@font-face{font-family:'Lora';font-style:normal;font-weight:500;font-display:swap;src:url(../vendor/fonts/lora-latin-500-normal.woff2) format('woff2');}
@font-face{font-family:'Lora';font-style:normal;font-weight:600;font-display:swap;src:url(../vendor/fonts/lora-latin-600-normal.woff2) format('woff2');}
@font-face{font-family:'Lora';font-style:normal;font-weight:700;font-display:swap;src:url(../vendor/fonts/lora-latin-700-normal.woff2) format('woff2');}
@font-face{font-family:'Lora';font-style:italic;font-weight:500;font-display:swap;src:url(../vendor/fonts/lora-latin-500-italic.woff2) format('woff2');}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;src:url(../vendor/fonts/ibm-plex-sans-latin-400-normal.woff2) format('woff2');}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;src:url(../vendor/fonts/ibm-plex-sans-latin-500-normal.woff2) format('woff2');}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;src:url(../vendor/fonts/ibm-plex-sans-latin-600-normal.woff2) format('woff2');}
@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:700;font-display:swap;src:url(../vendor/fonts/ibm-plex-sans-latin-700-normal.woff2) format('woff2');}

:root{
  --ink:#121a2b; --ink-2:#1b2538; --ink-3:#242f46;
  --parchment:#eee8d7; --parchment-dim:#ddd5bd;
  --gold:#c7a248; --gold-dim:#8f7639;
  --crimson:#9a3140; --crimson-dim:#6e232e;
  --green:#2f6f52; --green-dim:#214f3a;
  --muted:#8c93a8; --line:#2d3a56;
  /* semantic (dark is the default, as in the original game) */
  --bg:var(--ink); --surface:var(--ink-2); --surface-2:var(--ink-3);
  --text:var(--parchment); --text-dim:var(--parchment-dim);
  --accent:var(--gold); --accent-text:var(--gold); --on-accent:var(--ink);
  --bar-track:#2a3550; --chart-a:#c7a248; --chart-b:#6fb3d6; --chart-bad:#d9707f; --chart-grid:#33405e;
  color-scheme: dark;
  --radius: 14px;
}
:root[data-theme="light"]{
  --bg:#f4efe0; --surface:#fffdf6; --surface-2:#ebe3ca;
  --text:#121a2b; --text-dim:#33405e; --muted:#566079; --line:#cfc6aa;
  --accent:#c7a248; --accent-text:#6f5614; --on-accent:#121a2b;
  --bar-track:#ddd4b8; --chart-a:#8f6f1b; --chart-b:#1f6a96; --chart-bad:#a3283b; --chart-grid:#cfc6aa;
  color-scheme: light;
}
*{box-sizing:border-box;}
html,body{min-height:100%;}
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
  overflow-x:hidden;
}
h1,h2,h3,.serif{font-family:'Lora',Georgia,serif;}
h2{font-size:1.25rem;margin:26px 0 12px;font-weight:600;}
h3{font-size:1.05rem;margin:18px 0 8px;font-weight:600;}
a{color:var(--accent-text);}
.wrap{max-width:860px;margin:0 auto;padding:20px 16px 60px;}
.topline{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px;}
.brand{display:flex;align-items:center;gap:10px;font-family:'Lora',serif;font-weight:600;font-size:1.05rem;letter-spacing:.2px;}
.brand .mark{width:30px;height:30px;border-radius:50%;background:var(--gold);color:var(--ink);display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0;}
.hairline{height:1px;background:linear-gradient(90deg,var(--gold) 0%,transparent 70%);margin:14px 0 18px;}
.iconbtn{background:transparent;border:1px solid var(--line);color:var(--text);border-radius:999px;padding:6px 12px;font:inherit;font-size:.8rem;cursor:pointer;}
.nav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px;}
.nav a{padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--text-dim);text-decoration:none;font-size:.85rem;}
.nav a[aria-current="page"]{background:var(--gold);border-color:var(--gold);color:var(--ink);font-weight:600;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

