/* Layout: one narrow column under a night sky. Home is a lesson map grouped by level; a lesson is a single focused stage with a bottom feedback bar. */
:root{
  --bg:#05060a;
  --surface:#0b0d14;
  --surface-2:#11141d;
  --line:#1a1e2b;
  --fg:#ebe8e1;
  --muted:#7d8394;
  --accent:#f4b860;
  --accent-ink:#1a1204;
  --accent-soft:rgba(244,184,96,.14);
  --good:#5fd1a1;
  --bad:#ff6b7b;
  --display:'Bricolage Grotesque','Trebuchet MS',system-ui,sans-serif;
  --body:'DM Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'DM Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  --emoji:'Apple Color Emoji','Segoe UI Emoji','Noto Color Emoji',sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{background:var(--bg)}
body{margin:0;color:var(--fg);font-family:var(--body);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
button{font-family:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
#sky{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
.fx{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:50}
.shell{position:relative;z-index:1;max-width:820px;margin:0 auto;padding-block:20px 140px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

.mono,.kicker{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.kicker{margin:0 0 14px}

/* top header on home */
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:28px}
.brand{font:800 22px var(--display);letter-spacing:-.02em;display:flex;align-items:center;gap:10px}
.brand i{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 18px 4px rgba(244,184,96,.55)}
.stats{display:flex;gap:10px}
.pill{display:flex;align-items:center;gap:7px;padding:7px 12px;border:1px solid var(--line);background:var(--surface);border-radius:999px;font:500 14px var(--mono);font-variant-numeric:tabular-nums}
.pill svg{width:16px;height:16px}
.pill .fl{color:var(--accent)}
.snd{cursor:pointer;transition:border-color .2s}
.snd:hover{border-color:#2a3042}
.snd svg{color:var(--accent)}
.snd[aria-pressed=false] svg{color:var(--muted)}

.hero{padding:8px 0 40px;max-width:620px}
.hero h1{font:800 clamp(34px,7vw,56px)/1.04 var(--display);letter-spacing:-.03em;margin:0 0 16px;text-wrap:balance}
.hero h1 em{font-style:normal;color:var(--accent)}
.lede{color:var(--muted);margin:0 0 26px;max-width:46ch}

.cta{background:var(--accent);color:var(--accent-ink);border:0;border-radius:12px;padding:14px 24px;font:600 16px var(--body);cursor:pointer;transition:transform .15s,box-shadow .2s,opacity .2s}
.cta:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 10px 34px -10px rgba(244,184,96,.7)}
.cta:active:not(:disabled){transform:translateY(0)}
.cta:disabled{opacity:.35;cursor:not-allowed}
.ghost{background:transparent;border:1px solid var(--line);border-radius:12px;padding:13px 20px;font:500 15px var(--body);cursor:pointer;transition:border-color .2s,background .2s}
.ghost:hover:not(:disabled){border-color:#2a3042;background:var(--surface)}
.ghost:disabled{opacity:.3;cursor:not-allowed}

