:root {
  --bg: #f4f6f9; --card: #fff; --text: #1d2733; --muted: #667384; --line: #dde3ea;
  --accent: #1f4e79; --accent-text: #fff; --accent-soft: #e6eef7; --danger: #b3261e; --danger-soft: #fdecea;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181d; --card: #1d232a; --text: #e6eaef; --muted: #98a3b0; --line: #2d3641;
    --accent: #5b9bd5; --accent-text: #0c1116; --accent-soft: #24313f; --danger: #f2877f; --danger-soft: #3a2220;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, "Segoe UI", Roboto, sans-serif; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.5rem; margin: 0 0 .25rem; }
h2 { font-size: 1.15rem; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: .85em; }
.nowrap { white-space: nowrap; }

.topbar { display: flex; align-items: center; gap: 24px; padding: 0 16px; height: 52px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.brand span { color: var(--accent); font-weight: 500; }
.topbar nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topbar nav a { padding: 6px 12px; border-radius: 6px; color: var(--muted); text-decoration: none; white-space: nowrap; }
.topbar nav a:hover, .topbar nav a[aria-current] { background: var(--accent-soft); color: var(--accent); }
.userbox { display: flex; gap: 10px; align-items: center; margin-left: auto; color: var(--muted); }
button.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }
button.link:hover { text-decoration: underline; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin-top: 16px; }
.tile { display: block; color: inherit; text-decoration: none; }
.tile:hover { border-color: var(--accent); }
.tile p { margin: .4rem 0 0; }

input { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; width: 100%; }
input:focus-visible, button:focus-visible, a:focus-visible, th:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: 4px; }
button.primary, a.button { display: inline-block; font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; padding: 9px 18px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text); }
a.button { background: transparent; color: var(--accent); white-space: nowrap; }
button.primary:hover { filter: brightness(1.1); }
a.button:hover { background: var(--accent-soft); }

.login { max-width: 380px; margin: 8vh auto 0; }
.login form { display: grid; gap: 14px; margin-top: 14px; }
.alert { background: var(--danger-soft); color: var(--danger); border-radius: 6px; padding: 8px 12px; margin: 12px 0 0; }

.searchbar { display: flex; gap: 12px; align-items: flex-end; margin: 16px 0 8px; flex-wrap: wrap; }
.field { position: relative; }
.field.code { flex: 1 1 280px; }
.field.rev { flex: 0 0 120px; }
.field.cli { flex: 1 1 260px; }
.field.cli .suggest { right: auto; }
.check { display: flex; align-items: center; gap: 6px; height: 38px; margin: 0; white-space: nowrap; color: var(--text); font-size: .95rem; }
.check input { width: auto; }
.searchbar button { height: 38px; padding-block: 0; }
.suggest { position: absolute; z-index: 10; left: 0; right: 0; top: 100%; margin: 4px 0 0; padding: 4px; list-style: none; background: var(--card); border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 8px 24px rgb(0 0 0 / .15); max-height: 320px; overflow-y: auto; min-width: min(560px, 90vw); }
.field.rev .suggest { left: auto; right: 0; }
.suggest li { padding: 6px 8px; border-radius: 5px; cursor: pointer; display: grid; grid-template-columns: auto auto 1fr; gap: 4px 12px; align-items: baseline; }
.suggest li[aria-selected="true"], .suggest li:hover { background: var(--accent-soft); }
.suggest .rev { color: var(--muted); font-size: .85em; white-space: nowrap; }
.suggest .desc { color: var(--muted); font-size: .9em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

#status { min-height: 1.5em; margin: 8px 2px; }
.resulthead { display: flex; justify-content: space-between; gap: 16px; align-items: flex-end; flex-wrap: wrap; margin-top: 12px; }
.resulthead p { margin: 2px 0 0; }
.actions { display: flex; gap: 10px; align-items: center; }
.actions input { width: 220px; }
.summary { margin: 12px 0 8px; font-weight: 600; }
.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--card); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
tbody tr:last-child td { border-bottom: 0; }
thead th { position: sticky; top: 0; background: var(--card); font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); cursor: pointer; user-select: none; white-space: nowrap; }
thead th[aria-sort="ascending"]::after { content: " ▲"; }
thead th[aria-sort="descending"]::after { content: " ▼"; }
tbody tr:hover { background: var(--accent-soft); }
.num { text-align: right; font-variant-numeric: tabular-nums; }

table.bom thead th { cursor: default; }
table.bom td.code { font-variant-numeric: tabular-nums; }
table.bom tr.deriv td { font-weight: 600; background: var(--accent-soft); }
table.bom tr.dett td { color: var(--muted); font-size: .9em; }
table.bom tr.dett td.code { font-style: italic; }
table.bom td.code[data-lv="1"]  { padding-left: 12px; }
table.bom td.code[data-lv="2"]  { padding-left: 28px; }
table.bom td.code[data-lv="3"]  { padding-left: 44px; }
table.bom td.code[data-lv="4"]  { padding-left: 60px; }
table.bom td.code[data-lv="5"]  { padding-left: 76px; }
table.bom td.code[data-lv="6"]  { padding-left: 92px; }
table.bom td.code[data-lv="7"]  { padding-left: 108px; }
table.bom td.code[data-lv="8"]  { padding-left: 124px; }
table.bom td.code[data-lv="9"]  { padding-left: 140px; }
table.bom td.code[data-lv="10"] { padding-left: 156px; }
table.bom td.code[data-lv="11"] { padding-left: 172px; }
table.bom td.code[data-lv="12"] { padding-left: 188px; }

@media (max-width: 640px) {
  .topbar { gap: 12px; }
  .actions { width: 100%; }
  .actions input { flex: 1; width: auto; }
  .field.rev { flex: 1 1 100px; }
}