:root{
  --bg0:#0b1020;
  --bg1:#0f1a3b;
  --card:rgba(255,255,255,.07);
  --card2:rgba(255,255,255,.10);
  --border:rgba(255,255,255,.12);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.70);
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --primary:#7c3aed;
  --primary2:#22c55e;
  --danger:#ef4444;
  --warn:#f59e0b;
  --focus:rgba(124,58,237,.35);
  --radius:16px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

html[data-theme="light"]{
  --bg0:#f6f7fb;
  --bg1:#e9ecff;
  --card:rgba(0,0,0,.04);
  --card2:rgba(0,0,0,.06);
  --border:rgba(0,0,0,.10);
  --text:rgba(10,10,12,.90);
  --muted:rgba(10,10,12,.65);
  --shadow:0 14px 45px rgba(15,23,42,.12);
  --focus:rgba(124,58,237,.25);
}

*{ box-sizing:border-box; }
body{
  margin:0;
  font-family:var(--sans);
  color:var(--text);
  background:radial-gradient(1200px 800px at 20% 10%, var(--bg1), var(--bg0));
  min-height:100vh;
  overflow-x:hidden;
}

.bg{
  position:fixed;
  inset:-120px;
  background:
    radial-gradient(900px 600px at 85% 15%, rgba(124,58,237,.25), transparent 60%),
    radial-gradient(850px 550px at 15% 85%, rgba(34,197,94,.18), transparent 60%),
    radial-gradient(700px 500px at 60% 65%, rgba(59,130,246,.15), transparent 55%);
  filter:blur(12px);
  opacity:.9;
  pointer-events:none;
  z-index:-1;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 20px;
  max-width:980px;
  margin:0 auto;
}
.brand{ display:flex; gap:12px; align-items:center; }
.logo{
  width:42px; height:42px;
  border-radius:14px;
  background:linear-gradient(135deg, rgba(124,58,237,.95), rgba(34,197,94,.8));
  display:grid; place-items:center;
  font-weight:800;
  box-shadow:0 12px 24px rgba(0,0,0,.25);
}
.brandTitle{ font-weight:800; letter-spacing:.2px; }
.brandSub{ font-size:12px; color:var(--muted); margin-top:2px; }

.container{
  max-width:980px;
  margin:0 auto;
  padding:0 20px 24px;
}

.card{
  background:linear-gradient(180deg, var(--card), transparent 140%);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:22px;
  backdrop-filter: blur(10px);
}

.hidden{ display:none !important; }

.h1{ margin:0 0 10px; font-size:26px; }
.h2{ margin:0 0 12px; font-size:22px; }
.h3{ margin:18px 0 10px; font-size:16px; color:var(--muted); font-weight:700; }
.muted{ color:var(--muted); }

.grid2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:14px;
  margin-top:14px;
}
@media (max-width:760px){
  .grid2{ grid-template-columns:1fr; }
  .topbar{ padding:16px 16px; }
  .container{ padding:0 16px 20px; }
}

@media (max-width:560px){
  .topbar{
    gap:12px;
    align-items:flex-start;
  }
  .brandSub{ display:none; }
  .card{ padding:16px; border-radius:14px; }
  .h1{ font-size:22px; }
  .h2{ font-size:20px; }
  .grid2{ gap:12px; }

  .quizTop{
    flex-direction:column;
    align-items:stretch;
    gap:10px;
  }
  .pill{ align-self:flex-start; }

  .qHeader{
    flex-direction:column;
    align-items:flex-start;
    gap:6px;
  }
  .qMeta{ text-align:left; word-break:break-word; }

  .actions{
    flex-wrap:wrap;
    gap:8px;
  }
  .actions .spacer{ display:none; }
  .actions .btn{
    flex:1 1 140px;
    padding:12px 14px;
  }

  .opt{ padding:12px; }
  .optLabel{ word-break:break-word; }
}

@media (max-width:380px){
  .container{ padding:0 12px 18px; }
  .topbar{ padding:14px 12px; }
  .card{ padding:14px; }
  .logo{ width:38px; height:38px; border-radius:12px; }
}

.field label{
  display:block;
  font-size:12px;
  color:var(--muted);
  margin:0 0 8px;
  font-weight:700;
}
select, input[type="number"], input[type="text"], input[type="password"]{
  width:100%;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.10);
  color:var(--text);
  padding:10px 12px;
  outline:none;
  font-family:var(--sans);
  font-size:14px;
}
html[data-theme="light"] select,
html[data-theme="light"] input[type="number"],
html[data-theme="light"] input[type="text"],
html[data-theme="light"] input[type="password"]{
  background:rgba(255,255,255,.55);
}
select:focus, input:focus{ box-shadow:0 0 0 4px var(--focus); border-color:rgba(124,58,237,.65); }

.check{
  display:flex;
  gap:10px;
  align-items:center;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--card2);
}
.check input{ width:18px; height:18px; }

.actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:16px;
}
.spacer{ flex:1; }

.btn{
  border-radius:12px;
  padding:10px 14px;
  border:1px solid var(--border);
  background:var(--card2);
  color:var(--text);
  cursor:pointer;
  font-weight:750;
}
.btn:hover{ transform: translateY(-1px); }
.btn:active{ transform: translateY(0px); }
.btn.primary{
  background:linear-gradient(135deg, rgba(124,58,237,.95), rgba(124,58,237,.62));
  border-color:rgba(124,58,237,.55);
}
.btn.ghost{ background:transparent; }
.btn:focus{ outline:none; box-shadow:0 0 0 4px var(--focus); }

.details{
  margin-top:14px;
  color:var(--muted);
}
.details summary{
  cursor:pointer;
  font-weight:700;
}
.details code{ font-family:var(--mono); font-size:12px; }

