:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e3e6eb;
  --text: #1d2330;
  --muted: #6b7385;
  --accent: #2f6fed;
  --accent-hover: #2459c4;
  --warn-bg: #fff7e6;
  --warn-border: #f3c36b;
  --uncertain-bg: #fff3c4;
  --ok: #2e7d32;
  --warn: #d48806;
  --error: #c62828;
  --subtotal-bg: #f0f2f6;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d;
    --surface: #1d2129;
    --border: #2e3440;
    --text: #e6e9ef;
    --muted: #9aa3b5;
    --accent: #5b8ef5;
    --accent-hover: #7aa4f7;
    --warn-bg: #3a2f16;
    --warn-border: #8a6a24;
    --uncertain-bg: #4a3f12;
    --ok: #6cc070;
    --warn: #f0b445;
    --error: #ef6a6a;
    --subtotal-bg: #252a34;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

.topbar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topbar h1 { margin: 0; font-size: 20px; }
.topbar h1 small { font-size: 13px; color: var(--muted); font-weight: 500; margin-left: 4px; }
.model { color: var(--muted); font-size: 13px; }

.page { max-width: 1600px; margin: 0 auto; padding: 16px 16px 48px; }

/* ---------- 상단 컨트롤 ---------- */
.controls {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto;
  gap: 12px 16px;
  align-items: stretch;
  margin-bottom: 16px;
}
@media (max-width: 820px) { .controls { grid-template-columns: 1fr; } }

.dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 96px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  transition: border-color 0.15s;
}
.dropzone:hover, .dropzone.dragover { border-color: var(--accent); }
.dropzone-empty { display: flex; flex-direction: column; gap: 4px; text-align: center; padding: 16px; color: var(--muted); }
.dropzone-empty strong { color: var(--text); }
.dropzone-file { display: flex; align-items: center; gap: 12px; padding: 12px 16px; width: 100%; }
.dropzone-file img { height: 72px; max-width: 96px; object-fit: contain; border-radius: 4px; }
.file-badge {
  display: inline-grid; place-items: center;
  width: 52px; height: 64px;
  border-radius: 6px;
  background: var(--error); color: #fff; font-weight: 700; font-size: 13px;
}
.file-name { word-break: break-all; }

.options {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: 10px 14px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.options label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.options label.check { flex-direction: row; align-items: center; gap: 6px; color: var(--text); padding-bottom: 10px; }
.hint-inline { color: var(--muted); font-size: 12px; }
select {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
}

button { font: inherit; cursor: pointer; border-radius: 8px; }
button.primary {
  min-width: 120px;
  padding: 10px 20px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 16px;
}
button.primary:hover:not(:disabled) { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.ghost {
  padding: 6px 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 13px;
}

.summary {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.summary-metrics { display: grid; grid-template-columns: repeat(4, minmax(130px, 1fr)); gap: 10px; flex: 1; }
@media (max-width: 820px) { .summary-metrics { grid-template-columns: repeat(2, 1fr); } }
.summary .metric { background: var(--surface); }

.error { grid-column: 1 / -1; color: var(--error); margin: 0; white-space: pre-wrap; }

.placeholder, .loading {
  padding: 48px 24px;
  text-align: center;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  margin-right: 8px;
  vertical-align: -3px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 페이지 탭 ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.tab {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  max-width: 220px;
}
.tab.active { border-color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
.tab .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border); flex: none; }
.tab.ok .dot { background: var(--ok); }
.tab.warn .dot { background: var(--warn); }
.tab.error .dot { background: var(--error); }
.tab.pending .dot { background: transparent; border: 2px solid var(--border); border-top-color: var(--accent); animation: spin 0.8s linear infinite; }
.tab-sub { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 페이지 결과 ---------- */
.page-view {
  display: grid;
  grid-template-columns: minmax(300px, 5fr) 7fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 1000px) { .page-view { grid-template-columns: 1fr; } }

.page-image {
  position: sticky; top: 12px;
  margin: 0;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
@media (max-width: 1000px) { .page-image { position: static; } }
.page-image figcaption { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.page-image img { display: block; width: 100%; max-height: calc(100vh - 80px); object-fit: contain; cursor: zoom-in; background: #fff; }

.page-data .error { margin-bottom: 12px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin-bottom: 16px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
  min-width: 0;
}
.cards .card { margin-bottom: 0; }
.card h3 { margin: 0 0 10px; font-size: 15px; }
.card h3 .count { color: var(--muted); font-weight: 500; font-size: 13px; margin-left: 6px; }

dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 14px; margin: 0; font-size: 14px; }
dt { color: var(--muted); }
dd { margin: 0; word-break: break-word; }
.null { color: var(--muted); opacity: 0.6; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 6px 6px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 500; white-space: nowrap; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.idx { color: var(--muted); }
td.name { min-width: 160px; }
tr.subtotal td { background: var(--subtotal-bg); font-weight: 600; }
tr.uncertain td { background: var(--uncertain-bg); }
tfoot td { font-weight: 700; border-bottom: none; border-top: 2px solid var(--border); }
tfoot tr.computed td { font-weight: 500; color: var(--muted); border-top: none; }
tfoot td.match { color: var(--ok); }
tfoot td.mismatch { color: var(--error); }

.warnings {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 14px;
}
.warnings ul { margin: 4px 0 0; padding-left: 20px; }

.usage-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; }
.metric { padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
.metric .label { color: var(--muted); font-size: 12px; }
.metric .value { font-size: 19px; font-weight: 700; font-variant-numeric: tabular-nums; }
.metric .sub { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; min-height: 1em; }
.hint { color: var(--muted); font-size: 12px; margin: 10px 0 0; }

.raw summary { cursor: pointer; font-weight: 600; }
.raw[open] summary { margin-bottom: 8px; }
.raw pre {
  margin: 8px 0 0;
  padding: 12px;
  max-height: 420px;
  overflow: auto;
  background: var(--bg);
  border-radius: 8px;
  font-size: 12.5px;
}