:root{
  --turquoise:#1f9e95; --turquoise-deep:#0f6f68;
  --saffron:#f0a830; --terracotta:#d96e4a;
  --cream:#fbf4e4; --ink:#2a2320; --leaf:#5c9a6f;
  --shadow:0 10px 30px -12px rgba(15,111,104,.45);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
button{touch-action:manipulation}
html,body{height:100%}
body{
  font-family:"Fraunces",Georgia,serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(240,168,48,.18), transparent 38%),
    radial-gradient(circle at 88% 92%, rgba(217,110,74,.16), transparent 40%),
    var(--cream);
  color:var(--ink); min-height:100%;
  display:flex;justify-content:center;
  padding:env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
}
.fa{font-family:"Vazirmatn",sans-serif;direction:rtl;unicode-bidi:isolate}
.app{width:100%;max-width:480px;display:flex;flex-direction:column;min-height:100vh;position:relative}
.tileband{height:10px;width:100%;
  background:repeating-linear-gradient(135deg,var(--turquoise) 0 14px,var(--saffron) 14px 28px,var(--terracotta) 28px 42px);opacity:.9}

.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 20px 8px}
.brand{display:flex;align-items:center;gap:10px}
.brand .mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(145deg,var(--turquoise),var(--turquoise-deep));
  display:grid;place-items:center;color:#fff;font-family:"Vazirmatn";font-weight:900;font-size:20px;box-shadow:var(--shadow)}
.brand h1{font-size:18px;font-weight:600}
.brand small{display:block;font-size:11px;color:var(--turquoise-deep);font-weight:600;letter-spacing:.5px;text-transform:uppercase}
.stats{display:flex;gap:14px;align-items:center;font-family:"Vazirmatn"}
.stat{display:flex;align-items:center;gap:5px;font-weight:700;font-size:15px}
.stat .ico{font-size:18px}
.stat.streak{color:var(--terracotta)} .stat.xp{color:var(--saffron)}

.screen{flex:1;display:none;flex-direction:column;padding:6px 20px 28px;animation:fade .35s ease}
.screen.active{display:flex}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.hero{margin:14px 0 22px;padding:22px;border-radius:22px;background:linear-gradient(150deg,#ffffff,#fff7e8);box-shadow:var(--shadow);position:relative;overflow:hidden}
.hero:after{content:"۱";position:absolute;left:-6px;bottom:-26px;font-family:"Vazirmatn";font-weight:900;font-size:120px;color:rgba(31,158,149,.07)}
.hero h2{font-size:24px;font-weight:600;margin-bottom:4px}
.hero p{font-size:14px;color:#6b5f55;line-height:1.5}
.unit-label{display:inline-block;font-family:"Vazirmatn";font-weight:700;font-size:12px;color:#fff;background:var(--turquoise);padding:4px 12px;border-radius:20px;margin-bottom:12px}

.path{display:flex;flex-direction:column;align-items:center;gap:0;padding-top:6px}
.node{display:flex;flex-direction:column;align-items:center}
.node .connector{width:4px;height:30px;background:repeating-linear-gradient(var(--turquoise) 0 6px,transparent 6px 12px);opacity:.4}
.lesson-btn{width:84px;height:84px;border:none;border-radius:50%;cursor:pointer;position:relative;
  background:radial-gradient(circle at 35% 30%,#fff,#ffe7b8);box-shadow:0 8px 0 #d99a2e,var(--shadow);
  display:grid;place-items:center;font-size:34px;transition:transform .12s,box-shadow .12s;font-family:"Vazirmatn";font-weight:900;color:var(--turquoise-deep)}
.lesson-btn:active{transform:translateY(4px);box-shadow:0 4px 0 #d99a2e,var(--shadow)}
.lesson-btn.locked{background:#e7ddc9;box-shadow:0 8px 0 #c9bfa7;cursor:not-allowed;filter:grayscale(.5);color:#a99}
.lesson-btn.done{background:radial-gradient(circle at 35% 30%,#bff0d4,#5c9a6f);box-shadow:0 8px 0 #3f7152,var(--shadow);color:#fff}
.lesson-btn .badge{position:absolute;top:-4px;right:-4px;background:var(--leaf);color:#fff;width:26px;height:26px;border-radius:50%;display:none;place-items:center;font-family:"Fraunces";font-size:15px;box-shadow:var(--shadow)}
.lesson-btn.done .badge{display:grid}
.lesson-cap{font-family:"Vazirmatn";font-weight:700;font-size:13px;margin-top:8px;color:#6b5f55}
.lesson-sub{font-size:11px;color:#9b8d7e}
.unit-divider{display:flex;align-items:center;gap:10px;width:100%;margin:22px 0 6px;color:var(--turquoise-deep)}
.unit-divider:before,.unit-divider:after{content:"";flex:1;height:2px;background:rgba(31,158,149,.25)}
.unit-divider span{font-family:"Vazirmatn";font-weight:700;font-size:13px}

