:root {
  --bg: #f3f5f7;
  --fg: #1b2430;
  --muted: #5c6b7a;
  --line: #d5dce3;
  --accent: #0b6e4f;
  --danger: #9b1c1c;
  --surface: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans KR", "Noto Sans KR", "Segoe UI", sans-serif;
  color: var(--fg);
  background:
    radial-gradient(circle at top left, #dceee6 0%, transparent 40%),
    linear-gradient(180deg, #eef2f5 0%, var(--bg) 100%);
  min-height: 100vh;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

.header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.75rem;
}

.header p {
  margin: 0 0 1.25rem;
  color: var(--muted);
}

.header a {
  color: var(--accent);
}

.data-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0.75rem;
}

.data-tabs button {
  padding: 0.65rem 1rem;
  font: inherit;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  color: var(--fg);
  background: var(--surface);
  cursor: pointer;
}

.data-tabs button[aria-selected="true"] {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

#data-description {
  color: var(--muted);
}

.stored-overview {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stored-overview[hidden] {
  display: none;
}

.stored-overview article {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--surface);
}

.stored-overview span,
.stored-overview strong {
  display: block;
}

.stored-overview span {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

.stored-overview strong {
  font-size: 1.05rem;
}

@media (max-width: 700px) {
  .stored-overview { grid-template-columns: 1fr; }
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: end;
  margin-bottom: 1rem;
}

.filters label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.filters input,
.filters select,
.filters button {
  font: inherit;
  padding: 0.45rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: var(--surface);
  color: var(--fg);
}

.filters button {
  cursor: pointer;
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.filters button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.status {
  min-height: 1.4rem;
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

.table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 960px;
}

th,
td {
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
  font-size: 0.9rem;
}

th {
  background: #f7faf8;
  font-weight: 600;
}

tbody tr:last-child td {
  border-bottom: none;
}