:root {
  --bg: #f4f6f9; --card: #ffffff; --ink: #1c2431; --muted: #6b7686;
  --line: #e2e7ee; --brand: #305496; --brand-ink: #ffffff;
  --ok: #1c7c3f; --run: #b06a00; --err: #b0233a; --flag: #b06a00;
  --flagbg: #ffe699;
}
* { box-sizing: border-box; }
body {
  margin: 0; font: 15px/1.5 -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg); color: var(--ink);
}
header {
  display: flex; align-items: baseline; gap: 14px;
  padding: 16px 28px; background: var(--brand); color: var(--brand-ink);
}
.brand { color: #fff; font-weight: 700; font-size: 20px; text-decoration: none; letter-spacing: .3px; }
.tag { color: #cdd8ee; font-size: 13px; }
.auth { margin-left: auto; display: inline-flex; align-items: center; gap: 12px; font-size: 13px; }
.auth .who { color: #cdd8ee; }
.auth a { color: #fff; text-decoration: none; border: 1px solid rgba(255,255,255,.4); padding: 4px 11px; border-radius: 6px; }
.auth a:hover { background: rgba(255,255,255,.12); }
.auth .credits { background: rgba(255,255,255,.16); border-color: transparent; font-weight: 600; }

.notice { border-radius: 8px; padding: 11px 14px; margin: 12px 0; font-size: 14px; }
.notice.ok { background: #e2f5e9; color: var(--ok); border: 1px solid #b6e3c6; }
.notice.warn { background: #fff4e0; color: #7a4f10; border: 1px solid #f2cf92; }
.credits-card { max-width: 880px; }
.balance-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; margin: 12px 0 4px; }
.balance { font-size: 15px; }
.balance b { font-size: 32px; color: var(--brand); }
.packs { display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0 10px; }
.pack {
  flex: 1 1 140px; max-width: 175px; text-align: center; background: #fbfcfe;
  border: 1px solid var(--line); border-radius: 12px; padding: 18px 14px 16px;
  transition: box-shadow .15s ease, transform .15s ease;
}
.pack:hover { box-shadow: 0 6px 18px rgba(20,30,50,.10); transform: translateY(-2px); }
.pack-credits { font-size: 30px; font-weight: 800; color: var(--ink); line-height: 1; }
.pack-label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 12px; }
.pack-price { font-size: 20px; font-weight: 700; color: var(--brand); }
.pack-each { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
.pack button { width: 100%; padding: 9px 0; }
.signin-cta { padding: 18px 0 4px; }
.signin-cta p { color: var(--muted); margin: 0 0 14px; }
main { max-width: 1080px; margin: 26px auto; padding: 0 20px; }
footer { max-width: 1080px; margin: 30px auto; padding: 0 20px; color: var(--muted); font-size: 12px; }

.grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; align-items: start; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 22px 24px; box-shadow: 0 1px 2px rgba(20,30,50,.04);
}
h1 { margin: 0 0 16px; font-size: 22px; }
h2 { margin: 0 0 12px; font-size: 17px; }

.field { display: block; margin: 0 0 16px; }
.field > span { display: block; font-weight: 600; margin-bottom: 6px; }
.field small { color: var(--muted); font-weight: 400; }
input[type=file], input[type=number], select, textarea {
  width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink);
}
textarea { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; resize: vertical; }
.row { display: flex; gap: 16px; }
.row .field { flex: 1; }
.checks { margin-bottom: 8px; }
.check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.check input { width: auto; }
.hint { color: var(--muted); font-size: 13px; margin: 4px 0 18px; }
code { background: #eef1f6; padding: 1px 5px; border-radius: 4px; font-size: 12.5px; }

button, .button {
  display: inline-block; background: var(--brand); color: #fff; border: 0; cursor: pointer;
  padding: 11px 20px; border-radius: 8px; font: inherit; font-weight: 600; text-decoration: none;
}
button:hover, .button:hover { filter: brightness(1.08); }

table.jobs { width: 100%; border-collapse: collapse; font-size: 14px; }
.jobs th, .jobs td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: top; }
.jobs th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.muted { color: var(--muted); }
.flag { color: var(--flag); font-weight: 600; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 600; text-transform: capitalize; }
.badge.queued { background: #eef1f6; color: var(--muted); }
.badge.running { background: #fff1dc; color: var(--run); }
.badge.done { background: #e2f5e9; color: var(--ok); }
.badge.error { background: #fbe4e8; color: var(--err); }

