:root {
  --bg: #f6f4ee;
  --panel: #ffffff;
  --ink: #1d1d1b;
  --muted: #6b6a66;
  --line: #dedbd2;
  --accent: #1f5fbf;
  --accent-ink: #ffffff;
  --ok: #1e7f4f;
  --bad: #b3261e;
  --warn: #9a6700;
  --soft: #eef3fb;
  --radius: 10px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { font-family: var(--font); background: var(--bg); color: var(--ink); line-height: 1.5; font-size: 16px; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 .8em; }
button, .btn {
  font: inherit; cursor: pointer; border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  padding: .5rem .9rem; border-radius: 8px; text-decoration: none; display: inline-block; line-height: 1.2;
}
button:hover { border-color: #b8b4a8; }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.primary:hover { filter: brightness(1.08); }
button.danger { color: var(--bad); border-color: var(--bad); }
button.warn { color: var(--warn); border-color: var(--warn); }
button.small { padding: .25rem .6rem; font-size: .9rem; }
button.link { border: none; background: none; color: var(--accent); padding: 0; text-decoration: underline; }
input, select, textarea { font: inherit; padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); }
input:focus, select:focus, textarea:focus { outline: 2px solid #9ec0f5; outline-offset: 1px; }
textarea { width: 100%; min-height: 6rem; }
label { display: block; font-size: .92rem; color: var(--muted); margin-bottom: .25rem; }
.field { margin-bottom: .9rem; }
.field input[type=text], .field input[type=password], .field input[type=number], .field input[type=url], .field select { width: 100%; }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.row.between { justify-content: space-between; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.tiny { font-size: .8rem; }
.ok { color: var(--ok); }
.bad { color: var(--bad); }
.warnc { color: var(--warn); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; }
.loading { padding: 3rem; text-align: center; color: var(--muted); }
.wrap { max-width: 980px; margin: 0 auto; padding: 1.2rem 16px 4rem; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 16px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.topbar .brand { font-weight: 600; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.1rem; margin-bottom: 1rem; }
.card.soft { background: var(--soft); border-color: #cfdcf3; }
.card h2 { margin-top: 0; }
.list { list-style: none; margin: 0; padding: 0; }
.list li { border-top: 1px solid var(--line); padding: .8rem 0; display: flex; justify-content: space-between; gap: 1rem; align-items: center; flex-wrap: wrap; }
.list li:first-child { border-top: none; }
.badge { display: inline-block; padding: .1rem .55rem; border-radius: 99px; font-size: .78rem; background: #ebe8df; color: var(--muted); white-space: nowrap; }
.badge.new { background: #dfe9fb; color: #1f4fa0; }
.badge.progress { background: #fff1cc; color: #7a5200; }
.badge.done { background: #dcf1e5; color: #14603a; }
.badge.paused { background: #fde2df; color: #8a1f18; }
.tabs { display: flex; gap: .3rem; border-bottom: 1px solid var(--line); margin-bottom: 1rem; flex-wrap: wrap; }
.tabs button { border: none; background: none; border-bottom: 3px solid transparent; border-radius: 0; padding: .5rem .8rem; color: var(--muted); }
.tabs button.active { color: var(--ink); border-bottom-color: var(--accent); font-weight: 600; }
.notice { padding: .7rem .9rem; border-radius: 8px; background: #fff8e1; border: 1px solid #f1dc8f; margin-bottom: 1rem; }
.notice.error { background: #fdecea; border-color: #f3b4ae; }
.notice.success { background: #e7f6ed; border-color: #a9dcbd; }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: .4rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .85rem; color: var(--muted); font-weight: 600; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
pre { background: #f2f0ea; padding: .7rem; border-radius: 8px; overflow: auto; font-size: .85rem; }

/* Exam */
.exam { user-select: none; -webkit-user-select: none; }
.exam .exambar { display: flex; align-items: center; justify-content: space-between; gap: .8rem; padding: .55rem 16px; background: #1d1d1b; color: #fff; position: sticky; top: 0; z-index: 10; flex-wrap: wrap; }
.exam .exambar .timer { font-variant-numeric: tabular-nums; font-size: 1.25rem; font-weight: 600; letter-spacing: .02em; }
.exam .exambar .timer.low { color: #ffb3ad; }
.exam .exambar button { background: #2f2f2c; color: #fff; border-color: #4a4a46; }
.exam .exambar button.primary { background: var(--accent); border-color: var(--accent); }
.exam .exambar button.stop { background: #6d3b00; border-color: #8a4b00; }
.exam .tasknav { display: flex; gap: .3rem; flex-wrap: wrap; }
.exam .tasknav button { padding: .3rem .6rem; }
.exam .tasknav button.active { background: #fff; color: #1d1d1b; }
.exam .body { max-width: 900px; margin: 0 auto; padding: 1.2rem 16px 6rem; }
.task { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem 1.3rem; margin-bottom: 1.2rem; }
