:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --ink: #1c2430;
  --muted: #66707d;
  --line: #dde2e8;
  --accent: #2563eb;
  --accent-ink: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}

header h1 {
  font-size: 18px;
  margin: 0;
}

header .sub {
  color: var(--muted);
  font-weight: 400;
  font-size: 13px;
  margin-left: 6px;
}

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

.controls select,
.filters select,
.filters input[type="date"],
#table-search {
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--card);
  color: var(--ink);
  font: inherit;
}

#refresh {
  padding: 6px 14px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

#refresh:disabled { opacity: 0.6; cursor: wait; }
#refresh:hover:not(:disabled) { filter: brightness(1.08); }

.meta { color: var(--muted); font-size: 12px; }

#tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 10px 24px 0;
}

.tab {
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.tab.active {
  background: var(--card);
  color: var(--ink);
  font-weight: 600;
}

main { padding: 0 24px 24px; }

.view { display: none; }
.view.active { display: block; }

.hint { color: var(--muted); margin: 12px 0; }
.hint b { color: var(--ink); }

.empty-note {
  padding: 48px 16px;
  text-align: center;
  color: var(--muted);
  font-size: 15px;
}

.chart-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  max-width: 1100px;
}

/* Let taps through to Chart.js (tooltip) while keeping vertical page scroll. */
.chart-wrap canvas {
  touch-action: pan-y;
}

.filters {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  color: var(--muted);
}

.filters input[type="checkbox"] {
  accent-color: var(--accent);
  vertical-align: -2px;
}

.linkbtn {
  border: none;
  background: none;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  padding: 0;
}
.linkbtn:hover { text-decoration: underline; }

#table-search { width: 280px; margin-bottom: 12px; }

.table-wrap {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: auto;
  max-height: 72vh;
}

table { border-collapse: collapse; width: 100%; }

th, td {
  text-align: left;
  padding: 7px 12px;
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}

th {
  position: sticky;
  top: 0;
  background: var(--card);
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

th.sorted { color: var(--ink); }
tbody tr:hover { background: #f0f4ff; }
td:first-child { font-weight: 600; }

footer {
  padding: 16px 24px 28px;
  color: var(--muted);
  font-size: 12px;
}

footer code {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}