.lesson-head{display:flex;align-items:center;gap:14px;padding:14px 0 18px}
.quit{border:none;background:none;font-size:26px;color:#b8aa98;cursor:pointer;line-height:1}
.progress{flex:1;height:14px;background:#ece1cd;border-radius:10px;overflow:hidden}
.progress > i{display:block;height:100%;width:0;border-radius:10px;background:linear-gradient(90deg,var(--leaf),#7cc295);transition:width .4s ease}
.hearts{font-size:18px;letter-spacing:-2px}

.q-wrap{flex:1;display:flex;flex-direction:column}
.q-prompt{font-size:21px;font-weight:600;margin:6px 0 18px;line-height:1.35}
.q-prompt .fa{font-weight:700}

.wordcard{background:#fff;border-radius:24px;box-shadow:var(--shadow);padding:30px 22px;text-align:center;margin-bottom:20px;position:relative;overflow:hidden}
.wordcard:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(31,158,149,.10),transparent 60%);pointer-events:none}
.wordcard .emoji{font-size:72px;line-height:1;position:relative}
.wordcard .glyph{font-family:"Vazirmatn";font-weight:900;font-size:96px;color:var(--turquoise-deep);line-height:1;position:relative}
.wordcard .fa-word{font-family:"Vazirmatn";font-weight:900;font-size:50px;color:var(--turquoise-deep);margin:10px 0 2px;position:relative}
.wordcard .translit{font-size:18px;color:var(--terracotta);font-style:italic;font-weight:600}
.wordcard .meaning{font-size:19px;color:var(--ink);margin-top:2px;font-weight:600}
.wordcard .tag{display:inline-block;font-family:"Vazirmatn";font-weight:700;font-size:13px;background:#eef7f0;color:var(--leaf);padding:4px 12px;border-radius:14px;margin-top:8px}
.speak{margin-top:16px;border:none;cursor:pointer;background:var(--turquoise);color:#fff;font-family:"Vazirmatn";font-weight:700;font-size:15px;padding:10px 22px;border-radius:30px;display:inline-flex;align-items:center;gap:8px;box-shadow:0 5px 0 var(--turquoise-deep);transition:transform .1s,box-shadow .1s}
.speak:active{transform:translateY(3px);box-shadow:0 2px 0 var(--turquoise-deep)}
.speak-row{display:flex;gap:10px;justify-content:center;margin-top:16px}
.speak-row .speak{margin-top:0;font-size:14px;padding:10px 16px}

.options{display:grid;gap:12px}
.options.cols{grid-template-columns:1fr 1fr}
.opt{border:2px solid #e6dcc8;background:#fff;border-radius:18px;padding:18px 16px;cursor:pointer;font-size:19px;text-align:center;transition:all .12s;box-shadow:0 4px 0 #e6dcc8}
.opt:active{transform:translateY(2px);box-shadow:0 2px 0 #e6dcc8}
.opt .fa-word{font-family:"Vazirmatn";font-weight:700;font-size:30px;color:var(--turquoise-deep);display:block}
.opt .glyph{font-family:"Vazirmatn";font-weight:900;font-size:46px;color:var(--turquoise-deep);display:block;line-height:1}
.opt .emoji{font-size:42px;display:block}
.opt.correct{border-color:var(--leaf);background:#e8f6ec;box-shadow:0 4px 0 var(--leaf);color:var(--leaf)}
.opt.wrong{border-color:var(--terracotta);background:#fbe9e3;box-shadow:0 4px 0 var(--terracotta);color:var(--terracotta)}
.opt.dim{opacity:.45}

