:root {
  --bg: #f6f6f3;
  --surface: #ffffff;
  --text: #1b1c1a;
  --muted: #666862;
  --border: #e3e3dd;
  --accent: #0f766e;
  --accent-text: #ffffff;
  --bajo: #2563eb;
  --alto: #dc2626;
  --normal: #16a34a;
  --na: #8a8c86;
  --band: rgba(22, 163, 74, 0.13);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121413;
    --surface: #1b1e1c;
    --text: #ecece8;
    --muted: #9a9c95;
    --border: #2d312e;
    --accent: #2dd4bf;
    --accent-text: #06231f;
    --bajo: #60a5fa;
    --alto: #f87171;
    --normal: #4ade80;
    --na: #7d7f79;
    --band: rgba(74, 222, 128, 0.14);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
header.top h1 { font-size: 1.05rem; margin: 0; }
#user { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 0.85rem; min-width: 0; }
#user span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

main { max-width: 980px; margin: 0 auto; padding: 16px; }

button, select {
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
}
button { cursor: pointer; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

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

.center { max-width: 420px; margin: 12vh auto 0; text-align: center; }
.center h2 { margin-top: 0; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

.error {
  background: color-mix(in srgb, var(--alto) 12%, var(--surface));
  border: 1px solid var(--alto);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
}

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.tabs { display: flex; gap: 6px; }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.spacer { flex: 1; }

details.estudio { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 10px; }
details.estudio > summary { cursor: pointer; padding: 12px 16px; display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: baseline; }
details.estudio > summary .fecha { font-weight: 600; }
details.estudio .body { padding: 0 16px 16px; }
details.estudio h3 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin: 16px 0 6px; }

.badge { display: inline-block; border-radius: 999px; padding: 1px 9px; font-size: 0.78rem; border: 1px solid currentColor; }
.badge.bajo { color: var(--bajo); }
.badge.alto { color: var(--alto); }
.badge.normal { color: var(--normal); }
.badge.na { color: var(--na); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 0.8rem; white-space: nowrap; }
td.num { white-space: nowrap; }
tr.fuera td:first-child { box-shadow: inset 3px 0 0 var(--alto); }
tr.fuera.bajo td:first-child { box-shadow: inset 3px 0 0 var(--bajo); }

.chart-box { position: relative; height: 320px; }
.disclaimer { margin: 24px 0 8px; color: var(--muted); font-size: 0.8rem; text-align: center; }

@media (max-width: 560px) {
  main { padding: 12px; }
  .chart-box { height: 260px; }
}