/* levels and lesson cards */
.level{border-bottom:1px solid var(--line)}
.level-h{margin:0;font:inherit}
.lvbtn{width:100%;display:flex;align-items:baseline;gap:6px 14px;background:none;border:0;padding:18px 0;cursor:pointer;text-align:left;color:var(--fg)}
.lvbtn:hover .lvname{color:var(--accent)}
.lvname{font:700 22px var(--display);letter-spacing:-.01em;flex:1;min-width:0;transition:color .2s}
.lvcount{font:500 13px var(--mono);color:var(--muted);display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}
.lvcount svg{width:14px;height:14px}
.chev{width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg) translateY(-3px);transition:transform .2s;align-self:center;flex:none}
.lvbtn[aria-expanded=true] .chev{transform:rotate(-135deg) translateY(-1px)}
.lvbody{padding-bottom:26px}
.lvblurb{margin:0 0 14px;color:var(--muted);font-size:14px}
.lvopen{margin:0 0 14px;padding:8px 14px;font-size:13px}
.toast{position:fixed;left:14px;right:14px;bottom:18px;max-width:520px;margin:0 auto;z-index:40;background:var(--surface-2,#11141d);border:1px solid var(--line);border-radius:14px;padding:12px 16px;font-size:14px;line-height:1.45;color:var(--fg);box-shadow:0 12px 36px rgba(0,0,0,.6);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .2s,transform .2s}
.toast.on{opacity:1;transform:none}
.saved{margin:16px 0 0;font-size:13px;color:var(--muted)}
.reset{margin-top:44px;padding:18px;border:1px dashed var(--line);border-radius:14px;display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.reset p{margin:0;color:var(--muted);font-size:14px;line-height:1.5}
.reset-row{display:flex;gap:10px;flex-wrap:wrap}
.reset .ghost{padding:10px 16px;font-size:14px}
.ghost.danger{color:#ff9a9a;border-color:#3a1f24}
.ghost.danger:hover:not(:disabled){border-color:#6a2c33;background:#160b0e}
.cta.danger-cta{background:#ff6b6b;color:#1a0505;padding:10px 16px;font-size:14px}
.foot{margin-top:48px;padding-top:24px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:12px}
.foot nav{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:15px}
.foot a{color:var(--muted);text-decoration:none}
.foot a:hover{color:var(--fg);text-decoration:underline}
.foot a.apoie{color:var(--accent)}
.foot p{margin:0}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.lesson{position:relative;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:10px;cursor:pointer;min-width:0;transition:border-color .2s,transform .2s,background .2s}
.lesson:hover:not(:disabled){border-color:rgba(244,184,96,.5);transform:translateY(-3px);background:var(--surface-2)}
.lesson:disabled{opacity:.42;cursor:not-allowed}
.lesson .em{font:40px/1 var(--emoji)}
.lesson h3{font:700 17px var(--display);margin:0}
.lesson .meta{font:400 12px var(--mono);color:var(--muted)}
.lesson .lk{position:absolute;top:14px;right:14px;width:16px;height:16px;color:var(--muted)}
.starrow{display:flex;gap:3px}
.star{width:16px;height:16px;fill:none;stroke:var(--line);stroke-width:1.6;stroke-linejoin:round}
.star.on{fill:var(--accent);stroke:var(--accent)}

/* lesson screens */
.lbar{display:flex;align-items:center;gap:14px;padding-bottom:24px}
.icon-btn{width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;flex:none;transition:border-color .2s}
.icon-btn:hover{border-color:#2a3042}
.icon-btn svg{width:18px;height:18px}
.track{flex:1;height:8px;border-radius:99px;background:var(--surface-2);overflow:hidden;min-width:0}
.track i{display:block;height:100%;background:var(--accent);border-radius:99px;transition:width .5s cubic-bezier(.2,.8,.2,1);box-shadow:0 0 14px rgba(244,184,96,.6)}

.q,.learn{max-width:560px;margin:0 auto;display:flex;flex-direction:column;gap:18px}
.stage{position:relative;height:210px;display:grid;place-items:center}
.orb{pointer-events:none;position:absolute;width:280px;height:280px;max-width:100%;border-radius:50%;background:radial-gradient(closest-side,rgba(244,184,96,.2),transparent 70%);animation:pulse 5s ease-in-out infinite}
.big-emoji{pointer-events:none;position:relative;font:104px/1 var(--emoji);animation:float 4.5s ease-in-out infinite;filter:drop-shadow(0 18px 24px rgba(0,0,0,.6))}
.card{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 0 4px}
.say{position:relative;z-index:1;display:inline-flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 20px;cursor:pointer;transition:border-color .2s,background .2s}
.say:hover{border-color:rgba(244,184,96,.5);background:var(--surface-2)}
.say .en{font:800 clamp(34px,9vw,48px)/1.1 var(--display);letter-spacing:-.02em}
.say svg{width:24px;height:24px;color:var(--accent);flex:none}
.pt{margin:6px 0 0;color:var(--muted);font-size:18px}
.nav-row{display:flex;gap:12px;justify-content:space-between;padding-top:10px}
.nav-row .cta{flex:1}

