/* ---------- 색 토큰 (라이트) ---------- */
:root {
  color-scheme: light;
  --bg: #f4f4f2;
  --surface: #fcfcfb;
  --surface-2: #efeeea;
  --border: #dddcd6;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7b7a74;
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --user-bubble: #2a78d6;
  --bot-bubble: #efeeea;
  --danger: #c93a39;
  --good: #1a7f37;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --grid: #e6e5e0;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06);
}

/* ---------- 다크: OS 설정 + 토글 둘 다 ---------- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #111110;
    --surface: #1a1a19;
    --surface-2: #252523;
    --border: #353532;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #93928a;
    --accent: #3987e5;
    --user-bubble: #2f6fbf;
    --bot-bubble: #252523;
    --danger: #e66767;
    --good: #4cc26a;
    --series-1: #3987e5;
    --series-2: #d95926;
    --grid: #2c2c2a;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111110;
  --surface: #1a1a19;
  --surface-2: #252523;
  --border: #353532;
  --text: #f0efec;
  --text-2: #c3c2b7;
  --muted: #93928a;
  --accent: #3987e5;
  --user-bubble: #2f6fbf;
  --bot-bubble: #252523;
  --danger: #e66767;
  --good: #4cc26a;
  --series-1: #3987e5;
  --series-2: #d95926;
  --grid: #2c2c2a;
  --shadow: none;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
}
h1, h2, h3 { margin: 0; }
h2 { font-size: 15px; }
h3 { font-size: 13px; color: var(--text-2); margin: 18px 0 8px; }
.muted { color: var(--muted); font-size: 12px; }

/* ---------- 상단 ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand h1 { font-size: 17px; }
@media (max-width: 720px) { .brand h1 { font-size: 15px; } }
.brand .sub { color: var(--muted); font-size: 12px; }
.top-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.pill {
  font-size: 12px; padding: 3px 10px; border-radius: 999px;
  background: var(--surface-2); color: var(--text-2); white-space: nowrap;
}
.pill.ok { color: var(--good); }
.pill.err { color: var(--danger); }
.banner {
  padding: 10px 20px; background: #fff4d6; color: #5c4400; font-size: 13px; text-align: center;
}
:root[data-theme="dark"] .banner { background: #3a3014; color: #f3dc9a; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .banner { background: #3a3014; color: #f3dc9a; } }

/* ---------- 버튼 / 입력 ---------- */
.btn {
  font: inherit; cursor: pointer; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); border-radius: 8px; padding: 8px 14px;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.danger { color: var(--danger); }
input, textarea {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; min-width: 0;
}
input:focus, textarea:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---------- 레이아웃: 3단 ---------- */
.layout {
  flex: 1; min-height: 0;
  display: grid; grid-template-columns: 240px minmax(0, 1fr) minmax(360px, 440px);
  gap: 12px; padding: 12px;
}
.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow); padding: 14px; min-height: 0; display: flex; flex-direction: column;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.tabs { display: none; }

/* ---------- 대화 기록 ---------- */
.conv-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; }
.conv-list li {
  display: flex; align-items: center; gap: 4px; border-radius: 8px; padding: 2px 2px 2px 0;
}
.conv-list li.active { background: var(--surface-2); }
.conv-open {
  flex: 1; min-width: 0; text-align: left; font: inherit; color: var(--text); background: none; border: 0;
  padding: 8px 10px; cursor: pointer; border-radius: 8px;
}
.conv-open:hover { background: var(--surface-2); }
.conv-open .t { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-open .m { display: block; font-size: 11px; color: var(--muted); }
.conv-del { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 6px 8px; border-radius: 6px; font-size: 14px; }
.conv-del:hover { color: var(--danger); background: var(--surface-2); }
.conv-empty { color: var(--muted); font-size: 12px; padding: 8px; }

/* ---------- 채팅 ---------- */
.messages { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding: 4px 2px 12px; }
.msg { max-width: 80%; padding: 10px 14px; border-radius: 14px; word-break: break-word; }
.msg.user { align-self: flex-end; background: var(--user-bubble); color: #fff; border-bottom-right-radius: 4px; white-space: pre-wrap; }
.msg.assistant { align-self: flex-start; background: var(--bot-bubble); border-bottom-left-radius: 4px; }
.msg.error { align-self: flex-start; background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.msg.loading { color: var(--text-2); }
.dots span { animation: blink 1.2s infinite; }
.dots span:nth-child(2) { animation-delay: .2s; }
.dots span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .2; } 40% { opacity: 1; } }
.empty-chat { margin: auto; text-align: center; color: var(--text-2); max-width: 460px; }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 12px; }
.chip {
  font: inherit; font-size: 13px; cursor: pointer; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); border-radius: 999px; padding: 6px 12px;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chat-form { display: flex; gap: 8px; border-top: 1px solid var(--border); padding-top: 12px; }
.chat-form textarea { flex: 1; resize: none; max-height: 140px; }