.hero h1{font-size:clamp(1.8rem,5vw,2.6rem);line-height:1.12;margin:4px 0 10px;font-weight:600;}
.hero p{color:var(--muted);max-width:56ch;margin:0 0 22px;line-height:1.55;font-size:.98rem;}
.field-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin:0 0 8px;display:block;}
.section{margin-bottom:22px;}
.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;}
.course-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;cursor:pointer;text-align:left;color:inherit;font:inherit;display:flex;flex-direction:column;gap:4px;}
.course-card:hover{border-color:var(--gold-dim);}
.course-card[aria-pressed="true"]{border-color:var(--gold);background:var(--surface-2);box-shadow:inset 0 0 0 1px var(--gold);}
.course-card .t{font-family:'Lora',serif;font-weight:600;font-size:1rem;}
.course-card .cnt{font-size:.78rem;color:var(--accent-text);}
.pill-group{display:flex;gap:8px;flex-wrap:wrap;}
.pill{background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:9px 16px;cursor:pointer;font-size:.85rem;color:var(--text-dim);font-family:inherit;}
.pill[aria-pressed="true"],.pill.active{background:var(--gold);border-color:var(--gold);color:var(--ink);font-weight:600;}
.pill:disabled{opacity:.4;cursor:not-allowed;}
.switch{display:inline-flex;align-items:center;gap:10px;cursor:pointer;font-size:.92rem;}
.switch input{position:absolute;opacity:0;width:1px;height:1px;}
.switch .track{width:44px;height:26px;border-radius:999px;background:var(--bar-track);position:relative;transition:background .15s;flex-shrink:0;}
.switch .track::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:var(--text);transition:transform .15s;}
.switch input:checked + .track{background:var(--gold);}
.switch input:checked + .track::after{transform:translateX(18px);background:var(--ink);}
.switch input:focus-visible + .track{outline:2px solid var(--accent);outline-offset:2px;}
.hint{font-size:.82rem;color:var(--muted);line-height:1.45;margin:6px 0 0;}

.topics{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);max-height:340px;overflow:auto;padding:6px 12px;}
.topics h4{margin:12px 0 4px;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text);}
.topic-row{display:flex;gap:10px;align-items:flex-start;padding:7px 0;font-size:.9rem;cursor:pointer;}
.topic-row input{margin-top:3px;width:18px;height:18px;flex-shrink:0;accent-color:var(--gold);}
.topic-row .n{margin-left:auto;color:var(--muted);font-size:.8rem;flex-shrink:0;padding-left:8px;}
.topic-row.zero{opacity:.5;}
input[type=search],input[type=text],input[type=time],input[type=number],select{font-family:inherit;font-size:1rem;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--text);max-width:100%;}
.matchbar{position:sticky;bottom:0;background:var(--bg);padding:12px 0 4px;border-top:1px solid var(--line);margin-top:20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.matchbar .count{font-family:'Lora',serif;font-size:1.05rem;}
.start-btn,.btn{border:none;border-radius:10px;padding:14px 26px;font-size:1rem;font-weight:700;cursor:pointer;font-family:inherit;}
.start-btn{background:var(--gold);color:var(--ink);}
.start-btn:disabled{opacity:.4;cursor:not-allowed;}
.start-btn:hover:not(:disabled){background:#d6b25c;}
.btn{background:var(--ink);color:var(--parchment);padding:12px 20px;font-weight:600;font-size:.92rem;}
.btn:hover{background:#000;}
.btn.secondary{background:transparent;border:1.5px solid currentColor;color:inherit;}
.btn.gold{background:var(--gold);color:var(--ink);}
.btn.gold:hover{background:#d6b25c;}
.btn:disabled{opacity:.4;cursor:not-allowed;}
.btn.sm{padding:8px 14px;font-size:.82rem;}
.linkish{background:none;border:none;color:var(--accent-text);text-decoration:underline;cursor:pointer;font:inherit;padding:4px 0;}

