/* हिंदी कक्षा 4 — one stylesheet for the whole course.
 * Baloo 2 is the Devanagari sibling of the Kannada app's Baloo Tamma 2, so the
 * two courses read as one family. Mukta carries the longer prose. */
:root{
  --hi:"Baloo 2","Mukta","Noto Sans Devanagari",system-ui,sans-serif;
  --ui:"Mukta","Baloo 2",system-ui,sans-serif;
  --ink:#2a2118; --dim:#7a6b5b; --line:#e6dbcc;
  --bg:#fffaf2; --card:#fff; --accent:#f4772e; --accent2:#ffb703;
  --bar:rgba(255,250,242,.94); --track:#f0e6d6;
  --good:#0f9d58; --bad:#e63946; --lock:#cfc4b6;
  --shadow:0 2px 0 #e8dcc9,0 8px 22px rgba(120,90,50,.10);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--ui);
  -webkit-text-size-adjust:100%;overflow-x:hidden}
button{font-family:inherit;color:inherit}

/* -------------------------------------------------------------- top bar */
#top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:8px;
  padding:8px 12px;background:var(--bar);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line)}
#mascot{width:38px;height:38px;flex:0 0 38px}
.stats{display:flex;gap:10px;margin-inline-start:auto;align-items:center}
.stat{font-weight:700;font-size:15px;white-space:nowrap}
.stat.streak.hot b{color:var(--accent)}
.stat.streak.blaze b{color:#e63946;text-shadow:0 0 10px rgba(230,57,70,.4)}
.clock{font-variant-numeric:tabular-nums;font-size:17px;
  background:#fff;border:2px solid var(--line);border-radius:10px;padding:1px 8px}
.clock.low{border-color:var(--bad);color:var(--bad);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.55}}
.icon{background:none;border:0;font-size:20px;cursor:pointer;padding:4px 6px;border-radius:8px}
.icon:hover{background:#f2e9dc}

/* --------------------------------------------------------------- screens */
.screen{display:none;max-width:640px;margin:0 auto;padding:16px 16px 96px}
.screen.on{display:block}
.hero{font-family:var(--hi);font-size:34px;margin:14px 0 2px;line-height:1.15}
.hero span{display:block;font-size:18px;color:var(--dim);font-weight:600}
.hero-sub{color:var(--dim);margin:0 0 18px;font-size:15px}
h2{font-family:var(--hi);font-size:24px;margin:8px 0 4px}

/* ---------------------------------------------------------- lesson cards */
.map{display:grid;gap:12px}
.lesson-card{display:flex;gap:14px;align-items:center;text-align:start;width:100%;
  background:var(--card);border:2px solid var(--line);border-radius:18px;
  padding:14px;cursor:pointer;box-shadow:var(--shadow);transition:transform .08s}
.lesson-card:active{transform:translateY(2px)}
.lc-emoji{font-size:34px;flex:0 0 44px;text-align:center}
.lc-body{flex:1;min-width:0}
.lc-kind{font-size:12px;color:var(--dim);font-weight:600;letter-spacing:.02em}
.lc-title{font-family:var(--hi);font-size:20px;margin:1px 0 7px}
.lc-bar{height:8px;background:var(--track);border-radius:99px;overflow:hidden}
.lc-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent));border-radius:99px}
.lc-meta{font-size:12px;color:var(--dim);margin-top:5px}

/* -------------------------------------------------------------- sections */
.sections{display:grid;gap:9px;margin-top:14px}
.sec{display:flex;align-items:center;gap:12px;width:100%;text-align:start;
  background:var(--card);border:2px solid var(--line);border-radius:14px;
  padding:13px 14px;font-size:17px;cursor:pointer;box-shadow:var(--shadow)}
.sec-emoji{font-size:21px}
.sec-title{flex:1;font-family:var(--hi)}
.sec-go{color:var(--accent);font-weight:700}
.sec.done{background:#f2fbf5;border-color:#bfe6cd}
.sec.locked{opacity:.5;background:#f7f2ea;border-color:var(--lock);cursor:not-allowed}

/* ------------------------------------------------------------------ play */
.playbar{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.progress{flex:1;height:12px;background:var(--track);border-radius:99px;overflow:hidden}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent2),var(--accent));
  border-radius:99px;transition:width .28s}
.hearts{font-size:14px;letter-spacing:1px;white-space:nowrap}
.timebar{height:6px;background:var(--accent);border-radius:99px;margin-bottom:8px}
.play-title{font-size:15px;color:var(--dim);font-family:var(--ui);font-weight:600;margin:2px 0 12px}
.body{min-height:44vh}
.q-title{font-family:var(--hi);font-size:21px;line-height:1.45;margin-bottom:14px}
.q-title .en{display:block;font-family:var(--ui);font-size:13px;color:var(--dim);font-weight:400;margin-top:2px}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.grid.pics{grid-template-columns:1fr 1fr}
.opt{background:var(--card);border:2px solid var(--line);border-radius:14px;padding:15px 12px;
  font-size:19px;font-family:var(--hi);cursor:pointer;box-shadow:var(--shadow);
  min-height:60px;display:flex;align-items:center;justify-content:center;text-align:center;line-height:1.3}
.opt .en{display:block;font-family:var(--ui);font-size:12px;color:var(--dim);font-weight:400}
.opt .emoji{font-size:40px}
.opt .matra{font-size:34px;font-weight:700}
.opt.sel{border-color:var(--accent);background:#fff4ea;box-shadow:0 0 0 3px rgba(244,119,46,.16)}

