:root {
  --bg: #f5f8fc;
  --panel: #ffffff;
  --border: #d8e0ea;
  --text: #1c2733;
  --muted: #5d6b7a;
  --accent: #1f5fa8;
  --ok: #dbf5db;
  --okText: #1d6b2a;
  --bad: #ffe0e0;
  --badText: #a02020;
  --locked: #eef1f5;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: "Segoe UI", system-ui, sans-serif; font-size: 13px;
  background: var(--bg); color: var(--text);
}
.topbar {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.title { font-size: 16px; font-weight: 700; }
.title span { font-weight: 400; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 6px; }
button {
  font: inherit; padding: 6px 12px; border: 1px solid var(--border); border-radius: 6px;
  background: #fff; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button:disabled { opacity: .5; cursor: wait; }

.layout {
  display: grid; grid-template-columns: 520px 1fr; gap: 12px; padding: 12px;
}
@media (max-width: 1100px) { .layout { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; }
.panel h2 { margin: 0 0 8px; font-size: 14px; color: var(--accent); }
.card { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; margin-bottom: 10px; }
.card h3 { margin: 0 0 8px; font-size: 13px; }
.card.sub { margin-top: 10px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 700px) { .grid2 { grid-template-columns: 1fr; } }

.tabs { display: flex; flex-wrap: wrap; gap: 2px; border-bottom: 1px solid var(--border); }
.tabs button { border: none; border-radius: 6px 6px 0 0; background: transparent; padding: 6px 10px; color: var(--muted); }
.tabs button.active { background: var(--bg); color: var(--accent); font-weight: 600; border: 1px solid var(--border); border-bottom-color: var(--bg); }
.tabbody { display: none; padding: 10px 2px; }
.tabbody.active { display: block; }

.tabfig { margin: 0 0 12px; text-align: center; }
.tabfig img {
  max-width: 100%; max-height: 360px; object-fit: contain; cursor: zoom-in;
  border: 1px solid var(--border); border-radius: 6px; background: #fff;
}
.tabfig figcaption { color: var(--muted); font-size: 11.5px; margin-top: 4px; }

.lightbox {
  position: fixed; inset: 0; z-index: 20; display: none; align-items: center; justify-content: center;
  background: rgba(10, 20, 30, .82); padding: 16px; cursor: zoom-out;
}
.lightbox.show { display: flex; }
.lightbox figure { margin: 0; text-align: center; }
.lightbox img { max-width: 96vw; max-height: 88vh; background: #fff; border-radius: 6px; }
.lightbox figcaption { color: #fff; margin-top: 8px; font-size: 13px; }

.row { display: grid; grid-template-columns: 220px 1fr; align-items: center; gap: 8px; margin-bottom: 4px; }
.row input[type=number], .row select {
  font: inherit; padding: 4px 6px; border: 1px solid var(--border); border-radius: 4px; width: 100%;
}
.row input[readonly] { background: var(--locked); color: var(--muted); }

.kv { display: grid; grid-template-columns: 220px 1fr; gap: 8px; margin-bottom: 4px; }
.kvgrid { display: grid; grid-template-columns: 70px 1fr 70px 1fr; gap: 4px 8px; align-items: center; }
.kvgrid.three { grid-template-columns: 80px 1fr 80px 1fr 80px 1fr; }
@media (max-width: 700px) { .kvgrid.three { grid-template-columns: 80px 1fr; } }
output {
  display: block; padding: 3px 6px; border: 1px solid var(--border); border-radius: 4px;
  background: #fafbfd; font-variant-numeric: tabular-nums; min-height: 22px;
}
output.pass { background: var(--ok); color: var(--okText); font-weight: 600; }
output.fail { background: var(--bad); color: var(--badText); font-weight: 600; }
.note { color: var(--muted); font-size: 12px; white-space: pre-line; margin-top: 4px; }

.plot { width: 100%; height: 270px; }
.plot svg { width: 100%; height: 100%; }
.plot .axis { stroke: #9aa7b5; stroke-width: 1; }
.plot .gridl { stroke: #e6ebf1; stroke-width: 1; }
.plot text { font-size: 10px; fill: var(--muted); }

pre#summary {
  margin: 0; font-family: Consolas, monospace; font-size: 12px; background: #fafbfd;
  border: 1px solid var(--border); border-radius: 4px; padding: 8px; white-space: pre-wrap;
}

.toast {
  position: fixed; right: 16px; bottom: 16px; max-width: 420px; padding: 10px 14px;
  border-radius: 8px; background: #333; color: #fff; opacity: 0; transition: opacity .2s;
  pointer-events: none; white-space: pre-line; z-index: 10;
}
.toast.show { opacity: .95; }
.toast.error { background: var(--badText); }
.toast.success { background: var(--okText); }