:root {
  --navy: #14213D;
  --amber: #E0A93B;
  --bg: #f6f7f9;
  --card: #fff;
  --ink: #16181d;
  --line: #d9dde3;
  --muted: #555b66;
  --ai: #eef1f6;
  --me: #14213D;
  --me-ink: #fff;
  --danger: #b42318;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1420;
    --card: #171d2b;
    --ink: #e8eaef;
    --line: #2c3446;
    --muted: #a3aab8;
    --ai: #212a3c;
    --me: #E0A93B;
    --me-ink: #14213D;
    --danger: #ff8a7a;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1420; --card: #171d2b; --ink: #e8eaef; --line: #2c3446; --muted: #a3aab8;
  --ai: #212a3c; --me: #E0A93B; --me-ink: #14213D; --danger: #ff8a7a;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.55 "Source Sans 3", system-ui, sans-serif;
}
h1, h2 { font-family: "Source Serif 4", Georgia, serif; line-height: 1.2; margin: 0; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.35rem; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.top { background: var(--navy); color: #fff; border-bottom: 4px solid var(--amber); }
.top-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 18px; padding-bottom: 18px; }
.eyebrow { font-size: .85rem; letter-spacing: .04em; opacity: .8; }
.badge { background: var(--amber); color: var(--navy); font-weight: 700; font-size: .8rem; padding: 4px 10px; border-radius: 999px; letter-spacing: .08em; }

.layout { display: grid; grid-template-columns: 300px 1fr; gap: 24px; padding-top: 24px; padding-bottom: 48px; align-items: start; }
@media (max-width: 820px) { .layout { grid-template-columns: 1fr; } }

.menu { position: sticky; top: 16px; }
@media (max-width: 820px) { .menu { position: static; } }
.rules { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; }
.rules summary { cursor: pointer; font-weight: 600; }
.rules ol { padding-left: 20px; margin: 8px 0 0; font-size: .95rem; }
.rules li { margin-bottom: 6px; }

.group { margin-bottom: 14px; }
.group-title { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); font-weight: 700; margin: 0 0 6px 2px; }
.item {
  display: block; width: 100%; text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; margin-bottom: 6px;
}
.item:hover { border-color: var(--amber); }
.item[aria-current="true"] { border-color: var(--navy); box-shadow: inset 4px 0 0 var(--amber); }
.item small { display: block; color: var(--muted); font-size: .85rem; margin-top: 2px; }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 22px; min-height: 420px; min-width: 0; }
@media (max-width: 520px) { .panel { padding: 16px; } }
.empty p, .hint { color: var(--muted); }
.cat { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--amber); font-weight: 700; }
.setup-head, .chat-head { display: flex; justify-content: space-between; align-items: start; gap: 12px; margin-bottom: 14px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-weight: 600; margin-bottom: 4px; }
input, textarea, select {
  width: 100%; font: inherit; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px;
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--amber); outline-offset: 1px; }
textarea { resize: vertical; }
.note { color: var(--muted); font-size: .9rem; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }

.btn { font: inherit; font-weight: 600; border-radius: 8px; padding: 9px 18px; cursor: pointer; border: 1px solid transparent; }
.btn.primary { background: var(--navy); color: #fff; }
.btn.primary:hover { filter: brightness(1.2); }
.btn.ghost { background: transparent; border-color: var(--line); color: var(--ink); white-space: nowrap; }
.btn:disabled { opacity: .55; cursor: wait; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn.primary { background: var(--amber); color: var(--navy); } }
:root[data-theme="dark"] .btn.primary { background: var(--amber); color: var(--navy); }

.prompt-view { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.prompt-view summary { cursor: pointer; color: var(--muted); }
pre { white-space: pre-wrap; word-wrap: break-word; font: .9rem/1.5 ui-monospace, Menlo, Consolas, monospace; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px; }

.log { display: flex; flex-direction: column; gap: 10px; max-height: 60vh; overflow-y: auto; padding: 4px 2px 10px; }
.msg { max-width: 88%; padding: 10px 14px; border-radius: 12px; overflow-wrap: anywhere; }
.msg p { margin: 0 0 8px; } .msg p:last-child { margin-bottom: 0; }
.msg ul, .msg ol { margin: 4px 0 8px; padding-left: 20px; }
.msg.ai { background: var(--ai); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg.me { background: var(--me); color: var(--me-ink); align-self: flex-end; border-bottom-right-radius: 4px; white-space: pre-wrap; }
.msg.err { background: transparent; color: var(--danger); border: 1px solid var(--danger); align-self: center; font-size: .95rem; }
.msg.typing { color: var(--muted); font-style: italic; }
.say { display: flex; gap: 10px; align-items: flex-end; margin-top: 10px; }
.say textarea { flex: 1; }

.gate { position: fixed; inset: 0; background: rgba(20, 33, 61, .85); display: grid; place-items: center; padding: 16px; z-index: 10; }
.gate-card { background: var(--card); color: var(--ink); border-radius: 12px; padding: 24px; width: 100%; max-width: 380px; display: grid; gap: 10px; }
.gate-card p { margin: 0; color: var(--muted); }
.error { color: var(--danger) !important; }
[hidden] { display: none !important; }