/* ── Tokens ───────────────────────────────────────────────────────────── */

:root {
  color-scheme: light dark;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-2: #eef1f4;
  --zebra: #f8f9fb;
  --hover: #eaf0f8;
  --line: #dde2e8;
  --line-strong: #c3cad3;
  --fg: #161b24;
  --muted: #535d6c;

  --accent: #1a56b0;
  --accent-hover: #154a99;
  --on-accent: #ffffff;
  --accent-soft: #e8eff9;
  --accent-line: #b7cbea;
  --focus: #1a56b0;

  --ok: #1c6b3c;
  --ok-soft: #e4f3ea;
  --ok-line: #b5dcc3;
  --warn: #8a5300;
  --warn-soft: #fbf0dc;
  --warn-line: #ecd09c;
  --error: #b42318;
  --error-soft: #fdecea;
  --error-line: #f1b9b3;

  /* The header bar is dark in both themes, so it has its own set. */
  --chrome-bg: #17202b;
  --chrome-fg: #eef1f5;
  --chrome-muted: #aeb8c5;
  --chrome-line: #344152;
  --chrome-accent: #8ab8f7;

  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --surface: #161a21;
    --surface-2: #1d222b;
    --zebra: #191d25;
    --hover: #1f2a3a;
    --line: #2a303a;
    --line-strong: #3a424f;
    --fg: #e4e8ee;
    --muted: #9ba5b3;

    --accent: #7fb0f5;
    --accent-hover: #9cc2f8;
    --on-accent: #0b1220;
    --accent-soft: #19253a;
    --accent-line: #2f4a72;
    --focus: #8ab8f7;

    --ok: #6fd29a;
    --ok-soft: #12261b;
    --ok-line: #24533a;
    --warn: #f2bd62;
    --warn-soft: #2a2110;
    --warn-line: #5a4419;
    --error: #ff9b8f;
    --error-soft: #321a1a;
    --error-line: #6b2f2a;

    --chrome-bg: #11161d;
    --chrome-line: #2a323e;

    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  }
}

/* ── Base ─────────────────────────────────────────────────────────────── */

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font: 15px/1.5 var(--font);
  color: var(--fg);
  background: var(--bg);
}
/* A driver id can be 64 characters with nowhere to break (QA). */
h1 { font-size: 22px; line-height: 1.25; font-weight: 650; margin: 0 0 20px; letter-spacing: -0.01em; overflow-wrap: anywhere; }
h2 { font-size: 16px; line-height: 1.3; font-weight: 650; margin: 32px 0 12px; }
h3 { font-size: 13px; line-height: 1.3; font-weight: 650; margin: 0; color: var(--muted); }
p { margin: 0 0 12px; }
a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

.note { color: var(--muted); }
.code, .mono { font-family: var(--mono); font-size: 0.92em; }
.code { word-break: break-all; }

/* ── Header ───────────────────────────────────────────────────────────── */

header.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  min-height: 52px;
  padding: 8px 24px;
  background: var(--chrome-bg);
  color: var(--chrome-fg);
  border-bottom: 1px solid var(--chrome-line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; font-size: 15px; white-space: nowrap; }
.mark { width: 22px; height: 22px; flex: none; }
.mark rect { fill: var(--chrome-accent); }
.mark path { fill: none; stroke: var(--chrome-bg); stroke-width: 2.2; stroke-linecap: round; }

header nav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; flex: 1 1 auto; min-width: 0; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 10px;
  border-radius: var(--radius);
  color: var(--chrome-muted);
  text-decoration: none;
  font-weight: 550;
}
.nav-links a:hover { color: var(--chrome-fg); background: rgba(255, 255, 255, 0.06); }
.nav-links a[aria-current="page"] { color: var(--chrome-fg); background: rgba(255, 255, 255, 0.1); box-shadow: inset 0 -2px 0 var(--chrome-accent); }
.nav-user { display: flex; align-items: center; gap: 12px; margin-left: auto; min-width: 0; }
.who { color: var(--chrome-muted); font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 36ch; }
header :focus-visible { outline-color: var(--chrome-accent); }

/* ── Layout ───────────────────────────────────────────────────────────── */

main.app { max-width: 1440px; margin: 0 auto; padding: 28px 24px 64px; }

/* Signed-out pages: one centred card. */
main.auth { display: flex; justify-content: center; padding: 10vh 16px 64px; }
.card {
  width: 100%;
  max-width: 440px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.card h1 { font-size: 20px; margin-bottom: 8px; }
.card .lede { margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.card .banner { margin-bottom: 16px; font-size: 14px; }
/* A card's one action, a link styled as a button: full width. */
.card .btn-block { width: 100%; }

/* ── Forms ────────────────────────────────────────────────────────────── */

label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; color: var(--fg); }
input, select {
  width: 100%;
  min-height: 38px;
  padding: 7px 10px;
  font: 400 15px/1.3 var(--font);
  color: var(--fg);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}
input.mono { font-family: var(--mono); font-size: 14px; }
input:hover, select:hover { border-color: var(--muted); }
input:focus, select:focus { outline: 2px solid var(--focus); outline-offset: -1px; border-color: var(--focus); }

form.inline { display: inline; margin: 0; }

/* ── Buttons ──────────────────────────────────────────────────────────── */

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 38px;
  padding: 0 16px;
  font: 600 14px/1 var(--font);
  color: var(--on-accent);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
button:hover, .btn:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-secondary { color: var(--fg); background: var(--surface); border-color: var(--line-strong); }
.btn-secondary:hover { background: var(--surface-2); border-color: var(--muted); }
/* Destructive: outlined in the error colour, never filled, so it never looks like the default. */
.btn-danger { color: var(--error); background: var(--surface); border-color: var(--error-line); }
.btn-danger:hover { background: var(--error-soft); border-color: var(--error); }
.btn-ghost { color: var(--chrome-fg); background: transparent; border-color: var(--chrome-line); min-height: 34px; padding: 0 12px; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: var(--chrome-muted); }
.btn-sm { min-height: 30px; padding: 0 10px; font-size: 13px; }

