:root {
  --bg: #f6f5f1; --card: #ffffff; --ink: #1f2328; --muted: #6a6f76; --line: #dedbd2;
  --accent: #1d5c63; --accent-ink: #ffffff; --danger: #a23b2a; --warn-bg: #fdf3dc; --err-bg: #fbe9e6;
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--ink); }
.top { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; align-items: center; justify-content: space-between;
       padding: .8rem 1rem; background: var(--accent); color: var(--accent-ink); }
.top a { color: var(--accent-ink); text-decoration: none; }
.brand { font-weight: 700; }
.top nav { display: flex; flex-wrap: wrap; gap: 1rem; }
.top nav a { opacity: .9; } .top nav a:hover { opacity: 1; text-decoration: underline; }
main { max-width: 960px; margin: 0 auto; padding: 1.2rem 1rem 3rem; }
footer { text-align: center; color: var(--muted); font-size: .85rem; padding: 1rem; }
h1 { font-size: 1.5rem; margin: .3rem 0 1rem; display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
h2 { font-size: 1.1rem; margin: 1.4rem 0 .5rem; }
.card h2:first-child { margin-top: 0; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.pre { white-space: pre-wrap; margin: .2rem 0 .8rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 1rem 1.2rem; margin-bottom: 1rem; }
.card.narrow { max-width: 420px; }
.card.admin { border-color: var(--accent); }
.head-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.flash { background: var(--warn-bg); border: 1px solid #e8d3a0; padding: .8rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.error { background: var(--err-bg); border: 1px solid #e3b4ab; padding: .8rem 1rem; border-radius: 8px; margin-bottom: 1rem; }
.error ul { margin: 0; padding-left: 1.2rem; }

form label { display: block; margin-bottom: .9rem; font-weight: 600; font-size: .95rem; }
input, textarea, select { display: block; width: 100%; margin-top: .3rem; padding: .55rem .65rem; font: inherit;
  font-weight: 400; border: 1px solid #c9c5ba; border-radius: 6px; background: #fff; color: var(--ink); }
input[type=file] { padding: .4rem; }
label.short input { max-width: 8rem; }
label.check { display: flex; gap: .6rem; align-items: flex-start; font-weight: 400; }
label.check input { width: auto; margin-top: .3rem; }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: .6rem .9rem .2rem; margin: 0 0 1rem; }
legend { font-weight: 600; font-size: .95rem; padding: 0 .3rem; }
fieldset textarea { margin-bottom: .8rem; }
.grid2, .grid3 { display: grid; gap: 0 1rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid2 { grid-template-columns: 1fr 1fr; } .grid3 { grid-template-columns: 1fr 1fr 10rem; } }

button, .button { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 6px;
  padding: .6rem 1.1rem; font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
button.secondary { background: #fff; color: var(--accent); border: 1px solid var(--accent); }
button.danger { background: var(--danger); }
button.small { padding: .3rem .6rem; font-size: .85rem; }
form.inline { display: inline-flex; gap: .4rem; align-items: center; margin: 0; }
form.inline input { width: 6rem; margin: 0; padding: .3rem .4rem; }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; }
.actions form { display: flex; gap: .5rem; align-items: center; margin: 0; }
.actions input { margin: 0; min-width: 14rem; }

.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 8px; margin-bottom: 1rem; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: .55rem .7rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
tr:last-child td { border-bottom: 0; }
tr.inactive td { color: var(--muted); text-decoration: line-through; }
td.row-actions { display: flex; gap: .4rem; }

.badge { display: inline-block; font-size: .78rem; font-weight: 600; padding: .15rem .55rem; border-radius: 999px;
  background: #ecebe6; color: #4b4f55; vertical-align: middle; }
.badge-queued { background: #e8eef7; color: #2f4f7a; }
.badge-marking { background: #fdf3dc; color: #7a5a12; }
.badge-review { background: #efe6f7; color: #5d3a7a; }
.badge-ready { background: #e2f1e6; color: #24653a; }
.badge-failed { background: var(--err-bg); color: var(--danger); }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: .25rem 1rem; margin: 0 0 .5rem; }
dl.facts dt { color: var(--muted); } dl.facts dd { margin: 0; }
.filters { display: flex; flex-wrap: wrap; gap: .4rem; }
.filters a { padding: .3rem .7rem; border-radius: 999px; border: 1px solid var(--line); background: #fff; text-decoration: none; font-size: .9rem; }
.filters a.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.count { font-size: .75rem; opacity: .75; margin-left: .2rem; }
code { background: #f0eee8; padding: .1rem .35rem; border-radius: 4px; }

.hint { display: block; font-weight: 400; font-size: .85rem; color: var(--muted); margin-top: .3rem; }
details summary { cursor: pointer; font-weight: 600; margin: .3rem 0; }
ol.files { margin: .3rem 0 0; padding-left: 1.6rem; }

.test-preview { display: block; font-weight: 400; font-size: .9rem; background: #f3f6f6; border-left: 3px solid var(--accent, #1f5f63);
  padding: .45rem .6rem; margin-top: .4rem; line-height: 1.4; }
.test-match { display: block; font-weight: 600; font-size: .9rem; margin-top: .4rem; }
.test-match.ok { color: #1e7b34; } .test-match.bad { color: #b3261e; }

/* Worksheets page */
.ws-filters { display: flex; flex-wrap: wrap; gap: .5rem 1rem; align-items: flex-end; }
.ws-filters label { flex: 1 1 14rem; margin: 0; }
.ws-subject h2 { margin-top: 1.6rem; }
.ws-pack { margin-bottom: 1rem; }
.ws-pack h3 { font-size: 1rem; margin: .8rem 0 .4rem; }
.ws-test { background: var(--card); border: 1px solid var(--line); border-radius: 6px; margin: .35rem 0; }
.ws-test > summary { cursor: pointer; padding: .55rem .8rem; display: flex; flex-wrap: wrap; gap: .3rem .7rem; align-items: baseline; }
.ws-code { font-weight: 700; color: var(--accent); min-width: 3.2rem; }
.ws-title { flex: 1 1 18rem; }
.ws-used { font-size: .8rem; color: var(--muted); }
.ws-body { padding: 0 .9rem .8rem; border-top: 1px solid var(--line); }
.ws-questions { padding-left: 1.4rem; }
.ws-questions li { margin: .5rem 0; }
.ws-material { margin: .4rem 0; }
.ws-material > summary { cursor: pointer; color: var(--accent); font-size: .9rem; }
.ws-source { background: #f6f6f6; border: 1px solid #ddd; border-radius: 4px; padding: .5rem .8rem; margin-top: .3rem; font-size: .92rem; max-height: 28rem; overflow: auto; }
.ws-table { border-collapse: collapse; margin: .5rem 0; font-size: .88rem; }
.ws-table th, .ws-table td { border: 1px solid #ccc; padding: .25rem .5rem; text-align: left; vertical-align: top; }