/* SPDX-License-Identifier: MIT
 * Copyright (c) 2012-2026 Thiago de Freitas (https://github.com/thiagodefreitas) */

:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #f1f3f6;
  --border: #e3e6eb;
  --text: #16181d;
  --muted: #697080;
  --accent: #2563eb;
  --accent-soft: #2563eb1a;
  --good: #16a34a;
  --warn: #d97706;
  --bad: #dc2626;
  --grid: #0000000f;
  --axis: #697080;
  --radius: 12px;
  --shadow: 0 1px 2px #0000000d, 0 4px 16px #0000000a;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Inter", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0e1116; --panel: #161a21; --panel-2: #1d222b; --border: #262c36;
    --text: #e6e8ec; --muted: #8b93a3; --accent: #60a5fa; --accent-soft: #60a5fa22;
    --grid: #ffffff12; --axis: #8b93a3; --shadow: 0 1px 2px #0006, 0 8px 24px #0004;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1116; --panel: #161a21; --panel-2: #1d222b; --border: #262c36;
  --text: #e6e8ec; --muted: #8b93a3; --accent: #60a5fa; --accent-soft: #60a5fa22;
  --grid: #ffffff12; --axis: #8b93a3; --shadow: 0 1px 2px #0006, 0 8px 24px #0004;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text); font: 14px/1.45 var(--font);
  display: flex; flex-direction: column; -webkit-font-smoothing: antialiased;
}
code { font-family: var(--mono); font-size: 0.92em; background: var(--panel-2); padding: 0 4px; border-radius: 4px; }
h2 { margin: 0 0 8px; font-size: 20px; letter-spacing: -0.01em; }
h3 { margin: 14px 0 6px; font-size: 13px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }

/* top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px; background: color-mix(in srgb, var(--panel) 85%, transparent);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(8px);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; letter-spacing: -0.02em; }
.brand svg { width: 24px; height: 24px; }
.brand svg circle { fill: var(--accent); }
.brand svg path { stroke: #fff; stroke-width: 3; fill: none; stroke-linecap: round; }
.brand small { color: var(--muted); font-weight: 500; font-size: 12px; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* controls */
.btn, select, input[type=number], input:not([type]), input[type=text] {
  font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 10px; min-height: 32px;
}
.btn { cursor: pointer; display: inline-flex; align-items: center; gap: 6px; transition: background .12s, border-color .12s; }
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 3px 9px; min-height: 26px; font-size: 12.5px; }
.btn.icon { width: 32px; justify-content: center; padding: 0; }
select { cursor: pointer; }
input[type=number] { width: 90px; }
label { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 13px; }
label.check { gap: 4px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border); display: inline-block; }
.dot.on { background: var(--good); box-shadow: 0 0 0 3px color-mix(in srgb, var(--good) 30%, transparent); animation: pulse 1.6s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 6px transparent; } }

/* layout */
.layout { flex: 1; display: grid; grid-template-columns: 280px 1fr; min-height: 0; }
.sidebar { border-right: 1px solid var(--border); padding: 12px; overflow: auto; background: var(--panel); }
.side-head { font-weight: 600; margin: 4px 4px 8px; display: flex; justify-content: space-between; align-items: baseline; }
.hint { color: var(--muted); font-weight: 400; font-size: 12px; }
.datasets { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.datasets li {
  display: grid; grid-template-columns: auto 10px 1fr auto; gap: 8px; align-items: center;
  padding: 8px; border-radius: 8px; cursor: pointer; border: 1px solid transparent;
}
.datasets li:hover { background: var(--panel-2); }
.datasets li.active { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.datasets .sw { width: 10px; height: 10px; border-radius: 3px; }
.datasets .nm { overflow: hidden; }
.datasets .nm b { display: block; font-weight: 550; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.datasets .nm small { color: var(--muted); font-size: 12px; }
.datasets .x { opacity: 0; border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 16px; }
.datasets li:hover .x { opacity: 1; }
.empty-side { color: var(--muted); font-size: 13px; padding: 4px; }