/* PLAY */
.playbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px;flex-wrap:wrap;}
.stat{font-size:.82rem;color:var(--muted);}
.stat b{color:var(--text);font-weight:600;}
.timerwrap{height:6px;background:var(--surface-2);border-radius:999px;overflow:hidden;margin-bottom:18px;}
.timerwrap.off{background:transparent;height:auto;font-size:.78rem;color:var(--muted);}
.timerbar{height:100%;background:var(--gold);width:100%;transition:width .1s linear,background .2s;}
.timerbar.danger{background:var(--crimson);}
.qcard{background:var(--parchment);color:var(--ink);border-radius:var(--radius);padding:24px 20px;margin-bottom:18px;}
:root[data-theme="light"] .qcard{background:#fff;border:1px solid var(--line);}
.qmeta{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:14px;}
.qtype{display:inline-block;font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;background:var(--ink);color:var(--gold);padding:4px 10px;border-radius:999px;font-weight:600;}
.badge{display:inline-block;font-size:.66rem;letter-spacing:.05em;text-transform:uppercase;border:1px solid #8a7a45;color:#6b5a1f;padding:3px 8px;border-radius:999px;font-weight:600;}
.badge.review{border-color:var(--crimson);color:var(--crimson);}
.qtext{font-family:'Lora',serif;font-size:1.2rem;line-height:1.42;font-weight:500;margin:0 0 18px;}
.opts{display:flex;flex-direction:column;gap:10px;}
.opt{text-align:left;background:#fff;border:1.5px solid var(--parchment-dim);border-radius:10px;padding:13px 16px;cursor:pointer;font-family:inherit;font-size:.95rem;color:var(--ink);display:flex;gap:10px;align-items:flex-start;}
.opt .k{font-weight:700;color:var(--gold-dim);flex-shrink:0;}
.opt:hover:not(.locked){border-color:var(--gold);}
.opt.correct{background:#e4f2ea;border-color:var(--green);}
.opt.wrong{background:#f6e3e2;border-color:var(--crimson);}
.opt.locked{cursor:default;}
.fib-row{display:flex;gap:10px;flex-wrap:wrap;}
.fib-row input{flex:1;min-width:180px;background:#fff;color:var(--ink);border:1.5px solid var(--parchment-dim);}
textarea{font-family:inherit;font-size:.98rem;padding:12px 14px;border-radius:10px;border:1.5px solid var(--parchment-dim);background:#fff;color:var(--ink);width:100%;min-height:110px;resize:vertical;margin:6px 0 14px;}
.sub-label{font-weight:600;font-size:.9rem;}
.feedback{margin-top:14px;padding:16px 18px;border-radius:10px;font-size:.92rem;line-height:1.5;}
.feedback.good{background:#e4f2ea;border:1px solid var(--green);color:#1d4531;}
.feedback.bad{background:#f6e3e2;border:1px solid var(--crimson);color:#5c1e26;}
.feedback .lbl{font-weight:700;display:block;margin-bottom:4px;font-family:'Lora',serif;}
.source{display:block;margin-top:8px;font-size:.78rem;opacity:.8;}
.model-answer{background:var(--ink-3);border-left:3px solid var(--gold);border-radius:0 8px 8px 0;padding:14px 16px;margin:14px 0;font-size:.92rem;line-height:1.55;color:var(--parchment-dim);}
.model-answer b.h{color:var(--gold);font-family:'Lora',serif;display:block;margin-bottom:6px;font-weight:600;}
.model-answer p{margin:0 0 8px;}
.model-answer .src{color:var(--parchment-dim);}
.checklist{background:#fff;border:1px solid var(--parchment-dim);border-radius:10px;padding:10px 14px;margin:10px 0;font-size:.9rem;color:var(--ink);}
.checklist legend{font-weight:600;padding:0 6px;}
.checklist label{display:flex;gap:8px;align-items:center;padding:4px 0;cursor:pointer;}
.checklist input{width:18px;height:18px;accent-color:var(--green);}
.selfgrade{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px;}
.selfgrade .btn{background:var(--ink);}
.selfgrade .btn.gold{background:var(--gold);}
.next-row{display:flex;justify-content:flex-end;margin-top:10px;}

