/*
  모델: openai/gpt-oss-20b (화면 표시용, CSS 자체는 모델 사용 안 함)
  기술: CSS (라이트 테마, 반응형 레이아웃)
  라이브러리: 사용 안 함
*/
:root {
  --bg: #f5f7fa; --surface: #ffffff; --border: #e3e8ef; --text: #1f2933;
  --muted: #64748b; --primary: #2563eb; --primary-dark: #1d4ed8; --primary-soft: #eff4ff;
  --danger: #dc2626; --warn: #b45309; --ok: #15803d; --radius: 10px;
  --shadow: 0 1px 2px rgba(16,24,40,.05), 0 1px 3px rgba(16,24,40,.08);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.6 "Pretendard", "Malgun Gothic", "Apple SD Gothic Neo", system-ui, sans-serif; }
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); margin: 0; }
.sm-text { font-size: 13px; }
.spacer { flex: 1; }

.model-bar { background: #0f172a; color: #e2e8f0; font-size: 12.5px; padding: 6px 16px;
  display: flex; flex-wrap: wrap; gap: 4px 18px; }
.model-bar b { color: #93c5fd; font-weight: 600; margin-right: 4px; }
.model-bar code { background: rgba(255,255,255,.08); padding: 1px 6px; border-radius: 4px; color: #fff; }
.model-bar small { color: #94a3b8; }

.topbar { background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; gap: 10px; height: 54px; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 17px; }
.crumb { color: var(--muted); }
.badge { font-size: 12px; color: var(--ok); background: #f0fdf4; border: 1px solid #bbf7d0; padding: 2px 10px; border-radius: 999px; }
@media (max-width: 520px) { .badge { display: none; } }

.page-head { display: flex; align-items: flex-end; justify-content: space-between; padding: 22px 0 12px; }
h1 { font-size: 21px; margin: 0; }
h2 { font-size: 16px; margin: 0; }
h3 { font-size: 14px; margin: 0; }

.btn { border: 1px solid transparent; border-radius: 8px; padding: 9px 16px; font: inherit; font-weight: 600;
  cursor: pointer; text-decoration: none; display: inline-block; }
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn.ghost:hover { background: var(--bg); }
.btn.sm { padding: 4px 12px; font-size: 13px; }
.btn:disabled { opacity: .55; cursor: progress; }

/* KPI */
.kpis { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-bottom: 18px; }
@media (max-width: 1100px) { .kpis { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 680px) { .kpis { grid-template-columns: 1fr 1fr; } }
@media (max-width: 440px) { .kpis { grid-template-columns: 1fr; } }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px; min-height: 128px; display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.kpi .label { color: var(--muted); font-size: 13px; font-weight: 600; }
.kpi .value { font-size: 26px; font-weight: 700; line-height: 1.25; font-variant-numeric: tabular-nums; }
.kpi .value small { font-size: 14px; color: var(--muted); font-weight: 600; margin-left: 2px; }
.kpi .sub { color: var(--muted); font-size: 12.5px; }
.chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: auto; }
.chip { font-size: 12px; padding: 1px 8px; border-radius: 999px; background: #f1f5f9; color: #334155; white-space: nowrap; }
.chip.ok { background: #f0fdf4; color: var(--ok); }
.chip.warn { background: #fffbeb; color: var(--warn); }
.chip.bad { background: #fef2f2; color: var(--danger); }
.chip.info { background: var(--primary-soft); color: var(--primary-dark); }
.skeleton { background: linear-gradient(90deg, #f1f5f9, #f8fafc, #f1f5f9); background-size: 200% 100%; animation: sk 1.2s infinite; }
@keyframes sk { to { background-position: -200% 0; } }

/* Panels */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 18px; min-width: 0; }
.panel-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }

