:root{
  /* Deep-slate, grown-up palette */
  --bg:#0b0d14; --bg2:#141824;
  --card:#161b28; --card2:#1d2333;
  --ink:#eef1f8; --muted:#98a2b8;
  --maths:#2dd4bf; --english:#fb8f6b;      /* subject accents (refined) */
  --accent:#7c8cff;                         /* primary interactive (indigo) */
  --gold:#f5c451;                           /* celebratory: stars, streaks, highlight */
  --good:#34d399; --bad:#fb7185;
  --border:rgba(255,255,255,.07);
  --radius:20px; --radius-sm:14px;
  --shadow:0 20px 40px -22px rgba(0,0,0,.75);
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:var(--font); color:var(--ink);
  background:
    radial-gradient(900px 600px at 15% -10%, rgba(124,140,255,.10), transparent 60%),
    radial-gradient(900px 600px at 100% 0%, rgba(45,212,191,.07), transparent 55%),
    var(--bg);
  min-height:100vh; overflow-x:hidden;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
.wrap{max-width:840px;margin:0 auto;padding:26px 20px 90px}
a{color:inherit;text-decoration:none}

/* Top HUD */
.hud{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:4px 0 30px}
.hud .brand{font-size:1.35rem;font-weight:800;letter-spacing:-.02em;margin-right:auto}
.hud .brand small{display:block;font-size:.78rem;color:var(--muted);font-weight:500;letter-spacing:0;margin-top:2px}
.chip{background:var(--card);border:1px solid var(--border);border-radius:999px;padding:8px 15px;font-weight:700;
  display:flex;align-items:center;gap:8px;font-size:1rem}
.chip .big{font-size:1.15rem}

/* Home tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin-top:6px}
.tile{--tint:var(--accent);position:relative;overflow:hidden;cursor:pointer;
  background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--border);
  color:var(--ink);border-radius:var(--radius);padding:26px 24px 28px;text-align:left;
  box-shadow:var(--shadow);font-family:var(--font);
  transition:transform .16s ease,border-color .16s ease}
.tile::before{content:"";position:absolute;top:-40%;right:-20%;width:70%;height:120%;
  background:radial-gradient(circle,var(--tint),transparent 62%);opacity:.14;pointer-events:none}
.tile:hover{transform:translateY(-3px);border-color:rgba(255,255,255,.16)}
.tile:active{transform:translateY(0) scale(.99)}
.tile.maths{--tint:var(--maths)}
.tile.english{--tint:var(--english)}
.tile.logic{--tint:#a78bfa}
.tile.philosophy{--tint:#fbbf24}
.tile.life_skills{--tint:#4ade80}
.tile .emoji{font-size:2rem;width:56px;height:56px;display:flex;align-items:center;justify-content:center;
  border-radius:16px;background:rgba(255,255,255,.05);border:1px solid var(--border)}
.tile h2{margin:16px 0 4px;font-size:1.6rem;font-weight:800;letter-spacing:-.01em}
.tile .meta{font-weight:600;color:var(--muted);font-size:.95rem}
.tile .lvlbar{height:8px;border-radius:999px;background:rgba(255,255,255,.07);margin-top:16px;overflow:hidden}
.tile .lvlbar i{display:block;height:100%;background:var(--tint);border-radius:999px;transition:width .5s}
.tile .play{position:absolute;right:20px;bottom:22px;font-weight:700;font-size:.92rem;color:var(--ink);
  background:rgba(255,255,255,.07);border:1px solid var(--border);padding:7px 15px;border-radius:999px}

.section-title{margin:34px 0 14px;font-size:.82rem;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.12em}
.badges{display:flex;flex-wrap:wrap;gap:10px}
.badge{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:11px 14px;
  display:flex;align-items:center;gap:10px;font-weight:600;font-size:.95rem}
.badge .ico{font-size:1.4rem}
.badge.locked{opacity:.4;filter:grayscale(.8)}
.hint{color:var(--muted);font-weight:500}

/* Play screen */
.topbar{display:flex;align-items:center;gap:12px;margin-bottom:22px}
.back{background:var(--card);border:1px solid var(--border);color:var(--ink);font-family:var(--font);font-weight:600;
  border-radius:999px;padding:9px 16px;cursor:pointer;font-size:.95rem;transition:border-color .15s}
.back:hover{border-color:rgba(255,255,255,.18)}
.progress{flex:1;height:8px;background:var(--card);border:1px solid var(--border);border-radius:999px;overflow:hidden}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),#a9b6ff);transition:width .4s}
.streak{font-weight:800;font-size:1.05rem;min-width:70px;text-align:right;color:var(--muted)}
.streak.on{color:var(--gold);animation:pop .3s}

