:root {
  --bg: #f4f6fa; --text: #1f2937; --card: #ffffff; --line: #cbd5e1; --muted: #64748b;
  --blue: #1d4ed8; --green: #16a34a; --greenbg: #dcfce7; --red: #dc2626; --redbg: #fee2e2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a; --text: #e5e7eb; --card: #1e293b; --line: #475569; --muted: #94a3b8;
    --blue: #60a5fa; --green: #4ade80; --greenbg: #14532d; --red: #f87171; --redbg: #7f1d1d;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, "Noto Sans", "Noto Sans Devanagari", "Noto Sans Gurmukhi", "Noto Sans Bengali", "Noto Sans Telugu", sans-serif; background: var(--bg); color: var(--text); font-size: 17px; line-height: 1.5; }
.screen { max-width: 640px; margin: 0 auto; padding: 16px; min-height: 100vh; }
.blue { background: #1d4ed8; color: #fff; max-width: none; text-align: center; }
.blue h1 { margin-top: 28px; }
.sub { max-width: 520px; margin: 8px auto; opacity: .95; }
.hidden { display: none !important; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 20px auto; max-width: 500px; }
.box { background: #fff; color: #1f2937; padding: 14px; border-radius: 10px; }
button { font: inherit; cursor: pointer; color: inherit; }
.big { display: block; background: var(--green); color: #fff; border: none; padding: 14px 20px; border-radius: 10px; width: 100%; max-width: 500px; margin: 14px auto 0; font-weight: bold; }
.link { background: none; border: none; color: var(--blue); padding: 8px 0; }
.pill { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; color: var(--text); }
.top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.top h2 { margin: 0; font-size: 1.25em; }
.card { background: var(--card); padding: 14px; border-radius: 10px; margin: 12px 0; box-shadow: 0 1px 4px rgba(0,0,0,.12); }
.card p { margin: 4px 0 8px; }
.bar { background: var(--line); height: 10px; border-radius: 5px; overflow: hidden; }
#progressFill, #qFill { background: var(--green); height: 100%; width: 0; transition: width .2s; }
.item { display: block; width: 100%; text-align: left; background: var(--card); border: 1px solid var(--line); padding: 12px 14px; border-radius: 10px; margin: 8px 0; }
.item small { color: var(--muted); display: block; }
.item .bar { margin-top: 8px; height: 6px; }
.item.soon { color: var(--muted); opacity: .7; cursor: default; }
.row { display: flex; gap: 10px; }
.half { width: 50%; text-align: center; }
.subtle { color: var(--muted); }
.note { font-size: 13px; color: var(--muted); }
.chap { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
#count { margin: 2px 0 6px; font-weight: bold; }
#questionText { font-size: 1.2em; margin: 14px 0 6px; }
.signbox { background: #fff; border-radius: 10px; padding: 8px; width: 150px; margin: 12px auto 4px; box-shadow: 0 1px 4px rgba(0,0,0,.15); }
.signbox svg { display: block; width: 100%; height: auto; }
.answer { display: flex; gap: 10px; width: 100%; text-align: left; background: var(--card); border: 2px solid var(--line); padding: 13px; border-radius: 10px; margin: 9px 0; cursor: pointer; }
.answer .letter { font-weight: bold; min-width: 1.4em; }
.answer.right { background: var(--greenbg); border-color: var(--green); }
.answer.wrong { background: var(--redbg); border-color: var(--red); }
.answer.locked { cursor: default; }
.verdict { font-weight: bold; margin-bottom: 6px; }
.verdict.good { color: var(--green); }
.verdict.bad { color: var(--red); }
[dir="rtl"] { text-align: right; }
[lang="ur"] { line-height: 2; }
.kw { color: var(--blue); border-bottom: 2px dotted var(--blue); cursor: pointer; }
.popup { position: fixed; inset: 0; background: rgba(0,0,0,.55); display: flex; align-items: flex-end; justify-content: center; z-index: 10; }
.sheet { background: var(--card); width: 100%; max-width: 640px; border-radius: 16px 16px 0 0; padding: 16px; max-height: 92vh; overflow-y: auto; }
.pic svg { display: block; width: 100%; max-width: 420px; margin: 0 auto; border-radius: 10px; }
.term { font-size: 1.3em; font-weight: bold; margin-top: 10px; }
.pname { color: var(--blue); font-weight: bold; }
#wordSearch { width: 100%; padding: 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); font: inherit; margin-bottom: 8px; }
.resultbox { text-align: center; }
.resultbox .score { font-size: 2.2em; font-weight: bold; margin: 8px 0; }
.stats { display: flex; gap: 8px; margin: 10px 0; }
.stats div { flex: 1; background: var(--card); border-radius: 10px; padding: 10px; border: 1px solid var(--line); }
.qmean { margin: 0 0 6px; padding: 8px 10px; background: var(--card); border-left: 4px solid var(--blue); border-radius: 6px; color: var(--text); }
[dir="rtl"].qmean { border-left: none; border-right: 4px solid var(--blue); }
.answer > span:last-child { display: block; }
.omean { display: block; margin-top: 3px; font-size: .9em; color: var(--muted); }
#meaningBtn { margin-top: 10px; }

.speakrow { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 4px; }
.speakbtn { background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px; color: var(--text); font: inherit; cursor: pointer; }
.speakbtn.on { background: var(--blue); color: #fff; border-color: var(--blue); }
.speakmsg { font-size: .85em; color: var(--muted); margin: 2px 0 0; }
#explain .speakbtn { margin-top: 8px; }

.spkw { display: inline-block; max-width: 100%; }
.speakmsg { display: block; }
.mockbtn { background: var(--blue); max-width: none; }
.mtimer { font-weight: bold; font-size: 1.2em; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 4px 14px; }
.mtimer.low, #mockTime.low { color: var(--red); }
.answer.sel { border-color: var(--blue); background: rgba(29,78,216,.12); }
.mnav { margin-top: 12px; }
.mnav .item { margin: 0; padding: 10px 6px; }
.mnav .item:disabled { opacity: .4; }
.mgrid { display: grid; grid-template-columns: repeat(10, 1fr); gap: 5px; margin: 14px 0; }
.mnum { border: 1px solid var(--line); background: var(--card); border-radius: 6px; padding: 6px 0; font-size: 13px; }
.mnum.ans { background: var(--greenbg); border-color: var(--green); }
.mnum.flg { outline: 2px solid #f59e0b; }
.mnum.cur { border: 2px solid var(--blue); font-weight: bold; }
.cbar { margin: 8px 0; }
.cl { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; margin-bottom: 3px; }
.rv { font-size: 15px; }
.badtxt { color: var(--red); margin-top: 4px; }
.goodtxt { color: var(--green); margin-top: 2px; font-weight: bold; }
.muted { color: var(--muted); }
.rvx { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--line); color: var(--muted); }