.field{width:100%;background:var(--surface);border:1px solid var(--line);color:var(--fg);font:600 28px var(--display);text-align:center;padding:16px 18px;border-radius:12px;transition:border-color .2s,box-shadow .2s}
.field::placeholder{color:#3a4052;font-weight:500}
.field:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.field.ok,.sin.ok{border-color:var(--good);box-shadow:0 0 0 4px rgba(95,209,161,.14)}
.field.bad,.sin.bad{border-color:var(--bad);box-shadow:0 0 0 4px rgba(255,107,123,.14)}
.hintline{min-height:18px;margin:-6px 0 0;text-align:center;color:var(--accent)}
.actions{display:flex;gap:12px}
.actions .cta{flex:1}

.picks{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.pick{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 0;font:64px/1 var(--emoji);cursor:pointer;transition:transform .15s,border-color .2s,background .2s}
.pick:hover:not(:disabled){transform:translateY(-3px);border-color:rgba(244,184,96,.5)}
.pick.ok{border-color:var(--good);background:rgba(95,209,161,.1)}
.pick.bad{border-color:var(--bad);background:rgba(255,107,123,.1)}
.pick:disabled{cursor:default}
.center{display:flex;justify-content:center}

.seq{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 12px;display:flex;flex-direction:column;align-items:center;gap:10px;min-width:0}
.tile .n{font:400 11px var(--mono);color:var(--muted);align-self:flex-start}
.tile .em{font:56px/1 var(--emoji);animation:float 4.5s ease-in-out infinite}
.tile:nth-child(2) .em{animation-delay:-1.1s}
.tile:nth-child(3) .em{animation-delay:-2.2s}
.tile:nth-child(4) .em{animation-delay:-3.3s}
.sin{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--fg);font:600 18px var(--body);text-align:center;padding:10px 6px;border-radius:10px;transition:border-color .2s,box-shadow .2s}
.sin:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}

.emoji-sm{text-align:center;font:44px/1 var(--emoji)}
.sentence{font:700 clamp(24px,5.4vw,34px)/1.5 var(--display);display:flex;flex-wrap:wrap;gap:6px 12px;align-items:baseline;justify-content:center;text-align:center}
.blank{display:inline-block;min-width:92px;min-height:1.3em;border-bottom:3px solid var(--accent);color:var(--accent);text-align:center;padding:0 8px}
.blank.ok{border-color:var(--good);color:var(--good)}
.blank.bad{border-color:var(--bad);color:var(--bad)}
.blank-in{background:transparent;border:0;border-bottom:3px solid var(--accent);color:var(--accent);font:inherit;text-align:center;padding:0 4px;border-radius:0;min-width:3ch}
.blank-in:focus{outline:none;background:var(--accent-soft)}
.blank-in.ok{border-color:var(--good);color:var(--good)}
.blank-in.bad{border-color:var(--bad);color:var(--bad)}
.ptline{text-align:center;color:var(--muted);margin:-4px 0 0}
.opts{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.opt{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 22px;font:600 20px var(--body);cursor:pointer;transition:border-color .2s,background .2s,transform .15s}
.opt:hover:not(:disabled){border-color:rgba(244,184,96,.5);transform:translateY(-2px)}
.opt.sel{border-color:var(--accent);background:var(--accent-soft)}
.opt:disabled{cursor:default}