.task .head { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; flex-wrap: wrap; }
.task .instructions { font-weight: 600; margin-bottom: 1rem; }
.task .passage { font-family: var(--serif); font-size: 1.04rem; line-height: 1.6; background: #fbfaf6; border: 1px solid #ece9df; border-radius: 8px; padding: 1rem 1.1rem; margin: .8rem 0 1rem; }
.task .passage h3 { text-align: center; font-family: var(--font); letter-spacing: .04em; }
.task .passage p { margin: 0 0 .9em; text-align: justify; }
.task .passage .plabel { font-weight: 700; font-family: var(--font); margin-right: .4em; }
.task .passage .gapmark { display: inline-block; font-family: var(--font); font-weight: 700; background: #fff1cc; padding: 0 .35em; border-radius: 4px; margin: 0 .15em; }
.task .passage select.inline { font-size: .95rem; padding: .15rem .3rem; margin: 0 .2em; vertical-align: baseline; }
.task .passage input.inline { font-size: .95rem; padding: .15rem .4rem; margin: 0 .2em; min-width: 12rem; }
.task .gaplines { line-height: 2; }
.task .gaplines .line { margin: 0 0 .25em; }
.task .gaplines input.inline { font-size: .95rem; padding: .15rem .4rem; margin: 0 .2em; min-width: 14rem; }
.task .bank { display: flex; gap: .5rem .9rem; flex-wrap: wrap; border: 1px solid var(--line); padding: .5rem .8rem; border-radius: 8px; margin-bottom: 1rem; font-weight: 600; }
.task .item { margin: 1rem 0; padding-top: .8rem; border-top: 1px dashed var(--line); }
.task .item:first-of-type { border-top: none; }
.task .item .stem { font-weight: 600; margin-bottom: .4rem; }
.task .item .group { font-weight: 700; color: var(--muted); margin: 1rem 0 .2rem; }
.task .options { display: grid; gap: .25rem; }
.task .options label { display: flex; gap: .55rem; align-items: flex-start; padding: .35rem .5rem; border-radius: 6px; cursor: pointer; color: var(--ink); font-size: 1rem; }
.task .options label:hover { background: #f2f0ea; }
.task .options label.chosen { background: #e6effc; }
.task .options label.correct { background: #dcf1e5; }
.task .options label.wrong { background: #fde2df; }
.task .options input[type=radio] { margin-top: .3rem; }
.task .optlist { margin: .5rem 0 1rem; padding: .6rem .9rem; border: 1px solid var(--line); border-radius: 8px; }
.task .optlist div { padding: .15rem 0; }
.task .optlist b { display: inline-block; min-width: 1.6em; }
.task .matchrow { display: flex; gap: .8rem; align-items: flex-start; padding: .4rem 0; }
.task .matchrow .id { font-weight: 700; min-width: 2.6em; }
.task .matchrow select { min-width: 5rem; }
.task .matchrow .txt { flex: 1; }
.task .review { margin-top: .4rem; font-size: .92rem; }
.task .review .given { padding: .2rem .5rem; border-radius: 6px; display: inline-block; }
.task .review .given.ok { background: #dcf1e5; }
.task .review .given.bad { background: #fde2df; }
.task .review .given.review { background: #fff1cc; }
.task .transcript { margin-top: 1rem; }
.task .transcript summary { cursor: pointer; font-weight: 600; }
.task .transcript .seg { margin: .6rem 0; padding: .6rem .8rem; background: #fbfaf6; border-radius: 8px; white-space: pre-wrap; font-family: var(--serif); }
.player { position: sticky; top: 3.4rem; z-index: 4; background: #fff8e1; border: 1px solid #f1dc8f; border-radius: 10px; padding: .7rem 1rem; margin-bottom: 1rem; display: flex; justify-content: space-between; gap: 1rem; align-items: center; flex-wrap: wrap; }
.player .phase { font-weight: 600; }
.player .count { font-variant-numeric: tabular-nums; font-size: 1.2rem; }
.player .bar { height: 6px; background: #f1dc8f; border-radius: 3px; overflow: hidden; width: 100%; }
.player .bar > div { height: 100%; background: #9a6700; transition: width .3s linear; }
.overlay { position: fixed; inset: 0; background: #14140f; color: #fff; z-index: 100; display: flex; align-items: center; justify-content: center; padding: 2rem; text-align: center; }
.overlay .box { max-width: 520px; }
.overlay h1 { font-size: 2rem; }
.overlay button { font-size: 1.1rem; padding: .8rem 1.4rem; }
.overlay .muted { color: #c9c7be; }
.pill { display: inline-block; padding: .15rem .6rem; border-radius: 99px; background: #eee; font-size: .85rem; }
.scorebig { font-size: 2.4rem; font-weight: 700; }
.events { font-size: .88rem; }
.events li { padding: .15rem 0; }
.feedback h3 { margin-top: 1rem; }
.feedback ul { margin: .3rem 0 .8rem 1.2rem; padding: 0; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: .2rem 1rem; font-size: .92rem; }
.recorder .seg { border-top: 1px solid var(--line); padding: .8rem 0; }
.recorder .seg .tr { white-space: pre-wrap; font-family: var(--serif); background: #fbfaf6; padding: .5rem .7rem; border-radius: 8px; margin: .4rem 0; max-height: 9rem; overflow: auto; }
.recorder .rec { color: #b3261e; font-weight: 700; }
.jsonbox { width: 100%; min-height: 16rem; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .85rem; }
@media print { body { display: none !important; } }
@media (max-width: 640px) {
  .exam .exambar { padding: .5rem 12px; }
  .task { padding: 1rem; }
  .task .matchrow { flex-wrap: wrap; }
}