:root {
  --bg: #f4f6f9; --card: #fff; --ink: #1f2733; --muted: #6b7686;
  --line: #e4e8ee; --brand: #0a6cff; --brand-d: #0850c4;
  --ok: #15924b; --danger: #c8372d; --chip: #eef2f8;
  --abt-bg: #eef2f8; --proj-bg: #f7f9fc; --hover: #f3f7ff;
  --proj-line: #c3ccd9;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg); color: var(--ink); font-size: 14px; }
header { background: var(--card); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 12px; padding: 12px 20px; position: sticky; top: 0; z-index: 5; }
header h1 { font-size: 16px; margin: 0; font-weight: 650; }
header .sub { color: var(--muted); font-size: 12px; }
header .spacer, .toolbar .spacer { flex: 1; }
header .user { color: var(--muted); font-size: 12px; }
button { font: inherit; cursor: pointer; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); border-radius: 8px; padding: 7px 12px; }
button.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
button.primary:hover { background: var(--brand-d); }
button.link { border: none; background: none; color: var(--brand); padding: 2px 6px; font-size: 13px; }
button.link.mut { color: var(--muted); }
button.link:hover { text-decoration: underline; }
main { max-width: 1060px; margin: 0 auto; padding: 20px; }
nav.tabs { display: flex; gap: 4px; margin-bottom: 16px; }
nav.tabs button { border: none; background: none; color: var(--muted); border-radius: 0;
  padding: 8px 14px; border-bottom: 2px solid transparent; }
nav.tabs button.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; margin-bottom: 16px; }
.card h2 { font-size: 14px; margin: 0 0 4px; }
.hint { color: var(--muted); margin: 0 0 12px; font-size: 12.5px; line-height: 1.5; }
.toolbar { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
select, input[type=text], input[type=number] {
  font: inherit; padding: 5px 8px; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
input#project-filter, input#queue-filter { width: 280px; }
input[type=number] { width: 64px; text-align: right; }

/* ---- grid ---- */
table.grid { width: 100%; border-collapse: collapse; }
table.grid th { text-align: left; padding: 6px 10px; color: var(--muted); font-weight: 600;
  font-size: 11px; text-transform: uppercase; letter-spacing: .04em; border-bottom: 1px solid var(--line); }
table.grid th.num { text-align: right; }
table.grid td { padding: 5px 10px; border-bottom: 1px solid #f0f2f6; vertical-align: middle; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
td.nowrap { white-space: nowrap; }

/* group header rows */
tr.grp { user-select: none; }
.treetoggle { cursor: pointer; }
.treetoggle:hover { opacity: .8; }
tr.grp-abt td { background: var(--abt-bg); font-size: 13px; padding: 7px 10px;
  border-top: 1px solid var(--line); }
tr.grp-abt b { font-size: 13px; text-transform: uppercase; letter-spacing: .03em; }
tr.grp-proj td { background: var(--proj-bg); border-left: 2px solid var(--proj-line); }
.chev { display: inline-block; width: 16px; color: var(--muted); font-size: 11px; }

/* indentation per level */
td.lvl1 { padding-left: 28px; font-weight: 600; }
tr.grp-proj td .lvl1 { font-weight: 600; }
td.lvl2 { padding-left: 46px; }
tr.leaf:hover td { background: var(--hover); }
tr.leaf td { border-left: 2px solid transparent; }

/* badges / chips */
.badge { display: inline-block; background: #fff; border: 1px solid var(--line); color: var(--muted);
  border-radius: 999px; padding: 1px 8px; font-size: 11px; margin-left: 8px; }
.badge.ok { color: var(--ok); border-color: #bfe6cd; background: #f1faf4; }
.tag { background: var(--chip); border-radius: 6px; padding: 1px 8px; font-size: 11.5px; color: var(--muted); }
.qlabel { font-size: 13px; }
.pct { color: var(--muted); margin: 0 4px 0 2px; }
.muted { color: var(--muted); font-size: 12px; }
small.meta { color: var(--muted); font-size: 11.5px; }

/* language badges */
.lang { display: inline-flex; align-items: center; justify-content: center; min-width: 22px; height: 20px;
  border-radius: 6px; font-size: 11px; font-weight: 700; color: #fff; margin-right: 8px; }
.lang-D { background: #2563eb; } .lang-F { background: #15924b; }
.lang-I { background: #d97706; } .lang-E { background: #7c3aed; }
.lang { background: #64748b; }   /* fallback */

/* states */
.banner { padding: 12px 14px; border-radius: 10px; margin-bottom: 14px; font-size: 13px; }
.banner.ro { background: #fff7e6; border: 1px solid #ffe2ad; color: #6b4e00; }
#toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: #1f2733; color: #fff; padding: 10px 16px; border-radius: 10px; opacity: 0;
  transition: opacity .2s; pointer-events: none; z-index: 20; max-width: 90vw; }
#toast.show { opacity: 1; } #toast.err { background: var(--danger); }
.center { text-align: center; padding: 60px 20px; }
.center h2 { margin: 0 0 8px; }
.hidden { display: none !important; }