.card{background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 30px;box-shadow:var(--shadow);margin-bottom:22px;position:relative}
.qtype{color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;margin-bottom:16px}
.stem{font-size:2rem;font-weight:800;line-height:1.3;letter-spacing:-.01em;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.stem .blank{color:var(--accent)}
.speak{background:rgba(124,140,255,.14);color:var(--accent);border:1px solid rgba(124,140,255,.3);border-radius:50%;
  width:50px;height:50px;font-size:1.4rem;cursor:pointer;flex:0 0 auto;transition:transform .1s,background .15s}
.speak:hover{background:rgba(124,140,255,.22)}
.speak:active{transform:scale(.9)}
/* Read-along: the word currently being spoken lights up (no padding = no reflow).
   Works in the question stem AND the teach-card body. */
.word{border-radius:6px;transition:background .1s ease,color .1s ease,box-shadow .1s ease}
.word.speaking{background:var(--gold);color:#3a2a00;box-shadow:0 0 0 5px rgba(245,196,81,.2)}

/* Teach Card (scenario subjects) */
.card.teach{text-align:left}
.teach-title{font-size:1.7rem;font-weight:800;letter-spacing:-.01em;margin:2px 0 12px}
.teach-body{font-size:1.35rem;line-height:1.6;font-weight:500;color:var(--ink);margin:0}
.teach-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.teach-row .btn{flex:1;min-width:150px}
.lesson-btn{font-size:1.15rem;padding:9px 14px}

/* Voice on/off — pinned bottom-centre, out of the way but always reachable. */
.mutebar{position:fixed;left:50%;transform:translateX(-50%);
  bottom:max(16px,env(safe-area-inset-bottom));z-index:60;
  background:var(--card);color:var(--muted);border:1px solid var(--border);border-radius:999px;
  padding:10px 20px;font-family:var(--font);font-weight:600;font-size:.9rem;
  box-shadow:var(--shadow);cursor:pointer;transition:border-color .15s}
.mutebar:hover{border-color:rgba(255,255,255,.18)}
.mutebar:active{transform:translateX(-50%) scale(.95)}
.mutebar.off{background:color-mix(in srgb,var(--bad) 20%,var(--card));border-color:var(--bad);color:#ffdfe5}

.options{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
@media(max-width:560px){.options{grid-template-columns:1fr}}
.opt{font-family:var(--font);cursor:pointer;border:1px solid var(--border);background:var(--card2);color:var(--ink);
  border-radius:var(--radius-sm);padding:24px 18px;font-size:1.5rem;font-weight:700;
  transition:transform .1s,background .15s,border-color .15s}
.opt:hover:not(:disabled){transform:translateY(-2px);border-color:var(--accent);background:#232a3d}
.opt:active:not(:disabled){transform:scale(.98)}
.opt:disabled{cursor:default}
.opt.correct{background:color-mix(in srgb,var(--good) 20%,var(--card2));color:#d9fff0;border-color:var(--good)}
.opt.wrong{background:color-mix(in srgb,var(--bad) 20%,var(--card2));color:#ffe1e8;border-color:var(--bad)}
.opt.correct{animation:pop .35s}
.opt.wrong{animation:shake .4s}

.feedback{min-height:36px;text-align:center;font-size:1.3rem;font-weight:700;margin:6px 0 12px}
.feedback.good{color:var(--good)}
.feedback.bad{color:var(--bad)}

.next{display:block;width:100%;font-family:var(--font);cursor:pointer;border:none;color:#fff;
  background:linear-gradient(120deg,var(--accent),#5a6bff);border-radius:var(--radius-sm);padding:20px;font-size:1.3rem;
  font-weight:700;box-shadow:0 14px 30px -14px rgba(124,140,255,.7);transition:transform .1s,filter .15s}
.next:hover{filter:brightness(1.06)}
.next:active{transform:scale(.99)}
.next[hidden]{display:none}

