; vertical-align: middle; }
.dot.ok { background: var(--ok); }
.dot.warn { background: var(--warn); }
.dot.err { background: var(--err); }

.badge { display: inline-block; padding: 1px 6px; border-radius: 10px; font-size: 11px; background: var(--panel-2); color: var(--muted); border: 1px solid var(--border); }
.badge.ok { color: var(--ok); }
.badge.err { color: var(--err); }

.warn-box {
  margin-top: 10px; padding: 8px 10px; border-radius: 6px; font-size: 12px;
  border: 1px solid var(--warn); color: var(--text); background: color-mix(in srgb, var(--warn) 12%, transparent);
}
.error-box { color: var(--err); font-size: 12px; margin-top: 6px; white-space: pre-wrap; word-break: break-word; }
.toast {
  position: fixed; bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 8px 14px; border-radius: 6px;
  font-size: 13px; z-index: 100; max-width: calc(100vw - 32px);
}
.toast.err { background: var(--err); color: #fff; }

/* ------------------------------------------------------------- chat page */
.app { display: grid; grid-template-columns: 320px 1fr; height: 100vh; }
.sidebar {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 14px 16px;
  overflow-y: auto;
}
.sidebar header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.sidebar section { padding: 12px 0; border-top: 1px solid var(--border); }
.sidebar section:first-of-type { border-top: 0; padding-top: 0; }
.server-status { font-size: 12px; color: var(--muted); margin-top: 6px; word-break: break-all; }
.coach-name { font-size: 12px; margin-top: 4px; color: var(--muted); }

.dialogs-list { list-style: none; margin: 0; padding: 0; max-height: 220px; overflow-y: auto; }
.dialogs-list li {
  padding: 6px 8px; border-radius: 6px; cursor: pointer; font-size: 12px;
  display: flex; justify-content: space-between; gap: 8px;
}
.dialogs-list li:hover { background: var(--panel-2); }
.dialogs-list li.active { background: var(--user-bubble); }

.main { display: flex; flex-direction: column; min-width: 0; height: 100vh; }
.chat-head {
  padding: 10px 18px; border-bottom: 1px solid var(--border); background: var(--panel);
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.chat-head .info { font-size: 12px; color: var(--muted); min-width: 0; }
.chat-head .info b { color: var(--text); font-weight: 600; }
.messages { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.empty { margin: auto; text-align: center; color: var(--muted); max-width: 420px; }

.msg { max-width: 820px; width: fit-content; min-width: 120px; }
.msg.user { align-self: flex-end; }
.msg.assistant { align-self: flex-start; }
.bubble {
  padding: 10px 13px; border-radius: 10px; border: 1px solid var(--border);
  white-space: pre-wrap; word-break: break-word;
}
.msg.user .bubble { background: var(--user-bubble); border-color: transparent; }
.msg.assistant .bubble { background: var(--assistant-bubble); }
.msg.error .bubble { border-color: var(--err); color: var(--err); }
.msg .meta { font-size: 11px; color: var(--muted); margin-top: 4px; display: flex; gap: 10px; flex-wrap: wrap; }
.msg.user .meta { justify-content: flex-end; }
.msg details { font-size: 12px; margin-top: 4px; }
.msg details summary { cursor: pointer; color: var(--muted); font-size: 11px; }
.msg details pre {
  background: var(--code-bg); padding: 8px; border-radius: 6px; overflow: auto; max-height: 360px;
  font-family: var(--mono); font-size: 11px; white-space: pre-wrap; word-break: break-word;
}
.cursor::after { content: "▍"; animation: blink 1s steps(2) infinite; color: var(--muted); }
@keyframes blink { 50% { opacity: 0; } }
.stage { font-size: 11px; color: var(--muted); margin-top: 4px; }

.composer { border-top: 1px solid var(--border); background: var(--panel); padding: 12px 18px; }
.composer textarea { min-height: 44px; max-height: 240px; }
.composer .hint { font-size: 11px; color: var(--muted); margin-top: 4px; }

/* ------------------------------------------------------------- settings page */
.page { max-width: 1280px; margin: 0 auto; padding: 16px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 14px; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: none; padding: 8px 14px; color: var(--muted); }
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 11px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; white-space: nowrap; }
tr.disabled td:not(:first-child) { opacity: .6; }
tr.missing td { text-decoration: line-through; }
td input[type=text], td input[type=number], td input[type=password] { padding: 5px 7px; }
td .alias { min-width: 150px; }
td .port { width: 80px; }
td .key { min-width: 140px; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0 14px; }
.config-editor textarea.prompt { min-height: 380px; font-family: var(--mono); font-size: 12px; }
.config-editor textarea.json { min-height: 160px; font-family: var(--mono); font-size: 12px; }
.check-row { display: flex; align-items: center; gap: 8px; margin-top: 30px; font-size: 13px; }
.check-row label { margin: 0; color: var(--text); font-size: 13px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; align-items: center; }

/* ------------------------------------------------------------- auto-run */
.sim-dialog {
  width: min(640px, calc(100vw - 32px)); padding: 18px 20px;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); color: var(--text);
}
.sim-dialog::backdrop { background: rgb(0 0 0 / .45); }
.sim-dialog textarea { margin-top: 6px; }
.run-bar {
  display: flex; align-items: center; gap: 8px; padding: 8px 18px; font-size: 13px;
  border-top: 1px solid var(--border); background: var(--user-bubble);
}
.run-bar #runStatus { flex: 1; }
.pulse { animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .3; } }

/* ------------------------------------------------------------- prompt viewer */
.prompt-dialog {
  width: min(1100px, calc(100vw - 32px)); height: min(88vh, 1000px); padding: 0;
  border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); color: var(--text);
}
.prompt-dialog[open] { display: flex; flex-direction: column; }
.prompt-dialog::backdrop { background: rgb(0 0 0 / .45); }
.pd-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; padding: 12px 16px; flex-wrap: wrap; }
.pd-tabs { margin: 0 16px; }
.pd-body { flex: 1; overflow: auto; padding: 12px 16px 16px; }
.pd-msg { border: 1px solid var(--border); border-radius: 6px; margin-bottom: 10px; }
.pd-msg > summary { cursor: pointer; padding: 6px 10px; font-size: 12px; background: var(--panel-2); border-radius: 6px; }
.pd-msg pre, .pd-raw {
  margin: 0; padding: 10px; font-family: var(--mono); font-size: 12px; white-space: pre-wrap; word-break: break-word;
}
.pd-role { display: inline-block; min-width: 64px; font-weight: 600; }
.pd-role.system { color: var(--warn); }
.pd-role.user { color: var(--accent); }
.pd-role.assistant { color: var(--ok); }
.prompt-btn { margin-left: 8px; }

/* ------------------------------------------------------------- login / user */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px; }
.login-card { width: 100%; max-width: 340px; padding: 24px; }
.user-bar { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 8px; }
.user-bar button { padding: 2px 8px; font-size: 12px; }

@media (max-width: 800px) {
  .app { grid-template-columns: 1fr; height: auto; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); }
  .main { height: 90vh; }
  .messages { padding: 12px; }
  .composer { padding: 10px 12px; }
  .page { padding: 12px 16px; }
}

.persona-row { border: 1px solid var(--border); border-radius: 6px; padding: 8px; margin-top: 8px; }
.persona-row textarea { margin-top: 6px; }