:root {
  --bg: #f6f7f9; --card: #ffffff; --ink: #1c1f24; --muted: #5f6672; --line: #e1e4ea;
  --accent: #1f5fbf; --accent-ink: #ffffff; --ok: #1a7f4b; --bad: #b3261e; --code: #f0f2f5;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14161a; --card: #1d2026; --ink: #e8eaee; --muted: #9aa3b2; --line: #2d323b;
          --accent: #6ea0ff; --accent-ink: #0b1220; --ok: #4fc08d; --bad: #ff7b72; --code: #262a33; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; color: var(--ink); background: var(--bg); padding: 16px; }
h1 { font-size: 22px; margin: 0; } h2 { font-size: 16px; margin: 0 0 8px; }
.sub, .muted { color: var(--muted); } .small { font-size: 13px; }
.top { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; max-width: 1200px; margin: 0 auto 16px; }
.user-box { text-align: right; display: flex; gap: 8px; align-items: center; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.auth { max-width: 440px; margin: 40px auto; }
label { display: block; margin: 10px 0; font-weight: 600; }
input, textarea { width: 100%; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; margin-top: 4px; }
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 14px; resize: vertical; }
button { font: inherit; font-weight: 600; border-radius: 8px; padding: 8px 14px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); cursor: pointer; }
button.ghost { background: transparent; color: var(--accent); }
button:disabled { opacity: .5; cursor: default; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 10px; }
.msg { font-size: 14px; } .msg.ok { color: var(--ok); } .msg.bad { color: var(--bad); }
main { display: grid; grid-template-columns: 320px 1fr; gap: 16px; max-width: 1200px; margin: 0 auto; }
@media (max-width: 820px) { main { grid-template-columns: 1fr; } }
.tables { padding-left: 18px; margin: 0 0 16px; font-size: 13px; } .tables li { margin: 4px 0; }
.qlist { padding-left: 0; list-style: none; margin: 0; }
.qlist li { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; margin: 6px 0; cursor: pointer; display: flex; justify-content: space-between; gap: 8px; }
.qlist li.active { border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.qlist li .saved { color: var(--ok); font-size: 12px; }
.pill { display: inline-block; font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 999px; background: var(--code); color: var(--muted); }
#q-header { display: flex; align-items: center; gap: 10px; }
.prompt { font-size: 16px; margin: 6px 0 14px; }
.editor-label { margin-bottom: 0; }
.result { margin-top: 12px; overflow-x: auto; }
table.grid { border-collapse: collapse; font-size: 14px; min-width: 50%; }
table.grid th, table.grid td { border: 1px solid var(--line); padding: 5px 10px; text-align: left; white-space: nowrap; }
table.grid th { background: var(--code); font-weight: 600; }
table.grid td.num { text-align: right; font-variant-numeric: tabular-nums; }
.hint { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 10px; }
.hint summary { cursor: pointer; font-weight: 600; }
pre { background: var(--code); padding: 10px; border-radius: 8px; overflow-x: auto; font-size: 13px; }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; }
footer { max-width: 1200px; margin: 24px auto 0; }
a { color: var(--accent); }
.expected { margin: 0 0 14px; padding: 10px 12px; border: 1px dashed var(--line); border-radius: 8px; }
.expected-label { margin: 0 0 4px; }
.expected .result { margin-top: 4px; }
.hint h3 { font-size: 15px; margin: 0 0 4px; }
.assistant { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 12px; }
.assistant h3 { font-size: 15px; margin: 0 0 4px; }
#nl-question { flex: 1; min-width: 240px; }
.ctx table.grid td.text { white-space: normal; max-width: 640px; font-size: 13px; }