:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2430;
  --muted: #5f6b7a;
  --border: #dde2e8;
  --accent: #1f6feb;
  --accent-text: #ffffff;
  --error: #c62828;
  --row-alt: #f9fafb;
  --hover: #eef3fb;
  --warn: #b45309;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --surface: #1b2129;
    --text: #e6e9ee;
    --muted: #9aa5b3;
    --border: #2d3540;
    --accent: #4c8dff;
    --accent-text: #0b1220;
    --error: #ff6b6b;
    --row-alt: #1f262f;
    --hover: #243042;
    --warn: #f0a24a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

[hidden] { display: none !important; }

h1 { font-size: 1.35rem; margin: 0 0 16px; }

button {
  font: inherit;
  padding: 8px 14px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}
button:disabled { opacity: .6; cursor: default; }
button.link { background: none; color: var(--accent); padding: 4px 6px; }

input, select, textarea {
  font: inherit;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
}

.error { color: var(--error); min-height: 1.2em; }
.muted { color: var(--muted); }

/* ---- Login ---- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 24px;
  display: grid;
  gap: 14px;
}
.card label { display: grid; gap: 4px; color: var(--muted); font-size: .9rem; }
.card input { color: var(--text); font-size: 1rem; }

/* ---- Shell ---- */
.app {
  display: grid;
  grid-template-columns: 220px 1fr;
  grid-template-rows: auto 1fr;
  min-height: 100vh;
}
.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 600; }
.spacer { flex: 1; }
.who { color: var(--muted); }
.menu-toggle { display: none; background: none; color: var(--text); font-size: 1.2rem; padding: 2px 8px; }

.nav {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav a {
  color: var(--text);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 6px;
}
.nav a:hover { background: var(--row-alt); }
.nav a.active { background: var(--accent); color: var(--accent-text); }

.page { padding: 20px 24px; min-width: 0; }

.toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 12px; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
tbody tr:nth-child(even) { background: var(--row-alt); }
td.nowrap { white-space: nowrap; }
td.details { font-family: ui-monospace, Consolas, monospace; font-size: .8rem; word-break: break-word; max-width: 420px; }

h2 { font-size: 1.1rem; margin: 0 0 12px; }
h3 { font-size: 1rem; margin: 16px 0 8px; }
.small { font-size: .85rem; }
button.small { padding: 4px 10px; font-size: .85rem; margin-right: 6px; }
a.button { display: inline-block; text-decoration: none; padding: 4px 10px; border-radius: 6px; background: var(--accent); color: var(--accent-text); margin-right: 6px; font-size: .85rem; }
button.secondary { background: var(--row-alt); color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--error); color: #fff; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
}
.panel .table-wrap { border-radius: 6px; }
.notice { border-color: var(--accent); }
.form-grid { display: grid; gap: 10px; max-width: 560px; }
.form-grid label { display: grid; gap: 4px; color: var(--muted); font-size: .9rem; }
.form-grid label > input, .form-grid label > select { color: var(--text); }
.actions { display: flex; align-items: center; gap: 10px; }
.inline { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.check { display: inline-flex !important; align-items: center; gap: 4px; color: var(--text); }
input.key { flex: 1; min-width: 0; font-family: ui-monospace, Consolas, monospace; }
.back { display: inline-block; margin-bottom: 8px; color: var(--accent); text-decoration: none; }

.badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: .78rem;
  background: var(--row-alt);
  border: 1px solid var(--border);
}
.badge.warn { color: var(--warn); border-color: var(--warn); }
tr.clickable { cursor: pointer; }
tr.clickable:hover { background: var(--hover); }
tr.dim td { color: var(--muted); }
td.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
td.mono { font-family: ui-monospace, Consolas, monospace; }
td.question { min-width: 220px; max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font: .82rem/1.45 ui-monospace, Consolas, monospace;
  max-height: 480px;
  overflow: auto;
}
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; word-break: break-word; }
.card-head { color: var(--muted); font-size: .85rem; margin-bottom: 6px; }
.card-head a { color: var(--accent); }
.question-text { font-weight: 600; margin: 4px 0 8px; }
.panel p { margin: 6px 0; }
.panel .actions input { flex: 1; min-width: 0; }
details summary { cursor: pointer; color: var(--accent); margin: 6px 0; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; }
.tile-label { color: var(--muted); font-size: .85rem; }
.tile-value { font-size: 1.4rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.tile-sub { color: var(--muted); font-size: .8rem; }

.chart { position: relative; width: 100%; min-height: 220px; }
.chart svg { display: block; }
.chart .bar { fill: var(--accent); }
.chart .grid { stroke: var(--border); stroke-width: 1; }
.chart .axis { stroke: var(--muted); stroke-width: 1; }
.chart .tick { fill: var(--muted); font-size: 11px; }
.chart .hit { fill: transparent; }
.chart .hit:hover { fill: var(--hover); fill-opacity: .5; }
.chart-tip {
  position: absolute;
  pointer-events: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: .85rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .15);
  white-space: nowrap;
}

.form-grid.wide { max-width: 900px; }
textarea { width: 100%; resize: vertical; font: .9rem/1.5 ui-monospace, Consolas, monospace; color: var(--text); }
input[readonly] { background: var(--row-alt); color: var(--muted); }
.version { border-top: 1px solid var(--border); padding: 10px 0; }
.version pre { margin-top: 8px; }
pre.diff { margin-top: 8px; }
.diff-add { background: rgba(46, 160, 67, .18); }
.diff-del { background: rgba(248, 81, 73, .18); text-decoration: line-through; text-decoration-color: rgba(248, 81, 73, .6); }
ins { background: rgba(46, 160, 67, .18); text-decoration: none; }
del { background: rgba(248, 81, 73, .18); }
details.panel > summary { font-weight: 600; }

input.narrow { width: 140px; }
.meter { display: inline-block; vertical-align: middle; width: 90px; height: 8px; border-radius: 4px; background: var(--row-alt); border: 1px solid var(--border); overflow: hidden; }
.meter-fill { height: 100%; width: 0; background: var(--accent); }
.meter-fill.high { background: var(--warn); }
.meter-fill.full { background: var(--error); }

@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .menu-toggle { display: inline-block; }
  .nav { display: none; border-right: 0; border-bottom: 1px solid var(--border); }
  .nav.open { display: flex; }
  .page { padding: 16px; }
}