.stats { display: flex; gap: 26px; margin: 18px 0; flex-wrap: wrap; }
.stats div { display: flex; flex-direction: column; }
.stats b { font-size: 26px; }
.stats span { color: var(--muted); font-size: 12px; }

.errbox { background: #fbe4e8; border: 1px solid #f3b8c3; border-radius: 8px; padding: 12px 14px; margin: 12px 0; }
.errbox pre { white-space: pre-wrap; margin: 6px 0 0; font-size: 12px; color: #7a1526; }

/* rubric builder */
.sub { display: block; font-weight: 500; margin: 10px 0 4px; font-size: 13.5px; }
.sub input[type=text], .sub input[type=file] { margin-top: 5px; }
.small { font-size: 12.5px; }
#questions { margin: 12px 0 8px; }
.qrow { border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; margin-bottom: 9px; background: #fbfcfe; }
.qhead { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.qlabel { font-weight: 700; color: var(--brand); min-width: 26px; }
.qmax { width: 74px; }
.unit { color: var(--muted); font-size: 13px; margin-left: -4px; }
.qhead .check { margin-left: 4px; }
.qcrit { width: 100%; margin-top: 9px; font-size: 13px; }
.qdel { margin-left: auto; background: transparent; color: var(--muted); border: 1px solid var(--line);
        padding: 2px 9px; border-radius: 6px; font-size: 16px; line-height: 1; }
.qdel:hover { background: #fbe4e8; color: var(--err); border-color: #f3b8c3; filter: none; }
button.ghost { background: #eef1f6; color: var(--brand); font-weight: 600; padding: 8px 14px; }
button.ghost:hover { background: #e2e8f2; filter: none; }

details.advanced { margin: 14px 0 4px; border-top: 1px dashed var(--line); padding-top: 12px; }
details.advanced > summary { cursor: pointer; font-weight: 600; color: var(--brand); font-size: 13.5px; list-style: revert; }
details.advanced[open] > summary { margin-bottom: 8px; }
details.advanced textarea { width: 100%; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; }

/* rubric mode selector */
.modes { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 12px; }
.modes label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  border: 1px solid var(--line); border-radius: 20px; padding: 5px 13px; font-size: 13px; font-weight: 500; }
.modes label:has(input:checked) { border-color: var(--brand); background: #eef2fb; color: var(--brand); font-weight: 600; }
.panel { margin-top: 4px; }
.panel > textarea { width: 100%; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; }

.warnbox { background: #fff4e0; border: 1px solid #f2cf92; border-radius: 8px; padding: 11px 13px; font-size: 13px; color: #7a4f10; }
button.tiny { padding: 3px 9px; font-size: 12px; }

/* sub-parts */
.subs { margin: 8px 0 2px 22px; border-left: 2px solid var(--line); padding-left: 12px; }
.subrow { padding: 6px 0; }
.subhead { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.sublabel { font-weight: 600; color: var(--muted); min-width: 26px; }
.submax { width: 66px; }
.subcrit { width: 100%; margin-top: 7px; font-size: 12.5px; }
.subdel { margin-left: auto; background: transparent; color: var(--muted); border: 1px solid var(--line);
  padding: 1px 8px; border-radius: 6px; font-size: 14px; line-height: 1; }
.subdel:hover { background: #fbe4e8; color: var(--err); filter: none; }