.quizTop{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px;
  margin-bottom:14px;
}
.progressWrap{ flex:1; }
.progressText{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:10px;
  margin-bottom:8px;
  font-weight:800;
}
.progressBar{
  height:10px;
  border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid var(--border);
  overflow:hidden;
}
.progressFill{
  height:100%;
  width:0%;
  background:linear-gradient(90deg, rgba(34,197,94,.95), rgba(124,58,237,.95));
}
.pill{
  padding:8px 10px;
  border-radius:999px;
  border:1px solid var(--border);
  background:var(--card2);
  color:var(--muted);
  font-weight:800;
  white-space:nowrap;
}

.qBlock{ padding:14px 14px 6px; border:1px solid var(--border); border-radius:14px; background:var(--card2); }
.qHeader{ display:flex; align-items:flex-start; justify-content:space-between; gap:10px; }
.qTitle{ font-weight:900; }
.qMeta{ font-family:var(--mono); font-size:12px; color:var(--muted); text-align:right; }
.qPrompt{ margin-top:10px; line-height:1.45; white-space:pre-wrap; }

.options{
  margin-top:14px;
  display:grid;
  gap:10px;
}
.opt{
  display:flex;
  gap:12px;
  align-items:flex-start;
  padding:12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.06);
  cursor:pointer;
}
html[data-theme="light"] .opt{ background:rgba(255,255,255,.55); }
.opt:hover{ border-color:rgba(124,58,237,.35); }
.opt input{ margin-top:2px; width:18px; height:18px; }
.optLabel{ flex:1; line-height:1.35; }

.opt.optCorrect{
  border-color:rgba(34,197,94,.55);
  box-shadow:0 0 0 4px rgba(34,197,94,.15);
}
.opt.optWrong{
  border-color:rgba(239,68,68,.55);
  box-shadow:0 0 0 4px rgba(239,68,68,.12);
}
.opt.optCorrectOutline{
  border-color:rgba(34,197,94,.35);
}

.feedback{
  margin-top:12px;
  padding:12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.10);
  white-space:pre-wrap;
}
html[data-theme="light"] .feedback{ background:rgba(255,255,255,.55); }
.feedback.good{ border-color:rgba(34,197,94,.35); }
.feedback.bad{ border-color:rgba(239,68,68,.35); }
.feedback.warn{ border-color:rgba(245,158,11,.35); }

.scoreSummary{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:10px;
}
.scoreBox{
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:var(--card2);
  min-width:160px;
}
.scoreBox .k{ font-size:12px; color:var(--muted); font-weight:800; }
.scoreBox .v{ font-size:20px; font-weight:900; margin-top:4px; }

.review{
  display:grid;
  gap:12px;
}
.reviewItem{
  padding:12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:var(--card2);
}
.reviewItem .meta{ font-family:var(--mono); font-size:12px; color:var(--muted); }
.reviewItem .prompt{ margin-top:6px; white-space:pre-wrap; }
.reviewItem .line{ margin-top:8px; font-family:var(--mono); font-size:12px; color:var(--muted); }
.reviewItem .line b{ color:var(--text); }

.footer{
  max-width:980px;
  margin:18px auto 28px;
  padding:0 20px;
  font-size:12px;
}

/* Search page styles */
.searchResults{
  display:grid;
  gap:16px;
  margin-top:20px;
}
.searchResultCard{
  padding:16px;
  border-radius:14px;
  border:1px solid var(--border);
  background:var(--card2);
}
.searchMeta{
  font-family:var(--mono);
  font-size:12px;
  color:var(--muted);
  margin-bottom:10px;
}
.searchPrompt{
  font-weight:700;
  font-size:15px;
  line-height:1.5;
  margin-bottom:12px;
  color:var(--text);
  word-wrap:break-word;
  white-space:pre-wrap;
}
.searchPrompt mark{
  background:rgba(124,58,237,.3);
  color:var(--text);
  padding:2px 4px;
  border-radius:4px;
}
html[data-theme="light"] .searchPrompt mark{
  background:rgba(124,58,237,.2);
}
.searchOptions{
  display:grid;
  gap:8px;
  margin-top:12px;
}
.searchOption{
  padding:10px 12px;
  border-radius:12px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.06);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
html[data-theme="light"] .searchOption{
  background:rgba(255,255,255,.55);
}
.searchOptionCorrect{
  border-color:rgba(34,197,94,.55);
  background:rgba(34,197,94,.1);
  box-shadow:0 0 0 2px rgba(34,197,94,.15);
}
html[data-theme="light"] .searchOptionCorrect{
  background:rgba(34,197,94,.15);
}
.searchOptionText{
  flex:1;
  line-height:1.4;
  word-wrap:break-word;
  overflow-wrap:break-word;
}
.searchOptionText mark{
  background:rgba(124,58,237,.3);
  color:var(--text);
  padding:1px 3px;
  border-radius:3px;
}
html[data-theme="light"] .searchOptionText mark{
  background:rgba(124,58,237,.2);
}
.searchCorrectBadge{
  font-size:12px;
  font-weight:800;
  color:rgba(34,197,94,.9);
  padding:4px 8px;
  border-radius:6px;
  background:rgba(34,197,94,.2);
  white-space:nowrap;
}
.searchNoAnswer{
  padding:10px 12px;
  border-radius:12px;
  border:1px solid rgba(245,158,11,.35);
  background:rgba(245,158,11,.1);
  color:var(--muted);
  font-size:13px;
  font-style:italic;
}
html[data-theme="light"] .searchNoAnswer{
  background:rgba(245,158,11,.15);
}