/* Summary */
.summary{text-align:center}
.summary .big-emoji{font-size:4.4rem}
.summary h2{font-size:2rem;margin:10px 0;font-weight:800;letter-spacing:-.01em}
.summary .score{font-size:1.3rem;font-weight:600;color:var(--muted);margin-bottom:8px}
.summary .xpwin{font-size:1.8rem;font-weight:800;color:var(--gold);margin:12px 0}
.summary .row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.btn{font-family:var(--font);cursor:pointer;border:1px solid transparent;border-radius:var(--radius-sm);padding:16px 26px;font-size:1.15rem;font-weight:700;transition:transform .1s,filter .15s,border-color .15s}
.btn:active{transform:scale(.98)}
.btn.primary{background:linear-gradient(120deg,var(--accent),#5a6bff);color:#fff;box-shadow:0 14px 30px -14px rgba(124,140,255,.7)}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:var(--card);color:var(--ink);border-color:var(--border)}
.btn.ghost:hover{border-color:rgba(255,255,255,.18)}

/* Level-up / badge toast */
.toast{position:fixed;left:50%;top:22%;transform:translate(-50%,-20px);z-index:60;
  background:linear-gradient(120deg,var(--gold),#ffdd8a);color:#3a2a00;border-radius:16px;
  padding:18px 28px;font-size:1.4rem;font-weight:800;box-shadow:0 24px 50px rgba(0,0,0,.5);
  opacity:0;pointer-events:none;text-align:center}
.toast.show{animation:toast 2.2s ease}
@keyframes toast{0%{opacity:0;transform:translate(-50%,-40px) scale(.8)}
  15%{opacity:1;transform:translate(-50%,0) scale(1)}
  80%{opacity:1;transform:translate(-50%,0) scale(1)}
  100%{opacity:0;transform:translate(-50%,-30px) scale(.95)}}

#confetti{position:fixed;inset:0;pointer-events:none;z-index:50}

@keyframes pop{0%{transform:scale(1)}50%{transform:scale(1.12)}100%{transform:scale(1)}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-9px)}40%{transform:translateX(9px)}60%{transform:translateX(-6px)}80%{transform:translateX(6px)}}

/* Parent page */
.parent .panel{background:linear-gradient(180deg,var(--card2),var(--card));border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:16px}
.parent h1{font-size:1.6rem;font-weight:800;letter-spacing:-.01em}
.parent table{width:100%;border-collapse:collapse}
.parent th,.parent td{text-align:left;padding:9px 6px;border-bottom:1px solid var(--border)}
.parent th{color:var(--muted);font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}
.parent input{font-family:var(--font);font-size:1.05rem;padding:13px 16px;border-radius:var(--radius-sm);
  border:1px solid var(--border);background:var(--bg2);color:var(--ink);width:100%;max-width:340px}
.parent input:focus{outline:none;border-color:var(--accent)}
.parent .stat{font-size:1.7rem;font-weight:800}
.parent .lbl{color:var(--muted);font-weight:600;font-size:.9rem}
.profilebar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:6px}
.profile-row{display:inline-flex;align-items:center;gap:6px;background:var(--card2);border:1px solid var(--border);border-radius:999px;padding:7px 14px;font-weight:600}
.btn.tiny{padding:4px 10px;font-size:.9rem;border-radius:999px;line-height:1}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.grid2{grid-template-columns:1fr}}
.center{text-align:center}
.parent .btn{margin:6px 10px 6px 0}

/* Big "Correct!" flash on a right answer */
.correct-flash{position:fixed;inset:0;z-index:70;display:flex;align-items:center;justify-content:center;pointer-events:none}
.correct-flash .msg{background:linear-gradient(120deg,var(--good),#5eead4);color:#053b2b;
  font-size:2.6rem;font-weight:800;padding:24px 42px;border-radius:22px;box-shadow:0 24px 60px rgba(0,0,0,.5);
  display:flex;align-items:center;gap:16px;animation:flashpop 1.4s ease forwards}
.correct-flash .tick{display:inline-flex;align-items:center;justify-content:center;width:54px;height:54px;border-radius:50%;
  background:rgba(255,255,255,.85);color:#0a7a45;font-size:2.1rem}
@keyframes flashpop{
  0%{opacity:0;transform:scale(.4) rotate(-8deg)}
  20%{opacity:1;transform:scale(1.1) rotate(2deg)}
  35%{transform:scale(1) rotate(0)}
  75%{opacity:1;transform:scale(1)}
  100%{opacity:0;transform:scale(1.05)}}