:root {
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --series-1: #2a78d6;
  --series-1-soft: #86b6ef;
  --series-2: #eb6834;
  --accent-wash: #cde2fb;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --baseline: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --series-1: #3987e5;
    --series-1-soft: #184f95;
    --series-2: #d95926;
    --accent-wash: #104281;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --page: #0d0d0d;
  --surface: #1a1a19;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --grid: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --series-1: #3987e5;
  --series-1-soft: #184f95;
  --series-2: #d95926;
  --accent-wash: #104281;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-variant-numeric: tabular-nums;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

h1 { font-size: 1.6rem; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 1.15rem; margin: 0; font-weight: 600; }
.muted { color: var(--muted); margin: 2px 0 0; font-size: 0.875rem; }

header {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

button { font: inherit; color: inherit; cursor: pointer; }

.views {
  display: inline-flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
}
.views button {
  border: 0;
  background: none;
  padding: 6px 16px;
  border-radius: 7px;
  color: var(--ink-2);
}
.views button[aria-selected="true"] {
  background: var(--accent-wash);
  color: var(--ink);
  font-weight: 600;
}

.period {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.period h2 { min-width: 0; flex: 0 1 auto; }
.step {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 1.2rem;
  line-height: 1;
}
.step:disabled { opacity: 0.35; cursor: default; }
#date-picker {
  margin-left: auto;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 8px;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}
.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
}
.tile .label { color: var(--ink-2); font-size: 0.85rem; }
.tile .value { font-size: 1.7rem; font-weight: 650; letter-spacing: -0.01em; }
.tile .value small { font-size: 0.9rem; font-weight: 500; color: var(--ink-2); margin-left: 3px; }
.tile .sub { color: var(--muted); font-size: 0.8rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--ink-2);
  min-height: 20px;
}
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend .key-bar { width: 10px; height: 10px; border-radius: 2px; background: var(--series-1); }
.legend .key-partial { width: 10px; height: 10px; border-radius: 2px; background: var(--series-1-soft); }
.legend .key-line { width: 16px; height: 2px; border-radius: 1px; background: var(--series-2); }

.chart { position: relative; height: 340px; margin-top: 8px; }
.chart svg { display: block; width: 100%; height: 100%; overflow: visible; }
.chart .grid line { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--baseline); stroke-width: 1; }
.chart .tick { fill: var(--muted); font-size: 11px; }
.chart .bar { fill: var(--series-1); }
.chart .bar.partial { fill: var(--series-1-soft); }
.chart .col:hover .bar, .chart .col:focus .bar { filter: brightness(1.15); }
.chart .col { cursor: default; outline: none; }
.chart .col.clickable { cursor: pointer; }
.chart .col:focus-visible .hit { stroke: var(--series-1); stroke-width: 2; }
.chart .hit { fill: transparent; }
.chart .avg { fill: none; stroke: var(--series-2); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .avg-ring { fill: none; stroke: var(--surface); stroke-width: 5; stroke-linejoin: round; }
.chart .peak { fill: var(--ink-2); font-size: 11px; text-anchor: middle; }
.chart .empty { fill: var(--muted); font-size: 14px; text-anchor: middle; }
.hint { margin: 8px 0 0; }

.tooltip {
  position: fixed;
  z-index: 10;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  padding: 8px 10px;
  font-size: 0.85rem;
  min-width: 120px;
}
.tooltip .t-head { color: var(--ink-2); margin-bottom: 4px; }
.tooltip .t-row { display: flex; align-items: center; gap: 8px; }
.tooltip .t-row strong { font-size: 1rem; }
.tooltip .t-row span { color: var(--ink-2); }
.tooltip .t-key { width: 12px; height: 2px; border-radius: 1px; flex: none; }

.table-card summary { cursor: pointer; color: var(--ink-2); }
.table-wrap { overflow-x: auto; margin-top: 12px; max-height: 420px; }
table { border-collapse: collapse; width: 100%; font-size: 0.9rem; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--grid); }
th { color: var(--ink-2); font-weight: 600; position: sticky; top: 0; background: var(--surface); }
td.num, th.num { text-align: right; }

@media (max-width: 600px) {
  h1 { font-size: 1.35rem; }
  .chart { height: 280px; }
  .tiles { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
  .tile { padding: 10px; }
  .tile .label { font-size: 0.75rem; }
  .tile .value { font-size: 1.2rem; }
  .tile .value small { font-size: 0.75rem; }
  .tile .sub { font-size: 0.7rem; }
  #date-picker { margin-left: 0; }
  .period { flex-wrap: wrap; }
}