.big-say,.big-word{font-family:var(--hi);font-size:30px;text-align:center;margin:16px 0 18px;line-height:1.35}
.prompt{text-align:center;margin:10px 0 16px}
.emoji.big{font-size:64px;display:block}
.en-hint{color:var(--dim);font-size:15px;margin-top:6px}
.say{background:#fff;border:2px solid var(--line);border-radius:50%;width:38px;height:38px;
  font-size:17px;cursor:pointer;vertical-align:middle;box-shadow:var(--shadow)}
.say.playing{animation:ping .5s}
@keyframes ping{0%{transform:scale(1)}45%{transform:scale(1.22)}100%{transform:scale(1)}}

.wordcard{background:var(--card);border:2px solid var(--line);border-radius:20px;
  padding:22px;text-align:center;box-shadow:var(--shadow)}
.wc-emoji{font-size:66px}
.wc-hi{font-family:var(--hi);font-size:34px;margin:8px 0 6px}
.wc-gl{font-size:18px}
.wc-en{color:var(--dim);font-size:14px;margin-top:3px}

.type-in,.write-in{width:100%;font-family:var(--hi);font-size:22px;padding:13px;
  border:2px solid var(--line);border-radius:14px;background:#fff;outline:none}
.type-in:focus,.write-in:focus{border-color:var(--accent)}
.write-in{font-size:17px;line-height:1.6}

.match{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.mcol{display:grid;gap:9px;align-content:start}
.mcell{background:var(--card);border:2px solid var(--line);border-radius:13px;padding:12px 10px;
  font-family:var(--hi);font-size:17px;cursor:pointer;box-shadow:var(--shadow);text-align:center}
.mcell.sel{border-color:var(--accent);background:#fff4ea}
.mcell.ok{border-color:var(--good);background:#eefaf1;opacity:.65;cursor:default}
.mcell.no{border-color:var(--bad);background:#fdeeee}

.text-block{background:var(--card);border:2px solid var(--line);border-radius:16px;
  padding:18px;box-shadow:var(--shadow)}
.text-block .line{font-family:var(--hi);font-size:20px;line-height:1.85;padding:3px 0}
.text-block .line.dim{opacity:.38}
.text-block .line.now{background:#fff4ea;border-radius:8px}
.text-block .line .en{display:block;font-family:var(--ui);font-size:12.5px;color:var(--dim);line-height:1.4;margin:-2px 0 6px}
.text-block .w{cursor:pointer;border-radius:6px;padding:0 1px}
.text-block .w:hover{background:#ffe9d6}
.blank{color:var(--accent);letter-spacing:1px}

.slots{display:grid;gap:8px;min-height:64px;margin-bottom:14px}
.slot,.tile{background:var(--card);border:2px solid var(--line);border-radius:12px;
  padding:11px 12px;font-family:var(--hi);font-size:17px;cursor:pointer;box-shadow:var(--shadow);text-align:start}
.slot{border-color:var(--accent);background:#fff4ea}
.pool{display:flex;flex-wrap:wrap;gap:8px}
.tile:disabled{opacity:.3;cursor:default}
.tile.sel{border-color:var(--accent);background:#fff4ea}

.bins{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
/* Sentence-sized tiles: one bin per row, and let a tile wrap instead of
   forcing it onto four lines inside a half-width box. */
.bins.wide{grid-template-columns:1fr}
.pool.wide{flex-direction:column;align-items:stretch}
.pool.wide .tile,.bins.wide .tile{white-space:normal;text-align:left;line-height:1.45}
.bin{background:#faf4ea;border:2px dashed var(--line);border-radius:16px;padding:10px;min-height:110px;cursor:pointer}
.bin-name{font-family:var(--hi);font-size:16px;text-align:center;color:var(--dim);margin-bottom:8px}
.bin-body{display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.bin .tile{font-size:15px;padding:7px 10px}