main { padding: 12px 20px 24px; overflow: auto; min-width: 0; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 10px; overflow-x: auto; }
.tabs button {
  font: inherit; background: none; border: 0; padding: 8px 14px; color: var(--muted); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px; font-weight: 550;
}
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.controls, .subcontrols { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin: 6px 0 10px; }
.subcontrols { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 12px; }
.grow { flex: 1; }
.chip { background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 3px 10px; font-size: 12.5px; cursor: pointer; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chips button {
  font: inherit; font-size: 12.5px; border-radius: 999px; padding: 3px 10px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel); color: var(--muted);
}
.chips button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.busy { width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.tab { display: none; }
.tab.active { display: block; }
.chart { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 8px 2px; margin-bottom: 10px; box-shadow: var(--shadow); min-height: 120px; }
.chart:empty::after { content: "Select a dataset"; display: block; color: var(--muted); padding: 40px; text-align: center; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.note { color: var(--muted); font-size: 12.5px; margin: 6px 2px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; margin-bottom: 12px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow); }
.card .k { color: var(--muted); font-size: 12px; }
.card .v { font-size: 20px; font-weight: 650; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.card .s { color: var(--muted); font-size: 12px; }
.welcome { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; max-width: 860px; }
.welcome li { margin: 4px 0; }

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; font-size: 13px; background: var(--panel); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
th, td { padding: 6px 10px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; background: var(--panel-2); position: sticky; top: 0; }
td:first-child, th:first-child { text-align: left; }
tr:last-child td { border-bottom: 0; }

dialog { border: 1px solid var(--border); border-radius: 14px; background: var(--panel); color: var(--text); padding: 20px 22px; width: min(520px, 92vw); box-shadow: 0 20px 60px #0005; }
dialog::backdrop { background: #0006; backdrop-filter: blur(2px); }
dialog h3 { margin-top: 0; color: var(--text); text-transform: none; font-size: 17px; letter-spacing: 0; }
dialog form > label { display: flex; justify-content: space-between; margin: 10px 0; }
dialog form > label input, dialog form > label select { width: 62%; }
dialog menu { display: flex; justify-content: flex-end; gap: 8px; padding: 0; margin: 16px 0 0; }
.kv { font-family: var(--mono); font-size: 12.5px; white-space: pre-wrap; }

.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 10px; box-shadow: var(--shadow); z-index: 50; max-width: 80vw; }
.toast.err { background: var(--bad); color: #fff; }
.drop { position: fixed; inset: 0; display: grid; place-items: center; font-size: 22px; font-weight: 600; color: var(--accent); background: color-mix(in srgb, var(--bg) 85%, transparent); border: 3px dashed var(--accent); z-index: 60; }
footer { color: var(--muted); font-size: 12px; text-align: center; padding: 6px; border-top: 1px solid var(--border); }

/* uPlot theming */
.uplot { font-family: var(--font); }
.u-legend { font-size: 12px; color: var(--text); }
.u-legend .u-marker { border-radius: 2px; }
.u-select { background: var(--accent-soft); }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); max-height: 34vh; }
  .grid2 { grid-template-columns: 1fr; }
  main { padding: 10px 16px; }
}

.chart.heat { padding: 8px; }
.chart.heat canvas { width: 100%; height: 340px; display: block; }
.chip.pass { background: color-mix(in srgb, var(--good) 18%, transparent); color: var(--good); }
.chip.fail { background: color-mix(in srgb, var(--bad) 18%, transparent); color: var(--bad); }
td.fail { color: var(--bad); font-weight: 600; }

/* in-browser edition: boot banner */
.boot { position: sticky; top: 0; z-index: 50; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--grid);
  display: flex; gap: 8px; flex-wrap: wrap; align-items: baseline; font-size: 14px; }
.boot small { color: var(--muted); flex-basis: 100%; }