:root {
  --bg: #f6f7f9; --surface: #ffffff; --text: #1d232b; --muted: #5d6773;
  --border: #d9dee4; --accent: #1f5fa8; --accent-soft: #e8f0fa;
  --danger: #a3271f; --danger-soft: #fbeceb;
  --warn: #8a5a00; --warn-soft: #fdf3dc; --ok: #2f6b3a; --ok-soft: #e7f3e9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d; --surface: #1c2229; --text: #e6eaef; --muted: #9aa5b1;
    --border: #2e3640; --accent: #6ea8ec; --accent-soft: #1d2b3c;
    --danger: #f0938b; --danger-soft: #3a2220;
    --warn: #f0c46c; --warn-soft: #3a2f17; --ok: #8fd19a; --ok-soft: #1c3221;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--accent); }
.topbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar nav { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.brand { font-weight: 700; text-decoration: none; color: var(--text); }
.page { max-width: 1100px; margin: 0 auto; padding: 24px 16px; }
.narrow { max-width: 380px; }
h1 { font-size: 1.5rem; margin: 0 0 16px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.tile { display: flex; flex-direction: column; gap: 4px; padding: 16px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--border); text-decoration: none; color: var(--text); }
a.tile:hover { border-color: var(--accent); }
.tile span { color: var(--muted); }
.tile.disabled { opacity: .6; }
.tile em { font-size: .85rem; color: var(--muted); }
form label { display: block; margin-bottom: 12px; }
input[type=text], input[type=password], input[type=search] { display: block; width: 100%; padding: 8px 10px;
  border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); font: inherit; }
button { padding: 8px 16px; border: 0; border-radius: 6px; background: var(--accent); color: #fff; font: inherit; cursor: pointer; }
button.link { background: none; color: var(--accent); padding: 0; }
form.inline { display: inline; }
.searchbar { display: flex; gap: 8px; margin-bottom: 16px; max-width: 520px; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: .9rem; }
tr:last-child td { border-bottom: 0; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--accent-soft); font-size: .85rem; }
.muted { color: var(--muted); }
dl.fields { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 16px; }
dl.fields dt { color: var(--muted); }
dl.fields dd { margin: 0; }
.message { padding: 8px 12px; border-radius: 6px; background: var(--accent-soft); }
.message.error { background: var(--danger-soft); color: var(--danger); }
.pager { display: flex; gap: 12px; margin-top: 12px; align-items: center; }

/* ---- maintenance ---- */
h2 { font-size: 1.15rem; margin: 24px 0 10px; }
.small { font-size: .85rem; }
.num { text-align: right; }
.badge.urgent { background: var(--danger-soft); color: var(--danger); }
.badge.due { background: var(--warn-soft); color: var(--warn); }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-bottom: 8px; }
.stat { display: flex; flex-direction: column; padding: 14px 16px; border-radius: 8px; text-decoration: none;
  background: var(--surface); border: 1px solid var(--border); color: var(--text); }
.stat strong { font-size: 1.6rem; line-height: 1.2; }
.stat em { font-style: normal; font-size: .85rem; color: var(--muted); }
.stat.urgent { border-left: 4px solid var(--danger); }
.stat.due { border-left: 4px solid var(--warn); }
a.stat:hover { box-shadow: 0 0 0 1px var(--accent); }
td.wrap { white-space: normal; min-width: 180px; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 16px 0; }
.tabs a { padding: 8px 14px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; }
.tabs a[aria-current="page"] { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 12px; }
.filters label { margin: 0; font-size: .85rem; color: var(--muted); }
.filters .grow { flex: 1 1 220px; }
select { display: block; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--surface); color: var(--text); font: inherit; }

/* ---- buttons as links, toolbars, upload ---- */
a.button { display: inline-block; padding: 8px 16px; border-radius: 6px; background: var(--accent); color: #fff;
  text-decoration: none; font: inherit; }
a.button.secondary, button.secondary { background: var(--surface); color: var(--accent); border: 1px solid var(--border); }
a.button.secondary:hover, button.secondary:hover { border-color: var(--accent); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin: -4px 0 12px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 16px; }
.panel h2 { margin-top: 0; }
.panel form { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; }
input[type=file] { font: inherit; color: var(--text); max-width: 100%; }
ol.steps { margin: 0 0 12px; padding-left: 20px; }