.ansrow{min-height:68px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:10px 4px;border-bottom:1px solid var(--line)}
.ansrow .ph{color:#3a4052;font-size:15px}
.ansrow.ok{border-color:var(--good)}
.ansrow.bad{border-color:var(--bad)}
.bank{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;min-height:56px}
.chip{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:10px 15px;font:600 18px var(--body);cursor:pointer;transition:transform .15s,opacity .2s,border-color .2s}
.chip.new{animation:pop .25s both}
.chip:hover:not(:disabled){border-color:rgba(244,184,96,.5);transform:translateY(-2px)}
.chip:disabled{cursor:default}
.chip.used{background:transparent;border:1px dashed var(--line);color:transparent;transform:none}

/* feedback bar */
.fb{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface-2);border-top:2px solid var(--good);padding-top:16px;padding-bottom:calc(16px + env(safe-area-inset-bottom,0px));padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));animation:slideup .3s cubic-bezier(.2,.8,.2,1) both}
.fb.bad{border-top-color:var(--bad)}
.fb-in{max-width:560px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.fb-t{display:flex;flex-direction:column;min-width:0;flex:1 1 160px}
.fb-t strong{font:800 20px var(--display);color:var(--good)}
.fb.bad .fb-t strong{color:var(--bad)}
.fb-t span{color:var(--fg);overflow-wrap:anywhere}
.fb .cta{flex:0 0 auto;min-width:140px}
.fb.bad .cta{background:var(--bad);color:#2a0509}

/* result */
.result{max-width:520px;margin:0 auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:18px;padding-top:30px}
.result h2{font:800 clamp(32px,8vw,46px)/1.05 var(--display);letter-spacing:-.03em;margin:0;text-wrap:balance}
.bigstars{display:flex;gap:10px}
.bigstars .star{width:56px;height:56px;stroke-width:1.4}
.bigstars .star.on{filter:drop-shadow(0 0 14px rgba(244,184,96,.7));animation:pop .6s both}
.bigstars .star:nth-child(2){animation-delay:.2s}
.bigstars .star:nth-child(3){animation-delay:.4s}
.tiles{display:flex;gap:12px;width:100%}
.tiles div{flex:1;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 8px}
.tiles b{display:block;font:800 28px var(--display);color:var(--accent);font-variant-numeric:tabular-nums}
.tiles span{font:400 11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.result .actions{width:100%;flex-direction:column}

.nm{font-family:var(--display);font-weight:800;letter-spacing:-.04em;color:var(--accent)}
.big-emoji .tx{display:block;font:800 clamp(30px,10vw,52px)/1.1 var(--display);letter-spacing:-.02em;color:var(--accent);max-width:100%;padding:0 8px;text-align:center;text-wrap:balance;overflow-wrap:anywhere}
.tile .em .tx{display:flex;align-items:center;justify-content:center;min-height:56px;font:700 17px/1.25 var(--display);color:var(--accent);text-align:center;overflow-wrap:anywhere}
.pick.tx{font:600 19px/1.25 var(--body);padding:22px 10px;min-height:76px;overflow-wrap:anywhere}
.rise{animation:rise .55s cubic-bezier(.2,.8,.2,1) both}
.shake{animation:shake .4s}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes pulse{0%,100%{opacity:.7;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}
@keyframes shake{0%,100%{transform:translateX(0)}20%{transform:translateX(-8px)}40%{transform:translateX(7px)}60%{transform:translateX(-5px)}80%{transform:translateX(3px)}}
@keyframes pop{0%{opacity:0;transform:scale(.6)}70%{transform:scale(1.12)}100%{opacity:1;transform:scale(1)}}
@keyframes slideup{from{transform:translateY(100%)}to{transform:none}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}
@media (max-width:420px){
  .big-emoji{font-size:88px}
  .stage{height:180px}
  .top{flex-wrap:wrap}
}

.hero-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.apoiar-btn{display:inline-block;text-decoration:none}
.review{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 20px;margin:0 0 20px}
.review h2{font-size:18px;margin:0 0 2px}
.review p{margin:0;color:var(--muted)}
.review.lock{opacity:.75}
.review h2 svg{width:16px;height:16px;vertical-align:-2px;margin-right:8px}