.match{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.match .col{display:flex;flex-direction:column;gap:10px}
.chip{border:2px solid #e6dcc8;background:#fff;border-radius:16px;padding:16px 8px;cursor:pointer;font-size:18px;text-align:center;box-shadow:0 4px 0 #e6dcc8;transition:all .12s}
.chip .fa-word{font-family:"Vazirmatn";font-weight:700;font-size:24px;color:var(--turquoise-deep)}
.chip .glyph{font-family:"Vazirmatn";font-weight:900;font-size:34px;color:var(--turquoise-deep)}
.chip:active{transform:translateY(2px)}
.chip.sel{border-color:var(--saffron);background:#fff6e3;box-shadow:0 4px 0 var(--saffron)}
.chip.wrong{border-color:var(--terracotta);background:#fbe9e3}
.chip.gone{opacity:0;pointer-events:none;transform:scale(.7);transition:all .3s}

/* ===== Letter tracing ===== */
.trace-wrap{position:relative;width:260px;height:260px;margin:0 auto 14px;border-radius:20px;overflow:hidden;background:#f8f4ed}
.trace-wrap::after{content:'';position:absolute;inset:0;border:3px dashed rgba(31,158,149,.35);border-radius:20px;pointer-events:none}
.trace-guide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-family:"Vazirmatn";font-weight:900;font-size:170px;line-height:1;
  color:rgba(31,158,149,.22);pointer-events:none;user-select:none}
.trace-canvas{position:absolute;top:0;left:0;width:100%;height:100%;touch-action:none;cursor:crosshair;display:block}
.trace-clear{border:none;background:none;color:var(--terracotta);font-family:"Vazirmatn";font-weight:700;
  font-size:13px;cursor:pointer;text-decoration:underline;margin-top:4px}

.footer{padding-top:14px}
.check{width:100%;border:none;cursor:pointer;border-radius:18px;padding:18px;font-family:"Vazirmatn";font-weight:700;font-size:18px;background:var(--leaf);color:#fff;box-shadow:0 6px 0 #3f7152;transition:transform .1s,box-shadow .1s,opacity .2s}
.check:active{transform:translateY(4px);box-shadow:0 2px 0 #3f7152}
.check:disabled{opacity:.4;cursor:not-allowed}
.feedback{display:none;border-radius:18px;padding:16px 18px;margin-bottom:12px;font-weight:600;align-items:center;gap:10px}
.feedback.show{display:flex;animation:fade .25s ease}
.feedback.good{background:#e8f6ec;color:#3f7152} .feedback.bad{background:#fbe9e3;color:var(--terracotta)}
.feedback .fa{font-family:"Vazirmatn";font-weight:700}

.finish{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:8px}
.finish .burst{font-size:90px;animation:pop .5s ease}
@keyframes pop{0%{transform:scale(0) rotate(-20deg)}70%{transform:scale(1.15)}100%{transform:scale(1)}}
.finish h2{font-size:30px;font-weight:700}
.finish .reward{display:flex;gap:24px;margin:18px 0 26px}
.pill{background:#fff;border-radius:18px;padding:14px 22px;box-shadow:var(--shadow);font-family:"Vazirmatn";font-weight:700}
.pill .big{display:block;font-size:26px;color:var(--saffron)} .pill.streak .big{color:var(--terracotta)}
.pill small{color:#9b8d7e;font-weight:500}

.install{display:none;margin:0 0 14px;background:#fff;border:1px dashed var(--turquoise);border-radius:16px;padding:12px 14px;font-size:13px;color:#6b5f55;align-items:center;gap:10px}
.install.show{display:flex}
.install button{margin-inline-start:auto;border:none;background:var(--turquoise);color:#fff;font-family:"Vazirmatn";font-weight:700;padding:8px 14px;border-radius:12px;cursor:pointer;white-space:nowrap}

.voice-hint{display:none;margin:0 0 14px;background:#fff8e1;border:1px solid var(--saffron);border-radius:16px;padding:12px 14px;font-size:13px;color:#6b5f55}