/* ---------- 요약 카드 ---------- */
.data { overflow-y: auto; }
.data > * { flex-shrink: 0; } /* 스크롤되는 패널에서 그래프가 눌리지 않게 */
.summary-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.stat { background: var(--surface-2); border-radius: 10px; padding: 10px 12px; min-width: 0; }
.stat .k { font-size: 11px; color: var(--muted); }
.stat .v { font-size: 17px; font-weight: 700; font-variant-numeric: tabular-nums; }
.stat .d { font-size: 11px; color: var(--text-2); }
.stat.wide { grid-column: 1 / -1; }
.trend-up { color: var(--good); }
.trend-down { color: var(--danger); }

/* ---------- 그래프 ---------- */
.chart-legend { display: flex; gap: 14px; font-size: 12px; color: var(--text-2); margin-bottom: 4px; }
.swatch { display: inline-block; width: 14px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.swatch.s1 { background: var(--series-1); }
.swatch.s2 { background: var(--series-2); }
.chart { position: relative; height: 220px; }
.chart svg { display: block; width: 100%; height: 100%; }
.chart .grid-line { stroke: var(--grid); stroke-width: 1; }
.chart .axis-text { fill: var(--muted); font-size: 10px; }
.chart .line-1 { fill: none; stroke: var(--series-1); stroke-width: 1.5; opacity: .75; }
.chart .line-2 { fill: none; stroke: var(--series-2); stroke-width: 2; }
.chart .cross { stroke: var(--text-2); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .dot-1 { fill: var(--series-1); stroke: var(--surface); stroke-width: 2; }
.chart .dot-2 { fill: var(--series-2); stroke: var(--surface); stroke-width: 2; }
.chart-tip {
  position: absolute; pointer-events: none; background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; font-size: 12px; box-shadow: 0 2px 8px rgba(0, 0, 0, .12); white-space: nowrap;
}
.chart-tip b { display: block; }

/* ---------- 데이터 관리 ---------- */
.add-form { display: grid; grid-template-columns: 1.2fr .8fr 1.4fr auto; gap: 6px; }
.export { display: flex; align-items: center; gap: 6px; margin: 10px 0 6px; }
.export .muted { margin-right: auto; }
.table-wrap { border: 1px solid var(--border); border-radius: 8px; max-height: 320px; overflow-y: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 12px; table-layout: fixed; }
.data-table th:nth-child(1) { width: 30%; }
.data-table th:nth-child(2) { width: 20%; }
.data-table th:nth-child(4) { width: 72px; }
.data-table th { position: sticky; top: 0; background: var(--surface-2); text-align: left; font-weight: 600; color: var(--text-2); }
.data-table th, .data-table td { padding: 6px 8px; border-bottom: 1px solid var(--border); }
.data-table td.num { font-variant-numeric: tabular-nums; text-align: right; }
.data-table td.memo { color: var(--text-2); max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.data-table td.act { white-space: nowrap; text-align: right; }
.data-table td.act button { background: none; border: 0; cursor: pointer; font: inherit; font-size: 12px; color: var(--accent); padding: 2px 4px; }
.data-table td.act button.del { color: var(--danger); }
.data-table input { width: 100%; padding: 3px 6px; font-size: 12px; }
.data-table tr.flash { animation: flash 1.5s; }
@keyframes flash { from { background: color-mix(in srgb, var(--accent) 25%, transparent); } to { background: transparent; } }

/* ---------- 토스트 ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 10;
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; font-size: 13px;
  max-width: calc(100% - 32px);
}
.toast.err { background: var(--danger); color: #fff; }

/* ---------- 반응형 ---------- */
@media (max-width: 1100px) {
  .layout { grid-template-columns: 200px minmax(0, 1fr); }
  .data { grid-column: 1 / -1; }
  body { display: block; }
  .chat { height: 70vh; }
}
@media (max-width: 720px) {
  .topbar { padding: 10px 16px; }
  .brand .sub { display: none; }
  .tabs { display: flex; gap: 4px; padding: 8px 16px 0; }
  .tabs button {
    flex: 1; font: inherit; padding: 8px; border: 1px solid var(--border); background: var(--surface);
    color: var(--text-2); border-radius: 8px; cursor: pointer;
  }
  .tabs button.active { background: var(--accent); color: #fff; border-color: var(--accent); }
  .layout { display: block; padding: 8px 16px 16px; }
  .panel { display: none; }
  .panel.active { display: flex; }
  .chat { height: calc(100vh - 150px); }
  .msg { max-width: 92%; }
  .add-form { grid-template-columns: 1fr 1fr; }
}