/* RESULTS */
.score-hero{text-align:center;padding:24px 10px 6px;}
.score-num{font-family:'Lora',serif;font-size:clamp(3rem,10vw,4.4rem);font-weight:700;color:var(--accent-text);line-height:1;}
.score-sub{color:var(--muted);margin-top:6px;font-size:.95rem;}
.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:22px 0;}
.sbox{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center;}
.sbox .num{font-family:'Lora',serif;font-size:1.5rem;font-weight:700;}
.sbox .lbl{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:4px;}
.review-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:12px;overflow-wrap:anywhere;}
.review-item .qtag{font-size:.7rem;color:var(--accent-text);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px;}
.review-item .qq{font-family:'Lora',serif;font-weight:500;margin-bottom:8px;line-height:1.4;}
.review-item .aa{font-size:.88rem;color:var(--text-dim);line-height:1.5;}
.review-item .aa b{color:var(--accent-text);}
.endbtns{display:flex;gap:12px;flex-wrap:wrap;margin-top:12px;}
.endbtns .btn.secondary,.card .btn.secondary{color:var(--text);}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px;}
.card h3:first-child{margin-top:0;}

/* DASHBOARD */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;margin-bottom:14px;}
.chartrow{display:grid;grid-template-columns:minmax(90px,38%) 1fr;gap:10px;align-items:center;margin:8px 0;font-size:.82rem;}
.chartrow .lab{overflow-wrap:anywhere;color:var(--text-dim);}
.chartrow svg{width:100%;height:30px;display:block;}
.bar-track{fill:var(--bar-track);}
.bar-a{fill:var(--chart-a);}
.bar-b{fill:var(--chart-b);}
.bar-txt{fill:var(--text);font-size:9px;font-family:'IBM Plex Sans',sans-serif;}
.legend{display:flex;gap:16px;font-size:.78rem;color:var(--muted);flex-wrap:wrap;margin:6px 0;}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:-2px;}
.line-svg{width:100%;height:auto;display:block;}
.line-svg .grid{stroke:var(--chart-grid);stroke-width:1;}
.line-svg .ln{fill:none;stroke:var(--chart-a);stroke-width:2.5;}
.line-svg .dot{fill:var(--chart-a);}
.line-svg text{fill:var(--muted);font-size:10px;font-family:'IBM Plex Sans',sans-serif;}
.filters-row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;margin-bottom:14px;}
.filters-row label{display:flex;flex-direction:column;gap:4px;font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;}
.attempt{border-top:1px solid var(--line);padding:10px 0;}
.attempt summary{cursor:pointer;display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;}
.weak-row{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding:8px 0;border-top:1px solid var(--line);}

/* GROUP */
.codebox{font-family:ui-monospace,Menlo,monospace;font-size:1.05rem;letter-spacing:.06em;word-break:break-all;background:var(--surface-2);padding:12px;border-radius:10px;user-select:all;}
.qrbox{background:#fff;padding:12px;border-radius:12px;display:inline-block;line-height:0;}
.qrbox svg{width:210px;height:210px;max-width:100%;}
.warn{border:1px solid var(--crimson);background:rgba(154,49,64,.15);padding:12px 14px;border-radius:10px;font-size:.9rem;line-height:1.45;}
table.rank{width:100%;border-collapse:collapse;font-size:.9rem;}
table.rank th,table.rank td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line);}
table.rank th{font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);}
.row-gap{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.hidden{display:none !important;}
.sr{position:absolute;left:-9999px;}
@media (max-width:480px){.qcard{padding:18px 14px;}.qtext{font-size:1.08rem;}.chartrow{grid-template-columns:1fr;gap:2px;}}
@media (prefers-reduced-motion:reduce){*{transition:none !important;}}

/* TAGS PANEL (shown after an answer is revealed) */
.tagspanel{background:rgba(255,255,255,.7);color:#121a2b;border:1px solid rgba(18,26,43,.18);border-radius:10px;padding:10px 12px;margin:10px 0;}
.review-item .tagspanel{background:var(--surface-2);color:var(--text);border-color:var(--line);}
.tagshead{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700;margin-bottom:6px;opacity:.75;}
.tagrow{display:flex;flex-wrap:wrap;gap:6px;}
.tagpill{display:inline-flex;align-items:baseline;gap:6px;max-width:100%;border:1px solid currentColor;border-radius:999px;padding:3px 10px;font-size:.8rem;line-height:1.35;}
.tagpill .k{font-size:.66rem;text-transform:uppercase;letter-spacing:.06em;opacity:.7;flex-shrink:0;}
.tagpill .v{font-weight:600;overflow-wrap:anywhere;}