.reward,.panel,.note-card{background:var(--card);border:2px solid var(--line);border-radius:18px;
  padding:20px;box-shadow:var(--shadow)}
.reward{text-align:center;background:linear-gradient(180deg,#fff8ec,#fff)}
.rw-hi{font-family:var(--hi);font-size:26px;margin-bottom:8px}
.rw-means{font-size:17px}
.rw-ex{font-size:15px;color:var(--dim);margin-top:9px;line-height:1.6}
.rw-en,.rw-why{font-size:13px;color:var(--dim);margin-top:8px}
.panel{text-align:center}
.pn-scene{font-size:52px;letter-spacing:4px}
.pn-who{font-size:14px;color:var(--dim);margin:8px 0 4px;font-weight:600}
.pn-hi{font-family:var(--hi);font-size:22px;line-height:1.55}
.pn-en{font-size:13px;color:var(--dim);margin-top:7px}
.pn-next{margin-top:14px;font-size:13px;color:var(--accent);font-weight:700}
.panel.cliff{background:linear-gradient(180deg,#fff4ea,#fff)}
.hint-line{font-size:13.5px;color:var(--dim);margin-top:12px;text-align:center}

/* -------------------------------------------------------------- feedback */
.feedback{min-height:8px;margin-top:14px;font-size:16px;border-radius:14px}
.feedback.good{background:#eefaf1;border:2px solid #bfe6cd;padding:13px;color:#0b7a45}
.feedback.bad{background:#fdeeee;border:2px solid #f4c2c4;padding:13px;color:#a4232c}
.feedback .ans{margin-top:5px;font-size:15px;font-family:var(--hi)}
.warn{margin-top:8px;font-size:13px;background:#fff8e1;border:1px solid #f0d98a;
  border-radius:9px;padding:8px;color:#7a5a10;font-family:var(--ui)}
.refill{margin-top:8px;font-size:14px;color:var(--accent)}

.foot{position:fixed;left:0;right:0;bottom:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:linear-gradient(180deg,transparent,var(--bg) 32%);
  display:flex;gap:10px;max-width:640px;margin:0 auto}
.wide-btn{flex:1;background:var(--accent);color:#fff;border:0;border-radius:15px;padding:15px;
  font-size:18px;font-weight:700;cursor:pointer;box-shadow:0 4px 0 #d55f1c}
.wide-btn:disabled{background:#e2d7c7;box-shadow:0 4px 0 #d2c6b4;cursor:not-allowed}
.wide-btn:active:not(:disabled){transform:translateY(3px);box-shadow:none}
.ghost-btn{background:#fff;border:2px solid var(--line);border-radius:15px;padding:13px 16px;
  font-size:15px;cursor:pointer;box-shadow:var(--shadow)}
.tiny-btn{background:none;border:0;color:var(--dim);font-size:12px;margin-top:18px;
  cursor:pointer;text-decoration:underline}
#home .wide-btn,#lesson .wide-btn{position:static;margin-top:18px;width:100%}

/* ---------------------------------------------------------------- result */
.confetti{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:5}
.result-body{font-size:18px;line-height:1.9;margin:10px 0 16px}
.sheet{background:var(--card);border:2px solid var(--line);border-radius:16px;padding:16px;
  box-shadow:var(--shadow);text-align:start;margin-bottom:18px}
.sheet h3{font-family:var(--hi);margin:0 0 10px;font-size:18px}
.sheet .row{padding:10px 0;border-top:1px solid var(--line)}
.sheet .row:first-of-type{border-top:0}
.rq{font-family:var(--hi);font-size:16px;line-height:1.5}
.ra{font-size:14px;color:var(--dim);margin-top:4px}
.ra .good{color:var(--good)} .ra .bad{color:var(--bad)}
.written-note{font-size:14px;color:var(--dim)}
#result .wide-btn{position:static;width:100%}

/* ------------------------------------------------------------- exam mode
 * No colour, no mascot, no hearts. It should not feel like the rest of the app,
 * because it is not the rest of the app. */
.exam-mode{--accent:#455a64;--accent2:#78909c;--bg:#f2f3f4;--card:#fff;--line:#dfe3e6;
  --bar:#e9ecee;--track:#dfe3e6;--shadow:0 1px 0 #dfe3e6;background:var(--bg)}
.exam-mode #mascot{display:none}
.exam-mode .wide-btn{box-shadow:0 4px 0 #33454d}
.exam-sec{font-size:13px;font-weight:700;color:var(--dim);letter-spacing:.03em;
  text-transform:none;margin-bottom:8px;display:flex;justify-content:space-between}
.exam-sec .marks{color:var(--accent);font-weight:700}
.exam-mode .opt{box-shadow:none}

@media (max-width:400px){
  .grid{grid-template-columns:1fr}
  .grid.pics{grid-template-columns:1fr 1fr}
  .hero{font-size:29px}
}

/* speed control — the number matters more than the icon, so it gets the weight */
.icon.rate{display:inline-flex;align-items:center;gap:2px;font-size:16px}
.icon.rate b{font-size:11px;font-weight:700;color:var(--dim)}

/* the course final — deliberately a different colour from a lesson, and visibly
   shut until it is earned */
.final-card{margin-top:14px;background:linear-gradient(135deg,#fff6e5,#fff);border-color:#f0d08a}
.final-card .lc-title{color:#9a6b12}
.final-card.locked{opacity:.55;background:#f7f2ea;border-color:var(--lock);cursor:not-allowed}