/* Chat: 왼쪽 예시, 오른쪽 답변 */
.chat { display: grid; grid-template-columns: 300px 1fr; gap: 18px; }
@media (max-width: 860px) { .chat { grid-template-columns: 1fr; } }
.examples { border-right: 1px solid var(--border); padding-right: 16px; }
@media (max-width: 860px) { .examples { border-right: 0; padding-right: 0; } }
.examples h3 { margin-bottom: 8px; color: var(--muted); }
.examples ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 6px; }
.examples button { width: 100%; text-align: left; border: 1px solid var(--border); background: #fafbfd; border-radius: 8px;
  padding: 8px 10px; font: inherit; font-size: 13.5px; color: var(--text); cursor: pointer; }
.examples button:hover { border-color: #bfdbfe; background: var(--primary-soft); }
.examples button:disabled { cursor: progress; opacity: .6; }
.chat-main { min-width: 0; }
.ask { display: flex; gap: 10px; align-items: stretch; }
.ask textarea { flex: 1; border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; font: inherit; resize: vertical; min-width: 0; }
textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--primary); }
@media (max-width: 520px) { .ask { flex-direction: column; } }

.status { margin-top: 12px; padding: 10px 14px; border-radius: 8px; background: var(--primary-soft); color: var(--primary-dark); font-size: 14px; }
.status.error { background: #fef2f2; color: var(--danger); }
.answer { margin-top: 14px; }
.answer-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.answer-empty { margin-top: 14px; border: 1px dashed var(--border); border-radius: var(--radius); padding: 40px 16px;
  text-align: center; color: var(--muted); font-size: 14px; }
.tag { font-size: 12px; background: var(--primary-soft); color: var(--primary-dark); padding: 2px 8px; border-radius: 999px; }
.trace { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 6px; font-size: 12px; color: var(--muted); align-items: center; }
.trace code { background: #f1f5f9; color: #334155; padding: 1px 6px; border-radius: 4px; }

.markdown { margin-top: 10px; background: #fcfdff; border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 20px; overflow-wrap: anywhere; }
.markdown h1, .markdown h2, .markdown h3 { margin: 1.1em 0 .5em; line-height: 1.35; }
.markdown h1 { font-size: 19px; } .markdown h2 { font-size: 16.5px; border-bottom: 1px solid var(--border); padding-bottom: 4px; } .markdown h3 { font-size: 15px; }
.markdown > :first-child { margin-top: 0; }
.markdown > :last-child { margin-bottom: 0; }
.markdown p { margin: .6em 0; }
.markdown ul, .markdown ol { padding-left: 1.4em; }
.markdown code { background: #f1f5f9; padding: 1px 5px; border-radius: 4px; font-size: 13px; }
.markdown pre { background: #0f172a; color: #e2e8f0; padding: 12px 14px; border-radius: 8px; overflow-x: auto; }
.markdown pre code { background: none; color: inherit; }
.markdown blockquote { margin: .8em 0; padding: 6px 14px; border-left: 4px solid #93c5fd; background: var(--primary-soft); color: #334155; }
.markdown table { border-collapse: collapse; margin: .8em 0; display: block; overflow-x: auto; max-width: 100%; }
.markdown th, .markdown td { border: 1px solid var(--border); padding: 6px 10px; text-align: left; white-space: nowrap; }
.markdown th { background: #f1f5f9; }

/* Route cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.card { border: 1px solid var(--border); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 6px;
  transition: border-color .15s, box-shadow .15s; background: var(--surface); }
.card:hover { border-color: #bfdbfe; box-shadow: 0 4px 14px rgba(37,99,235,.10); }
.card p { margin: 0; color: var(--muted); font-size: 13.5px; flex: 1; }
.path { font-size: 12px; color: var(--muted); font-family: Consolas, monospace; }
.card .btn { align-self: flex-start; margin-top: 6px; }
.card.active { border-color: var(--primary); box-shadow: 0 0 0 2px #bfdbfe; }

/* Data viewer */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; max-height: 560px; }
table.data { border-collapse: collapse; width: 100%; font-size: 13.5px; }
table.data th, table.data td { padding: 7px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
table.data th { background: #f8fafc; color: #475569; font-weight: 600; position: sticky; top: 0; }
table.data td.num { text-align: right; font-variant-numeric: tabular-nums; }
table.data tr:hover td { background: #fafcff; }
.summary { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 10px; font-size: 13.5px; }
.summary b { color: var(--muted); font-weight: 600; margin-right: 4px; }
pre.json { background: #f8fafc; border: 1px solid var(--border); border-radius: 8px; padding: 12px; overflow: auto; max-height: 480px; font-size: 12.5px; margin: 0; }