:root {
  color-scheme: light;
  --bg: #f3f5fb;
  --card: #ffffff;
  --ink: #16213a;
  --muted: #5d6b87;
  --line: #dfe5f2;
  --brand: #2456e6;
  --brand-dark: #183ca8;
  --warn-bg: #fff7d6;
  --danger: #c22727;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top, #e3ebff 0, var(--bg) 38%) fixed;
  color: var(--ink);
  font-family: "Pretendard", "Noto Sans KR", system-ui, -apple-system, "Segoe UI", sans-serif;
}

.page {
  width: min(1220px, calc(100% - 32px));
  margin: 28px auto 64px;
}

.hero {
  background: linear-gradient(135deg, #14224d, #2c55e5 70%, #5f8bff);
  color: #fff;
  border-radius: 22px;
  padding: 30px 30px 26px;
  box-shadow: 0 18px 45px rgba(25, 57, 160, 0.28);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.82;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(24px, 4vw, 36px);
}

.subtitle { margin: 0; line-height: 1.55; opacity: 0.93; }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 18px 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 10px 28px rgba(20, 35, 80, 0.08);
}

.card.wide { grid-column: 1 / -1; }
.card h2 { margin: 0 0 8px; font-size: 20px; }
.hint { color: var(--muted); line-height: 1.55; }
.stat { font-size: 17px; }

.field {
  display: grid;
  gap: 6px;
  margin: 12px 0;
  font-weight: 600;
}

input, select {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  font-size: 15px;
  background: #fbfcff;
}

input:focus, select:focus, button:focus-visible {
  outline: 3px solid rgba(36, 86, 230, 0.28);
  outline-offset: 1px;
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.row.wrap { flex-wrap: wrap; }

button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

button:hover:not(:disabled) { transform: translateY(-1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

button.primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

button.primary:hover:not(:disabled) { background: var(--brand-dark); }
button.big { font-size: 16px; padding: 13px 18px; }
button.ghost { background: #eef2ff; }
button.danger { background: #fdecec; border-color: #f3b8b8; color: var(--danger); }

.status {
  min-height: 22px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.5;
  word-break: break-word;
}

.status.error { color: var(--danger); font-weight: 700; }
.status.success { color: #14662a; font-weight: 700; }

.upload-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.file-button {
  display: inline-block;
  background: #101c44;
  color: white;
  border-radius: 12px;
  padding: 11px 16px;
  font-weight: 800;
  cursor: pointer;
}

.file-name { color: var(--muted); }

.preview-wrap {
  margin-top: 14px;
  border: 1px dashed #9fb0df;
  background: #f7faff;
  border-radius: 14px;
  padding: 12px;
}

.preview-wrap img {
  display: block;
  width: min(560px, 100%);
  height: auto;
  border-radius: 10px;
}

.table-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  flex-wrap: wrap;
}

.table-scroll {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  margin: 12px 0 4px;
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 1180px;
  font-size: 14px;
}

thead th {
  position: sticky;
  top: 0;
  background: #101c44;
  color: #fff;
  padding: 11px 8px;
  white-space: nowrap;
  z-index: 1;
}

tbody td {
  border-top: 1px solid var(--line);
  padding: 0;
  min-width: 80px;
  background: #fff;
}

tbody td[contenteditable="true"] {
  padding: 9px 8px;
  outline: none;
}

tbody tr:nth-child(even) td { background: #f7f9ff; }
tbody tr.selected td { box-shadow: inset 0 0 0 999px rgba(36, 86, 230, 0.12); }
tbody tr.low-match td { background: var(--warn-bg); }
tbody tr.low-match:nth-child(even) td { background: #ffefad; }
tbody td.num { text-align: right; font-variant-numeric: tabular-nums; }

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr; }
  .page { margin-top: 16px; }
}