/* ── Banners ──────────────────────────────────────────────────────────── */

.banner {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 0 0 20px;
  padding: 10px 14px;
  color: var(--fg);
  border: 1px solid;
  border-left-width: 4px;
  border-radius: var(--radius);
}
.banner p { margin: 0; }
.banner svg { width: 18px; height: 18px; flex: none; margin-top: 2px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.banner-note { background: var(--accent-soft); border-color: var(--accent-line); border-left-color: var(--accent); }
.banner-note svg { color: var(--accent); }
.banner-warn { background: var(--warn-soft); border-color: var(--warn-line); border-left-color: var(--warn); }
.banner-warn svg { color: var(--warn); }
.banner-error { background: var(--error-soft); border-color: var(--error-line); border-left-color: var(--error); }
.banner-error svg { color: var(--error); }

/* ── Panels and toolbars ──────────────────────────────────────────────── */

/* Home: the workspace and driver id search. */
form.search {
  display: grid;
  grid-template-columns: minmax(160px, 240px) minmax(200px, 360px) auto;
  gap: 12px;
  align-items: end;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

/* Timeline: the filter bar. */
form.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  margin: 0 0 12px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
form.filters label { flex: 1 1 150px; max-width: 220px; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin: 0 0 16px; font-size: 14px; }

/* One workspace's recent drivers. */
.group { margin: 0 0 20px; }
.group h3 { margin-bottom: 8px; font-family: var(--mono); font-weight: 600; }

.empty {
  margin: 0;
  padding: 16px;
  color: var(--muted);
  font-size: 14px;
  background: var(--surface);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-lg);
}

.pager { margin: 16px 0 0; }

/* ── Tables ───────────────────────────────────────────────────────────── */

/*
  Wide tables scroll sideways inside their own box, never the page. The log
  table's box also has a height, so its header can stay in view while the
  rows scroll under it: sticky needs a scrolling ancestor, and the page is not
  one the header can stick to through an overflow box.
*/
.scroll {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
@media (min-width: 760px) {
  .scroll.tall { max-height: calc(100vh - 220px); min-height: 240px; overflow: auto; }
}

table { border-collapse: separate; border-spacing: 0; width: 100%; font-size: 13.5px; }
th, td { text-align: left; vertical-align: top; padding: 8px 12px; border-bottom: 1px solid var(--line); }
th {
  position: sticky;
  top: 0;
  z-index: 1;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
  background: var(--surface-2);
  border-bottom-color: var(--line-strong);
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(even) { background: var(--zebra); }
tbody tr:hover { background: var(--hover); }

td.time, th.time { white-space: nowrap; font-variant-numeric: tabular-nums; }
td.time { font-family: var(--mono); font-size: 12.5px; }
td.count, th.count { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
td.code a { white-space: nowrap; }

/* The log table. */
table.log td.scope { font-family: var(--mono); font-size: 12.5px; color: var(--muted); white-space: nowrap; }
table.log td.message { min-width: 220px; max-width: 480px; }
table.log td.detail { min-width: 260px; }
table.log tbody tr:has(td.level-error) { background: var(--error-soft); }
table.log tbody tr:has(td.level-error):hover { background: var(--hover); }
pre {
  margin: 0;
  font: 12.5px/1.45 var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
}
.skew { display: block; margin-top: 4px; font-family: var(--font); font-size: 12px; font-weight: 600; color: var(--warn); white-space: nowrap; }

/* ── Pills ────────────────────────────────────────────────────────────── */

/* Level, status and role: the word is the meaning, the colour a second cue. */
.pill, td[class^="level-"] .level {
  display: inline-block;
  padding: 1px 8px;
  font-size: 12px;
  font-weight: 600;
  line-height: 18px;
  white-space: nowrap;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface-2);
}
.pill-ok { color: var(--ok); background: var(--ok-soft); border-color: var(--ok-line); }
.pill-warn, td.level-warn .level { color: var(--warn); background: var(--warn-soft); border-color: var(--warn-line); }
.pill-error, td.level-error .level { color: var(--error); background: var(--error-soft); border-color: var(--error-line); }
.pill-accent, td.level-info .level { color: var(--accent); background: var(--accent-soft); border-color: var(--accent-line); }

.actions { display: flex; flex-wrap: wrap; gap: 6px; }

/* ── Narrow screens ───────────────────────────────────────────────────── */

@media (max-width: 640px) {
  header.topbar { padding: 8px 16px; gap: 8px 16px; }
  .nav-user { margin-left: 0; }
  .who { max-width: 52vw; }
  main.app { padding: 20px 16px 48px; }
  main.auth { padding-top: 32px; }
  .card { padding: 20px; }
  form.search { grid-template-columns: 1fr; }
  form.search button { width: 100%; }
  form.filters label { flex-basis: 100%; max-width: none; }
  form.filters button { width: 100%; }
}